Disclosure of Invention
Aiming at the problems in the related art, the invention provides a valve performance detection system, which solves the problems that most of the existing valve performance detection systems are manually operated, the requirements of the modern automation level cannot be met, errors are easily caused in the manual operation, and the valve performance cannot be accurately detected.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
The valve performance detection system comprises a gas booster pump, wherein the gas booster pump is connected with a speed regulating valve, the speed regulating valve is connected with a filtering pressure regulating valve, and the filtering pressure regulating valve is connected with a driving gas input port; the gas booster pump is also connected with a first stop valve, a first pressure transmitter is connected between the gas booster pump and the first stop valve, and the first stop valve is connected with an air input port I; the gas booster pump is also connected with a first pneumatic valve, the first pneumatic valve is connected with a second stop valve, and the second stop valve is connected with a second air input port; the gas booster pump is also connected with a safety valve, the safety valve is connected with a pressure transmitter II, the pressure transmitter II is connected with a pneumatic control pressure reducing valve I, the pneumatic control pressure reducing valve I is connected with a pressure transmitter III, the pressure transmitter III is connected with a pneumatic valve II, the pneumatic valve II is connected with a pressure transmitter IV, and the pressure transmitter IV is connected with an output port I; the pressure transmitter IV is also connected with a pneumatic valve III, the pneumatic valve III is connected with a regulating valve I, and the regulating valve I is connected with a pressure relief port; the first regulating valve is also connected with a second regulating valve, the second regulating valve is connected with a fourth pneumatic valve, and the fourth pneumatic valve is connected with a second output port; the first regulating valve is also connected with a third regulating valve, the third regulating valve is connected with a fifth pneumatic valve, and the fifth pneumatic valve is connected with a third output port; the first pneumatic valve is also connected with a pressure transmitter five, the pressure transmitter five is connected with a pressure reducing valve, the pressure reducing valve is connected with a pressure transmitter six, the pressure transmitter six is connected with a pneumatic valve six, the pneumatic valve six is connected with a pressure transmitter seven, and the pressure transmitter seven is connected with an output port three; the first output port, the second output port and the third output port are all connected with a test path interface, the test path interface is connected with a pressure transmitter eight, the pressure transmitter eight is connected with a pressure transmitter nine, the pressure transmitter nine is connected with an instrument valve, the pressure transmitter nine is also connected with a pneumatic valve seven, and the pneumatic valve seven is connected with a leak detector; the speed regulating valve is also connected with an electromagnetic valve, and the electromagnetic valve is connected with an electric proportional valve.
Further, a pneumatic valve eight is connected between the second pressure transmitter and the first pneumatic control pressure reducing valve.
Further, the measuring ranges of the third pressure transmitter and the fourth pressure transmitter are all 0-25MPa.
Further, the measuring ranges of the third pressure transmitter and the fourth pressure transmitter are all 0-0.6MPa.
Further, the pressure transmitter IV is connected with a one-way valve, and the one-way valve is connected with the output port II.
Further, the leak detector is a helium mass spectrometer leak detector.
Further, the gas booster pump is connected with the stop valve I through a stainless steel pipeline I, and the specification of the stainless steel pipeline is SS-6-2 THT-3R60-9.53-1.24.
Further, the gas booster pump is connected with the first pressure transmitter through a second stainless steel pipeline, and the specification of the second stainless steel pipeline is SS-4-2 THT-3R60-6.35-1.24.
Further, the gas booster pump is connected with the speed regulating valve through a copper pipe.
Further, the speed regulating valve is connected with the filtering pressure regulating valve through an air hose.
The invention has the beneficial effects that: compared with the traditional equipment with single function, the valve performance detection system improves the test efficiency, and can independently complete the steps of air supply, pressure regulation, detection and the like of the test; compared with the traditional manual operation, the invention adopts an automatic control mode, so that the pressure control and collection of the test are more accurate, and the leak rate of the test is more accurate by adopting advanced test equipment; the safety and the convenience of the test are improved, the labor cost is reduced, the danger of high-pressure gas to operators is reduced, the full-automatic pressure control and distribution are realized, and a safety valve, a scram button and an audible and visual alarm are arranged; the pressurizing element adopts an oil-free lubrication technology, the system does not need lubrication equipment, the cost of all lubricating oil is saved, and the environmental pollution is reduced; each part of the components can realize remote control, a user can set test parameters by himself to complete various performance tests, test data and curves can be flexibly stored, and analysis is facilitated; full-automatic remote control, no human intervention is required in the test process.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
As shown in fig. 1, a valve performance detection system according to an embodiment of the present invention includes a gas booster pump 1, the gas booster pump 1 is connected with a speed regulation valve 2, the speed regulation valve 2 is connected with a filter pressure regulating valve 3, and the filter pressure regulating valve 3 is connected with a driving gas input port 4; the gas booster pump 1 is also connected with a stop valve I6, a pressure transmitter I5 is connected between the gas booster pump 1 and the stop valve I6, and the stop valve I6 is connected with an air input port I7; the gas booster pump 1 is also connected with a first pneumatic valve 8, the first pneumatic valve 8 is connected with a second stop valve 9, and the second stop valve 9 is connected with a second air input port 10; the gas booster pump 1 is also connected with a safety valve 13, the safety valve 13 is connected with a second pressure transmitter 14, the second pressure transmitter 14 is connected with a first pneumatic control pressure reducing valve 15, the first pneumatic control pressure reducing valve 15 is connected with a third pressure transmitter 16, the third pressure transmitter 16 is connected with a second pneumatic valve 17, the second pneumatic valve 17 is connected with a fourth pressure transmitter 18, and the fourth pressure transmitter 18 is connected with a first output port 19; the pressure transmitter IV 18 is also connected with a pneumatic valve III 20, the pneumatic valve III 20 is connected with a regulating valve I21, and the regulating valve I21 is connected with a pressure relief port 22; the first regulating valve 21 is also connected with a second regulating valve 23, the second regulating valve 23 is connected with a fourth pneumatic valve 24, and the fourth pneumatic valve 24 is connected with a second output port 25; the first regulating valve 21 is also connected with a third regulating valve 26, the third regulating valve 26 is connected with a fifth pneumatic valve 27, and the fifth pneumatic valve 27 is connected with a third output port 28; the first pneumatic valve 8 is also connected with a fifth pressure transmitter 29, the fifth pressure transmitter 29 is connected with a pressure reducing valve 30, the pressure reducing valve 30 is connected with a sixth pressure transmitter 31, the sixth pressure transmitter 31 is connected with a sixth pneumatic valve 32, the sixth pneumatic valve 32 is connected with a seventh pressure transmitter 33, and the seventh pressure transmitter 33 is connected with the third output port 28; the first output port 19, the second output port 25 and the third output port 28 are all connected with a test path interface 34, the test path interface 34 is connected with a pressure transmitter eight 35, the pressure transmitter eight 35 is connected with a pressure transmitter nine 37, the pressure transmitter nine 37 is connected with an instrument valve 36, the pressure transmitter nine 37 is also connected with a pneumatic valve seven 38, and the pneumatic valve seven 38 is connected with a leak detector 39; the speed regulating valve 2 is also connected with a solenoid valve 11, and the solenoid valve 11 is connected with an electric proportional valve 12.
In this embodiment, a pneumatic valve eight 40 is connected between the second pressure transmitter 14 and the first pneumatic control pressure reducing valve 15.
In this embodiment, the measuring ranges of the third pressure transmitter 16 and the fourth pressure transmitter 18 are all 0-25MPa.
In this embodiment, the measuring ranges of the third pressure transmitter 16 and the fourth pressure transmitter 18 are all 0-0.6MPa.
In this embodiment, the fourth pressure transmitter 18 is connected to a check valve 45, and the check valve 45 is connected to the second output port 25.
In this embodiment, the leak detector 39 is a helium mass spectrometer leak detector.
In this embodiment, the gas booster pump 1 is connected to the first stop valve 6 through a first stainless steel pipeline, and the stainless steel pipeline has a specification of SS-6-2 THT-3R60-9.53-1.24.
In this embodiment, the gas booster pump 1 is connected to the first pressure transmitter 5 through a second stainless steel pipeline, and the second stainless steel pipeline has a specification of SS-4-2 THT-3R60-6.35-1.24.
In this embodiment, the gas booster pump 1 is connected to the speed regulating valve 2 through a copper pipe.
In this embodiment, the speed valve 2 is connected to the filter pressure regulating valve 3 via an air hose.
In order to facilitate the further understanding of the above technical solution, the structural working principle thereof will now be described:
As shown in fig. 1, such a valve performance detection system includes: a gas distribution table, a high-low temperature vacuum test box and a leak detector 39. The method can be used for detecting whether the air tightness of the valve at different temperatures and pressures is qualified or not; in the process design of the system, a gas distribution flow and a leakage rate detection flow are reasonably designed according to the test function requirement of a tested piece; in a pressure regulating path in a gas distribution flow, a gas booster pump 1 is used for boosting the gas inlet pressure to the highest test value, a pneumatic control pressure reducing valve is used for regulating the pressure according to test requirements, and the whole process of a control system automatically regulates and outputs; in a pressure relief path of the gas distribution flow, a pressure relief pipeline is controlled by a manual pressure relief valve and a pneumatic pressure relief valve, and a regulating valve is added behind the pneumatic pressure relief valve to control the relief speed, so that noise is reduced; in the leak rate detection process, the leak detector 39 and the vacuum pump are integrated on a small trolley, so that the device is convenient to move and use.
When the valve is in operation, the air source gas is subjected to supercharging or depressurizing operation through the air distribution table to obtain a pressure source meeting the test pressure requirement of the valve, a corresponding test environment is provided through the high-low temperature vacuum test box, and finally the leak detector 39 is used for detecting whether the test valve meets the requirement. The main function of the gas distribution table is to convey helium, air or nitrogen gas sources to a test piece after pressure regulation, a gas booster pump 1 of the United states haskel is used as a pressurizing component, and the pressure regulation is realized by using a pneumatic control pressure reducing valve I15 and a pneumatic control pressure reducing valve II 41. The high-low temperature environment for the valve test is provided by a high-low temperature vacuum test box, and the vacuum can be pumped through the gas booster pump 1 to provide a vacuum environment for the valve test. The leak detector 39 is selected from the German INFICON original-set inlet product, model MOUDUL1000, the minimum detectable leak rate (vacuum mode) is less than 5X 10-13 Pa.m3/s, and the minimum detectable leak rate (suction gun mode) is less than 5X 10-9 Pa.m3/s. The gas booster pump 1 is a lubrication-free reciprocating piston type booster device, the area of the driving gas pressure is A, the area of the output gas pressure is B, and the area ratio of boosting is FA.pa/FB, wherein: FA is the drive end area; FB is the output area; pa is driving pressure, driving medium is introduced into a cavity connected with a large piston due to the difference of piston areas at two ends of a piston rod of the gas booster pump 1, and the piston can reciprocate by alternately using two control valves for sucking and discharging compressed medium. During the reciprocating motion of the piston, the small piston end generates high-pressure gas according to the stress balance.
The system can provide accurate air source pressure for the air tightness detection of various valves, detect the overall leakage rate of the detected product, and simultaneously use a leakage point detection system to search the leakage point of the detected product, so that the air tightness test of a safety valve, an overflow valve, a split overflow valve, an isolation valve, a redundant electric explosion valve, a supercharging one-way valve and a pressure measurement one-way valve can be satisfied.
The driving gas input port 4 and the air input port 7 adopt helium or compressed air as media, a high-precision pressure source is provided for the workpiece airtight test, and after the air booster pump 1 is used for boosting according to the airtight requirements of different valves, the pressure is regulated to the pressure required by the test through the first pneumatic control pressure reducing valve 15 and the second pneumatic control pressure reducing valve 41. The second air input port 10 uses compressed air as a medium to provide a pressure source for the operation of the workpiece valve, and the pressure is adjusted to the pressure required by the test by manually adjusting the pressure reducing valve 30.
The leak detector 39 is a helium mass spectrometer leak detector, can detect the leak rate of products, the leak detector 39, the gas booster pump 1 and the like are integrated into a movable skid-mounted trolley, and can be moved at will; the high-low temperature environment boxes are placed independently, and the vacuum test cabin is placed inside the high-low temperature environment boxes to provide high-low temperature for valve tests.
Leak detector 39 is a helium mass spectrometer leak detector with the following specific performance parameters:
The minimum leak detection rate of the helium mass spectrometer leak detector equipment is less than 5 multiplied by 10 < -13 > Pa.m3/s; the minimum leak detection rate in the suction gun mode is less than 5 multiplied by 10 < -9 > Pa.m3/s; the leak detection port pressure is 40 Pa; response time, less than 1s in the suction gun mode and less than 0.3s in the vacuum mode; the inlet helium pumping speed is greater than 2.5L/S; the ion source is a2 filament; the starting time is less than 3min; the leak detector front-stage mechanical pump adopts an oil-free mechanical pump, and the pumping speed is high: 14.5m3/h
In the description of the present invention, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and defined otherwise, for example, it may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
It is noted that in this document, relational terms such as "means" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.