CN2738050Y - Corrugated pipe metal sealing ball valve - Google Patents
Corrugated pipe metal sealing ball valve Download PDFInfo
- Publication number
- CN2738050Y CN2738050Y CN 200420079584 CN200420079584U CN2738050Y CN 2738050 Y CN2738050 Y CN 2738050Y CN 200420079584 CN200420079584 CN 200420079584 CN 200420079584 U CN200420079584 U CN 200420079584U CN 2738050 Y CN2738050 Y CN 2738050Y
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly spring
- corrugated pipe
- bellows
- ball valve
- 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
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- Lift Valve (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model relates to a corrugated pipe metal sealing ball valve, comprising a valve body, a ball, a valve lever, a valve seat, a press cap, a butterfly spring, a transmission device, a sealing member and a mounting component. The butterfly spring is press fitted between the valve and valve seat which are sealed connected by a corrugated pipe, which are solves the problems that the structure of between the valve seat and the valve body limits the temperature of the valve by using the O-shaped sealing ring. Meanwhile, the butterfly spring isolates the medium by the corrugated pipe, which improves the use reliability of the butterfly spring. The utility model has the advantages of high temperature resistance, high pressure resistance, wear resistance, bidirectional sailings, reliable sealing performance, etc. The corrugated pipe metal sealing ball valve is suitable for the medium of high temperature and the medium of the abrasion resistance and the triple valve and other working conditions.
Description
Technical field
The utility model relates to a kind of valve, specifically about a kind of metal seal ball valve.The utility model is applicable to high temperature, the high pressure in oil, chemical industry, smelting and nuclear industry field, the control switch of abrasiveness medium pipeline.
Background technique
The ball valve peace is divided according to its sealed nature, and soft sealing ball valve and hard seal ball valve are arranged.For high temperature, operating mode that abrasiveness is strong, must adopt the ball valve of hard sealing structure.So-called hard seal ball valve, be exactly to adopt metallic seal between spheroid and the sealing surface of seat fully, the ball valve of this complete metal sealing configuration, when in worst hot case, using, what at first need to solve is the high temperature expansion issues of metallic material, general hard seal ball valve when worst hot case uses, between spheroid and the sealing surface of seat often because of the expansion of material, make hoisting capacity very big, even it is dead to expand.For spheroid and the valve seat that prevents hard seal ball valve expands extremely, the most common structure is to adopt floating type valve seat at present, promptly between valve seat and valve body butterfly spring is set, and the high temperature that utilizes butterfly spring to absorb between spheroid and the valve seat expands.The hard seal ball valve of this structure will be provided with seal arrangement between its valve seat and valve body, generally be to adopt O-ring seals, and the heat resistance of O-ring seals has limited the serviceability temperature of valve.And butterfly spring is in the high temperature media for a long time, and its elasticity can gradually change, and influences the sealing reliability of valve.
In order to address these problems, it is 98217043.2 eccentric metal hard sealed ball valve that the applicant has designed a kind of patent No., its main structure characteristics are that spheroid adopts eccentric the connection with valve rod, leave the gap between spheroid suction side and the valve body, valve seat and valve body mechanical seal, solve the high temperature expansion issues effectively, can be applicable to temperature, superhigh temperature operating mode, but can not be suitable for the operating mode use of two way sealed.For this reason, it is 00216442.6 self-compensating type high-temperature metal hard-sealed ball valve that the applicant designs a kind of patent No. again, its valve seat is made to have and the cooperatively interact elastic sealing ring of curved surface of ball seal face, make spheroid and valve seat neither can expand dead by high temperature, be applicable to the two way sealed operating mode again, but the processing technology complexity of its valve base sealing curved surface, the very difficult sealing reliability that guarantees sealing surface is not so the patented product obtains implementing.
Summary of the invention
The purpose of this utility model is at the problem of the hard seal ball valve existence of existing various structures, and a kind of reliable bellows metal seal ball valve of sealability that is applicable to high temperature, high pressure, two way sealed is provided.
The technological scheme that realizes the utility model purpose comprises valve body, spheroid, valve rod, valve seat, gland, butterfly spring, transmission device, Sealing and assembling set, butterfly spring is fitted between valve body and the valve seat, mainly is that valve seat is connected by sylphon seal with valve body.
In the above technological scheme, also separation sleeve can be set between bellows and the medium channel.
The utility model beneficial effect compared with prior art is to be connected by sylphon seal between valve seat and the valve body, solved and adopted of the restriction of O-ring seals structure between prior art valve seat and the valve body the valve serviceability temperature, because butterfly spring and bellows all have elasticity, the high temperature that can absorb between spheroid and the valve seat expands.Simultaneously, bellows has improved the operational safety of butterfly spring with butterfly spring and media isolated, has advantages such as high temperature resistant, high pressure, two way sealed, sealability be reliable, and is applicable to the valve of threeway and the above structure of threeway.In addition, between bellows and medium channel, also separation sleeve can be set, prevent the erosion wearing and tearing of medium, prolong the working life of bellows, improve the sealing reliability of valve bellows.
Description of drawings
Fig. 1 is the utility model structure sectional view.
Embodiment
Bellows metal seal ball valve as shown in Figure 1 comprises valve body 1, spheroid 6, valve rod 7, valve seat 5, gland 8, butterfly spring 4, transmission device, Sealing and assembling set.Butterfly spring 8 is fitted between valve body and the valve seat, is connected sealing by bellows 3 between valve seat 5 and the valve body 1, and bellows 3 is with butterfly spring 4 and media isolated, to guarantee the functional reliability of butterfly spring 4.Bellows 3 adopts exotic material, and separation sleeve 2 is set between bellows 3 and medium channel, avoids bellows 3 to be subjected to the medium erosive wear.Separation sleeve 2 employings are high temperature resistant, high-abrasive material is made.One end of separation sleeve 2 and bellows 3 is welded on the valve body 1 together.Because butterfly spring 4 and bellows 3 have elasticity preferably, can be absorbed in the expansion of worst hot case lower sphere 6 and valve seat 5, both can high temperature not be expanded and stuck.The utility model can be made spheroid inlet-outlet bidirectional sealing configuration, also can make the above metal seal ball valve of threeway or threeway.Plating just goes for the abrasiveness medium operating mode with particle with high-abrasive material on ball seal face of the present utility model and sealing surface of seat.
Claims (3)
1, a kind of bellows metal seal ball valve, comprise valve body (1), spheroid (6), valve rod (7), valve seat (5), gland (8), butterfly spring (4), transmission device, Sealing and assembling set, butterfly spring (4) is fitted between valve body (1) and the valve seat (5), it is characterized in that valve seat (5) and valve body (1) are tightly connected by bellows (3).
2, bellows metal seal ball valve according to claim 1 is characterized in that being provided with between bellows (3) and the medium channel separation sleeve (2).
3, bellows metal seal ball valve according to claim 2 is characterized in that an end of bellows (3) and separation sleeve (2) is welded on the valve body (1) together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079584 CN2738050Y (en) | 2004-09-15 | 2004-09-15 | Corrugated pipe metal sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079584 CN2738050Y (en) | 2004-09-15 | 2004-09-15 | Corrugated pipe metal sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2738050Y true CN2738050Y (en) | 2005-11-02 |
Family
ID=35347960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420079584 Expired - Fee Related CN2738050Y (en) | 2004-09-15 | 2004-09-15 | Corrugated pipe metal sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2738050Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062231A (en) * | 2010-12-28 | 2011-05-18 | 吴军 | Hard-soft double-layer sealing combined valve seat of corrugated pipe |
| CN103906955A (en) * | 2011-10-25 | 2014-07-02 | 道达尔公司 | Isolating valve |
-
2004
- 2004-09-15 CN CN 200420079584 patent/CN2738050Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062231A (en) * | 2010-12-28 | 2011-05-18 | 吴军 | Hard-soft double-layer sealing combined valve seat of corrugated pipe |
| CN103906955A (en) * | 2011-10-25 | 2014-07-02 | 道达尔公司 | Isolating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |