CN205401792U - Cryrogenic upper assembling type bellows ball valve - Google Patents
Cryrogenic upper assembling type bellows ball valve Download PDFInfo
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- CN205401792U CN205401792U CN201620144788.8U CN201620144788U CN205401792U CN 205401792 U CN205401792 U CN 205401792U CN 201620144788 U CN201620144788 U CN 201620144788U CN 205401792 U CN205401792 U CN 205401792U
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Abstract
The utility model provides a cryrogenic upper assembling type bellows ball valve, which comprises the following components: a valve body, set up the spheroid in the valve body inner chamber, it stretches out with the spheroid linkage and above following the valve body still to be provided with the valve rod in the valve body, the spheroid is provided with the disk seat in the axial both sides of valve body, the disk seat is sealed vice with the spheroiding, the disk seat is provided with pretensioning means in the direction that the spheroid is opposite, pretensioning means includes spring and spring holder, the spring holder is installed between the axial terminal surface of valve body and disk seat, the spring sets up in the spring holder, the disk seat passes through the bellows with the valve body and realizes the radial seal, the one end and the disk seat welding of bellows, the other end and the welding of screw thread seat, it is connected with valve body detachable to be provided with sealed screw thread on the screw thread seat, it is sealed through the sealing member between screw thread seat and the valve body. The beneficial effects of the utility model are that: adopt bellows sealing between disk seat and the valve body, and can realize the detachability of bellows disk seat, and then solve present bellows ball valve maintenance difficulty, the higher problem of cost of labor.
Description
Art
This utility model relates to a kind of ball valve, particularly to a kind of bellows ball valve.
Background technology
Along with the continuous expansion in domestic liquefied natural gas market, the application market of deep cooling valve also becomes more wide therewith, domestic low temperature industry for the demand of deep cooling valve also in continuous growth.
At present in the operating mode of LNG industry, upper dress formula fixing ball valve more can meet the instructions for use of operating mode.And most upper dress formula fixing ball valve is because factors such as material, structure and techniques, it is impossible to solving the internal hemorrhage due to trauma problem between upper-mounting type ball valve valve seat and valve body, internal hemorrhage due to trauma phenomenon ratio is more serious.In prior art, upper-mounting type ball valve use corrugated tube valve seat be typically all by bellows-welding on valve body, after corrugated tube valve seat goes wrong, tend not to carry out detachable maintaining, integral demounting human cost, time cost are huge.
Summary of the invention
For overcoming the drawbacks described above of existing upper dress formula bellows ball valve, this utility model provides a kind of upper-mounting type ball valve adopting dismountable bellows valve holder structure.
nullThis utility model solves its technical problem and employed technical scheme comprise that dress formula bellows ball valve on a kind of deep cooling，Including valve body，Body cavity arranges spheroid，The valve rod linking with spheroid and extending above from valve body it is additionally provided with in valve body,Valve rod is supported with spacing by valve gap，Spheroid is provided with valve seat in the axial both sides of valve body，Valve seat forms sealing pair with spheroid，Valve seat is provided with pre-tightening mechanism in spheroid opposite direction，Pre-tightening mechanism includes spring and spring base，Spring base is arranged between valve body and the axial end of valve seat，Spring is arranged in spring base，Valve seat and valve body realize radial seal by corrugated tube，One end of corrugated tube is welded with valve seat，The other end welds with threaded block，Being provided with sealing on threaded block, screw thread is dismountable with valve body is connected，Sealed by sealing member between threaded block and valve body，Seal screw thread and form dual-seal with sealing member.
Further technical scheme is, installs a stop pin on valve seat with threaded block, and stop pin inserts in threaded block after running through valve seat.
The beneficial effects of the utility model are:
1, adopting sylphon seal between valve seat and valve body, bellows-welding, on valve seat with threaded block, produces point without any leakage；
2, threaded block arranges sealing screw thread, on the one hand with realize dismountable connection between valve body, and then realize the detachable of corrugated tube valve seat entirety, adopt on the other hand and seal helicitic texture, it is possible to achieve sealing property preferably, additionally, sealing member it is additionally provided with between threaded block and valve body, such as gasket seal, it is possible to realize double sealing structure, it is ensured that sealing property.
3, stop pin runs through and inserts after valve seat in threaded block, it is ensured that threaded block will not be formed installing, in the process of dismounting and between valve seat and rotate against, and then ensures that corrugated tube does not produce distortion, the effective reliability ensureing sylphon seal.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is the structural representation of embodiment；
Fig. 2 is A place enlarged drawing in Fig. 1.
In figure: 1. valve rod；2. valve gap；3. spheroid；4. valve seat；5. valve body；6. stop pin；7. gasket seal；8. corrugated tube；9. spring；10. spring base；11. threaded block；12. sealing screw thread.
Detailed description of the invention
nullSuch as Fig. 1、Shown in 2，Dress formula bellows ball valve on a kind of deep cooling，Including valve body 5，Valve body 5 inner chamber arranges spheroid 3，The valve rod 1 linking with spheroid 3 and extending above from valve body 5 it is additionally provided with in valve body 5,Valve rod 1 is supported with spacing by valve gap 2，Spheroid 3 is provided with valve seat 4 in the axial both sides of valve body 5，Valve seat 4 and spheroid 3 form sealing pair，Valve seat 4 is provided with pre-tightening mechanism in spheroid 3 opposite direction，Pre-tightening mechanism includes spring 9 and spring base 10，Spring base 10 is arranged between the axial end of valve body 5 and valve seat 4，Spring 9 is arranged in spring base 10，Valve seat 4 realizes radial seal with valve body 5 by corrugated tube 8，One end of corrugated tube 8 is welded with valve seat 4，The other end welds with threaded block 11，Being provided with sealing on threaded block 11, screw thread 12 is dismountable with valve body 5 is connected，Sealed by gasket seal 7 between threaded block 11 and valve body 5，Seal screw thread 12 and gasket seal 7 forms the dual-seal between threaded block 11 and valve body 5.Meanwhile, installing a stop pin 6 on valve seat 4 with threaded block 11, stop pin 6 inserts in threaded block 11 after running through valve seat 4.
Valve seat is when installation, maintenance, it is only necessary to threaded block is backed out the integral replacing that can realize valve seat.
Claims (2)
- null1. a deep cooling fills formula bellows ball valve，Including valve body，Body cavity arranges spheroid，The valve rod linking with spheroid and extending above from valve body it is additionally provided with in described valve body,Valve rod is supported with spacing by valve gap，Described spheroid is provided with valve seat in the axial both sides of valve body，Valve seat forms sealing pair with spheroid，It is characterized in that: described valve seat is provided with pre-tightening mechanism in spheroid opposite direction，Described pre-tightening mechanism includes spring and spring base，Described spring base is arranged between valve body and the axial end of valve seat，Described spring is arranged in spring base，Described valve seat and valve body realize radial seal by corrugated tube，One end of described corrugated tube is welded with valve seat，The other end welds with threaded block，Being provided with sealing on described threaded block, screw thread is dismountable with valve body is connected，Sealed by sealing member between described threaded block and valve body，Described sealing screw thread forms dual-seal with sealing member.
- 2. dress formula bellows ball valve on deep cooling as claimed in claim 1, it is characterised in that: installing a stop pin on described valve seat with threaded block, described stop pin inserts in threaded block after running through valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144788.8U CN205401792U (en) | 2016-02-26 | 2016-02-26 | Cryrogenic upper assembling type bellows ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144788.8U CN205401792U (en) | 2016-02-26 | 2016-02-26 | Cryrogenic upper assembling type bellows ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401792U true CN205401792U (en) | 2016-07-27 |
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ID=56424193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620144788.8U Active CN205401792U (en) | 2016-02-26 | 2016-02-26 | Cryrogenic upper assembling type bellows ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205401792U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735934A (en) * | 2019-10-16 | 2020-01-31 | 方正阀门集团有限公司 | Bidirectional floating butterfly valve |
| CN113719633A (en) * | 2021-09-29 | 2021-11-30 | 江苏神通阀门股份有限公司 | Corrugated pipe track ball valve |
| CN113719634A (en) * | 2021-09-29 | 2021-11-30 | 江苏神通阀门股份有限公司 | Top-mounted pipeline ball valve |
-
2016
- 2016-02-26 CN CN201620144788.8U patent/CN205401792U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735934A (en) * | 2019-10-16 | 2020-01-31 | 方正阀门集团有限公司 | Bidirectional floating butterfly valve |
| CN113719633A (en) * | 2021-09-29 | 2021-11-30 | 江苏神通阀门股份有限公司 | Corrugated pipe track ball valve |
| CN113719634A (en) * | 2021-09-29 | 2021-11-30 | 江苏神通阀门股份有限公司 | Top-mounted pipeline ball valve |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |