CN102588616A - 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
- Publication number
- CN102588616A CN102588616A CN2012100712539A CN201210071253A CN102588616A CN 102588616 A CN102588616 A CN 102588616A CN 2012100712539 A CN2012100712539 A CN 2012100712539A CN 201210071253 A CN201210071253 A CN 201210071253A CN 102588616 A CN102588616 A CN 102588616A
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- valve
- valve rod
- seal ring
- valve head
- handle
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- 239000007788 liquid Substances 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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Abstract
The invention relates to 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, by manual Spin Control.When manually rotarily opening valve, cryogenic liquide is flowed into by the passage of valve body inner bottom part, pours in the low-temperature (low temperature) vessel that connects; Manually during the rotary closing valve, cryogenic liquide stops to pour into.In this process, the cryogenic liquide external leakage must not be arranged, in order to avoid that the handle place freezes is stuck.Valve closes after death, also the internal leakage phenomenon must not occur, cryogenic liquide is still had pour into.
Existing cryogenic globe valve can cause between Sealing and valve rod and produce impurity because of the friction reason after long-term the use, and interlock is not tight, produces to leak, and the frosting of freezing occurs, the phenomenon that valve is stuck.
Summary of the invention:
The purpose of this invention is to provide a kind of simple in structure, easy to manufacture, easy to operate, good seal performance, the cryogenic globe valve of long service life.
The present invention is achieved in that
A kind of stop valve that is used for cryogenic liquid vessel has seal ring between valve rod 1 and the valve body 14, on the surface that valve rod 1 cooperates with seal ring coating 23 is arranged.
Valve rod 1 upper end is connected with handle 2, and the lower end is connected with the valve head assembly, and the valve passage in valve head assembly and the valve body 14 is sealed and matched; The inner chamber bulge loop 22 that valve rod 1 is positioned at valve body nut 16 and bolt and nut 16 movingly; Valve rod 1 under the inner chamber bulge loop 22 has first seal ring 15, and the valve rod 1 on the inner chamber bulge loop 22 has second seal ring 5, and fastening piece 17 is connected with valve rod 1 with second seal ring 15; There is coating 23 on valve rod 1 surface, and bolt and nut 16 has outside thread to be connected with the internal thread of valve body 4.
The following of the cross section of inner chamber bulge loop 22 is that the inclined-plane cooperates with first seal ring 15, is that convex surface cooperates with the concave surface of second seal ring 5 above the bulge loop, fastening piece 17 and handle 2 it, ripple spring 3 is arranged.
Second seal ring 5 is overlapping two, and the last convex surface that matches with concave surface is arranged, and last convex surface cooperates with the concave surface of fastening piece 17, and the cross section of last convex surface and concave surface is a umbrella shape.
The valve head assembly has valve head seat 13 to be connected with the groove or the projection 6 of valve rod 1; Cooperate 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, and valve rod push jack 12 is connected with valve head seat 13 lower ends; The last plane contact of the lower camber side of push jack 12 and connecting body 11 is connected with valve head sealing gasket 10 and is sealed and matched with valve 14 interior valve passages on the lower plane of connecting body 11.
Be used for the assembly method of the stop valve of cryogenic liquid vessel, may further comprise the steps:
1) connecting base 8 is passed valve head seat 13;
2) valve rod push jack 12 is aimed at valve head seat 13 bottoms and snap in, rap stuck;
3) valve head sealing gasket 10 is rapped one that snaps in no internal thread in the connecting body 11;
4) connecting base 8 screw-thread fit Connection Cards there is the connecting body 11 of valve head sealing gasket 10, has formed the valve head assembly of static seal effect; Valve head seat 13 is screwed in Stem Mut 16 lower end screws;
5) valve rod 1 is put into the cavity of Stem Mut 16, its groove 6 cooperates with valve head seat 13 projections, passes valve rod 1 with two valve stem packing rings 5 then;
6) pass valve rod to fastening piece 17, firmly compress, valve stem packing ring 5 is contacted above snapping into the end and bulge loop 22, before this, oneself puts in place seal ring 15;
7) respectively with seal ring 4, compressing tablet 18, ripple spring 3 pass valve rod 1 successively, are pressed in directly over the fastening piece 17;
8) handle 2, handle pad 19, compression spring 20 are passed valve rod 1 successively, cooperate the outside thread on the valve rod 1 to rivet tightly with M6 nut 21;
9) with liquid inlet pipe 9 and valve body 14 welding;
10) with process 4) in the assembling the valve head assembly be stuck on the groove 6 of valve rod 1:, rotatable handle 2 can easily rotate the valve head assembly with handle;
11) packing ring 7 is stuck on the Stem Mut 16;
The Stem Mut 16 that 12) will be stuck in packing ring 7 is put into the cavity of valve body 14.The screw-internal thread fit of the outside thread of Stem Mut 16 and valve body 14 cavitys is screwed, and leaks until detecting not have.
The present invention is coated with coating on valve rod 1, to protect the Sealing that directly is through on the valve rod 1, increases sealing effect simultaneously.After long-term the use, this coating role is obvious, is more than 5 times of like product working life that do not scribble coating.This coating avoided being through on the valve rod 1 Sealing directly and the valve rod friction of metal material; Because the performance of coating material is identical or close with the performance of seal ring material; Wear-resisting property is improved, and stops friction-produced impurity, the gas leakage of avoiding this type of impurities accumulation too much to cause.Solution when this situation appears in like product is the dismounting related components, cleans.And valve installs back dismounting inconvenience, and it is more to change component, very easily causes misoperation.The present invention has improved working life greatly, reaches the effect of not safeguarding long-term use basically, need not to change component in the ordinary course of things.Valve head sealability of the present invention is good, changes easy and simple to handle.
Description of drawings:
Fig. 1 is a structural drawing of the present invention.
Embodiment:
The present invention includes the Stem Mut 16 that is connected with valve body 14 screw-internal thread fit, the valve head assembly that is connected with valve rod 1.First seal ring 15 and second seal ring 5 that have bulge loop 22 to separate between valve rod 1 and the Stem Mut 16 of coating have been scribbled.Valve rod 1 upper end is connected with handle 2, and the lower end is connected with the valve head assembly, and the valve passage in valve head assembly and the valve body 14 is sealed and matched; It is characterized in that inner chamber bulge loop 22 that valve rod 1 is positioned at valve body nut 16 and bolt and nut 16 movingly; Valve rod 1 under the inner chamber bulge loop 22 has first seal ring 15, and the valve rod 1 on the inner chamber bulge loop 22 has second seal ring 5, and fastening piece 17 is connected with valve rod 1 with second seal ring 15; There is coating 23 on valve rod 1 surface, and bolt and nut 16 has outside thread to be connected with the internal thread of valve body 4.
The following of the cross section of inner chamber bulge loop 22 is that the inclined-plane cooperates with first seal ring 15, is that convex surface cooperates with the concave surface of second seal ring 5 above the bulge loop, between fastening piece 17 and the handle 2 ripple spring 3 arranged.
Preferably, second seal ring 5 is overlapping two, and the last convex surface that matches with concave surface is arranged, and last convex surface cooperates with the concave surface of fastening piece 17, and the cross section of last convex surface and concave surface is a umbrella shape.Can improve the intensity and the tightness of sealing like this.
The valve head assembly has valve head seat 13 to be connected with the groove or the projection 6 of valve rod 1; Cooperate 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, and valve rod push jack 12 is connected with valve head seat 13 lower ends; The last plane contact of the lower camber side of push jack 12 and connecting body 11 is connected with valve head sealing gasket 10 and is sealed and matched with valve body 14 interior valve passages on the lower plane of connecting body 11.
Preferably, coating 23 is identical with the material of seal ring.
The concrete assembly process that is used for the stop valve of 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 valve head seat 13 bottoms and snap in, rap stuck;
3) valve head sealing gasket 10 is rapped one that snaps in no internal thread in the connecting body 11;
4) connecting base 8 screw-thread fit Connection Cards there is the connecting body 11 of valve head sealing gasket 10, has formed the valve head assembly of static seal effect; Valve head seat 13 is screwed in Stem Mut 16 lower end screws;
5) valve rod 1 is put into the cavity of Stem Mut 16, its groove 6 cooperates with valve head seat 13 projections, passes valve rod 1 with two valve stem packing rings 5 then;
6) pass valve rod to fastening piece 17, firmly compress, valve stem packing ring 5 is contacted above snapping into the end and bulge loop 22, before this, oneself puts in place seal ring 15;
7) respectively with seal ring 4, compressing tablet 18, ripple spring 3 pass valve rod 1 successively, are pressed in directly over the fastening piece 17;
8) handle 2, handle pad 19, compression spring 20 are passed valve rod 1 successively, cooperate the outside thread on the valve rod 1 to rivet tightly with M6 nut 21;
9) with liquid inlet pipe 9 and valve body 14 welding;
10) with process 4) in the assembling the valve head assembly be stuck on the groove 6 of valve rod 1:, rotatable handle 2 can easily rotate the valve head assembly with handle;
11) packing ring 7 is stuck on the Stem Mut 16;
The Stem Mut 16 that 12) will be stuck in packing ring 7 is put into the cavity of valve body 14.The screw-internal thread fit of the outside thread of Stem Mut 16 and valve body 14 cavitys is screwed, and leaks until detecting not have.
The above is merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any variation or replacement of expecting without creative work all should be encompassed within protection scope of the present invention.
Claims (2)
1. a stop valve that is used for cryogenic liquid vessel has seal ring between valve rod (1) and the valve body (14), it is characterized in that on the surface that valve rod (1) cooperates with seal ring coating (23) being arranged; Valve rod (1) upper end is connected with handle (2), and the lower end is connected with the valve head assembly, and the valve passage in valve head assembly and the valve body (14) is sealed and matched; It is characterized in that inner chamber bulge loop (22) that valve rod (1) is positioned at valve body nut (16) and bolt and nut (16) movingly, the valve rod (1) under the inner chamber bulge loop (22) has first seal ring (15), and the valve rod (1) on the inner chamber bulge loop (22) has second seal ring (5); Fastening piece (17) is connected with valve rod (1) with second seal ring (15), and there is coating (23) on valve rod (1) surface, and bolt and nut (16) has outside thread to be connected with the internal thread of valve body (4); The following of the cross section of inner chamber bulge loop (22) is that the inclined-plane cooperates with first seal ring (15), is that convex surface cooperates with the concave surface of second seal ring (5) above the bulge loop, between fastening piece (17) and the handle (2) ripple spring (3) arranged; Second seal ring (5) is overlapping two; The last convex surface that matches with concave surface is arranged, and last convex surface cooperates with the concave surface of fastening piece (17), and the cross section of last convex surface and concave surface is a umbrella shape; Said valve head assembly has valve head seat (13) to be connected with the groove or the projection (6) of valve rod (1); Cooperate 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 last plane contact of the lower camber side of push jack (12) and connecting body (11) is connected with valve head sealing gasket (10) and is sealed and matched with the interior valve passage of valve body (14) on the lower plane of connecting body (11), coating (23) is identical with the material of seal ring.
2. the assembly method that is used for the stop valve of cryogenic liquid vessel as claimed in claim 1 is characterized in that may further comprise the steps:
1) connecting base (8) is passed valve head seat (13);
2) valve rod push jack (12) is aimed at valve head seat (13) bottom and snap in, rap stuck;
3) valve head sealing gasket (10) is rapped one that snaps in the middle no internal thread of connecting body (11);
4) connecting base (8) screw-thread fit Connection Card there is the connecting body (11) of valve head sealing gasket (10), has 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) cooperates with valve head seat (13) projection, passes valve rod (1) with two valve stem packing rings (5) then;
6) pass valve rod to fastening piece (17), firmly compress, make valve stem packing ring (5) snap into the end and contact above the bulge loop (22), before this, oneself puts in place seal ring (15);
7) respectively with seal ring (4), compressing tablet (18), ripple spring (3) pass valve rod (1) successively, are pressed in directly over the fastening piece 17;
8) handle (2), handle pad (19), compression spring (20) are passed valve rod (1) successively, cooperate the outside thread on the valve rod (1) to rivet tightly with M6 nut (21);
9) with liquid inlet pipe (9) and valve body (14) welding;
10) with process 4) in the assembling the valve head assembly be stuck on the groove (6) of valve rod (1):, rotatable handle 2 can easily rotate the valve head assembly with handle;
11) packing ring (7) is stuck on the Stem Mut (16);
The Stem Mut (16) that 12) will be stuck in packing ring (7) is put into the cavity of valve body (14).The screw-internal thread fit of the outside thread of Stem Mut (16) and valve body (14) cavity is screwed, and leaks until detecting not have.
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 true CN102588616A (en) | 2012-07-18 |
| CN102588616B CN102588616B (en) | 2015-03-11 |
Family
ID=46477683
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN102588616B (en) |
Cited By (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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102588616B (en) | 2015-03-11 |
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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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