CN205504028U - Low temperature check valve's valve - Google Patents
Low temperature check valve's valve Download PDFInfo
- Publication number
- CN205504028U CN205504028U CN201620339869.3U CN201620339869U CN205504028U CN 205504028 U CN205504028 U CN 205504028U CN 201620339869 U CN201620339869 U CN 201620339869U CN 205504028 U CN205504028 U CN 205504028U
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing gasket
- face
- valve body
- spool
- 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
The utility model discloses a low temperature check valve's valve, including hand wheel (1), valve gap subassembly (3), valve rod (2), valve case (5) and valve body (4), valve case (5) are connected at the lower extreme of valve rod (2) and are lain in valve body (4) and valve body (4) formation valve, the valve department of valve case (5) seals and fills up (6) through the tip of seal ring (7) and fastener (8) scarf joint in valve case (5) including sealed (6), seal ring (7) and fastener (8) of filling up to sealed (6) the terminal surface that fills up supported tightly with valve body (4) when the valve was closed, and sealed (6) the terminal surface that fills up is thrown off with valve body (4) during valve open. After adopting this kind of structure, the leakproofness of valve department is better, even the sealed wear out failure who fills up also can be avoided to sealed the pad after long -time use, has guaranteed the sealing performance of terminal surface to low temperature check valve's normal work has been guaranteed.
Description
Technical field
This utility model relates to the technical field of valve, is especially the valve of a kind of cryogenic globe valve.
Background technology
Cryogenic globe valve, through frequently as the use cut off, regulate or throttle, being one of pipe-line system adnexa, be mainly used in warehousing and transportation facilities and the associated pipe of the liquefied gas at low temp such as liquid oxygen, liquid argon, liquid nitrogen and liquefied natural gas.The cryogenic globe valve of prior art, as shown in Figure 1, it includes valve body 04, handwheel 01, valve rod 03, pressure cap 02 and valve spool 05, one end of valve rod 03 is connected with handwheel 01, and the other end is connected with valve spool 05, and pressure cap 02 is connected on valve body 04, valve rod 03 is connected with pressure cap 02 by sealing device, valve spool 05 is threadeded with pressure cap 02, and the lower end interlocking of valve spool 05 has sealing ring 06, and sealing ring 06 forms valve with valve body 04 in valve body 04.But, there is following shortcoming in the valve of the cryogenic globe valve of this structure: be can be seen that by accompanying drawing 1, body cavity at valve is the conical surface, the lower end sidewall of corresponding valve spool is also the conical surface, therefore, sealing at valve uses the structure that sidewall seals, when valve access times are too much, or in the case of low temperature effect overlong time, sealing ring can occur permanent deformation to lose partial elastic, minim gap is formed between valve body and sealing ring, thus both laminatings closely do not cause micro-leakage, this leakage becomes apparent from the rotation process of valve rod.
Utility model content
Technical problem to be solved in the utility model is to provide the valve of the more preferable cryogenic globe valve of sealing property at a kind of valve.
For solving above-mentioned technical problem, the valve of the cryogenic globe valve that this utility model provides, there is the valve body of air inlet and gas outlet including handwheel, bonnet assemblies, valve rod, valve spool and inside, valve spool is connected to the lower end of valve rod and is positioned at valve body and valve body formation valve, valve rod is rotationally connected with bonnet assemblies, bonnet assemblies is connected to valve body upper end, and handwheel is connected to the upper end of valve rod；Sealing gasket, seal washer and securing member is included at the valve of described valve spool, sealing gasket is rabbeted in the end of valve spool by seal washer and securing member, and sealing gasket end face pushes against with valve body during valve closing, during valve opening, sealing gasket end face disengages with valve body.
The lower end of described valve spool is provided with the annular seal groove of accommodating sealing gasket, and the plane of the valve spool within annular seal groove is less than the plane of the valve spool beyond annular seal groove.
The bottom land of described annular seal groove is provided with at least one annular groove.
The quantity of described annular groove is two, and concentric is arranged, and the cross section of every annular groove is rectangle.
The outer face of described sealing gasket has sealing gasket boss near circle centre position, and seal washer is pressed on the end face of sealing gasket boss through securing member.
Valve body at described valve is provided with valve body boss, and during valve closing, sealing gasket end face pushes against with the end face of valve body boss, sealing gasket end face and the face opening of valve body boss during valve opening.
The outer edge of described valve body raised head face is round-corner transition.
After using above structure, this utility model compared with prior art, has the advantage that
1) valve formed due to valve spool and valve body in valve body its open and close be sealed into axial end face end face, therefore, better tightness at valve, even if sealing gasket is after a protracted use, the wear out failure of sealing gasket can also be avoided, ensure that the sealing property of end face, thus ensure that the normal work of cryogenic globe valve；
2) plane within annular seal groove is less than the plane beyond annular seal groove, is to make sealing gasket can have the space of an accommodating variant part after deformation, thus avoids affecting the sealing property of sealing gasket；
3) annular groove arranged on seal groove bottom land, is in order to sealing gasket can be squeezed in annular groove after compressive deformation, thus sealing gasket is more firm with the connection of seal groove.
Accompanying drawing explanation
Fig. 1 is the structural representation of the valve of cryogenic globe valve in prior art.
Fig. 2 is the structural representation of the valve of this utility model cryogenic globe valve.
Fig. 3 is the structure for amplifying schematic diagram of the valve of this utility model cryogenic globe valve.
Wherein:
Prior art: 01, handwheel；02, pressure cap；03, valve rod；04, valve body；05, spool；06, sealing ring；
This utility model: 1, handwheel；2, valve rod；3, bonnet assemblies；4, valve body；5, valve spool；6, sealing gasket；7, seal washer；8, securing member；9, annular seal groove；10, annular groove；11, sealing gasket boss；12, valve body boss.
Detailed description of the invention
With detailed description of the invention, this utility model is described in more detail below in conjunction with the accompanying drawings.
Structural representation from the valve of this utility model cryogenic globe valve shown in Fig. 2 and Fig. 3, it includes that handwheel 1, bonnet assemblies 3, valve rod 2, valve spool 5 and inside have the valve body 4 of air inlet and gas outlet, valve spool 5 is connected to the lower end of valve rod 2 and is positioned at valve body 4 and forms valve with valve body 4, valve rod 2 is rotationally connected with bonnet assemblies 3, bonnet assemblies 3 is connected to valve body 4 upper end, and handwheel 1 is connected to the upper end of valve rod 2.Sealing gasket 6, seal washer 7 and securing member 8 is included at the valve of described valve spool 5, sealing gasket 6 is rabbeted in the end of valve spool 5 by seal washer 7 and securing member 8, and sealing gasket 6 end face pushes against with valve body 4 during valve closing, during valve opening, sealing gasket 6 end face disengages with valve body 4.
The lower end of described valve spool 5 is provided with the annular seal groove 9 of accommodating sealing gasket 6, and the plane of the valve spool 5 within annular seal groove 9 is less than the plane of the valve spool 5 beyond annular seal groove 9.
The bottom land of described annular seal groove 9 is provided with at least one annular groove 10.In the present embodiment, the quantity of described annular groove 10 is two, and concentric is arranged, and the cross section of every annular groove 10 is rectangle.
The outer face of described sealing gasket 6 has sealing gasket boss 11 near circle centre position, and seal washer 7 is pressed on the end face of sealing gasket boss 11 through securing member 8.
Valve body 4 at described valve is provided with valve body boss 12, and during valve closing, sealing gasket 6 end face pushes against with the end face of valve body boss 12, sealing gasket 6 end face and the face opening of valve body boss 12 during valve opening.
The outer edge of described valve body boss 12 end face is round-corner transition.
The above; it it is only the most feasible enforcement example of this utility model; can not the most i.e. limit to interest field of the present utility model; for those skilled in the art, other various corresponding changes that all utilization the technical solution of the utility model and technology design are made all should belong within this utility model scope of the claims.
Claims (7)
1. a valve for cryogenic globe valve, including handwheel (1), bonnet assemblies (3), valve rod (2), valve spool (5)
And inside has the valve body (4) of air inlet and gas outlet, valve spool (5) is connected to the lower end of valve rod (2) and is positioned at valve
Forming valve with valve body (4) in body (4), valve rod (2) is rotationally connected with bonnet assemblies (3), and bonnet assemblies (3) connects
In valve body (4) upper end, handwheel (1) is connected to the upper end of valve rod (2)；It is characterized in that: described valve spool (5)
Valve at include sealing gasket (6), seal washer (7) and securing member (8), sealing gasket (6) by seal washer (7) and
Securing member (8) is rabbeted in the end of valve spool (5), and during valve closing, sealing gasket (6) end face supports with valve body (4)
Tightly, during valve opening, sealing gasket (6) end face disengages with valve body (4).
The valve of cryogenic globe valve the most according to claim 1, it is characterised in that: under described valve spool (5)
End is provided with the annular seal groove (9) of accommodating sealing gasket (6), and the plane of the valve spool (5) within annular seal groove (9) is low
The plane of the valve spool (5) beyond annular seal groove (9).
The valve of cryogenic globe valve the most according to claim 2, it is characterised in that: described annular seal groove (9)
Bottom land is provided with at least one annular groove (10).
The valve of cryogenic globe valve the most according to claim 3, it is characterised in that: the number of described annular groove (10)
Amount is two, and concentric is arranged, and the cross section of every annular groove (10) is rectangle.
The valve of cryogenic globe valve the most according to claim 1, it is characterised in that: the outer end of described sealing gasket (6)
Face has sealing gasket boss (11) near circle centre position, and seal washer (7) is pressed on sealing gasket boss (11) through securing member (8)
End face on.
The valve of cryogenic globe valve the most according to claim 1, it is characterised in that: on the valve body (4) at described valve
Being provided with valve body boss (12), during valve closing, sealing gasket (6) end face pushes against with the end face of valve body boss (12), valve opening
Time sealing gasket (6) end face and valve body boss (12) face opening.
The valve of cryogenic globe valve the most according to claim 6, it is characterised in that: described valve body boss (12) end face
Outer edge be round-corner transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620339869.3U CN205504028U (en) | 2016-04-21 | 2016-04-21 | Low temperature check valve's valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620339869.3U CN205504028U (en) | 2016-04-21 | 2016-04-21 | Low temperature check valve's valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504028U true CN205504028U (en) | 2016-08-24 |
Family
ID=56706246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620339869.3U Expired - Fee Related CN205504028U (en) | 2016-04-21 | 2016-04-21 | Low temperature check valve's valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205504028U (en) |
-
2016
- 2016-04-21 CN CN201620339869.3U patent/CN205504028U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20190421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |