CN109027398A - Ultralow temperature high pressure double spool linkage valve - Google Patents
Ultralow temperature high pressure double spool linkage valve Download PDFInfo
- Publication number
- CN109027398A CN109027398A CN201811091922.2A CN201811091922A CN109027398A CN 109027398 A CN109027398 A CN 109027398A CN 201811091922 A CN201811091922 A CN 201811091922A CN 109027398 A CN109027398 A CN 109027398A
- Authority
- CN
- China
- Prior art keywords
- valve
- high pressure
- temperature high
- ultralow temperature
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012856 packing Methods 0.000 claims abstract description 11
- 238000007664 blowing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 10
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1266—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being acted upon by the circulating fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a kind of ultralow temperature high pressure double spool linkage valves, comprising: actuation chamber component A and valve assembly B；Wherein, the actuation chamber component A includes bellows component, actuation cavity shell, packing seal and mandril；Wherein, the bellows component is set in the actuation cavity shell；One end of the mandril is connected with the bellows component；The packing seal is loaded between the bellows component and the mandril；The actuation cavity shell is connected with the valve assembly B.The invention enables valve flow resistance loss is small, there are enough operating lifes and reliable sealing performance.
Description
Technical field
The invention belongs to liquid-propellant rocket engine fluid control technology field more particularly to a kind of ultralow temperature high pressure double spools
Linkage valve.
Background technique
YF-90 oxyhydrogen engine participates in Science in Future in China as two stage motor of core in China's heavy launcher configuration
The space programs such as manned moon landing, space station and deep space exploration.The valve is located between high pressure hydrogen turbopump and thrust chamber hydrogen collector,
It is to realize that engine high pressure liquid hydrogen medium flows into the supply or the essential significant components of cutting function of thrust chamber.It is existing low
Unbearable up to low temperature liquid hydrogen (20K) medium of 39MPa of warm medium valve, operating life is short and sealing performance is weak, therefore
A kind of valve for being resistant to ultralow temperature, super-pressure need to be designed.
Summary of the invention
Technical problem solved by the present invention is having overcome the deficiencies of the prior art and provide a kind of ultralow temperature high pressure double spool
Linkage valve to valve light-weight design, and has enough operating lifes and reliable sealing performance.
The object of the invention is achieved by the following technical programs: a kind of ultralow temperature high pressure double spool linkage valve, comprising:
Actuation chamber component A and valve assembly B；Wherein, the actuation chamber component A includes bellows component, actuation cavity shell, packing seal
And mandril；Wherein, the bellows component is set in the actuation cavity shell；One end of the mandril and the bellows group
Part is connected；The packing seal is loaded between the bellows component and the mandril；The actuation cavity shell with it is described
Valve assembly B is connected.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the valve assembly B include main valve, spring, release valve,
Valve body and sleeve；Wherein, the actuation cavity shell is connected with the valve body；The main valve is set to the work
In gate housing, one end of the main valve can seal up the Single port of the valve body；The other end of the main valve with
The sleeve is connected；The sleeve is set in the valve body, and the sleeve is connected with the valve that releases；It is described
Spring pocket is set to the sleeve, and one end of the spring is mutually crimped with the sleeve, the other end of the spring and the valve
Shell mutually crimps；The other end of the mandril is in contact with the main valve；The valve that releases can seal up the valve
The outfall that shell opens up.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the actuation cavity shell includes outer housing and inner housing；Wherein,
Circulation passage is formed between the outer housing and the inner housing；The bellows component is set in the inner housing, and with
The inner housing is connected.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the valve body includes valve outer housing and valve inner casing
Body；Wherein, the valve outer housing is threadedly coupled with the outer housing；The valve outer housing is connected with valve inner housing.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the valve that releases includes releasing valve bar and releasing valve
Head；The main valve includes main valve bar and main valve head；The valve bar that releases is connected with the valve head that releases；It is described
Main valve bar is connected with the main valve head；The main valve bar be it is hollow, described one end for releasing valve bar is embedded at institute
State main valve bar；The main valve head can seal up the Single port of the valve body；The sleeve is sheathed on the main work
Door rod；The first connecting portion of the main valve bar, the second connecting portion for releasing valve bar are connected with the third of the sleeve
Portion is connected；The valve head that releases can seal up the outfall that the valve body opens up.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the outer housing offers blowing mouth.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the inner housing offers control mouth.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the side wall of the valve outer housing offers entrance.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the side wall of the sleeve offers the first hole.
In above-mentioned ultralow temperature high pressure double spool linkage valve, the side wall of the valve inner housing offers the second hole.
Compared with prior art, the present invention has the following advantages:
(1) present invention uses bellows component form in control chamber, controls valve action by high-pressure helium, improves valve
Door reliability.
(2) using being threadedly coupled between two housings of the invention, case weight mitigates significantly；
(3) primary flow path and pre-cooling are released road and gathered together by the present invention, and this two-bit triplet combined valve meets low
The application of warm engine system mesohigh worst cold case environment；
(4) metal sealing, which can satisfy, has good sealing effect to cryogenic media under high pressure.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of ultralow temperature high pressure double spool linkage valve provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the structural schematic diagram of ultralow temperature high pressure double spool linkage valve provided in an embodiment of the present invention.Such as Fig. 1 institute
Show, which includes actuation chamber component A and valve assembly B；Wherein,
Actuation chamber component A includes bellows component 1, actuation cavity shell 2, packing seal 3 and mandril 4；Wherein, bellows group
Part 1 is set in the actuation cavity shell 2；One end of mandril 4 is connected with bellows component 1；Packing seal 3 is loaded on ripple
Between tube assembly 1 and mandril 4；Actuation cavity shell 2 is connected with valve assembly B.When it is implemented, left end and the ripple of mandril 4
Tube assembly 1 is fixedly connected.
Valve assembly B includes main valve 5, spring 6, releases valve 7, valve body 8 and sleeve 9；Wherein, actuation cavity shell
2 are connected with valve body 8；Main valve 5 is set in valve body 8, and one end of main valve 5 can seal up valve body 8
Single port；The other end of main valve 5 is connected with sleeve 9；Sleeve 9 is set in valve body 8, sleeve 9 and releases valve 7
It is connected；Spring 6 is sheathed on sleeve 9, and one end of spring 6 is crimped with 9 phase of sleeve, the other end and the 8 phase pressure of valve body of spring 6
It connects；The other end of mandril 4 is in contact with main valve 5；The outfall 83 that valve body 8 opens up can be sealed up by releasing valve 7.
Actuation cavity shell 2 includes outer housing 21 and inner housing 22；Wherein, circulation is formed between outer housing 21 and inner housing 22
Channel；Bellows component 1 is set in inner housing 22, and is connected with inner housing 22.
Valve body 8 includes valve outer housing 81 and valve inner housing 82；Wherein, valve outer housing 81 and 21 spiral shell of outer housing
Line connection；Valve outer housing 81 is connected with valve inner housing 82.
Releasing valve 7 includes releasing valve bar 71 and releasing valve head 72；Main valve 5 includes main valve bar 51 and main valve
First 52；It releases valve bar 71 and is connected with valve head 72 is released；Main valve bar 51 is connected with main valve head 52；Main valve bar 51
Be it is hollow, the one end for releasing valve bar 71 is embedded at main valve bar 51；Sleeve 9 is sheathed on main valve bar 51；Main valve bar 51
First connecting portion 511, the second connecting portion 711 for releasing valve bar 71 are connected with the third interconnecting piece 91 of sleeve 9；Release valve
First 72 can seal up the outfall 83 that valve body 8 opens up.Main valve head 52 can seal up the left port of valve body 8.
As shown in Figure 1, outer housing 21, which offers, blows down mouth 211, inner housing 22 offers control mouth 212, valve outer housing
81 side wall offers entrance 811, and the side wall of sleeve 9 offers the first hole 92, and the side wall of valve inner housing 82 offers second
Hole 821.
Working principle: when engine is pre-chilled, state such as Fig. 1 institute of each component of ultralow temperature high pressure double spool linkage valve
Show, the elastic force of spring 6 moves downward sleeve 9, since sleeve 9, main valve 5 are fixedly connected with valve 7 is released, thus sleeve
9, it main valve 5 and releases valve 7 and moves downward, so that the main valve head 52 of main valve 5 blocks the left end of valve body 8
Mouthful so that actuation chamber component A and valve assembly B be it is not connected, pre- cold medium is flowed into from entrance 811, then passes through set
First hole 92 of cylinder 9 and the second hole 821 of valve inner housing 82 are flowed into the space in valve inner housing 82, then by letting out
83 discharge of outlet.
When engine start, from the control mouth 212 of inner housing 22 to the exocoel of bellows component 1 lead to high pressure (15~
Gas 23MPa) is controlled, high voltage control air pressure is compeled bellows component 1 and moved right, so that mandril 4 pushes the main work of main valve 5
Door head 52 is moved to outfall direction, since sleeve 9, main valve 5 are fixedly connected with valve 7 is released, thus sleeve 9, main valve 5
It moves to outfall direction with valve 7 is released, so that the valve head 72 that releases for releasing valve 7 blocks outfall 83, makes simultaneously
The left port for obtaining valve outer housing 81 is opened, and pre- cold medium enters 81 He of valve outer housing from the left port of valve outer housing 81
Then channel between valve inner housing 82 is discharged from the outlet of valve body 8.Since packing seal 3 is loaded on bellows group
Between part 1 and mandril 4, so, pre- cold medium will not enter bellows component 1, to effectively protect bellows component
1。
After engine enters main operating condition, control gas is withdrawn, and valve is in spring force, main valve medium differential pressure power and releases work
Primary flow path opening state is maintained under the collective effect of door medium power.In the entire main active section of engine, thrust chamber hydrogen valve main road
It is maintained open, releases road and remain off, release the low temperature seal that valve guarantees high pressure 39MPa.When the engine is off, medium pressure
Power is down to 2.5~3MPa, and the medium differential pressure power on spring force, main valve, which overcomes to release valve medium and push dynamic main valve, closes,
And open outfall, medium is discharged by outfall in valve chamber, and valve returns to initial assembled state.
Valve outer housing 81 is threadedly coupled with outer housing 21, and by reprocessing screw thread interface Assurance of Size general assembly interface position
It sets.
Bellows component 1 is first packed into actuation cavity shell 2 by actuation chamber component part A, and packing seal 3 and mandril 4 individually fill
With dynamic sealing performance test is carried out, after dynamic sealing leak rate is met the requirements, it is reloaded into actuation cavity shell 2.Wherein filler and ripple
Tube assembly 1 is static seal, is reciprocating dynamic sealing at mandril 4.Disc spring loaded packing dynamic sealing, mandril 4 and bellows component 1 are single
Solely assembly, it is whole again after assembling test is qualified to be packed into actuation cavity shell 2, realize movable sealing structure replaceability and testability.
Valve assembly part B main valve 5 and release valve 7 by screw composition linkage design, respectively with valve body 8 it
Between be threadedly coupled, only need an actuation chamber just to can be carried out control in this way and main valve 5 and release the on and off of valve 7.Due to
Valve overall dimensions are longer, and setting is dominated to releasing and secondary guiding is arranged at valve 7, by leading at two at main valve 5 in design
To valve seal-moving is to neutrality at raising two.
Embodiment described above is the present invention more preferably specific embodiment, and those skilled in the art is in this hair
The usual variations and alternatives carried out in bright technical proposal scope should be all included within the scope of the present invention.
Claims (10)
1. a kind of ultralow temperature high pressure double spool linkage valve, characterized by comprising: actuation chamber component A and valve assembly B；Its
In,
The actuation chamber component A includes bellows component (1), actuation cavity shell (2), packing seal (3) and mandril (4)；Wherein,
The bellows component (1) is set in the actuation cavity shell (2)；
One end of the mandril (4) is connected with the bellows component (1)；
The packing seal (3) is loaded between the bellows component (1) and the mandril (4)；
The actuation cavity shell (2) is connected with the valve assembly B.
2. ultralow temperature high pressure double spool linkage valve according to claim 1, it is characterised in that: the valve assembly B packet
It includes main valve (5), spring (6), release valve (7), valve body (8) and sleeve (9)；Wherein,
The actuation cavity shell (2) is connected with the valve body (8)；
The main valve (5) is set in the valve body (8), and one end of the main valve (5) can seal up the work
The Single port of gate housing (8)；
The other end of the main valve (5) is connected with the sleeve (9)；
The sleeve (9) is set in the valve body (8), and the sleeve (9) is connected with the valve (7) that releases；
The spring (6) is sheathed on the sleeve (9), and one end of the spring (6) is mutually crimped with the sleeve (9), the bullet
The other end of spring (6) is mutually crimped with the valve body (8)；
The other end of the mandril (4) is in contact with the main valve (5)；
The valve (7) that releases can seal up the outfall (83) that the valve body (8) opens up.
3. ultralow temperature high pressure double spool linkage valve according to claim 2, it is characterised in that: the actuation cavity shell
It (2) include outer housing (21) and inner housing (22)；Wherein,
Circulation passage is formed between the outer housing (21) and the inner housing (22)；
The bellows component (1) is set in the inner housing (22), and is connected with the inner housing (22).
4. ultralow temperature high pressure double spool linkage valve according to claim 3, it is characterised in that: the valve body (8)
Including valve outer housing (81) and valve inner housing (82)；Wherein,
The valve outer housing (81) is threadedly coupled with the outer housing (21)；
The valve outer housing (81) is connected with valve inner housing (82).
5. ultralow temperature high pressure double spool linkage valve according to claim 2, it is characterised in that: described to release valve (7)
Including releasing valve bar (71) and releasing valve head (72)；The main valve (5) includes main valve bar (51) and main valve head
(52)；
The valve bar (71) that releases is connected with the valve head (72) that releases；
The main valve bar (51) is connected with the main valve head (52)；
The main valve bar (51) be it is hollow, described one end for releasing valve bar (71) is embedded at the main valve bar (51)；
The main valve head (52) can seal up the Single port of the valve body (8)；
The sleeve (9) is sheathed on the main valve bar (51)；
The first connecting portion (511) of the main valve bar (51), the second connecting portion (711) for releasing valve bar (71) and institute
The third interconnecting piece (91) for stating sleeve (9) is connected；
The valve head (72) that releases can seal up the outfall (83) that the valve body (8) opens up.
6. ultralow temperature high pressure double spool linkage valve according to claim 2, it is characterised in that: the outer housing (21) is opened
Equipped with blowing mouth (211).
7. ultralow temperature high pressure double spool linkage valve according to claim 2, it is characterised in that: the inner housing (22) is opened
Equipped with control mouth (212).
8. ultralow temperature high pressure double spool linkage valve according to claim 4, it is characterised in that: the valve outer housing
(81) side wall offers entrance (811).
9. ultralow temperature high pressure double spool linkage valve according to claim 4, it is characterised in that: the side of the sleeve (9)
Wall offers the first hole (92).
10. ultralow temperature high pressure double spool linkage valve according to claim 4, it is characterised in that: the valve inner housing
(82) side wall offers the second hole (821).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091922.2A CN109027398B (en) | 2018-09-19 | 2018-09-19 | Ultralow temperature high pressure double-valve core linkage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091922.2A CN109027398B (en) | 2018-09-19 | 2018-09-19 | Ultralow temperature high pressure double-valve core linkage valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109027398A true CN109027398A (en) | 2018-12-18 |
| CN109027398B CN109027398B (en) | 2024-05-03 |
Family
ID=64617156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811091922.2A Active CN109027398B (en) | 2018-09-19 | 2018-09-19 | Ultralow temperature high pressure double-valve core linkage valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109027398B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664257A (en) * | 2019-09-30 | 2020-09-15 | 蓝箭航天空间科技股份有限公司 | Valve structure of liquid rocket engine and liquid rocket engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312182A (en) * | 1970-04-15 | 1973-04-04 | Nippon Oil Seal Ind Co Ltd | Bellows valves |
| FR2487942A1 (en) * | 1980-07-29 | 1982-02-05 | Ind Meca Pour Fluides | THREE-WAY VALVE |
| CN201237008Y (en) * | 2008-06-24 | 2009-05-13 | 苏州新智机电工业有限公司 | Pneumatic control valve with filter |
| CN203614761U (en) * | 2013-11-29 | 2014-05-28 | 北京宇航系统工程研究所 | Ultralow-temperature large-caliber pneumatic exhaust valve |
| CN204420295U (en) * | 2014-12-11 | 2015-06-24 | 太原航空仪表有限公司 | A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure |
| CN209229109U (en) * | 2018-09-19 | 2019-08-09 | 北京航天动力研究所 | Ultralow temperature high pressure double spool linkage valve |
-
2018
- 2018-09-19 CN CN201811091922.2A patent/CN109027398B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312182A (en) * | 1970-04-15 | 1973-04-04 | Nippon Oil Seal Ind Co Ltd | Bellows valves |
| FR2487942A1 (en) * | 1980-07-29 | 1982-02-05 | Ind Meca Pour Fluides | THREE-WAY VALVE |
| CN201237008Y (en) * | 2008-06-24 | 2009-05-13 | 苏州新智机电工业有限公司 | Pneumatic control valve with filter |
| CN203614761U (en) * | 2013-11-29 | 2014-05-28 | 北京宇航系统工程研究所 | Ultralow-temperature large-caliber pneumatic exhaust valve |
| CN204420295U (en) * | 2014-12-11 | 2015-06-24 | 太原航空仪表有限公司 | A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure |
| CN209229109U (en) * | 2018-09-19 | 2019-08-09 | 北京航天动力研究所 | Ultralow temperature high pressure double spool linkage valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664257A (en) * | 2019-09-30 | 2020-09-15 | 蓝箭航天空间科技股份有限公司 | Valve structure of liquid rocket engine and liquid rocket engine |
| CN111664257B (en) * | 2019-09-30 | 2021-09-14 | 蓝箭航天空间科技股份有限公司 | Valve structure of liquid rocket engine and liquid rocket engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109027398B (en) | 2024-05-03 |
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