CN205155174U - Increase latus rectum formula triple offset butterfly valve - Google Patents
Increase latus rectum formula triple offset butterfly valve Download PDFInfo
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- CN205155174U CN205155174U CN201520952518.5U CN201520952518U CN205155174U CN 205155174 U CN205155174 U CN 205155174U CN 201520952518 U CN201520952518 U CN 201520952518U CN 205155174 U CN205155174 U CN 205155174U
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- latus rectum
- butterfly
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Abstract
The utility model provides an increase latus rectum formula triple offset butterfly valve, includes valve body 1, sealing washer 2, gland 3, butterfly plate 4 and valve rod 5, sealed face midplane 101's the skew center of pipe 102 of geometric centre 401, sealing washer 2, gland 3, butterfly plate 4, their benchmark center and sealed face midplane 101's geometric centre 401 coincidence, 501 face midplane 101's sealed relatively in 5 axle center of valve rod geometric centre 401 position is unchangeable, the form of the direct build -up welding of disk seat on the valve body be applicable to, also the form that the valve body was installed to the build -up welding disk seat can be be applicable to. The utility model discloses a triple offset butterfly valve increases the latus rectum relatively, reduces the valve flow resistance, alleviates partial weight.
Description
Technical field
The utility model relates to a kind of pipeline butterfly valve, especially a kind of increase latus rectum formula three eccentric butterfly valve.
Background technique
Butterfly valve, as opening or the valve of closing duct and equipment medium, plays a part to regulate and dam, has a wide range of applications in fields such as oil, rock gas, chemical industry in pipeline and equipment.Three eccentric butterfly valve uses oblique cone by sealing surface on double eccentric butterfly valve basis, adds angle bias.Be no longer the resiliently deformable relying on valve seat, but rely on the seal pressure of sealing surface to realize sealing.
Compared with traditional butterfly valve, there is temperature and pressure using scope wide, good seal performance, the advantages such as long service life.But due to structural limitations, valve seat latus rectum is little compared with traditional center line formula butterfly valve.
The geometrical center of the center seal plane of usual three eccentric butterfly valve is positioned on the central axis of pipeline.Due to the asymmetry of tilted conical surface, fail fully to increase valve latus rectum.
Summary of the invention
The purpose of this utility model is the deficiency in order to improve above-mentioned traditional three eccentric butterfly valve, provides a kind of and increases latus rectum formula three eccentric butterfly valve.
One described in the utility model increases latus rectum formula three eccentric butterfly valve, comprise valve body 1, seal ring 2, gland 3, butterfly plate 4 and valve rod 5, butterfly plate 4 is contained in valve body 1, gland 3 is contained on butterfly plate 4, therebetween seal with seal ring 2, butterfly plate 4 is equipped with valve rod 5, it is characterized in that: geometrical center 401 and the pipeline center 102 of sealing surface central plane 101 depart from; Seal ring 2, gland 3 and butterfly plate 4, their reference center overlaps with the geometrical center 401 of sealing surface central plane; Geometrical center 401 invariant position of valve rod 5 axle center 501 opposing sealing surfaces central plane 101.
A kind of latus rectum formula three eccentric butterfly valve that increases described in the utility model is applicable to valve seat and directly piles the form be welded on valve body 1, also goes for the form that built-up welding valve seat is installed to valve body 1.
Compared with prior art, increase latus rectum formula three eccentric butterfly valve to have the following advantages:
Relatively can increase valve latus rectum by the geometrical center 401 of adjustment sealing surface central plane 101 with pipeline center 102 bias, reduction valve flow resistance, alleviates valve moiety by weight.
Accompanying drawing explanation
Fig. 1 is for increasing latus rectum formula three eccentric butterfly valve structural representation.
Fig. 2 is traditional three eccentric butterfly valve structural representation.
In figure, 1 is valve body, and 2 is seal ring, and 3 is gland, and 4 is butterfly plate, and 5 is valve rod; 501 is valve rod axle center, and 101 is sealing surface central plane, and 401 is the geometrical center of sealing surface central plane 101, and 102 is pipeline center, and 103 is sealing surface tool path.
Embodiment
Below in conjunction with accompanying drawing to specific embodiment of the utility model, be described further, but the utility model is not limited to these embodiments.
Increase latus rectum formula three eccentric butterfly valve described in the utility model comprises valve body 1, seal ring 2, gland 3, butterfly plate 4 and valve rod 5, and butterfly plate 4 is contained in valve body 1, and gland 3 is contained on butterfly plate 4, seals therebetween, butterfly plate 4 is equipped with valve rod 5 with seal ring 2.The geometrical center 401 of increase latus rectum formula three eccentric butterfly valve sealing surface central plane 101 described in the utility model departs from pipeline center 102.By geometrical center 401 and pipeline center 102 side-play amount of adjustment sealing surface central plane 101, it departs from dimensional range is 1-6mm, selects as required to depart from size, can realize relatively large latus rectum.
For not changing rigidity and the stress of seal ring 2 all directions, by seal ring 2, gland 3 and butterfly plate 4, their reference center overlaps with the geometrical center 401 of sealing surface central plane 101; Geometrical center 401 invariant position of valve rod 5 axle center 501 opposing sealing surfaces central plane 101.
Claims (3)
1. one kind increases latus rectum formula three eccentric butterfly valve, comprise valve body (1), seal ring (2), gland (3), butterfly plate (4) and valve rod (5), butterfly plate (4) is contained in valve body (1), gland (3) is contained on butterfly plate (4), therebetween seal ring (2) is used to seal, valve rod (5) butterfly plate (4) is equipped with, it is characterized in that: the geometrical center (401) of sealing surface central plane (101) departs from pipeline center (102), seal ring (2), gland (3) and butterfly plate (4), their reference center overlaps with the geometrical center (401) of sealing surface central plane.
2. one according to claim 1 increases latus rectum formula three eccentric butterfly valve, it is characterized in that: the dimensional range that departs from that the geometrical center (401) of sealing surface central plane (101) departs from pipeline center (102) is 1-6mm.
3. one according to claim 1 increases latus rectum formula three eccentric butterfly valve, it is characterized in that: geometrical center (401) invariant position of valve rod (5) axle center (501) opposing sealing surfaces central plane (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520952518.5U CN205155174U (en) | 2015-11-26 | 2015-11-26 | Increase latus rectum formula triple offset butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520952518.5U CN205155174U (en) | 2015-11-26 | 2015-11-26 | Increase latus rectum formula triple offset butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205155174U true CN205155174U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520952518.5U Active CN205155174U (en) | 2015-11-26 | 2015-11-26 | Increase latus rectum formula triple offset butterfly valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN205155174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113490808A (en) * | 2019-02-28 | 2021-10-08 | 株式会社开滋 | Valve body of double-eccentric butterfly valve and double-eccentric butterfly valve |
-
2015
- 2015-11-26 CN CN201520952518.5U patent/CN205155174U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113490808A (en) * | 2019-02-28 | 2021-10-08 | 株式会社开滋 | Valve body of double-eccentric butterfly valve and double-eccentric butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |