Gas supply system for test ignition of engine assembly

Abstract

A gas supply system for engine assembly test ignition comprises at least two gas cylinder sets arranged for gas of each gas source and used for gas supply in a test and pressure supplement and regulation in the gas supply process respectively; the gas transmission pipeline comprises a gas outlet collecting pipeline of all the gas cylinders in one gas cylinder group, a gas conveying main pipe of all the gas cylinder groups of the same gas, and a gas discharging pipeline arranged on the gas conveying main pipe; the deflation pipeline is used for deflating the gas conveying main pipe when system pressure regulation or a test is finished; a control switch electromagnetic valve for regulating pressure is arranged on a gas outlet collecting pipeline of each gas cylinder group; a pressure sensor and a conveying control electromagnetic valve are arranged on the conveying gas main pipe; an electromagnetic valve for deflating is arranged on the deflating pipeline; the electromagnetic valves and the pressure sensors are all connected to a remote control device and used for conducting remote control operation on gas supply, pressure supplementing and pressure adjusting of gas. According to the device, remote control operation is realized, the efficiency is improved, and the risk of manual operation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of liquid rocket engine technology, and in particular to an oxygen and methane gas supply system for experimental ignition of rocket engine components. Background Technology

[0002] In the assembly testing of liquid oxygen / methane liquid rocket engines, oxygen and methane are typically required as the starting gas source for ignition. Currently, the oxygen and methane supply system for the assembly ignition of liquid oxygen / methane liquid rocket engines on the test stand is manually operated on-site. During the assembly ignition test of the engine, each test typically involves 10 to 50 ignition tests under different operating conditions and pressures. When the maximum supply pressure of the gas cylinder group in the supply system is lower than the required value for a certain test, it is necessary to use gas cylinders containing high-pressure gas from other cylinder groups to replenish and regulate the pressure of the supply system. This operation involves manually opening valves and adjusting pressure on-site. After the pressure adjustment is completed, the next round of ignition tests can be conducted.

[0003] Because each test involves a large number of operations, the gas supply system needs to be manually replenished and its pressure adjusted multiple times. These repeated manual operations result in poor continuity and long testing time, which seriously affects the progress of the test. Moreover, this kind of on-site manual operation also poses a great risk. Summary of the Invention

[0004] To address the existing problems, this disclosure provides a gas supply system for test ignition of engine assembly, which can remotely control the supply and pressure regulation of test gas sources such as oxygen and methane.

[0005] The system specifically includes:

[0006] Gas cylinder group: At least two gas cylinder groups are set up for each type of gas source, and each gas cylinder group includes several gas cylinders; one gas cylinder group is used for gas supply during engine assembly testing, and the other gas cylinder group is used for pressure replenishment and regulation during the gas supply process;

[0007] The gas transmission pipeline includes: a gas outlet collection pipeline for all gas cylinders in a gas cylinder group, a main gas supply pipeline for all gas cylinder groups of the same gas, and a venting pipeline provided on the main gas supply pipeline; the venting pipeline is used for venting the main gas supply pipeline during the pressure regulation process of the gas supply system or at the end of the test.

[0008] Each gas cylinder group is equipped with a pressure regulating control solenoid valve on its outlet gas collection pipe; a pressure sensor and a main gas delivery pipe control solenoid valve are installed on the main gas delivery pipe; and a venting solenoid valve is installed on the venting pipe.

[0009] The pressure regulating control switch solenoid valve, pressure sensor, delivery gas main control solenoid valve and gas discharge solenoid valve are connected to a remote control device for remote control operation of the gas supply and pressure regulating of the gas source gas.

[0010] Further, the gas source gas includes oxygen and methane.

[0011] Further, the delivery gas main of the oxygen includes a copper straight pipe section for blocking the flame combustion to the oxygen cylinder when the assembly test occurs explosion or combustion.

[0012] Further, the pressure sensor on the delivery gas main, the pressure regulating control switch solenoid valve on the gas outlet manifold of each gas cylinder group of the same gas, the delivery gas main control solenoid valve and the gas discharge solenoid valve are connected in a chain control to ensure that the pressure of the delivery gas main is maintained at a set value.

[0013] Further, each gas cylinder outlet is provided with a manual switch device for manually controlling the opening and closing of the gas cylinder.

[0014] Further, the delivery gas main is provided with a check valve for preventing the reverse flow of gas back to the gas cylinder to cause danger during the assembly test.

[0015] Further, the delivery gas main is provided with a filter device for filtering the excess in the gas supply system pipeline.

[0016] Further, the delivery gas main is provided with a field pressure gauge for the operator to monitor the pressure of the oxygen or methane on site.

[0017] Further, the system further includes a flow limiting device arranged at the gas source gas inlet of the engine assembly for limiting the flow of oxygen into the oxygen cavity of the engine assembly to ensure the success rate of ignition.

[0018] Further, the flow limiting device uses a flow limiting orifice plate or a gas regulating valve.

[0019] Compared with the prior art, the oxygen and methane gas supply system for the liquid oxygen / methane liquid rocket engine test stand assembly test is optimized and improved, the on-site manual operation is changed to online remote control operation, the time cost for cylinder gas supply and pressure regulating is shortened, the time and labor cost is saved, the test speed is improved, and the risk of on-site manual operation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description of exemplary embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which like reference characters refer to the like parts throughout the different views.

[0021] Figure 1 System structure diagram according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0022] Preferred embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure is more thoroughly and completely conveyed to those skilled in the art, and the scope of the present disclosure is fully conveyed to those skilled in the art.

[0023] The present disclosure provides a gas supply system for engine assembly test ignition. According to an exemplary embodiment of the present disclosure, as shown in the accompanying Figure 1 The present disclosure provides a gas supply system for rocket engine assembly test ignition. According to an exemplary embodiment of the present disclosure, as shown in the accompanying

[0024] Two oxygen cylinder groups and two methane gas cylinder groups, each cylinder group is composed of multiple cylinders according to the demand of the amount of use;

[0025] A pressure regulating control switch electromagnetic valve is provided on the collection pipeline at the outlet of each cylinder group, a pressure sensor, a delivery gas control electromagnetic valve are provided on the delivery gas main pipe, and a gas discharge pipeline with an electromagnetic valve is provided on the delivery gas main pipe;

[0026] The pressure regulating electromagnetic valve, the gas discharge electromagnetic valve, the delivery gas main pipe control electromagnetic valve, and the pressure sensor are connected to each other and connected to the remote control device system, and the gas supply system for oxygen and methane gas is remotely controlled.

[0027] In the figure, the engine assembly M; the gas supply system detailed composition includes:

[0028] (1) Oxygen cylinder group O1; Oxygen cylinder group O2; Methane gas cylinder group J1; Methane gas cylinder group J2;

[0029] Oxygen gas supply remote control system H1; Methane gas supply remote control system H2;

[0030] Oxygen cylinder group O1 collection pipeline a1; Oxygen cylinder group O2 collection pipeline a2; Oxygen delivery gas main pipe a3; Oxygen delivery gas main pipe gas discharge pipe a4;

[0031] Methane gas cylinder group J1 collection pipeline b1; Methane gas cylinder group J2 collection pipeline b2; Methane delivery gas main pipe b3; Methane delivery gas main pipe gas discharge pipe b4;

[0032] Oxygen cylinder group O1 pressure regulating control electromagnetic valve C1; Oxygen cylinder group O2 pressure regulating control electromagnetic valve C2; Oxygen delivery gas main pipe control electromagnetic valve C3; Oxygen delivery gas main pipe gas discharge electromagnetic valve C4;

[0033] Methane gas cylinder group J1 pressure regulating control solenoid valve R1; methane gas cylinder group J2 pressure regulating control solenoid valve R2; methane delivery gas main control solenoid valve R3; methane delivery gas main vent solenoid valve R4;

[0034] Oxygen delivery gas main pressure sensor P1; methane delivery gas main pressure sensor P3;

[0035] (2) As preferred, further comprising:

[0036] Oxygen cylinder group cylinder port hand valve A1, A2....An; methane cylinder group cylinder port hand valve B1, B2....Bn;

[0037] Assembly oxygen inlet orifice plate K1; assembly methane inlet orifice plate E1;

[0038] Oxygen delivery gas main field pressure gauge P2; methane delivery gas main field pressure gauge P4; oxygen delivery gas main check valve D1; methane delivery gas main check valve D2;

[0039] Oxygen delivery gas main filter G1; methane delivery gas main filter G2;

[0040] Oxygen delivery gas main copper straight pipe section T1;

[0041] The functions of the above-mentioned devices and pipes are:

[0042] Oxygen cylinder group O1: according to the demand for the amount, the cylinder group is composed of 1, 2, 3....n oxygen cylinders, as the engine assembly test oxygen supply cylinder group.

[0043] Oxygen cylinder group O2: according to the demand for the amount, the cylinder group is composed of 1, 2, 3....n oxygen cylinders, as the engine assembly test pressure regulating cylinder group.

[0044] Methane gas cylinder group J1: according to the demand for the amount, the cylinder group is composed of 1, 2, 3....n oxygen cylinders, as the engine assembly test oxygen supply cylinder group.

[0045] Oxygen cylinder group O2: according to the demand for the amount, the cylinder group is composed of 1, 2, 3....n oxygen cylinders, as the engine assembly test pressure regulating cylinder group.

[0046] Oxygen gas supply remote control system H1: used for the remote control system between C1, C2, C3, C4, P1 in the oxygen gas supply system.

[0047] Methane gas supply remote control system H2: a remote control system for the mutual correlation between R1, R2, R3, R4 and P3 in the methane gas supply system.

[0048] Engine assembly M: an assembly on a liquid oxygen / methane liquid rocket engine, the assembly being provided with an igniter, and oxygen / methane gas being delivered to the assembly through the gas supply system to achieve ignition of the medium through the igniter.

[0049] Oxygen cylinder group cylinder port hand valve A1, A2...An: an outlet hand valve of 1, 2, 3...n oxygen cylinders in the oxygen cylinder group, used to control the opening and closing of the oxygen cylinder.

[0050] Methane cylinder group cylinder port hand valve B1, B2...Bn: an outlet hand valve of 1, 2, 3...n methane cylinders in the methane cylinder group, used to control the opening and closing of the methane cylinder.

[0051] Oxygen cylinder group O1 pressure regulating control solenoid valve C1: used for controlling the oxygen supply for engine assembly testing, and the solenoid valve makes the switching action faster and ensures safety and timeliness.

[0052] Oxygen cylinder group O2 pressure regulating control solenoid valve C2: a control solenoid valve for pressure compensation and regulation of the oxygen supply for engine assembly testing, which makes the switching action faster and ensures the safety and timeliness of the gas supply system.

[0053] Oxygen delivery gas main control solenoid valve C3: a switching control solenoid valve for oxygen entering the oxygen cavity of the engine assembly in the oxygen supply system.

[0054] Oxygen delivery gas main venting solenoid valve C4: a solenoid valve for venting the oxygen delivery gas main during pressure regulation and after the test is completed.

[0055] Methane cylinder group J1 pressure regulating control solenoid valve R1: a solenoid valve for controlling the methane gas supply for engine assembly testing, which makes the switching action faster and ensures safety and responsiveness.

[0056] Methane cylinder group J2 pressure regulating control solenoid valve R2: a control solenoid valve for pressure compensation and regulation of the methane gas supply for engine assembly testing, which makes the switching action faster and ensures safety and responsiveness.

[0057] Methane delivery gas main control solenoid valve R3: a switching control solenoid valve for methane gas entering the methane cavity of the engine assembly in the methane gas supply system.

[0058] Methane delivery gas main vent solenoid valve R4: used for methane gas supply system pressure regulating process and after the test is completed, the methane delivery gas main vent solenoid valve.

[0059] Assembly oxygen inlet orifice plate K1: used for flow limiting of oxygen entering the engine assembly oxygen chamber to ensure the success rate of ignition.

[0060] Assembly methane inlet orifice plate E1: used for flow limiting of methane gas entering the engine assembly methane chamber to ensure the success rate of ignition.

[0061] Oxygen delivery gas main pressure sensor P1: used for monitoring the pressure of the oxygen delivery gas main after the oxygen gas supply system is pressure regulated, P1 is interlocked with C1, C2, C3, C4 valves to realize online pressure regulation and ignition test of oxygen.

[0062] Oxygen delivery gas main site pressure gauge P2: a pressure gauge for on-site pressure measurement of the oxygen gas supply system, facilitating on-site monitoring of oxygen pressure by operating personnel.

[0063] Methane delivery gas main pressure sensor P3: used for monitoring the pressure of the methane delivery gas main after the methane gas supply system is pressure regulated, P3 is interlocked with R1, R2, R3, R4 valves to realize online pressure regulation and ignition test of methane gas.

[0064] Methane delivery gas main site pressure gauge P4: a pressure gauge for on-site pressure measurement of the methane gas supply system, facilitating on-site monitoring of methane pressure by operating personnel.

[0065] Oxygen delivery gas main check valve D1: used to prevent the risk of gas reverse flow back to the oxygen cylinder due to reverse pressure of the assembly during assembly testing.

[0066] Methane delivery gas main check valve D2: used to prevent the risk of gas reverse flow back to the methane cylinder due to reverse pressure of the assembly during assembly testing.

[0067] Oxygen delivery gas main filter G1: used to filter excess material in the oxygen gas supply system pipeline.

[0068] Methane delivery gas main filter G2: used to filter excess material in the methane gas supply system pipeline.

[0069] Oxygen delivery gas main copper straight pipe section T1: oxygen is a combustion aid, the pipeline material of the oxygen gas supply system is stainless steel, if the assembly test has a blast or combustion, under the action of the oxygen combustion aid, the stainless steel pipeline will burn, and if it burns to the oxygen cylinder group, there will be a risk of explosion. Therefore, a copper straight pipe section is provided at the inlet pipeline of the oxygen chamber of the assembly to block the combustion of fire.

[0070] Oxygen cylinder group O1 collection pipeline a1: the gas collection pipeline of each oxygen cylinder in the oxygen cylinder group.

[0071] Oxygen cylinder group O2 collection pipeline a2: the gas collection pipeline of each oxygen cylinder in the oxygen cylinder group.

[0072] Oxygen delivery gas main pipeline a3: the main pipeline after the collection of the two oxygen cylinder groups in the oxygen gas supply system.

[0073] Oxygen delivery gas main pipeline a4: used for the oxygen delivery gas main pipeline during the pressure regulation process or at the end of the test.

[0074] Methane cylinder group J1 collection pipeline b1: the gas collection pipeline of each methane cylinder in the methane cylinder group.

[0075] Methane cylinder group J2 collection pipeline b2: the gas collection pipeline of each methane cylinder in the methane cylinder group.

[0076] Methane delivery gas main pipeline b3: the main pipeline after the collection of the two methane cylinder groups in the methane gas supply system.

[0077] Methane delivery gas main pipeline b4: used for the methane delivery gas main pipeline during the pressure regulation process or at the end of the test.

[0078] The oxygen and methane gas supply operation process for the rocket engine assembly test using the above system is as follows:

[0079] 1. The gas supply process and operation steps of the oxygen and methane gas supply system during the rocket engine assembly test.

[0080] (1) The oxygen gas supply process and operation steps of the oxygen gas supply system.

[0081] The oxygen cylinder group cylinder port hand valves A1, A2...An of the oxygen cylinder group O1 are all in the open state, when the oxygen pressure for the ignition test is X1, H1 is used to remotely and automatically control the oxygen gas supply system: remotely start to open C1, oxygen is delivered from O1 to a3 through a1, when the P1 monitoring pressure value reaches X1, C1 is automatically closed. When the P1 value exceeds X1 during the oxygen gas supply process, C4 is opened, and oxygen is discharged to the atmosphere through a4, and C4 is closed when P1 reaches X1.

[0082] (2) The methane gas supply process and operation steps of the methane gas supply system.

[0083] The methane gas cylinder group gas cylinder port hand valve B1, B2...Bn of the methane gas cylinder group J1 is in all open state, when the ignition test methane gas pressure is Y1 value, using H2 to methane gas supply system for remote automatic control: remote start to open R1, methane gas from J1 by b1 to b3, when P3 monitoring pressure value to Y1, interlock close R1. When the methane gas supply process P3 value exceeds Y1 value, open R4, oxygen by b4 atmospheric exhaust, when P3 reaches Y1, close R4.

[0084] (3) Rocket engine assembly test ignition of oxygen and methane gas supply after the ignition test operation steps.

[0085] When the oxygen and methane gas delivery gas total pipe supply is completed, using H1, H2 respectively simultaneously start to open C3, R3 valve, oxygen through D1, G1, T1, K1 by a3 to M oxygen cavity inlet; methane gas through D2, G2, E1 by b3 to M methane cavity inlet, then through M igniter ignition test.

[0086] (4) Rocket engine assembly test ignition after the operation steps.

[0087] Open C4, R4 valve respectively for delivery gas total pipe exhaust, when P1, P3 value is 0, interlock close C4, R4 valve.

[0088] 2. Rocket engine assembly test oxygen and methane gas supply system gas pressure, pressure regulating gas flow and operation steps.

[0089] (1) Oxygen supply system oxygen pressure, pressure regulating gas flow and operation steps.

[0090] Oxygen cylinder group O2 oxygen cylinder group gas cylinder port hand valve A1, A2...An is in all open state, the cylinder group has high pressure oxygen, when the ignition test oxygen pressure needs to be X2 value, and the maximum oxygen cylinder group O1 supply is only X1 value, X1 value is less than X2 value, therefore, the oxygen cylinder group O2 is used to oxygen supply system for pressure, pressure regulating, so that the pressure meets the requirements of X2. Using H1 to oxygen supply system for remote automatic control: remote start to open C1 first, P1 to pressure stable, close C1 and open C2 for pressure, pressure regulating, oxygen from O2 by a2 to a3, when P1 monitoring pressure value rises to X2, interlock close C2. When the oxygen supply process P1 value exceeds X2 value, open C4, oxygen by a4 atmospheric exhaust, when P1 reaches X2, close C4.

[0091] (2) Methane gas supply system methane gas pressure, pressure regulating gas flow and operation steps.

[0092] The gas cylinder group J2 is in the open state, and the gas cylinder group has high-pressure methane gas. When the ignition test methane gas pressure needs to be Y2 value, and the maximum gas supply of the methane gas cylinder group J1 is only Y1 value, Y1 value is less than Y2 value, so the methane gas cylinder group J2 is used to supplement and regulate the pressure of the methane gas supply system to meet the requirement of Y2. H2 is used to remotely and automatically control the methane gas supply system: remotely starting by opening R1, and when the pressure of P3 is stable, closing R1 and opening R2 to supplement and regulate the pressure, methane gas is transported from b2 to b3 of J2, and when the pressure value of P3 rises to Y2, R2 is closed in linkage. When the pressure value of P3 exceeds Y2 during the methane gas supply process, R4 is opened, and methane gas is discharged to the atmosphere through b4, and when P3 reaches Y2, R4 is closed.

[0093] (3) The ignition test operation steps of the oxygen and methane gas after the pressure supplement and regulation of the rocket engine assembly test.

[0094] After the pressure supplement and regulation of the oxygen and methane gas in the delivery gas main, H1 and H2 are used to simultaneously open C3 and R3 valves, oxygen is transported from a3 to the oxygen cavity inlet of M through D1, G1, T1 and K1, methane gas is transported from b3 to the methane cavity inlet of M through D2, G2 and E1, and then the ignition test is performed through the igniter in M.

[0095] (4) The operation steps after the ignition of the rocket engine assembly test.

[0096] C4 and R4 valves are opened respectively to discharge the delivery gas main, and when the values of P1 and P3 are 0, C4 and R4 valves are closed in linkage.

[0097] In this embodiment, oxygen and methane gas are used as the ignition medium of the liquid oxygen / liquid methane engine test assembly of the liquid rocket test stand, and the gas cylinder group is used as the gas source for the test; the solenoid valve is used as the control solenoid valve of the gas supply system, and the response time of the valve is faster; the copper straight pipe section is set to block the risk of fire burning in the oxygen delivery main; the flow regulating orifice plate is used as the flow regulating of the gas supply, and compared with the gas regulating valve, the process technology is simple and optimized, and the investment cost is lower.

[0098] In the actual implementation process, other gas combinations or gunpowder can be used instead of oxygen and methane gas as the ignition medium; or other types of test stands can be used with oxygen and methane gas as the ignition medium.

[0099] The gas source supply mode of the oxygen and methane gas supply system can be changed, such as using a larger high-pressure pressure container to fill oxygen and methane gas as the gas source.

[0100] The pipe valve, pressure sensor, remote control system and other devices in the system can be changed to realize different remote control functions.

[0101] The engine assembly test ignition gas supply system and method can be changed by changing the number of pipes, pipe size, pipe material, valve number, filter, gas cylinder group number, check valve, copper pipe section and other components.

[0102] The flow of oxygen and methane gas can be regulated by changing different types of flow restrictor or by using a gas regulating valve.

[0103] The engine assembly test ignition gas supply pressure parameter value and operation steps can be changed to meet other test effects.

[0104] As can be seen, the above technical solutions are only exemplary embodiments of the present application. For those skilled in the art, on the basis of the application of methods and principles disclosed in the present application, various types of improvements or modifications can be easily made, and are not limited to the schemes described in the above specific embodiments of the present application. Therefore, the above-described method is only preferred and does not have a limiting meaning.

Claims

1. A gas supply system for test firing of an engine assembly, characterized in that The utility model relates to a kind of gas supply system for engine assembly test, including: Gas cylinder group: at least two gas cylinder groups are arranged for each gas source gas, and a plurality of gas cylinders are included in each gas cylinder group;One gas cylinder group is used for gas supply in engine assembly test, and another gas cylinder group is used for pressure compensation during gas supply; Gas transmission pipeline, including: the gas outlet collection pipeline of all gas cylinders in one gas cylinder group, the delivery gas main pipe of all gas cylinder groups of same gas, and the gas release pipeline arranged on the delivery gas main pipe;The gas release pipeline is used for the gas release of delivery gas main pipe during gas supply system pressure compensation process or test end; Wherein, the gas outlet collection pipeline of each gas cylinder group is equipped with pressure compensation control switch solenoid valve;Delivery gas main pipe is equipped with pressure sensor, delivery gas main pipe control solenoid valve;Gas release pipeline is equipped with gas release solenoid valve; The pressure compensation control switch solenoid valve, pressure sensor, delivery gas main pipe control solenoid valve and gas release solenoid valve are all connected to remote control device, for remote control operation to gas source gas supply and pressure compensation.

2. The system of claim 1, wherein, The gas source gas includes: oxygen and methane.

3. The system of claim 2, wherein, The delivery gas main pipe of oxygen includes copper straight pipe section, for blocking flame combustion to oxygen cylinder when assembly test occurs blast or combustion.

4. The system of claim 1, wherein, Pressure sensor on delivery gas main pipe, pressure compensation control switch solenoid valve on the gas outlet collection pipeline of each gas cylinder group of same gas, delivery gas main pipe control solenoid valve and gas release solenoid valve are adopted interlocking control, to ensure that the pressure of delivery gas main pipe is maintained at set value.

5. The system of claim 1, wherein, Manual switch device is arranged at the outlet of each gas cylinder, for manually controlling the opening and closing of gas cylinder.

6. The system of claim 1, wherein, Each delivery gas main pipe is equipped with check valve, for preventing gas reverse flow back to gas cylinder during assembly test.

7. The system of claim 1, wherein, Each delivery gas main pipe is equipped with filter device, for filtering excess in gas supply system pipeline.

8. The system of claim 1, wherein, Delivery gas main pipe is equipped with on-site pressure gauge, for on-site monitoring oxygen or methane pressure by operator.

9. The system of any of claims 1-8, wherein, Further including: Flow limiting device arranged at the inlet of engine assembly gas source gas, for limiting the flow of oxygen entering oxygen cavity of engine assembly, to ensure the success rate of ignition.

10. The system of claim 1, wherein, The flow limiting device adopts flow limiting orifice plate or gas regulating valve.

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