CN203797063U - Miniature high-temperature gas cartridge-type one-way stop valve - Google Patents
Miniature high-temperature gas cartridge-type one-way stop valve Download PDFInfo
- Publication number
- CN203797063U CN203797063U CN201320812030.3U CN201320812030U CN203797063U CN 203797063 U CN203797063 U CN 203797063U CN 201320812030 U CN201320812030 U CN 201320812030U CN 203797063 U CN203797063 U CN 203797063U
- Authority
- CN
- China
- Prior art keywords
- valve body
- stop valve
- fuel gas
- temperature fuel
- unidirectional stop
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 239000002737 fuel gas Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 4
- 239000011162 core material Substances 0.000 claims description 3
- 229910000753 refractory alloy Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000000945 filler Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to a miniature high-temperature gas cartridge-type one-way stop valve which comprises a valve body, a spring and a valve element. One end of the valve body is connected with a filler neck, and the other end of the valve body is connected with a high-temperature gas device. The valve element comprises a sealing end and a resetting end which are fixedly connected. A sealing surface is formed at the position where the sealing end makes contact with the valve body. The resetting end is located in a cavity of the valve body, the resetting end is provided with a limiting device, one end of the spring is fixed to the sealing end, and the other end of the spring is fixed to the limiting device. The miniature high-temperature gas cartridge-type one-way stop valve solves the technical problems that an existing stop valve in unstable in flow resistance property and sealing performance and short in service life. The miniature high-temperature gas cartridge-type one-way stop valve is used for avoiding dangers caused due to the fact that hot gas flows backwards and has the advantages of being small in size, low in structural mass, long in service life, low in flow resistance, stable in differential pressure and resistant to high temperature.
Description
Technical field
The utility model relates to miniaturization plug-in type unidirectional stop valve for a kind of high-temperature fuel gas device, the key technologies such as elevated-temperature seal design, long lifetime design, low flow resistance design in the structure of this stop valve, have been taken into full account, and through high temperature test examination, superior performance, reliable operation.
Background technique
Existing unidirectional stop valve adopts plastic seal structure more, is only applicable to-30～+ 140 ℃ of temperature ranges, cannot adapt to the applied at elevated temperature environment of 500～800 ℃; And along with spool time of movement is more, the distortion of spool plastic seal face is larger, causes the unstable of flow resistance characteristic and sealability, cannot adapt to long-life requirement; In addition, along with the development of space product Integration Design, valve and gas combustion apparatus need adopt integrated plug-in mounting structure.
Summary of the invention
For solve existing stop valve exist flow resistance characteristic and sealability unstable, the technical problem that working life is short, the utility model provides a kind of miniaturization high-temperature fuel gas plug-in type unidirectional stop valve, be used for preventing that hot fuel gas return-flow from causing danger, and should there is size and architecture quality is little, life-span length, low flow resistance, pressure reduction stable, resistant to elevated temperatures feature.
Technical solution of the present utility model is:
A kind of miniaturization high-temperature fuel gas plug-in type unidirectional stop valve, its special way is: comprise valve body 2, spring 4, spool 5, one end of described valve body 2 is connected with connecting-tube nozzle, the other end of described valve body 2 is connected with high-temperature fuel gas device, described spool 5 comprises sealed end and the reset terminal being fixedly connected with, the contacting point of described sealed end and valve body 2 forms sealing surface, described reset terminal is positioned at the cavity of valve body, described reset terminal is provided with limit stoper, one end of described spring 4 is fixed on sealed end, and the other end is fixed on limit stoper.
Above-mentioned sealing surface is taper, and sealing surface semi-cone angle is 30-45 °.
The width of above-mentioned sealing surface is 0.3-0.4mm.
Above-mentioned seat material is stainless steel, and described valve core material is refractory alloy.
Above-mentioned limit stoper is snap ring 3.
Above-mentioned valve body 2 adopts and is threaded with high-temperature fuel gas device 7.
Between above-mentioned valve body 2 and high-temperature fuel gas device 7, be provided with pad 6.
The utility model compared with prior art tool has the following advantages:
1, the utlity model has that compact structure, size and architecture quality are little, long service life, low flow resistance, pressure reduction are stable, resistant to elevated temperatures feature.
2, the utility model, except can be applicable to high-temperature fuel gas device, is also applicable to wide, the frequent keying of working pressure (in 1000 times), flow gas-liquid, the high low temperature situation below 100g/s.
Accompanying drawing explanation
Fig. 1 is plug-in type unidirectional stop valve structural representation.
Embodiment
As shown in Figure 1, for miniaturization high-temperature fuel gas plug-in type unidirectional stop valve structural drawing, by connecting-tube nozzle 1, valve body 2, snap ring 3, spring 4, spool 5, pad 6, formed.After unidirectional stop valve finished product, adopt and be threaded with high-temperature fuel gas device 7, metallic copper pad compresses, and in order to guarantee sealing reliability, leaves the weld flange that 1mm is thick, electron beam welding after plug-in mounting between unidirectional stop valve and high-temperature fuel gas device 7.
(1) elevated-temperature seal design: in the situation that gas combustion apparatus exists heat time to soak, can not adopt the nonmetal sealing materials such as plastics, rubber, and in metal-metal hard sealing structure, conical surface seal is proved to be the optimal sealing configuration of performance, sealing surface semi-cone angle is 30 ° through optimal design, can utilize sealing axial force, seal f ace width (length on inclined-plane) is controlled at 0.3～0.4mm as far as possible, not only guarantees certain seal pressure but also make sealing surface reach certain area of contact.Valve seat and spool guide surface are integrated on single part, have the advantages that centering is good, reset is good, are easy to guarantee sealability.
(2) long lifetime design: in system gas circuit adjustment process, cartridge valve need to frequently open and close with system pressure, for guaranteeing the long lifetime of cartridge valve, sealing surface is selected wear-resistant sealing material, seat material is that stainless steel, valve core material are refractory alloy, and heat treatment is to guarantee sealing surface hardness HRC43～51; Under applied at elevated temperature condition, expanding with heat and contract with cold of metal is easy to cause spool clamping stagnation, guide surface wearing and tearing, considers the thermal expansivity of spool and valve body material, and the gap of spool and valve body fitting surface adopts H8/d9 more reasonable; Spring is arranged on to sealing surface upstream, adopts Snap ring structure holddown spring, make elastic element away from downstream gas combustion apparatus, spring mechanical stable performance, guarantees spool return and sealing reliability.
(3) low flow resistance design: unidirectional stop valve oppositely sealing mainly guarantees by spring force, and the size of spring force has directly determined the flow resistance of safety check, in order to obtain larger seal pressure under less spring force, in design, select compared with big spring power and less spring rate (1.5N/mm), guarantee the little and high conformity of flow resistance.
Working principle of the present utility model: when pressure reduction is greater than starting differential pressure before and after unidirectional stop valve, spool is opened, and upstream medium flows into downstream through safety check; When inlet pressure reduces or front and back pressure reduction during lower than starting differential pressure, by Returnning spring, make spool return, spool, valve base sealing, prevention downstream media or fuel gas return-flow.
The embodiment that is applied to certain engine system is as follows:
Plug-in type unidirectional stop valve has participated in certain gas generator heat run and the examination of certain model gas booster system joint-trial, has verified the ability to work of unidirectional stop valve under 500 ℃ of high temperature and reverse sealing reliability.From the result of pressurization system joint-trial, unidirectional stop valve keying is flexible, nearly over thousands of the rear overhaul of action, and its sealability is constant.
Those skilled in the art can be according to different designing requirements and design parameter carry out various improvement and replacing in the situation that do not depart from the structure that claim defines, and therefore, the utility model is widely.
Claims (7)
1. a miniaturization high-temperature fuel gas plug-in type unidirectional stop valve, it is characterized in that: comprise valve body (2), spring (4), spool (5), one end of described valve body (2) is connected with connecting-tube nozzle (1), the other end of described valve body (2) is connected with high-temperature fuel gas device, described spool (5) comprises sealed end and the reset terminal being fixedly connected with, the contacting point of described sealed end and valve body (2) forms sealing surface, described reset terminal is positioned at the cavity of valve body, described reset terminal is provided with limit stoper, one end of described spring (4) is fixed on sealed end, and the other end is fixed on limit stoper.
2. miniaturization high-temperature fuel gas plug-in type unidirectional stop valve according to claim 1, is characterized in that: described sealing surface is taper, and sealing surface semi-cone angle is 30-45 °.
3. miniaturization high-temperature fuel gas plug-in type unidirectional stop valve according to claim 1 and 2, is characterized in that: the width of described sealing surface is 0.3-0.4mm.
4. miniaturization high-temperature fuel gas plug-in type unidirectional stop valve according to claim 3, is characterized in that: described valve body material is stainless steel, and described valve core material is refractory alloy.
5. miniaturization high-temperature fuel gas plug-in type unidirectional stop valve according to claim 4, is characterized in that: described limit stoper is snap ring (3).
6. miniaturization high-temperature fuel gas plug-in type unidirectional stop valve according to claim 5, is characterized in that: described valve body (2) adopts and is threaded with high-temperature fuel gas device (7).
7. miniaturization high-temperature fuel gas plug-in type unidirectional stop valve according to claim 5, is characterized in that: between described valve body (2) and high-temperature fuel gas device (7), be provided with pad (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812030.3U CN203797063U (en) | 2013-12-10 | 2013-12-10 | Miniature high-temperature gas cartridge-type one-way stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812030.3U CN203797063U (en) | 2013-12-10 | 2013-12-10 | Miniature high-temperature gas cartridge-type one-way stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797063U true CN203797063U (en) | 2014-08-27 |
Family
ID=51379274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320812030.3U Expired - Fee Related CN203797063U (en) | 2013-12-10 | 2013-12-10 | Miniature high-temperature gas cartridge-type one-way stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797063U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178636A (en) * | 2017-07-01 | 2017-09-19 | 宁波华成阀门有限公司 | A kind of high temperature resistant high reliability check-valves and its manufacture method |
| CN107606250A (en) * | 2017-09-07 | 2018-01-19 | 上海空间推进研究所 | A kind of check valve for pneumatic booster |
| CN109357050A (en) * | 2018-12-13 | 2019-02-19 | 西安航天动力研究所 | A kind of one-way cock with self-locking function |
| CN109736984A (en) * | 2019-03-01 | 2019-05-10 | 广西玉柴机器股份有限公司 | A kind of engine oil return pipe of built-in one-way valve structures |
| CN110118276A (en) * | 2019-05-31 | 2019-08-13 | 孙灿 | A kind of self-purification type valve |
-
2013
- 2013-12-10 CN CN201320812030.3U patent/CN203797063U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178636A (en) * | 2017-07-01 | 2017-09-19 | 宁波华成阀门有限公司 | A kind of high temperature resistant high reliability check-valves and its manufacture method |
| CN107606250A (en) * | 2017-09-07 | 2018-01-19 | 上海空间推进研究所 | A kind of check valve for pneumatic booster |
| CN109357050A (en) * | 2018-12-13 | 2019-02-19 | 西安航天动力研究所 | A kind of one-way cock with self-locking function |
| CN109357050B (en) * | 2018-12-13 | 2019-11-15 | 西安航天动力研究所 | A kind of one-way cock with self-locking function |
| CN109736984A (en) * | 2019-03-01 | 2019-05-10 | 广西玉柴机器股份有限公司 | A kind of engine oil return pipe of built-in one-way valve structures |
| CN110118276A (en) * | 2019-05-31 | 2019-08-13 | 孙灿 | A kind of self-purification type valve |
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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: 20140827 |