CN113339697B - Combined control method and system for discharging gas from high-pressure tube bundle vehicle to gas discharging column - Google Patents

Abstract

The invention discloses a combined control method and a system for discharging gas from a gas discharging column of a high-pressure tube bundle vehicle, wherein the method comprises the following steps: the first controller of the high-pressure tube bundle vehicle is in communication connection with the second controller of the gas discharging column, and after the gas discharging pipe of the high-pressure tube bundle vehicle is connected with the hydrogen inlet pipe of the gas discharging column, the first controller and the second controller are triggered to generate a gas discharging preparation signal; after the second controller generates a gas unloading preparation signal, a purging system of the gas unloading column is controlled to purge the pipeline in the gas unloading column, and after purging is completed, the second controller generates a gas unloading signal and sends the gas unloading signal to the first controller; the first controller and the second controller control the high-pressure tube bundle vehicle and the gas discharging column to perform hydrogen discharging operation. The method and the system can realize the automatic hydrogen discharge operation, improve the safety and save the labor.

Description

Combined control method and system for discharging gas from high-pressure tube bundle vehicle to gas discharging column

Technical Field

The invention relates to the technical field of hydrogen discharge control, in particular to a combined control method and a system for discharging gas from a high-pressure tube bundle vehicle to a gas discharge column.

Background

With the application and popularization of hydrogen energy fuel cells, more and more automobiles adopt the hydrogen energy fuel cells, and a hydrogen station becomes an important infrastructure for popularizing the hydrogen energy fuel.

At present, a hydrogen tube bundle vehicle is basically adopted as a hydrogen transportation tool in a hydrogen station, the hydrogen tube bundle vehicle transports hydrogen from a hydrogen production plant to the hydrogen station, and a gas discharge column is utilized to convey the hydrogen in the hydrogen tube bundle vehicle to a storage tube bundle of the hydrogen station. Generally, the tube bundle air pressure of the hydrogen tube bundle vehicle is about 20MPa, the joint of a hose of the hydrogen tube bundle vehicle and a hydrogen unloading column is difficult to bear high pressure, the gas pressure output by the hydrogen tube bundle vehicle needs to be properly reduced and then is introduced into the gas unloading column, and the gas with lower pressure is pressurized by the gas unloading column and then is input into the storage tube bundle.

The existing hydrogen unloading operation needs more manual operations, such as pipeline connection, abnormal problem processing, hydrogen unloading start-stop operation and the like, and after abnormality occurs, a hydrogen tube bundle vehicle and a hydrogen unloading column are difficult to synchronously operate, so that certain potential safety hazards exist.

Disclosure of Invention

The invention aims to provide a combined control method for gas discharging of a high-pressure tube bundle vehicle to a gas discharging column.

The invention aims to provide a combined control system for discharging gas from a high-pressure tube bundle vehicle to a gas discharging column, which realizes the combined control of the high-pressure tube bundle vehicle and the gas discharging column in the hydrogen discharging process, realizes automatic hydrogen discharging and improves the hydrogen discharging safety.

In order to achieve the purpose, the invention adopts the following technical scheme:

a combined control method for discharging gas from a high-pressure tube bundle vehicle to a gas discharging column comprises the following steps:

the first controller of the high-pressure tube bundle vehicle is in communication connection with the second controller of the gas discharging column;

when an air discharge pipe of the high-pressure pipe bundle vehicle is connected with a hydrogen inlet pipe of the air discharge column, the first controller and the second controller are triggered to generate a hydrogen quality detection signal;

the first controller controls the hydrogen in the high-pressure tube bundle to enter the hydrogen inlet pipe through the gas discharge pipe according to the hydrogen quality detection signal; the second controller controls hydrogen introduced from the hydrogen inlet pipe to be sent into the optical cavity ring-down instrument for detection according to the hydrogen quality detection signal, a detection result is generated, when the second controller judges that the detection result is that the hydrogen quality is qualified, a gas unloading preparation signal is generated and sent to the first controller, and if the second controller judges that the detection result is that the hydrogen quality is unqualified, an alarm is sent out;

after the second controller generates a gas unloading preparation signal, a purging system of the gas unloading column is controlled to purge the pipeline in the gas unloading column, and after purging is completed, the second controller generates a gas unloading signal and sends the gas unloading signal to the first controller;

the first controller controls hydrogen in the high-pressure tube bundle to enter a hydrogen inlet pipe through the gas discharge pipe according to a gas discharge signal, the second controller starts a compressor in the gas discharge column and opens a hydrogen inlet valve of the hydrogen inlet pipe according to the gas discharge signal, and the hydrogen introduced from the hydrogen inlet pipe is compressed and then is input into the storage tank;

the first controller monitors the air pressure in the high-pressure tube bundle and the air pressure in the air discharge pipe in real time, and when the air pressure in the high-pressure tube bundle is equal to the air pressure in the air discharge pipe, an air discharge completion signal is generated and sent to the second controller; and the second controller controls the compressor to stop and controls the hydrogen inlet valve to be closed according to the gas unloading completion signal.

Further, the first controller is pre-stored with an air pressure safety threshold and an air pressure adjustable threshold;

when any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube exceeds an air pressure safety threshold and is positioned at an air pressure adjustable threshold, the first controller sends an air pressure abnormal signal to the second controller;

and the second controller controls the hydrogen inlet pipe to be communicated with an emptying pipeline to release overpressure according to the air pressure abnormal signal.

Further, when any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge pipe exceeds an air pressure adjustable threshold, the first controller controls the high-pressure tube bundle to stop discharging air, generates a gas discharge stopping signal and sends the gas discharge stopping signal to the second controller;

the second controller controls the compressor to stop and controls an emergency stop valve on the hydrogen inlet pipe to close according to the gas discharge stopping signal, and then controls the hydrogen inlet valve to close.

Further, the purging system comprises a nitrogen purging system and a hydrogen purging system, and the second controller controls the hydrogen purging system to perform pipeline purging after the nitrogen purging system completes pipeline purging;

after the nitrogen purging system completes purging of the pipeline, the second controller sends a hydrogen purging instruction to the first controller, the first controller controls the high-pressure tube bundle to introduce hydrogen into the hydrogen inlet pipe, and the hydrogen purging system purges the pipeline by using the hydrogen introduced into the hydrogen inlet pipe;

and when the hydrogen purging is finished, the second controller generates a purging finishing signal and sends the purging finishing signal to the first controller, and the first controller controls the high-pressure tube bundle to stop outputting the hydrogen according to the purging finishing signal.

Further, hydrogen concentration sensors are arranged in the shell of the gas discharging column and the high-pressure tube bundle vehicle body;

in the gas unloading process, the hydrogen concentration sensor detects the hydrogen concentration in real time and sends the hydrogen concentration to the first controller or the second controller, and the first controller and the second controller are both pre-stored with a hydrogen concentration safety threshold;

when the first controller judges that the received hydrogen concentration is greater than a hydrogen concentration safety threshold value, a hydrogen leakage signal is generated, the first controller controls the high-pressure tube bundle to stop hydrogen output, and the first hydrogen leakage signal is sent to the second controller; the second controller controls the compressor to stop and controls an emergency stop valve on the hydrogen inlet pipe to close according to the first hydrogen leakage signal, and then controls the hydrogen inlet valve to close;

when the second controller judges that the received hydrogen concentration is greater than the hydrogen concentration safety threshold value, generating a second hydrogen leakage signal and sending the second hydrogen leakage signal to the first controller, wherein the first controller controls the high-pressure tube bundle to stop hydrogen output according to the second hydrogen leakage signal and sends the generated gas discharge stopping signal to the second controller;

the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet pipe to close according to the gas discharge stopping signal, and then controls the hydrogen inlet valve to close.

A combined control system for discharging gas from a high-pressure tube bundle vehicle to a gas discharging column comprises a first controller, a high-pressure tube bundle, a gas discharging pipe, a gas discharging valve, a second controller, a hydrogen inlet pipe, a hydrogen inlet valve, a purging system and a compressor, wherein the first controller and the second controller are in communication connection;

the gas discharging pipe and the hydrogen inlet pipe are respectively provided with matched trigger modules which are matched and used for triggering the first controller and the second controller to generate gas discharging preparing signals;

the second controller is used for controlling a purging system of the gas discharging column to purge the pipeline in the gas discharging column after generating a gas discharging preparation signal, and the second controller generates a gas discharging signal and sends the gas discharging signal to the first controller after purging is completed;

the first controller controls hydrogen in the high-pressure tube bundle to enter a hydrogen inlet pipe through the gas discharge pipe according to a gas discharge signal, the second controller starts a compressor in the gas discharge column and opens a hydrogen inlet valve of the hydrogen inlet pipe according to the gas discharge signal, and the hydrogen introduced from the hydrogen inlet pipe is compressed and then is input into the storage tank;

the first controller is provided with an air pressure monitoring module which is used for monitoring the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube in real time; the first controller is also used for generating a gas unloading completion signal when the air pressure in the high-pressure tube bundle is equal to the air pressure in the gas unloading pipe, and sending the gas unloading completion signal to the second controller;

the second controller is provided with an air unloading stopping module, and the air unloading stopping module is used for controlling the compressor to stop and controlling the hydrogen inlet valve to be closed according to the air unloading finishing signal.

Further, the first controller is also provided with a storage module for storing the air pressure safety threshold value and the air pressure adjustable threshold value;

the first controller is further provided with a comparison module, the comparison module is used for comparing the air pressure in the high-pressure tube bundle or the air pressure in the air discharge tube obtained by the air pressure monitoring module with an air pressure safety threshold and an air pressure adjustable threshold, and when any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube exceeds the air pressure safety threshold and is located at the air pressure adjustable threshold, the first controller sends an air pressure abnormal signal to the second controller;

the second controller is provided with a pressure relief module, and the pressure relief module is used for controlling the hydrogen inlet pipe to be communicated with the emptying pipeline to relieve overpressure pressure according to the air pressure abnormal signal.

Further, when the comparison module obtains that any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge pipe exceeds an air pressure adjustable threshold, the first controller controls the high-pressure tube bundle to stop discharging air, generates an air discharge stopping signal and sends the air discharge stopping signal to the second controller;

the gas unloading stopping module controls the compressor to stop and controls an emergency stop valve on the hydrogen inlet pipe to close according to the gas unloading stopping signal, and then controls the hydrogen inlet valve to close.

Furthermore, the purging system comprises a nitrogen purging system and a hydrogen purging system, the second controller is further provided with a purging control module, and the purging control module is used for controlling the nitrogen purging system to perform pipeline purging after the nitrogen purging system completes pipeline purging;

after the nitrogen purging system completes purging of the pipeline, the purging control module generates a hydrogen purging instruction, the second controller sends the hydrogen purging instruction to the first controller, the first controller controls the high-pressure tube bundle to introduce hydrogen into the hydrogen inlet tube, and the hydrogen purging system purges the pipeline by using the hydrogen introduced from the hydrogen inlet tube;

and when the hydrogen purging is finished, the purging control module of the second controller generates a purging finishing signal and sends the purging finishing signal to the first controller, and the first controller controls the high-pressure tube bundle to stop outputting the hydrogen according to the purging finishing signal.

Further, the combined control system for discharging gas from the high-pressure tube bundle vehicle to the gas discharging column further comprises a hydrogen concentration sensor, wherein the hydrogen concentration sensor is used for detecting the hydrogen concentration in the shell of the gas discharging column and the hydrogen concentration in the high-pressure tube bundle vehicle in real time and sending the hydrogen concentration to the first controller or the second controller;

the first controller and the second controller are both provided with hydrogen concentration judgment modules, hydrogen safety concentration threshold values are prestored in the hydrogen concentration judgment modules, the hydrogen concentration judgment modules are used for judging whether the hydrogen concentration detected by the hydrogen concentration sensor is greater than the hydrogen safety concentration threshold value or not, and if the hydrogen concentration is greater than the hydrogen safety concentration threshold value, hydrogen leakage signals are generated;

the first controller controls the high-pressure tube bundle to stop outputting hydrogen according to a hydrogen leakage signal, and the gas unloading stopping module of the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet tube to close according to the first hydrogen leakage signal, and then controls the hydrogen inlet valve to close.

The embodiment of the invention has the beneficial effects that:

in the method of the embodiment of the invention, when the hydrogen unloading operation is carried out, firstly, the first controller and the second controller are ensured to establish communication connection, the gas unloading pipe of the high-pressure pipe bundle vehicle is connected with the hydrogen inlet pipe of the gas unloading column to trigger the hydrogen unloading preparation action, the connection of the gas unloading pipe and the hydrogen inlet pipe needs manual operation, and the subsequent hydrogen unloading preparation, the hydrogen unloading action and the hydrogen unloading finishing action are automatically completed under the control of the first controller and the second controller, so that the labor is saved.

The combined control system of the embodiment of the invention connects the controller of the high-pressure tube bundle vehicle with the controller of the gas discharging column in a communication manner, realizes combined control in the gas discharging process, and can save manpower and improve the gas discharging safety.

Drawings

FIG. 1 is an interactive diagram of a first controller and a second controller of a combined control method for unloading gas from a high pressure tube bundle vehicle to a gas unloading column according to one embodiment of the invention;

FIG. 2 is an interaction diagram of a first controller and a second controller when air pressure exceeds an air pressure safety threshold and is at an air pressure adjustable threshold;

FIG. 3 is an interaction diagram of a first controller and a second controller when air pressure exceeds an air pressure adjustable threshold;

fig. 4 is a schematic structural diagram of a combined control system for discharging gas from a high-pressure tube bundle vehicle to a gas discharge column according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, whether explicit or implicit, for distinguishing between the described features, whether sequential or explicit.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following describes a combined control method and system for discharging gas from a high-pressure tube bundle vehicle to a gas discharging column according to an embodiment of the invention with reference to fig. 1.

Referring to fig. 1, a combined control method for discharging gas from a high-pressure tube bundle vehicle to a gas discharging column according to an embodiment of the present invention includes the following steps:

the method comprises the following steps that a first controller of the high-pressure tube bundle vehicle is in communication connection with a second controller of the gas discharging column, and after a gas discharging pipe of the high-pressure tube bundle vehicle is connected with a hydrogen inlet pipe of the gas discharging column, the first controller and the second controller are triggered to generate a hydrogen quality detection signal;

the first controller controls the hydrogen in the high-pressure tube bundle to enter the hydrogen inlet pipe through the gas discharge pipe according to the hydrogen quality detection signal; the second controller controls hydrogen introduced from the hydrogen inlet pipe to be sent into the optical cavity ring-down instrument for detection according to the hydrogen quality detection signal, a detection result is generated, when the second controller judges that the detection result is that the hydrogen quality is qualified, a gas unloading preparation signal is generated and sent to the first controller, and if the second controller judges that the detection result is that the hydrogen quality is unqualified, an alarm is sent out;

after the second controller generates a gas unloading preparation signal, the purging system of the gas unloading column is controlled to purge the pipeline in the gas unloading column, and after purging is completed, the second controller generates a gas unloading signal and sends the gas unloading signal to the first controller;

the first controller controls hydrogen in the high-pressure tube bundle to enter a hydrogen inlet pipe through the gas discharge pipe according to the gas discharge signal, and the second controller starts a compressor in the gas discharge column and opens a hydrogen inlet valve of the hydrogen inlet pipe according to the gas discharge signal, compresses the hydrogen introduced from the hydrogen inlet pipe and inputs the compressed hydrogen into a storage tank;

the first controller monitors the air pressure in the high-pressure tube bundle and the air pressure in the air discharging pipe in real time, when the air pressure in the high-pressure tube bundle is equal to the air pressure in the air discharging pipe, an air discharging finishing signal is generated, and the air discharging finishing signal is sent to the second controller; the second controller controls the compressor to stop and controls the hydrogen inlet valve to be closed according to the gas unloading completion signal.

In the method of the embodiment of the invention, when the hydrogen discharging operation is carried out, the first controller and the second controller are firstly ensured to establish communication connection, the hydrogen discharging preparation action is triggered by connecting the gas discharging pipe of the high-pressure pipe bundle vehicle with the hydrogen inlet pipe of the gas discharging column, the connection of the gas discharging pipe and the hydrogen inlet pipe needs manual operation, and the subsequent hydrogen discharging preparation, hydrogen discharging action and hydrogen discharging finishing action are automatically completed under the control of the first controller and the second controller, so that the labor is saved.

Specifically, after the gas discharge of the high-pressure tube bundle is completed, residual hydrogen in the high-pressure tube bundle is discharged through the vent pipe, and the residual hydrogen discharge action is completed by controlling the ventilator by the first controller. The purging system is also connected with a vent pipe, and waste gas generated by purging is discharged from the vent pipe.

The first controller and the second controller are in communication connection in a wired or wireless mode, and the first controller and the second controller can communicate only by password matching.

Preferably, in some embodiments, the method of the present invention further comprises a remote control end, and the first controller and the second controller are both connected in communication with the remote control end. The remote control end can issue a hydrogen discharge instruction or a hydrogen discharge stopping instruction to the first controller and the second controller, and the first controller and the second controller control each part to perform hydrogen discharge operation or stop hydrogen discharge operation according to the received instruction. The first controller and the second controller synchronously upload the states and actions of all the components to the remote control end.

In order to ensure the continuity of air discharge, further, an air pressure safety threshold value and an air pressure adjustable threshold value are prestored in the first controller;

when any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube exceeds the air pressure safety threshold and is positioned at the air pressure adjustable threshold, the first controller sends an air pressure abnormal signal to the second controller;

the second controller controls the hydrogen inlet pipe to be communicated with the emptying pipeline to release overpressure according to the air pressure abnormal signal.

The threshold value can be adjusted by designing the air pressure, a certain pressure fluctuation range in the process of the gas discharging operation is allowed, the hydrogen discharging operation is favorably carried out smoothly, and the hydrogen discharging speed is improved. It should be noted that, when the situation of the over-high air pressure in the high-pressure tube bundle is less, the phenomenon of the over-high air pressure in the high-pressure tube bundle may occur at the initial stage of air discharge due to the high external environment temperature, at this time, the air discharge speed may be increased by adjusting the air discharge of the air discharge valve between the high-pressure tube bundle and the air discharge pipe, the pressure may be reduced by further providing a temperature adjusting device outside the high-pressure tube bundle, and reducing the temperature in the high-pressure tube bundle by the temperature adjusting device, in some embodiments, the pressure in the high-pressure tube bundle is reduced by increasing the air discharge speed and reducing the temperature in the high-pressure tube bundle.

In order to ensure the safety of gas discharge, when any one of the gas pressure in the high-pressure tube bundle and the gas pressure in the gas discharge pipe exceeds the gas pressure adjustable threshold, the first controller controls the high-pressure tube bundle to stop gas discharge, generates a gas discharge stopping signal and sends the gas discharge stopping signal to the second controller; the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet pipe to close according to the gas discharge stopping signal, and then controls the hydrogen inlet valve to close. When the air pressure exceeds the adjustable air pressure threshold, the air pressure is difficult to adjust to the air pressure safety threshold in a short time, and the air discharge environment or equipment has faults, the air discharge needs to be stopped emergently to check the faults, so that the sufficient safety is ensured. When the air discharge is stopped, the first controller or the second controller gives an alarm to prompt an operator.

Optionally, in some embodiments, a barometer is installed in the hydrogen inlet pipe, during the gas discharging process, the barometer sends a gas pressure signal to the second control device in real time, when the first controller determines that the gas pressure exceeds the gas pressure safety threshold and is located at the gas pressure adjustable threshold and determines that the gas pressure exceeds the gas pressure adjustable threshold, the second controller determines whether the pressure in the hydrogen inlet pipe exceeds a preset range, if the pressure exceeds the preset range, the pressure relief operation or the gas discharging operation is stopped, if the pressure does not exceed the preset range, the second controller sends a gas discharging continuing signal to the first controller, and the gas discharging operation continues. Therefore, misjudgment of the first controller can be avoided.

Specifically, the purging system comprises a nitrogen purging system and a hydrogen purging system, and the second controller controls the nitrogen purging system to perform pipeline purging after the pipeline purging is completed by the nitrogen purging system;

after the nitrogen purging system completes purging of the pipeline, the second controller sends a hydrogen purging instruction to the first controller, the first controller controls the high-pressure tube bundle to introduce hydrogen into the hydrogen inlet pipe, and the hydrogen purging system purges the pipeline by using the hydrogen introduced from the hydrogen inlet pipe; when the hydrogen purging is finished, the second controller generates a purging finishing signal and sends the purging finishing signal to the first controller, and the first controller controls the high-pressure tube bundle to stop hydrogen output according to the purging finishing signal.

According to the method provided by the embodiment of the invention, hydrogen in the high-pressure tube bundle is adopted for purging, a hydrogen storage device for purging is not required to be additionally arranged in the hydrogenation station, the consistency of hydrogen introduced into the storage tank by the gas discharging column can be ensured, and the quality of hydrogen can be stabilized.

In order to further monitor the safety of gas discharge, hydrogen concentration sensors are arranged in the shell of the gas discharge column and the high-pressure tube bundle vehicle body;

in the gas unloading process, a hydrogen concentration sensor detects the hydrogen concentration in real time and sends the hydrogen concentration to a first controller or a second controller, and the first controller and the second controller are both pre-stored with a hydrogen concentration safety threshold;

when the first controller judges that the received hydrogen concentration is greater than the hydrogen concentration safety threshold value, a hydrogen leakage signal is generated, the first controller controls the high-pressure tube bundle to stop hydrogen output, and the first hydrogen leakage signal is sent to the second controller; the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet pipe to close according to the first hydrogen leakage signal, and then controls the hydrogen inlet valve to close;

when the second controller judges that the received hydrogen concentration is greater than the hydrogen concentration safety threshold value, generating a second hydrogen leakage signal and sending the second hydrogen leakage signal to the first controller, and the first controller controls the high-pressure tube bundle to stop hydrogen output according to the second hydrogen leakage signal and sends the generated gas discharge stopping signal to the second controller;

the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet pipe to close according to the gas discharge stopping signal, and then controls the hydrogen inlet valve to close.

When the hydrogen concentration is abnormal, the high-pressure tube bundle vehicle and the gas discharging column are jointly controlled through the first controller and the second controller, so that the abnormal signal of the hydrogen concentration can be quickly responded, and the gas discharging safety is further improved. When the hydrogen concentration is too high and the gas discharge is required to be stopped, the high-pressure tube bundle stops the hydrogen output firstly, then the compressor of the gas discharge column is stopped, the emergency stop valve is closed, and then the hydrogen valve is closed. The high-pressure tube bundle is ensured to stop hydrogen output before, the gas discharging column acts after, and the time interval of the action of the two is 0.5-1s.

Correspondingly, the embodiment of the invention also provides a combined control system for discharging gas from the high-pressure tube bundle vehicle to the gas discharging column, which comprises a first controller, the high-pressure tube bundle, a gas discharging pipe, a gas discharging valve, a second controller, a hydrogen inlet pipe, a hydrogen inlet valve, a purging system and a compressor, wherein the first controller is in communication connection with the second controller, the gas discharging pipe is communicated with the high-pressure tube bundle, the hydrogen inlet valve is arranged on the hydrogen inlet pipe, and the hydrogen inlet pipe is communicated with the compressor;

the gas discharging pipe and the hydrogen inlet pipe are respectively provided with matched trigger modules which are matched with each other and used for triggering the first controller and the second controller to generate gas discharging preparing signals;

the second controller is used for controlling the purging system of the gas discharging column to purge the pipeline in the gas discharging column after generating a gas discharging preparation signal, and the second controller generates a gas discharging signal and sends the gas discharging signal to the first controller after purging is finished;

the first controller controls hydrogen in the high-pressure tube bundle to enter a hydrogen inlet pipe through the gas discharge pipe according to the gas discharge signal, and the second controller starts a compressor in the gas discharge column and opens a hydrogen inlet valve of the hydrogen inlet pipe according to the gas discharge signal, compresses the hydrogen introduced from the hydrogen inlet pipe and inputs the compressed hydrogen into a storage tank;

the first controller is provided with an air pressure monitoring module which is used for monitoring the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube in real time; the first controller is also used for generating a gas unloading completion signal when the air pressure in the high-pressure tube bundle is equal to the air pressure in the gas unloading pipe, and sending the gas unloading completion signal to the second controller;

the second controller is provided with an air unloading stopping module which is used for controlling the compressor to stop and controlling the hydrogen inlet valve to close according to the air unloading finishing signal.

The combined control system of the embodiment of the invention connects the controller of the high-pressure tube bundle vehicle with the controller of the gas discharging column in a communication manner, realizes combined control in the gas discharging process, and can save manpower and improve the gas discharging safety.

Specifically, the air discharge valve is arranged on a pipeline between the high-pressure tube bundle and the air discharge tube, and the air discharge valve is used for controlling the air discharge speed and enabling the air pressure in the air discharge tube to be lower than the air pressure in the high-pressure tube bundle. The purging system is communicated with the hydrogen inlet pipe, and the connecting point is positioned between the air inlet valve and the compressor. The hydrogen inlet valve is arranged at the port of the hydrogen inlet pipe close to control the introduction of hydrogen. All install pressure sensor in high-pressure tube bank and the gas discharge pipe, pressure sensor is used for sending pressure signal to first controller.

Further, the first controller is also provided with a storage module for storing the air pressure safety threshold value and the air pressure adjustable threshold value;

the first controller is also provided with a comparison module, the comparison module is used for comparing the air pressure in the high-pressure tube bundle or the air pressure in the air discharge tube obtained by the air pressure monitoring module with an air pressure safety threshold and an air pressure adjustable threshold, and when any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube exceeds the air pressure safety threshold and is positioned at the air pressure adjustable threshold, the first controller sends an air pressure abnormal signal to the second controller;

the second controller is provided with a pressure relief module, and the pressure relief module is used for controlling the hydrogen inlet pipe to be communicated with the emptying pipeline to relieve overpressure according to the air pressure abnormal signal.

The pipeline between the hydrogen inlet pipe and the emptying pipeline is provided with a pressure release valve, the pressure release valve is electrically connected with the second controller, the pressure release module is used for controlling the on-off of the pressure release valve, and the pressure release valve is installed between the purging system and the hydrogen inlet pipe connecting point and the compressor.

Further, when the comparison module obtains that any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge pipe exceeds the air pressure adjustable threshold, the first controller controls the high-pressure tube bundle to stop discharging air, generates an air discharge stopping signal and sends the air discharge stopping signal to the second controller;

the gas unloading stopping module controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet pipe to close according to the gas unloading stopping signal, and then controls the hydrogen inlet valve to close.

Furthermore, the purging system comprises a nitrogen purging system and a hydrogen purging system, the second controller is further provided with a purging control module, and the purging control module is used for controlling the nitrogen purging system to perform pipeline purging after the pipeline purging is completed by the nitrogen purging system;

after the nitrogen purging system completes purging of the pipeline, the purging control module generates a hydrogen purging instruction, the second controller sends the hydrogen purging instruction to the first controller, the first controller controls the high-pressure tube bundle to introduce hydrogen into the hydrogen inlet pipe, and the hydrogen purging system purges the pipeline by using the hydrogen introduced into the hydrogen inlet pipe;

when the hydrogen purging is finished, the purging control module of the second controller generates a purging finishing signal and sends the purging finishing signal to the first controller, and the first controller controls the high-pressure tube bundle to stop outputting the hydrogen according to the purging finishing signal.

Further, the combined control system for discharging gas from the high-pressure tube bundle vehicle to the gas discharging column further comprises a hydrogen concentration sensor, wherein the hydrogen concentration sensor is used for detecting the hydrogen concentration in the shell of the gas discharging column and the hydrogen concentration in the high-pressure tube bundle vehicle in real time and sending the hydrogen concentration to the first controller or the second controller;

the first controller and the second controller are both provided with hydrogen concentration judgment modules, hydrogen safety concentration threshold values are prestored in the hydrogen concentration judgment modules, the hydrogen concentration judgment modules are used for judging whether the hydrogen concentration detected by the hydrogen concentration sensor is greater than the hydrogen safety concentration threshold value or not, and if the hydrogen concentration is greater than the hydrogen safety concentration threshold value, hydrogen leakage signals are generated;

the first controller controls the high-pressure tube bundle to stop outputting hydrogen according to the hydrogen leakage signal, the gas unloading stopping module of the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet tube to close according to the first hydrogen leakage signal, and then the hydrogen inlet valve is controlled to close.

Other configurations and operations of a method and system for combined control of the discharge of a high pressure tube bundle vehicle to a discharge column according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A combined control method for unloading gas from a high-pressure tube bundle vehicle to an air unloading column is characterized by comprising the following steps:

the first controller of the high-pressure tube bundle vehicle is in communication connection with the second controller of the gas discharging column;

when an air discharging pipe of the high-pressure pipe bundle vehicle is connected with a hydrogen inlet pipe of the air discharging column, the first controller and the second controller are triggered to generate a hydrogen quality detection signal;

the first controller controls the hydrogen in the high-pressure tube bundle to enter the hydrogen inlet pipe through the gas discharge pipe according to the hydrogen quality detection signal; the second controller controls hydrogen introduced from the hydrogen inlet pipe to be sent into the optical cavity ring-down instrument for detection according to the hydrogen quality detection signal, a detection result is generated, when the second controller judges that the detection result is that the hydrogen quality is qualified, a gas unloading preparation signal is generated and sent to the first controller, and if the second controller judges that the detection result is that the hydrogen quality is unqualified, an alarm is sent out;

after the second controller generates a gas unloading preparation signal, a purging system of the gas unloading column is controlled to purge the pipeline in the gas unloading column, and after purging is completed, the second controller generates a gas unloading signal and sends the gas unloading signal to the first controller;

the first controller controls hydrogen in the high-pressure tube bundle to enter a hydrogen inlet pipe through the gas discharge pipe according to a gas discharge signal, the second controller starts a compressor in the gas discharge column and opens a hydrogen inlet valve of the hydrogen inlet pipe according to the gas discharge signal, and the hydrogen introduced from the hydrogen inlet pipe is compressed and then is input into the storage tank;

the first controller monitors the air pressure in the high-pressure tube bundle and the air pressure in the air discharge pipe in real time, generates an air discharge completion signal when the air pressure in the high-pressure tube bundle is equal to the air pressure in the air discharge pipe, and sends the air discharge completion signal to the second controller; the second controller controls the compressor to stop and controls the hydrogen inlet valve to be closed according to the gas unloading completion signal;

the first controller is pre-stored with an air pressure safety threshold and an air pressure adjustable threshold;

when any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube exceeds an air pressure safety threshold and is positioned at an air pressure adjustable threshold, the first controller sends an air pressure abnormal signal to the second controller;

and the second controller controls the hydrogen inlet pipe to be communicated with an emptying pipeline to release overpressure according to the air pressure abnormal signal.

2. The combined control method for the unloading of the high-pressure tube bundle vehicle to the unloading column of claim 1, wherein when any one of the air pressure in the high-pressure tube bundle and the air pressure in the unloading tube exceeds an air pressure adjustable threshold, the first controller controls the high-pressure tube bundle to stop unloading and generates an unloading stop signal to be sent to the second controller;

the second controller controls the compressor to stop and controls an emergency stop valve on the hydrogen inlet pipe to close according to the gas discharge stopping signal, and then controls the hydrogen inlet valve to close.

3. The combined control method for discharging gas from a gas discharging column of a high-pressure tube bundle vehicle as claimed in claim 1, wherein the purging system comprises a nitrogen purging system and a hydrogen purging system, and the second controller controls the hydrogen purging system to perform pipeline purging after the nitrogen purging system completes pipeline purging;

after the nitrogen purging system completes purging of the pipeline, the second controller sends a hydrogen purging instruction to the first controller, the first controller controls the high-pressure tube bundle to introduce hydrogen into the hydrogen inlet pipe, and the hydrogen purging system purges the pipeline by using the hydrogen introduced into the hydrogen inlet pipe;

and when the hydrogen purging is finished, the second controller generates a purging finishing signal and sends the purging finishing signal to the first controller, and the first controller controls the high-pressure tube bundle to stop outputting the hydrogen according to the purging finishing signal.

4. The combined control method for discharging gas from a gas discharge column by a high-pressure tube bundle vehicle according to claim 1, wherein a hydrogen concentration sensor is arranged in a shell of the gas discharge column and in the high-pressure tube bundle vehicle;

in the gas unloading process, the hydrogen concentration sensor detects the hydrogen concentration in real time and sends the hydrogen concentration to the first controller or the second controller, and the first controller and the second controller both have a hydrogen concentration safety threshold in advance;

when the first controller judges that the received hydrogen concentration is greater than a hydrogen concentration safety threshold value, generating a first hydrogen leakage signal, controlling the high-pressure tube bundle to stop hydrogen output by the first controller, and sending the first hydrogen leakage signal to the second controller; the second controller controls the compressor to stop and controls an emergency stop valve on the hydrogen inlet pipe to close according to the first hydrogen leakage signal, and then controls the hydrogen inlet valve to close;

when the second controller judges that the received hydrogen concentration is greater than the hydrogen concentration safety threshold value, generating a second hydrogen leakage signal and sending the second hydrogen leakage signal to the first controller, wherein the first controller controls the high-pressure tube bundle to stop hydrogen output according to the second hydrogen leakage signal and sends the generated gas discharge stopping signal to the second controller;

the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet pipe to close according to the gas discharge stopping signal, and then controls the hydrogen inlet valve to close.

5. A combined control system for discharging gas from a high-pressure tube bundle vehicle to a gas discharging column is characterized by comprising a first controller, a high-pressure tube bundle, a gas discharging pipe, a gas discharging valve, a second controller, a hydrogen inlet pipe, a hydrogen inlet valve, a purging system and a compressor, wherein the first controller is in communication connection with the second controller, the gas discharging pipe is communicated with the high-pressure tube bundle, the hydrogen inlet valve is arranged in the hydrogen inlet pipe, and the hydrogen inlet pipe is communicated with the compressor;

the gas discharging pipe and the hydrogen inlet pipe are respectively provided with matched trigger modules which are matched and used for triggering the first controller and the second controller to generate gas discharging preparing signals;

the second controller is used for controlling a purging system of the gas discharging column to purge the pipeline in the gas discharging column after generating a gas discharging preparation signal, and the second controller generates a gas discharging signal and sends the gas discharging signal to the first controller after purging is completed;

the first controller controls hydrogen in the high-pressure tube bundle to enter a hydrogen inlet pipe through the gas discharge pipe according to a gas discharge signal, the second controller starts a compressor in the gas discharge column and opens a hydrogen inlet valve of the hydrogen inlet pipe according to the gas discharge signal, and the hydrogen introduced from the hydrogen inlet pipe is compressed and then is input into the storage tank;

the first controller is provided with an air pressure monitoring module which is used for monitoring the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube in real time; the first controller is also used for generating a gas unloading completion signal when the air pressure in the high-pressure tube bundle is equal to the air pressure in the gas unloading pipe, and sending the gas unloading completion signal to the second controller;

the second controller is provided with an air unloading stopping module, and the air unloading stopping module is used for controlling the compressor to stop and controlling the hydrogen inlet valve to be closed according to the air unloading finishing signal;

the first controller is also provided with a storage module for storing an air pressure safety threshold value and an air pressure adjustable threshold value;

the first controller is further provided with a comparison module, the comparison module is used for comparing the air pressure in the high-pressure tube bundle or the air pressure in the air discharge tube obtained by the air pressure monitoring module with an air pressure safety threshold and an air pressure adjustable threshold, and when any one of the air pressure in the high-pressure tube bundle and the air pressure in the air discharge tube exceeds the air pressure safety threshold and is located at the air pressure adjustable threshold, the first controller sends an air pressure abnormal signal to the second controller;

the second controller is provided with a pressure relief module, and the pressure relief module is used for controlling the hydrogen inlet pipe to be communicated with the emptying pipeline to relieve overpressure pressure according to the air pressure abnormal signal.

6. The combined control system for unloading gas from a gas unloading column of a high-pressure tube bundle vehicle as claimed in claim 5, wherein when the comparison module determines that any one of the gas pressure in the high-pressure tube bundle and the gas pressure in the gas unloading tube exceeds a gas pressure adjustable threshold, the first controller controls the high-pressure tube bundle to stop unloading gas, generates a gas unloading stop signal and sends the gas unloading stop signal to the second controller;

the gas unloading stopping module controls the compressor to stop and controls an emergency stop valve on the hydrogen inlet pipe to close according to the gas unloading stopping signal, and then controls the hydrogen inlet valve to close.

7. The combined control system for discharging gas from a gas discharging column of a high-pressure tube bundle vehicle as claimed in claim 5, wherein the purging system comprises a nitrogen purging system and a hydrogen purging system, the second controller is further provided with a purging control module, and the purging control module is used for controlling the hydrogen purging system to perform pipeline purging after the nitrogen purging system completes pipeline purging;

after the nitrogen purging system completes purging of the pipeline, the purging control module generates a hydrogen purging instruction, the second controller sends the hydrogen purging instruction to the first controller, the first controller controls the high-pressure tube bundle to introduce hydrogen into the hydrogen inlet tube, and the hydrogen purging system purges the pipeline by using the hydrogen introduced from the hydrogen inlet tube;

and when the hydrogen purging is finished, the purging control module of the second controller generates a purging finishing signal and sends the purging finishing signal to the first controller, and the first controller controls the high-pressure tube bundle to stop outputting the hydrogen according to the purging finishing signal.

8. The combined control system for discharging gas from a gas discharging column by a high-pressure tube bundle vehicle as claimed in claim 5, further comprising a hydrogen concentration sensor, wherein the hydrogen concentration sensor is used for detecting the hydrogen concentration in the shell of the gas discharging column and the hydrogen concentration in the high-pressure tube bundle vehicle in real time and sending the hydrogen concentration to the first controller or the second controller;

the first controller and the second controller are both provided with hydrogen concentration judgment modules, hydrogen safety concentration threshold values are prestored in the hydrogen concentration judgment modules, the hydrogen concentration judgment modules are used for judging whether the hydrogen concentration detected by the hydrogen concentration sensor is greater than the hydrogen safety concentration threshold value or not, and if the hydrogen safety concentration threshold value is greater than the hydrogen safety concentration threshold value, a hydrogen leakage signal is generated;

the first controller controls the high-pressure tube bundle to stop outputting hydrogen according to a hydrogen leakage signal, and the gas unloading stopping module of the second controller controls the compressor to stop and controls the emergency stop valve on the hydrogen inlet pipe to close according to the hydrogen leakage signal, and then controls the hydrogen inlet valve to close.

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