CN201599414U - High pressure ultra-low temperature pneumatic controlled mushroom valve - Google Patents
High pressure ultra-low temperature pneumatic controlled mushroom valve Download PDFInfo
- Publication number
- CN201599414U CN201599414U CN2009203183920U CN200920318392U CN201599414U CN 201599414 U CN201599414 U CN 201599414U CN 2009203183920 U CN2009203183920 U CN 2009203183920U CN 200920318392 U CN200920318392 U CN 200920318392U CN 201599414 U CN201599414 U CN 201599414U
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- high pressure
- piston
- low temperature
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Abstract
The utility model relates to a high pressure ultra-low temperature pneumatic controlled mushroom valve which also comprises a control device. The control device includes a control cavity, a valve stem, a spring as well as a piston arranged in the control cavity; the control valve is arranged at the end of a middle shell; the piston can reciprocate in the control cavity; the control cavity is provided with a control opening which is connected with a control pneumatic supply; one end of the valve stem is fixedly connected with the piston and the other end of the valve stem penetrates the center of the middle shell and then is connected with a valve core in an entrance shell; a sealing device is arranged between the valve stem and the entrance shell; and the spring is sleeved on the valve stem with one end pressed on the piston and the other end pressed on the entrance shell. The high pressure ultra-low temperature pneumatic controlled mushroom valve solves the technical problems that the current control valve can not meet the requirement of using in high pressure and ultra-low temperature environments. The valve of the high pressure ultra-low temperature pneumatic controlled mushroom valve can be accurately opened at a required time, and rapidly closed without action of auxiliary motive force when the control cavity evacuates gas.
Description
Technical field
The utility model relates to a kind of pneumatic control valve.
Background technique
Be up in the working environment that the 35MPa working medium is liquid oxygen or liquid nitrogen in working pressure, need can high pressure resistant environment and the pneumatic stopping valve of anti-ultra-low temperature surroundings as control unit.When inlet pressure logical control gas during for high pressure, valve open, control chamber is removed gas, and valve can be closed.But in bad working environment like this, in the existing pneumatic stopping valve, not ability ultralow temperature not high pressure resistant, not anti-ultralow temperature that can be high pressure resistant, its combination property can't reach the technical requirements of working environment, and comes the cost of design specialized high pressure ultralow temperature gas control bacterium valve very high according to conventional thinking.
Summary of the invention
The utility model purpose provides a kind of high pressure ultralow temperature gas control bacterium valve, and it has solved the technical problem that existing control valve can't satisfy the usage requirement of high pressure ultra-low temperature surroundings.
Technical solution of the present utility model is:
A kind of high pressure ultralow temperature gas control bacterium valve, comprise valve seat 1, suction casing 2, middle casing 10 and spool 3, described valve seat 1 is fixed on an end of suction casing 2, described middle casing 10 is fixed on the other end of suction casing 2, described valve seat 1 is provided with inlet 21, described suction casing 2 is provided with outlet 22, be provided with the fluid passage 19 of joint access 21 and outlet 22 in the described suction casing 2, described spool 3 is arranged in the fluid passage 19, be provided with between itself and the valve seat 1 and close sealing pair 20, its special way is, described high pressure ultralow temperature gas control bacterium valve also comprises control gear, described control gear comprises control chamber 12, valve rod 9, spring 4 and be arranged on piston 11 in the control chamber 12, described control chamber 12 is arranged on the other end of middle casing 10, described piston 11 can be in control chamber 12 back and forth movement; Described control chamber 12 is provided with control mouth 23, and described control mouth 23 links to each other with the control gas pressure source; One end and the piston 11 of described valve rod 9 are connected, the other end of described valve rod 9 passes spool 3 back and in the suction casing 2 and is connected from middle housing 10 centers, be provided with seal arrangement 8 between described valve rod 9 and the suction casing 2, described spring 4 is placed on the valve rod 9, the one end is pressed on the piston 11, and its other end is pressed on the suction casing 2.
The sealing pair 20 of closing between above-mentioned spool 3 and the valve seat 1 is to adopt conical surface metal to metal seal.
Above-mentioned middle casing 10 is the elongated cylindrical structure, its barrel be provided with a plurality of vertically and the insulation hole 27 of column distribution, described insulation hole 27 is oblong aperture or slotted hole.
Advantage of the present utility model:
1, the utility model provides a kind of Air control valve that can ventilate and open under high pressure (35MPa), the valve working medium is cryogenic media (150 ℃), valve on request the time accurately open, valve can be closed rapidly under the effect of not having other auxiliary power when control chamber is removed gas.
Power when 2, the utility model guarantees valve closing by structural design is from valve itself.When control chamber was removed gas, the power that relies on valve inner spring active force and medium to act on the spool was fitted with valve closing spool and valve seat, and promptly valve can accurately be closed in required time, does not need extra power to make valve closing.
3, the utility model valve seat adopts the metallized metal seal form, guarantees spool unlatching easily under the high pressure low temperature condition.The piston seal of control chamber adopts series connection two pass rubber o-ring to add the sealing configuration of back-up ring; Take above seal approach to make that the sealing of the utility model product is more reliable.The utility model valve exports no pressure medium before valve open, along with the increase of inlet pressure increases the seal pressure of spool thereupon, guaranteed the sealing of cryogenic high pressure lower valve, and satisfies the ability that repeatedly repeats work simultaneously.
4, low temperature resistant, heat-shielding performance good.The utility model is the working environment that satisfies liquid oxygen or liquid nitrogen, and valve body, valve gap and control chamber housing etc. select for use low temperature resistant stainless steel material, valve seat, spool, valve rod, Stem Mut etc. to select low temperature resistant high strength stainless steel material for use, and piston is selected high strength alumin ium alloy for use.In addition, take heat insulation measures from structure, during design under the prerequisite that guarantees enough join strengths and rigidity, on the middle casing in the middle of medium low temperature cavity and the control chamber, adopt to hollow out and stay muscle structure (referring to Fig. 2), can make the least possible up conduction of cold in the valve body like this, to reduce the heat-dissipating space of heat transfer area and raising valve core rod; Make control chamber keep suitable temperature environment, guarantee reliable sealing, can satisfy the minimum temperature of rubber o-ring work simultaneously.
5, the utility model can satisfy the use that liquid oxygen or this class temperature of liquid nitrogen are lower than-150 ℃ ultralow temperature medium, particularly have in the high voltage system of ultra-low temperature surroundings at fields such as modern Aeronautics and Astronautics, petrochemical industry, the energy, power, inlet pressure during for high pressure logical control gas can open valve, control chamber is removed air valve and is closed.
6, the utility model adopts dust cover that the place of hollowing out is protected in the middle casing outside, prevents entering of fifth wheel.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an A-A sectional drawing among Fig. 1;
Wherein: 1-valve seat, 2-suction casing, 3-spool, 4-spring, 5-O shape circle A, 6-O shape circle B and back-up ring, 7-dust cover, the 8-seal arrangement, 9-valve rod, 10-middle casing, the 11-piston, 12-control chamber, 19-fluid passage, 20-closes sealing pair, 21-inlet, 22-outlet, 23-controls mouth, 26-floss hole, 27-insulation hole.
Embodiment
The valve of design is the Normally closed type structure, be sealing and the reusable requirement of satisfying the ultralow temperature medium, spool and valve seat are the full-metallic seal form, spool was not fixed on the valve seat by spring when inlet had pressure, the power that acts on spool by structural design assurance medium when inlet pressure increases increases thereupon, and the seal pressure of spool and valve base chamber is increased.Valve is ventilated and can be opened to control chamber by the control system requirement when inlet has the high pressure low temperature medium, valve inlet is communicated with outlet, after guaranteeing that by structural design control chamber is removed gas, spool is closed under spring force and medium high pressure active force, cut off the medium supply of inlet to outlet, structural design guarantees that the suffered medium force direction of spool is consistent with closing direction, spring force is also consistent with closing direction, so in use only need control chamber to remove gas and do not need other power beyond the valve just can guarantee that valve reliably closes, open on request by the time for the realization valve, the control function of closing.For the temperature that makes cryogenic media is sealed with harmful effect to rubber o-ring on the control chamber, valve core rod length has extended, on the cylinder supporting surface of middle casing, adopt to hollow out and stay the muscle structure, adopt the area of grooving structure decrease temperature propagation with the low temperature cavity bottom that links, control chamber adopts two rubber o-ring cascaded structures to improve sealing reliabilities.For satisfying the working environment of cryogenic media, valve inlet should be provided with the precooling floss hole.
Principle of the present utility model: this high pressure ultralow temperature gas control bacterium valve is normally closed structure, spool is fitted in will enter the mouth on the valve seat by spring force and separates with outlet, after the inlet pressure medium meets the requirements of high pressure, ventilate to control chamber, piston overcomes the power that spring force and medium act on the spool spool is lifted away from valve seat, opens valve inlet is communicated with outlet.Do not remove gas and just can keep the valve open state as long as guarantee control chamber, only need control chamber to remove gas when needing throttle down, spool is fitted in again under spring force and the effect of medium power and will enters the mouth on the valve seat and the outlet disconnection.
Claims (3)
1. high pressure ultralow temperature gas control bacterium valve, comprise valve seat (1), suction casing (2), middle casing (10) and spool (3), described valve seat (1) is fixed on an end of suction casing (2), described middle casing (10) is fixed on the other end of suction casing (2), described valve seat (1) is provided with inlet (21), described suction casing (2) is provided with outlet (22), be provided with the fluid passage (19) of joint access (21) and outlet (22) in the described suction casing (2), described spool (3) is arranged in the fluid passage (19), be provided with between itself and the valve seat (1) and close sealing pair (20), it is characterized in that: described high pressure ultralow temperature gas control bacterium valve also comprises control gear, described control gear comprises control chamber (12), valve rod (9), spring (4) and be arranged on piston (11) in the control chamber (12), described control chamber (12) is arranged on the other end of middle casing (10), described piston (11) can be in control chamber (12) back and forth movement; Described control chamber (12) is provided with control mouthful (23), and described control mouthful (23) links to each other with the control gas pressure source; One end of described valve rod (9) and piston (11) are connected, the other end of described valve rod (9) passes spool (3) back and in the suction casing (2) and is connected from middle housing (10) center, be provided with seal arrangement (8) between described valve rod (9) and the suction casing (2), described spring (4) is placed on the valve rod (9), the one end is pressed on the piston (11), and its other end is pressed on the suction casing (2).
2. high pressure ultralow temperature gas control bacterium valve according to claim 1 is characterized in that: the sealing pair (20) of closing between described spool (3) and the valve seat (1) is to adopt conical surface metal to metal seal.
3. high pressure ultralow temperature gas control bacterium valve according to claim 1 and 2, it is characterized in that: described middle casing (10) is the elongated cylindrical structure, its barrel be provided with a plurality of vertically and the insulation hole (27) of column distribution, described insulation hole (27) is oblong aperture or slotted hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203183920U CN201599414U (en) | 2009-12-24 | 2009-12-24 | High pressure ultra-low temperature pneumatic controlled mushroom valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203183920U CN201599414U (en) | 2009-12-24 | 2009-12-24 | High pressure ultra-low temperature pneumatic controlled mushroom valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201599414U true CN201599414U (en) | 2010-10-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203183920U Expired - Fee Related CN201599414U (en) | 2009-12-24 | 2009-12-24 | High pressure ultra-low temperature pneumatic controlled mushroom valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201599414U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878304A (en) * | 2012-09-26 | 2013-01-16 | 成都欣国立低温科技有限公司 | Fluid medium stop valve |
| CN103075522A (en) * | 2013-01-11 | 2013-05-01 | 新乡平原航空液压设备有限公司 | Drainage stop valve |
| CN109268556A (en) * | 2018-11-06 | 2019-01-25 | 江苏圣泰阀门有限公司 | Ultralow temperature shut-off valve |
| CN112049947A (en) * | 2020-09-03 | 2020-12-08 | 北京星际荣耀空间科技有限公司 | Valve structure and liquid engine |
| CN112377650A (en) * | 2020-11-27 | 2021-02-19 | 西安航天动力研究所 | Small-size integrated high-pressure pneumatic control valve |
| CN112797184A (en) * | 2021-01-04 | 2021-05-14 | 蓝箭航天空间科技股份有限公司 | Pneumatic control valve mechanism for liquid rocket engine and rocket engine |
| WO2022127577A1 (en) * | 2020-12-16 | 2022-06-23 | 张磊 | Z-shaped liquid control valve without diaphragm, shaft, bushing, or spring |
-
2009
- 2009-12-24 CN CN2009203183920U patent/CN201599414U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878304A (en) * | 2012-09-26 | 2013-01-16 | 成都欣国立低温科技有限公司 | Fluid medium stop valve |
| CN103075522A (en) * | 2013-01-11 | 2013-05-01 | 新乡平原航空液压设备有限公司 | Drainage stop valve |
| CN109268556A (en) * | 2018-11-06 | 2019-01-25 | 江苏圣泰阀门有限公司 | Ultralow temperature shut-off valve |
| CN112049947A (en) * | 2020-09-03 | 2020-12-08 | 北京星际荣耀空间科技有限公司 | Valve structure and liquid engine |
| CN112049947B (en) * | 2020-09-03 | 2022-05-24 | 北京星际荣耀空间科技股份有限公司 | Valve structure and liquid engine |
| CN112377650A (en) * | 2020-11-27 | 2021-02-19 | 西安航天动力研究所 | Small-size integrated high-pressure pneumatic control valve |
| CN112377650B (en) * | 2020-11-27 | 2022-07-05 | 西安航天动力研究所 | Small-size integrated high-pressure pneumatic control valve |
| WO2022127577A1 (en) * | 2020-12-16 | 2022-06-23 | 张磊 | Z-shaped liquid control valve without diaphragm, shaft, bushing, or spring |
| CN112797184A (en) * | 2021-01-04 | 2021-05-14 | 蓝箭航天空间科技股份有限公司 | Pneumatic control valve mechanism for liquid rocket engine and rocket engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20141224 |
|
| EXPY | Termination of patent right or utility model |