CN209762310U - Low-temperature upper-mounted inclined-plane ball valve - Google Patents
Low-temperature upper-mounted inclined-plane ball valve Download PDFInfo
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- CN209762310U CN209762310U CN201920322651.0U CN201920322651U CN209762310U CN 209762310 U CN209762310 U CN 209762310U CN 201920322651 U CN201920322651 U CN 201920322651U CN 209762310 U CN209762310 U CN 209762310U
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Abstract
The utility model provides a low temperature upper assembling formula inclined plane ball valve, includes valve body, lip seal, graphite sealing ring, disk seat, sealing washer, spheroid, valve rod, valve gap, support, stop screw, the sealing washer is established in the disk seat, forms sealedly with the spheroid surface, disk seat inner circle surface is equipped with the metal sealing area, the disk seat back is equipped with graphite sealing ring and lip seal, forms twice with the valve body slide wedge face and seals. The beneficial effects of the utility model are that, it is not high to have solved the valve sealing performance under special operating mode, the low problem of security.
Description
Technical Field
The utility model relates to a low temperature facial make-up formula inclined plane ball valve.
Background
In recent decades, with the development of modern science and technology, the demand of low-temperature valves in engineering projects is increasing, and the low-temperature valves are widely used in the fields of chemical fertilizers, LNG, petrochemical industry and the like.
Except for liquid nitrogen and other liquid inert gases, most media controlled by the low-temperature valve are inflammable and explosive, and are gasified when heated or flashed, so that the volume is expanded rapidly, and leakage and explosion are easily caused. At present, most of low-temperature ball valves which are mainstream in the market have complicated valve seats, the requirement on machining precision is high, and the probability of valve failure is increased.
The sealing of the valve seat and the valve body of the existing low-temperature upper-mounted inclined-plane ball valve is generated by the extrusion deformation of a soft sealing ring embedded in a metal retainer, once a fire disaster happens, the soft sealing ring is burnt, the valve leaks, and the valve is not suitable for flammable and explosive low-temperature media; the whole valve is not provided with an anti-static structure, so that the valve is not suitable for flammable and explosive low-temperature media; the valve is not provided with a middle cavity pressure relief hole, and if the middle cavity of the valve body is abnormally boosted, the pressure of the middle cavity cannot be released, so that great potential safety hazard exists; the valve is limited by the aid of the packing gland bolt, and for the valve which is frequently opened and closed, the limit sheet repeatedly strikes the packing gland bolt to easily cause bolt looseness, so that the sealing performance of packing is affected, and medium leakage can be caused in serious conditions.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a low temperature facial make-up formula inclined plane ball valve with it is sealed reliable, the security is high.
The technical scheme of the utility model is that: the utility model provides a low temperature upper assembling formula inclined plane ball valve, includes valve body, lip seal, graphite sealing ring, disk seat, sealing washer, spheroid, valve rod, valve gap, support, stop screw, the sealing washer is established in the disk seat, forms sealedly with the spheroid surface, disk seat inner circle surface is equipped with the metal sealing area, the disk seat back is equipped with graphite sealing ring and lip seal, forms twice with the valve body slide wedge face and seals.
furthermore, antistatic devices are arranged on the ball body and the valve rod.
Further, all be equipped with the recess on spheroid and the valve rod, prevent that static device includes steel ball, spring one end and ball valve or the recess bottom butt on the valve rod, the spring other end and steel ball butt, steel ball and valve rod or valve gap butt.
Furthermore, a middle cavity pressure relief hole is formed in the valve body.
Further, the limiting screw is arranged on a support connected with the valve cover.
The utility model has the advantages that: the problems of low valve sealing performance and low safety under sudden working conditions of fire, abnormal pressure rise of the middle cavity, static electricity and the like are solved. When a fire disaster happens in the device, the soft sealing ring and the lip-shaped sealing ring on the back of the valve seat are burnt, but the metal sealing belt on the valve seat and the graphite sealing ring on the back of the valve seat can still ensure tight sealing, and the continuous diffusion of the fire disaster can be effectively prevented. If the condition of unusual pressure boost takes place for the valve body lumen, pressure will be released to upper reaches or low reaches pipeline from the lumen pressure release hole on the valve body, can effectively guarantee the security of valve and device. The limit screw is arranged on the support connected with the valve cover, and is different from a structure that the gland cover screw is used as the limit screw, so that the influence factors on the sealing performance of the packing when the valve is opened and closed by the handle are completely eliminated, and the service life of the valve can be effectively prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a partial enlarged view I;
FIG. 3 is a partial enlarged view II;
FIG. 4 is a partial enlarged view III;
Fig. 5 is a partially enlarged view iv.
In the figure: 1. a valve body; 2. a lip-shaped seal ring; 3. a graphite seal ring; 4. a valve seat; 5. a seal ring; 6. a sphere; 7. a valve stem; 8. a valve cover; 9. a support; 10. a limit screw; 11. a spring; 12. steel balls; 13. a middle cavity pressure relief hole.
Detailed Description
The utility model provides a low temperature facial make-up formula inclined plane ball valve, includes valve body, lip seal, graphite sealing ring, disk seat, sealing washer, spheroid, valve rod, valve gap, support, stop screw, the sealing washer is established in the disk seat, forms sealedly with the spheroid surface, disk seat inner circle surface is equipped with the metal sealing area, the disk seat back is equipped with graphite sealing ring and lip seal, forms twice with the valve body scarf and seals, all be equipped with antistatic device on spheroid and the valve rod, all be equipped with the recess on spheroid and the valve rod, antistatic device includes steel ball, spring, recess bottom butt on spring one end and ball valve or the valve rod, the spring other end and steel ball butt, steel ball and valve rod or valve gap butt, be equipped with lumen pressure release hole on the valve body, stop screw sets up on valve gap and valve cover connection's support.
Claims (5)
1. the utility model provides a low temperature upper assembling type inclined plane ball valve, includes valve body, lip seal, graphite seal ring, disk seat, sealing washer, spheroid, valve rod, valve gap, support, stop screw, its characterized in that, the sealing washer is established in the disk seat, forms sealedly with the spheroid surface, disk seat inner circle surface is equipped with the metal sealing area, the disk seat back is equipped with graphite seal ring and lip seal, forms twice sealedly with the valve body scarf.
2. A cryogenic top-loading beveled ball valve as claimed in claim 1, wherein said ball body and said valve stem are provided with antistatic means.
3. The low temperature top-loading inclined surface ball valve as claimed in claim 2, wherein the ball body and the valve rod are provided with grooves, the anti-static device comprises a steel ball and a spring, one end of the spring is abutted against the bottom of the groove on the ball valve or the valve rod, the other end of the spring is abutted against the steel ball, and the steel ball is abutted against the valve rod or the valve cover.
4. The low-temperature top-mounted inclined-surface ball valve as claimed in any 1 of claims 1 to 3, wherein a middle cavity pressure relief hole is formed in the valve body.
5. A low temperature top-loading inclined surface ball valve as claimed in any 1 of claims 1 to 3, wherein the limit screw is arranged on a bracket connected with the valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920322651.0U CN209762310U (en) | 2019-03-14 | 2019-03-14 | Low-temperature upper-mounted inclined-plane ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920322651.0U CN209762310U (en) | 2019-03-14 | 2019-03-14 | Low-temperature upper-mounted inclined-plane ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209762310U true CN209762310U (en) | 2019-12-10 |
Family
ID=68754755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920322651.0U Active CN209762310U (en) | 2019-03-14 | 2019-03-14 | Low-temperature upper-mounted inclined-plane ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209762310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798372A (en) * | 2019-03-14 | 2019-05-24 | 江苏神通阀门股份有限公司 | Formula beveled ball valve is filled on a kind of low temperature |
-
2019
- 2019-03-14 CN CN201920322651.0U patent/CN209762310U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798372A (en) * | 2019-03-14 | 2019-05-24 | 江苏神通阀门股份有限公司 | Formula beveled ball valve is filled on a kind of low temperature |
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