Test system and method for pressure regulating valve of complex gas pipeline

Abstract

The invention relates to the technical field of pipeline testing, in particular to a testing system and method for a pressure regulating valve of a complex gas pipeline, and the system comprises a plurality of gas pipelines, a gas supply module, a gas extraction module and a main control module. The plurality of gas pipelines are respectively provided with a to-be-tested piece, and the to-be-tested pieces comprise a common pressure regulating valve and a vacuum pressure regulating valve; two sides of each pressure regulating valve are connected with an air valve and are respectively connected with an air supply module and an air exhaust module; the gas supply module supplies gas to the gas pipeline, and the gas extraction module extracts gas from the gas pipeline; the master control module is electrically connected with all the air valves and controls the opening and closing states of the air valves on the two sides of the to-be-tested pieces, and corresponding performance testing of different to-be-tested pieces is achieved. The testing system is simple in structure, convenient to build and high in testing efficiency, and the testing method can be used for testing the pressure reduction performance of a common pressure regulating valve and can also be used for testing the negative pressure performance of a vacuum pressure regulating valve.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline testing, and more particularly to a testing system and method for a pressure regulating valve of a complex gas pipeline. Background Art

[0002] At present, semiconductor processes have extremely high requirements for gas purity and pressure control. As a pressure regulating component, the pressure regulating valve is particularly important in selection and application. Each pressure regulating valve is precisely selected and configured according to the characteristics of the specific pipeline to ensure the stability and accuracy of the gas during transmission.

[0003] However, in the past, gas pipeline testing often required different test systems because different pipelines may carry different types of gases with different pressure levels, and the connection and regulation methods between the pipelines are also different. Even for the same pressure reducing valve, different test platforms need to be built due to different test items. Building these test platforms is not only time-consuming, but also the reuse rate of the tooling used for construction is low. Finally, because there are many tooling parts, it is easy to have poor sealing or end face damage during repeated disassembly and assembly, which ultimately leads to frequent declines in test quality.

[0004] Therefore, how to quickly design a system and method with good versatility, strong controllability, and diverse testing effects for the existing pressure reducing valve products and the given complex gas pipeline system, which can be used to test complex gas pipeline pressure regulating valves, is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0005] In view of this, the present invention provides a testing system and method for a complex gas pipeline pressure regulating valve, which can solve at least one technical problem in the background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solution.

[0007] In a first aspect, the present invention provides a test system for a pressure regulating valve of a complex gas pipeline, comprising: a plurality of gas pipelines, a gas supply module, a gas extraction module and a main control module;

[0008] Each of the plurality of gas pipelines is provided with a test piece, which is a pressure regulating valve, or may be some pressure regulating valve assemblies; the pressure regulating valve is an ordinary pressure regulating valve or a vacuum pressure regulating valve, and the pressure regulating valve assembly is an ordinary pressure regulating valve with a pressure gauge, a vacuum pressure regulating valve with a vacuum pressure gauge, etc.;

[0009] Each of the two sides of the test piece is connected to an air valve, wherein the air valve on one side is connected to the air supply module, and the air valve on the other side is connected to the air extraction module;

[0010] The gas supply module supplies gas to the gas pipeline where the common pressure regulating valve is located;

[0011] The air extraction module extracts air from the gas pipeline where the vacuum pressure reducing valve is located;

[0012] The gas supply module supplies gas to the gas pipeline, and the gas extraction module extracts gas from the gas pipeline;

[0013] The main control module is electrically connected to all the gas valves and is used to control the opening and closing states of the gas valves on both sides of the test piece to achieve a decompression performance test or a negative pressure performance test on the test piece;

[0014] Among them, a unified pressure reduction performance test is performed on all the parts to be tested including ordinary pressure regulating valves, and a unified negative pressure performance test is performed on all the parts to be tested including vacuum pressure regulating valves.

[0015] It can be seen from the above technical solutions that the test system for complex gas pipeline pressure regulating valves disclosed in the present invention has the following beneficial effects compared with the prior art:

[0016] (1) The entire test system is designed in a modular manner with a simple structure, which facilitates quick construction of the system. If a problem occurs in some modules, they can be easily disassembled and repaired or replaced. During disassembly and assembly, the end faces are not easily damaged, which will not cause problems such as poor sealing. Therefore, the test system finally constructed can realize the corresponding performance testing of multiple test pieces in complex gas pipelines.

[0017] (2) All the test pieces are connected to a gas valve on both sides, and all the gas valves are integrated and controlled on the main control module. Therefore, the main control module can integrate and control the opening and closing status of multiple gas valves on both sides as needed, and cooperate with the gas supply module or the gas extraction module to complete the unified performance test of all the test pieces, thereby improving the overall test efficiency of the test system.

[0018] Furthermore, the main control module includes a main controller and a valve island, and the main controller performs integrated control on the opening and closing states of the gas valves on both sides of the test piece through the valve island.

[0019] Furthermore, the multiple gas pipelines are respectively connected to the air extraction module and the air supply module through at least two integrated air path rakes.

[0020] Furthermore, the integrated air path rake is an integrated structure.

[0021] Furthermore, the integrated air path rake is a split structure.

[0022] Furthermore, the integrated gas path nail rake comprises: a main gas path, a plurality of branch gas paths and a connecting gas path, wherein the main gas path and the plurality of branch gas paths are on both sides of the connecting gas path, and the connecting gas path connects the main gas path and the plurality of branch gas paths;

[0023] The main gas path is used to connect the gas supply module or the gas extraction module;

[0024] The branch gas line is used to connect the end of the gas valve on a single gas pipeline away from the test piece.

[0025] The integrated gas path spike rake is a connection component of a "spike"-shaped multi-gas path interface, which facilitates the rapid connection of gas valves on multiple gas pipelines with the main valves on the exhaust module side and the gas supply module side, thereby improving the construction efficiency of the test system.

[0026] Furthermore, the multiple branch air circuits of the integrated air circuit rake are respectively sealedly connected to the air valves on one side of the multiple gas pipelines through an adapter, and the main air circuit of the integrated air circuit rake is sealedly connected to the main control valve on the air supply module side or the air extraction module side through an adapter; the branch air circuits of the two integrated air circuit rakes connected to the air supply module or the air extraction module are respectively connected to the main air circuit of one integrated air circuit rake, thereby doubling the total number of branch pipelines of the two.

[0027] The integrated gas circuit spike rake is sealedly connected to the gas valves on one side of the multiple gas pipelines through an adapter. The connection has good sealing effect, is convenient for disassembly and assembly, and is not easily damaged during disassembly, so that the tooling for constructing the test system can be reused, thereby ensuring that the test effect of the newly assembled test system is not easily affected by disassembly and assembly.

[0028] Furthermore, the main controller of the main control module performs integrated control over the opening and closing states of the corresponding main valves on the air supply module side or the air extraction module side through the valve island.

[0029] Furthermore, the gas supply module includes a gas source, which is connected to the main gas circuit of the integrated gas circuit rake through a main gas outlet valve. The gas source is used to provide gas to the gas pipeline, and the main gas outlet valve is used to control the opening and closing of the gas source on the gas supply module side when supplying gas to the gas pipeline.

[0030] Further, the gas supply module includes a gas source and a gas storage tank, the gas source is connected to the gas inlet of the gas storage tank through a gas inlet main valve; the gas outlet of the gas storage tank is connected to the multiple gas pipelines through a gas outlet main valve; the gas inlet main valve and the gas outlet main valve are electrically connected to the main control module;

[0031] The main air inlet valve is used to control the gas in the gas source to flow into the gas storage tank;

[0032] The main gas outlet valve is used to control the gas in the gas storage tank to flow to the multiple gas pipelines.

[0033] Furthermore, the air extraction module includes a vacuum pump, the air extraction port of the vacuum pump is connected to the multiple gas pipelines through an air extraction main valve, and the air extraction main valve is electrically connected to the main control module;

[0034] The vacuum pump evacuates the multiple gas pipelines;

[0035] The main exhaust valve performs on-off control for exhausting gas from the multiple gas pipelines.

[0036] The air inlet main valve, the air outlet main valve and the air extraction main valve can all be manually or electrically controlled to control the corresponding overall opening and closing states. When performing performance tests on all pressure regulating valves on multiple gas pipelines, in order to further improve the integrated control effect, the air outlet main valve and the air extraction main valve can be electrically connected to the valve island on the main control module, or the air inlet main valve can be electrically connected to the valve island on the main control module.

[0037] It can be seen from the above technical solutions that, compared with the prior art, the test system for complex gas pipeline pressure regulating valves disclosed in the present invention also has the following beneficial effects:

[0038] (3) In the test system constructed by the present invention, the main valves on the gas supply module side or the gas extraction module side are electrically connected to the valve island on the main control module, which can further improve the integrated control degree of the test system and is conducive to improving the performance test efficiency of all pressure regulating valves on complex gas pipelines.

[0039] (4) In view of the large demand for bronchial pipelines in complex gas pipelines, the present invention has come up with an integrated gas path spike rake with good scalability. That is, a main gas path of an integrated gas path spike rake is connected to the bronchial paths of two basic integrated gas path spike rakes to achieve an exponential expansion of the total number of bronchial pipelines. Therefore, the integrated gas path spike rake can adapt to pipeline systems of different specifications and layouts. With the close cooperation of pneumatic valves, the integrated gas path spike rake can not only simplify the pipeline connection process, but also significantly improve the compatibility and scalability of the system, so that the test method can easily cope with the challenges of various complex test scenarios.

[0040] In a second aspect, the present invention provides a test method for a complex gas pipeline pressure regulating valve, which is applicable to the test system as described above, and comprises the following steps:

[0041] S1. Count the types of pressure regulating valves in all the tested parts on the complex gas pipeline to be tested, and determine the number of common pressure regulating valves and vacuum pressure regulating valves and their gas pipeline locations;

[0042] S2, the main control module determines whether the number of common pressure regulating valves is greater than 0 according to the statistical results of S1. If the number of common pressure regulating valves is greater than 0, proceed to step S3; if the number of common pressure regulating valves is equal to 0, directly jump to step S6;

[0043] S3, the main control module controls all the gas valves connected to the common pressure regulating valve on the gas supply module side to open, and controls all the gas valves on the gas extraction module side to close;

[0044] S4. Start the gas source of the gas supply module, and the main control module controls the main air inlet valve and the main air outlet valve to open, and perform a pressure reduction performance test on all common pressure regulating valves;

[0045] S5. After the pressure reducing performance test of all common pressure regulating valves is completed, the gas source of the gas supply module is turned off, and the main control module controls the main air inlet valve and the main air outlet valve to be closed;

[0046] S6, the main control module determines whether the number of vacuum air pressure valves is greater than 0. If so, proceed to step S7; if the number of vacuum air pressure valves is equal to 0, directly jump to step S10;

[0047] S7, the main control module controls all the air valves on the air supply module side to close, and controls all the air valves connected to the vacuum pressure reducing valve on the air extraction module side to open;

[0048] S8, start the vacuum pump of the exhaust module, the main control module controls the exhaust main valve to open, and conduct negative pressure performance test on all vacuum air pressure relief valves;

[0049] S9. After the negative pressure performance test of all vacuum air-pressure valves is completed, the vacuum pump of the exhaust module is turned off, and the main control module controls the exhaust main valve to be closed;

[0050] S10. Replace other complex gas pipelines and repeat S1-S9 until the performance tests of all the parts to be tested on all the complex gas pipelines to be tested are completed.

[0051] Compared with the prior art, the above test method has the following beneficial effects:

[0052] The testing method of the present invention can not only quickly test the performance of all the test pieces on a complex gas pipeline, but also can quickly test the performance of all the test pieces on multiple complex gas pipelines. The testing method has good versatility and high testing efficiency.

[0053] The testing method of the present invention provides an efficient and reliable solution for various testing tasks with its modular control, precise gas path management, strong flexibility and wide adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0055] Figure 1 It is a structural schematic diagram of a complex gas pipeline pressure regulating valve testing system of the present invention;

[0056] Figure 2 It is a structural schematic diagram of the integrated gas path spike rake split design in the complex gas pipeline pressure regulating valve test system;

[0057] Figure 3 A flow chart of a simplified method for performing a unified performance test on all test pieces on a complex gas pipeline according to the present invention;

[0058] Figure 4 This is a flow chart of a specific method for performing unified performance testing on all test pieces on multiple complex gas pipelines according to the present invention. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] The present invention discloses a test system for a pressure regulating valve in a complex gas pipeline, such as Figure 1 As shown, it includes: multiple gas pipelines, a gas supply module, a gas extraction module and a main control module. A test piece is set on each of the multiple gas pipelines. The test pieces are represented by R1~Rn respectively. The test piece is a pressure regulating valve, and the pressure regulating valve is a common pressure regulating valve or a vacuum pressure regulating valve;

[0061] Each test piece is connected to a gas valve on both sides. The gas valves on the left are PV1~PVn, and the gas valves on the right are PV11~PVnn. All the gas valves on the left are connected to the gas supply module through an integrated gas path rake, and all the gas valves on the right are connected to the gas extraction module through another integrated gas path rake.

[0062] Among them, the gas supply module supplies gas to the gas pipeline, providing a unified test environment for the pressure reduction performance test of all common pressure regulating valves to be tested;

[0063] The vacuum module evacuates gas from the gas pipeline and provides a unified vacuum test environment for negative pressure performance testing of all vacuum pressure control valves under test.

[0064] In this embodiment, the gas supply module includes a gas source and a gas storage tank. The gas source is connected to the gas inlet of the gas storage tank through a main gas inlet valve. The gas outlet of the gas storage tank is sealed with the main gas circuit of an integrated gas circuit rake through a main gas outlet valve. The main gas inlet valve is used to control the gas in the gas source to flow into the gas storage tank, and the main gas outlet valve is used to control the gas in the gas storage tank to flow to multiple gas pipelines.

[0065] In other embodiments, only a gas source may be included, which is connected to the main gas path 1 of the integrated gas path rake through a main gas outlet valve. The gas source is used to provide gas to the gas pipeline, and the main gas outlet valve is used to control the opening and closing of the gas source on the gas supply module side when supplying gas to the gas pipeline.

[0066] Specifically, the air extraction module includes a vacuum pump, the air extraction port of the vacuum pump is sealedly connected to the main air path of another integrated air path rake through an air extraction main valve, and the air extraction main valve is used to control the vacuum pump to perform on-off control on the multiple gas pipelines;

[0067] The main air intake valve, the main air outlet valve and the main air extraction valve can all be controlled on and off manually or electrically. In the present embodiment, as a preference, the main air intake valve, the main air outlet valve and the main air extraction valve can all be electrically connected to the main control module in order to achieve a better integrated control effect.

[0068] The main control module includes a main controller and a valve island. The main controller integrates the control of the opening and closing status of all the gas valves on both sides of the test piece through the valve island, and can also integrate the control of the opening and closing status of the air supply module or the air extraction module. The specific connection method is: electrically connect the valve island with all the gas valves, the main air inlet valve, the main air outlet valve and the main air extraction valve; finally, the main controller of the main control module realizes integrated control of the opening and closing status of all the gas valves, the air supply module and the air extraction module through the valve island.

[0069] In other embodiments, only two main air outlet valves and two main air extraction valves may be provided, and the two valves are electrically connected to the valve island in the main control module.

[0070] exist Figure 1 The integrated air path rake is an integrated structure design. Figure 2 In the figure, the integrated air path spike rake has a split structure design, and the integrated air path spike rake includes: a main air path 1, multiple branch air paths 3 and a connecting air path 2. The main air path 1 and the multiple branch air paths 3 are on both sides of the connecting air path 2, and the connecting air path 2 connects the main air path 1 and the multiple branch air paths 3.

[0071] Regardless of the structural design of the integrated gas circuit spike rake, the total number of its branch gas circuits can be directly expanded to meet the needs of pipeline connection during actual complex gas pipeline testing. The specific means is: two integrated gas circuit spike rakes are used as the expansion basis, and their multiple branch gas circuits 3 are respectively sealed and connected to the main gas circuit 1 of an integrated gas circuit spike rake. Finally, the two expanded integrated gas circuit spike rakes have a total number of branch gas circuits 3 that is doubled, meeting the needs of various complex gas pipeline pressure regulating valve testing.

[0072] exist Figure 2 In the figure, the connecting gas circuit 2 is composed of multiple connecting pipes; one end of the branch gas circuit 3 is connected to the connecting pipe, and the other end is connected to the gas valve; the multiple branch gas circuits 3 are sealed and connected to the multiple gas valves on the multiple gas pipelines through an adapter 4; the main gas circuit 1 is also sealed and connected to the control main valve on the gas supply module side or the gas extraction module side through the adapter 4.

[0073] Figure 2 The integrated air path spike rake structure also has the following characteristics: multiple branch air paths 3 are parallel to each other, the main air path 1 and the straight lines where the multiple branch air paths 3 are located are parallel, the main air path 1 and the multiple branch air paths 3 are perpendicular to the connecting air path 2, and the main air path 1 and one of the branch air paths 3 are on the same straight line.

[0074] In other embodiments, the structure of the integrated air path rake may have only part of the above-mentioned structural features, or some structural features may be slightly adjusted.

[0075] In some embodiments, an expandable integrated airway rake may be composed of twenty to thirty integrated airway rakes.

[0076] In other embodiments, the part to be tested may be a pressure regulating valve assembly to be tested consisting of an ordinary pressure regulating valve or a vacuum pressure regulating valve and other devices, such as an ordinary pressure regulating valve with a pressure gauge, a vacuum pressure regulating valve with a vacuum pressure gauge, etc. The above-mentioned test system and test method for complex gas pipeline pressure regulating valves are also applicable to the unified performance test of the pressure regulating valve assembly to be tested.

[0077] In one embodiment, the present invention provides a testing method for a testing system of the above-mentioned complex gas pipeline pressure regulating valve, such as Figure 3 As shown, the following steps are included:

[0078] (1) Count the types of pressure regulating valves in all the test pieces on multiple gas pipelines, and determine the number of common pressure regulating valves and vacuum pressure regulating valves and their gas pipeline locations;

[0079] (2) The main control module controls all the gas valves on the gas supply module side and connected to the common pressure regulating valve to open, controls all the gas valves on the gas extraction module side to close, starts the gas supply module, and performs a pressure reduction performance test on all the common pressure regulating valves;

[0080] (3) The main control module controls all air valves on the air supply module side to close, controls all air valves on the air extraction module side and connected to the vacuum pressure relief valve to open, starts the air extraction module, and performs negative pressure performance tests on all vacuum pressure relief valves.

[0081] For a given complex gas pipeline, at least two integrated gas pipeline spike rakes are used to achieve sealed connection between the gas valves on both sides of all gas pipelines and the gas extraction module and the gas supply module respectively, and the types of pressure regulating valves in all the test pieces on all gas pipelines are counted in advance to determine the number of vacuum pressure regulating valves and ordinary pressure regulating valves and the gas pipeline positions where they are located; if the statistics show that two types of pressure regulating valves are included, the main control module uses step (2) to complete the pressure reduction performance test of all ordinary pressure regulating valves on multiple gas pipelines, and uses step (3) to complete the negative pressure performance test of all vacuum pressure regulating valves on multiple gas pipelines; if all the test pieces are the same type of pressure regulating valves, the main control module only needs to complete the performance test of all the test pieces in one step according to step (2) or step (3). Therefore, the test method can uniformly test the performance of all the test pieces on the complex gas pipeline, and its test efficiency is very high.

[0082] The following is an explanation of the above test process. The specific test process is as follows: Figure 4 As shown, the following steps are included:

[0083] S1. Count the types of pressure regulating valves in all the tested parts on the complex gas pipeline to be tested, and determine the number of common pressure regulating valves and vacuum pressure regulating valves and their gas pipeline locations;

[0084] S2, the main control module determines whether the number of common pressure regulating valves is greater than 0 according to the statistical results of S1. If so, it enters S3 in sequence; if not, it jumps directly to S6;

[0085] S3, the main control module controls all the gas valves connected to the common pressure regulating valve on the gas supply module side to open, and controls all the gas valves on the gas extraction module side to close;

[0086] S4. Start the air supply module, and the main control module controls the main air inlet valve and the main air outlet valve to open, and perform a pressure reduction performance test on all common pressure regulating valves;

[0087] S5. After the pressure reducing performance test of all common pressure regulating valves is completed, the air supply module is turned off, and the main control module controls the main air inlet valve and the main air outlet valve to be closed;

[0088] S6, the main control module determines whether the number of vacuum pressure relief valves is greater than 0, if so, it goes to S7 in sequence; if not, it jumps directly to S10;

[0089] S7, the main control module controls all the air valves on the air supply module side to close, and controls all the air valves connected to the vacuum pressure reducing valve on the air extraction module side to open;

[0090] S8, start the air extraction module, the main control module controls the main air extraction valve to open, and conducts negative pressure performance test on all vacuum pressure relief valves;

[0091] S9. After the negative pressure performance test of all vacuum pressure relief valves is completed, the air extraction module is closed, and the main control module controls the main air extraction valve to be closed;

[0092] S10, replace other complex gas pipelines to be tested, and repeat S1-S9 until the performance tests of all the components to be tested on all the complex gas pipelines to be tested are completed.

[0093] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0094] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A test system for a pressure regulating valve in a complex gas pipeline, characterized in that: include: Multiple gas pipelines, gas supply modules, gas extraction modules and main control modules; Each of the plurality of gas pipelines is provided with a test piece, the test piece is a pressure regulating valve, and the pressure regulating valve is a common pressure regulating valve or a vacuum pressure regulating valve; The two sides of the test piece are respectively connected to an air valve, wherein the air valve on one side is connected to the air supply module, and the air valve on the other side is connected to the air extraction module; The gas supply module supplies gas to the gas pipeline, and the gas extraction module extracts gas from the gas pipeline; The main control module is electrically connected to all the gas valves and is used to control the opening and closing states of the gas valves on both sides of the test piece to achieve a decompression performance test or a negative pressure performance test on the test piece; Among them, a unified pressure reduction performance test is performed on all the parts to be tested including ordinary pressure regulating valves, and a unified negative pressure performance test is performed on all the parts to be tested including vacuum pressure regulating valves.

2. The test system for complex gas pipeline pressure regulating valve according to claim 1, characterized in that: The main control module includes a main controller and a valve island. The main controller performs integrated control on the opening and closing states of the gas valves on both sides of the test piece through the valve island.

3. The test system for complex gas pipeline pressure regulating valve according to claim 1, characterized in that: The multiple gas pipelines are respectively connected to the air extraction module and the air supply module through at least two integrated air path rakes.

4. The test system for complex gas pipeline pressure regulating valve according to claim 3, characterized in that: The comprehensive air path rake is an integrated structure.

5. The test system for complex gas pipeline pressure regulating valve according to claim 3, characterized in that: The integrated gas path nail rake is a split structure, including: a main gas path, multiple branch gas paths and a connecting gas path, the main gas path and the multiple branch gas paths are on both sides of the connecting gas path, and the connecting gas path connects the main gas path and the multiple branch gas paths; The main gas path is used to connect the gas supply module or the gas extraction module; The branch gas path is used to connect the gas valve on a single gas pipeline or to connect the main gas path of other integrated gas path rakes.

6. The test system for complex gas pipeline pressure regulating valve according to claim 3, characterized in that: The multiple branch air circuits of the integrated air circuit rake are sealedly connected to the air valves on one side of the multiple gas pipelines through an adapter respectively, and the main air circuit of the integrated air circuit rake is sealedly connected to the main control valve on the air supply module side or the air extraction module side through an adapter; the branch air circuits of the two integrated air circuit rakes connected to the air supply module or the air extraction module are respectively connected to the main air circuit of one integrated air circuit rake, thereby doubling the total number of branch pipelines of the two.

7. The test system for complex gas pipeline pressure regulating valve according to claim 1, characterized in that: The gas supply module includes a gas source and a gas tank, wherein the gas source is connected to the gas inlet of the gas tank through a gas inlet main valve; the gas outlet of the gas tank is connected to the multiple gas pipelines through a gas outlet main valve; the gas inlet main valve and the gas outlet main valve are electrically connected to the main control module; The main air inlet valve is used to control the gas in the gas source to flow into the gas storage tank; The main gas outlet valve is used to control the gas in the gas storage tank to flow to the multiple gas pipelines.

8. The test system for complex gas pipeline pressure regulating valve according to claim 1, characterized in that: The air extraction module comprises a vacuum pump, the air extraction port of the vacuum pump is connected to the plurality of gas pipelines via an air extraction main valve, and the air extraction main valve is electrically connected to the main control module; The vacuum pump evacuates the multiple gas pipelines; The main exhaust valve performs on-off control for exhausting gas from the multiple gas pipelines.

9. The test system for complex gas pipeline pressure regulating valve according to claim 1, characterized in that: The main controller of the main control module performs integrated control on the opening and closing status of the main valve on the air supply module side or the air extraction module side through the valve island.

10. A testing method for a pressure regulating valve in a complex gas pipeline, characterized in that: It is applicable to a test system as claimed in any one of claims 1 to 9, comprising the following steps: S1. Count the types of pressure regulating valves in all the tested parts on the complex gas pipeline to be tested, and determine the number of common pressure regulating valves and vacuum pressure regulating valves and their gas pipeline locations; S2, the main control module determines whether the number of common pressure regulating valves is greater than 0 according to the statistical results of S1. If so, it enters S3 in sequence; if not, it directly jumps to S6; S3, the main control module controls all the gas valves connected to the common pressure regulating valve on the gas supply module side to open, and controls all the gas valves on the gas extraction module side to close; S4. Start the gas source of the gas supply module, and the main control module controls the main air inlet valve and the main air outlet valve to open, and perform a pressure reduction performance test on all common pressure regulating valves; S5. After the pressure reducing performance test of all common pressure regulating valves is completed, the gas source of the gas supply module is turned off, and the main control module controls the main air inlet valve and the main air outlet valve to be closed; S6, the main control module determines whether the number of vacuum pressure relief valves is greater than 0. If so, it goes to S7 in sequence; if not, it directly jumps to S10; S7, the main control module controls all the air valves on the air supply module side to close, and controls all the air valves connected to the vacuum pressure reducing valve on the air extraction module side to open; S8, start the vacuum pump of the exhaust module, the main control module controls the exhaust main valve to open, and conduct negative pressure performance test on all vacuum air pressure relief valves; S9. After the negative pressure performance test of all vacuum air-pressure valves is completed, the vacuum pump of the exhaust module is turned off, and the main control module controls the exhaust main valve to be closed; S10, replace other complex gas pipelines to be tested, and repeat S1-S9 until the performance tests of all the components to be tested on all the complex gas pipelines to be tested are completed.

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