CN101782463A - Full-flow test bed hydrogen system - Google Patents
Full-flow test bed hydrogen system Download PDFInfo
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- CN101782463A CN101782463A CN200910076978A CN200910076978A CN101782463A CN 101782463 A CN101782463 A CN 101782463A CN 200910076978 A CN200910076978 A CN 200910076978A CN 200910076978 A CN200910076978 A CN 200910076978A CN 101782463 A CN101782463 A CN 101782463A
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Abstract
The invention discloses a design of a full-flow test bed hydrogen system, which can accurately control the flow of the hydrogen, and realizes the feed and cut-off of a hydrogen medium. The full-flow test bed supply system consists of a hydrogen compressor, a hydrogen bottle, a high-pressure hydrogen tank, a valve, a pressure reducer and a sonic nozzle. The full-flow test bed supply system can be divided into two parts: a main hydrogen path for supplying hydrogen for test pieces, and an ignition hydrogen path for providing hydrogen for an igniter. A nitrogen interface is designed in the hydrogen supply system; and a safety valve is designed at the rear of the pressure reducer in the hydrogen supply system. When the pressure reducer leaks or has an accident, the safety valve is opened for discharging the hydrogen in a low pressure pipeline. Therefore, the design of the hydrogen test system has high reliability and safety.
Description
[technical field]
The present invention relates to the design of liquid-propellant rocket engine test bed hydrogen system, relate in particular to the design of full flow afterburning cycle engine hydrogen supply system.
[background technology]
Development along with spationautics, the task of developing novel reusable rocket engine is urgent day by day, using hydrogen and oxygen to have advantages such as nontoxic, pollution-free, reusable as the full flow afterburning cycle engine of propellant, is one of novel spacecraft candidate of 21 century propulsion system.Compare with traditional afterburning cycle engine, the propellant of all flows of full flow afterburning cycle engine all enters pre-combustion chamber and burns, and wherein most oxygenant and a spot of fuel enter the oxygen enrichment pre-combustion chamber, and the burning back forms oxygen rich fuel gas; A large amount of fuel and a spot of oxygenant enter rich combustion pre-combustion chamber and carry out primary combustion, form rich combustion combustion gas; Behind the gas driven turbine of pre-combustion chamber outlet, spurt into the firing chamber with the form of gas.Use full flow afterburning round-robin engine that the combustion gas quality that drives turbine is increased, under the certain situation of turbine power, can reduce the temperature of turbine inlet combustion gas, help the design of turbine; Use oxygen rich fuel gas to drive the oxygen turbine, can reduce the seal request between oxygen turbine and the pump.
Gas-pneumatic insufflator is one of critical component of full flow engine, is high-temperature oxygen-enriched combustion gas and Fu Ran combustion gas though the full flow engine enters the firing chamber, carries out the character that normal temperature hydrogen and oxygen experimental study can disclose the ejector filler regularity.BJ University of Aeronautics ﹠ Astronautics since two thousand two, carry out the research of full flow afterburning cycle engine gordian technique, set up full flow afterburning cycle engine experiment table, explore this engine solution of key technology scheme, the development of high thrust, reusable rocket engine lays the first stone for future.
The design of hydrogen gas system is one of critical system of full-flow test bed construction, and mainly being provides the fuel of accurate flow for test parts and lighter, and accurately controls the opening and closing of hydrogen valve.
[summary of the invention]
The present invention has creatively proposed the design of full-flow test bed hydrogen system, can accurately control the flow of hydrogen and the accurately opening and closing of control hydrogen valve.The pilot system design has high reliability and security.
The design of full-flow test bed hydrogen system of the present invention is as described below.
Full-flow test bed hydrogen supply system is divided into two parts, and the one, main hydrogen road is the testpieces supply of hydrogen; Another road is igniting hydrogen road, for lighter provides hydrogen.
In the hydrogen supply system, design has the interface of nitrogen, and the one, be used for finishing after-blow and remove ducted remaining hydrogen in test; The 2nd, nitrogen is caused the pressure that decompressor is used to regulate the decompressor air cavity, control low pressure hydrogen pressure; The 3rd, before test, use the ducted air of nitrogen replacement.
For the consideration of safety factor, in the hydrogen supply system, design has safety valve behind the decompressor, and when decompressor occurred leaking or fortuitous event occurs, safety valve will be opened, the hydrogen in the low pressure pipeline of releasing; Design has earthing device in the Hydrogen Line, prevents the potential safety hazard that electrostatic accumulation causes.
[description of drawings]
Fig. 1 is full-flow test bed hydrogen system figure of the present invention.
[embodiment]
The present invention proposes full-flow test bed hydrogen gas system design first.Supply system can be divided into main hydrogen road and igniting hydrogen road, specifically is made up of hydrogen gas compressor, hydrogen cylinder, high pressure hydrogen tank, valve, decompressor and sonic nozzle; Design has pressure and temperature measurement mouth to be convenient to calculate pipeline medium flow in the supply system; Design has nitrogen blow-off and displacement interface, is used to blow down ducted remaining hydrogen, handles gas and replace ducted air for decompressor provides.
The hydrogen of in the hydrogen gas system 16 hydrogen cylinders being formed confluxes and is delivered to the mode of high pressure hydrogen storage tank, when the Hydrogen Vapor Pressure in the hydrogen cylinder is higher than pressure in the hydrogen gas tank, opens tee ball valve 1 hydrogen is delivered directly to hydrogen gas tank; When Hydrogen Vapor Pressure in the gas cylinder is low, adjust tee ball valve 1, the hydrogen process decompressor decompression with low-pressure section is stored in the pressure hydrogen gas tank, and the hydrogen pressure machine is compressed into high pressure hydrogen with low pressure hydrogen afterwards, is stored into high pressure hydrogen tank.
The hydrogen that high pressure hydrogen tank flows out divides two road directions to be delivered to testpieces, and one the tunnel is main hydrogen pipeline, and the pipe design diameter is 40mm, for testpieces provides hydrogen; One the tunnel is igniting hydrogen road, and pipe diameter is 15mm, for lighter provides hydrogen.
Hydrogen in the high pressure hydrogen tank is by filtrator 2 and high-pressure ball valve 3 laggard decompressor 4 and the some hydrogen decompressors 5 of becoming owner of; Main hydrogen Lu Jingzhu decompressor decompression back guarantees the pressure precision of setting in the flow range of design, enter pneumatic valve 6 and vortex shedding flow meter 9, before vortex shedding flow meter 9 inlets temperature sensor 7 and pressure transducer 8 are installed, so that the pressure and temperature of accurate measuring media calculates ducted flow.Hydrogen enters the full flow test bay behind the flowmeter, successively by pneumatic stopping valve 10, sonic nozzle 11, is connected to rich combustion pre-combustion chamber by 2 flexible pipes at last; Lighter enters pneumatic valve 12 with hydrogen after a hydrogen decompressor 5 decompressions, inlet point hydrogen mass flowmeter 13 then, enter the full flow test bay, the interior hydrogen of test bay is divided into three the tunnel and passes through sonic nozzle: be respectively the oxygen enrichment pre-combustion chamber of full flow, rich combustion pre-combustion chamber and main thrust chamber igniting hydrogen is provided.
Because hydrogen is the gas that certain risk is arranged, after acquiring a certain degree, its aerial volumetric concentration can explode, and for security consideration, design has safety valve 15 behind decompressor; Design in system has the nitrogen replacement interface, is used for using the ducted air of nitrogen replacement before test, uses hydrogen exchange nitrogen afterwards; Nitrogen blow-off's interface is used for that nitrogen can blow down ducted remaining hydrogen after off-test.
During test run, after definite upstream high pressure hydrogen tank and pipeline portions pressure are normal, open the hand valve 14 on the high pressure gas holder, ball valve 3, the preposition pneumatic valve 6 and 12 before the decompressor successively, and regulate the decompressor outlet and reach specified pressure, open at last at the pneumatic stopping valve of test cell and test; Break down and to close or can not close fully during for the pneumatic stopping valve test run of prevention test cell, behind decompressor, be provided with pneumatic valve 6 and 12.
Claims (6)
1. full-flow test bed hydrogen gas test system is made up of hydrogen gas compressor, hydrogen cylinder, high pressure hydrogen tank, valve, decompressor and sonic nozzle, it is characterized in that hydrogen gas system is divided into main hydrogen road and some hydrogen road, is respectively test parts and lighter provides hydrogen.
2. hydrogen gas test as claimed in claim 1 system, it is characterized in that: when the hydrogen cylinder internal pressure is higher than the hydrogen gas tank internal pressure, hydrogen directly can be delivered to hydrogen gas tank, when hydrogen cylinder pressure is lower than the hydrogen gas tank internal pressure, by the high pressure hydrogen tank of hydrogen gas compressor with the low pressure hydrogen compression.
3. hydrogen gas test as claimed in claim 1 or 2 system is characterized in that: manual ball valve is installed before decompressor, occur when unexpected, but the hand off sources of hydrogen improves security of system.
4. hydrogen gas test as claimed in claim 3 system is characterized in that: pneumatic ball valve is installed behind decompressor, can reduces the pressure loss of pipeline and improve the security of system performance.
5. as the described hydrogen gas test of the arbitrary claim of claim 1-4 system, it is characterized in that: igniting hydrogen road is divided into 3 the tunnel, is respectively the hydrogen that oxygen enrichment pre-combustion chamber, rich combustion pre-combustion chamber and thrust chamber provide igniting usefulness.
6. hydrogen gas test as claimed in claim 5 system is characterized in that: design has the manipulation gas interface of nitrogen blow-off's interface, nitrogen replacement interface and decompressor in the system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910076978A CN101782463A (en) | 2009-01-15 | 2009-01-15 | Full-flow test bed hydrogen system |
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| CN200910076978A CN101782463A (en) | 2009-01-15 | 2009-01-15 | Full-flow test bed hydrogen system |
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| CN101782463A true CN101782463A (en) | 2010-07-21 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411775A (en) * | 2013-07-22 | 2013-11-27 | 北京航空航天大学 | Fuel supplying system for liquid-propellant rocket engine test |
| CN104677439A (en) * | 2013-11-29 | 2015-06-03 | 清华大学 | Hydrogen gas flow rate detecting system and hydrogen gas flow rate detecting system |
| CN104727979A (en) * | 2015-04-03 | 2015-06-24 | 北京航空航天大学 | High pressure self-pressurization system for hybrid rocket engine test |
| CN104748970A (en) * | 2015-03-31 | 2015-07-01 | 北京航空航天大学 | Gas testing system suitable for tests of low-thrust engine |
| CN109630322A (en) * | 2019-01-17 | 2019-04-16 | 北京星际荣耀空间科技有限公司 | A kind of thrust chamber's test method |
| CN109707995A (en) * | 2019-01-09 | 2019-05-03 | 中国原子能科学研究院 | A kind of note hydrogen note argon skid-mounted system for sodium-cooled fast reactor |
| CN110146298A (en) * | 2019-04-08 | 2019-08-20 | 湖南科技大学 | Engine fuel system test device and method |
| CN111982556A (en) * | 2020-08-21 | 2020-11-24 | 应急管理部天津消防研究所 | Hydrogen energy automobile fire simulation and prevention and control experimental method and device |
| CN112555056A (en) * | 2020-12-02 | 2021-03-26 | 西安航天动力研究所 | Afterburning circulating liquid engine core system thermal test device and parameter coordination method |
| CN113236968A (en) * | 2021-04-22 | 2021-08-10 | 大连理工大学 | Pretreatment system and method for hydrogen cylinder detection |
| CN113375894A (en) * | 2021-06-07 | 2021-09-10 | 北京航空航天大学 | Water circulation cooling type hydrogen and temperature controllable air ground test system |
-
2009
- 2009-01-15 CN CN200910076978A patent/CN101782463A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411775B (en) * | 2013-07-22 | 2016-04-20 | 北京航空航天大学 | A kind of fuel system for liquid propellant rocket engine test |
| CN103411775A (en) * | 2013-07-22 | 2013-11-27 | 北京航空航天大学 | Fuel supplying system for liquid-propellant rocket engine test |
| CN104677439A (en) * | 2013-11-29 | 2015-06-03 | 清华大学 | Hydrogen gas flow rate detecting system and hydrogen gas flow rate detecting system |
| 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 |
| CN104748970A (en) * | 2015-03-31 | 2015-07-01 | 北京航空航天大学 | Gas testing system suitable for tests of low-thrust engine |
| CN104727979B (en) * | 2015-04-03 | 2016-08-31 | 北京航空航天大学 | Solid-liquid rocket test high pressure is from pressure charging system |
| CN104727979A (en) * | 2015-04-03 | 2015-06-24 | 北京航空航天大学 | High pressure self-pressurization system for hybrid rocket engine test |
| CN109707995A (en) * | 2019-01-09 | 2019-05-03 | 中国原子能科学研究院 | A kind of note hydrogen note argon skid-mounted system for sodium-cooled fast reactor |
| CN109630322A (en) * | 2019-01-17 | 2019-04-16 | 北京星际荣耀空间科技有限公司 | A kind of thrust chamber's test method |
| CN110146298A (en) * | 2019-04-08 | 2019-08-20 | 湖南科技大学 | Engine fuel system test device and method |
| CN111982556A (en) * | 2020-08-21 | 2020-11-24 | 应急管理部天津消防研究所 | Hydrogen energy automobile fire simulation and prevention and control experimental method and device |
| CN112555056A (en) * | 2020-12-02 | 2021-03-26 | 西安航天动力研究所 | Afterburning circulating liquid engine core system thermal test device and parameter coordination method |
| CN113236968A (en) * | 2021-04-22 | 2021-08-10 | 大连理工大学 | Pretreatment system and method for hydrogen cylinder detection |
| CN113375894A (en) * | 2021-06-07 | 2021-09-10 | 北京航空航天大学 | Water circulation cooling type hydrogen and temperature controllable air ground test system |
| CN113375894B (en) * | 2021-06-07 | 2022-06-24 | 北京航空航天大学 | Water circulation cooling type hydrogen and temperature controllable air ground test system |
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Open date: 20100721 |