CN108375475B - Helium supply and distribution system for engine gas injection test - Google Patents
Helium supply and distribution system for engine gas injection test Download PDFInfo
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- CN108375475B CN108375475B CN201810059715.2A CN201810059715A CN108375475B CN 108375475 B CN108375475 B CN 108375475B CN 201810059715 A CN201810059715 A CN 201810059715A CN 108375475 B CN108375475 B CN 108375475B
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- gas
- helium
- distribution system
- collecting pipe
- kerosene
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Testing Of Engines (AREA)
Abstract
The invention particularly relates to a helium supply and distribution system for an engine gas injection test, which solves the problem that the helium flow cannot be accurately controlled because no helium distribution system exists in the conventional engine propellant supply system. The gas distribution system comprises a plurality of helium bottles, a gas collecting pipe, a liquid oxygen gas distribution system and a kerosene gas distribution system; the outlet of the helium tank is connected into a gas collecting pipe through a stop valve; the liquid oxygen gas distribution system and the kerosene gas distribution system are connected into the gas collecting pipe and respectively comprise a stop valve, a filter, a pressure reducer, a first electromagnetic valve, a sonic orifice plate and a second electromagnetic valve which are sequentially arranged on the helium gas outlet pipe. The system can realize the accurate control of the gas injection quantity of helium in the liquid oxygen path and the kerosene path, has high gas injection response speed and is not influenced by the pressure change of the front pipe of the pump.
Description
Technical Field
The invention particularly relates to a helium supply and distribution system for an engine gas injection test.
Background
The existing propellant supply system of the liquid oxygen kerosene engine has larger pulsation, and experiments show that the injection of a small amount of helium has obvious inhibition effect on the pulsation; however, the existing engine propellant supply system has no helium gas distribution system, so that the helium gas flow cannot be accurately controlled, and if too much helium gas is injected in the gas distribution process, the turbo pump has the risk of cavitation erosion; if the amount of helium gas injected is too small, the pulsation suppression effect of the helium gas cannot be achieved. Therefore, in order to accurately control the helium flow, a set of gas distribution system for accurately and rapidly supplying helium is required to be established.
Disclosure of Invention
The invention aims to solve the problem that the helium flow cannot be accurately controlled due to the fact that a helium gas distribution system is not arranged in an existing engine propellant supply system, and provides a helium gas supply and distribution system for an engine gas injection test, which can realize accurate control of helium gas injection quantity of a liquid oxygen path and a kerosene path, is high in gas injection response speed and is not influenced by pressure change of a front pipe of a pump.
The technical scheme of the invention is as follows:
a helium supply and distribution system for an engine gas injection test comprises a plurality of helium bottles, a gas collecting pipe, a liquid oxygen distribution system and a kerosene distribution system; the outlet of the helium tank is connected into a gas collecting pipe through a stop valve; the liquid oxygen gas distribution system and the kerosene gas distribution system are connected into the gas collecting pipe and respectively comprise a stop valve, a filter, a pressure reducer, a first electromagnetic valve, a sonic orifice plate and a second electromagnetic valve which are sequentially arranged on the helium gas outlet pipe.
Further, a gas release valve is arranged between the pressure reducer and the first electromagnetic valve, and gas in the helium gas outlet pipe can be completely discharged.
Furthermore, the gas collecting pipe is also provided with a pressure gauge and a gas release valve, so that the pressure on the gas collecting pipe is monitored in real time, and the gas in the gas collecting pipe is emptied.
Further, the helium bottle is a 40L helium bottle.
Further, the pipe diameter of the gas collecting pipe is DN20, and the pressure grade is PN 230.
Furthermore, the pipe diameter of the helium gas outlet pipe is DN15, and the pressure grade is PN 16.
The invention has the advantages that:
1. the invention can realize the accurate control of the helium gas injection quantity of the liquid oxygen path and the kerosene path through the sonic orifice plate, and has high gas injection response speed.
2. The gas distribution system has the advantages of compact structure, convenient use and high precision, and is suitable for precise supply of small-flow helium gas in different occasions.
3. The invention meets the requirements of helium flow, stability and filling speed in the gas injection test of the engine by adjusting the pressure of the pressure reducer and selecting the aperture of the sonic orifice plate.
4. The system of the invention selects the sonic orifice plate as the flow limiting device, so that the flow is not influenced by the change of the back pressure of the outlet, and the continuous and stable supply of helium is ensured.
5. The electromagnetic valves are arranged at the front and the rear of the sound velocity pore plate in the system, so that pipelines at the front and the rear of the sound velocity pore plate are filled, and the filling speed of helium supply under micro flow is increased.
6. According to the invention, the air release valve is arranged between the pressure reducer and the first electromagnetic valve, so that the gas in the helium gas outlet pipe can be completely released.
Drawings
Fig. 1 is a schematic structural diagram of the gas distribution system of the present invention.
Reference numerals: the device comprises a 1-helium bottle, a 2-gas collecting pipe, a 3-liquid oxygen distribution system, a 4-kerosene distribution system, a 5-stop valve, a 6-filter, a 7-stop valve, an 8-pressure reducer, a 9-first electromagnetic valve, a 10-sonic orifice plate, a 11-second electromagnetic valve, a 12-air release valve, a 13-pressure gauge and a 14-air release valve.
Detailed Description
The technical scheme of the invention is clearly and completely described in the following with the accompanying drawings of the specification.
As shown in fig. 1, the helium supply and distribution system for the gas injection test of the engine comprises a plurality of helium bottles 1, a gas collecting pipe 2, a liquid oxygen distribution system 3 and a kerosene distribution system 4; the outlet of the helium tank 1 is connected into the gas collecting pipe 2 through a stop valve 5; the liquid oxygen gas distribution system 3 and the kerosene gas distribution system 4 are connected into the gas collecting pipe 2, and the liquid oxygen gas distribution system 3 and the kerosene gas distribution system 4 respectively comprise a stop valve 7, a filter 6, a pressure reducer 8, a first electromagnetic valve 9, a sonic orifice plate 10 and a second electromagnetic valve 11 which are sequentially arranged on a helium gas outlet pipe.
According to the invention, the air release valve 12 is also arranged between the pressure reducer 8 and the electromagnetic valve I9, so that the gas in the helium gas outlet pipe can be completely released.
The helium supply and distribution system for the gas injection test of the engine comprises two helium bottles 1, a gas collecting pipe 2, a liquid oxygen distribution system 3 and a kerosene distribution system 4; in order to simplify the system, the liquid oxygen gas distribution system 3 and the kerosene gas distribution system 4 are integrated on a gas distribution platform; the gas collecting pipe 2 is also provided with a pressure gauge 13 and a gas release valve 14, which are used for monitoring the pressure on the gas collecting pipe 2 in real time and evacuating the gas in the gas collecting pipe 2.
The system uses a common 40L helium bottle as a gas source, the pipe diameter of a used gas collecting pipe is DN20, and the pressure grade is PN 230; the pipe diameter of the helium gas outlet pipe is DN15, and the pressure grade is PN 16. A helium bottle 1 is connected to a gas collecting pipe 2 of a gas distribution table and is divided into two paths from the gas collecting pipe 2, wherein one path provides helium supply of a liquid oxygen path, and the other path provides helium supply of a kerosene path. Liquid oxygen and kerosene way principle are the same, explain for the example liquid oxygen way, and before gas that comes out from gas collecting pipe 2 arrived pressure reducer 8 after passing through stop valve 7 and filter 6, control the pressure of helium through pressure reducer 8, set up two solenoid valves behind pressure reducer 8, set up sound velocity orifice plate 10 in the middle of two solenoid valves.
The invention selects the sonic orifice plate 10 as a flow limiting device, so that the flow is not influenced by the change of the back pressure of the outlet. The sonic orifice plate 10 is calibrated through a mass flow meter before the test to obtain the accurate flow coefficient of the orifice plate, so that the accurate control of the helium flow is realized through the accurate control of the pressure behind the pressure reducer 8. The electromagnetic valves are arranged in front of and behind the sonic orifice plate 10, and the pipelines in front of and behind the sonic orifice plate 10 are filled firstly, so that the filling speed of helium supply under micro flow is increased.
The invention meets the requirements of helium flow, stability and filling speed in the gas injection test of the engine by adjusting the pressure of the pressure reducer 8 and selecting the aperture of the orifice plate.
Claims (4)
1. The utility model provides an engine gas injection test helium supply gas distribution system which characterized in that: the device is used for inhibiting the pulsation of a propellant supply system of an engine and comprises a plurality of helium bottles (1), a gas collecting pipe (2), a liquid oxygen gas distribution system (3) and a kerosene gas distribution system (4);
the outlet of the helium bottle (1) is connected into the gas collecting pipe (2) through a stop valve (5);
the liquid oxygen gas distribution system (3) and the kerosene gas distribution system (4) are both connected into the gas collecting pipe (2),
the liquid oxygen distribution system (3) and the kerosene distribution system (4) respectively comprise a stop valve (7), a filter (6), a pressure reducer (8), a first electromagnetic valve (9), a sonic orifice plate (10) and a second electromagnetic valve (11) which are sequentially arranged on a helium gas outlet pipe;
a deflation valve (12) is also arranged between the pressure reducer (8) and the first electromagnetic valve (9);
the gas collecting pipe (2) is also provided with a pressure gauge (13) and a gas release valve (14).
2. The engine gas injection test helium supply gas distribution system of claim 1, wherein: the helium tank (1) is a 40L helium tank.
3. The engine gas injection test helium supply gas distribution system of claim 2, wherein: the pipe diameter of the gas collecting pipe (2) is DN20, and the pressure grade is PN 230.
4. The engine gas injection test helium supply gas distribution system of claim 3, wherein: the pipe diameter of the helium gas outlet pipe is DN15, and the pressure grade is PN 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810059715.2A CN108375475B (en) | 2018-01-22 | 2018-01-22 | Helium supply and distribution system for engine gas injection test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810059715.2A CN108375475B (en) | 2018-01-22 | 2018-01-22 | Helium supply and distribution system for engine gas injection test |
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| Publication Number | Publication Date |
|---|---|
| CN108375475A CN108375475A (en) | 2018-08-07 |
| CN108375475B true CN108375475B (en) | 2020-12-11 |
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| CN201810059715.2A Active CN108375475B (en) | 2018-01-22 | 2018-01-22 | Helium supply and distribution system for engine gas injection test |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439591A (en) * | 2019-01-17 | 2020-07-24 | 北京润泽云成环保科技有限公司 | Pneumatic conveying pipeline gas distribution system |
| CN111810319B (en) * | 2020-07-07 | 2021-09-10 | 西安航天动力试验技术研究所 | Rocket engine low-frequency pulsation suppression device containing gas-liquid separation and discharge system |
| CN113188379A (en) * | 2021-05-14 | 2021-07-30 | 北京宇航系统工程研究所 | Low-temperature carrier rocket cabin section environment temperature control gas blowing system |
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| EP2710248A2 (en) * | 2011-05-17 | 2014-03-26 | Snecma | Power supply system and method for eliminating the pogo effect |
| CN105604738A (en) * | 2015-12-30 | 2016-05-25 | 西安航天动力试验技术研究所 | Liquid oxygen/kerosene engine test gas supply system |
| CN205618971U (en) * | 2015-12-31 | 2016-10-05 | 西安航天动力试验技术研究所 | Liquid oxygen kerosene engine ground test subcooling liquid oxygen supply system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748970B (en) * | 2015-03-31 | 2017-07-04 | 北京航空航天大学 | A kind of gas test system suitable for thrustor experiment |
| CN105909424A (en) * | 2016-04-12 | 2016-08-31 | 西北工业大学 | Propellant supply system for RBCC large regulating-ratio liquid-propellant rocket engine |
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- 2018-01-22 CN CN201810059715.2A patent/CN108375475B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2710248A2 (en) * | 2011-05-17 | 2014-03-26 | Snecma | Power supply system and method for eliminating the pogo effect |
| CN105604738A (en) * | 2015-12-30 | 2016-05-25 | 西安航天动力试验技术研究所 | Liquid oxygen/kerosene engine test gas supply system |
| CN205618971U (en) * | 2015-12-31 | 2016-10-05 | 西安航天动力试验技术研究所 | Liquid oxygen kerosene engine ground test subcooling liquid oxygen supply system |
Non-Patent Citations (1)
| Title |
|---|
| 国内外运载火箭POGO抑制技术研究进展;王小军 等;《中国科学:技术科学》;20141231;第44卷(第5期);第492-503页 * |
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| CN108375475A (en) | 2018-08-07 |
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