CN107842628B - Two-way pressure universal automatic compensation valve seat pressure plate type valve - Google Patents
Two-way pressure universal automatic compensation valve seat pressure plate type valve Download PDFInfo
- Publication number
- CN107842628B CN107842628B CN201711210487.6A CN201711210487A CN107842628B CN 107842628 B CN107842628 B CN 107842628B CN 201711210487 A CN201711210487 A CN 201711210487A CN 107842628 B CN107842628 B CN 107842628B
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- China
- Prior art keywords
- valve
- radial
- valve seat
- floating ring
- valve body
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- 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.)
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- 238000007789 sealing Methods 0.000 claims abstract description 57
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to a two-way pressure universal automatic compensation valve seat pressing plate type valve, which comprises a valve body, a valve seat, a valve core, a valve rod, a sealing element and a mounting element, wherein the valve core and the valve seat are provided with spherical sealing surfaces which are matched with each other; the valve seat is characterized in that a radial floating device is arranged between the valve seat and the valve body, the radial floating device consists of a floating ring and a pressing plate, the floating ring is pressed on a radial step in a valve body channel by the pressing plate, two end faces of the floating ring are in dynamic seal fit with the radial step in the valve body channel and the end face of the pressing plate, a floating cavity is arranged between the outer circular face of the floating ring and the inner circular wall of the valve body channel, and two end faces of the valve seat are arranged between the end face of the pressing plate and the radial inner step of an inner hole of the floating ring. The concentricity of the spherical sealing surface of the valve core and the spherical sealing surface of the valve seat is automatically adjusted in the closing process of the valve core, and the valve has the characteristics of good sealing performance, high production yield, long service life of products and the like.
Description
Technical Field
The invention belongs to the field of valves, and particularly relates to a spherical sealing valve capable of rotating by 90 degrees. The invention is suitable for the spherical sealing valve rotating at 90 degrees such as global, hemispherical, butterfly and the like under the working condition of high-temperature high-pressure medium.
Background
The ball valve has the advantages of simple structure, convenient opening and closing, full-diameter circulation, small flow resistance and the like, is widely applied to medium conveying pipelines in various fields of national economy, and mainly structurally comprises a valve body, a valve cover, a valve seat, a ball body and a valve rod, wherein the ball body is installed with an inner cavity of the valve body by the valve rod, the ball body and the valve seat form a spherical sealing pair matched with each other, the outer circular surface of the valve seat is in sealing fit with an inner hole of a valve body channel, and a transmission device drives the ball body to rotate by 90 degrees through the valve rod, so that the opening and closing operation of the ball valve is realized. The main disadvantages are: the radial fixed mounting of disk seat is at the valve body passageway inner wall, and the disk seat central line is fixed on the valve body passageway central line in theory, but, after the spheroid is installed at the valve body inner chamber, there is more or less deviation between its centre of sphere position and the disk seat central line, and there is processing error in sphere face and disk seat sphere sealing face, lead to there is the deviation in concentricity of sphere face and disk seat sphere sealing face, sealing pair circumferencial sealing specific pressure is inconsistent when making spheroid and disk seat cooperate, restriction ball valve's sealing performance's improvement, leak appears when the error is great, this is the main reason that causes current hard seal ball valve to leave factory the test qualification rate low. And in the use process, the abrasion of the ball body and the sealing surface of the valve seat is increased, and the service life of the product is reduced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the bidirectional pressure universal automatic compensation valve seat pressing plate type valve which can automatically adjust the matching concentricity error of the spherical sealing surface of the valve core and the spherical sealing surface of the valve seat caused by installation and processing, has good matching concentricity of the valve core and the valve seat, has good sealing pair circumferential sealing specific pressure consistency, good sealing performance, high product yield and long service life.
The technical scheme of the invention comprises a valve body, a valve seat, a valve core, a valve rod, a sealing element and a mounting element, wherein the valve core and the valve seat are provided with spherical sealing surfaces which are matched with each other; the valve seat is characterized in that a radial floating device is arranged between the valve seat and the valve body, the radial floating device consists of a floating ring and a pressing plate, the floating ring is pressed on a radial step in a valve body channel by the pressing plate, two end faces of the floating ring are in dynamic seal fit with the radial step in the valve body channel and the end face of the pressing plate, a floating cavity is arranged between the outer circular face of the floating ring and the inner circular wall of the valve body channel, and two end faces of the valve seat are arranged between the end face of the pressing plate and the radial inner step of an inner hole of the floating ring.
Preferably, an axial floating gap is arranged between the radial end face of one side of the valve seat, which is close to the sealing surface, and the radial inner step of the inner hole of the floating ring, and the outer circular surface of the valve seat is in dynamic sealing fit with the inner hole wall of the floating ring.
Preferably, the valve core is provided with an upper rotating shaft and a lower rotating shaft which are connected together, the valve core is arranged in the inner cavity of the valve body through the upper rotating shaft and the lower rotating shaft, and the outer circular surface of the lower end of the valve rod is connected with the shaft hole of the upper rotating shaft through a spline.
The invention has the advantages that the radial floating device is arranged between the valve seat and the valve body, when concentricity deviation exists between the spherical sealing surface of the valve core and the spherical sealing surface of the valve seat due to processing and installation errors, the valve seat is pushed to float radially in the closing process of the valve core, and the concentricity of the spherical sealing surface of the valve core and the spherical sealing surface of the valve seat is automatically adjusted, so that the spherical sealing surfaces of the valve core and the spherical sealing surface of the valve seat are matched in a concentric sealing way, the uniform and consistent circumferential sealing specific pressure of the sealing pair is achieved, and the invention has the characteristics of good sealing performance, high production yield, long service life of products and the like.
Drawings
FIG. 1 is a schematic side-mounted structure of the present invention.
Fig. 2 is a schematic diagram of the top-loading structure of the present invention.
Fig. 3 is a schematic structural view of the butterfly spherical valve element of the present invention.
Detailed Description
The valve with the bidirectional pressure universal automatic compensation valve seat is shown in fig. 1 and 2, and comprises a valve body 1, a valve seat 5, a valve core 7, a valve rod, a sealing element and a mounting element, wherein the valve core 7 and the valve seat are provided with spherical sealing surfaces matched with each other, the valve core 7 is formed by fixedly mounting a spherical sealing ring on a valve clack, and also can adopt a spherical sealing surface structure with 90-degree rotation such as a full sphere, a hemisphere, a V-shaped sphere and the like; the radial floating device is arranged between the valve seat 5 and the valve body 1 and consists of a floating ring 3 and a pressing plate 6, the floating ring 3 is pressed on a radial step in a channel of the valve body 1 by the pressing plate 6, two end faces of the floating ring 3 are in dynamic seal fit with the radial step in the channel of the valve body 1 and the end face of the pressing plate 6, a first sealing ring 8 is arranged between the left end face of the floating ring 3 and the radial step in the channel of the valve body 1, mirror surface dynamic seal fit is adopted between the right end face of the floating ring 3 and the end face of the pressing plate 6, mirror surface hard-touch hard seal can also be adopted between the left end face of the floating ring 3 and the radial step in the channel of the valve body 1, the temperature resistance is improved, the pressing plate 6 is fixedly arranged in the channel of the valve body 1 in a sealing manner by bolts 10, a floating cavity 2 is arranged between the outer circular face of the floating ring 3 and the inner circular wall of the channel of the valve body 1, the floating ring 3 can move radially in the channel of the valve body 1, two end faces of the valve seat 5 are arranged between the end faces of the pressing plate 6 and the radial inner step in the inner hole of the floating ring 3, and the floating ring 3 drives the valve seat 5 to move integrally and radially.
An axial floating gap 4 is formed between the radial end surface of one side of the valve seat 5, which is close to the sealing surface, and the radial inner step of the inner hole of the floating ring 3, and the outer circular surface of the valve seat 5 is in dynamic sealing fit with the inner hole wall of the floating ring 3, so that the valve seat 5 can axially move in the inner hole of the floating ring 3, high-temperature expansion blocking between the valve core 7 and the valve seat 5 is prevented, and the outer circular surface of the valve seat 5 and the inner hole wall of the floating ring 3 are sealed by adopting an O-shaped sealing ring 9.
The butterfly spring is arranged between the radial end surfaces of the valve seat 5 and the pressing plate 6, the butterfly spring presses the valve seat 5 towards the radial inner step direction of the inner hole of the floating ring 3, the sealing specific pressure of the valve core 7 in sealing fit with the valve seat 5 is increased, the valve seat 5 can axially move in the inner hole of the floating ring 3, and the valve core 7 and the valve seat 5 are prevented from being high Wen Kasi.
The valve core 7 is provided with an upper rotating shaft and a lower rotating shaft which are connected together, the valve core 7 is arranged in the inner cavity of the valve body 1 through the upper rotating shaft and the lower rotating shaft, and the outer circular surface of the lower end of the valve rod is connected with the shaft hole of the upper rotating shaft through a spline. The thrust generated by the medium to the valve core 7 is pressed by the upper rotating shaft and the lower rotating shaft, so that the defect that the thrust generated by the medium to the valve core 7 in the prior art is pressed by the valve rod is avoided, the radial pressure of the valve rod is reduced, and the opening and closing moment is reduced. Shaft sleeves are arranged between the outer cylindrical surfaces of the upper rotating shaft and the lower rotating shaft and the shaft holes on the valve body 1, so that the rotating friction force of the upper rotating shaft and the lower rotating shaft is reduced.
The valve rod passes through link and 1 sealing connection of valve body, link fixed seal installs in 1 upper end of valve body, go up the outer cylinder of rotation axis and the shaft hole movable fit connection of link lower extreme, set up packing sealing device between valve rod middle part outer disc and the link, the valve rod upper end is connected with the drive mechanism of installing on the support of link upper end, lower rotation axis passes through lower cover and 1 sealing connection of valve body, lower cover fixed seal installs in 1 lower extreme of valve body, lower rotation axis outer cylinder and the shaft hole movable fit connection of lower cover upper end, case 7 adopts side dress formula structure, case 7 is from 1 passageway of valve body packing into the inner chamber, as shown in fig. 1. The valve core 7 may adopt a butterfly spherical structure, namely a butterfly plate with a spherical sealing surface, as shown in fig. 3.
The valve rod passes through upper cover and valve body 1 sealing connection, and upper cover fixed seal installs in valve body 1 upper end, and the outer cylinder of upper rotating shaft is connected with the shaft hole movable fit of upper cover lower extreme, sets up packing sealing device between valve rod middle part outer disc and the upper cover, and the valve rod upper end is connected with the drive mechanism of installing on the support of upper cover upper end, and case 7 adopts the upper-mounted structure, and case 7 loads into valve body 1 inner chamber from the upper cover promptly, as shown in fig. 2.
The valve body 1 is formed by integral casting or forging, and the valve body 1 is connected by adopting a flange connection structure or a welding connection structure.
Claims (2)
1. The utility model provides a universal automatic compensation disk seat clamp plate formula valve of bi-directional pressure, includes valve body (1), disk seat (5), case (7), valve rod, sealing member and installed part, and case (7) and disk seat (5) have the sphere sealing surface of mutually supporting, and case (7) adopts the hemisphere, and the sphere sealing surface of this hemisphere cooperates with the sphere sealing surface of disk seat (5) and constitutes the sealed pair of ball valve mutually; the method is characterized in that: a radial floating device is arranged between the valve seat (5) and the valve body (1), the radial floating device consists of a floating ring (3) and a pressing plate (6), the floating ring (3) is pressed on a radial step in a channel of the valve body (1) by the pressing plate (6), two end faces of the floating ring (3) are in dynamic seal fit with the radial step in the channel of the valve body 1 and the end face of the pressing plate (6), a floating cavity (2) is arranged between the outer circular surface of the floating ring (3) and the inner circular wall of the channel of the valve body (1), and two side end faces of the valve seat (5) are arranged between the end face of the pressing plate (6) and the radial inner step of an inner hole of the floating ring (3); an axial floating gap (4) is arranged between the radial end surface of one side of the valve seat (5) close to the sealing surface and the radial inner step of the inner hole of the floating ring (3), and the outer circular surface of the valve seat (5) is in dynamic sealing fit with the inner hole wall of the floating ring (3).
2. The bi-directional pressure universal self-compensating valve seat pressure plate valve of claim 1, wherein: the valve core (7) is provided with an upper rotating shaft and a lower rotating shaft which are connected together, the valve core (7) is arranged in the inner cavity of the valve body (1) through the upper rotating shaft and the lower rotating shaft, and the outer circular surface of the lower end of the valve rod is connected with the shaft hole of the upper rotating shaft through splines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210487.6A CN107842628B (en) | 2017-11-28 | 2017-11-28 | Two-way pressure universal automatic compensation valve seat pressure plate type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210487.6A CN107842628B (en) | 2017-11-28 | 2017-11-28 | Two-way pressure universal automatic compensation valve seat pressure plate type valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107842628A CN107842628A (en) | 2018-03-27 |
| CN107842628B true CN107842628B (en) | 2023-09-01 |
Family
ID=61680493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711210487.6A Active CN107842628B (en) | 2017-11-28 | 2017-11-28 | Two-way pressure universal automatic compensation valve seat pressure plate type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842628B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553056A (en) * | 2019-09-30 | 2019-12-10 | 青田超越阀门有限公司 | Spherical bidirectional high-performance rotary valve |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477057A (en) * | 1980-12-12 | 1984-10-16 | Matkemi Ag | Sealing device for valves |
| DE3819301A1 (en) * | 1988-06-03 | 1989-12-07 | Rautenkranz Int Hermann | Ball valve for shutting off pipes, having a floating spherical plug and radially displaceable seat rings |
| WO1997009550A1 (en) * | 1995-09-07 | 1997-03-13 | Naf Ab | Self-adjusting ball valve assembly |
| US5755427A (en) * | 1996-02-23 | 1998-05-26 | Naf Ab | Self adjusting ball valve assembly |
| CN200943717Y (en) * | 2006-05-19 | 2007-09-05 | 铁岭良工阀门有限责任公司 | Floating metal sealed butterfly valve |
| CN201111575Y (en) * | 2007-08-29 | 2008-09-10 | 张启权 | Bidirectional pressure metallic hard sealing butterfly valve |
| JP2011241943A (en) * | 2010-05-20 | 2011-12-01 | Tyco Flow Control Japan Kk | Ball valve |
| CN202561109U (en) * | 2012-05-22 | 2012-11-28 | 永嘉县天天阀门厂 | V-shaped ball valve |
| CN203322300U (en) * | 2013-07-09 | 2013-12-04 | 铁岭特种阀门股份有限公司 | Three-dimensional compensation and two-direction metal sealing butterfly valve |
| CN203463678U (en) * | 2013-08-07 | 2014-03-05 | 中阀科技(长沙)阀门有限公司 | High-temperature high-pressure bidirectional metal hard sealing butterfly valve |
| CN203940028U (en) * | 2014-06-20 | 2014-11-12 | 浙江西铁阀门有限公司 | Bidirectional flow hard sealing ball valve |
| CN205371656U (en) * | 2016-01-18 | 2016-07-06 | 株洲南方阀门股份有限公司 | Bidirectional metal hard seal butterfly valve |
-
2017
- 2017-11-28 CN CN201711210487.6A patent/CN107842628B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477057A (en) * | 1980-12-12 | 1984-10-16 | Matkemi Ag | Sealing device for valves |
| DE3819301A1 (en) * | 1988-06-03 | 1989-12-07 | Rautenkranz Int Hermann | Ball valve for shutting off pipes, having a floating spherical plug and radially displaceable seat rings |
| WO1997009550A1 (en) * | 1995-09-07 | 1997-03-13 | Naf Ab | Self-adjusting ball valve assembly |
| US5755427A (en) * | 1996-02-23 | 1998-05-26 | Naf Ab | Self adjusting ball valve assembly |
| CN200943717Y (en) * | 2006-05-19 | 2007-09-05 | 铁岭良工阀门有限责任公司 | Floating metal sealed butterfly valve |
| CN201111575Y (en) * | 2007-08-29 | 2008-09-10 | 张启权 | Bidirectional pressure metallic hard sealing butterfly valve |
| JP2011241943A (en) * | 2010-05-20 | 2011-12-01 | Tyco Flow Control Japan Kk | Ball valve |
| CN202561109U (en) * | 2012-05-22 | 2012-11-28 | 永嘉县天天阀门厂 | V-shaped ball valve |
| CN203322300U (en) * | 2013-07-09 | 2013-12-04 | 铁岭特种阀门股份有限公司 | Three-dimensional compensation and two-direction metal sealing butterfly valve |
| CN203463678U (en) * | 2013-08-07 | 2014-03-05 | 中阀科技(长沙)阀门有限公司 | High-temperature high-pressure bidirectional metal hard sealing butterfly valve |
| CN203940028U (en) * | 2014-06-20 | 2014-11-12 | 浙江西铁阀门有限公司 | Bidirectional flow hard sealing ball valve |
| CN205371656U (en) * | 2016-01-18 | 2016-07-06 | 株洲南方阀门股份有限公司 | Bidirectional metal hard seal butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107842628A (en) | 2018-03-27 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1/2, Building 7, Zone 15, Wanyang Zhongchuang City, Bihu Town, Liandu District, Lishui City, Zhejiang Province, 325102 Patentee after: XITIE VALVE TECHNOLOGY CO.,LTD. Country or region after: China Address before: 325102 East Ou Industrial Zone, Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: XITIE VALVE TECHNOLOGY CO.,LTD. Country or region before: China |
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| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Bidirectional universal automatic compensation valve seat pressure plate type valve Granted publication date: 20230901 Pledgee: Zhejiang Lishui Liandu Rural Commercial Bank Co.,Ltd. Dazhong Branch Pledgor: XITIE VALVE TECHNOLOGY CO.,LTD. Registration number: Y2024980003517 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |