CN200982455Y - Valve bracket type self-pressurizing seal structure - Google Patents
Valve bracket type self-pressurizing seal structure Download PDFInfo
- Publication number
- CN200982455Y CN200982455Y CN 200620091485 CN200620091485U CN200982455Y CN 200982455 Y CN200982455 Y CN 200982455Y CN 200620091485 CN200620091485 CN 200620091485 CN 200620091485 U CN200620091485 U CN 200620091485U CN 200982455 Y CN200982455 Y CN 200982455Y
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- Prior art keywords
- valve
- support
- pressure
- self
- seal structure
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- Expired - Lifetime
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Abstract
The utility model provides a valve support pressure seal structure instead of a pretightening bolt, solving the art obstacle that a small-bore (DN15-50mm) high-heat high-pressure valve applies the self-pressure seal structure. The upper portion of the bonnet (3) of the utility model is arranged with a support (9). The inner hole of the support (9) is sleeved with a valve stem nut (11) and a valve stem (2) from up to the down, the middle portion of the support (9) is connected with the bonnet (3) with a screw thread, the support (9) is supported on a valve body (1) through a locking shim (7). The utility model makes the small-bore (DN15-50mm) high-heat high-pressure valve have compact structure and reduce the weight, thereby enlarging the utilization occasion of the small-bore (DN15-50mm) high-heat high-pressure valve.
Description
Technical field
The utility model is about the valve self sealing structure, the self-pressure-sealed structure of especially a kind of valve rack formula.
Background technique
Its body of high-temperature high pressure valve, lid one of Placement are self-pressure-sealed structures, utilize the pressure of medium self to reach the purpose of sealing, and pressure medium high sealing effect more is good more.Before valve cavity boosts, screw pretension bolt earlier valve gap is risen, between valve gap and wedge shape sealing ring and valve body and the wedge shape sealing ring, produce seal pressure on the sealing surface, form the initial sealing condition.When pressure medium rose, valve gap was moved up by the pressure medium effect, seal pressure between valve gap and wedge shape sealing ring and valve body and the wedge shape sealing ring, increasing and strengthen gradually with pressure medium.The high pressure valve that adopts self-pressure-sealed structure is heavy caliber (greater than DN50mm) valve normally, and small-bore (DN15-50mm) valve is if adopt self-pressure-sealed structure, for the pretension bolt that forms the initial sealing condition is set, need extra valve body and the valve gap boundary dimension of increasing, make the flange Connecting format of valve volume and weight ratio routine also want big.Therefore limited of the use of small-bore (DN15-50mm) high-temperature high pressure valve to self-pressure-sealed structure.
Summary of the invention
The purpose of this utility model is to overcome the technology barrier that restriction small-bore (DN15-50mm) high-temperature high pressure valve uses self-pressure-sealed structure, provides a kind of valve rack means of press seals structure to replace pretension bolt.
The utility model adopts following technological scheme: appliance stand above valve gap, overlapping Stem Mut and valve rod in the support from top to bottom, and with being threaded, support is supported on the valve body by lock washer between mid-stent and the valve gap.
The utility model makes small-bore (DN15-50mm) high-temperature high pressure valve compact structure, weight saving; Enlarged the using scope of self-pressure-sealed structure.
Description of drawings
Fig. 1 is the self-pressure-sealed structure general assembly drawing of valve rack formula
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in detail
Among Fig. 1, be movingly with valve rod 2 in the valve gap 3, by rotation valve rod nut 10, valve rod 2 moves up and down, and opens or throttle down.Wedge shape sealing ring 4 seals between valve body 1 and valve gap 3.Between secondary valve gap 6 and the valve body 1 is to be threaded.Revolute valve gap 6 is pressed on wedge shape sealing ring between valve body 1 and the valve gap 3 by air ring 5.Appliance stand 9 above valve gap 3, and support 9 endoporus are overlapping Stem Mut 10 and valve rod 2 from top to bottom, and with being threaded, support 9 is supported on the valve body 1 by lock washer 7 between support 9 middle parts and the valve gap 3.When turning clockwise support 9, force valve gap 3 to move up by screw thread, dog wedge V-shaped ring 4, wedge shape sealing ring 4 are subjected to secondary valve gap 6 and air ring 5 spacing can not moving, and just produce the pretension specific pressure on the fitting surface of itself and valve gap 3 and valve body 1.
Behind the seal pressure between the desired valve body 1 of rotation formation valve design, valve gap 3 and the seal ring 4 of support 9 relative valve gaps 3, with support 9, valve body 1 and secondary valve gap 6 lockings, prevent relatively rotating with lock washer 7.Key 8 only limits relatively rotating between secondary valve gap 6 and the valve gap 3, does not relatively move and do not limit it.When rotation valve rod nut 10, valve rod 2 is moved up, during Open valve, valve gap 3 is moved up by the pressure medium effect, seal pressure between valve gap 3 and wedge shape sealing ring 4 and the valve body 1, increasing and strengthen gradually with pressure medium.
Claims (3)
1, the self-pressure-sealed structure of a kind of valve rack formula comprises valve body (1), valve gap (3) and wedge shape sealing ring (4), it is characterized in that, at valve gap (3) top appliance stand (9).
2, the self-pressure-sealed structure of valve rack formula according to claim 1, it is characterized in that, support (9) endoporus is overlapping Stem Mut (10) and valve rod (2) from top to bottom, and with being threaded, support (9) is supported on the valve body (1) between support (9) middle part and the valve gap (3).
3, according to the self-pressure-sealed structure of the described valve rack formula of claim 1, it is characterized in that support (9) is supported on the valve body (1) by lock washer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091485 CN200982455Y (en) | 2006-06-07 | 2006-06-07 | Valve bracket type self-pressurizing seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620091485 CN200982455Y (en) | 2006-06-07 | 2006-06-07 | Valve bracket type self-pressurizing seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200982455Y true CN200982455Y (en) | 2007-11-28 |
Family
ID=38909613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620091485 Expired - Lifetime CN200982455Y (en) | 2006-06-07 | 2006-06-07 | Valve bracket type self-pressurizing seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200982455Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359636A (en) * | 2011-08-25 | 2012-02-22 | 浙江欧拉姆阀门科技有限公司 | Multi-turn valve in threaded connection with support |
| CN104879548A (en) * | 2015-05-28 | 2015-09-02 | 扬中市第一蝶阀厂有限公司 | Leak-proof valve |
-
2006
- 2006-06-07 CN CN 200620091485 patent/CN200982455Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359636A (en) * | 2011-08-25 | 2012-02-22 | 浙江欧拉姆阀门科技有限公司 | Multi-turn valve in threaded connection with support |
| CN104879548A (en) * | 2015-05-28 | 2015-09-02 | 扬中市第一蝶阀厂有限公司 | Leak-proof valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071128 |
|
| EXPY | Termination of patent right or utility model |