Safety valve pilot valve debugging system based on semi-physical real-time simulation system

Abstract

The present application relates to a safety valve pilot valve debugging system based on a semi-physical real-time simulation system, a main valve virtual test system, which collects and obtains the pressure boundary conditions of the main valve inlet and back pressure cavity simulated by a physical test system to simulate the parameter state of the main valve virtual test system, a motor controller, which receives the calculated main valve opening and movement speed and drives a linear motor to drive a pneumatic cylinder to follow the simulation main valve opening in real time, and feedback the influence of the main valve opening on the back pressure cavity pressure, so as to realize the state coupling between the pilot valve physical test system and the main valve virtual test system, and achieve the purpose of testing the pilot valve debugging state based on the semi-physical real-time simulation system. The present application uses the main valve virtual test system to replace the traditional physical test system to test the pilot valve debugging state, which can greatly reduce the difficulty and cost of building a large flow gas supply system caused by using the main valve physical test system, and also improve the pilot valve debugging efficiency and batch quality stability and consistency.

Description

Technical Field

[0001] This invention relates to a pilot valve debugging system for a safety valve based on a semi-physical real-time simulation system, and particularly to a pilot valve debugging system for a pilot-operated safety valve in the gas circuit of a launch vehicle pressurization and delivery system based on a semi-physical real-time simulation system. Background Technology

[0002] Safety valves are crucial components of launch vehicle pressurization and delivery systems. Their function is to protect the pressure in propellant tanks, ensuring that the pressure in the gas cushion within the tank does not exceed the design operating pressure limit. Currently, the exhaust flow rate of pilot-operated safety valves in the gas circuit of launch vehicle pressurization and delivery systems is typically several hundred grams of helium per second, a significantly higher flow rate compared to general civilian products. Therefore, safety valve testing systems require high-pressure, large-capacity gas tanks and dedicated air compressor stations to meet ground testing coverage requirements. However, the construction costs of high-pressure, large-capacity gas tanks and dedicated air compressor stations are high, and their operation is inherently dangerous. Furthermore, with the increasing demand for high-density launches of domestic launch vehicles in recent years, the demand for various pilot-operated safety valves has been continuously increasing, severely impacting the efficiency of safety valve debugging and testing, as previously the method of using main valve testing systems for pilot valve performance debugging has become increasingly difficult. Finally, with the intensifying competition in low-cost commercial spaceflight, the need to develop new, efficient, and low-cost safety valve debugging systems is becoming increasingly urgent. Summary of the Invention

[0003] The purpose of this invention is to provide a safety valve pilot valve debugging system based on a semi-physical real-time simulation system. The system simulates the pressure boundary conditions of the main valve inlet and back pressure chamber through a physical pilot valve test system. A virtual main valve test system collects and acquires the simulated pressure boundary conditions of the main valve inlet and back pressure chamber in real time to simulate the state of various parameters in the virtual main valve test system. A motor controller receives the calculated main valve opening and movement speed and drives a linear motor to move a pneumatic cylinder to follow the simulated main valve opening in real time, providing feedback on the influence of the main valve opening on the back pressure chamber pressure. This achieves state coupling between the physical pilot valve test system and the virtual main valve test system, thus achieving the purpose of testing the pilot valve debugging state based on a semi-physical real-time simulation system.

[0004] The technical solution of this invention is:

[0005] A safety valve pilot valve debugging system based on a semi-physical real-time simulation system includes: a pilot valve physical test system, a real-time simulation target machine, and a coupling module;

[0006] The pilot valve physical test system includes: a first gas source, a gas distribution platform, a first sonic orifice plate, a first test container, and a pilot valve to be tested;

[0007] The gas source is connected to the gas distribution platform, and the gas supply port of the gas distribution platform is connected to the first test container through a pipeline. A sonic orifice plate is installed on the pipeline between the gas distribution platform and the first test container. The sonic orifice plate is used to control the gas flow rate.

[0008] The pilot valve to be tested has a three-way structure, and its three ports are: port A, port B, and port C. Port A is connected to the first test container, and port C is connected to the external environment.

[0009] The real-time simulation target machine is used to run the main valve virtual test system, which includes a second air source, a second sonic orifice plate, a second test container and a main valve connected in sequence.

[0010] The real-time simulation target machine collects the pressure of the first test container as the inlet pressure of the main valve in the main valve virtual test system. The real-time simulation target machine collects the pressure of the pneumatic cylinder air chamber as the back pressure chamber pressure of the main valve in the main valve virtual test system. Under the action of the main valve inlet pressure and the main valve back pressure chamber pressure, the real-time simulation target machine obtains the simulated displacement of the main valve and converts it into a digital signal and sends it to the coupling module.

[0011] The coupling module uses the change in gas volume within the pneumatic cylinder to simulate the change in volume of the main valve back pressure chamber under the action of the simulated displacement; the pneumatic cylinder is connected to interface B.

[0012] Preferably, the structural parameters, moving part friction, and damping characteristics of the second air source, second sonic orifice plate, second test container, and main valve in the main valve virtual test system are consistent with those of the actual product.

[0013] Preferably, it further includes: a second pressure sensor;

[0014] The second pressure sensor is connected to the air chamber of the pneumatic cylinder, and the real-time simulated target machine collects the pressure of the air chamber of the pneumatic cylinder through the second pressure sensor.

[0015] Preferably, it further includes: a first pressure sensor;

[0016] The first pressure sensor is connected to the first test container, and the real-time simulation target machine collects the pressure of the first test container through the first pressure sensor.

[0017] Preferably, during operation, after the pressure of the first test container reaches the first set value, interface B and interface C are connected, and interface A and interface C are connected to release pressure.

[0018] Preferably, during operation, after the pressure in the first test container is lower than the second set value, interface C is closed, and interfaces B and A are connected to increase the pressure.

[0019] Preferably, the coupling module includes: a pneumatic cylinder, a linear motor, and a motor controller;

[0020] The pneumatic cylinder, linear motor, and motor controller are connected in sequence.

[0021] The linear motor drives the pneumatic cylinder to move under the simulated displacement of the main valve output by the real-time simulation target machine. The change in gas volume in the pneumatic cylinder is used to simulate the change in volume of the back pressure chamber of the main valve.

[0022] Preferably: Adjust the volume of the first test container and the structural dimensions of the first sonic orifice plate so that the first air source starts supplying air to the first test container, and the time t is such that the interface B and interface C of the pilot valve to be tested are connected, and the interface A and interface C are connected. o This is equal to the time from when the second gas source starts supplying gas to the second test container until the main valve opens.

[0023] Preferably: Adjust the volume of the first test container and the structural dimensions of the first sonic orifice plate so that the pilot valve to be tested is connected at interface B and interface C and connected at interface A and interface C, until the pilot valve to be tested is disconnected at interface B and interface C, and connected at interface A and interface C for a time t. c It equals the time from when the main valve opens to when the main valve closes.

[0024] Preferably:

[0025]

[0026]

[0027] Where p1 is the gas supply pressure of the gas distribution platform, p0 is the initial pressure of the first test container, and M N Let q be the molar mass of the gas source, V be the volume of the first test container, and q be the volume of the gas source. m R is the mass flow rate of the gas flowing through the first sonic orifice plate. g Where p is the gas constant, T is the gas temperature before flowing through the first sonic orifice plate, p3 is the pressure of the first test container when the pilot valve to be tested is open, and p2 is the pressure of the first test container when the pilot valve to be tested is closed. This refers to the exhaust flow rate when the pilot valve to be tested is opened.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] The safety valve pilot valve debugging system based on a semi-physical real-time simulation system provided by this invention uses a virtual test system for the main valve to replace the traditional physical test system for testing the pilot valve debugging status. Therefore, it can greatly reduce the hardware dependence of high pressure, large volume air tank and dedicated air compressor station on the pilot valve debugging stage of the pilot safety valve for the air circuit of the launch vehicle pressurization and delivery system, improve the pilot valve debugging efficiency, reduce the construction cost of the test system and improve the safety of the test site environment. At the same time, using the safety valve pilot valve debugging system based on a semi-physical real-time simulation system provided by this invention, the pilot valve performance debugging and parameter matching can be completed in advance, so as to reduce the risk of performance deviation, flutter and other unqualified products in subsequent whole valve tests, and improve the batch quality stability and consistency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the safety valve pilot valve debugging system based on a semi-physical real-time simulation system of the present invention;

[0031] Figure 2 This is a schematic diagram of the main valve virtual test system of the present invention. Detailed Implementation

[0032] The safety valve pilot valve debugging system based on a semi-physical real-time simulation system of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the safety valve pilot valve debugging system based on the semi-physical real-time simulation system of the present invention. The system includes: a first air source 1, an air distribution platform 2, a first sonic orifice plate 3, a first test container 4, a pilot valve to be debugged 5, a pneumatic cylinder 6, a connector 7, a linear motor 8, a motor controller 9, a host computer 10, a real-time simulation target machine 11, a second pressure sensor 13, and a first pressure sensor 14.

[0034] The pilot valve physical test system includes: a first air source 1, an air distribution platform 2, a first sonic orifice plate 3, a first test container 4, a pilot valve to be tested 5, and a pneumatic cylinder 6;

[0035] Gas source 1 is connected to gas distribution platform 2. The gas supply port of gas distribution platform 2 is connected to the first test container 4 via a pipeline. A sonic orifice plate 3 is installed on the pipeline between gas distribution platform 2 and the first test container 4. The sonic orifice plate 3 is used to control the gas flow rate. The pressure measuring port of gas distribution platform 2 is connected to the first test container 4.

[0036] The interface A of the pilot valve 5 to be tested is connected to the first test container 4, the interface B of the pilot valve 5 to be tested is connected to the air chamber of the pneumatic cylinder 6, and the interface C of the pilot valve 5 to be tested is connected to the external environment.

[0037] During the commissioning of the system, after the pressure in the first test container 4 reaches the first set value, interfaces B and C are connected, and interfaces A and C are also connected to release pressure. After the pressure in the first test container 4 falls below the second set value, interface C closes, and interfaces B and A become conductive.

[0038] The real-time simulation target machine 11 is used to run the main valve virtual test system, which includes a second air source 15, a second sonic orifice plate 16, a second test container 17, and a main valve 18 connected in sequence. The main valve virtual test system is a real-time simulation model 12 of the main valve established based on the structural parameters, moving part friction, and damping characteristics of the second air source 15, second sonic orifice plate 16, second test container 17, and main valve 18 used in actual tests of the pilot-operated safety valve. The real-time simulation model 12 runs in the real-time simulation target machine 11. The structural parameters, moving part friction, and damping characteristics of the second air source 15, second sonic orifice plate 16, second test container 17, and main valve 18 in the main valve virtual test system are consistent with the actual product.

[0039] The pneumatic cylinder 6, connector 7, linear motor 8, and motor controller 9 form a coupling module.

[0040] The real-time simulation target machine 11 collects the pressure of the first test container 4 through the first pressure sensor 14, which serves as the inlet pressure of the main valve 18 in the main valve virtual test system. The real-time simulation target machine 11 collects the pressure of the air chamber of the pneumatic cylinder 6 through the second pressure sensor 13, which serves as the back pressure chamber pressure of the main valve 18 in the main valve virtual test system. Under the action of the inlet pressure and the back pressure chamber pressure of the main valve 18, the real-time simulation target machine 11 obtains the displacement of the main valve 18 and converts it into a digital signal to be sent to the motor controller 9.

[0041] The first pressure sensor 14 is connected to the first test container 4, and the second pressure sensor 13 is connected to the air chamber of the pneumatic cylinder 6. The first pressure sensor 14 and the second pressure sensor 13 are electrically connected to the AI ​​channel of the data acquisition card. The real-time simulation model 12 of the main valve acquires the data from the first pressure sensor 14 and the second pressure sensor 13 through the AI ​​channel of the data acquisition card and assigns them to the main valve inlet pressure and back pressure chamber pressure in the real-time simulation model 12 of the main valve, respectively. The real-time simulation model 12 of the main valve simulates and calculates the main valve opening, movement speed, and exhaust flow rate of the main valve 18 according to the pressure boundary conditions. and the pressure of the second test vessel 17;

[0042] Pneumatic cylinder 6 is mechanically connected to linear motor 8 via connector 7. Pneumatic cylinder 6 is used to simulate the volume of the back pressure chamber of main valve 18. Motor controller 9 is electrically connected to the data acquisition card AO channel and linear motor 8. The opening degree and movement speed of main valve 18 calculated by the real-time simulation model 12 are transmitted to motor controller 9 through the data acquisition card AO channel to control the displacement of linear motor 8, thereby enabling pneumatic cylinder 6 to follow the main valve opening degree in the real-time simulation model 12 and feedback the influence of the main valve opening degree on the back pressure chamber pressure, thus realizing the state coupling between the pilot valve physical test system and the main valve virtual test system. The open or closed state of the pilot valve 5 to be debugged and the main valve opening degree in the real-time simulation model 12 of the main valve, which is followed by pneumatic cylinder 6 in real time, work together to determine the air chamber pressure of pneumatic cylinder 6. The output of the main valve virtual test system and the on / off state of interface B work together to determine the air chamber pressure of pneumatic cylinder 6.

[0043] The host computer 10 is electrically connected to the real-time simulation target machine 11, controls the start and stop of the real-time simulation model of the main valve, and receives and stores the real-time simulation target machine data in real time during the test, including the pressure of the first test container 4, the air chamber pressure of the pneumatic cylinder 6, the opening degree and movement speed of the main valve 18, and the pressure of the second test container 17.

[0044] This invention completes the construction and commissioning of a safety valve pilot valve commissioning system based on a semi-physical real-time simulation system according to the following steps:

[0045] 1) Establish a real-time simulation model of the main valve;

[0046] 11) such as Figure 2 As shown, based on the structural parameters of the second air source 15, the second sonic orifice plate 16, the second test container 17 and the main valve 18 used in the actual test of the pilot-operated safety valve, the friction force of the moving parts and the damping characteristics, an offline simulation model of the main valve virtual test system is established on the AMESim simulation platform.

[0047] 12) Complete the real-time processing of the offline simulation model of the main valve virtual test system with a running step size of 1ms as the target;

[0048] 13) Set the necessary external parameters (for adjusting the parameters of the real-time simulation model, such as the pressure of the second air source 15, the size and flow coefficient of the second sonic orifice plate 16, the volume and temperature of the second test container 17, etc.) and observed variables (simulation data sent by the real-time model to the host computer 10, such as the pressure of the second test container 17, the air chamber pressure of the pneumatic cylinder 6, the opening degree of the main valve 18, etc.) for the real-time simulation model.

[0049] 14) Set the interaction data between the real-time simulation model and the physical test system (pressure of the first pressure sensor 14, pressure of the second pressure sensor 13, and opening of the main valve 18), and select Veristand as the data interaction interface;

[0050] 15) Use AMESim to export real-time simulation code based on the NI Veristand platform;

[0051] 2) The gas supply pressure of the gas distribution platform 2 in the physical test system is equal to the pressure of the second gas source 15 in the real-time simulation model of the main valve. Calculate and adjust the size of the first sonic orifice plate 3 and the volume of the first test container 4 so that the duration from the start of gas supply to the opening of the pilot valve and the duration from the opening to the closing of the pilot valve are the same as the duration from the start of gas supply to the opening of the pilot valve and the duration from the opening to the closing of the pilot valve in the actual test of the whole valve.

[0052] The first gas source 1 begins supplying gas to the first test container 4, and the test valve 5 is opened for a duration t. o Satisfying the formula:

[0053]

[0054] In the formula: p1 is the gas supply pressure of the gas distribution platform 2 in the physical test system, p0 is the initial pressure of the first test container 4, and M N q represents the molar mass of the gas source, V is the volume of the first experimental container 4, and q is the volume of the gas source. m R is the mass flow rate of the gas flowing through the first sonic orifice plate 3. g Let T be the gas constant, and T be the gas temperature before flowing through the first sonic orifice plate 3. Adjust the volume of the first test container 4 and the structural dimensions of the first sonic orifice plate 3 so that the time when the first gas source 1 starts supplying gas to the first test container 4 and the interface B and interface C of the pilot valve 5 to be tested are connected, and the time when the interface A and interface C are connected, is equal to the time when the second gas source 15 starts supplying gas to the second test container 17 and the main valve 18 opens.

[0055] The duration from the opening to the closing of the pilot valve 5 to be tested satisfies the formula:

[0056]

[0057] In the formula: t c p3 represents the duration from opening to closing of the pilot valve 5 to be tested; p2 represents the pressure in the first test container 4 when the pilot valve 5 is open; and p3 represents the pressure in the first test container 4 when the pilot valve is closed. The exhaust flow rate is when the pilot valve 5 to be tested is opened. Adjust the volume of the first test container 4 and the structural dimensions of the first sonic orifice plate 3 so that the interfaces B and C of the pilot valve 5 to be tested are connected and the interfaces A and C are connected, until the interfaces B and C of the pilot valve 5 to be tested are disconnected and the interfaces A and C are disconnected, and the time for the interfaces A and B to be connected is equal to the time from the opening time of the main valve 18 to the closing time of the main valve 18.

[0058] When the pressure of the first test container 4 drops below the set pressure, the ports B and C of the pilot valve 5 to be tested are disconnected, and ports A and C are also disconnected.

[0059] By combining formulas (1) and (2), adjusting the volume of the first test container 4, and adjusting the first sonic orifice plate 3, t c The pressures in the first test container 4 and the second test container 17 are synchronized, and the design requirements are met.

[0060] 3) Build a pilot-operated safety valve commissioning system based on a semi-physical real-time simulation system;

[0061] 31) According to Figure 1 The diagram shows the hardware connection for the pilot-operated safety valve debugging system based on a semi-physical real-time simulation system.

[0062] 32) On the host computer 10, use the NI Veristand platform to download the real-time simulation model of the main valve to the real-time simulation target computer 11, and complete the startup configuration of the real-time simulation target computer, complete the configuration of the model external parameters and observation variables, and complete the interactive parameter mapping configuration between the real-time simulation model of the main valve and the pilot valve physical test system.

[0063] 33) Use the NI Veristand platform on the host computer 10 to complete the data channel settings that need to be stored; during the real-time simulation, the NI Veristand platform will automatically receive the data sent by the real-time simulation model of the main valve and store it in the corresponding path of the Veristand project folder.

[0064] 4) Start the real-time simulation model 12 of the main valve in the target machine 11 on the host computer 10 using the NI Veristand platform. At the same time, supply gas to the first test container 4 through the gas distribution station 2 until the pilot valve completes a certain number of opening-closing cycles (usually 3 times, and the number can be increased as needed). Then stop the real-time simulation model of the main valve and stop the gas distribution station 2 from supplying gas to the first test container 4.

[0065] 5) Locate the test data for this debugging test in the corresponding path of the Veristand project folder corresponding to the real-time simulation model 12 of the main valve on the host computer 10. Use common data processing software (such as Matlab, Origin, etc.) to read the stored data, including the pressure of the first test container 4, the air chamber pressure of the pneumatic cylinder 6, the opening degree of the main valve 18, and the pressure of the second test container 17.

[0066] 51) When the pressure of the second test container 17 exceeds the opening pressure and closing pressure bandwidth required by the pilot-operated safety valve, the spring preload of the pilot valve 5 to be tested is adjusted and a semi-physical simulation test is repeated until the pressure of the second test container 17 meets the opening pressure and closing pressure bandwidth required by the valve.

[0067] 52) When the pilot valve 5 to be tested exhibits chattering, the pilot valve spring, the clearance of the moving parts, and the stroke of the moving parts need to be rematched to eliminate the chattering phenomenon.

[0068] 6) During the test, the peak pressure of the second test container 17 is the opening pressure of the entire pilot-operated safety valve, and the valley pressure of the second test container 17 is the closing pressure of the entire pilot-operated safety valve. When the opening and closing pressures of the main valve in the real-time simulation model of the main valve meet the opening and closing pressure bandwidth requirements of the entire pilot-operated safety valve, it indicates that the opening and closing performance of the pilot valve to be tested meets the requirements. The opening and closing performance of the pilot valve 5 to be tested is evaluated by analyzing the opening degree of the main valve 18 and the pressure of the second test container 17 in the real-time simulation model of the main valve.

[0069] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make possible variations and modifications to the technical solutions of the present invention using the disclosed methods and techniques without departing from the spirit and scope of the invention. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the content of the technical solutions of the present invention, shall fall within the protection scope of the present invention. Where there is no conflict, the embodiments of this application and the technical features thereof can be combined with each other.

[0070] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A safety valve pilot valve debugging system based on a semi-physical real-time simulation system, characterized in that, include: Pilot valve physical test system, real-time simulation target machine (11) and coupling module; The pilot valve physical test system includes: a first gas source (1), a gas distribution platform (2), a first sonic orifice plate (3), a first test container (4), and a pilot valve to be tested (5); The first gas source (1) is connected to the gas distribution platform (2). The gas supply port of the gas distribution platform (2) is connected to the first test container (4) through a pipeline. A first sonic orifice plate (3) is installed on the pipeline between the gas distribution platform (2) and the first test container (4). The first sonic orifice plate (3) is used to control the gas flow rate. The pilot valve (5) to be tested has a three-way structure. The three ports of the pilot valve (5) to be tested are: port A, port B and port C. Port A is connected to the first test container (4) and port C is connected to the external environment. The real-time simulation target machine (11) is used to run the main valve virtual test system, which includes a second air source (15), a second sonic orifice plate (16), a second test container (17), and a main valve (18) connected in sequence. The real-time simulation target machine (11) collects the pressure of the first test container (4) as the inlet pressure of the main valve (18) in the main valve virtual test system. The real-time simulation target machine (11) collects the pressure of the air chamber of the pneumatic cylinder (6) as the back pressure chamber pressure of the main valve (18) in the main valve virtual test system. Under the action of the inlet pressure of the main valve (18) and the back pressure chamber pressure of the main valve (18), the real-time simulation target machine (11) obtains the simulated displacement of the main valve (18) and converts it into a digital signal to be sent to the coupling module. Under the action of simulated displacement, the coupling module uses the gas volume change in the pneumatic cylinder (6) to simulate the volume change of the back pressure chamber of the main valve (18); the pneumatic cylinder (6) is connected to interface B.

2. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to claim 1, characterized in that: The structural parameters, moving part friction and damping characteristics of the second air source (15), second sonic orifice plate (16), second test container (17) and main valve (18) in the main valve virtual test system are consistent with those of the actual product.

3. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to claim 1, characterized in that: Also includes: Second pressure sensor (13); The second pressure sensor (13) is connected to the air chamber of the pneumatic cylinder (6), and the real-time simulation target machine (11) collects the pressure of the air chamber of the pneumatic cylinder (6) through the second pressure sensor (13).

4. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to claim 1, characterized in that, Also includes: First pressure sensor (14); The first pressure sensor (14) is connected to the first test container (4), and the real-time simulation target machine (11) collects the pressure of the first test container (4) through the first pressure sensor (14).

5. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to claim 1, characterized in that: During operation, after the pressure in the first test container (4) reaches the first set value, interface B and interface C are connected, and interface A and interface C are connected to release pressure.

6. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to claim 1, characterized in that: During operation, after the pressure in the first test container (4) is lower than the second set value, interface C is closed, and interfaces B and A are connected to increase the pressure.

7. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to any one of claims 1 to 6, characterized in that: The coupling module includes: a pneumatic cylinder (6), a linear motor (8), and a motor controller (9); The pneumatic cylinder (6), the linear motor (8), and the motor controller (9) are connected in sequence; The linear motor (8) drives the pneumatic cylinder (6) to move under the simulated displacement of the main valve (18) output by the real-time simulation target machine (11), so that the change in gas volume in the pneumatic cylinder (6) simulates the change in volume of the back pressure chamber of the main valve (18).

8. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to any one of claims 1 to 6, characterized in that: Adjust the volume of the first test container (4) and the structural dimensions of the first sonic orifice plate (3) so that the first air source (1) starts supplying air to the first test container (4) and the interfaces B and C of the pilot valve (5) to be tested are connected, and the time when interfaces A and C are connected is adjusted. = The time when the second gas source (15) starts supplying gas to the second test container (17) until the main valve (18) opens.

9. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to claim 8, characterized in that: Adjust the volume of the first test container (4) and the structural dimensions of the first sonic orifice plate (3) so that interfaces B and C of the pilot valve (5) to be tested are connected and interfaces A and C are connected until interfaces B and C of the pilot valve (5) to be tested are disconnected and interfaces A and C are disconnected, and the time between the connection of interfaces A and B is also adjusted. = , which is equal to the time from when the main valve (18) opens to when the main valve (18) closes.

10. The safety valve pilot valve debugging system based on a semi-physical real-time simulation system according to claim 9, characterized in that: in, The gas supply pressure for the gas distribution station (2) is as follows: The initial pressure of the first test container (4) The molar mass of the gas source. The volume of the first test container (4) The mass flow rate of the gas flowing through the first sonic orifice plate (3) is... The gas constant is... The temperature of the gas flowing through the first sonic orifice plate (3); The pressure of the first test container (4) when the pilot valve (5) to be tested is opened. The pressure of the first test container (4) when the pilot valve (5) to be tested is closed. The exhaust flow rate is when the pilot valve (5) to be tested is opened.

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