CN2594572Y - High-pressure ball valves - Google Patents
High-pressure ball valves Download PDFInfo
- Publication number
- CN2594572Y CN2594572Y CN 02292182 CN02292182U CN2594572Y CN 2594572 Y CN2594572 Y CN 2594572Y CN 02292182 CN02292182 CN 02292182 CN 02292182 U CN02292182 U CN 02292182U CN 2594572 Y CN2594572 Y CN 2594572Y
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- CN
- China
- Prior art keywords
- valve
- pressure ball
- valve body
- ball
- pressure
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- Expired - Lifetime
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Abstract
The utility model discloses a high-pressure ball valve, which relates to a valve, particularly the design and manufacturing technique of a high-pressure valve used in petrochemical industries. The high-pressure ball valve is composed of a valve body, a valve cover, a ball body, a valve rod, a valve seat and sealing elements, wherein, the valve cover is provided with fireproof edges, and the valve rod is provided with an O-shaped seal ring. The O-shaped seal ring and a graphite pad are arranged between the valve body and the valve cover, the back side of the valve seat is provided with a slope, and an outer circle of the valve seat is provided with a deformed groove. A position near the graphite pad of the high-pressure ball valve composed of the valve body and the valve cover which are connected by screw bolts is provided with a teflon pad, and the contact surface between the high-pressure ball valve composed of the valve body and the valve cover which are connected by screw bolts and the valve cover near the ball body is provided with a chamfering. The utility model can be used for ensuring the seal between the valve body and the valve cover as well as between the valve rod and the valve body, the fireproof edges on the valve cover can ensure that the ball body can be sealed with the valve body when the valve seat is melted during accident, and the requirement of great torque can be satisfied for the high-pressure valve.
Description
(1) technical field:
The utility model relates to valve, refers in particular to the design and fabrication technology of the high pressure valve that petrochemical industry uses.
(2) background technique:
In existing valve manufacturing, domestic almost do not have manufactory can make the ball valve that bears pressure level, and reach reliable in quality.Main cause is that structure and material is selected for use and does not reach a perfect combination.The pressure of the ordinary ball valve of domestic production now is mostly below 100 kilograms, and the ball valve of this low-pressure is not high to the requirement of structure and material.So under the low-pressure user mode, defective on can exposed structure, but under the working state of high pressure, original structure can not satisfy usage requirement, it is destroyed valve seat to occur, and valve switch does not have moment of torsion, does not have decrement between valve seat and the spheroid, sealing is unstable between valve body and the valve gap, stem packing part seal leakage and cause valve not work.This wherein has the problem of valve seat the selection of material, and the problem of valve seat construction design is also arranged; And the material selection of valve rod, spheroid, the cooperating structure problem between valve body and valve gap, valve rod and the valve body.Decrement between valve seat and the spheroid is crossed conference and is caused the opening and closing of valve very difficult; The too small valve that can make again of decrement can not seal.The sealing strip excircle dimension of valve seat is greater than the width of spheroid, and the ratio of valve base sealing bandwidth and spherical crown part is improper, and these all can cause valve seat destroyed and cause valve not work.No matter be threaded or bolt connects, leakage accident often takes place in use for some time between valve body and the valve gap, these all are because the surface of contact machining accuracy between valve body and the valve gap is good inadequately, and the size of gasket seal and material be improper to be caused.
(3) summary of the invention:
The purpose of this utility model provides and a kind ofly can still can seal tight high-pressure ball valve under condition of high voltage.
The technical solution of the utility model is: be made of valve body, valve gap, spheroid, valve rod, valve seat and Sealing, the fire prevention lip is arranged on valve gap, the O RunddichtringO is housed on valve rod, O RunddichtringO and Graphite pad are housed between valve body and valve gap, there is the inclined-plane at the back side at valve seat, and the distortion groove is arranged on the cylindrical of valve seat.The bolted high-pressure ball valve of valve body and valve gap is equipped with teflon gasket at the Graphite pad adjacent.High-pressure ball valve valve body that valve body and valve gap are threaded and valve gap have chamfering near on the surface of contact of spheroid.
The beneficial effects of the utility model are: increase the O RunddichtringO on valve rod; The employing O RunddichtringO of valve body and valve gap, Graphite pad sealing.Can guarantee the sealing between valve rod and the valve body like this, can guarantee the sealing between valve body and the valve gap again, and Graphite pad also has fire-proof function, when in use meeting accident, can guarantee that also ball valve temporarily can work.Fire prevention procheilon structure is arranged on the valve gap, guarantee that valve seat melts and can also seal between spheroid and the valve body when accident.The sealing strip excircle dimension of valve seat is less than the width of ball, such structure can guarantee ball valve when the opening and closing position and the decrement between the valve seat be consistent, make the valve seat can not be destroyed.There is the inclined-plane at the back side at valve seat, leaves the elastic recoil space, guarantees that valve seat has the local deformation space when being compressed, thereby does not destroy sealing.Valve seat adopts polyether-ketone and two kinds of materials of reinforced tetrafluoro, and these two kinds of materials are better than other materials aspect the high pressure bearing.High strength and wear resistance Austenitic Stainless Steel is preferably selected in valve rod and spheroid selection for use as far as possible.Can satisfy the requirement of the high pulling torque of high pressure valve like this, can have good corrosion resistance again, require the free of contamination requirement of medium to satisfy in medicine, the food service industry.
(4) description of drawings:
Fig. 1 is the bolted ball-valve structure schematic representation of the utility model valve body and valve gap.
Fig. 2 is the ball-valve structure schematic representation that the utility model valve body and valve gap are threaded.
Fig. 3 is the local enlarged diagram of the A of Fig. 1.
Fig. 4 is the local enlarged diagram of the B of Fig. 2.
(5) embodiment:
The bolted high-pressure ball valve of valve body and valve gap as shown in figures 1 and 3, constitute by valve body, valve gap, spheroid, valve rod, valve seat and Sealing, fire prevention lip 2 is arranged on valve gap 1, O RunddichtringO 4 is housed on valve rod 3, O RunddichtringO 6 and Graphite pad 7 are housed between valve body 5 and valve gap 1, teflon gasket 8 are housed at the Graphite pad adjacent.There is the inclined-plane at the back side at valve seat 9, and distortion groove 10 is arranged on the cylindrical of valve seat.
The high-pressure ball valve that valve body and valve gap are threaded such as Fig. 2 and shown in Figure 4 have chamfering 11 at valve body and valve gap near on the surface of contact of spheroid, and all the other are identical with embodiment 1.Adopt three seals, guarantee normal and unusual service condition lower seal.Valve seat adopts polyether-ketone and two kinds of materials of reinforced tetrafluoro, and valve body, valve gap, valve rod and spheroid are selected high strength and wear resistance Austenitic Stainless Steel preferably for use, and the O RunddichtringO is a fluorine rubber.Adopt machining technique just can produce, requirement on machining accuracy is than higher.Splendid through experiment effect.
Claims (6)
1, high-pressure ball valve is made of valve body, valve gap, spheroid, valve rod, valve seat and Sealing, it is characterized in that: fire prevention lip [2] is arranged on valve gap [1].
2, high-pressure ball valve according to claim 1 is characterized in that: O RunddichtringO [4] is housed on valve rod [3].
3, high-pressure ball valve according to claim 1 is characterized in that: O RunddichtringO [6] and Graphite pad [7] are housed between valve body [5] and valve gap [1].
4, high-pressure ball valve according to claim 1 is characterized in that: there is the inclined-plane at the back side at valve seat [9], and distortion groove [10] is arranged on the cylindrical of valve seat.
5, high-pressure ball valve according to claim 3 is characterized in that: valve body is connected with the valve gap bolt, at the Graphite pad adjacent teflon gasket [8] is housed.
6, high-pressure ball valve according to claim 1 is characterized in that: valve body and valve gap are threaded, and near on the surface of contact of spheroid chamfering [11] are arranged at valve body and valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292182 CN2594572Y (en) | 2002-12-27 | 2002-12-27 | High-pressure ball valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292182 CN2594572Y (en) | 2002-12-27 | 2002-12-27 | High-pressure ball valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594572Y true CN2594572Y (en) | 2003-12-24 |
Family
ID=33750693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02292182 Expired - Lifetime CN2594572Y (en) | 2002-12-27 | 2002-12-27 | High-pressure ball valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594572Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126292B (en) * | 2007-09-07 | 2010-09-08 | 唐山金三顺装饰材料有限公司 | Fire-proof seal protection structure for fire-proof lock |
| CN103104714A (en) * | 2011-11-12 | 2013-05-15 | 江苏神通阀门股份有限公司 | High temperature and high pressure ball valve |
| CN103753211A (en) * | 2014-01-26 | 2014-04-30 | 嘉兴艾迪西暖通科技有限公司 | Vice machine of multi-station rotary ball valve assembly machine |
| CN104653811A (en) * | 2015-02-27 | 2015-05-27 | 宁波华成阀门有限公司 | Anti-burning welded ball valve |
| CN105276222A (en) * | 2015-11-25 | 2016-01-27 | 江苏华太电力仪表有限公司 | High-temperature and high-pressure socket welding type ball valve |
| CN110541948A (en) * | 2019-05-28 | 2019-12-06 | 徐周颖 | High platform fire-proof ball valve |
-
2002
- 2002-12-27 CN CN 02292182 patent/CN2594572Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126292B (en) * | 2007-09-07 | 2010-09-08 | 唐山金三顺装饰材料有限公司 | Fire-proof seal protection structure for fire-proof lock |
| CN103104714A (en) * | 2011-11-12 | 2013-05-15 | 江苏神通阀门股份有限公司 | High temperature and high pressure ball valve |
| CN103753211A (en) * | 2014-01-26 | 2014-04-30 | 嘉兴艾迪西暖通科技有限公司 | Vice machine of multi-station rotary ball valve assembly machine |
| CN103753211B (en) * | 2014-01-26 | 2016-04-27 | 嘉兴艾迪西暖通科技有限公司 | A kind of multi-station turning formula ball valve assembly machine slave |
| CN104653811A (en) * | 2015-02-27 | 2015-05-27 | 宁波华成阀门有限公司 | Anti-burning welded ball valve |
| CN105276222A (en) * | 2015-11-25 | 2016-01-27 | 江苏华太电力仪表有限公司 | High-temperature and high-pressure socket welding type ball valve |
| CN110541948A (en) * | 2019-05-28 | 2019-12-06 | 徐周颖 | High platform fire-proof ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Jin Ying Document name: Notice of conformity |
|
| C32 | Full or partial invalidation of patent right | ||
| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 20070829 Decision number of declaring invalidation: 10440 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121227 Granted publication date: 20031224 |