CN201037542Y - Liquefied gas steel cylinder valve - Google Patents
Liquefied gas steel cylinder valve Download PDFInfo
- Publication number
- CN201037542Y CN201037542Y CNU2007200371134U CN200720037113U CN201037542Y CN 201037542 Y CN201037542 Y CN 201037542Y CN U2007200371134 U CNU2007200371134 U CN U2007200371134U CN 200720037113 U CN200720037113 U CN 200720037113U CN 201037542 Y CN201037542 Y CN 201037542Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- liquefied gas
- end portion
- axle housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
A liquefied gas cylinder valve comprises a valve body, a valve rod, a rotary connection piece, a valve core, a gland nut, and a hand wheel arranged on the upper end of the valve rod. The lower end of the valve rod is connected with the valve core through the rotary connection piece; an axle casing is arranged between the valve body and the valve rod; the upper end of the axle casing is in hermetic seal with the upper end of the valve body; the lower end of the axle casing is provided with a through hole where the valve rod can pass through; the valve rod is also provided with a tab; a sealing washer is arranged between the tab and the clamp nut, and a sealing component arranged in a cavity formed by the tab and the axle casing consists of at least one pair of rubber sealing washers and a pair of ceramic or graphite sealing washers arranged between the rubber sealing washers. When rotating, the valve handle drives the stacked ceramic or graphite sealing washers to rotate relatively, thereby enabling the sealing surface of the sealing washers to become smoother with rubbing and bringing about good sealing performance to effectively prevent liquefied gas leakage. The utility model has a simple structure, easy manufacture and assembly, low cost and long service life.
Description
Technical field
The utility model relates to a kind of valve, relates in particular to a kind of valve that is used for liquefied petroleum ga steel cylinder, LNG Liquefied natural gas steel cylinder.
Background technique
The present cylinder for liquefied gas valve that uses, in order to prevent gas leak, one or more rubber seal are set on valve rod seal, for example Chinese utility model patent ZL95227807.3 discloses the valve mechanism that a kind of position that is positioned at gland nut at valve rod is provided with the sealing of twice O type rubber seal.Yet rubber seal is is in use worn and torn easily, is worn out, thereby causes gas leak, and the serious harm user's is safe in utilization.
The model utility content
The technical problems to be solved in the utility model provide a kind of can prevent effectively gas leakage and simple in structure, cost is low, the cylinder for liquefied gas valve of long service life.
For solving the problems of the technologies described above, a kind of cylinder for liquefied gas valve of the present utility model, comprise valve body, valve rod, sheet is rotationally connected, spool, gland nut and the handwheel that is loaded on the valve rod upper end portion, the underpart of valve rod is connected with spool by the sheet that is rotationally connected, its improvement is: also be provided with axle housing between described valve body and described valve rod, be hermetic seal between the upper end portion of this axle housing and the upper end portion of valve body, the underpart of axle housing is provided with the through hole that can supply the valve rod underpart to pass, on described valve rod, also be provided with a convex shoulder, between this convex shoulder and described gland nut, be provided with seal washer, be provided with black box in the inner chamber of this convex shoulder and the formation of described axle housing, the sealing assembly is by at least one pair of rubber gasket, at this a pair of seal washer of being made by high-abrasive material between rubber gasket is constituted.The described a pair of seal washer of being made by high-abrasive material is preferably pottery or graphite grazing packing ring.
As a kind of improvement of the present utility model, seal washer is adopted in hermetic seal between the upper end portion of described axle housing and the upper end portion of this valve body, the outside bending in top, upper end portion of this axle housing, the sealing packing ring is below the outside dogleg section in the top, upper end portion of axle housing and between the upper end portion of valve body.
As another kind of improvement the of the present utility model, the described sheet that is rotationally connected be shaped as T shape.
After adopting such structure, when valve rod is rotating, drive stacked up and down and relatively rotate by the seal washer that high-abrasive material is made, thereby make this grind more smooth and more smooth, make sealing surface fit together better, thereby can prevent gas leak effectively the sealing surface that seal washer is in contact with one another; Because the seal washer that high-abrasive materials such as employing pottery are made, thereby make the valve longer service life.The utility model is simple in structure, be convenient to manufacturing, installation, with low cost.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the structural representation of a kind of cylinder for liquefied gas valve of the present utility model.
Fig. 2 is the structural representation of the axle housing among Fig. 1.
Fig. 3 is the structural representation of the sheet that is rotationally connected among Fig. 1.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of cylinder for liquefied gas valve, comprise valve body 1, valve rod 2, sheet 3 is rotationally connected, spool 4, gland nut 5 and the handwheel 6 that is loaded on valve rod 2 upper end portions, the underpart of valve rod 2 is connected with spool 4 by the sheet 3 that is rotationally connected, between described valve body 1 and described valve rod 2, also be provided with axle housing 7, be hermetic seal between the upper end portion 7-1 of this axle housing 7 and the upper end portion 1-1 of valve body 1, the underpart of axle housing 7 is provided with the through hole 7-2 that can supply valve rod 2 underparts to pass, on described valve rod 2, also be provided with a convex shoulder 2-1, between this convex shoulder 2-1 and described gland nut 5, be provided with seal washer 8, be provided with black box in the inner chamber of this convex shoulder 2-1 and 7 formation of described axle housing, the sealing assembly is by at least one pair of rubber gasket 9-1,9-2, be positioned at this to rubber gasket 9-1, the a pair of seal washer 10-1 that makes by high-abrasive material between the 9-2,10-2 constitutes.
Described a pair of seal washer 10-1, the 10-2 that is made by high-abrasive material is pottery or graphite grazing packing ring.The seal washer 8 that is provided with between described convex shoulder 2-1 and the described gland nut 5 is nylon or ABS plastic seal washer.
Referring to Fig. 1 and Fig. 3, the described shaped design that is rotationally connected sheet 3 becomes T shape, and when rotational valve core 4 upwardly opened, narrow 3-1 of the sheet 3 that is rotationally connected entered in the bottom outlet of valve rod 2.
In use, rotate handwheel 6 and drive valve rod 2 rotations, drive spools 4 by the sheet 3 that is rotationally connected and rotate, spool 4 is moved up and down, thereby be switched on or switched off the liquid gas path.The valve pad 12 that sealing materials such as nylon are made can be installed in the bottom of spool 4.In use, since between convex shoulder 2-1 and axle housing 7 inner chambers, be provided with by at least one pair of rubber gasket 9-1,9-2, at this to a pair of seal washer 10-1 that makes by high-abrasive material between rubber gasket 9-1, the 9-2, the black box that 10-2 constitutes, make gas not leak, and long service life, can be widely used on the cylinder for liquefied gas.
Claims (6)
1. cylinder for liquefied gas valve, comprise valve body (1), valve rod (2), sheet (3) is rotationally connected, spool (4), gland nut (5) and be loaded on the handwheel (6) of valve rod (2) upper end portion, the underpart of valve rod (2) is connected with spool (4) by the sheet that is rotationally connected (3), it is characterized by: between described valve body (1) and described valve rod (2), also be provided with axle housing (7), be hermetic seal between the upper end portion (7-1) of this axle housing (7) and the upper end portion (1-1) of valve body (1), the underpart of this axle housing (7) is provided with the through hole (7-2) that can supply valve rod (2) underpart to pass, on described valve rod (2), also be provided with a convex shoulder (2-1), between this convex shoulder (2-1) and described gland nut (5), be provided with seal washer (8), be provided with black box in the inner chamber that this convex shoulder (2-1) and described axle housing (7) form, the sealing assembly is by at least one pair of rubber gasket (9-1,9-2), be positioned at this to rubber gasket (9-1, the a pair of seal washer (10-1 that makes by high-abrasive material 9-2), 10-2) constitute.
2. cylinder for liquefied gas valve according to claim 1 is characterized in that: the described a pair of seal washer of being made by high-abrasive material (10-1,10-2) is the ceramic seal packing ring.
3. cylinder for liquefied gas valve according to claim 1 is characterized in that: the described a pair of seal washer of being made by high-abrasive material (10-1,10-2) is the graphite grazing packing ring.
4. cylinder for liquefied gas valve according to claim 1 is characterized in that: the seal washer (8) that is provided with between described convex shoulder (2-1) and the described gland nut (5) is nylon or ABS plastic seal washer.
5. cylinder for liquefied gas valve according to claim 1, it is characterized in that: seal washer (11) is adopted in the hermetic seal between the upper end portion (7-1) of described axle housing (7) and the upper end portion (1-1) of valve body (1), the outside bending in top, upper end portion (7-1) of axle housing (7), sealing packing ring (11) are positioned between the upper end portion (1-1) of the below of the outside dogleg section in (7-1) top, upper end portion of axle housing (7) and valve body (1).
6. cylinder for liquefied gas valve according to claim 1 is characterized in that: the described sheet that is rotationally connected (3) be shaped as T shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200371134U CN201037542Y (en) | 2007-04-25 | 2007-04-25 | Liquefied gas steel cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200371134U CN201037542Y (en) | 2007-04-25 | 2007-04-25 | Liquefied gas steel cylinder valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201037542Y true CN201037542Y (en) | 2008-03-19 |
Family
ID=39210058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200371134U Expired - Fee Related CN201037542Y (en) | 2007-04-25 | 2007-04-25 | Liquefied gas steel cylinder valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201037542Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174483A (en) * | 2018-10-29 | 2019-01-11 | 大禹节水（天津）有限公司 | Spiral nozzle is used in a kind of irrigation |
-
2007
- 2007-04-25 CN CNU2007200371134U patent/CN201037542Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174483A (en) * | 2018-10-29 | 2019-01-11 | 大禹节水（天津）有限公司 | Spiral nozzle is used in a kind of irrigation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cong patriotic Inventor after: Zhuang Ling Inventor before: Cong Aiguo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CONG AIGUO TO: CONG AIGUO; ZHUANG LING |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 |