CN104595508A - Valve sealing device - Google Patents
Valve sealing device Download PDFInfo
- Publication number
- CN104595508A CN104595508A CN201510034076.0A CN201510034076A CN104595508A CN 104595508 A CN104595508 A CN 104595508A CN 201510034076 A CN201510034076 A CN 201510034076A CN 104595508 A CN104595508 A CN 104595508A
- Authority
- CN
- China
- Prior art keywords
- base
- valve
- sealing
- valve core
- seal
- 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.)
- Pending
Links
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a valve sealing device. A valve comprises a base, a valve core and a valve cage, wherein the valve core is installed on the base, the valve cage covers the valve core and the base, and a plurality of flow holes are formed in the side wall of the valve cage. The sealing device comprises a valve core sealing surface and a sealing bulge, wherein the valve core sealing surface is arranged on the bottom end of the valve core, the sealing bulge is arranged on the base, and the valve core sealing surface is a horizontal surface and is tightly combined with the sealing bulge. According to the technical scheme, the valve core sealing surface and the base sealing surface are designed into horizontal surfaces, and the combination position of the valve core sealing surface and the base sealing surface is on the inner side of the sealing surface and is far from the flow holes of the valve cage, so that media such as water vapor and the like which pass through the flow holes cannot or are difficult to directly wash the sealing surfaces and the combination position of the sealing surfaces, and good sealing performance between the valve core and the base is guaranteed.
Description
Technical field
The present invention relates to a kind of valve sealing device.
Background technique
Power plant valve, is mainly applicable on the pipeline of the various system of power plant, cuts off or connects pipeline medium, as power plant desulphurization system, ash disposal system, is applicable to the conveying of the media such as water, steam, grey dreg slurry, dry powder.The feature of power plant valve compared with other valve products is high temperature high voltage resistant, and have unique selfsealings design, and pressure is higher, sealability is more reliable.Due to performance technologies characteristic, operating mode special make product also form other products the feature that do not substitute.
The valve cage that valve generally includes fixed base, is arranged on the spool on base and is located on spool and base, the sidewall of valve cage is provided with multiple flow through hole to be passed through to allow the media such as steam.Spool and base are respectively equipped with the sealing surface mutually connected, and sealing face is generally plane of inclination, and such steam is easy this plane of inclination of erosion after metering orifice, thus causes the sealing between sealing surface to be deteriorated, and causes the bad leakage caused of valve closing.
Summary of the invention
The object of the invention is to for above-mentioned defect of the prior art, provide a kind of valve sealing device of improvement, its sealability is better, and structure is simple.
For achieving the above object, present invention employs following technological scheme: a kind of valve sealing device, the wherein valve valve cage that comprises base, be arranged on the spool on base and be located on spool and base, the sidewall of valve cage offers multiple metering orifice, it is characterized in that: seal arrangement comprises the valve core sealed cover being arranged on spool bottom and the seal convexity be arranged on base, and valve core sealed cover is horizontal plane and combines with seal convexity.
In addition, the present invention also proposes following attached technological scheme:
Seal convexity is arranged on base seal face and the inner side in close base seal face.
Seal convexity and base seal face one-body molded.
Seal convexity roughly has triangle.
Base seal face is horizontal plane.
Compared to prior art, the invention has the advantages that: the technical program is by being all set to horizontal plane by valve core sealed cover and base seal face, and junction is between the two positioned at the position of the inner side of sealing surface the metering orifice away from valve cage, so through metering orifice the medium such as steam can not or the not easily directly above-mentioned sealing surface of erosion and junction thereof, thus ensure that sealing good between good spool and base, avoid the valve leaks because poor sealing causes.And by an one-body molded seal convexity on base seal face, its shape and structure are all simple, reliable.
Accompanying drawing explanation
Fig. 1 corresponds to the valve sealing device of present pre-ferred embodiments at the plane view of primary importance relation.
Fig. 2 is the anti-large figure corresponding to b circle in Fig. 1.
Fig. 3 is the plane view of valve sealing device in second place relation of Fig. 1.
Fig. 4 is the enlarged view corresponding to c circle in Fig. 3.
Embodiment
Below in conjunction with preferred embodiment and accompanying drawing thereof, technical solution of the present invention is further non-limitingly described in detail.
See figures.1.and.2, a kind of valve, especially power plant valve, roughly there is axially symmetric structure, it valve cage 5 comprising base 1, be arranged on the spool 3 on base 1 and be located on spool 3 and base 1, spool 3 is driven by valve rod 2 and can carry out moving up and down with by valve open or closedown relative to base 1.The sidewall of valve cage 5 offers multiple metering orifice 6 to pass through with media such as water supply, steam.When spool 3 moves up and down, corresponding metering orifice 6 can be carried out airtight or opens, thus regulate the rate-of flow entering valve internal according to actual needs.Sealing 4 is provided with between the bottom of valve cage 5 and the top of base 1.
Above-mentioned valve is also provided with seal arrangement 7, it valve core sealed cover 11 comprising the bottom being arranged on spool 3 and the seal convexity 13 be arranged on base 1 both sides 10.This valve core sealed cover 11 is horizontal plane and combines with seal convexity 13.Base 1 is provided with base seal face 12, and it is also horizontal plane.Seal convexity 13 is arranged on base seal the face 12 and inner side in close base seal face 12.Seal convexity 13 roughly has triangle, and one-body molded with base seal face 12.
Like this, as shown in Figure 3 and Figure 4, after spool 3 and base 1 connect, valve core sealed cover 11 and seal convexity 13 form close contact in its junction 17.After to the debugging of valve, spool 3 is under the suppressing action of final controlling element (not shown), the wedge angle of seal convexity 13 can be driven plain and form long and narrow surface of contact 15, be conducive to the slight deformation of compensating spool 3 like this and be conducive to spool centering, make on the above-mentioned base 1 of support that spool 3 is more firm, and sealing between the two also becomes better.And, because valve core sealed cover 11 and base seal face 12 are horizontal plane, and valve core sealed cover 11 is positioned at the inner side of above-mentioned sealing surface 11,12 with the junction 17 of seal convexity 13, and away from the metering orifice 6 of valve cage 5, so can along arrow a to flowing through the medium such as steam of metering orifice 6, can not or the not easily directly above-mentioned sealing surface 11,12 of erosion and junction 17 thereof, thus further ensure that good sealing property between the two, avoid the valve leaks because poor sealing causes.
It is pointed out that above-mentioned preferred embodiment is only and technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. a valve sealing device, the wherein valve valve cage that comprises base, be arranged on the spool on base and be located on spool and base, the sidewall of valve cage offers multiple metering orifice, it is characterized in that: seal arrangement comprises the valve core sealed cover being arranged on spool bottom and the seal convexity be arranged on base, and valve core sealed cover is horizontal plane and contacts with seal convexity.
2. invention seal arrangement according to claim 1, is characterized in that: seal convexity to be arranged on base seal face and near the inner side in base seal face.
3. invention seal arrangement according to claim 2, is characterized in that: seal convexity and base seal face one-body molded.
4. invention seal arrangement according to claim 1, is characterized in that: seal convexity roughly has triangle.
5. invention seal arrangement according to claim 2, is characterized in that: base seal face is horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034076.0A CN104595508A (en) | 2015-01-23 | 2015-01-23 | Valve sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034076.0A CN104595508A (en) | 2015-01-23 | 2015-01-23 | Valve sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104595508A true CN104595508A (en) | 2015-05-06 |
Family
ID=53121466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510034076.0A Pending CN104595508A (en) | 2015-01-23 | 2015-01-23 | Valve sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104595508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763834A (en) * | 2017-03-24 | 2017-05-31 | 徐传堂 | A kind of minimum flow valve |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0167252A1 (en) * | 1984-05-21 | 1986-01-08 | Control Components Inc. | Valves and components therefor |
| US5544855A (en) * | 1993-09-15 | 1996-08-13 | Wabco Vermogensverwaltungs Gmbh | Valve |
| CN2360684Y (en) * | 1999-02-04 | 2000-01-26 | 米力田 | Prefiltering double sealed sub-discharing valve |
| JP2004316679A (en) * | 2003-04-11 | 2004-11-11 | Ckd Corp | Flow control valve |
| US20060131531A1 (en) * | 2004-11-30 | 2006-06-22 | Keihin Corporation | Solenoid-operated valve for use with fuel cells |
| DE102006038156A1 (en) * | 2006-08-16 | 2008-02-21 | Karl Dungs Gmbh & Co. Kg | Valve i.e. gas valve, has connecting device eccentrically transferring forces directed away from valve seat from control rod to valve locking element, where valve locking element is pivotably supported in different directions at control rod |
| CN101196242A (en) * | 2007-12-29 | 2008-06-11 | 株洲南方阀门股份有限公司 | Quick service type dual-sealing checking-valve |
| US20090320931A1 (en) * | 2008-06-30 | 2009-12-31 | Fisher Controls International Llc | Universal trim control valve and method of making such a control valve |
| CN201391607Y (en) * | 2009-04-22 | 2010-01-27 | 大连亨利测控仪表工程有限公司 | Cage type back-pressure pilot-operated control valve |
| CN102345742A (en) * | 2010-07-29 | 2012-02-08 | 浙江正华阀门厂 | Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat |
| CN202852183U (en) * | 2012-09-27 | 2013-04-03 | 天津精通控制仪表技术有限公司 | II-level cavitation erosion prevention cage type adjusting valve |
| CN203146854U (en) * | 2013-03-19 | 2013-08-21 | 上海华尔德电站阀门有限公司 | Valve structure capable of preventing sealing face from being washed |
| CN103363123A (en) * | 2012-03-26 | 2013-10-23 | 费希尔控制国际公司 | Control valve seal assembly energized by shape memory alloys and fluid valves comprising same |
| CN103939623A (en) * | 2014-05-05 | 2014-07-23 | 无锡卓尔阀业有限公司 | Ultrahigh pressure steam emptying valve |
| CN104214417A (en) * | 2014-08-16 | 2014-12-17 | 大唐国际发电股份有限公司张家口发电厂 | Anti-washing throttle valve sealing surface structure |
| CN204533590U (en) * | 2015-01-23 | 2015-08-05 | 吴振庭 | Valve sealing device |
-
2015
- 2015-01-23 CN CN201510034076.0A patent/CN104595508A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0167252A1 (en) * | 1984-05-21 | 1986-01-08 | Control Components Inc. | Valves and components therefor |
| US5544855A (en) * | 1993-09-15 | 1996-08-13 | Wabco Vermogensverwaltungs Gmbh | Valve |
| CN2360684Y (en) * | 1999-02-04 | 2000-01-26 | 米力田 | Prefiltering double sealed sub-discharing valve |
| JP2004316679A (en) * | 2003-04-11 | 2004-11-11 | Ckd Corp | Flow control valve |
| US20060131531A1 (en) * | 2004-11-30 | 2006-06-22 | Keihin Corporation | Solenoid-operated valve for use with fuel cells |
| DE102006038156A1 (en) * | 2006-08-16 | 2008-02-21 | Karl Dungs Gmbh & Co. Kg | Valve i.e. gas valve, has connecting device eccentrically transferring forces directed away from valve seat from control rod to valve locking element, where valve locking element is pivotably supported in different directions at control rod |
| CN101196242A (en) * | 2007-12-29 | 2008-06-11 | 株洲南方阀门股份有限公司 | Quick service type dual-sealing checking-valve |
| US20090320931A1 (en) * | 2008-06-30 | 2009-12-31 | Fisher Controls International Llc | Universal trim control valve and method of making such a control valve |
| CN201391607Y (en) * | 2009-04-22 | 2010-01-27 | 大连亨利测控仪表工程有限公司 | Cage type back-pressure pilot-operated control valve |
| CN102345742A (en) * | 2010-07-29 | 2012-02-08 | 浙江正华阀门厂 | Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat |
| CN103363123A (en) * | 2012-03-26 | 2013-10-23 | 费希尔控制国际公司 | Control valve seal assembly energized by shape memory alloys and fluid valves comprising same |
| CN202852183U (en) * | 2012-09-27 | 2013-04-03 | 天津精通控制仪表技术有限公司 | II-level cavitation erosion prevention cage type adjusting valve |
| CN203146854U (en) * | 2013-03-19 | 2013-08-21 | 上海华尔德电站阀门有限公司 | Valve structure capable of preventing sealing face from being washed |
| CN103939623A (en) * | 2014-05-05 | 2014-07-23 | 无锡卓尔阀业有限公司 | Ultrahigh pressure steam emptying valve |
| CN104214417A (en) * | 2014-08-16 | 2014-12-17 | 大唐国际发电股份有限公司张家口发电厂 | Anti-washing throttle valve sealing surface structure |
| CN204533590U (en) * | 2015-01-23 | 2015-08-05 | 吴振庭 | Valve sealing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763834A (en) * | 2017-03-24 | 2017-05-31 | 徐传堂 | A kind of minimum flow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |
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| RJ01 | Rejection of invention patent application after publication |