CN202118319U - Air valve type valve core of safety valve - Google Patents
Air valve type valve core of safety valve Download PDFInfo
- Publication number
- CN202118319U CN202118319U CN2011202232664U CN201120223266U CN202118319U CN 202118319 U CN202118319 U CN 202118319U CN 2011202232664 U CN2011202232664 U CN 2011202232664U CN 201120223266 U CN201120223266 U CN 201120223266U CN 202118319 U CN202118319 U CN 202118319U
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- Prior art keywords
- valve
- valve core
- spool
- safety valve
- core case
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Abstract
The utility model discloses an air valve type valve core of a safety valve, which comprises a valve core seat and is characterized in that: the valve core seat is connected with a valve core extending into a body thereof, wherein the valve core is connected with a piston and a cylinder sleeve in sequence. By utilizing a novel valve core to be matched and connected with the valve core seat instead of the traditional bolt, the air valve type valve core of the safety valve ensures the coaxiality of the valve core in replacement, ensures the sealing effect, and achieves simple machining technique.
Description
Technical field
The utility model relates to a kind of Pilot operated safety valve valve core structure, belongs to the mechanical structure technical field, particularly a kind of air gate type safety valve spool.
Background technique
The variation of direction, pressure and the flow of safety valve spool major control safety valve, the sealing surface of spool damages, and can have a strong impact on sealing effect, even can influence the normal operation of unit, causes shutting down.
Take turns the sealing surface of the level Four outlet safety valve sealed member of southern rock gas station 900,000 side's natural gas treatment plants like oil field, CNPC Tarim Basin; Fragile, the life-span is short, not only causes the unit disorderly closedown; Influence airlifting oil recovery production, and strengthened field maintenance working strength and work difficulty.According to analysis that the safety valve that disassembles is disintegrated, find that the main cause of leaking in the safety valve is that its sealing surface damages, thereby cause leaking in the safety valve, influence unit and run well.Safety valve material and sealing means are analyzed:
1, find that through analyzing former safety valve sealing surface material is nonmetal teflon, and on-the-spot gaslift pressure is higher, reaches 13.3Mpa, and teflon is softer, when safety valve jumping up, Reseating pressure of a safety valve is higher, causes the sealing surface of teflon to damage easily.
2, analyze former safety valve through sealing means and adopt horizontal seal, sealing mode area of contact is less, and the excretion circulation is relatively poor, cause dislocation during valve core reset easily, and closing velocity is slower, causes sealing surface by media damage easily.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of air gate type safety valve spool, and sealing effect is good, and frictional force is little, flexible movements, and long service life, processing technology is simple.
The utility model is that the technological scheme through once realizes:
A kind of air gate type safety valve spool comprises valve core case, and said valve core case connects the spool that stretches into its body, and said spool connects piston and cylinder sleeve successively.
Said valve core case inside center contains a valve seat endoporus, and the valve seat endoporus plays guide rail effect.
Said spool is a disc-shaped base and is vertically set on the cylindrical guide rod on the said center.Spool mainly play the guiding role.
The cylindrical guide rod of said spool stretches into the inside of the inner valve seat endoporus of said valve core case.Through the cylindrical guide rod and the valve seat endoporus of working in coordination, guaranteed the coaxality of valve core reset, guaranteed sealing effect.
The processing of the utility model is according to safety valve principle of start-stop and the similar characteristics of engine breathing door principle of start-stop, and the employing angle is that 20 ° valve improves the safety valve spool as sealed member, and its reason has three:
1, engine valve generally adopts angled type, and angle is typically chosen in 20-45 °, and such selection can make valve and air valve seat ring become conical contact face, and lets valve voluntarily to centermost, makes valve and seat ring driving fit sealing, can not leak gas.
2, in the selection of air valve angle, because after valve seat tilted, under identical lift height, the more little then volumetric efficiency of angle was higher, thereby improves the drainage flow flux; Because air valve angle is less, can reduce the valve lifting height simultaneously,, make valve rise to peak very soon thereby shorten move distance, can keep the long period, guarantee to release discharge value.Therefore select 20 ° valve.
3, because valve generally adopts the chrome-bearing alloy steel, have stronger wear resistance, heat-resisting quantity, have stronger impact resistance.Therefore behind safety valve jumping up, return seat, can guarantee that sealing surface is not fragile.Through test, take-off does not still have damage 100 times, bigger prolongation safety valve working life.
The beneficial effect of the utility model is: compare with original sealing means and have the following advantages: (1) aligns voluntarily, and sealing is reliable; (2) little, the flexible movements of frictional force; (3) the unloading discharge value is big, long service life.And be more convenient for after improving repairing, only need its valve is ground, can recover its sealability, need not to change part.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION figure of general existing technology safety valve spool
Fig. 2 is the STRUCTURE DECOMPOSITION figure of the utility model air gate type safety valve spool
Embodiment
Below in conjunction with accompanying drawing, the utility model is further specified.
Like Fig. 1, be the STRUCTURE DECOMPOSITION figure of general existing technology safety valve spool, comprise successively the valve core case 101, bolt 102, very little pad 103, sealing gasket 104 and the piston 105 that connect, wherein being connected of valve core case 101 and bolt 102, sealing effect is not good, easily damage.
Like Fig. 2, be the STRUCTURE DECOMPOSITION figure of the utility model air gate type safety valve spool, comprise valve core case 201, said valve core case 201 connects the spool 202 that stretches into its body, and said spool 202 connects piston 203 and cylinder sleeve 204 successively.Wherein valve core case 201 inside center contain a valve seat endoporus 2012, and the valve seat endoporus plays guide rail effect; Spool 202 is disc-shaped base 2021 and is vertically set on base 2021 supercentral cylindrical guide rods 2022 that spool 202 mainly play the guiding role.The cylindrical guide rod of spool 202 stretches into the inside of the valve seat endoporus 2012 of valve core case 201 inside.Through the cylindrical guide rod and the valve seat endoporus of working in coordination, guaranteed the coaxality of valve core reset, guaranteed sealing effect.
Claims (4)
1. an air gate type safety valve spool comprises valve core case, it is characterized in that said valve core case connects the spool that stretches into its body, and said spool connects piston and cylinder sleeve successively.
2. air gate type safety valve spool as claimed in claim 1 is characterized in that said valve core case inside center contains a valve seat endoporus.
3. air gate type safety valve spool as claimed in claim 1 is characterized in that said spool is a disc-shaped base and is vertically set on the cylindrical guide rod on the said center.
4. like claim 1 or 3 described air gate type safety valve spools, it is characterized in that the cylindrical guide rod of said spool stretches into the inside of the inner valve seat endoporus of said valve core case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202232664U CN202118319U (en) | 2011-06-28 | 2011-06-28 | Air valve type valve core of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202232664U CN202118319U (en) | 2011-06-28 | 2011-06-28 | Air valve type valve core of safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118319U true CN202118319U (en) | 2012-01-18 |
Family
ID=45459386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202232664U Expired - Fee Related CN202118319U (en) | 2011-06-28 | 2011-06-28 | Air valve type valve core of safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777648A (en) * | 2012-06-14 | 2012-11-14 | 珠海爱迪生节能科技有限公司 | Flow limiting shutoff valve |
-
2011
- 2011-06-28 CN CN2011202232664U patent/CN202118319U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777648A (en) * | 2012-06-14 | 2012-11-14 | 珠海爱迪生节能科技有限公司 | Flow limiting shutoff valve |
| CN102777648B (en) * | 2012-06-14 | 2014-04-16 | 珠海爱迪生节能科技有限公司 | Flow limiting shutoff valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Kou Guo Inventor after: Wang Xiangfei Inventor after: Shuai Wugang Inventor before: Kou Guo Inventor before: Wang Xiangfei Inventor before: Shuai Wugang |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 841000, No. 26, No. 2, Petrochemical Road, the Xinjiang Uygur Autonomous Region, Korla Patentee after: Kou Guo Patentee after: Wang Xiangfei Patentee after: Shuai Wugang Address before: 841000, No. 26, No. 2, Petrochemical Road, the Xinjiang Uygur Autonomous Region, Korla Patentee before: Kou Guo Patentee before: Wang Xiangfei Patentee before: Shuai Wugang |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20130628 |