CN102588616B - Stop valve for low-temperature liquid containers and assembling method thereof - Google Patents
Stop valve for low-temperature liquid containers and assembling method thereof Download PDFInfo
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- CN102588616B CN102588616B CN201210071253.9A CN201210071253A CN102588616B CN 102588616 B CN102588616 B CN 102588616B CN 201210071253 A CN201210071253 A CN 201210071253A CN 102588616 B CN102588616 B CN 102588616B
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- valve
- valve rod
- seal ring
- valve head
- stem mut
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Abstract
The invention relates to an assembly method of a stop valve for low-temperature liquid containers. The upper end of a valve stem (1) is connected with a handle (2), the lower end of the valve stem (1) is connected with a valve head component, and the valve head component is hermetically fit with a valve passage in a valve body (14). The stop valve is characterized in that the valve stem (1) disposed in a valve stem nut (16) is in movable fit with an inner cavity flange ring (22) of the valve stem nut (16), a first seal valve (15) is arranged on the valve stem (1) below the inner cavity flange ring (22), a second seal ring (5) is arranged on the valve stem (1) above the inner cavity flange ring (22), a fastener (17) is connected with the second seal ring (5) and the valve stem (1), a coating layer (23) is arranged on the surface of the valve stem (1), and an external thread of the valve stem nut (16) is connected with an internal thread of the valve body (4). The service life of the stop valve is prolonged greatly, the stop valve can be used for a long time without maintenance, parts of the stop valve are not required to be changed generally, and the valve head of the stop valve is excellent in sealing performance and convenient in change.
Description
Technical field:
The present invention is relevant with the valve of cryogenic liquid vessel.
Background technique:
Cryogenic globe valve is a kind of switch gear, is controlled by manual rotation.When manual rotation Open valve, cryogenic liquide is flowed into by the passage of valve body inner bottom part, pours in the low-temperature (low temperature) vessel connected; During manual rotation throttle down, cryogenic liquide stops pouring into.In the process, cryogenic liquide external leakage must not be had, in order to avoid handle place freezes stuck.Valve closes after death, also must not occur internal leakage phenomenon, cryogenic liquide be still had and pours into.
Existing cryogenic globe valve because of friction reason, can cause between Sealing and valve rod and produces impurity after long-term use, and occlusion is not tight, produces and leaks, and occurs frosting of freezing, the phenomenon that valve is stuck.
Summary of the invention:
The object of this invention is to provide a kind of structure simple, easy to manufacture, easy to operate, good seal performance, the cryogenic globe valve of long service life.
The present invention is achieved in that
For a stop valve for cryogenic liquid vessel, between valve rod 1 and valve body 14, there is seal ring, have coating 23 on the surface that valve rod 1 coordinates with seal ring.
Valve rod 1 upper end is connected with handle 2, lower end is connected with valve head assembly, valve passage in valve head assembly and valve body 14 is sealed and matched, valve rod 1 is positioned at Stem Mut 16, and coordinate with the inner chamber bulge loop 22 of Stem Mut 16 is dynamic, the valve rod 1 under inner chamber bulge loop 22 has the first seal ring 15, valve rod 1 on inner chamber bulge loop 22 has the second seal ring 5, fastening piece 17 is connected with the second seal ring 5 and valve rod 1, and there is coating 23 on valve rod 1 surface, and Stem Mut 16 has outside thread to be connected with the internal thread of valve body 14.
Coordinate with the first seal ring 15 for inclined-plane below the cross section of inner chamber bulge loop 22, inner chamber bulge loop 22 is that convex surface coordinates with the concave surface of the second seal ring 5 above, has ripple spring 3 between fastening piece 17 and handle 2.
Second seal ring 5 is overlapping two, and have the upper convex surface matched with concave surface, upper convex surface coordinates with the concave surface of fastening piece 17, and the cross section of upper convex surface and concave surface is umbrella shape.
Valve head assembly has the groove of valve head seat 13 and valve rod 1 or projection to be connected, coordinate with the inner chamber of connecting base 8, with Stem Mut 16 screw-internal thread fit, the outside thread of connecting base 8 is connected with the internal thread of connecting body 11, valve rod push jack 12 is connected with valve head seat 13 lower end, the lower camber side of valve rod push jack 12 and the upper plane contact of connecting body 11, the lower plane of connecting body 11 is connected with valve head sealing gasket 10 and is sealed and matched with the valve passage in valve body 14.
Coating 23 is identical with the material of seal ring.
For the assembly method of the stop valve of cryogenic liquid vessel, comprise the following steps:
1) connecting base 8 is passed valve head seat 13;
2) valve rod push jack 12 is aimed at bottom valve head seat 13 snap in, rap stuck;
3) valve head sealing gasket 10 is rapped in Snap joint body 11 without one of internal thread;
4) connecting base 8 screw-thread fit Connection Card there is is the connecting body 11 of valve head sealing gasket 10, formed the valve head assembly of static seal effect; Valve head seat 13 is screwed in Stem Mut 16 lower end screw;
5) valve rod 1 is put into the cavity of Stem Mut 16, its groove 6 coordinates with valve head seat 13 projection, then passes valve rod 1 with two valve stem packing rings 5;
6) fastening piece 17 through valve rod, firmly compress, make the second seal ring 5 snap into the end and contact with above inner chamber bulge loop 22, before this, the first seal ring 15 oneself put in place;
7) respectively by seal ring 4, compressing tablet 18, ripple spring 3 through valve rod 1, are pressed in directly over fastening piece 17 successively;
8) handle 2, handle pad 19, compression spring 20 are passed valve rod 1 successively, coordinate the outside thread on valve rod 1 to rivet tightly with M6 nut 21;
9) liquid inlet pipe 9 is welded with valve body 14;
10) by process 4) in the valve head assembly of assembling be stuck on the groove 6 of valve rod 1:, rotatable handle 2, makes valve head assembly easily rotate with handle and rotate;
11) packing ring 7 is stuck on Stem Mut 16;
12) Stem Mut 16 being stuck in packing ring 7 is put into the cavity of valve body 14, the outside thread of Stem Mut 16 and the screw-internal thread fit of valve body 14 cavity screw, until detect No leakage.
The present invention is coated with coating on valve rod 1, to protect the Sealing be directly through on valve rod 1, increases sealing effect simultaneously.After long-term use, this coating role is obvious, is more than 5 times that are not coated with cated like product working life.This coating avoids and is through Sealing on valve rod 1 directly and the valve rod friction of metal material, because the performance of coating material is identical with the performance of seal ring material or close, wear-resisting property is improved, and stops friction and produces impurity, avoid the gas leakage that this type of impurities accumulation too much causes.Solution when this situation appears in like product is dismounting related components, cleans.And valve installs rear dismounting inconvenience, change component more, very easily cause misoperation.The present invention substantially increases working life, substantially reaches the effect not safeguarding Long-Time Service, in the ordinary course of things without the need to changing component.Valve head sealability of the present invention is excellent, and replacement operation is easy.
Accompanying drawing illustrates:
Fig. 1 is structural drawing of the present invention.
Embodiment:
The present invention includes the Stem Mut 16 be connected with valve body 14 screw-internal thread fit, the valve head assembly be connected with valve rod 1, be coated with the first seal ring 15 and the second seal ring 5 having inner chamber bulge loop 22 to separate between cated valve rod 1 and Stem Mut 16.Valve rod 1 upper end is connected with handle 2, lower end is connected with valve head assembly, valve passage in valve head assembly and valve body 14 is sealed and matched, valve rod 1 is positioned at Stem Mut 16 and coordinates with the inner chamber bulge loop 22 of Stem Mut 16 is dynamic, valve rod 1 under inner chamber bulge loop 22 has the first seal ring 15, and the valve rod 1 on inner chamber bulge loop 22 has the second seal ring 5, and fastening piece 17 is connected with the second seal ring 5 and valve rod 1, there is coating 23 on valve rod 1 surface, and Stem Mut 16 has outside thread to be connected with the internal thread of valve body 14.
Coordinate with the first seal ring 15 for inclined-plane below the cross section of inner chamber bulge loop 22, inner chamber bulge loop 22 is that convex surface coordinates with the concave surface of the second seal ring 5 above, has ripple spring 3 between fastening piece 17 and handle 2.
Preferably, the second seal ring 5 is overlapping two, and have the upper convex surface matched with concave surface, upper convex surface coordinates with the concave surface of fastening piece 17, and the cross section of upper convex surface and concave surface is umbrella shape.Intensity and the tightness of sealing can be improved like this.
Valve head assembly has the groove of valve head seat 13 and valve rod 1 or projection to be connected, coordinate with the inner chamber of connecting base 8, with Stem Mut 16 screw-internal thread fit, the outside thread of connecting base 8 is connected with the internal thread of connecting body 11, valve rod push jack 12 is connected with valve head seat 13 lower end, the lower camber side of valve rod push jack 12 and the upper plane contact of connecting body 11, the lower plane of connecting body 11 is connected with valve head sealing gasket 10 and is sealed and matched with the valve passage in valve body 14.
Preferably, coating 23 is identical with the material of seal ring.
The concrete assembly process of the stop valve for cryogenic liquid vessel of the present invention is achieved in that
1) connecting base 8 is passed valve head seat 13;
2) valve rod push jack 12 is aimed at bottom valve head seat 13 snap in, rap stuck;
3) valve head sealing gasket 10 is rapped in Snap joint body 11 without one of internal thread;
4) connecting base 8 screw-thread fit Connection Card there is is the connecting body 11 of valve head sealing gasket 10, formed the valve head assembly of static seal effect; Valve head seat 13 is screwed in Stem Mut 16 lower end screw;
5) valve rod 1 is put into the cavity of Stem Mut 16, its groove 6 coordinates with valve head seat 13 projection, then passes valve rod 1 with two valve stem packing rings 5;
6) fastening piece 17 through valve rod, firmly compress, make the second seal ring 5 snap into the end and contact with above inner chamber bulge loop 22, before this, the first seal ring 15 oneself put in place;
7) respectively by seal ring 4, compressing tablet 18, ripple spring 3 through valve rod 1, are pressed in directly over fastening piece 17 successively;
8) handle 2, handle pad 19, compression spring 20 are passed valve rod 1 successively, coordinate the outside thread on valve rod 1 to rivet tightly with M6 nut 21;
9) liquid inlet pipe 9 is welded with valve body 14;
10) by process 4) in the valve head assembly of assembling be stuck on the groove 6 of valve rod 1:, rotatable handle 2, makes valve head assembly easily rotate with handle and rotate;
11) packing ring 7 is stuck on Stem Mut 16;
12) Stem Mut 16 being stuck in packing ring 7 is put into the cavity of valve body 14, the outside thread of Stem Mut 16 and the screw-internal thread fit of valve body 14 cavity screw, until detect No leakage.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection scope of the present invention.
Claims (1)
1. the assembly method for the stop valve of cryogenic liquid vessel, seal ring is had between the valve rod (1) of described stop valve and valve body (14), coating (23) is had on the surface that valve rod (1) coordinates with seal ring, valve rod (1) upper end is connected with handle (2), lower end is connected with valve head assembly, valve passage in valve head assembly and valve body (14) is sealed and matched, valve rod (1) is positioned at Stem Mut (16), coordinate with the inner chamber bulge loop (22) of Stem Mut (16) is dynamic, valve rod (1) under inner chamber bulge loop (22) has the first seal ring (15), valve rod (1) on inner chamber bulge loop (22) has the second seal ring (5), fastening piece (17) is connected with the second seal ring (5) and valve rod (1), there is coating (23) on valve rod (1) surface, Stem Mut (16) has outside thread to be connected with the internal thread of valve body (14), be that inclined-plane coordinates with the first seal ring (15) below the cross section of inner chamber bulge loop (22), inner chamber bulge loop (22) is that convex surface coordinates with the concave surface of the second seal ring (5) above, ripple spring (3) is had between fastening piece (17) and handle (2), second seal ring (5) is overlapping two, there is the upper convex surface matched with concave surface, upper convex surface coordinates with the concave surface of fastening piece (17), the cross section of upper convex surface and concave surface is umbrella shape, described valve head assembly has the groove of valve head seat (13) and valve rod (1) or projection to be connected, coordinate with the inner chamber of connecting base (8), with Stem Mut (16) screw-internal thread fit, the outside thread of connecting base (8) is connected with the internal thread of connecting body (11), valve rod push jack (12) is connected with valve head seat (13) lower end, the lower camber side of valve rod push jack (12) and the upper plane contact of connecting body (11), the lower plane of connecting body (11) is connected with valve head sealing gasket (10) to be sealed and matched with the valve passage in valve body (14), coating (23) is identical with the material of seal ring, it is characterized in that, said method comprising the steps of:
1) by connecting base (8) through valve head seat (13);
2) valve rod push jack (12) is aimed at valve head seat (13) bottom to snap in, rap stuck;
3) valve head sealing gasket (10) is rapped without internal thread in Snap joint body (11);
4) connecting base (8) screw-thread fit Connection Card there is is the connecting body (11) of valve head sealing gasket (10), formed the valve head assembly of static seal effect; Valve head seat (13) is screwed in Stem Mut (16) lower end screw;
5) valve rod (1) is put into the cavity of Stem Mut (16), its groove (6) coordinates with valve head seat (13) projection, then with two the second seal rings (5) through valve rod (1);
6) fastening piece (17) through valve rod, firmly compress, make the second seal ring (5) snap into the end and contact with above inner chamber bulge loop (22), before this, the first seal ring (15) oneself put in place;
7) respectively by seal ring (4), compressing tablet (18), ripple spring (3) through valve rod (1), are pressed in directly over fastening piece (17) successively;
8) handle (2), handle pad (19), compression spring (20) are passed valve rod (1) successively, coordinate the outside thread on valve rod (1) to rivet tightly with M6 nut (21);
9) liquid inlet pipe (9) is welded with valve body (14);
10) by process 4) in the valve head assembly of assembling be stuck on the groove (6) of valve rod (1), rotatable handle (2), makes valve head assembly easily rotate with handle and rotate;
11) packing ring (7) is stuck on Stem Mut (16);
12) Stem Mut (16) being stuck in packing ring (7) is put into the cavity of valve body (14), the outside thread of Stem Mut (16) and the screw-internal thread fit of valve body (14) cavity screw, until detect No leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210071253.9A CN102588616B (en) | 2012-03-09 | 2012-03-09 | Stop valve for low-temperature liquid containers and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210071253.9A CN102588616B (en) | 2012-03-09 | 2012-03-09 | Stop valve for low-temperature liquid containers and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102588616A CN102588616A (en) | 2012-07-18 |
| CN102588616B true CN102588616B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210071253.9A Expired - Fee Related CN102588616B (en) | 2012-03-09 | 2012-03-09 | Stop valve for low-temperature liquid containers and assembling method thereof |
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| Country | Link |
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| CN (1) | CN102588616B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221771A (en) * | 2015-10-29 | 2016-01-06 | 江南工业集团有限公司 | A kind of low temperature cut-off flow-limiting valve |
| CN105508626A (en) * | 2015-12-22 | 2016-04-20 | 四川省内江巨星水暖气五金器材厂 | Stop valve for low-temperature liquid container and assembly method of stop valve |
| CN114483965A (en) * | 2021-12-31 | 2022-05-13 | 北京航天益森风洞工程技术有限公司 | Valve gate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2718373A (en) * | 1951-04-25 | 1955-09-20 | Guy J Henry | Valve construction |
| US4815698A (en) * | 1988-05-02 | 1989-03-28 | Strahman Valves, Inc. | Hard seated valve |
| CN2218856Y (en) * | 1995-04-13 | 1996-01-31 | 张家平 | Low temperature stop valve |
| CN2450456Y (en) * | 2000-10-26 | 2001-09-26 | 上海气体阀门总厂 | Low-temp stop valve |
| CN2703925Y (en) * | 2004-05-28 | 2005-06-08 | 张家港市华瑞科技有限公司 | Low-temp. stop valve |
| WO2011088512A1 (en) * | 2010-01-22 | 2011-07-28 | Mcwin Technology Pty Ltd | A tap valve assembly |
| CN201934678U (en) * | 2011-01-30 | 2011-08-17 | 张家港富瑞特种装备股份有限公司 | Low-temperature shutoff valve |
| CN202001631U (en) * | 2011-01-10 | 2011-10-05 | 山东坚龙特种不锈钢股份有限公司 | Vacuum stop valve |
| CN202140576U (en) * | 2011-07-01 | 2012-02-08 | 宁波三安制阀有限公司 | Low-temperature stop valve |
-
2012
- 2012-03-09 CN CN201210071253.9A patent/CN102588616B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2718373A (en) * | 1951-04-25 | 1955-09-20 | Guy J Henry | Valve construction |
| US4815698A (en) * | 1988-05-02 | 1989-03-28 | Strahman Valves, Inc. | Hard seated valve |
| CN2218856Y (en) * | 1995-04-13 | 1996-01-31 | 张家平 | Low temperature stop valve |
| CN2450456Y (en) * | 2000-10-26 | 2001-09-26 | 上海气体阀门总厂 | Low-temp stop valve |
| CN2703925Y (en) * | 2004-05-28 | 2005-06-08 | 张家港市华瑞科技有限公司 | Low-temp. stop valve |
| WO2011088512A1 (en) * | 2010-01-22 | 2011-07-28 | Mcwin Technology Pty Ltd | A tap valve assembly |
| CN202001631U (en) * | 2011-01-10 | 2011-10-05 | 山东坚龙特种不锈钢股份有限公司 | Vacuum stop valve |
| CN201934678U (en) * | 2011-01-30 | 2011-08-17 | 张家港富瑞特种装备股份有限公司 | Low-temperature shutoff valve |
| CN202140576U (en) * | 2011-07-01 | 2012-02-08 | 宁波三安制阀有限公司 | Low-temperature stop valve |
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| Publication number | Publication date |
|---|---|
| CN102588616A (en) | 2012-07-18 |
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Effective date of registration: 20141224 Address after: 312400 Zhejiang city of Shaoxing province Shengzhou city streets Lake Yan Gong Dian Bei Lu Xi Si Nong No. 6 Applicant after: SHENGZHOU BAIEN TRADE CO., LTD. Address before: 321004 Zhejiang province Jinhua City Yingbin Road No. 688 Applicant before: Zhejiang Normal University |
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Owner name: RUAN YANLING ZHAO YANJIE ZHU RONGQUAN LI YONG WANG Effective date: 20150128 Owner name: QIN LICHEN Free format text: FORMER OWNER: SHENGZHOU BAIEN TRADING CO., LTD. Effective date: 20150128 |
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Inventor after: Qin Lichen Inventor after: Liu Shanmin Inventor after: Yu Kaixia Inventor after: Ruan Yanling Inventor after: Zhao Yanjie Inventor after: Zhu Rongquan Inventor after: Li Yong Inventor after: Wang Zhejing Inventor after: Liu Zandong Inventor after: Wang Yan Inventor after: Xu Yongping Inventor before: Zhu Chungeng |
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Free format text: CORRECT: ADDRESS; FROM: 312400 SHAOXING, ZHEJIANG PROVINCE TO: 466700 ZHOUKOU, HENAN PROVINCE Free format text: CORRECT: INVENTOR; FROM: ZHU CHUNGENG TO: QIN LICHEN RUAN YANLING ZHAO YANJIE ZHU RONGQUAN LI YONG WANG ZHEJING LIU ZANDONG WANG YAN XU YONGPING LIU SHANMIN YU KAIXIA |
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Effective date of registration: 20150128 Address after: West Huaiyang County of Zhoukou City, Henan province 466700 city county Kang Le Lu Xi Applicant after: Qin Lichen Applicant after: Liu Shanmin Applicant after: Yu Kaixia Applicant after: Ruan Yanling Applicant after: Zhao Yanjie Applicant after: Zhu Rongquan Applicant after: Li Yong Applicant after: Wang Zhejing Applicant after: Liu Zandong Applicant after: Wang Yan Applicant after: Xu Yongping Address before: 312400 Zhejiang city of Shaoxing province Shengzhou city streets Lake Yan Gong Dian Bei Lu Xi Si Nong No. 6 Applicant before: SHENGZHOU BAIEN TRADE CO., LTD. |
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Granted publication date: 20150311 Termination date: 20170309 |