CN202545835U - Metal membrane stop valve - Google Patents
Metal membrane stop valve Download PDFInfo
- Publication number
- CN202545835U CN202545835U CN2012200344778U CN201220034477U CN202545835U CN 202545835 U CN202545835 U CN 202545835U CN 2012200344778 U CN2012200344778 U CN 2012200344778U CN 201220034477 U CN201220034477 U CN 201220034477U CN 202545835 U CN202545835 U CN 202545835U
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- China
- Prior art keywords
- valve
- screw
- screw rod
- valve gap
- metal membrane
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- 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
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Abstract
The utility model discloses a metal membrane stop valve, which comprises a valve body, a valve cover and a screw, wherein the valve seat is arranged in the valve body, the valve seat is provided with a valve core, one end of the screw faces the valve core, after the other end of the screw penetrates out of the valve cover, the outer end of the screw is connected with a rotating mechanism, the screw is matched and connected with an internal thread of the valve cover, one end of the valve cover is matched and connected with a screw thread of the valve body, the other end of the valve cover is in a sealed connection with a screw filling, and the valve seat and the bottom of the valve core have a conical surface sealed fit; a combined part of the valve cover and the valve body is provided with an elastic metal membrane, and the valve core and the screw are separately arranged on both sides of the elastic metal membrane. A dynamic sealing structure between the screw and the valve cover is changed into a static sealing structure in reliable sealing and long service life; through the sealing structure of the metal membrane, the rotating screw and the lower valve core are separated, and the metal membrane is utilized to seal, so that zero leakage is ensured, and the metal membrane stop valve is high-temperature resistant and high-pressure resistant.
Description
Technical field
The utility model relates to a kind of sealing of metal diaphragm stop valve, particularly hand stop valve.
Background technique
Screw thread between the screw rod of existing hand stop valve and the valve gap be connected, screw rod is borrowed screw thread in valve gap, rotate and is moved up and down, the opening and closing of realization stop valve.In order to prevent that medium from flowing out from the gap; In valve gap, place filler chamber, in filler chamber, fill up whippy soft-filler, screw rod is rotated in valve gap and do not reveal; Sealing configuration is a movable sealing structure between the screw rod of this stop valve and the valve gap; In the occasion of often opening and closing, use, poor reliability is difficult to guarantee that zero reveals.Occurred closed stop valve afterwards, and in valve body, increased the elastic caoutchouc seal dissepiment, the periphery of barrier film is pressed on the valve body with valve gap, can prevent that the medium in the valve from revealing.Though the diaphragm of rubber good springiness, good seal performance, this occasion to HTHP can not be used.
The model utility content
The purpose of the utility model is to above-mentioned deficiency, proposes a kind of reliable sealing metal diaphragm stop valve, is specially adapted to HTHP and requires the zero occasion of revealing.
The utility model is realized through following technological scheme:
A kind of metal diaphragm stop valve comprises valve body, valve gap and screw rod; Be provided with valve seat in the valve body; Spool is set on the valve seat, and an end face of screw rod is to the spool setting, and the screw rod the other end is connected with rotating machinery after passing valve gap; And screw rod is connected with the valve gap screw-internal thread fit; One end of valve gap is connected with the valve body screw-thread fit, and the other end of valve gap then is connected with the screw rod packing seal, and said valve seat cooperates for conical surface seal with the spool bottom; And valve gap and valve body junction are provided with the metallic elastic barrier film, and spool and screw rod are divided into the both sides of this metallic elastic barrier film.
Said metallic elastic barrier film is a wave structure.
Said metallic elastic barrier film is the nitinol elastic diaphragm.
The other end of said valve gap is connected through multilayer mats chip packing seal equipment with screw rod, and multilayer mats chip water-tight equipment comprises gland nut, and gland nut is arranged on the valve gap top, between gland nut and the valve gap pad is set.
The beneficial effect of the utility model is:
The utility model changes over static seal structure to the movable sealing structure of screw rod and valve cover chamber, and sealing is reliable, long service life.The metal diaphragm sealing configuration makes rotary screw separate with the bottom spool, and utilizes metal diaphragm to carry out sealing, guarantees that zero reveals, and is high temperature resistant again, high pressure; Screw rod and gland nut top still keep the multilayer mats chip packing seal that former common valve has, to guarantee zero leakage, even and guarantee when the metallic elastic diaphragm seal produces actual effect, by second road sealing device safety guarantee to be provided.
Description of drawings
Fig. 1 is the structural representation of the utility model metal diaphragm stop valve.
Among the figure: 1, nut; 2, pad; 3, handwheel; 4, pressure pad; 5, gland nut; 6, filler; 7, Packing seat; 8, screw rod; 9, valve gap; 10, the metallic elastic barrier film; 11, spool; 12, spring; 13, valve body.
Embodiment
Further describe below in conjunction with the technological scheme of accompanying drawing the utility model.
In the metal diaphragm stop valve valve body of the utility model valve seat is arranged; Have on the valve body 13 with valve body with the interconnective valve gap 9 of screw thread; Valve gap 9 screw axially arranged, be installed with the screw rod 8 that matches with the screw internal thread in the screw on the valve gap 9, there is handwheel 3 screw rod 8 outer ends; The periphery of the metallic elastic barrier film 10 of screw tip is pressed on the valve body 13 through the screw thread of screwing with valve gap 9, can prevent that the medium in the valve from revealing.Because metallic elastic barrier film 10 is flexible, does not influence screw rod and moves up and down.
The spool 11 that matches with valve seat is arranged in the valve body, and when moving on the rotary screw, when spool 11 leans on the elastic force of spring to move up, thereby Open valve when rotary screw moves down, leans on the pressure of screw rod 8 that spool 11 is moved down and throttle down.
The utility model can be realized triple seal, first resealing: spool and valve seat have adopted traditional conical surface seal structure, and reliability is high; When needs are communicated with, to carry on the last screw rod and make spool to top offset, the valve seat taper hole is opened, and realizes being communicated with; When closing, spool moves downward under the thrust of metallic elastic barrier film, first resealing; Second resealing: this is the metallic elastic diaphragm seal of core, can protect and not have inside and outside the leakage, is adapted to very much high-temperature high-pressure anti-corrosive erosion radiation proof and reveals, and this is the most critical sealing.The metallic elastic barrier film is pressed on the valve body, realizes upper-lower seal, and can be along with the motion of last screw rod, and moves up and down, and when realizing sealing, valve is opened and closed; Triple seal: adopt the packing seal of multilayer mats chip between valve gap top and the screw rod.
Claims (4)
1. a metal diaphragm stop valve comprises valve body, valve gap and screw rod; Be provided with valve seat in the valve body; Spool is set on the valve seat, and an end face of screw rod is to the spool setting, and the screw rod the other end is connected with rotating machinery after passing valve gap; And screw rod is connected with the valve gap screw-internal thread fit; One end of valve gap is connected with the valve body screw-thread fit, and the other end of valve gap then is connected with the screw rod packing seal, it is characterized in that: said valve seat cooperates for conical surface seal with the spool bottom; And valve gap and valve body junction are provided with the metallic elastic barrier film, and spool and screw rod are divided into the both sides of this metallic elastic barrier film.
2. metal diaphragm stop valve according to claim 1, it is characterized in that: said metallic elastic barrier film is a wave structure.
3. metal diaphragm stop valve according to claim 1 or claim 2, it is characterized in that: said metallic elastic barrier film is the nitinol elastic diaphragm.
4. like the said metal diaphragm stop valve of claim 3; It is characterized in that: the other end of said valve gap is connected through multilayer mats chip packing seal equipment with screw rod; Multilayer mats chip water-tight equipment comprises gland nut, and gland nut is arranged on the valve gap top, between gland nut and the valve gap pad is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200344778U CN202545835U (en) | 2012-02-03 | 2012-02-03 | Metal membrane stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200344778U CN202545835U (en) | 2012-02-03 | 2012-02-03 | Metal membrane stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545835U true CN202545835U (en) | 2012-11-21 |
Family
ID=47166473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200344778U Expired - Fee Related CN202545835U (en) | 2012-02-03 | 2012-02-03 | Metal membrane stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402473A (en) * | 2015-12-30 | 2016-03-16 | 刘宇坤 | Novel valve core structure |
| CN107907369A (en) * | 2017-10-20 | 2018-04-13 | 浙江大学 | A kind of deep-sea pressurize organic matter sampler |
-
2012
- 2012-02-03 CN CN2012200344778U patent/CN202545835U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402473A (en) * | 2015-12-30 | 2016-03-16 | 刘宇坤 | Novel valve core structure |
| CN107907369A (en) * | 2017-10-20 | 2018-04-13 | 浙江大学 | A kind of deep-sea pressurize organic matter sampler |
| CN107907369B (en) * | 2017-10-20 | 2019-11-08 | 浙江大学 | A kind of deep-sea pressure maintaining organic matter sampler |
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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: 20121121 Termination date: 20210203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |