CN2699070Y - Low-temperature cut-off valve - Google Patents
Low-temperature cut-off valve Download PDFInfo
- Publication number
- CN2699070Y CN2699070Y CN 200420027444 CN200420027444U CN2699070Y CN 2699070 Y CN2699070 Y CN 2699070Y CN 200420027444 CN200420027444 CN 200420027444 CN 200420027444 U CN200420027444 U CN 200420027444U CN 2699070 Y CN2699070 Y CN 2699070Y
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- Prior art keywords
- valve
- gland
- pressed
- low
- sleeve
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- Expired - Fee Related
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Abstract
The utility model discloses a low-temperature liquid gas storage equipment and a relative low-temperature cut-off valve for the pipe. The low-temperature cut-off valve is mainly composed of a valve body provided with a valve cover, a hand wheel is fixed mounted on a valve lever, and the valve lever is matched with the valve cover by a screw thread; a valve core is fixed at the lower end of the valve lever, and the valve lever sleeve is fixed with the valve cover; the pressing nut is matched with the valve lever by the screw thread, and the pressing nut is pressed on the press sleeve; the press sleeve makes the V-shaped sealing ring pressed on the check ring which is between the valve lever and the valve lever sleeve. The utility model is characteristerized in that a spring is positioned between the pressing nut and the press sleeve, the spring is pressed on the pressing sleeve. The low-temperature cut-off valve has the advantage of good sealing effect.
Description
Technical field
The utility model relates to a kind of warehousing and transportation facilities of liquefied gas at low temp and cryogenic globe valve in the associated pipe of being applied to.
Background technique
Cryogenic globe valve is mainly used in the warehousing and transportation facilities and associated pipe of liquid oxygen, liquid argon, liquid nitrogen and LNG Liquefied natural gas liquefied gas at low temp such as (LNG), as low-temperature pressure containers such as basin, tank car, tank containers, mainly the liquefied gas at low temp in the low-temperature pressure container pipeline mobile played the opening and closing effect.This valve requirement switch under low temperature (196 ℃) state is smooth and easy, does not have and leaks.The structure of tradition cryogenic globe valve mainly comprises: valve body, valve gap is installed on the valve body, handwheel is fixedly mounted on the valve rod, valve rod matches with valve gap by screw thread, spool is fixed on the lower end of valve rod, and valve stem casing and valve gap fix, and gland nut matches with valve stem casing by screw thread, gland nut is pressed on the gland, and gland is pressed in " V " RunddichtringO on the back-up ring between valve rod and the valve stem casing.Come rotation valve rod by rotation hand wheel, and can drive spool and move up and down, thereby realize opening or closing the purpose of valve.The shortcoming of the cryogenic globe valve of said structure is: when the valve access times too much, perhaps be subjected under the situation of low temperature effect overlong time, permanent deformation can take place and lose part elasticity in " V " RunddichtringO, between valve rod and " V " RunddichtringO, form micro-gap, thereby cause micro-leakage, this leakage is more obvious in the rotation process of valve rod.So the client is in use for some time, constantly be wrenched gland nut and make gland constantly compress " V " RunddichtringO, impel " V " RunddichtringO to keep the better seal state; Do not only very bothering like this, and sealing effect is not satisfactory.
Summary of the invention
At the problems referred to above, the utility model will provide a kind of sealing effect better cryogenic globe valve.
For achieving the above object, the technical solution adopted in the utility model is: described cryogenic globe valve, mainly comprise: valve body, valve gap are installed on the valve body, and handwheel is fixedly mounted on the valve rod, valve rod matches with valve gap by screw thread, spool is fixed on the lower end of valve rod, and valve stem casing and valve gap fix, and gland nut matches with valve stem casing by screw thread, gland nut is pressed on the gland, and gland is pressed in " V " RunddichtringO on the back-up ring between valve rod and the valve stem casing; Be characterized in: be provided with spring between gland nut and gland, spring is pressed on the gland.
The further technological scheme of the utility model is: offer slotted eye in gland, be provided with " O " RunddichtringO in the slotted eye, " O " RunddichtringO is close to stem surface.
The utility model has the advantages that: use cryogenic globe valve described in the utility model, have the effect of better sealing.
Description of drawings
Fig. 1 is the structural representation of cryogenic globe valve described in the utility model;
Fig. 2 is the structure for amplifying schematic representation of the B part among Fig. 1.
Mode of execution
Below in conjunction with the drawings and specific embodiments technological scheme described in the utility model and working principle thereof and advantage are further described.
As shown in Figure 1 and Figure 2, cryogenic globe valve described in the utility model, mainly comprise: valve body 8, valve gap 6 are installed on the valve body 8, and handwheel 1 is fixedly mounted on the valve rod 4, valve rod 4 matches with valve gap 6 by screw thread, spool 7 is fixed on the lower end of valve rod 4, and valve stem casing 5 fixes with valve gap 6, and gland nut 2 matches with valve stem casing 5 by screw thread, gland nut 2 is pressed on the gland 9, and gland 9 is pressed in " V " RunddichtringO 12 on the back-up ring 3 between valve rod 4 and the valve stem casing 5; Be characterized in: be provided with spring 10 between gland nut 2 and gland 9, spring 10 is pressed on the gland 9.The cryogenic globe valve of said structure is identical with the using method of the cryogenic globe valve of conventional construction; Its difference is: owing to be provided with spring 10, therefore gland 9 remains certain pressure to " V " RunddichtringO 12, make between " V " RunddichtringO 12 and the valve rod 4 and remain the better seal state, therefore whole cryogenic globe valve has just had good sealing effect.In actual fabrication, can also in gland 9, offer slotted eye, be provided with " O " RunddichtringO 11 in the slotted eye again, and make " O " RunddichtringO 11 be close to the surface of valve rod 4, like this, whole valve just has better sealing effect.
Claims (2)
1, cryogenic globe valve, mainly comprise: valve body, valve gap is installed on the valve body, handwheel is fixedly mounted on the valve rod, and valve rod matches with valve gap by screw thread, and spool is fixed on the lower end of valve rod, valve stem casing and valve gap fix, gland nut matches with valve stem casing by screw thread, and gland nut is pressed on the gland, and gland is pressed in " V " RunddichtringO on the back-up ring between valve rod and the valve stem casing; It is characterized in that: be provided with spring between gland nut and gland, spring is pressed on the gland.
2, cryogenic globe valve according to claim 1 is characterized in that: offer slotted eye in gland, be provided with " O " RunddichtringO in the slotted eye, " O " RunddichtringO is close to stem surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027444 CN2699070Y (en) | 2004-05-28 | 2004-05-28 | Low-temperature cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027444 CN2699070Y (en) | 2004-05-28 | 2004-05-28 | Low-temperature cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2699070Y true CN2699070Y (en) | 2005-05-11 |
Family
ID=34771656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420027444 Expired - Fee Related CN2699070Y (en) | 2004-05-28 | 2004-05-28 | Low-temperature cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2699070Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864104A (en) * | 2015-05-22 | 2015-08-26 | 宋春光 | Safe one-way stop valve |
| CN106090246A (en) * | 2016-08-17 | 2016-11-09 | 江苏海纳机电集团有限公司 | A kind of hand stop valve with sealing compensation |
-
2004
- 2004-05-28 CN CN 200420027444 patent/CN2699070Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864104A (en) * | 2015-05-22 | 2015-08-26 | 宋春光 | Safe one-way stop valve |
| CN106090246A (en) * | 2016-08-17 | 2016-11-09 | 江苏海纳机电集团有限公司 | A kind of hand stop valve with sealing compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081212 Address after: Jiangsu city in Zhangjiagang Province Economic Development Zone zhoujiaqiao morning new road, zip code: 215637 Patentee after: Zhangjiagang Furui Special Equipment Co., Ltd. Address before: Jiangsu city in Zhangjiagang Province Economic Development Zone zhoujiaqiao morning new road, zip code: 215637 Patentee before: Zhangjiagang Huarui Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHANGJIAGANG FURUITE EQUIPMENT CO., LTD. Free format text: FORMER OWNER: ZHANGJIAGANG CITY,HUARUI TECHNOLOGY CO., LTD. Effective date: 20081212 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050511 Termination date: 20130528 |