CN203718011U - Low-temperature ball valve - Google Patents
Low-temperature ball valve Download PDFInfo
- Publication number
- CN203718011U CN203718011U CN201420034674.9U CN201420034674U CN203718011U CN 203718011 U CN203718011 U CN 203718011U CN 201420034674 U CN201420034674 U CN 201420034674U CN 203718011 U CN203718011 U CN 203718011U
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- China
- Prior art keywords
- valve body
- ball
- mounting hole
- side valve
- spring mounting
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- Expired - Fee Related
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Abstract
The utility model discloses a low-temperature ball valve which comprises a main valve body, a side valve body, a ball, a valve cover component and a valve rod. An outlet passage and a ball mounting cavity are arranged on the main valve body, an inlet passage is arranged on the side valve body, the ball is mounted in the ball mounting cavity, the side valve body is fixed on the main valve body and coats the ball, a plurality of spring mounting holes extending in a direction identical with the medium flowing direction, and an annular embedding groove are arranged in the side valve body, the spring mounting holes are communicated with the embedding groove, a compensation spring and a gasket are mounted in each spring mounting hole, a ball liner is mounted in the embedding groove and is in extrusion sealing fit with the ball, the ball and the ball mounting cavity are sealed through the ball liner, the valve cover component is fixed on the main valve body, and the valve rod penetrates the valve cover component and is fixedly connected with the ball. Compensation force on the ball liner is increased, and even if the ball liner contracts and deforms at low temperature, the low-temperature ball valve still has good sealing performance, thereby being suitable for being used in a pipeline for low-temperature media.
Description
Technical field
The utility model relates to a kind of cryogenic ball valve, refers to that especially one is applied to liquid oxygen, and liquid argon, in the warehousing and transportation facilities and pipeline of the liquefied gas at low temp such as liquid nitrogen and LNG Liquefied natural gas (LNG), plays the cryogenic ball valve of connection and closing function to cryogenic media.
Background technique
Ball valve generally comprises main valve body, side valve body, spheroid, bonnet assemblies and valve rod at present, and sphere installation is in main valve body and side valve body, and fixing between main valve body and side valve body, bonnet assemblies is fixed on main valve body and side valve body, and valve rod is fixedly connected with spheroid.Between spheroid and main valve body and side valve body, serve as a contrast sealing by ball sealer, so, in the time that the ball valve of this structure uses in low temperature medium pipeline, there are the following problems for ball valve: cryogenic ball valve ball lining material mostly is polytetrafluoroethylene (PTFE), poly-trifluoro-ethylene (PCTFE) etc.Can there is very large contraction deformation in nonmetallic material, so just cause the pretightening force between ball lining and spheroid to occur significantly to decline under ultralow temperature, and sealability is reduced, and even produces and reveal.
Model utility content
Technical problem to be solved in the utility model is: a kind of cryogenic ball valve is provided, and this cryogenic ball valve has increased the equilibrant force to ball lining, even if ball lining low-temperature shrink distortion cryogenic ball valve still has good sealability, thereby is suitable in the pipeline of cryogenic media.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of cryogenic ball valve, comprise main valve body, side valve body, spheroid, bonnet assemblies and valve rod, and on described main valve body, be provided with outlet passage and sphere installation chamber; On described side valve body, be provided with inlet channel; Described sphere installation is in sphere installation chamber, described side valve body is fixed on main valve body and by spheroid and is coated, on described side valve body, be provided with spring mounting hole, an annular caulking groove that several and media flow direction are extended in the same way, this spring mounting hole is communicated with described caulking groove, counterbalance spring and liner are all installed in each spring mounting hole, ball lining is installed in described caulking groove, and described ball lining coordinates with spheroid crush seal; Between described spheroid and sphere installation chamber, also serve as a contrast sealing by ball, described bonnet assemblies is fixed on main valve body, and described valve rod runs through described bonnet assemblies and is fixedly connected with described spheroid.
As the preferred scheme of one, described spring mounting hole is evenly distributed on side valve body.
As the preferred scheme of one, on described side valve body, be also provided with several and the vertically extending secondary spring mounting hole of media flow direction, this secondary spring mounting hole is communicated with caulking groove; In each secondary spring mounting hole, be provided with auxiliary pad and secondary spring, this secondary spring applies to ball lining the elastic force that points to inlet channel center line.
As the preferred scheme of one, described secondary spring mounting hole is evenly distributed on side valve body.
As the preferred scheme of one, between described side valve body and main valve body, bolt is fixed, and the fitting surface that contacts of described side valve body and main valve body is all arranged to steppedly, between this side valve body and main valve body, seal ring is set.
Adopt after technique scheme, effect of the present utility model is: on the side valve body due to this cryogenic ball valve, be provided with several spring mounting holes, ball on side valve body lining will be subject to the equilibrant force of counterbalance spring so, in the time that temperature is very low, ball lining meeting contraction deformation on ball lining and main valve body on side valve body, the elastic deformation amount of self is reduced, and now equilibrant force will impel spheroid and ball lining all to closely cooperate, and uses thereby met on cryogenic media pipeline.In addition, due to the existence of equilibrant force, therefore, and the pretightening force between reduction spheroid that when mounted can be suitable and ball lining, thus the unlatching moment of torsion of ball valve can be reduced, make its unlatching smooth and easy.
Again because described spring mounting hole is evenly distributed on side valve body, therefore, it is more even that ball is lining with the compensation elasticity rate of the counterbalance spring being subject to, and further improves sealing reliability.
Owing to being also provided with several and the vertically extending secondary spring mounting hole of media flow direction on described side valve body, this secondary spring mounting hole is communicated with caulking groove again; In each secondary spring mounting hole, be provided with auxiliary pad and secondary spring, this secondary spring applies to ball lining the elastic force that points to inlet channel center line.This secondary spring provides auxiliary elastic force to ball lining, makes ball serve as a contrast the equilibrant force being subject to more reasonable, and sealing reliability further improves.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model embodiment's structure sectional view;
In accompanying drawing: 1. spheroid; 2. side valve body; 3. ball lining; 4. liner; 5. counterbalance spring; 6. secondary spring; 7. main valve body; 8. valve rod; 9. bolt; 10. bonnet assemblies; 11. outlet passages; 12. inlet channeles.
Embodiment
Below by specific embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of cryogenic ball valve, comprises main valve body 7, side valve body 2, spheroid 1, bonnet assemblies 10 and valve rod 8, is provided with outlet passage 11 and spheroid 1 installation cavity on described main valve body 7; On described side valve body 2, be provided with inlet channel 12, fastening by bolt 9 between described side valve body 2 and main valve body 7, the fitting surface that contacts of described side valve body 2 and main valve body 7 is all arranged to stepped, between this side valve body 2 and main valve body 7, seal ring is set, between side valve body 2 and main valve body 7, is arranged to stepped be convenient to assembling and sealing; Described spheroid 1 is installed in spheroid 1 installation cavity, this spheroid 1 is coated by described side valve body 2 and main valve body 7, on described side valve body 2, be provided with spring mounting hole, an annular caulking groove that several and media flow direction are extended in the same way, described spring mounting hole is evenly distributed on side valve body 2, this spring mounting hole is communicated with described caulking groove, counterbalance spring 5 and liner 4 are all installed in each spring mounting hole, ball lining 3 is installed in described caulking groove, described ball lining 3 coordinates with spheroid 1 crush seal; Between described spheroid 1 and spheroid 1 installation cavity, also serve as a contrast 3 sealings by ball, described bonnet assemblies 10 is fixed on main valve body 7 by bolt 9, described valve rod 8 runs through described bonnet assemblies 10 and is fixedly connected with described spheroid 1, between this valve rod 8 and bonnet assemblies 10, is sealed and matched.
In addition, be also provided with several and vertically extending secondary spring 6 mounting holes of media flow direction on described side valve body 2, described secondary spring 6 mounting holes are evenly distributed on side valve body 2, and these secondary spring 6 mounting holes are communicated with caulking groove; In each secondary spring 6 mounting holes, be provided with auxiliary pad 4 and secondary spring 6, this secondary spring 6 applies to ball lining 3 elastic force that points to inlet channel 12 center lines.
Working principle of the present utility model is: this cryogenic ball valve is connected in cryogenic media pipeline, because cryogenic media temperature is very low, therefore, ball lining 3 is as the nonmetal effect contraction deformation owing to expanding with heat and contract with cold, thereby cause the pretightening force between ball lining 3 and spheroid 1 to occur significantly to decline, now utilize the ball lining 3 on the elastic force squeeze side valve body 2 between secondary spring 6 and counterbalance spring 5, make tight seal between this ball lining 3 and spheroid 1, so just improve sealing reliability, avoided the phenomenon of seal failure.In addition, this cryogenic ball valve is owing to having adopted counterbalance spring 5 and secondary spring 6, and therefore, the pretightening force in the time of assembling between spheroid 1 and ball lining 3 can suitably reduce; The unlatching moment of torsion of ball valve is reduced.
Claims (5)
1. a cryogenic ball valve, comprises main valve body, side valve body, spheroid, bonnet assemblies and valve rod, it is characterized in that: on described main valve body, be provided with outlet passage and sphere installation chamber; On described side valve body, be provided with inlet channel; Described sphere installation is in sphere installation chamber, described side valve body is fixed on main valve body and by spheroid and is coated, on described side valve body, be provided with spring mounting hole, an annular caulking groove that several and media flow direction are extended in the same way, this spring mounting hole is communicated with described caulking groove, counterbalance spring and liner are all installed in each spring mounting hole, ball lining is installed in described caulking groove, and described ball lining coordinates with spheroid crush seal; Between described spheroid and sphere installation chamber, also serve as a contrast sealing by ball, described bonnet assemblies is fixed on main valve body, and described valve rod runs through described bonnet assemblies and is fixedly connected with described spheroid.
2. a kind of cryogenic ball valve as claimed in claim 1, is characterized in that: described spring mounting hole is evenly distributed on side valve body.
3. a kind of cryogenic ball valve as claimed in claim 2, is characterized in that: on described side valve body, be also provided with several and the vertically extending secondary spring mounting hole of media flow direction, this secondary spring mounting hole is communicated with caulking groove; In each secondary spring mounting hole, be provided with auxiliary pad and secondary spring, this secondary spring applies to ball lining the elastic force that points to inlet channel center line.
4. a kind of cryogenic ball valve as claimed in claim 3, is characterized in that: described secondary spring mounting hole is evenly distributed on side valve body.
5. a kind of cryogenic ball valve as claimed in claim 4, is characterized in that: between described side valve body and main valve body, bolt is fixed, and the fitting surface that contacts of described side valve body and main valve body is all arranged to steppedly, between this side valve body and main valve body, seal ring is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034674.9U CN203718011U (en) | 2014-01-21 | 2014-01-21 | Low-temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034674.9U CN203718011U (en) | 2014-01-21 | 2014-01-21 | Low-temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718011U true CN203718011U (en) | 2014-07-16 |
Family
ID=51157162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420034674.9U Expired - Fee Related CN203718011U (en) | 2014-01-21 | 2014-01-21 | Low-temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775674A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | Low-temperature spherical valve |
| CN113187940A (en) * | 2021-05-18 | 2021-07-30 | 江苏盛丰机械科技有限公司 | Split type valve body with quick detach mechanism |
-
2014
- 2014-01-21 CN CN201420034674.9U patent/CN203718011U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775674A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | Low-temperature spherical valve |
| CN113187940A (en) * | 2021-05-18 | 2021-07-30 | 江苏盛丰机械科技有限公司 | Split type valve body with quick detach mechanism |
| CN113187940B (en) * | 2021-05-18 | 2024-01-09 | 江苏盛丰机械科技有限公司 | Split valve body with quick-release mechanism |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20190121 |