CN2243012Y - High-pressure high-flow-rate helium pressure release valve - Google Patents
High-pressure high-flow-rate helium pressure release valve Download PDFInfo
- Publication number
- CN2243012Y CN2243012Y CN 95213000 CN95213000U CN2243012Y CN 2243012 Y CN2243012 Y CN 2243012Y CN 95213000 CN95213000 CN 95213000 CN 95213000 U CN95213000 U CN 95213000U CN 2243012 Y CN2243012 Y CN 2243012Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- damping
- valve
- spool
- reduction valve
- 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.)
- Expired - Lifetime
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- Safety Valves (AREA)
Abstract
The utility model relates to a high-pressure high-flow rate helium pressure release valve for the control of a space engine, which comprises a critical valve (1), a valve seat (2), a casing (3), a valve core (4), an inlet filter (13), a high pressure chamber (A) and a low pressure chamber (B). The utility model is characterized in that the interior of the high-pressure high-flow-rate helium pressure release valve is provided with an unloading type balance structure and a gas damping chamber to eliminate or reduce the pressure signature deviations caused by the variation of inlet pressure as much as possible, improving the voltage stabilizing accuracy of the pressure release valve and ensuring high-flow rate flow area. Simultaneously, the utility model has simple structure, small external dimension and light weight.
Description
The utility model relates to a kind of high-pressure high-flow reduction valve, further says so to be applicable to high-pressure high-flow helium reduction valve in the airspace engine control system.
The property of the reduction valve that space flight is used requires reliable operation and lasting accuracy height.Require the rapid adjusting of reduction valve and can guarantee that under utmost point harsh environmental conditions degree of regulation and dynamic stability that outlet pressure is higher are good, also require apparent size little, in light weight.At present, the domestic and international used reduction valve of astrovehicle, generally when inlet pressure was higher, its flow was all less, and the reduction valve of big flow, its pressure is all not high.The helium reduction valve of employed high pressure, big flow emitted a shrill cry in test often in the airspace engine control system in the past, or sympathetic response for a long time.If the lasting pressure oscillations of large amplitude occurs, the spool of reduction valve and valve seat be seriously collision repeatedly, and broken its sealing of ring also can cause rupture of diaphragm sometimes, and spring decreases ring and system pipeline fracture etc.Thereby cause whole engine operation to lose efficacy.
The utility model purpose is to avoid above-mentioned deficiency of the prior art, and a kind of high pressure of discharging type structure, helium reduction valve of big flow of adopting is provided.
The purpose of this utility model is achieved in that it comprises insurance valve, valve seat, housing, spool, inlet filter, hyperbaric chamber A and low-pressure cavity B, its feature has three: the firstth, in the helium reduction valve of high-pressure high-flow, be provided with unloading mechanism, and this mechanism is made up of the spool that is contained in the housing inner chamber successively, the guide sleeve that O-ring seals and anti-friction ring are housed, block, auxiliary spring and the spring seat, the diaphragm unit that is configured in the spool lower end and the main spring that are configured in spool upper end.Equalizing orifice C is arranged on the spool, auxiliary spring chamber, equalizing orifice C and low-pressure cavity B are communicated with by the damping hole E on the spring seat.The secondth, on high-pressure high-flow helium reduction valve, be provided with two place's air dampings, the one, the small damping on the spring seat, the 2nd, damping cavity E, this damping cavity E is made up of damping cover, damping mouth and diaphragm unit.The damping mouth is installed on the damping cover, and has a damping hole that low-pressure cavity B is communicated with this damping cavity E.The 3rd is to adopt the nonmetallic soft seal of metal pair promptly to inlay nonmetal on the valve of spool between valve and valve base.
The utlity model has following advantage:
1. adopt reverse discharging type balanced controls, the equilibrium of forces that inlet pressure is acted on the spool is fallen, and can eliminate or reduce inlet pressure as much as possible to change the pressure characteristic deviation of bringing, thereby improve the precision of voltage regulation of reduction valve.Guarantee the circulation area of big flow simultaneously.
2. owing to be provided with air damping chamber E, help eliminating the starting high frequency noise of reduction valve when outlet pressure changes.
3. adopt anti-friction ring cladding O-ring seals structure, can reduce the frictional force of O-ring seals, guarantee energy proper functioning under ± 55 ℃, satisfy the characteristic requirement of reduction valve.
4. the nonmetallic sealing of metal pair is adopted in the sealing between reduction valve valve and valve base, has reduced the size and the weight of reduction valve.
The utility model is described in further detail below in conjunction with accompanying drawing:
Accompanying drawing is the longitudinal sectional drawing of high-pressure high-flow helium reduction valve.
Referring to accompanying drawing, the connecting-tube nozzle 12 that the ingress of housing 3 is threaded, its inner chamber is equipped with filter 13.The guide sleeve 10 that the inner chamber of housing 3 installs valve seat 2, spool 4 successively, be equipped with O-ring seals 8 and anti-friction ring 9 and block 11, the damping cover 15 of damping mouth 14 is housed, the upper end configuration spring seat 5 and the auxiliary spring 6 of spool 4, its lower end configuration diaphragm group chip module 16 and main spring 17.The outlet port installation insurance valve 1 of housing 3.
High-pressure helium from the motor gas cylinder, enter reduction valve inlet connection mouth 12, through directly entering hyperbaric chamber A behind inlet filter 13 strainer filterings, sealing surface and place, the annulus between valve seat expenditure and pressure at spool 4 flow into low-pressure cavity B, and one road air-flow flows into pipeline through insurance valve 1, use for motor, another road enters damping cavity E through the damping hole of damping mouth 14 buffering, also has equalizing orifice C on the route spool 4 damping hole D that flows through, and enters the auxiliary spring chamber.When outlet pressure departed from specified outlet pressure, the power that acts on diaphragm unit 16 and the spring seat 5 changed, and promotes spool 4, changes the size of annular throttle chink, makes outlet pressure return to rating value.This discharging type structure guarantees can eliminate when reduction valve has certain circulation area or reduce the Pressure characteristics derivation that the inlet pressure variation brings as far as possible, has improved the precision of voltage regulation of reduction valve.The structure of the anti-friction ring 9 cladding O-ring seals of being made by teflon is adopted in the sealing of hyperbaric chamber A in this structure, reduces the frictional force of O-ring seals, satisfies the characteristic of reduction valve ± 55 ℃ of following proper functioning.It is littler than the seal pressure of metal to metal that spool 4 sealing surfaces are inlayed the required seal pressure of polyimide and valve seat 2 sealings, can make spring boundary dimension little like this, to protect the in light weight of reduction valve.
Claims (4)
1. high-pressure high-flow helium reduction valve, it comprises insurance valve (1), valve seat (2), housing (3), spool (4), inlet filter (13), hyperbaric chamber (A) and low-pressure cavity (B), it is characterized in that:
A. in high-pressure high-flow helium reduction valve, be provided with unloading mechanism, this mechanism is made up of the spool (4) that is contained in housing (3) inner chamber successively, the guide sleeve (10) that O-ring seals (8) and anti-friction ring (9) are housed, block (11), the diaphragm unit (16) and the main spring (17) that are configured in the auxiliary spring seat (5) and the auxiliary spring (6) of spool (4) upper end and are configured in spool (4) lower end, equalizing orifice (c) is arranged on the spool (4), auxiliary spring chamber, equalizing orifice (c) and low-pressure cavity (B) are communicated with by the damping hole (D) on the auxiliary spring seat (5);
B. on high-pressure high-flow helium reduction valve, be provided with two place's air dampings, the one, the small damping on the spring seat; The 2nd, damping cavity E, this damping cavity E is made up of damping cover (15), damping mouth (14) and diaphragm unit (16), and damping mouth (14) is installed on the damping cover (15), and has a damping hole that low-pressure cavity (B) is communicated with this damping cavity E;
C. on the valve of spool (4), inlay nonmetal soft seal.
2. a kind of high-pressure high-flow helium reduction valve according to claim 1 is characterized in that: inlay nonmetal polyimide on the valve of spool (4).
3. a kind of high-pressure high-flow helium reduction valve according to claim 1 is characterized in that: anti-friction ring (9) adopts teflon, and cladding O-ring seals (8).
4, a kind of high-pressure high-flow helium reduction valve according to claim 1 is characterized in that: elastic element adopts 3J1 elastic alloy convolution diaphragm in the diaphragm unit (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213000 CN2243012Y (en) | 1995-06-13 | 1995-06-13 | High-pressure high-flow-rate helium pressure release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213000 CN2243012Y (en) | 1995-06-13 | 1995-06-13 | High-pressure high-flow-rate helium pressure release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243012Y true CN2243012Y (en) | 1996-12-18 |
Family
ID=33863016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95213000 Expired - Lifetime CN2243012Y (en) | 1995-06-13 | 1995-06-13 | High-pressure high-flow-rate helium pressure release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243012Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090046A (en) * | 2011-11-01 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Drive system for an electro-mechanical three-way dual seat valve |
| CN103256395A (en) * | 2013-05-25 | 2013-08-21 | 铜陵市三圆特种铸造有限责任公司 | Modularization spool structure of large-flow balance-type pressure regulating value |
| CN103939639A (en) * | 2009-11-10 | 2014-07-23 | 滨特尔阀门控制美国有限合伙公司 | Improved pressure build economizer valve |
| CN105042152A (en) * | 2015-05-07 | 2015-11-11 | 北京航空航天大学 | High-pressure large-flow high-precision compact type two-stage pressure reducer |
| CN106168303A (en) * | 2016-08-26 | 2016-11-30 | 北京控制工程研究所 | A kind of micrometeor high accuracy lightweight miniaturization pressure maintaining valve |
| CN107970533A (en) * | 2017-11-16 | 2018-05-01 | 北京宇航系统工程研究所 | A kind of oxygen pressure reducing valve applied to respiratory system |
| CN111828701A (en) * | 2020-08-04 | 2020-10-27 | 哈尔滨工业大学 | Low-pressure micro-flow pressure reducing valve for space water sublimator |
-
1995
- 1995-06-13 CN CN 95213000 patent/CN2243012Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939639A (en) * | 2009-11-10 | 2014-07-23 | 滨特尔阀门控制美国有限合伙公司 | Improved pressure build economizer valve |
| CN103939639B (en) * | 2009-11-10 | 2016-07-06 | 滨特尔阀门控制美国有限合伙公司 | The pressure build economizer valve improved |
| CN103090046A (en) * | 2011-11-01 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Drive system for an electro-mechanical three-way dual seat valve |
| CN103256395A (en) * | 2013-05-25 | 2013-08-21 | 铜陵市三圆特种铸造有限责任公司 | Modularization spool structure of large-flow balance-type pressure regulating value |
| CN105042152A (en) * | 2015-05-07 | 2015-11-11 | 北京航空航天大学 | High-pressure large-flow high-precision compact type two-stage pressure reducer |
| CN105042152B (en) * | 2015-05-07 | 2017-07-21 | 北京航空航天大学 | A kind of high-precision compact second depressurized device of high-pressure high-flow |
| CN106168303A (en) * | 2016-08-26 | 2016-11-30 | 北京控制工程研究所 | A kind of micrometeor high accuracy lightweight miniaturization pressure maintaining valve |
| CN107970533A (en) * | 2017-11-16 | 2018-05-01 | 北京宇航系统工程研究所 | A kind of oxygen pressure reducing valve applied to respiratory system |
| CN107970533B (en) * | 2017-11-16 | 2021-04-13 | 北京宇航系统工程研究所 | Oxygen pressure reducing valve applied to respiratory system |
| CN111828701A (en) * | 2020-08-04 | 2020-10-27 | 哈尔滨工业大学 | Low-pressure micro-flow pressure reducing valve for space water sublimator |
| CN111828701B (en) * | 2020-08-04 | 2021-05-18 | 哈尔滨工业大学 | Low-pressure micro-flow pressure reducing valve for space water sublimator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |