CN204533590U - Valve sealing device - Google Patents
Valve sealing device Download PDFInfo
- Publication number
- CN204533590U CN204533590U CN201520047071.7U CN201520047071U CN204533590U CN 204533590 U CN204533590 U CN 204533590U CN 201520047071 U CN201520047071 U CN 201520047071U CN 204533590 U CN204533590 U CN 204533590U
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- CN
- China
- Prior art keywords
- base
- valve
- spool
- seal
- sealing device
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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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of valve sealing device, and wherein the 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.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 closely mutually with seal convexity.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, ensure that sealing good between good spool and base.
Description
Technical field
The utility model 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.
Model utility content
The purpose of this utility model is that, 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 realizing above-mentioned model utility object, the utility model have employed 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 utility model 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 utility model has the advantage of: 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 the utility model preferred embodiment 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 solutions of the utility model are 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 to be noted; above-mentioned preferred embodiment is only and technical conceive of the present utility model and feature is described; its object is to person skilled in the art can be understood content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
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. valve sealing device 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. valve sealing device according to claim 2, is characterized in that: seal convexity and base seal face one-body molded.
4. valve sealing device according to claim 1, is characterized in that: seal convexity roughly has triangle.
5. valve sealing device according to claim 2, is characterized in that: base seal face is horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047071.7U CN204533590U (en) | 2015-01-23 | 2015-01-23 | Valve sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047071.7U CN204533590U (en) | 2015-01-23 | 2015-01-23 | Valve sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533590U true CN204533590U (en) | 2015-08-05 |
Family
ID=53747599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520047071.7U Expired - Fee Related CN204533590U (en) | 2015-01-23 | 2015-01-23 | Valve sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595508A (en) * | 2015-01-23 | 2015-05-06 | 吴振庭 | Valve sealing device |
-
2015
- 2015-01-23 CN CN201520047071.7U patent/CN204533590U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595508A (en) * | 2015-01-23 | 2015-05-06 | 吴振庭 | Valve sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20220123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |