CN109027398B - Ultralow temperature high pressure double-valve core linkage valve - Google Patents
Ultralow temperature high pressure double-valve core linkage valve Download PDFInfo
- Publication number
- CN109027398B CN109027398B CN201811091922.2A CN201811091922A CN109027398B CN 109027398 B CN109027398 B CN 109027398B CN 201811091922 A CN201811091922 A CN 201811091922A CN 109027398 B CN109027398 B CN 109027398B
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- valve
- shell
- assembly
- main
- sleeve
- Prior art date
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- 238000012856 packing Methods 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 8
- 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
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas 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
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction 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 an ultralow temperature high pressure double-valve core linkage valve, which comprises: an actuating chamber assembly A and a valve assembly B; the actuating cavity assembly A comprises a corrugated pipe assembly, an actuating cavity shell, a packing seal and a push rod; wherein the bellows assembly is disposed within the actuation cavity housing; one end of the ejector rod is connected with the bellows assembly; the packing is filled between the corrugated pipe assembly and the ejector rod in a sealing way; the actuating cavity shell is connected with the valve assembly B. The invention has the advantages of small flow resistance loss of the valve, enough action life and reliable sealing performance.
Description
Technical Field
The invention belongs to the technical field of liquid rocket engine fluid control, and particularly relates to an ultralow-temperature high-pressure double-valve-core linkage valve.
Background
The YF-90 oxyhydrogen engine is used as a core secondary engine in the heavy carrier rocket configuration of China and participates in space plans such as the future China manned lunar, space station, deep space exploration and the like. The valve is positioned between the high-pressure hydrogen turbine pump and the thrust chamber hydrogen collector, and is an essential important component for realizing the supply or cut-off function of the high-pressure liquid hydrogen medium flowing into the thrust chamber of the engine. The existing low-temperature medium valve cannot bear low-temperature liquid hydrogen (20K) medium up to 39MPa, has short action life and weak sealing performance, and therefore, the valve capable of resisting ultralow temperature and ultrahigh pressure needs to be designed.
Disclosure of Invention
The invention solves the technical problems that: overcomes the defects of the prior art, provides an ultralow temperature high pressure double-valve core linkage valve, is designed for light weight, and has enough action life and reliable sealing performance.
The invention aims at realizing the following technical scheme: an ultra-low temperature high pressure dual spool ganged valve comprising: an actuating chamber assembly A and a valve assembly B; the actuating cavity assembly A comprises a corrugated pipe assembly, an actuating cavity shell, a packing seal and a push rod; wherein the bellows assembly is disposed within the actuation cavity housing; one end of the ejector rod is connected with the bellows assembly; the packing is filled between the corrugated pipe assembly and the ejector rod in a sealing way; the actuating cavity shell is connected with the valve assembly B.
In the ultralow temperature high pressure double-valve core linkage valve, the valve assembly B comprises a main valve, a spring, a discharging valve, a valve shell and a sleeve; wherein the actuation cavity shell is connected with the valve shell; the main valve is arranged in the valve shell, and one end of the main valve can seal one port of the valve shell; the other end of the main valve is connected with the sleeve; the sleeve is arranged in the valve shell and is connected with the discharge valve; the spring is sleeved on the sleeve, one end of the spring is in pressure connection with the sleeve, and the other end of the spring is in pressure connection with the valve shell; the other end of the ejector rod is contacted with the main valve; the drain valve can seal a drain hole formed in the valve housing.
In the ultralow-temperature high-pressure double-valve-core linkage valve, the actuating cavity shell comprises an outer shell and an inner shell; wherein a flow channel is formed between the outer housing and the inner housing; the bellows assembly is arranged in the inner shell and is connected with the inner shell.
In the ultralow-temperature high-pressure double-valve-core linkage valve, the valve shell comprises a valve outer shell and a valve inner shell; wherein the valve outer shell is in threaded connection with the outer shell; the valve outer shell is connected with the valve inner shell.
In the ultralow temperature high pressure double-valve core linkage valve, the discharge valve comprises a discharge valve rod and a discharge valve head; the main valve comprises a main valve rod and a main valve head; the discharge valve rod is connected with the discharge valve head; the main valve rod is connected with the main valve head; the main valve rod is hollow, and one end of the release valve rod is embedded in the main valve rod; the main valve head can seal one port of the valve shell; the sleeve is sleeved on the main valve rod; the first connecting part of the main valve rod, the second connecting part of the release valve rod and the third connecting part of the sleeve are connected; the discharge valve head can seal a discharge port formed in the valve housing.
In the ultralow-temperature high-pressure double-valve-core linkage valve, the outer shell is provided with the blowing-out port.
In the ultralow-temperature high-pressure double-valve-core linkage valve, the inner shell is provided with the control port.
In the ultralow-temperature high-pressure double-valve-core linkage valve, the side wall of the valve outer shell is provided with the inlet.
In the ultralow-temperature high-pressure double-valve-core linkage valve, the side wall of the sleeve is provided with the first hole.
In the ultralow-temperature high-pressure double-valve-core linkage valve, the side wall of the valve inner shell is provided with the second hole.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention uses the form of bellows assembly in the control cavity, and the valve reliability is improved by controlling the valve action through high-pressure helium.
(2) The two shells are connected by screw threads, so that the weight of the shells is greatly reduced;
(3) The main flow path and the precooling discharge path are integrated, and the two-position three-way combined valve meets the application of the high-pressure low-temperature working condition environment in a low-temperature engine system;
(4) The metal seal can meet the requirement of good sealing effect on low-temperature medium under high pressure.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structural diagram of an ultralow temperature high pressure double-valve-core linkage valve provided by an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Fig. 1 is a schematic structural diagram of an ultralow temperature high pressure double-valve-core linkage valve provided by an embodiment of the invention. As shown in FIG. 1, the ultralow temperature high pressure double-valve-core linkage valve comprises an actuating cavity component A and a valve component B; wherein,
The actuating cavity assembly A comprises a corrugated pipe assembly 1, an actuating cavity shell 2, a packing seal 3 and a push rod 4; wherein the bellows assembly 1 is arranged in the actuating cavity shell 2; one end of the ejector rod 4 is connected with the corrugated pipe assembly 1; the packing seal 3 is filled between the corrugated pipe assembly 1 and the ejector rod 4; the actuating chamber housing 2 is connected to the shutter assembly B. In specific implementation, the left end of the ejector rod 4 is fixedly connected with the corrugated pipe assembly 1.
The valve assembly B comprises a main valve 5, a spring 6, a release valve 7, a valve shell 8 and a sleeve 9; wherein the actuating chamber housing 2 is connected with the valve housing 8; the main valve 5 is arranged in the valve shell 8, and one end of the main valve 5 can seal one port of the valve shell 8; the other end of the main valve 5 is connected with a sleeve 9; the sleeve 9 is arranged in the valve shell 8, and the sleeve 9 is connected with the release valve 7; the spring 6 is sleeved on the sleeve 9, one end of the spring 6 is in pressure connection with the sleeve 9, and the other end of the spring 6 is in pressure connection with the valve shell 8; the other end of the ejector rod 4 is contacted with the main valve 5; the discharge valve 7 can seal a discharge port 83 opened in the valve housing 8.
The actuation chamber housing 2 includes an outer housing 21 and an inner housing 22; wherein a flow passage is formed between the outer case 21 and the inner case 22; the bellows assembly 1 is disposed within the inner housing 22 and is connected to the inner housing 22.
The shutter housing 8 includes a shutter outer housing 81 and a shutter inner housing 82; wherein the shutter outer case 81 is screw-coupled with the outer case 21; the shutter outer case 81 and the shutter inner case 82 are connected.
The discharge shutter 7 includes a discharge shutter lever 71 and a discharge shutter head 72; the main shutter 5 includes a main shutter lever 51 and a main shutter head 52; the discharge shutter lever 71 is connected to the discharge shutter head 72; the main shutter lever 51 is connected to the main shutter head 52; the main valve rod 51 is hollow, and one end of the release valve rod 71 is embedded in the main valve rod 51; the sleeve 9 is sleeved on the main valve rod 51; the first connection portion 511 of the main shutter lever 51, the second connection portion 711 of the escape shutter lever 71, and the third connection portion 91 of the sleeve 9 are connected; the discharge valve head 72 can seal a discharge port 83 opened in the valve housing 8. The main shutter head 52 can seal the left port of the shutter housing 8.
As shown in fig. 1, the outer case 21 is provided with a blowing port 211, the inner case 22 is provided with a control port 212, the sidewall of the valve outer case 81 is provided with an inlet 811, the sidewall of the sleeve 9 is provided with a first hole 92, and the sidewall of the valve inner case 82 is provided with a second hole 821.
Working principle: when the engine is precooled, as shown in fig. 1, the state of each component of the ultralow-temperature high-pressure double-valve-core linkage valve is that the spring 6 enables the sleeve 9 to move leftwards, and the sleeve 9, the main valve 5 and the discharge valve 7 are fixedly connected, so that the sleeve 9, the main valve 5 and the discharge valve 7 all move leftwards, the main valve head 52 of the main valve 5 blocks the left port of the valve shell 8, the actuating cavity component A and the valve component B are not communicated with each other, precooling medium flows in from the inlet 811, flows into the space in the valve inner shell 82 through the first hole 92 of the sleeve 9 and the second hole 821 of the valve inner shell 82, and is discharged through the discharge port 83.
When the engine is started, high-pressure (15-23 MPa) control air is introduced from the control port 212 of the inner shell 22 to the outer cavity of the corrugated pipe assembly 1, the high-pressure control air presses the corrugated pipe assembly 1 to move rightward, so that the ejector rod 4 pushes the main valve head 52 of the main valve 5 to move towards the discharge port, and the sleeve 9, the main valve 5 and the discharge valve 7 are fixedly connected, so that the sleeve 9, the main valve 5 and the discharge valve 7 move towards the discharge port, the discharge valve head 72 of the discharge valve 7 blocks the discharge port 83, the left port of the valve outer shell 81 is opened, and precooling medium enters a channel between the valve outer shell 81 and the valve inner shell 82 from the left port of the valve outer shell 81 and is discharged from the outlet of the valve shell 8. Because the packing seal 3 is filled between the bellows assembly 1 and the ejector rod 4, the precooling medium cannot enter the bellows assembly 1, and therefore the bellows assembly 1 is effectively protected.
After the engine enters the primary working condition, the control gas is removed, and the valve maintains the open state of the main flow path under the combined action of the spring force, the medium pressure difference force of the main valve and the medium force of the discharging valve. In the whole main stage working section of the engine, a main channel of a thrust chamber hydrogen valve is kept open, a discharge channel is kept closed, and a discharge valve ensures low-temperature sealing of high pressure of 39 MPa. When the engine is shut down, the pressure of the medium is reduced to 2.5-3 MPa, the spring force and the pressure of the medium pressure on the main valve overcome the medium force of the discharging valve to push the main valve to be closed, the discharging outlet is opened, the medium in the valve cavity is discharged from the discharging outlet, and the valve returns to the initial assembly state.
The valve housing 81 is screwed with the housing 21 and the final assembly interface position is ensured by the size of the mating surface of the repair screw.
The bellows assembly 1 is firstly installed in the actuating cavity shell 2 at the actuating cavity assembly A, the packing seal 3 and the ejector rod 4 are independently assembled to perform an actuating seal performance test, and the actuating cavity shell 2 is installed after the dynamic seal leakage rate meets the requirement. Wherein the packing and the corrugated pipe assembly 1 are static seals, and the ejector rod 4 is in reciprocating dynamic seal. The disc spring loaded packing dynamic seal, the ejector rod 4 and the corrugated pipe assembly 1 are assembled independently, and then are integrally installed into the actuating cavity shell 2 after the assembly test is qualified, so that the replaceability and the verifiability of the dynamic seal structure are realized.
The main valve 5 and the discharging valve 7 of the valve component B are in linkage design through bolts and are respectively connected with the valve shell 8 through threads, so that the opening and the closing of the main valve 5 and the discharging valve 7 can be controlled by only one actuating cavity. Because the overall size of the valve is longer, the main guide is arranged at the main valve 5 in the design, the auxiliary guide is arranged at the discharging valve 7, and the sealing movement centering of the two valves is improved through the two guides.
The above embodiments are only preferred embodiments of the present invention, and common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the scope of the present invention.
Claims (7)
1. An ultralow temperature high pressure double-valve core linkage valve is characterized by comprising: an actuating chamber assembly A and a valve assembly B; wherein,
The actuating cavity assembly A comprises a corrugated pipe assembly (1), an actuating cavity shell (2), a packing seal (3) and a push rod (4); wherein,
The bellows assembly (1) is arranged in the actuating cavity shell (2);
one end of the ejector rod (4) is connected with the corrugated pipe assembly (1);
The packing seal (3) is filled between the corrugated pipe assembly (1) and the ejector rod (4);
the actuating cavity shell (2) is connected with the valve assembly B;
The valve assembly B comprises a main valve (5), a spring (6), a discharging valve (7), a valve shell (8) and a sleeve (9); wherein,
The actuating cavity shell (2) is connected with the valve shell (8);
the main valve (5) is arranged in the valve shell (8), and one end of the main valve (5) can seal one port of the valve shell (8);
the other end of the main valve (5) is connected with the sleeve (9);
the sleeve (9) is arranged in the valve shell (8), and the sleeve (9) is connected with the discharge valve (7);
The spring (6) is sleeved on the sleeve (9), one end of the spring (6) is in pressure connection with the sleeve (9), and the other end of the spring (6) is in pressure connection with the valve shell (8);
The other end of the ejector rod (4) is contacted with the main valve (5);
The discharge valve (7) can seal a discharge port (83) formed in the valve housing (8);
the discharge valve (7) comprises a discharge valve rod (71) and a discharge valve head (72); the main valve (5) comprises a main valve rod (51) and a main valve head (52);
The discharge valve rod (71) is connected with the discharge valve head (72);
The main valve rod (51) is connected with the main valve head (52);
The main valve rod (51) is hollow, and one end of the release valve rod (71) is embedded in the main valve rod (51);
the main valve head (52) can seal one port of the valve shell (8);
the sleeve (9) is sleeved on the main valve rod (51);
The first connection (511) of the main shutter lever (51), the second connection (711) of the release shutter lever (71) and the third connection (91) of the sleeve (9) are connected;
the discharge valve head (72) can seal a discharge port (83) formed in the valve shell (8);
the actuating cavity shell (2) comprises an outer shell (21) and an inner shell (22); wherein,
-A flow channel is formed between the outer housing (21) and the inner housing (22);
the bellows assembly (1) is arranged in the inner shell (22) and is connected with the inner shell (22).
2. The ultra-low temperature high pressure double spool linkage valve according to claim 1, wherein: the valve housing (8) comprises a valve outer housing (81) and a valve inner housing (82); wherein,
The valve outer shell (81) is in threaded connection with the outer shell (21);
The valve outer shell (81) is connected with the valve inner shell (82).
3. The ultra-low temperature high pressure double spool linkage valve according to claim 1, wherein: the outer shell (21) is provided with a blowing opening (211).
4. The ultra-low temperature high pressure double spool linkage valve according to claim 1, wherein: the inner housing (22) is provided with a control port (212).
5. The ultra-low temperature high pressure double spool linkage valve according to claim 2, wherein: an inlet (811) is formed in the side wall of the valve outer case (81).
6. The ultra-low temperature high pressure double spool linkage valve according to claim 2, wherein: a first hole (92) is formed in the side wall of the sleeve (9).
7. The ultra-low temperature high pressure double spool linkage valve according to claim 2, wherein: a second hole (821) is formed in the side wall of the valve inner shell (82).
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 CN109027398A (en) | 2018-12-18 |
| CN109027398B true CN109027398B (en) | 2024-05-03 |
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| 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 |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
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| Publication number | Publication date |
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| CN109027398A (en) | 2018-12-18 |
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