Test system for verifying performance of deflation and pressurization system of gas cylinder

Abstract

The invention discloses a test system for verifying the performance of a gas cylinder deflation and pressurization system, and relates to the technical field of performance verification of gas cylinder deflation and pressurization systems, and the test system comprises a gas cylinder pressurization system, a ground pressurization system, a storage box, an exhaust safety system and a measurement control system. Wherein the gas cylinder pressurization system is communicated with the ground pressurization system and the storage tank; the gas cylinder pressurization system is used for simulating on-rocket pressurization; the ground pressurization system is also communicated with the storage tank; the ground pressurization system is used for simulating ground pressurization; the exhaust safety system is communicated with the storage tank; the exhaust safety system is used for releasing redundant gas; the measurement control system is communicated with the gas cylinder pressurization system and the storage tank; the measurement control system is used for controlling a test process and collecting temperature and pressure in the test process; wherein the test process at least comprises a gas cylinder deflation test and a gas cylinder pressurization system performance verification test. According to the invention, a gas cylinder deflation test can be realized, and a gas cylinder pressurization system performance verification test can also be realized.

Description

Technical Field

[0001] The present application relates to the technical field of performance verification of gas cylinder deflation and pressurization systems, and in particular to a test system for performance verification of gas cylinder deflation and pressurization systems. Background Art

[0002] The boosting system is used to provide the air cushion pressure of the liquid rocket propellant tank to meet the requirements of the propellant inlet working pressure and the internal pressure of the thin-walled structure of the rocket propellant tank required during engine startup and flight, and to ensure that the tank structure has sufficient strength and rigidity. Among them, gas cylinder boosting is a commonly used boosting method, which requires an independent gas storage boosting gas cylinder that stores the boosting medium. The boosting gas is allowed to enter the tank by controlling the gas cylinder discharge flow rate. After determining the boosting scheme, it is necessary to verify the performance parameters of the boosting system to confirm that the boosting gas flow rate, the number of gas cylinders, and the pressure can meet the tank boosting requirements. The gas cylinder is an important device used in liquid launch vehicles, and its main function is to provide the required gas source for the onboard system. During the use of the gas cylinder, one of the important contents that the system often needs to pay attention to and master during design is the temperature and pressure characteristics of the gas cylinder during the filling and discharging process. The volume, pressure, and temperature characteristics of the gas cylinder are directly related to the system boosting capacity, orifice size, and the number of solenoid valve actions. The main purpose of the gas cylinder deflation and pressurization system performance verification test is to obtain the pressure and temperature change rules of the gas cylinder during the deflation process, and to modify the gas cylinder deflation calculation model so that the system can match the reasonable gas cylinder volume and quantity under the premise of obtaining sufficient pressurization capacity, and realize the refined design of the pressurization system.

[0003] The cylinder deflation and pressurization system performance verification test simulates the working condition of the pressurization system during the rocket flight when the rocket engine is not ignited. During the rocket flight, due to the large propellant consumption flow of the engine, the tank pressure is relatively fast, the tank liquid level height continues to drop, and the temperature and pressure of the pressurized gas cylinder continue to drop. Therefore, this process is a process of coupled changes of multiple components and multiple parameters. When the engine is not ignited, it is difficult for traditional test systems to truly and comprehensively simulate this entire process, or only simulate part of it. Traditional test systems are too complicated. Since the rocket flight process involves the coordinated work of gases, propellants and electrical components, and the rocket tanks are generally large in size, if a true simulation is to be performed, the test system will be very complicated, or a larger test site will be required, which is difficult to achieve in general test sites. Figure 1As shown, the traditional test system includes: a gas filling hand valve SQ', a gas cylinder group, a temperature sensor T5' for collecting the temperature of the gas cylinder group, a temperature sensor T6', a temperature sensor T1', a pressure sensor P1', a filter, a solenoid valve, a temperature sensor T2', a pressure sensor P2', an orifice plate, a temperature sensor T7', a temperature sensor T3', a pressure sensor P3', a temperature sensor T4', a temperature sensor T8', a pressure sensor P4', a gas flow meter, a DN10' pipe and a DN20' pipe. The traditional test system can only verify the gas cylinder deflation performance, and cannot couple the gas cylinder deflation with the tank pressurization for synchronous verification. Summary of the invention

[0004] The purpose of the present application is to provide a test system for gas cylinder deflation and pressurization system performance verification, which can realize both gas cylinder deflation test and gas cylinder pressurization system performance verification test.

[0005] To achieve the above-mentioned purpose, the present application provides a test system for verifying the performance of a gas cylinder deflation and pressurization system, comprising: a gas cylinder pressurization system, a ground pressurization system, a storage tank, an exhaust safety system and a measurement and control system; wherein the gas cylinder pressurization system is connected to the ground pressurization system and the storage tank; the gas cylinder pressurization system is used to simulate pressurization on an arrow; the ground pressurization system is also connected to the storage tank; the ground pressurization system is used to simulate ground pressurization; the exhaust safety system is connected to the storage tank; the exhaust safety system is used to release excess gas; the measurement and control system is connected to the gas cylinder pressurization system and the storage tank; the measurement and control system is used to control the test process and collect the temperature and pressure during the test process; wherein the test process at least includes: a gas cylinder deflation test and a gas cylinder pressurization system performance verification test.

[0006] As above, wherein the gas cylinder pressurization system includes: a charging hand valve, a gas cylinder group, a first gas filter, a gas flow meter, a first boosting solenoid valve, a second boosting solenoid valve, a third boosting solenoid valve, a first boosting orifice plate, a second boosting orifice plate and a third boosting orifice plate; one end of the charging hand valve is connected to one end of the gas cylinder group through a pipeline; the other end of the gas cylinder group is connected to one end of the first gas filter through a pipeline; the other end of the first gas filter is connected to one end of the gas flow meter through a pipeline; one end of the first boosting solenoid valve, one end of the second boosting solenoid valve and the third boosting orifice plate are connected After one end of the three boost solenoid valves are interconnected through pipelines, they are also connected to the other end of the gas flowmeter through the pipeline; the other end of the first boost solenoid valve is connected to one end of the first boost orifice plate through a pipeline; the other end of the second boost solenoid valve is connected to one end of the second boost orifice plate through a pipeline; the other end of the third boost solenoid valve is connected to one end of the third boost orifice plate through a pipeline; after the other end of the first boost orifice plate, the other end of the second boost orifice plate and the other end of the third boost orifice plate are interconnected through pipelines, they are also connected to the storage tank and the ground boosting system through pipelines.

[0007] As above, a diffusion device is provided in the storage tank, and the other end of the first boost orifice plate, the other end of the second boost orifice plate and the other end of the third boost orifice plate are connected to each other through pipes, and are also connected to the diffusion device in the storage tank through pipes.

[0008] As above, wherein the ground boosting system includes: a first solenoid valve, a fourth boosting orifice plate, a second gas filter, a first one-way valve and a second one-way valve; one end of the first solenoid valve is connected to the ground gas source through a pipeline, and the other end of the first solenoid valve is connected to one end of the fourth boosting orifice plate through a pipeline; the other end of the fourth boosting orifice plate is connected to one end of the second gas filter through a pipeline; the other end of the second gas filter is connected to one end of the first one-way valve through a pipeline; the other end of the first one-way valve is connected to one end of the second one-way valve through a pipeline; the other end of the second one-way valve is connected to the storage tank, the other end of the first boosting orifice plate, the other end of the second boosting orifice plate and the other end of the third boosting orifice plate through a pipeline.

[0009] As above, wherein the other end of the second one-way valve is communicated with the diffusion device in the storage tank.

[0010] As above, wherein the exhaust insurance system comprises: an exhaust valve, an exhaust orifice plate, a second solenoid valve and a safety valve; the first end of the exhaust valve is connected to the tank through a pipeline; the second end of the exhaust valve is connected to one end of the exhaust orifice plate through a pipeline, and the other end of the exhaust orifice plate is exhausted through the pipeline; the third end of the exhaust valve is connected to one end of the second solenoid valve through a pipeline, and the other end of the second solenoid valve is connected to the ground control air through a pipeline; one end of the safety valve is connected to the tank through a pipeline, and the other end of the safety valve is connected to the second end of the exhaust valve and one end of the exhaust orifice plate through a pipeline.

[0011] As above, the measurement and control system includes: a temperature sensor, a pressure sensor and a test measurement and control system; wherein, the temperature sensor: is used to collect the temperature during the test, wherein the temperature during the test includes at least: the temperature before the boost orifice plate, the temperature after the boost orifice plate and the temperature at the outlet of the gas cylinder; the pressure sensor: is used to collect the pressure during the test, wherein the pressure during the test includes at least: the pressure before the boost orifice plate, the pressure after the boost orifice plate, the pressure at the outlet of the gas cylinder and the actual pressure of the tank; the test measurement and control system: is used to set a pressure control band for the boost solenoid valve, and control the opening and closing of the boost solenoid valve through the relationship between the corresponding pressure control band of the boost solenoid valve and the actual pressure of the tank; wherein, the pressure control band = [upper pressure limit, lower pressure limit]; the boost solenoid valve includes at least: a first boost solenoid valve, a second boost solenoid valve and a third boost solenoid valve; the pressure control band of the first boost solenoid valve, the pressure control band of the second boost solenoid valve and the pressure control band of the third boost solenoid valve are all different.

[0012] As above, wherein the temperature sensor at least includes: a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor and a fifth temperature sensor; wherein the first temperature sensor is arranged on a pipe between a gas flow meter and a pipe connecting one end of the first boost solenoid valve, one end of the second boost solenoid valve and one end of the third boost solenoid valve; the first temperature sensor is used to collect the temperature at the outlet of the gas cylinder; the second temperature sensor is arranged on a pipe between the other end of the first boost solenoid valve and the first boost orifice plate; the second temperature sensor is used to collect the temperature before the first boost orifice plate; the third temperature sensor is arranged at On the pipe between the other end of the second boost solenoid valve and the second boost orifice; the third temperature sensor is used to collect the temperature before the second boost orifice; the fourth temperature sensor is arranged on the pipe between the other end of the third boost solenoid valve and the third boost orifice; the fourth temperature sensor is used to collect the temperature before the third boost orifice; the fifth temperature sensor is arranged on the pipe between the pipe connecting the other end of the first boost orifice, the other end of the second boost orifice and the other end of the third boost orifice and the pipe connecting the second check valve and the tank; the fifth temperature sensor is used to collect the temperature after the first boost orifice, the second boost orifice and the third boost orifice.

[0013] As above, wherein the pressure sensor includes at least: a first pressure sensor, a second pressure sensor, a third pressure sensor, a fourth pressure sensor, a fifth pressure sensor, a sixth pressure sensor, a seventh pressure sensor and an eighth pressure sensor; wherein the first pressure sensor is arranged on a pipe between a gas flow meter and a pipe connecting one end of a first boost solenoid valve, one end of a second boost solenoid valve and one end of a third boost solenoid valve; the first pressure sensor is used to collect the pressure at the outlet of the gas cylinder; the second pressure sensor is arranged on a pipe between the other end of the first boost solenoid valve and the first boost orifice plate; the second pressure sensor is used to collect the pressure before the first boost orifice plate; the third pressure sensor is arranged on a pipe between the other end of the second boost solenoid valve and the second boost orifice plate The third pressure sensor is used to collect the pressure before the second boost orifice plate; the fourth pressure sensor is arranged on the pipeline between the other end of the third boost solenoid valve and the third boost orifice plate; the fourth pressure sensor is used to collect the pressure before the third boost orifice plate; the fifth pressure sensor is arranged on the pipeline between the pipeline connecting the other end of the first boost orifice plate, the other end of the second boost orifice plate and the other end of the third boost orifice plate and the pipeline connecting the second one-way valve and the storage tank; the fifth pressure sensor is used to collect the pressure after the first boost orifice plate, the second boost orifice plate and the third boost orifice plate; the sixth pressure sensor, the seventh pressure sensor and the eighth pressure sensor are all arranged on the storage tank; the sixth pressure sensor, the seventh pressure sensor and the eighth pressure sensor are all used to collect the actual pressure of the storage tank.

[0014] As above, wherein the first pressure sensor is located between the first temperature sensor and the gas flow meter; the second pressure sensor is located between the second temperature sensor and the first boost solenoid valve; the third pressure sensor is located between the third temperature sensor and the second boost solenoid valve; the fourth pressure sensor is located between the fourth temperature sensor and the third boost solenoid valve; the fifth pressure sensor is located between the fifth temperature sensor and the other end of the first boost orifice plate, the other end of the second boost orifice plate and the other end of the third boost orifice plate.

[0015] The beneficial effects achieved by this application are as follows:

[0016] (1) This application designs a new gas cylinder deflation and pressurization system performance verification test system, which can realize both gas cylinder deflation test and gas cylinder pressurization system performance verification test.

[0017] (2) The test system for verifying the performance of the gas cylinder deflation and pressurization system of the present application simulates the tank drainage by exhausting the gas, discharges the gas in the tank at an equal volume flow rate, simulates the tank drainage process, and realizes the verification of the pressurization system without the need to build a complex drainage system.

[0018] (3) The test system for performance verification of the gas cylinder deflation and pressurization system of the present application can realize the calibration of the orifice plate flow coefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application 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 some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the structure of an embodiment of a traditional test system;

[0021] Figure 2 A schematic diagram of the structure of an embodiment of a test system for verifying the performance of a gas cylinder deflation and pressurization system;

[0022] Figure 3 The flowchart of the test sequence is shown in Figure 1. Figure 3 (a) is the flow chart of the gas cylinder deflation test; Figure 3 (b) is the flow chart of the performance verification test of the gas cylinder pressurization system. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] like Figure 2 and 3 As shown, the present application provides a test system for verifying the performance of a gas cylinder deflation and pressurization system, including: a gas cylinder pressurization system, a ground pressurization system, a tank 1, an exhaust safety system and a measurement control system. Among them, the gas cylinder pressurization system is connected to the ground pressurization system and the tank 1; the gas cylinder pressurization system is used to simulate the pressurization on the arrow. The ground pressurization system is also connected to the tank 1; the ground pressurization system is used to simulate the ground pressurization. The exhaust safety system is connected to the tank 1; the exhaust safety system is used to release excess gas. The measurement control system is connected to the gas cylinder pressurization system and the tank 1; the measurement control system is used to control the test process and collect the temperature and pressure during the test process; wherein the test process at least includes: a gas cylinder deflation test and a gas cylinder pressurization system performance verification test.

[0025] Specifically, the ground pressurization system and the gas cylinder pressurization system merge into one pipeline before entering the tank 1. The pressurization methods of the test system for gas cylinder deflation and pressurization system performance verification in this application include gas cylinder pressurization and ground gas distribution platform pressurization. The gas cylinder pressurization method simulates the on-arrow pressurization, and the ground gas distribution platform pressurization method simulates the ground pressurization.

[0026] When the system pressure exceeds the safety setting value, the system needs to be maintained stable, or the equipment performance needs to be optimized, the excess gas is released through the exhaust insurance system, which prevents overpressure damage, improves system stability and reduces risks.

[0027] Furthermore, the tank 1 adopts a simulated tank, but is not limited to a simulated tank. The present application preferably adopts a simulated tank.

[0028] Furthermore, the specific volume of the storage tank 1 is set according to actual conditions, and the present application preferably has the volume of the storage tank 1 equal to the volume of the air pillow.

[0029] Further, such as Figure 2As shown, the gas cylinder pressurization system includes: a charging manual valve SQ1, a gas cylinder group 2, a first gas filter 3, a gas flow meter 4, a first boosting solenoid valve ZY1, a second boosting solenoid valve ZY2, a third boosting solenoid valve ZY3, a first boosting orifice plate 5, a second boosting orifice plate 6 and a third boosting orifice plate 7. One end of the charging manual valve SQ1 is connected to one end of the gas cylinder group 2 through a pipeline. The other end of the gas cylinder group 2 is connected to one end of the first gas filter 3 through a pipeline. The other end of the first gas filter 3 is connected to one end of the gas flow meter 4 through a pipeline. After one end of the first boosting solenoid valve ZY1, one end of the second boosting solenoid valve ZY2 and one end of the third boosting solenoid valve ZY3 are connected to each other through a pipeline, they are also connected to the other end of the gas flow meter 4 through a pipeline. The other end of the first boost solenoid valve ZY1 is connected to one end of the first boost orifice plate 5 through a pipeline; the other end of the second boost solenoid valve ZY2 is connected to one end of the second boost orifice plate 6 through a pipeline; the other end of the third boost solenoid valve ZY3 is connected to one end of the third boost orifice plate 7 through a pipeline. After the other end of the first boost orifice plate 5, the other end of the second boost orifice plate 6 and the other end of the third boost orifice plate 7 are connected to each other through a pipeline, they are also connected to the tank 1 and the ground boost system through a pipeline.

[0030] Specifically, one end of the first boost solenoid valve ZY1, one end of the second boost solenoid valve ZY2 and one end of the third boost solenoid valve ZY3 are merged into a pipeline before being connected to the other end of the gas flow meter 4. The other end of the first boost orifice plate 5, the other end of the second boost orifice plate 6 and the other end of the third boost orifice plate 7 are merged into a pipeline before being connected to the tank 1 and the ground boost system. The first boost solenoid valve ZY1, the second boost solenoid valve ZY2 and the third boost solenoid valve ZY3 are connected in parallel. The first boost orifice plate 5, the second boost orifice plate 6 and the third boost orifice plate 7 are connected in parallel. The gas flow meter 4 is used to record the boost gas flow.

[0031] Furthermore, the number of gas cylinders in the gas cylinder group 2 is set according to actual conditions, and the multiple gas cylinders are connected through pipelines, and the multiple gas cylinders are connected in series.

[0032] Furthermore, a diffusion device 8 is provided in the storage tank 1. The other end of the first boost orifice plate 5, the other end of the second boost orifice plate 6 and the other end of the third boost orifice plate 7 are connected to each other through a pipeline, and are also connected to the diffusion device 8 in the storage tank 1 through a pipeline.

[0033] Specifically, the diffusion device 8 is used to promote gas diffusion, so that the gas can be evenly dispersed into the surrounding environment, ensuring that the gas quickly reaches a desired concentration distribution in a specific space.

[0034] Further, such as Figure 2As shown, the ground pressurization system includes: a first solenoid valve DQ1, a fourth pressurization orifice plate 9, a second gas filter 10, a first check valve 11 and a second check valve 12. One end of the first solenoid valve DQ1 is connected to the ground gas source through a pipeline, and the other end of the first solenoid valve DQ1 is connected to one end of the fourth pressurization orifice plate 9 through a pipeline; the other end of the fourth pressurization orifice plate 9 is connected to one end of the second gas filter 10 through a pipeline; the other end of the second gas filter 10 is connected to one end of the first check valve 11 through a pipeline; the other end of the first check valve 11 is connected to one end of the second check valve 12 through a pipeline; the other end of the second check valve 12 is connected to the tank 1, the other end of the first pressurization orifice plate 5, the other end of the second pressurization orifice plate 6 and the other end of the third pressurization orifice plate 7 through a pipeline.

[0035] Specifically, the first one-way valve 11 and the second one-way valve 12 are connected in series. The first solenoid valve DQ1, the fourth pressure-increasing orifice plate 9, the second gas filter 10, the first one-way valve 11 and the second one-way valve 12 form a ground pressure-increasing circuit.

[0036] Furthermore, the other end of the second one-way valve 12 is communicated with the diffusion device 8 in the storage tank 1 .

[0037] Further, such as Figure 2 As shown, the exhaust insurance system includes: an exhaust valve 13, an exhaust orifice plate 14, a second electromagnetic valve DQ2 and a safety valve 15. The first end of the exhaust valve 13 is connected to the tank 1 through a pipeline; the second end of the exhaust valve 13 is connected to one end of the exhaust orifice plate 14 through a pipeline, and the other end of the exhaust orifice plate 14 exhausts air through the pipeline; the third end of the exhaust valve 13 is connected to one end of the second electromagnetic valve DQ2 through a pipeline, and the other end of the second electromagnetic valve DQ2 is connected to the ground control air through a pipeline; one end of the safety valve 15 is connected to the tank 1 through a pipeline, and the other end of the safety valve 15 is connected to the second end of the exhaust valve 13 and one end of the exhaust orifice plate 14 through a pipeline.

[0038] Furthermore, when the gas cylinder deflation test is performed, the aperture of the exhaust hole plate 14 is greater than or equal to the effective exhaust diameter of the second solenoid valve DQ2 (ie, the air supply valve).

[0039] Furthermore, when performing the performance verification test of the boost system, the aperture size of the exhaust orifice plate 14 is reasonably set according to actual needs so that the aperture size matches the tank pressure of the tank 1, and the tank discharge during the rocket flight is simulated by exhausting the tank.

[0040] Further, such as Figure 2 As shown, the measurement and control system includes: temperature sensor, pressure sensor and test measurement and control system.

[0041] Among them, the temperature sensor is used to collect the temperature during the test, wherein the temperature during the test includes at least: the temperature before the boost orifice plate, the temperature after the boost orifice plate and the temperature at the outlet of the gas cylinder.

[0042] Pressure sensor: used to collect the pressure during the test, where the pressure during the test includes at least: the pressure before the pressure-boosting orifice plate, the pressure after the pressure-boosting orifice plate, the pressure at the outlet of the gas cylinder and the actual pressure of the tank.

[0043] Test measurement and control system: used to set a pressure control band for the boost solenoid valve, and control the opening and closing of the boost solenoid valve through the relationship between the corresponding pressure control band of the boost solenoid valve and the actual pressure of the tank; wherein, pressure control band = [upper pressure limit, lower pressure limit]; the boost solenoid valve comprises at least: a first boost solenoid valve ZY1, a second boost solenoid valve ZY2 and a third boost solenoid valve ZY3; the pressure control band of the first boost solenoid valve ZY1, the pressure control band of the second boost solenoid valve ZY2 and the pressure control band of the third boost solenoid valve ZY3 are all different.

[0044] Furthermore, when the pressure in the tank 1 is less than the lower limit of the pressure band, the boost solenoid valve corresponding to the lower limit of the pressure band opens; when the pressure in the tank 1 is greater than the upper limit of the pressure band, the boost solenoid valve corresponding to the upper limit of the pressure band closes; when the pressure in the tank 1 is greater than or equal to the lower limit of the pressure band, and less than or equal to the upper limit of the pressure band, the corresponding boost solenoid valve maintains the current state.

[0045] Furthermore, the temperature sensor at least includes: a first temperature sensor T1, a second temperature sensor T2, a third temperature sensor T3, a fourth temperature sensor T4 and a fifth temperature sensor T5.

[0046] Among them, the first temperature sensor T1 is arranged on the pipe between the gas flowmeter 4 and the pipe connecting one end of the first boost solenoid valve ZY1, one end of the second boost solenoid valve ZY2 and one end of the third boost solenoid valve ZY3; the first temperature sensor T1 is used to collect the temperature at the outlet of the gas cylinder.

[0047] The second temperature sensor T2 is arranged on the pipeline between the other end of the first boost solenoid valve ZY1 and the first boost orifice plate 5 ; the second temperature sensor T2 is used to collect the temperature before the first boost orifice plate 5 .

[0048] The third temperature sensor T3 is arranged on the pipeline between the other end of the second boost solenoid valve ZY2 and the second boost orifice plate 6 ; the third temperature sensor T3 is used to collect the temperature before the second boost orifice plate 6 .

[0049] The fourth temperature sensor T4 is arranged on the pipeline between the other end of the third boost solenoid valve ZY3 and the third boost orifice plate 7 ; the fourth temperature sensor T4 is used to collect the temperature before the third boost orifice plate 7 .

[0050] The fifth temperature sensor T5 is arranged on a pipe between a pipe connecting the other end of the first boost orifice 5, the other end of the second boost orifice 6 and the other end of the third boost orifice 7 and a pipe connecting the second one-way valve 12 and the tank 1; the fifth temperature sensor T5 is used to collect the temperature after the first boost orifice 5, the second boost orifice 6 and the third boost orifice 7.

[0051] Further, the pressure sensor at least includes: a first pressure sensor P1, a second pressure sensor P2, a third pressure sensor P3, a fourth pressure sensor P4, a fifth pressure sensor P5, a sixth pressure sensor P6, a seventh pressure sensor P7 and an eighth pressure sensor P8.

[0052] The first pressure sensor P1 is arranged on the pipe between the gas flow meter 4 and the pipe connecting one end of the first boost solenoid valve ZY1, one end of the second boost solenoid valve ZY2 and one end of the third boost solenoid valve ZY3; the first pressure sensor P1 is used to collect the pressure at the outlet of the gas cylinder.

[0053] The second pressure sensor P2 is disposed on a pipeline between the other end of the first boost solenoid valve ZY1 and the first boost orifice plate 5 ; the second pressure sensor P2 is used to collect the pressure before the first boost orifice plate 5 .

[0054] The third pressure sensor P3 is arranged on the pipeline between the other end of the second boost solenoid valve ZY2 and the second boost orifice plate 6; the third pressure sensor P3 is used to collect the pressure before the second boost orifice plate 6. The fourth pressure sensor P4 is arranged on the pipeline between the other end of the third boost solenoid valve ZY3 and the third boost orifice plate 7; the fourth pressure sensor P4 is used to collect the pressure before the third boost orifice plate 7.

[0055] The fifth pressure sensor P5 is arranged on a pipe between the pipe connecting the other end of the first boosting orifice 5, the other end of the second boosting orifice 6 and the other end of the third boosting orifice 7 and the pipe connecting the second one-way valve 12 and the tank 1; the fifth pressure sensor P5 is used to collect the pressure after the first boosting orifice 5, the second boosting orifice 6 and the third boosting orifice 7.

[0056] The sixth pressure sensor P6 , the seventh pressure sensor P7 and the eighth pressure sensor P8 are all arranged on the storage tank 1 ; the sixth pressure sensor P6 , the seventh pressure sensor P7 and the eighth pressure sensor P8 are all used to collect the actual pressure of the storage tank 1 .

[0057] Furthermore, the first pressure sensor P1 is located between the first temperature sensor T1 and the gas flow meter 4 .

[0058] The second pressure sensor P2 is located between the second temperature sensor T2 and the first pressure boosting solenoid valve ZY1 .

[0059] The third pressure sensor P3 is located between the third temperature sensor T3 and the second boost solenoid valve ZY2.

[0060] The fourth pressure sensor P4 is located between the fourth temperature sensor T4 and the third pressure boosting solenoid valve ZY3.

[0061] The fifth pressure sensor P5 is located between the fifth temperature sensor T5 and the other end of the first pressurizing orifice plate 5 , the other end of the second pressurizing orifice plate 6 , and the other end of the third pressurizing orifice plate 7 .

[0062] The test system for cylinder deflation and pressurization system performance verification in this application can realize cylinder deflation test and cylinder pressurization system performance verification test. Whether it is a cylinder deflation test or a cylinder pressurization system performance verification test, it is necessary to fill the cylinder group with high-pressure gas in advance, and then close the gas filling hand valve SQ1. After stabilization, the test can be carried out, and the value of each pressure sensor and temperature sensor is recorded in real time through the acquisition equipment, and the solenoid valve is closed to stop deflation.

[0063] Specifically, Figure 3 As shown in (a), when the gas cylinder deflation test is performed, the ground controls the gas supply, opens the second solenoid valve DQ2 to open the exhaust valve 13, and maintains the connection with the tank 1 and the outside world. When deflation (i.e., section t1), it is only necessary to open any one of the first boost solenoid valve ZY1, the second boost solenoid valve ZY2, and the third boost solenoid valve ZY3 to achieve deflation of the gas cylinder, and the deflation stops when the pressure of the gas cylinder reaches the preset pressure threshold. Alternatively, any two of the first boost solenoid valve ZY1, the second boost solenoid valve ZY2, and the third boost solenoid valve ZY3 are opened, or the first boost solenoid valve ZY1, the second boost solenoid valve ZY2, and the third boost solenoid valve ZY3 are opened to achieve deflation at different rates. Deflation at different deflation rates can be achieved without making any changes to the test system, and a multi-condition test can be achieved.

[0064] Furthermore, the specific value of the pressure threshold is set according to actual conditions, and the preferred value in this application is 1 MPa.

[0065] Specifically, P1 of the first boost solenoid valve ZY1 , the second boost solenoid valve ZY2 , and the third boost solenoid valve ZY3 is less than the pressure threshold.

[0066] like Figure 3As shown in (b), different pressure control bands need to be set for the first boost solenoid valve ZY1, the second boost solenoid valve ZY2 and the third boost solenoid valve ZY3 in the test measurement and control system. The test measurement and control system controls the opening and closing of the boost solenoid valves ZY1 to ZY3 according to the relationship between the actual pressure (P6 to P8) of the tank 1 and the pressure control bands of the corresponding boost solenoid valves (i.e., the first boost solenoid valve ZY1, the second boost solenoid valve ZY2 and the third boost solenoid valve ZY3), so as to realize the closed control of the tank gas cylinder pressurization. Specifically, when the pressure of the tank 1 is less than the lower limit of the pressure band, the boost solenoid valve corresponding to the lower limit of the pressure band is opened; when the pressure of the tank 1 is greater than the upper limit of the pressure band, the boost solenoid valve corresponding to the upper limit of the pressure band is closed; when the tank pressure is within the interval of the pressure control band (including the upper and lower limits), the corresponding boost solenoid valve maintains the current state. By setting the system running time to the actual flight time, the test measurement and control system can simulate the working conditions of the boost system during the rocket flight and obtain the relevant parameters of the boost system. Before the system is pressurized, the pressure of tank 1 is first increased to a preset value through the ground boosting system. After the boosting starts (i.e. after t0), the second solenoid valve DQ2 (simulated drainage) and the closed boosting control of the start solenoid valves ZY1 to ZY3 (i.e. the first boosting solenoid valve ZY1, the second boosting solenoid valve ZY2 and the third boosting solenoid valve ZY3) are opened at the same time. In the t (rocket flight time) period, the first boosting solenoid valve ZY1, the second boosting solenoid valve ZY2 and the third boosting solenoid valve ZY3 enter the closed control process.

[0067] The main purpose of the gas cylinder deflation test and the gas cylinder pressurization system performance verification test is to assess the ability of the liquid rocket pressurization system and verify the correctness of the pressurization system design. The test comparison is accompanied by the deflation of the gas cylinder. During the deflation process, the pressure and temperature change rules of the gas cylinder are obtained, and the calculation model of the gas cylinder deflation and pressurization is corrected so that the system can match the reasonable gas cylinder volume and quantity under the premise of obtaining sufficient supercharging capacity, and realize the refined design of the supercharging system. One of the main functions of the pump-type supercharging system is to ensure that the tank air pillow pressure is within a reasonable design range. The main factors affecting the change of the tank air pillow pressure are the volume change rate of the air pillow and the initial volume of the air pillow due to the discharge of the propellant. Therefore, the main function of the gas cylinder deflation and supercharging system performance test is to determine the correctness of the gas cylinder supercharging system scheme and parameters through the test. This application aims to design a simple, efficient and reliable test system to simulate the working conditions of the supercharging and delivery system during the rocket flight without ignition of the rocket engine, simulate the discharge of liquid by equal volume exhaust, verify the supercharging control logic, and fully verify the supercharging system in an efficient, fast and reliable way.

[0068] The beneficial effects achieved by this application are as follows:

[0069] (1) This application designs a new gas cylinder deflation and pressurization system performance verification test system, which can realize both gas cylinder deflation test and gas cylinder pressurization system performance verification test.

[0070] (2) The test system for verifying the performance of the gas cylinder deflation and pressurization system of the present application simulates the tank drainage by exhausting the gas, discharges the gas in the tank at an equal volume flow rate, simulates the tank drainage process, and realizes the verification of the pressurization system without the need to build a complex drainage system.

[0071] (3) The test system for performance verification of the gas cylinder deflation and pressurization system of the present application can realize the calibration of the orifice plate flow coefficient.

[0072] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the scope of protection of the present application is intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application. Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the protection scope of the present application and its equivalent technology, the present application is also intended to include these modifications and variations.

Claims

1. A test system for verifying the performance of a gas cylinder deflation and pressurization system, characterized in that: include: Gas cylinder pressurization system, ground pressurization system, storage tank, exhaust insurance system and measurement and control system; Among them, the gas cylinder pressurization system is connected with the ground pressurization system and the tank; the gas cylinder pressurization system is used to simulate the pressurization on the arrow; The ground pressurization system is also connected to the tank; the ground pressurization system is used to simulate ground pressurization; The exhaust insurance system is connected to the tank; the exhaust insurance system is used to release excess gas; The measurement and control system is connected with the gas cylinder pressurization system and the storage tank; the measurement and control system is used to control the test process and collect the temperature and pressure during the test process; wherein, the test process at least includes: gas cylinder deflation test and gas cylinder pressurization system performance verification test.

2. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 1 is characterized in that: The gas cylinder pressurizing system includes: a charging hand valve, a gas cylinder group, a first gas filter, a gas flow meter, a first pressurizing solenoid valve, a second pressurizing solenoid valve, a third pressurizing solenoid valve, a first pressurizing orifice plate, a second pressurizing orifice plate and a third pressurizing orifice plate; One end of the inflation hand valve is connected to one end of the gas cylinder group through a pipeline; The other end of the gas cylinder group is connected to one end of the first gas filter through a pipeline; The other end of the first gas filter is connected to one end of the gas flow meter through a pipeline; One end of the first boost solenoid valve, one end of the second boost solenoid valve and one end of the third boost solenoid valve are connected to each other through a pipeline, and are also connected to the other end of the gas flow meter through the pipeline; The other end of the first boost solenoid valve is connected to one end of the first boost orifice plate through a pipeline; the other end of the second boost solenoid valve is connected to one end of the second boost orifice plate through a pipeline; the other end of the third boost solenoid valve is connected to one end of the third boost orifice plate through a pipeline; The other end of the first pressurizing orifice plate, the other end of the second pressurizing orifice plate and the other end of the third pressurizing orifice plate are connected to each other through pipelines, and are also connected to the storage tank and the ground pressurizing system through pipelines.

3. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 2 is characterized in that: A diffusion device is arranged in the storage tank. The other end of the first pressure-increasing orifice plate, the other end of the second pressure-increasing orifice plate and the other end of the third pressure-increasing orifice plate are connected to each other through a pipeline and are also connected to the diffusion device in the storage tank through the pipeline.

4. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 3 is characterized in that: The ground pressurization system includes: a first solenoid valve, a fourth pressurization orifice plate, a second gas filter, a first check valve and a second check valve; One end of the first solenoid valve is connected to the ground gas source through a pipeline, and the other end of the first solenoid valve is connected to one end of the fourth boosting orifice plate through a pipeline; The other end of the fourth pressurizing orifice plate is connected to one end of the second gas filter through a pipeline; The other end of the second gas filter is connected to one end of the first one-way valve through a pipeline; The other end of the first one-way valve is connected to one end of the second one-way valve through a pipeline; The other end of the second one-way valve is communicated with the storage tank, the other end of the first pressurizing orifice plate, the other end of the second pressurizing orifice plate and the other end of the third pressurizing orifice plate through a pipeline.

5. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 4 is characterized in that: The other end of the second one-way valve is communicated with the diffusion device in the storage tank.

6. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 5, characterized in that: The exhaust insurance system includes: an exhaust valve, an exhaust orifice plate, a second solenoid valve and a safety valve; The first end of the exhaust valve is connected to the storage tank through a pipeline; The second end of the exhaust valve is connected to one end of the exhaust orifice plate through a pipeline, and the other end of the exhaust orifice plate exhausts air through the pipeline; The third end of the exhaust valve is connected to one end of the second solenoid valve through a pipeline, and the other end of the second solenoid valve is connected to the ground control air through a pipeline; One end of the safety valve is communicated with the storage tank through a pipeline, and the other end of the safety valve is communicated with the second end of the exhaust valve and one end of the exhaust orifice plate through a pipeline.

7. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 6, characterized in that: The measurement and control system includes: temperature sensor, pressure sensor and test measurement and control system; Wherein, the temperature sensor is used to collect the temperature during the test, wherein the temperature during the test includes at least: the temperature before the booster orifice plate, the temperature after the booster orifice plate and the temperature at the outlet of the gas cylinder; Pressure sensor: used to collect the pressure during the test, where the pressure during the test includes at least: the pressure before the pressure-boosting orifice plate, the pressure after the pressure-boosting orifice plate, the pressure at the outlet of the gas cylinder and the actual pressure of the tank; Test measurement and control system: used to set a pressure control band for the boost solenoid valve, and control the opening and closing of the boost solenoid valve through the relationship between the corresponding pressure control band of the boost solenoid valve and the actual pressure of the tank; wherein, pressure control band = [pressure upper limit value, pressure lower limit value]; the boost solenoid valve comprises at least: a first boost solenoid valve, a second boost solenoid valve and a third boost solenoid valve; the pressure control band of the first boost solenoid valve, the pressure control band of the second boost solenoid valve and the pressure control band of the third boost solenoid valve are all different.

8. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 7, characterized in that: The temperature sensor includes at least: a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor and a fifth temperature sensor; The first temperature sensor is arranged on a pipe between the gas flow meter and a pipe connecting one end of the first boosting solenoid valve, one end of the second boosting solenoid valve and one end of the third boosting solenoid valve; the first temperature sensor is used to collect the temperature at the outlet of the gas cylinder; The second temperature sensor is arranged on the pipeline between the other end of the first boost solenoid valve and the first boost orifice plate; the second temperature sensor is used to collect the temperature before the first boost orifice plate; The third temperature sensor is arranged on the pipeline between the other end of the second boost solenoid valve and the second boost orifice plate; the third temperature sensor is used to collect the temperature before the second boost orifice plate; The fourth temperature sensor is arranged on the pipeline between the other end of the third boost solenoid valve and the third boost orifice plate; the fourth temperature sensor is used to collect the temperature before the third boost orifice plate; The fifth temperature sensor is arranged on a pipe between the pipe connecting the other end of the first boost orifice plate, the other end of the second boost orifice plate and the other end of the third boost orifice plate and the pipe connecting the second one-way valve and the storage tank; the fifth temperature sensor is used to collect the temperature after the first boost orifice plate, the second boost orifice plate and the third boost orifice plate.

9. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 8, characterized in that: The pressure sensor includes at least: a first pressure sensor, a second pressure sensor, a third pressure sensor, a fourth pressure sensor, a fifth pressure sensor, a sixth pressure sensor, a seventh pressure sensor and an eighth pressure sensor; The first pressure sensor is arranged on a pipe between the gas flow meter and a pipe connecting one end of the first boosting solenoid valve, one end of the second boosting solenoid valve and one end of the third boosting solenoid valve; the first pressure sensor is used to collect the pressure at the outlet of the gas cylinder; The second pressure sensor is arranged on the pipeline between the other end of the first boost solenoid valve and the first boost orifice plate; the second pressure sensor is used to collect the pressure before the first boost orifice plate; The third pressure sensor is arranged on the pipeline between the other end of the second boost solenoid valve and the second boost orifice plate; the third pressure sensor is used to collect the pressure before the second boost orifice plate; The fourth pressure sensor is arranged on the pipeline between the other end of the third boost solenoid valve and the third boost orifice plate; the fourth pressure sensor is used to collect the pressure before the third boost orifice plate; The fifth pressure sensor is arranged on a pipe between the pipe connecting the other end of the first pressure-increasing orifice plate, the other end of the second pressure-increasing orifice plate and the other end of the third pressure-increasing orifice plate and the pipe connecting the second one-way valve and the tank; the fifth pressure sensor is used to collect the pressure after the first pressure-increasing orifice plate, the second pressure-increasing orifice plate and the third pressure-increasing orifice plate; The sixth pressure sensor, the seventh pressure sensor and the eighth pressure sensor are all arranged on the storage tank; the sixth pressure sensor, the seventh pressure sensor and the eighth pressure sensor are all used to collect the actual pressure of the storage tank.

10. The test system for performance verification of gas cylinder deflation and pressurization system according to claim 9, characterized in that: The first pressure sensor is located between the first temperature sensor and the gas flow meter; The second pressure sensor is located between the second temperature sensor and the first boost solenoid valve; The third pressure sensor is located between the third temperature sensor and the second boost solenoid valve; The fourth pressure sensor is located between the fourth temperature sensor and the third boost solenoid valve; The fifth pressure sensor is located between the fifth temperature sensor and the other end of the first pressurizing orifice plate, the other end of the second pressurizing orifice plate, and the other end of the third pressurizing orifice plate.

Images