技术领域technical field
本发明涉及低压用气领域，特别是一种低压用气系统在多种工况下控制方法及系统。The invention relates to the field of low-pressure gas utilization, in particular to a method and system for controlling a low-pressure gas utilization system under various working conditions.
背景技术Background technique
水电站低压气系统设置有工业用气和微正压用气两套低压气系统，每套气系统设置有单独的空压机和储气罐，在两套气系统补气管路上设置连通管以及联通阀。正常情况下联通阀处于常闭状态，两套低压气系统独立运行稳定。通过长时间运行发现，两套低压气系统独立运行过程中存在不足：工业用气系统管路、阀门以及气罐密封性良好，用气量较少，空压机长期处于停机备用，年运行时间仅24小时；机组封闭母线运行过程中需要持续充气、耗气量大，微正压用气系统启动频繁，空压机运行周期约25分钟，运行时间约17分钟，空压机的频繁启停，导致空压机机油、情节油冷却器、进气过滤器等配件损耗严重，空压机故障发生率高，设备使用寿命也随之变短。The low-pressure gas system of the hydropower station is equipped with two sets of low-pressure gas systems for industrial gas and micro-positive pressure gas. valve. Under normal circumstances, the Unicom valve is normally closed, and the two low-pressure gas systems operate independently and stably. Through long-term operation, it is found that there are deficiencies in the independent operation of the two sets of low-pressure gas systems: the industrial gas system pipelines, valves, and gas tanks are well sealed, and the gas consumption is small. 24 hours; during the operation of the closed bus of the unit, it needs to be continuously inflated, the air consumption is large, the micro positive pressure air system starts frequently, the air compressor runs for about 25 minutes, and the running time is about 17 minutes. Air compressor oil, oil cooler, air intake filter and other accessories are seriously worn out, the air compressor failure rate is high, and the service life of the equipment is also shortened.
本专利为提高和均衡空压机利用率，延长设备使用寿命，基于现有系统设备不改变前提下，开展两套系统独立运行或者联络运行两种工况下的控制方法研究，以实现两套气系统随工况自由切换下均满足稳定可靠运行。In order to improve and balance the utilization rate of the air compressor and prolong the service life of the equipment, this patent, based on the premise that the existing system equipment does not change, conducts research on the control method of the two systems under the two working conditions of independent operation or joint operation, so as to realize two sets of The air system meets the requirements of stable and reliable operation under the free switching with the working conditions.
发明内容Contents of the invention
本部分的目的在于概述本发明的实施例的一些方面以及简要介绍一些较佳实施例。在本部分以及本申请的说明书摘要和发明名称中可能会做些简化或省略以避免使本部分、说明书摘要和发明名称的目的模糊，而这种简化或省略不能用于限制本发明的范围。The purpose of this section is to outline some aspects of embodiments of the invention and briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, abstract and titles, and such simplifications or omissions should not be used to limit the scope of the invention.
鉴于上述和/或现有的一种低压用气系统在多种工况下控制方法中存在的问题，提出了本发明。In view of the above and/or problems existing in a control method of a low-pressure gas consumption system under various working conditions, the present invention is proposed.
因此，本发明所要解决的问题是：基于现有系统设备不改变前提下，开展两套系统独立运行或者联络运行两种工况下的控制方法研究，以实现两套气系统随工况自由切换下均满足稳定可靠运行。Therefore, the problem to be solved by the present invention is: based on the premise that the existing system equipment does not change, carry out research on the control method under the two working conditions of independent operation or joint operation of the two sets of systems, so as to realize the free switching of the two sets of gas systems according to the working conditions Both meet the requirements of stable and reliable operation.
为解决上述技术问题，本发明提供如下技术方案：一种低压用气系统在多种工况下控制方法，其包括，建立虚拟化联络运行控制逻辑；对自动化元件进行监控，自动化元件故障时自动实现主备切换；对空压机进行监控，空压机故障时自动实现主备切换。In order to solve the above technical problems, the present invention provides the following technical solutions: a method for controlling a low-pressure gas consumption system under various working conditions, which includes establishing a virtualized connection operation control logic; monitoring automation components, and automatically Realize master-standby switchover; monitor the air compressor, and automatically realize master-standby switchover when the air compressor fails.
作为本发明所述一种低压用气系统在多种工况下控制方法的一种优选方案，其中：所述建立虚拟化联络运行控制包括，在不改变单个系统独立运行时控制逻辑前提下，新增虚拟化联络运行控制逻辑。As a preferred solution of the control method of a low-pressure gas consumption system under various working conditions in the present invention, wherein: the establishment of virtualized linkage operation control includes, without changing the control logic of a single system when it operates independently, Added virtualization contact operation control logic.
作为本发明所述一种低压用气系统在多种工况下控制方法的一种优选方案，其中：所述虚拟化联络运行控制逻辑包括，系统独立运行时，判断联通阀状态，若联通阀未处在全开状态，则退出当前流程；As a preferred solution of the control method of a low-pressure gas consumption system under various working conditions in the present invention, wherein: the virtualized connection operation control logic includes, when the system is running independently, judging the state of the connection valve, if the connection valve If it is not fully open, exit the current process;
若联通阀全开，则进入联络运行模式，进行判断工业用气和微正压用气网络连接；If the Unicom valve is fully open, it will enter the Liaison mode to judge the network connection of industrial gas and micro positive pressure gas;
若工业用气和微正压用气网络连接存在相关故障信号，则报出联合控制模式条件不满足信号，退出联络运行模式；If there is a relevant failure signal in the network connection of industrial gas and micro-positive pressure gas, a signal that the conditions of the joint control mode are not met will be reported, and the contact operation mode will be exited;
若工业用气和微正压用气网络连接没有故障信号，则以微正压气系统压力传感器为主用传感器，工业用气系统压力传感器为备用传感器，判断微正压气罐压力；If there is no fault signal in the network connection of industrial gas and micro positive pressure gas, the pressure sensor of the micro positive pressure gas system is used as the main sensor, and the pressure sensor of the industrial gas system is the backup sensor to judge the pressure of the micro positive pressure gas tank;
若微正压气罐压力下降至启主用空压机压力，则微正压系统将启主用空压机令传输到工业用气系统中，微正压气系统与工业用气系统各启一台空压机，当压力上升至停空压机压力后，两个系统同时停止；If the pressure of the micro positive pressure tank drops to the pressure of the main air compressor, the micro positive pressure system will transmit the command of the main air compressor to the industrial air system, and each of the micro positive pressure system and the industrial air system will start one Air compressor, when the pressure rises to the stop air compressor pressure, the two systems stop at the same time;
若微正压气罐压力下降至启备用空压机压力，则微正压系统将启备用空压机令传输到工业用气系统中，微正压气系统与工业用气系统各启两台空压机，当压力上升至停空压机压力后，两个系统同时停止；If the pressure of the micro positive pressure tank drops to the pressure of the standby air compressor, the micro positive pressure system will transmit the command of the standby air compressor to the industrial air system, and the micro positive pressure system and the industrial air system will each start two air compressors. machine, when the pressure rises to the stop air compressor pressure, the two systems stop at the same time;
设定启主用空压机压力为0.64Mpa，启备用空压机压力为0.60Mpa，停空压机压力为0.8Mpa；Set the pressure of the main air compressor to 0.64Mpa, the pressure of the standby air compressor to 0.60Mpa, and the pressure of the off-air compressor to 0.8Mpa;
所述相关故障信号包括，网络连接中断、工业用气PLC故障、微正压用气PLC故障。The relevant failure signals include interruption of network connection, PLC failure of industrial gas, and PLC failure of micro positive pressure gas.
作为本发明所述一种低压用气系统在多种工况下控制方法的一种优选方案，其中：所述自动化元件故障时自动实现主备切换包括，当进入联络运行模式时，以微正压气系统压力传感器为主用传感器，若主用传感器故障，则以工业用气压力传感器为主用传感器；若工业用气压力传感器故障，则以微正压气系统压力开关为主用传感器；若微正压气系统压力开关故障，则以工业用气系统压力开关为主用传感器。As a preferred solution of the control method of a low-pressure gas consumption system under various working conditions in the present invention, wherein: when the automatic component fails, the automatic master-standby switchover includes, The pressure sensor of the compressed air system is the main sensor. If the main sensor fails, the industrial air pressure sensor is used as the main sensor; If the pressure switch of the positive pressure gas system fails, the pressure switch of the industrial gas system is used as the main sensor.
作为本发明所述一种低压用气系统在多种工况下控制方法的一种优选方案，其中：所述空压机故障时自动实现主备切换包括，若未进入联络运行模式，则工业用气系统与微正压气系统两台空压机互为主备运行，两台空压机轮换启动。As a preferred solution of the control method of a low-pressure gas consumption system under various working conditions in the present invention, wherein: when the air compressor fails, the automatic master-standby switchover includes, if it does not enter the contact operation mode, the industrial The two air compressors of the gas system and the micro-positive air system are in active and standby operation with each other, and the two air compressors are started in rotation.
作为本发明所述一种低压用气系统在多种工况下控制方法的一种优选方案，其中：所述空压机故障时自动实现主备切换还包括，若进入联合控制模式，则四台空压机互为主备运行，其中两台主用，两台备用；若出现故障情况，根据空压机故障的数量进行相应的调整。As a preferred solution of the control method of a low-pressure gas consumption system under various working conditions in the present invention, wherein: when the air compressor fails, the automatic master-standby switching also includes, if entering the joint control mode, the four Two air compressors are in active and standby operation with each other, two of which are active and two are standby; if there is a failure, corresponding adjustments are made according to the number of air compressor failures.
作为本发明所述一种低压用气系统在多种工况下控制方法的一种优选方案，其中：微正压气系统压力开关故障，工业用气系统压力开关为主用传感器时，不影响空压机的正常启停和主备切换；若自动化元件均故障，则空压机无法接收到启动和停止信号，系统自动报警严重故障，由维护人员检查；As a preferred solution of the control method of a low-pressure gas system under various working conditions in the present invention, wherein: when the pressure switch of the micro-positive pressure gas system fails and the pressure switch of the industrial gas system is the main sensor, the air pressure will not be affected. Normal start-stop and main-standby switching of the compressor; if all the automation components fail, the air compressor cannot receive the start and stop signals, and the system will automatically alarm for serious failures and be checked by maintenance personnel;
空压机的故障不影响自动化元件的主用选择，若四台空压机均故障，则空压机接收到启动和停止信号后无法运行，系统自动报警严重故障，由维护人员检查。The failure of the air compressor does not affect the main selection of automation components. If all four air compressors fail, the air compressor cannot operate after receiving the start and stop signals. The system will automatically alarm for serious failures and be checked by maintenance personnel.
本发明的另外一个目的是提供一种低压用气系统在多种工况下控制方法的系统，其能通过两套系统独立运行或者联络运行两种工况下的控制系统，解决了现有两套低压气系统独立运行过程中存在的空压机的频繁启停，导致空压机机油、情节油冷却器、进气过滤器等配件损耗严重，空压机故障发生率高，设备使用寿命也随之变短的问题。Another object of the present invention is to provide a system of control methods for a low-pressure gas system under various working conditions, which can operate independently or in conjunction with the control systems under two working conditions through two sets of systems, which solves the problem of the existing two The frequent start and stop of the air compressor during the independent operation of the low-pressure air system leads to serious loss of air compressor oil, oil cooler, intake filter and other accessories, high failure rate of the air compressor, and shortened equipment life. The question then becomes shorter.
作为本发明所述一种低压用气系统在多种工况下控制系统的一种优选方案，其中：包括，PLC模块，数据记录模块，显示模块，报警模块；所述PLC模块包括，独立PLC通过网络连接虚拟成为主备PLC，实现数据交互，在不改变通讯结构的基础上通过特定功能块实现同网段不同IP的PLC间数据通信；所述数据记录模块用于记录系统运行状态和参数信息，以便后续分析和故障排查；所述显示模块用于实时监测系统状态，并且提供操作界面来进行系统配置和参数设置；所述报警模块用于提示操作员系统故障或异常情况。As a preferred scheme of the control system of a low-pressure gas system of the present invention under various working conditions, it includes: a PLC module, a data recording module, a display module, and an alarm module; the PLC module includes an independent PLC Virtually become the active and standby PLC through the network connection, realize data interaction, and realize data communication between PLCs with different IPs in the same network segment through specific function blocks without changing the communication structure; the data recording module is used to record the operating status and parameters of the system information for subsequent analysis and troubleshooting; the display module is used to monitor the system status in real time, and provides an operation interface for system configuration and parameter setting; the alarm module is used to prompt the operator for system failure or abnormal conditions.
一种计算机设备，包括存储器和处理器，所述存储器存储有计算机程序，其特征在于，所述处理器执行所述计算机程序时实现如上所述方法的步骤。A computer device includes a memory and a processor, the memory stores a computer program, and it is characterized in that, when the processor executes the computer program, the steps of the method described above are realized.
一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如上所述方法的步骤。A computer-readable storage medium, on which a computer program is stored, is characterized in that, when the computer program is executed by a processor, the steps of the above method are realized.
本发明有益效果为不改变现有系统设备的前提下，通过联通阀的打开和关闭来实现工业用气与微正压低压气系统的联络运行和独立运行。在联络运行时确保四台空压机运行周期变长，运行时间和次数保持一致，提高了低压气系统运行可靠性和设备使用寿命。工业用气和微正压低压气系统联络运行均衡了空压机利用率，提高了低压气系统的运行可靠性，降低了因某台空压机损坏导致低压气系统失效的概率。联络运行情况下有四个传感器和四台空压机，极限情况下只剩一个传感器或空压机也能维持气系统的正常运行，提高了低压气系统的稳定性和冗余度。The beneficial effect of the present invention is that, under the premise of not changing the existing system equipment, the connection operation and independent operation of the industrial gas and the micro-positive pressure low-pressure gas system are realized through the opening and closing of the communication valve. During the liaison operation, it is ensured that the operation period of the four air compressors becomes longer, and the operation time and times are consistent, which improves the operation reliability of the low-pressure air system and the service life of the equipment. The joint operation of industrial gas and micro-positive pressure low-pressure air system balances the utilization rate of air compressors, improves the operational reliability of the low-pressure air system, and reduces the probability of failure of the low-pressure air system due to damage to an air compressor. There are four sensors and four air compressors in the case of contact operation, and only one sensor or air compressor can maintain the normal operation of the air system in extreme cases, which improves the stability and redundancy of the low-pressure air system.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。其中：In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort. in:
图1为实施例1中一种低压用气系统在多种工况下控制方法流程图。Fig. 1 is a flowchart of a control method of a low-pressure gas consumption system under various working conditions in Embodiment 1.
图2为实施例2中一种低压用气系统在多种工况下控制系统的结构图。Fig. 2 is a structural diagram of the control system of a low-pressure gas consumption system in embodiment 2 under various working conditions.
图3为实施例3中一种低压用气系统在多种工况下控制方法及系统的新增DTM通讯设备图。FIG. 3 is a diagram of a control method of a low-pressure gas consumption system under various working conditions and a newly added DTM communication device of the system in Embodiment 3. FIG.
图4为实施例3中一种低压用气系统在多种工况下控制方法及系统的进入新建DTM通讯设备图。Fig. 4 is a diagram of the control method of a low-pressure gas consumption system under various working conditions and the entry of the system into the new DTM communication equipment in embodiment 3.
图5为实施例3中一种低压用气系统在多种工况下控制方法及系统的新增通讯请求图。Fig. 5 is a diagram of a new communication request of a control method and system of a low-pressure gas consumption system under various working conditions in Embodiment 3.
图6为实施例3中一种低压用气系统在多种工况下控制方法及系统的自定义项目图。Fig. 6 is a diagram of a control method and a self-defined project of a low-pressure gas consumption system under various working conditions in Embodiment 3.
图7为实施例3中一种低压用气系统在多种工况下控制方法及系统的检查wzy变量图。Fig. 7 is a control method and system inspection wzy variable diagram of a low-pressure gas consumption system under various working conditions in embodiment 3.
图8为实施例3中一种低压用气系统在多种工况下控制方法及系统的新增BOOL型变量图。Fig. 8 is a control method of a low-pressure gas consumption system under various working conditions in Embodiment 3 and a newly added BOOL type variable diagram of the system.
图9为实施例3中一种低压用气系统在多种工况下控制方法及系统的新增程序段图。FIG. 9 is a block diagram of a control method and system for a low-pressure gas consumption system under various working conditions in Embodiment 3.
图10为实施例3中一种低压用气系统在多种工况下控制方法及系统的修改启泵逻辑图。Fig. 10 is a logic diagram of the modification of the control method and system for a low-pressure gas consumption system under various working conditions in Embodiment 3.
具体实施方式Detailed ways
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合说明书附图对本发明的具体实施方式做详细的说明。In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是本发明还可以采用其他不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似推广，因此本发明不受下面公开的具体实施例的限制。In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
其次，此处所称的“一个实施例”或“实施例”是指可包含于本发明至少一个实现方式中的特定特征、结构或特性。在本说明书中不同地方出现的“在一个实施例中”并非均指同一个实施例，也不是单独的或选择性的与其他实施例互相排斥的实施例。Second, "one embodiment" or "an embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.
实施例1Example 1
参照图1，为本发明第一个实施例，该实施例提供了一种低压用气系统在多种工况下控制方法，包括建立虚拟化联络运行控制逻辑；对自动化元件进行监控，自动化元件故障时自动实现主备切换；对空压机进行监控，空压机故障时自动实现主备切换。Referring to Fig. 1, it is the first embodiment of the present invention, which provides a method for controlling a low-pressure gas consumption system under various working conditions, including establishing a virtualized connection operation control logic; monitoring the automation components, and the automation components Automatically realize active-standby switchover in case of failure; monitor the air compressor, and automatically realize active-standby switchover in case of air compressor failure.
不改变单个系统独立运行时控制逻辑前提下，新增虚拟化联络运行控制逻辑，其控制逻辑详细执行步骤如下：Under the premise of not changing the control logic of a single system running independently, the control logic of virtualized connection operation is added. The detailed execution steps of the control logic are as follows:
S1、系统独立运行时，判断联通阀状态，若联通阀未处在全开状态，则退出当前流程；若联通阀全开，则进入联络运行模式，进入S2。S1. When the system is running independently, judge the state of the connecting valve. If the connecting valve is not fully open, exit the current process; if the connecting valve is fully open, enter the connection operation mode and enter S2.
S2、判断工业用气和微正压用气网络连接正常，若存在相关故障信号，则进入S3，若没有故障信号，则进入S4。S2. Judging that the network connection of industrial gas and micro positive pressure gas is normal, if there is a relevant fault signal, go to S3, if there is no fault signal, go to S4.
S3、报出联合控制模式条件不满足信号，退出联络运行模式。S3. Reporting a signal that the condition of the joint control mode is not satisfied, and exiting the joint operation mode.
S4、以微正压气系统压力传感器为主用传感器，工业用气系统压力传感器为备用传感器，当微正压气罐压力下降至启主用空压机压力时进入S5，当微正压气罐压力下降至启备用空压机压力时进入S6。S4. Use the pressure sensor of the micro positive pressure air system as the main sensor, and the pressure sensor of the industrial gas system as the backup sensor. When the pressure of the micro positive pressure air tank drops to the pressure of the main air compressor, enter S5. When the pressure of the micro positive pressure air tank drops Enter S6 when the pressure of the spare air compressor is turned on.
微正压气系统主要功能是将压缩空气充入到封闭母线筒中，使母线筒内的空气压力始终保持在微正压状态，防止外界含有水分、灰尘的空气进入封闭母线筒内，避免母线绝缘下降、闪烙、漏氢等不正常现象；工业用气主要用于技术供水、集水井及排水廊道风动工具用气及吹扫用气，两套系统均选用螺杆式空压机，其额定压力为0.80Mpa，考虑用气设备功能要求为大于大气压，且压力能够吹动井底淤泥；同时确保系统压力在一定范围内，避免空压机频繁启停；空压机额定压力这三方面因素，选定微正压系统和工业用气系统正常压力工作范围为0.64Mpa-0.80Mpa，当某一瞬间用气量增大导致压力下降过快时，同时启动多台空压机使压力恢复正常。因此程序中设定启主用空压机压力为0.64Mpa，启备用空压机压力为0.60Mpa，停空压机压力为0.80Mpa；The main function of the micro-positive pressure air system is to fill the compressed air into the closed busbar barrel, so that the air pressure in the busbar barrel is always kept in a slightly positive pressure state, preventing the outside air containing moisture and dust from entering the closed busbar barrel, and avoiding the insulation drop of the busbar , flashing, hydrogen leakage and other abnormal phenomena; industrial gas is mainly used for technical water supply, gas for water collection wells and drainage corridors, air for pneumatic tools and air for purging. Both sets of systems use screw air compressors. The pressure is 0.80Mpa, considering that the function requirements of the gas equipment are greater than the atmospheric pressure, and the pressure can blow the mud at the bottom of the well; at the same time, ensure that the system pressure is within a certain range to avoid frequent start and stop of the air compressor; the rated pressure of the air compressor. , Select the normal pressure working range of the micro positive pressure system and industrial gas system to be 0.64Mpa-0.80Mpa. When the gas consumption increases at a certain moment and the pressure drops too fast, start multiple air compressors at the same time to restore the pressure to normal. Therefore, the program sets the pressure of the main air compressor to 0.64Mpa, the pressure of the standby air compressor to 0.60Mpa, and the pressure of the air compressor to stop to 0.80Mpa;
S5：微正压系统将启主用空压机令传输到工业用气系统中，微正压气系统与工业用气系统各启一台空压机，当压力上升至停空压机压力后，两个系统同时停止。S5: The micro-positive pressure system transmits the command to start the main air compressor to the industrial air system. The micro-positive pressure system and the industrial air system each start an air compressor. When the pressure rises to the pressure of the air compressor, Both systems stop at the same time.
S6：微正压系统将启备用空压机令传输到工业用气系统中，微正压气系统与工业用气系统各启两台空压机，当压力上升至停空压机压力后，两个系统同时停止。S6: The micro positive pressure system transmits the command to start the spare air compressor to the industrial air system. The micro positive pressure system and the industrial air system respectively start two air compressors. systems stop at the same time.
自动化元件故障时自动实现主备切换，其控制逻辑详细执行步骤如下：When the automation component fails, the active and standby switching is automatically realized. The detailed execution steps of the control logic are as follows:
当进入联络运行模式时，以微正压气系统压力传感器为主用传感器，当主用传感器故障时，进入以下步骤。When entering the connection operation mode, the pressure sensor of the micro positive air pressure system is used as the main sensor. When the main sensor fails, enter the following steps.
以工业用气压力传感器为主用传感器，当工业用气压力传感器故障时，进入以下步骤。Use the industrial air pressure sensor as the main sensor. When the industrial air pressure sensor fails, proceed to the following steps.
以微正压气系统压力开关为主用传感器，当微正压气系统压力开关故障时，进入以下步骤。Use the pressure switch of the micro-positive air system as the main sensor. When the pressure switch of the micro-positive air system fails, proceed to the following steps.
以工业用气系统压力开关为主用传感器。The pressure switch of the industrial gas system is the main sensor.
空压机故障时自动实现主备切换，其控制逻辑详细执行布置如下：When the air compressor fails, the active/standby switchover is automatically realized, and the detailed implementation of the control logic is arranged as follows:
当未进入联络运行模式时，工业用气系统与微正压气系统两台空压机互为主备运行，两台空压机轮换启动。当进入联合控制模式时，进入以下步骤。When the connection operation mode is not entered, the two air compressors of the industrial air system and the micro positive pressure air system operate as the master and backup of each other, and the two air compressors start in rotation. When entering joint control mode, enter the following steps.
四台空压机互为主备运行，其中两台主用，两台备用；若出现故障情况，根据空压机故障的数量进行相应的调整，当一台空压机故障时，进入以下步骤。The four air compressors operate as master and backup each other, two of which are active and two are standby; if there is a failure, make corresponding adjustments according to the number of air compressor failures. When one air compressor fails, enter the following steps .
三台空压机互为主备运行，其中两台主用，一台备用；当还有一台空压机故障时，进入以下步骤。The three air compressors are in active and standby operation, two of which are active and one is in standby; when the other air compressor is faulty, proceed to the following steps.
两台空压机互为主备运行，其中一台主用，一台备用；当再有一台空压机故障时，进入以下步骤。The two air compressors operate as master and backup each other, one of which is active and the other is standby; when another air compressor fails, enter the following steps.
一台空压机独立运行。One air compressor operates independently.
微正压气系统压力开关故障，工业用气系统压力开关为主用传感器时，不影响空压机的正常启停和主备切换；若自动化元件均故障，则空压机无法接收到启动和停止信号，系统自动报警严重故障，由维护人员检查。The pressure switch of the micro-positive air system is faulty. When the pressure switch of the industrial air system is the main sensor, it will not affect the normal start-stop and main-standby switching of the air compressor; if all the automation components fail, the air compressor cannot receive start and stop. signal, the system automatically alarms for serious faults and is checked by maintenance personnel.
空压机的故障不影响自动化元件的主用选择，若四台空压机均故障，则空压机接收到启动和停止信号后无法运行，系统自动报警严重故障，由维护人员检查。The failure of the air compressor does not affect the main selection of automation components. If all four air compressors fail, the air compressor cannot operate after receiving the start and stop signals. The system will automatically alarm for serious failures and be checked by maintenance personnel.
本专利不改变现有系统设备的前提下，通过联通阀的打开和关闭来实现工业用气与微正压低压气系统的联络运行和独立运行。在联络运行时确保四台空压机运行周期变长，运行时间和次数保持一致，提高了低压气系统运行可靠性和设备使用寿命。Under the premise of not changing the existing system equipment, this patent realizes the connection operation and independent operation of the industrial gas and the micro-positive pressure low-pressure gas system through the opening and closing of the connecting valve. During the liaison operation, it is ensured that the operation period of the four air compressors becomes longer, and the operation time and times are consistent, which improves the operation reliability of the low-pressure air system and the service life of the equipment.
工业用气和微正压低压气系统联络运行均衡了空压机利用率，提高了低压气系统的运行可靠性，降低了因某台空压机损坏导致低压气系统失效的概率。The joint operation of industrial gas and micro-positive pressure low-pressure air system balances the utilization rate of air compressors, improves the operational reliability of the low-pressure air system, and reduces the probability of failure of the low-pressure air system due to damage to an air compressor.
联络运行情况下有四个传感器和四台空压机，极限情况下只剩一个传感器或空压机也能维持气系统的正常运行，提高了低压气系统的稳定性和冗余度。There are four sensors and four air compressors in the case of contact operation, and only one sensor or air compressor can maintain the normal operation of the air system in extreme cases, which improves the stability and redundancy of the low-pressure air system.
实施例2Example 2
参照图2，为本发明第二个实施例，其不同于第一个实施例的是：该实施例提供了一种低压用气系统在多种工况下控制系统，还包括，PLC模块，数据记录模块，显示模块，报警模块。Referring to Fig. 2, it is the second embodiment of the present invention, which is different from the first embodiment in that: this embodiment provides a control system of a low-pressure gas system under various working conditions, and also includes a PLC module, Data recording module, display module, alarm module.
PLC模块包括，独立PLC通过网络连接虚拟成为主备PLC，实现数据交互，PLC采用施耐德M580系列PLC，在不改变通讯结构的基础上通过特定功能块实现同网段不同IP的PLC间数据通信。The PLC module includes, the independent PLC becomes the active and standby PLC through the network connection to realize data interaction. The PLC adopts the Schneider M580 series PLC, and realizes the data communication between PLCs with different IPs in the same network segment through specific function blocks without changing the communication structure.
数据记录模块用于记录系统运行状态和参数信息，以便后续分析和故障排查。The data recording module is used to record the system operating status and parameter information for subsequent analysis and troubleshooting.
显示模块用于实时监测系统状态，并且提供操作界面来进行系统配置和参数设置。The display module is used for real-time monitoring of the system status, and provides an operation interface for system configuration and parameter setting.
报警模块用于提示操作员系统故障或异常情况。The alarm module is used to prompt the operator for system failure or abnormal conditions.
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-OnlyMemory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，“计算机可读介质”可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。The logic and/or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium, For use with instruction execution systems, devices, or devices (such as computer-based systems, systems including processors, or other systems that can fetch instructions from instruction execution systems, devices, or devices and execute instructions), or in conjunction with these instruction execution systems, devices or equipment used. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use in or in conjunction with an instruction execution system, device or device.
计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)、便携式计算机盘盒(磁装置)、随机存取存储器(RAM)、只读存储器(ROM)、可擦除可编辑只读存储器(EPROM或闪速存储器)、光纤装置以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。More specific examples (non-exhaustive list) of computer-readable media include the following: electrical connection with one or more wires (electronic device), portable computer disk case (magnetic device), random access memory (RAM), Read-Only Memory (ROM), Erasable and Editable Read-Only Memory (EPROM or Flash), Fiber Optic, and Compact Disc Read-Only Memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program can be printed, as it may be possible, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or other suitable processing if necessary. The program is processed electronically and stored in computer memory.
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。It should be understood that various parts of the present invention can be realized by hardware, software, firmware or their combination. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques known in the art: Discrete logic circuits, ASICs with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.
实施例3Example 3
参照图3-10，为本发明第三个实施例，其不同于前两个实施例的是：Referring to Fig. 3-10, it is the third embodiment of the present invention, which is different from the first two embodiments in that:
步骤一：在工业用气低压气系统PLC中新增DTM通讯设备，在菜单栏打开“工具”-“DTM浏览器”，选择NOC模块，点击鼠标右键打开菜单栏，点击“添加”，选择Modbus Device设备，点击添加DTM，新增一个DTM通讯设备，如图3所示。Step 1: Add a DTM communication device to the industrial gas low-pressure gas system PLC, open "Tools" - "DTM Browser" in the menu bar, select the NOC module, click the right mouse button to open the menu bar, click "Add", and select Modbus Device, click Add DTM to add a DTM communication device, as shown in Figure 3.
步骤二：双击打开NOC控制模块，点击配置服务，在设备列表下会出现刚才新建的设备，如图4所示。Step 2: Double-click to open the NOC control module, click Configure Service, and the newly created device will appear under the device list, as shown in Figure 4.
步骤三：在地址设置里将地址修改为微正压低压气系统通讯系统，并点击应用，打开请求设置窗口，点击“添加请求”新增一个通信请求，将请求第一行中的“重复速率”修改为100，读取地址修改为400，读取长度修改为1，其他参数保持默认，并点击应用，如图5所示。Step 3: In the address setting, change the address to the micro positive pressure low pressure gas system communication system, and click Apply to open the request setting window, click "Add request" to add a new communication request, and the "repeat rate" in the first line will be requested "Change to 100, read address to 400, read length to 1, keep other parameters default, and click Apply, as shown in Figure 5.
步骤四：点击左侧设备下的“请求001：项目”进入右侧“输入”窗口，选中列表中所有项目，点击“自定义项目”，项目定义如下图所示，项目名称为di，设置完成点击“确认”-“应用”，如图6所示。Step 4: Click "Request 001: Project" under the device on the left to enter the "Input" window on the right, select all the items in the list, and click "Custom Project". The project definition is shown in the figure below. The project name is di, and the setting is complete Click "Confirm" - "Apply", as shown in Figure 6.
步骤五：修改完成后点击保存，在变量和FB实例下点击设备DDT变量，检查wzy变量已生成，在Inputs下有一个INT型的di点，如图7所示。Step 5: Click Save after the modification is complete, click the device DDT variable under Variables and FB instance, check that the wzy variable has been generated, and there is an INT type di point under Inputs, as shown in Figure 7.
步骤六：在基本变量下新建变量Need_One_Pump_start_temp，Need_One_Pump_start_wzy，Need_Two_pumps_start_temp，Need_Two_pumps_start_wzy，变量类型选择BOOL型。将DI32的注释修改为联通阀全开。在程序-逻辑-控制逻辑程序段中将FBI_19的Need_One_Pump_start、Need_Two_Pumps_start替换为Need_One_Pump_start_temp，Need_Two_Pumps_start_temp，如图8。Step 6: Create new variables Need_One_Pump_start_temp, Need_One_Pump_start_wzy, Need_Two_pumps_start_temp, Need_Two_pumps_start_wzy under the basic variables, and select BOOL as the variable type. Modify the comment of DI32 to read that the cross valve is fully open. In the program-logic-control logic segment, replace Need_One_Pump_start and Need_Two_Pumps_start of FBI_19 with Need_One_Pump_start_temp and Need_Two_Pumps_start_temp, as shown in Figure 8.
步骤七：新增程序段，使用INT_TO_BIT功能块，将INT型的wzy.Inputs.di转换成BOOL型变量，如图9所示，然后修改启泵逻辑如图10所示。Step 7: Add a program segment, use the INT_TO_BIT function block to convert the INT type wzy.Inputs.di into a BOOL type variable, as shown in Figure 9, and then modify the pump start logic as shown in Figure 10.
修改微正压的程序与工业用气一致。The procedure for modifying the micro positive pressure is consistent with industrial gas.
水电站低压气系统设置有工业用气和微正压用气两套低压气系统，每套气系统设置有单独的空压机和储气罐，在两套气系统补气管路上设置连通管以及联通阀。正常情况下联通阀处于常闭状态，两套低压气系统独立运行稳定。通过长时间运行发现，两套低压气系统独立运行过程中存在不足：工业用气系统管路、阀门以及气罐密封性良好，用气量较少，空压机长期处于停机备用；机组封闭母线运行过程中需要持续充气、耗气量大，微正压用气系统启动频繁，空压机的频繁启停，导致空压机机油、情节油冷却器、进气过滤器等配件损耗严重，空压机故障发生率高，设备使用寿命也随之变短。The low-pressure gas system of the hydropower station is equipped with two sets of low-pressure gas systems for industrial gas and micro-positive pressure gas. valve. Under normal circumstances, the Unicom valve is normally closed, and the two low-pressure gas systems operate independently and stably. Through long-term operation, it is found that there are deficiencies in the independent operation of the two low-pressure gas systems: the pipelines, valves and gas tanks of the industrial gas system are well sealed, the gas consumption is small, and the air compressor is shut down for a long time for standby; the unit operates with a closed bus During the process, it needs to be continuously inflated, and the air consumption is large. The micro positive pressure air system starts frequently, and the air compressor starts and stops frequently, resulting in serious loss of air compressor oil, oil cooler, intake filter and other accessories. The failure rate is high, and the service life of the equipment is also shortened.
本专利为提高和均衡空压机利用率，延长设备使用寿命，基于现有系统设备不改变前提下，开展两套系统独立运行或者联络运行两种工况下的控制方法研究，以实现两套气系统随工况自由切换下均满足稳定可靠运行。In order to improve and balance the utilization rate of the air compressor and prolong the service life of the equipment, this patent, based on the premise that the existing system equipment does not change, conducts research on the control method of the two systems under the two working conditions of independent operation or joint operation, so as to realize two sets of The air system meets the requirements of stable and reliable operation under the free switching with the working conditions.
本实施例利用传统方法和我方发明方法同时运行，其检测对比结果如下表所示：This embodiment utilizes the traditional method and the method of our invention to run simultaneously, and its detection comparison results are shown in the following table:
表1传统方法与我方发明方法对比表Table 1 Contrast table between traditional method and our invention method
通过上述对比结果可以看出，本发明方法的工业用气运行周期为20h比传统方法工业用气运行周期的34h减少了14h；本发明方法的工业用气运行时间为6min比传统方法工业用气运行时间的2min提高了4min；本发明方法的微正压运行周期为20h比传统方法微正压运行周期的17min增加了1183min；本发明方法的微正压运行时间为6min比传统方法微正压运行时间的25min减少了4、19min；本发明方法的故障发生率为0.6％比传统方法的故障发生率3％降低了2.4％；本发明方法的使用寿命为10年比传统方法的使用寿命7年增加了3年。As can be seen from the above comparison results, the industrial gas operation cycle of the inventive method is 20h and has reduced 14h than the 34h of the traditional method industrial gas operating cycle; the industrial gas operating time of the inventive method is 6min than the traditional method industrial gas operation time The 2min of running time has improved 4min; The slight positive pressure operating cycle of the inventive method is 20h and has increased 1183min than the 17min of the traditional method slight positive pressure operating cycle; The slight positive pressure operating time of the inventive method is 6min than traditional method slight positive pressure The 25min of running time has reduced 4,19min; The failure incidence rate of the inventive method is 0.6% and has reduced 2.4% compared with the failure incidence rate 3% of the traditional method; The service life of the inventive method is 10 years than the service life of the traditional method 7 Year added 3 years.
我方发明方法在联络运行时确保四台空压机运行周期变长，运行时间和次数保持一致，提高了低压气系统运行可靠性和设备使用寿命。The method invented by our company ensures that the operating cycle of the four air compressors becomes longer during the joint operation, and the operating time and times are consistent, which improves the operating reliability of the low-pressure air system and the service life of the equipment.
应说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的精神和范围，其均应涵盖在本发明的权利要求范围当中。It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.
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| CN202310718692.2ACN116658406B (en) | 2023-06-16 | 2023-06-16 | A control method and system for a low-pressure gas system under various working conditions |
| Application Number | Priority Date | Filing Date | Title |
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| CN202310718692.2ACN116658406B (en) | 2023-06-16 | 2023-06-16 | A control method and system for a low-pressure gas system under various working conditions |
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| CN116658406B CN116658406B (en) | 2025-09-23 |
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| CN202310718692.2AActiveCN116658406B (en) | 2023-06-16 | 2023-06-16 | A control method and system for a low-pressure gas system under various working conditions |
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