A gas heater test bench

Abstract

A gas heater test bench, a test section is provided with a workpiece to be tested, a gas generator is communicated with the inlet of the test section, an exhaust section is communicated with the outlet of the test section, an igniter is arranged in the gas generator; the outlet of the exhaust section is communicated with a sound attenuation tower through an exhaust pipeline; a medium-pressure gas source is communicated with the gas generator and the igniter through a gas source supply system respectively; a high-pressure circulating water source is communicated with the test section, the gas generator and the exhaust section through a high-pressure water supply system respectively; a low-pressure water spraying source is communicated with the exhaust section through a low-pressure water spraying system; an alcohol source is communicated with the gas generator through an alcohol supply system; a nitrogen gas source and a liquid oxygen source are communicated with the gas generator through a liquid oxygen and nitrogen supply system; a kerosene supply source of the igniter is communicated with the igniter. The gas heater test bench satisfies the working state of the local missile head cover and the air inlet under the simulated flight state of the hypersonic aircraft, and provides a basis for the material selection and structure design of the type under the aerodynamic heating condition.

Description

Technical Field

[0001] This invention relates to the field of test bench technology, specifically to a gas heater test bench. Background Technology

[0002] For hypersonic aircraft, it is necessary to simulate the working state of the local missile body shroud and air intake during the research and development process. In the simulation test, the missile body shroud and the air intake passage under the lower jaw are soaked with heated gas to assess the structural strength and compartment sealing of the shroud and air intake. The deformation and strength of the missile head under various loading conditions are measured to provide a basis for the material selection and structural design of the model under aerodynamic heating conditions. However, there is currently no such gas heater test bench in the existing technology. Summary of the Invention

[0003] The technical problem solved by the present invention is to overcome the shortcomings of the prior art and provide a gas heater test bench.

[0004] The technical solution of this invention is:

[0005] A gas heater test bench includes a test section, a gas generator, an exhaust section, an exhaust pipe, a silencer tower, a medium-pressure gas source, a high-pressure circulating water source, a low-pressure spray water source, an alcohol source, a nitrogen source, a liquid oxygen source, an igniter kerosene supply source, and an igniter. The test section houses the workpiece to be tested. The gas generator is connected to the inlet of the test section, and the exhaust section is connected to the outlet of the test section. The igniter is located inside the gas generator. The outlet of the exhaust section is connected to the silencer tower via the exhaust pipe. The medium-pressure gas source is connected to both the gas generator and the igniter via a gas supply system. The high-pressure circulating water source is connected to the test section, the gas generator, and the exhaust section via a high-pressure water supply system. The low-pressure spray water source is connected to the exhaust section via a low-pressure spray water system. The alcohol source is connected to the gas generator via an alcohol supply system. The nitrogen source and liquid oxygen source are connected to the gas generator via a liquid oxygen and nitrogen supply system. The igniter kerosene supply source is connected to the igniter.

[0006] Furthermore, the gas supply system includes a main gas supply line, the inlet of which is connected to a medium-pressure gas source. Along the gas flow direction of the medium-pressure gas source, the main gas supply line is sequentially equipped with a gas supply system shut-off valve, a gas supply system ball valve, a gas supply system pressure regulating valve, and a gas supply system safety valve. After the safety valve, a parallel gas supply line for a gas heater and a gas supply line for an igniter are provided. Both the parallel gas supply lines for the gas heater and the igniter are connected to the main gas supply line, and their outlets are connected to the gas generator and the igniter, respectively.

[0007] Furthermore, a gas heater gas supply line nozzle 151 is provided on the gas supply line of the gas heater; the inner flow channel of the gas heater gas supply line nozzle 151 is converging; an igniter gas supply line shut-off valve 161 is provided on the igniter gas supply line.

[0008] Furthermore, the high-pressure water supply system includes a high-pressure water supply main and parallel high-pressure circulating water circuits for the gas generator, a test section, and an exhaust section. The inlet of the high-pressure water supply main is connected to the high-pressure circulating water source. The inlets of the parallel high-pressure circulating water circuits for the gas generator, the test section, and the exhaust section are all connected to the outlet of the high-pressure water supply main. The high-pressure circulating water circuits for the gas generator, the test section, and the exhaust section are respectively connected to the jacketed cooling water jackets of the test section, the gas generator, and the exhaust section.

[0009] Furthermore, the high-pressure circulating water circuit of the gas generator includes a high-pressure circulating water supply circuit and a high-pressure circulating water return circuit. The inlet of the high-pressure circulating water supply circuit is connected to the outlet of the high-pressure water supply main circuit, and the outlet is connected to the inlet of the jacketed cooling water jacket of the gas generator. The inlet of the high-pressure circulating water return circuit is connected to the outlet of the jacketed cooling water jacket of the gas generator, and the outlet is connected to the circulating water pool.

[0010] Furthermore, the high-pressure water supply system includes an igniter high-pressure circulating water circuit, which includes an igniter high-pressure circulating water circuit supply line and an igniter high-pressure circulating water circuit return line. The inlet of the igniter high-pressure circulating water circuit supply line is connected to the outlet of the gas generator high-pressure circulating water circuit supply line, and the outlet is connected to the inlet of the igniter's jacketed cooling water jacket. The inlet of the igniter high-pressure circulating water circuit return line is connected to the outlet of the igniter's jacketed cooling water jacket, and the outlet is connected to the gas generator high-pressure circulating water return line.

[0011] Furthermore, the low-pressure water spray system includes a low-pressure water spray main and several parallel low-pressure water spray system branches. The inlet of the low-pressure water spray main is connected to the low-pressure water source, and the inlets of the several parallel low-pressure water spray system branches are all connected to the outlet of the low-pressure water spray main. The outlet of each low-pressure water spray system branch is connected to a water spray ring in the exhaust section.

[0012] Furthermore, the alcohol supply system includes an alcohol supply line, the inlet of which is connected to an alcohol source and the outlet of which is connected to a gas generator. Along the flow direction of the alcohol supplied from the alcohol source, the alcohol supply line is sequentially equipped with an alcohol supply system first solenoid valve, an alcohol supply system pressure regulating valve, an alcohol supply system flow regulating valve, an alcohol supply system second solenoid valve, and an alcohol supply system check valve.

[0013] Furthermore, the liquid oxygen and nitrogen supply system includes a nitrogen supply main line, a liquid oxygen filling line, a liquid oxygen supply line, a liquid oxygen pressurization line, and a nitrogen venting line; the inlet of the nitrogen supply main line is connected to the nitrogen source; the liquid oxygen filling line, the liquid oxygen pressurization line, and the nitrogen venting line are arranged in parallel, and their inlets are all connected to the outlet of the nitrogen supply main line; the outlet of the liquid oxygen filling line is connected to the inlet of the liquid oxygen source; the inlet of the liquid oxygen supply line is connected to the outlet of the liquid oxygen source, and its outlet is connected to the gas generator; the outlet of the liquid oxygen pressurization line is connected to the liquid oxygen supply line; and the nitrogen venting line is connected to the atmosphere.

[0014] Furthermore, the igniter kerosene supply source, gas supply system, high-pressure water supply system, low-pressure water spray system, alcohol supply system, liquid oxygen and nitrogen supply system, and igniter kerosene supply source are located in the equipment room and test section, while the gas generator, exhaust section, and igniter are located in the test room.

[0015] The advantages of this invention compared to the prior art are:

[0016] 1. The gas heater test bench of the present invention meets the working conditions of the local missile body shroud and air intake under simulated flight conditions of hypersonic aircraft, and provides a basis for material selection and structural design of the model under aerodynamic heating conditions.

[0017] 2. In the gas heater test bench of this invention, the gas supply system's inlet flow control device has a simple structure, is easy to operate, and has a fast response speed, shortening the simulation time and reducing test costs. By setting pressure measuring points, a basis for valve opening adjustment is provided. By setting an igniter gas supply path, a gas source is provided to both the gas generator and the igniter. By setting a supply path nozzle, the gas supply flow rate is effectively controlled.

[0018] 3. In the gas heater test bench of the present invention, a combination of high-pressure circulating water cooling and low-pressure water spraying is used to effectively cool the test section, gas generator and exhaust section, which not only meets the needs of the test, but also saves water resources, taking into account both practicality and economy.

[0019] 4. In the gas heater test bench of the present invention, the alcohol supply system uses a two-stage pressure regulating valve to adjust the flow rate and ensure the accuracy of the total alcohol flow rate.

[0020] 5. In the gas heater test bench of this invention, the liquid oxygen and nitrogen supply system can precisely control the opening and closing of the oxygen valve and supply nitrogen using a pressurized method to avoid oxygen pipeline explosions, thus balancing safety and applicability. By setting up filters in the liquid oxygen supply line and nitrogen pressurization line, the purity of the liquid oxygen is improved, preventing oxygen pipeline explosions caused by grease or high-speed iron filings in the pipeline. By setting up monitoring of relevant valves and pressure gauges, relevant parameters of the entire supply system can be monitored in a timely and effective manner, thereby improving the accuracy of the entire supply system and preventing oxygen pipeline explosions. By setting up a venting path, when the pressure monitored at the pressure measuring point of the liquid oxygen supply line exceeds a predetermined value, nitrogen can be released through the venting path to prevent the liquid oxygen storage tank from exploding. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the principle of the gas heater test bench of the present invention.

[0022] Figure 2 This is a schematic diagram of the gas supply system in the gas heater test bench of the present invention.

[0023] Figure 3 This is a schematic diagram of the high-pressure water supply system in the gas heater test bench of the present invention.

[0024] Figure 4 This is a schematic diagram of the low-pressure water spray system in the gas heater test bench of the present invention.

[0025] Figure 5 This is a schematic diagram of the alcohol supply system in the gas heater test bench of the present invention.

[0026] Figure 6 This is a schematic diagram of the liquid oxygen and nitrogen supply system in the gas heater test bench of the present invention. Detailed Implementation

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figure 1-6 As shown, a gas heater test bench includes a test section 1, a gas generator 2, an exhaust section 3, an exhaust pipe 4, a silencer tower 5, a medium-pressure gas source 10, a high-pressure circulating water source 20, a low-pressure spray water source 30, an alcohol source 40, a nitrogen source 50, a liquid oxygen source 60, an igniter kerosene supply source 70, and an igniter 700. The test section 1 is equipped with a workpiece to be tested. The gas generator 2 is connected to the inlet of the test section 1, the exhaust section 3 is connected to the outlet of the test section 1, and the igniter 700 is disposed within the gas generator 2. The outlet of the exhaust section 3 is connected to the silencer tower 5 via the exhaust pipe 4. The medium-pressure gas source 10 is connected to the gas generator 2 and the igniter 700 respectively through the gas supply system 100; the high-pressure circulating water source 20 is connected to the test section 1, the gas generator 2 and the exhaust section 3 respectively through the high-pressure water supply system 200; the low-pressure spray water source 30 is connected to the exhaust section 3 through the low-pressure spray water system 300; the alcohol source 40 is connected to the gas generator 2 through the alcohol supply system 400; the nitrogen source 50 and the liquid oxygen source 60 are connected to the gas generator 2 through the liquid oxygen and nitrogen supply system 500; and the kerosene supply source 70 for the igniter is connected to the igniter 700.

[0030] The gas supply system 100 includes a main gas supply line, the inlet of which is connected to the medium-pressure gas source 10. Along the gas flow direction supplied by the medium-pressure gas source 10, a gas supply system shut-off valve 110, a gas supply system ball valve 120, a gas supply system pressure regulating valve 130, and a gas supply system safety valve 140 are sequentially arranged on the main gas supply line. After the gas supply system safety valve 140, a parallel gas supply line 150 for a gas heater and a gas supply line 160 for an igniter are arranged. Both the parallel gas supply line 150 for a gas heater and the gas supply line 160 for an igniter are connected to the main gas supply line, and their outlets are connected to the gas generator 2 and the igniter 700, respectively.

[0031] Preferably, on the main supply line of the gas supply system, a gas supply system outlet pressure measuring point 170 is provided between the medium-pressure gas source 10 and the gas supply system shut-off valve 110, and a pressure gauge is provided on the gas supply system outlet pressure measuring point 170.

[0032] Preferably, on the main supply line of the gas supply system, an inlet pressure and temperature measuring point 180 of the gas supply system is provided between the ball valve 120 and the pressure regulating valve 130 of the gas supply system, and a thermometer is provided on the inlet pressure and temperature measuring point 180 of the gas supply system.

[0033] Preferably, on the main supply line of the gas supply system, an inlet pressure measuring point 190 of the gas supply system is provided between the pressure regulating valve 130 and the safety valve 140 of the gas supply system, and a pressure gauge is provided on the inlet pressure measuring point 190 of the gas supply system.

[0034] Preferably, the gas supply path 150 of the gas heater is provided with a gas supply path nozzle 151.

[0035] Preferably, the inner flow channel of the gas supply nozzle 151 of the gas heater is converging.

[0036] Preferably, an igniter gas supply circuit shut-off valve 161 is provided on the igniter gas supply circuit 160.

[0037] The medium-pressure gas source 10 has a pressure of 6 MPa-6.5 MPa, preferably 6.3 MPa.

[0038] The high-pressure water supply system includes a high-pressure water supply main and parallel high-pressure circulating water circuits 230 for the gas generator, 240 for the test section, and 250 for the exhaust section. The inlet of the high-pressure water supply main is connected to the high-pressure circulating water source 20. The inlets of the parallel high-pressure circulating water circuits 230 for the gas generator, 240 for the test section, and 250 for the exhaust section are all connected to the outlet of the high-pressure water supply main. The high-pressure circulating water circuits 230 for the gas generator, 240 for the test section, and 250 for the exhaust section are respectively connected to the jacketed cooling water jackets of the test section 1, the gas generator 2, and the exhaust section 3.

[0039] Preferably, a high-pressure water supply system ball valve 210 and a high-pressure water supply system filter 220 are sequentially installed on the high-pressure water supply main line along the direction of water flow supplied by the high-pressure circulating water source 20.

[0040] Preferably, on the high-pressure water supply main line, a high-pressure water supply system pressure measuring point 260 is provided between the high-pressure water supply system ball valve 210 and the high-pressure water supply system filter 220, and a pressure gauge is provided on the high-pressure water supply system pressure measuring point 260.

[0041] Preferably, the high-pressure circulating water circuit 230 of the gas generator includes a high-pressure circulating water supply circuit 231 and a high-pressure circulating water return circuit 232. The inlet of the high-pressure circulating water supply circuit 231 is connected to the outlet of the high-pressure water supply main circuit, and the outlet is connected to the inlet of the jacket cooling water jacket of the gas generator 2. The inlet of the high-pressure circulating water return circuit 232 is connected to the outlet of the jacket cooling water jacket of the gas generator 2, and the outlet is connected to the circulating water pool.

[0042] Preferably, along the direction of circulating water flow, the high-pressure circulating water supply circuit 231 of the gas generator is sequentially equipped with a gas generator high-pressure circulating water supply circuit shut-off valve 233, a gas generator high-pressure circulating water supply circuit flow regulating valve 234, and a gas generator high-pressure circulating water supply circuit flow meter 235, and the high-pressure circulating water return circuit 232 of the gas generator is equipped with a gas generator high-pressure circulating water return circuit shut-off valve 236.

[0043] Preferably, the high-pressure water supply system 200 includes an igniter high-pressure circulating water circuit 237, which includes an igniter high-pressure circulating water circuit supply circuit 238 and an igniter high-pressure circulating water circuit return circuit 239. The inlet of the igniter high-pressure circulating water circuit supply circuit 237 is connected to the outlet of the gas generator high-pressure circulating water circuit supply circuit 231, and the outlet is connected to the inlet of the jacketed cooling water jacket of the igniter 700. The inlet of the igniter high-pressure circulating water circuit return circuit 239 is connected to the outlet of the jacketed cooling water jacket of the igniter 700, and the outlet is connected to the gas generator high-pressure circulating water return circuit 232.

[0044] Preferably, the test section high-pressure circulating water circuit 240 includes a test section high-pressure circulating water supply circuit 241 and a test section high-pressure circulating water return circuit 242. The inlet of the test section high-pressure circulating water supply circuit 241 is connected to the outlet of the high-pressure water supply main circuit, and the outlet is connected to the inlet of the jacket cooling water jacket of the test section 1. The inlet of the test section high-pressure circulating water return circuit 242 is connected to the outlet of the jacket cooling water jacket of the test section 1, and the outlet is connected to the circulating water pool.

[0045] Preferably, along the direction of circulating water flow, the test section high-pressure circulating water supply circuit 241 is sequentially equipped with a test section high-pressure circulating water supply circuit stop valve 243, a test section high-pressure circulating water supply circuit flow regulating valve 244, and a test section high-pressure circulating water supply circuit flow meter 245, and the test section high-pressure circulating water return circuit 242 is equipped with a test section high-pressure circulating water return circuit stop valve 246.

[0046] Preferably, the high-pressure circulating water circuit 250 of the exhaust section includes a high-pressure circulating water supply circuit 251 and a high-pressure circulating water return circuit 252 of the exhaust section. The inlet of the high-pressure circulating water supply circuit 251 is connected to the outlet of the high-pressure water supply main circuit, and the outlet is connected to the inlet of the jacket cooling water jacket of the exhaust section 3. The inlet of the high-pressure circulating water return circuit 252 of the exhaust section is connected to the outlet of the jacket cooling water jacket of the exhaust section 3, and the outlet is connected to the circulating water pool.

[0047] Preferably, along the direction of circulating water flow, the high-pressure circulating water supply circuit 251 of the exhaust section is sequentially equipped with a high-pressure circulating water supply circuit stop valve 253, a high-pressure circulating water supply circuit flow regulating valve 254, and a high-pressure circulating water supply circuit flow meter 255, and the high-pressure circulating water return circuit 252 of the exhaust section is equipped with a high-pressure circulating water return circuit stop valve 256.

[0048] The pressure of the high-pressure circulating water source 20 is 4 MPa-6 MPa, preferably 5 MPa. The jacketed cooling water jacket is existing technology, and for details, please refer to the applicant's existing patent application.

[0049] The low-pressure water spray system 300 includes a low-pressure water spray supply main and several parallel low-pressure water spray system branches 340. The inlet of the low-pressure water spray supply main is connected to the low-pressure water spray source 30, and the inlets of the several parallel low-pressure water spray system branches 340 are all connected to the outlet of the low-pressure water spray supply main. The outlet of each low-pressure water spray system branch 340 is connected to a water spray ring of the exhaust section 3.

[0050] Preferably, along the water supply direction of the low-pressure water source 30, a low-pressure water supply ball valve 310, a low-pressure water supply pressure measuring point 320, and a low-pressure water supply temperature measuring point 330 are sequentially arranged on the low-pressure water supply main. A pressure gauge and a thermometer are respectively installed on the low-pressure water supply pressure measuring point 320 and the low-pressure water supply temperature measuring point 330.

[0051] Preferably, along the water supply direction of the low-pressure water source 30, each low-pressure water system branch 340 is sequentially equipped with a low-pressure water system shut-off valve 341, a low-pressure water system flow meter 342, and a low-pressure water system flow regulating valve 343, and the outlet of each low-pressure water system branch 340 is connected to a water spray ring 344 of the exhaust section 3.

[0052] The pressure of the low-pressure water source 30 is 2.5 MPa-3 MPa, preferably 2.8 MPa. The water spray ring is existing technology, and for details, please refer to the applicant's existing patent application.

[0053] The alcohol supply system 400 includes an alcohol supply path, the inlet of which is connected to the alcohol source 40 and the outlet of which is connected to the gas generator 2. Along the flow direction of the alcohol supplied from the alcohol source 40, the alcohol supply path is sequentially equipped with an alcohol supply system first solenoid valve 410, an alcohol supply system pressure regulating valve 420, an alcohol supply system flow regulating valve 430, an alcohol supply system second solenoid valve 440, and an alcohol supply system check valve 450.

[0054] Preferably, along the flow direction of the alcohol supplied from the alcohol source 40, a first filter 460 and a second filter 470 of the alcohol supply system are sequentially arranged between the pressure regulating valve 420 and the flow regulating valve 430 of the alcohol supply system.

[0055] Preferably, along the flow direction of the alcohol supplied by the alcohol source 40, an alcohol supply system flow meter 480 is provided between the alcohol supply system flow regulating valve 430 and the alcohol supply system second solenoid valve 440 on the alcohol supply line.

[0056] The liquid oxygen and nitrogen supply system includes a nitrogen supply main line, a liquid oxygen filling line 520, a liquid oxygen supply line 530, a liquid oxygen pressurization line 540, and a nitrogen venting line 560. The inlet of the nitrogen supply main line is connected to the nitrogen source 50. The liquid oxygen filling line 520, the liquid oxygen pressurization line 540, and the nitrogen venting line 560 are arranged in parallel, and their inlets are all connected to the outlet of the nitrogen supply main line. The outlet of the liquid oxygen filling line 520 is connected to the inlet of the liquid oxygen source 60. The inlet of the liquid oxygen supply line 530 is connected to the outlet of the liquid oxygen source 60, and its outlet is connected to the gas generator 2. The outlet of the liquid oxygen pressurization line 540 is connected to the liquid oxygen supply line 530. The nitrogen venting line 560 is connected to the atmosphere.

[0057] Preferably, along the flow direction of nitrogen supplied by the nitrogen source 50, a liquid oxygen nitrogen supply system pressure measuring point 570 and a liquid oxygen nitrogen supply system shut-off valve 510 are sequentially arranged on the nitrogen supply main, and a pressure gauge is installed on the liquid oxygen nitrogen supply system pressure measuring point 570.

[0058] Preferably, along the flow direction of nitrogen supplied by the nitrogen source 50, the liquid oxygen filling path 520 is sequentially provided with a liquid oxygen filling path filter 521, a liquid oxygen filling path shut-off valve 522, and a liquid oxygen filling path regulating valve 523.

[0059] Preferably, a liquid oxygen filling circuit pressure measuring point 524 is provided between the liquid oxygen filling circuit shut-off valve 522 and the liquid oxygen filling circuit regulating valve 523 on the liquid oxygen filling circuit 520, and a pressure gauge is provided on the liquid oxygen filling circuit pressure measuring point 524.

[0060] Preferably, along the flow direction of oxygen supply from the liquid oxygen source 60, the liquid oxygen supply path 530 is sequentially provided with a liquid oxygen supply path filter 531, a liquid oxygen supply path flow meter 532, a liquid oxygen supply path solenoid valve 533, and a liquid oxygen supply path regulating valve 534.

[0061] Preferably, a liquid oxygen supply line pressure measuring point 535 is provided between the liquid oxygen supply line filter 531 and the liquid oxygen supply line flow meter 532 on the liquid oxygen supply line 530, and a pressure gauge is provided on the liquid oxygen supply line pressure measuring point 535.

[0062] Preferably, along the flow direction of nitrogen supplied by the nitrogen source 50, the liquid oxygen pressurization path 540 is sequentially provided with a liquid oxygen pressurization path filter 541, a liquid oxygen pressurization path first shut-off valve 542, a liquid oxygen pressurization path second shut-off valve 543, a liquid oxygen pressurization path regulating valve 544, and a liquid oxygen pressurization path one-way valve 545. The outlet of the liquid oxygen pressurization path 540 is connected to the liquid oxygen supply path 530 after the liquid oxygen supply path regulating valve 534. A liquid oxygen pressurization path pressure measuring point 546 is provided between the liquid oxygen pressurization path first shut-off valve 542 and the liquid oxygen pressurization path second shut-off valve 543 on the liquid oxygen pressurization path 540, and a pressure gauge is provided on the liquid oxygen pressurization path pressure measuring point 546.

[0063] Preferably, the liquid oxygen-nitrogen supply system includes a liquid oxygen pressurization branch 547. The inlet of the liquid oxygen pressurization branch 547 is connected to the liquid oxygen pressurization line 540 between the liquid oxygen pressurization line pressure measuring point 546 and the liquid oxygen pressurization line second shut-off valve 543, and the outlet is connected to the liquid oxygen supply line 530 between the liquid oxygen supply line pressure measuring point 535 and the liquid oxygen supply line flow meter 532. Along the flow direction of nitrogen supplied by the nitrogen source 50, a liquid oxygen pressurization branch regulating valve 548 and a liquid oxygen pressurization branch check valve 549 are sequentially arranged on the liquid oxygen pressurization branch 547.

[0064] Preferably, the liquid oxygen-nitrogen supply system includes a liquid oxygen venting path 550. The inlet of the liquid oxygen venting path 550 is connected to the liquid oxygen supply path 530 between the liquid oxygen supply path solenoid valve 533 and the liquid oxygen supply path regulating valve 534, and the outlet is connected to the venting tank 553. Along the flow direction of oxygen supplied by the liquid oxygen source 60, a liquid oxygen venting path regulating valve 551 and a liquid oxygen venting path check valve 552 are sequentially arranged on the liquid oxygen venting path 550.

[0065] Preferably, along the flow direction of nitrogen supplied by the nitrogen source 50, a nitrogen venting path filter 561, a nitrogen venting path shut-off valve 562, and a nitrogen venting path regulating valve 563 are sequentially arranged on the nitrogen venting path 560; a nitrogen venting path pressure measuring point 564 is arranged between the nitrogen venting path shut-off valve 562 and the nitrogen venting path regulating valve 563 on the nitrogen venting path 560, and a pressure gauge is installed on the nitrogen venting path pressure measuring point 564.

[0066] The igniter kerosene supply source 70, gas supply system 100, high-pressure water supply system 200, low-pressure water spray system 300, alcohol supply system 400, liquid oxygen and nitrogen supply system 500 and igniter kerosene supply source 70 are located in equipment room 6, and the test section 1, gas generator 2, exhaust section 3 and igniter 700 are located in test room 7.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gas heater test bench, characterized in that: Includes test section, gas generator, exhaust section, exhaust pipeline, silencer tower, medium-pressure gas source, high-pressure circulating water source, low-pressure spray water source, alcohol source, nitrogen source, liquid oxygen source, kerosene supply source and igniter. The test section is equipped with the workpiece to be tested. The gas generator is connected to the inlet of the test section, the exhaust section is connected to the outlet of the test section, and the igniter is installed inside the gas generator. The exhaust section outlet is connected to the silencer tower via an exhaust pipe; The medium-pressure gas source is connected to the gas generator and igniter respectively through the gas supply system; The high-pressure circulating water source is connected to the test section, the gas generator, and the exhaust section respectively through the high-pressure water supply system; The low-pressure water source is connected to the exhaust section through the low-pressure water spray system; The alcohol source is connected to the gas generator through an alcohol supply system; The nitrogen gas source and liquid oxygen source are connected to the gas generator through a liquid oxygen and nitrogen supply system; The kerosene supply to the igniter is connected to the igniter; The high-pressure water supply system includes a high-pressure water supply main circuit and a parallel high-pressure circulating water circuit for the gas generator, a high-pressure circulating water circuit for the test section, and a high-pressure circulating water circuit for the exhaust section. The inlet of the high-pressure water supply main is connected to the high-pressure circulating water source. The inlets of the parallel high-pressure circulating water circuit of the gas generator, the high-pressure circulating water circuit of the test section, and the high-pressure circulating water circuit of the exhaust section are all connected to the outlet of the high-pressure water supply main. The high-pressure circulating water circuit of the gas generator, the high-pressure circulating water circuit of the test section, and the high-pressure circulating water circuit of the exhaust section are respectively connected to the jacketed cooling water jacket of the test section, the gas generator, and the exhaust section. The high-pressure circulating water circuit of the gas generator includes a high-pressure circulating water supply circuit and a high-pressure circulating water return circuit. The inlet of the high-pressure circulating water supply circuit is connected to the outlet of the high-pressure water supply main circuit, and the outlet is connected to the inlet of the jacketed cooling water jacket of the gas generator. The inlet of the high-pressure circulating water return circuit is connected to the outlet of the jacketed cooling water jacket of the gas generator, and the outlet is connected to the circulating water pool. The high-pressure water supply system includes a high-pressure circulating water circuit for the igniter, which includes a supply circuit and a return circuit. The inlet of the supply circuit is connected to the outlet of the high-pressure circulating water supply circuit for the gas generator, and the outlet is connected to the inlet of the jacketed cooling water jacket of the igniter. The inlet of the return circuit is connected to the outlet of the jacketed cooling water jacket of the igniter, and the outlet is connected to the return circuit of the high-pressure circulating water for the gas generator. The low-pressure water spray system includes a low-pressure water spray main and several parallel low-pressure water spray system branches. The inlet of the low-pressure water spray main is connected to the low-pressure water source, and the inlets of the several parallel low-pressure water spray system branches are all connected to the outlet of the low-pressure water spray main. The outlet of each low-pressure water spray system branch is connected to a water spray ring in the exhaust section.

2. The test bench according to claim 1, characterized in that: The gas supply system includes a main gas supply line, the inlet of which is connected to a medium-pressure gas source. Along the gas flow direction of the medium-pressure gas source, the main gas supply line is sequentially equipped with a gas supply system shut-off valve, a gas supply system ball valve, a gas supply system pressure regulating valve, and a gas supply system safety valve. After the safety valve, parallel gas supply lines for gas heaters and igniters are provided. Both parallel gas supply lines for gas heaters and igniters are connected to the main gas supply line, and their outlets are connected to the gas generator and igniter, respectively.

3. The test bench according to claim 2, characterized in that: A gas supply nozzle for the gas heater is installed on the gas supply line of the gas heater; The internal flow path of the gas supply nozzle of the gas heater is converging. An igniter gas supply shut-off valve is installed on the igniter gas supply line.

4. The test bench according to claim 1, characterized in that: The alcohol supply system includes an alcohol supply line, the inlet of which is connected to an alcohol source and the outlet of which is connected to a gas generator. Along the flow direction of the alcohol supplied from the alcohol source, the alcohol supply line is sequentially equipped with an alcohol supply system first solenoid valve, an alcohol supply system pressure regulating valve, an alcohol supply system flow regulating valve, an alcohol supply system second solenoid valve, and an alcohol supply system check valve.

5. The test bench according to claim 1, characterized in that: The liquid oxygen and nitrogen supply system includes a nitrogen supply main line, a liquid oxygen filling line, a liquid oxygen supply line, a liquid oxygen pressurization line, and a nitrogen venting line. The nitrogen supply main inlet is connected to the nitrogen source; The liquid oxygen filling line, liquid oxygen pressurization line and nitrogen venting line are set in parallel and the inlets of all of them are connected to the outlet of the main nitrogen supply line. The outlet of the liquid oxygen filling path is connected to the inlet of the liquid oxygen source; The inlet of the liquid oxygen supply line is connected to the outlet of the liquid oxygen source, and the outlet is connected to the gas generator. The outlet of the liquid oxygen pressurization circuit is connected to the liquid oxygen supply circuit; The nitrogen venting path is connected to the atmosphere.

6. The test bench according to claim 1, characterized in that: The igniter kerosene supply source, gas supply system, high-pressure water supply system, low-pressure water spray system, alcohol supply system, liquid oxygen and nitrogen supply system, and igniter kerosene supply source are located in the equipment room and test section. The gas generator, exhaust section, and igniter are located in the test room.

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