CN202065482U - Two-way high-pressure three-eccentric integral type metallic hard seal butterfly valve - Google Patents
Two-way high-pressure three-eccentric integral type metallic hard seal butterfly valve Download PDFInfo
- Publication number
- CN202065482U CN202065482U CN201120182201XU CN201120182201U CN202065482U CN 202065482 U CN202065482 U CN 202065482U CN 201120182201X U CN201120182201X U CN 201120182201XU CN 201120182201 U CN201120182201 U CN 201120182201U CN 202065482 U CN202065482 U CN 202065482U
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- valve
- butterfly plate
- butterfly
- valve rod
- seal
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Abstract
The utility model relates to a two-way high-pressure three-eccentric integral type metallic hard seal butterfly valve which is used under a high-temperature corrosive medium for a thermal power plant steam system, a chemical industry and the like. A butterfly plate seal surface and a butterfly plate of the butterfly valve are formed into a whole incapable of being separated; the butterfly plate seal surface is connected with the butterfly plate in a mode without being fixed by another machine; the valve seat and the valve body are in an integral type; mutually matched conical surface seal is arranged between a seal pair; the seal pair is made of a metal material; a butterfly plate sealing ring and the valve seat form a wedge-shaped structure by a seal structure according to a cam theory; when the valve is opened and closed, the sealing ring is separated from and is contacted with the valve seat instantly; no friction and no block and extrusion occur between the seal pair so that the valve is reliable to seal and has long service life.
Description
Technical field
The utility model relates to a kind of bidirectional high-pressure metal hard-sealing butterfly valve, particularly the butterfly valve about installing and using under High Temperature High Pressure and mordant, as to need inlet-outlet bidirectional sealing operating mode.
Background technique
The sealing pair of existing metal hard-sealing butterfly valve by valve body, be positioned at a plurality of component such as valve seat on the valve body body, butterfly plate, seal ring, butterfly plate pressure ring, bolt and form, each component need processing separately, assemble then, the technology more complicated, manufacturing efficiency is lower.The seal ring of existing metal hard-sealing butterfly valve is composited by tinsel more than 2 layers or 2 layers and non-metal plate, seal ring is installed on the butterfly plate by butterfly plate pressure ring and bolt, the metal hard-sealing butterfly valve of this structure, owing to be subjected to the physics of non-metal plate on the seal ring and the influence of chemical property, only can be applicable to general non high temperature high pressure and non-aggressive operating mode.When manifold pressure higher, velocity of medium is very fast, and when butterfly plate was in part unlatching or whole opening state, high speed flow cognition produced the front to the seal ring on the butterfly plate and washes away, cause the nonmetal interlayer on the seal ring to wear and tear even come off, greatly influenced the sealability of valve; When pipeline internal medium was corrosive, the nonmetal interlayer on the seal ring was vulnerable to the corrosion of medium, caused that valve sealing face leaks.In addition, seal ring is installed on the butterfly plate by butterfly plate pressure ring and bolt, bolt medium direct and in the pipeline contacts, if medium is corrosive, so just require bolt to have the corrosion resistant performance identical with valve body and butterfly plate, bolt is a standard piece, bolt a small amount of or the small lot special material relatively difficulty customized and costing an arm and a leg.
The model utility content
The purpose of this utility model is the various deficiencies at above existing metal hard-sealing butterfly valve product, a kind of new structure that the process technological improvement forms, the utility model bidirectional high-pressure metal hard-sealing butterfly valve is simple in structure, easy processing, amount of parts is few, saves material, can enhance productivity, and sealability is reliable, and long service life can be widely used in high temperature and high pressure and mordant occasion.
The purpose of this utility model realizes by following technical measures: the utility model relates to a kind of bidirectional high-pressure metal hard-sealing butterfly valve, it comprises valve body, support, Gland, filler, lower end cap, upper valve rod, lower valve rod, the butterfly plate that is connected by pin with upper valve rod and lower valve rod (7), valve seat on the valve body is positioned at the inner chamber of valve body, the butterfly plate sealing surface is arranged on the butterfly plate, described upper valve rod and lower valve rod are installed in valve inner, upper valve rod and lower valve rod are in same gyration center, the offset distance of the gyration center line of upper valve rod and lower valve rod and the sealing surface center line of valve seat is second offset distance, and the gyration center line of upper valve rod and lower valve rod and the offset distance of valve flowing channel center line are first offset distance.
Preferably, the sealing surface between described butterfly plate sealing surface and the valve seat is the tilted conical surface that cooperatively interacts, and circular cone center line and valve channel center line angle are a °, and the bus of circular cone intersects at valve seat one side, and promptly conical tip is positioned at valve seat one side.
Preferably, described butterfly plate sealing surface and butterfly plate are as a whole.
Preferably, butterfly plate sealing surface and butterfly plate built-up welding form.
Sealing surface between described butterfly plate sealing surface and the valve seat is the tilted conical surface that cooperatively interacts, and circular cone center line and valve channel center line angle are a °, and the bus of circular cone intersects at valve seat one side, and promptly conical tip is positioned at valve seat one side.
Because the utility model bidirectional high-pressure metal hard-sealing butterfly valve adopts three eccentric structures, its sealing configuration makes butterfly plate seal ring and valve seat wedgewise structure according to the cam principle, valve opening and when closing, seal ring separates with valve seat moment and contacts, do not have friction between the sealing pair, do not have to block and squeeze, valve seal is reliable, long service life.Butterfly plate sealing surface and butterfly plate are an integral body, can be applicable to various high temperature, high pressure, mordant operating mode by the combination of different metal material, all deficiencys of existing metallic sealing butterfly valve have thoroughly been solved, be widely used in power plant, chemical industry, metallurgy, urban heat supplying etc. require valve high temperature high voltage resistant, corrosion resistant occasion.
First offset distance of the present utility model, second offset distance, angle a ° can calculate according to valve aperture size and concrete working condition.Wherein first offset distance makes the stressed approximate equilibrium in butterfly plate both sides by reasonable choosing value, when the medium reverse flow, can guarantee the reliably reverse sealability of valve.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is a plan view of the present utility model;
Fig. 2 is a C-C sectional view of the present utility model;
Fig. 3 is a D-D sectional view of the present utility model;
Fig. 4 is an I of the present utility model position zoomed-in view.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, bidirectional high-pressure metal hard-sealing butterfly valve described in the utility model, the butterfly plate 11 that it comprises valve body 5, support 2, Gland 3, filler 4, lower end cap 8, upper valve rod 1, lower valve rod 7, is connected by pin 6 with upper valve rod 1 and lower valve rod 7, valve seat 9 on the valve body 5 is positioned at the inner chamber of valve body 5, and butterfly plate sealing surface 10 is arranged on the butterfly plate 11.It is characterized in that described upper valve rod 1 and lower valve rod 7 adopt eccentric mode to be installed in valve body 5 inside, upper valve rod 1 and lower valve rod 7 are in same gyration center, the gyration center line of upper valve rod 1 and lower valve rod 7 and the sealing surface disalignment of valve seat 9 distance are the second offset distance B, and the gyration center line of upper valve rod 1 and lower valve rod 7 and valve flowing channel disalignment distance are the first offset distance A.
Described butterfly plate sealing surface 10 and the integral body of butterfly plate 11 for can not be split need not be connected with butterfly plate 11 by the mode of other any mechanical fixation.Butterfly plate sealing surface 10 materials can be identical with butterfly plate 11, also can make by the mode of build-up welding alloy material.
Sealing surface between described butterfly plate sealing surface 10 and the valve seat 9 is the tilted conical surface that cooperatively interacts, and circular cone center line and valve channel center line angle are a °, and the bus of circular cone intersects at valve seat 9 one sides, and promptly conical tip is positioned at valve seat 9 one sides.
Claims (4)
1. bidirectional high-pressure metal hard-sealing butterfly valve, it comprises valve body (5), support (2), Gland (3), filler (4), lower end cap (8), upper valve rod (1), lower valve rod (7), the butterfly plate (11) that is connected by pin (6) with upper valve rod (1) and lower valve rod (7), valve seat (9) on the valve body (5) is positioned at the inner chamber of valve body (5), butterfly plate sealing surface (10) is arranged on the butterfly plate (11), it is characterized in that, described upper valve rod (1) and lower valve rod (7) are installed in valve body (5) inside, upper valve rod (1) and lower valve rod (7) are in same gyration center, the offset distance of the sealing surface center line of the gyration center line of upper valve rod (1) and lower valve rod (7) and valve seat (9) is second offset distance, and the gyration center line of upper valve rod (1) and lower valve rod (7) and the offset distance of valve flowing channel center line are first offset distance.
2. bidirectional high-pressure metal hard-sealing butterfly valve according to claim 1, it is characterized in that, sealing surface between described butterfly plate sealing surface (10) and the valve seat (9) is the tilted conical surface that cooperatively interacts, circular cone center line and valve channel center line angle are a °, and the bus of circular cone intersects at valve seat (9) one sides, and promptly conical tip is positioned at valve seat (9) one sides.
3. bidirectional high-pressure metal hard-sealing butterfly valve according to claim 1 is characterized in that, described butterfly plate sealing surface (10) is as a whole with butterfly plate (11).
4. bidirectional high-pressure metal hard-sealing butterfly valve according to claim 3 is characterized in that, butterfly plate sealing surface (10) forms with butterfly plate (11) built-up welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120182201XU CN202065482U (en) | 2011-05-19 | 2011-05-19 | Two-way high-pressure three-eccentric integral type metallic hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120182201XU CN202065482U (en) | 2011-05-19 | 2011-05-19 | Two-way high-pressure three-eccentric integral type metallic hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202065482U true CN202065482U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120182201XU Expired - Fee Related CN202065482U (en) | 2011-05-19 | 2011-05-19 | Two-way high-pressure three-eccentric integral type metallic hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202065482U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279341A (en) * | 2013-07-04 | 2015-01-14 | 浙江北泽阀门制造有限公司 | Triple-eccentric two-way hard sealing butterfly valve |
| CN108006236A (en) * | 2017-11-13 | 2018-05-08 | 雷蒙德(北京)科技股份有限公司 | Metallic seal butterfly valve |
-
2011
- 2011-05-19 CN CN201120182201XU patent/CN202065482U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279341A (en) * | 2013-07-04 | 2015-01-14 | 浙江北泽阀门制造有限公司 | Triple-eccentric two-way hard sealing butterfly valve |
| CN108006236A (en) * | 2017-11-13 | 2018-05-08 | 雷蒙德(北京)科技股份有限公司 | Metallic seal butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XUANDA INDUSTRIAL GROUP CO., LTD. Free format text: FORMER OWNER: XUANDA INDUSTRIAL GROUP ZHEJIANG NAISEN NAISEN BUTTERFLY VALVE CO., LTD. Effective date: 20140122 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325100 WENZHOU, ZHEJIANG PROVINCE TO: 325105 WENZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140122 Address after: Dong'ou Industrial Park, Yongjia County, Wenzhou City, Zhejiang province 325105 Patentee after: Xuanda Industrial Group Co., Ltd. Address before: Dong'ou Industrial Zone Oubei town of Yongjia County, Wenzhou City, Zhejiang province 325100 Patentee before: Zhejiang Naisen Butterfly Valve Co., Ltd., Yida Industry Group |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20200519 |