CN203404391U - Welding type liner butterfly valve - Google Patents
Welding type liner butterfly valve Download PDFInfo
- Publication number
- CN203404391U CN203404391U CN201320469081.0U CN201320469081U CN203404391U CN 203404391 U CN203404391 U CN 203404391U CN 201320469081 U CN201320469081 U CN 201320469081U CN 203404391 U CN203404391 U CN 203404391U
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- Prior art keywords
- valve
- butterfly
- valve shaft
- shaft
- welding type
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- Expired - Lifetime
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Abstract
The utility model relates to a welding type liner butterfly valve. A valve body of the welding type liner butterfly valve is directly welded to a wall of an oil tank of a transformer. A liner groove is formed in an inner cavity of the valve body. A valve seat is embedded into the liner groove. The valve seat is in interference fit with the liner groove. A valve shaft penetrates through a center hole of the valve body, a center hole of the valve seat and a butterfly plate from the upper end of the valve body and a sunk screw fixes the butterfly plate with the valve shaft. The butterfly plate is in interference fit with the valve seat and the center hole of the valve seat is in interference fit with the valve shaft. A handle fixation block fixes the handle with the valve shaft. A press plate is installed between the handle fixation block and the valve body. According to the welding type liner butterfly valve, the sealing performance is good, the butterfly valve is easy to detach and install and later-stage maintenance is facilitated. The valve shaft is of a multiple sealing structure, leakage is effectively prevented and meanwhile, the sealing performance of the butterfly valve is not affected by welding and abrasive blasting.
Description
Technical field
The utility model relates to machinery valve technical field, is specifically related to lined butterfly valve in a kind of welding type.
Background technique
Butterfly valve is due to simple in structure, and installation volume is little, opens and closes the features such as rapid, is extensively arranged on transformer, for the control to transformer oil circuit.At present transformer butterfly valve mostly is board-like butterfly valve, adopts two flange opposite-clamped linkage structures, needs two flanges by the butterfly valve installation that is clipped in the middle, therefore need to extend a flange connecting leg from transformer oil tank wall, butterfly valve could be installed, can make like this transformer overall volume larger, be not easy to transportation.
Model utility content
Technical problem to be solved in the utility model is: solve the problem that above-mentioned prior art exists, and provide a kind of simple in structure, mounting or dismounting are convenient, dwindle transformer overall volume, convenient transportation, guarantee that welding sandblast does not affect lined butterfly valve in the welding type of butterfly valve seal performance.
The technical solution adopted in the utility model is:
Lined butterfly valve in a kind of welding type, its valve body is directly welded on transformer oil tank wall, body cavity has a liner groove, and valve seat embeds liner groove, valve seat and liner groove interference fit, valve shaft passes valve body center hole, valve base center hole and butterfly plate from valve body upper end, sunk screw is fixed together butterfly plate and valve shaft, butterfly plate and valve seat interference fit, valve base center hole and valve shaft interference fit, handle fixed block is secured together handle and valve shaft, between handle fixed block and valve body, pressing plate is installed.
In technique scheme, have two places that valve shaft O shape circle has been installed on described valve shaft, the two valve shaft O of place shape circles are respectively pressing plate O shape circle and push rod O shape circle.
In technique scheme, described valve seat adopts the manufacture of oil resistant butadiene-acrylonitrile rubber.
Because the board-like butterfly valve of transformer of conventional art is installed difficulty, need to from transformer oil tank wall, could install by a securing elongated flange connections, thereby cause transformer overall volume larger, be not easy to transportation, in welding type of the present utility model, lined butterfly valve has solved above-mentioned technical barrier, the utility model butterfly valve does not adopt two flange opposite-clamped linkage structures, but butterfly valve body can be directly welded on transformer oil tank wall, form an integral body with fuel tank, one side is reduced volume greatly, also can reduce leak source on the other hand, improve sealability.In addition, the problem of valve body deformation when the utility model has also solved welding, conventionally oil tank of transformer need to sandblast after welding, spray paint, while therefore needing to solve welding, valve body deformation and shot blasting particles clash into the impact on sealing surface, and hard sealing structure, soft seal eccentric structure require all higher to the degree of finish of valve seat, sandblast meeting affects sealing surface of seat degree of finish, directly affects sealing.This butterfly valve adopts center line lined structure, can avoid well the impact of body cavity surface finishment on sealability.This butterfly valve liner valve seat adopts the manufacture of oil resistant butadiene-acrylonitrile rubber, and for guaranteeing to fit closely with valve body, lining-design must be thicker.Butterfly plate adopts the moulding of fine aluminum Alloys Casting, and valve shaft adopts screw to be connected with butterfly plate, is convenient to dismounting, and on valve shaft, cover has two O shape circles, and pressing plate O shape circle carries out multi-sealed to valve shaft.This butterfly valve is designed with unique handle, and has locking position structure to lock valve state.This butterfly valve was disassembled before welding valve body, after isallobaric device fuel tank sprays paint, assembled again, can effectively prevent the damage of Component.
In welding type of the present utility model, lined butterfly valve and oil tank of transformer are welded together, form an integral body, and the transportation of being convenient to transformer is installed.Butterfly valve adopts inner lining structure, good seal performance, and butterfly valve mounting or dismounting easily, are convenient to later maintenance.Valve shaft adopts multi-sealing structure, can effectively prevent from leaking outside.Can guarantee that welding, sandblast do not affect butterfly valve seal performance simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model scheme of installation;
Fig. 2 is the utility model structural front view;
Fig. 3 is the utility model structure side view;
Fig. 4 is the utility model structure plan view;
Fig. 5 is the utility model valve body structure plan view;
Fig. 6 is the utility model valve body structure side view;
Fig. 7 is the utility model valve seat construction plan view;
Fig. 8 is the utility model pressure plate structure sectional view;
Fig. 9 is the utility model pressure plate structure plan view.
Accompanying drawing marking explanation:
1-valve body, 2-valve seat, 3-butterfly plate, 4-valve shaft, 5-sunk screw, 6-end-face seal ring, 7-push rod O shape circle, 8-pressing plate O shape circle, 9-pressing plate, 10-handle fixed block, 11-. handle, 12-liner groove, 13-valve body center hole, 14-chamfering one, 15-mounting hole, 16-valve base center hole, 17-chamfering two, 18-pressing plate fixed hole, 19-fuel tank, 20-connecting leg, 21-strengthens iron, 22-butterfly valve.
Embodiment
Referring to Fig. 1-Fig. 9, in welding type of the present utility model, lined butterfly valve is comprised of parts such as valve body 1, valve seat 2, butterfly plate 3, valve shaft 4, pressing plate 9, handle fixed block 10, handles 11.Body cavity has a liner groove 12, and valve seat 2 embeds wherein, utilizes the flexibility of rubber can make it easily pack in groove, and valve seat and groove adopt interference fit simultaneously, can make it be not easy to become flexible.Valve shaft 4 is from butterfly valve upper end through valve body center hole 13, valve base center hole 16 and butterfly plate 3, and sunk screw 5 is fixed together butterfly plate and valve shaft, can prevent valve shaft axial float, is convenient to again dismounting simultaneously.Butterfly plate 3 and valve seat 2 interference fit, when butterfly valve cuts out, the elastic compression by 3 pairs of valve seats 2 of butterfly plate seals.Valve base center hole 16 adopts interference fit with valve shaft, as the first line of defence of valve shaft seepage, on valve shaft, there are the two valve shaft O of place shape circles, the chamfering 1 on valve body 1 forms a close gap with the chamfering 2 17 on pressing plate, pack therein O type circle 8 into, reliable and stable by several heavy seal approach sealings.Handle fixed block 10 is secured together handle 11 and valve shaft 4, by screw, is undertaken fastening.Butterfly valve body is other component complete removals when welding, can not have influence on other component because of welding high temperature and sandblast shock, adopt inner lining structure can guarantee good sealing, and all fastening pieces all adopt screw, are easy to dismounting.
Claims (3)
1. lined butterfly valve in a welding type, it is characterized in that: its valve body is directly welded on transformer oil tank wall, body cavity has a liner groove, valve seat embeds liner groove, valve seat and liner groove interference fit, valve shaft passes valve body center hole, valve base center hole and butterfly plate from valve body upper end, sunk screw is fixed together butterfly plate and valve shaft, butterfly plate and valve seat interference fit, valve base center hole and valve shaft interference fit, handle fixed block is secured together handle and valve shaft, between handle fixed block and valve body, pressing plate is installed.
2. lined butterfly valve in welding type according to claim 1, is characterized in that: on described valve shaft, have two places that valve shaft O shape circle has been installed, the two valve shaft O of place shape circles are respectively pressing plate O shape circle and push rod O shape circle.
3. lined butterfly valve in welding type according to claim 1, is characterized in that: described valve seat adopts the manufacture of oil resistant butadiene-acrylonitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469081.0U CN203404391U (en) | 2013-08-02 | 2013-08-02 | Welding type liner butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469081.0U CN203404391U (en) | 2013-08-02 | 2013-08-02 | Welding type liner butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404391U true CN203404391U (en) | 2014-01-22 |
Family
ID=49940328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320469081.0U Expired - Lifetime CN203404391U (en) | 2013-08-02 | 2013-08-02 | Welding type liner butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352987A (en) * | 2013-08-02 | 2013-10-16 | 衡阳湘阳特电力工程修试有限公司 | Welded lining butterfly valve |
| CN110695560A (en) * | 2019-10-23 | 2020-01-17 | 山东电力设备有限公司 | Method for controlling welding deformation of threaded hole |
-
2013
- 2013-08-02 CN CN201320469081.0U patent/CN203404391U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352987A (en) * | 2013-08-02 | 2013-10-16 | 衡阳湘阳特电力工程修试有限公司 | Welded lining butterfly valve |
| CN110695560A (en) * | 2019-10-23 | 2020-01-17 | 山东电力设备有限公司 | Method for controlling welding deformation of threaded hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
|
| CX01 | Expiry of patent term |