CN2755363Y - High temperature and pressure ceramic valve of power station - Google Patents
High temperature and pressure ceramic valve of power station Download PDFInfo
- Publication number
- CN2755363Y CN2755363Y CN 200420029890 CN200420029890U CN2755363Y CN 2755363 Y CN2755363 Y CN 2755363Y CN 200420029890 CN200420029890 CN 200420029890 CN 200420029890 U CN200420029890 U CN 200420029890U CN 2755363 Y CN2755363 Y CN 2755363Y
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- China
- Prior art keywords
- valve
- ceramic
- high temperature
- flap
- valve body
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- Expired - Fee Related
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- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
The utility model relates to a cutoff valve, particularly a high temperature and pressure ceramic cufoff valve used in power stations. The utility model can realize light abrasions, corrosion resistance, tight seal, etc., so that the service life can be extended. The utility model is characterized in that one side of an outlet of an inner valve cavity of a valve body is provided with an annular ceramic valve seat, the sealing surface of a valve clack is ceramic, and the valve clack is connected with an actuating mechanism; a guide rail of the valve clack is added, and an inner cavity of the valve body is lined with a ceramic layer. The utility model is applied to steam or liquid media with rapid high temperature and pressure difference flow speed, and is also suitable for conveying high and medium pressure media with solid particles. The valve cavity can block the impact and the corrosion of fluid media, the utility model realizes light abrasions, corrosion resistance, tight seal, etc., and the service life can be extended.
Description
Technical field:
The present invention relates to a kind of stop valve.Particularly a kind of High Temperature High Pressure pottery stop valve that is applicable to the power station.
Background technique:
Valve is a kind of device of controlling fluid motion.Stop valve is a kind of cut-off valve of extensive use, is mainly used in to cut off the pipeline medium.It comprises valve body, flap, valve seat and actuating mechanism; On valve body, be provided with import and outlet; Valve seat is a seal ring, is located at the outlet port of valve.
When valve is in opening state (shown in Figure 2), flowing medium promptly enters valve from import, flows out valve from outlet.When the action actuating mechanism, flap moves downward, the circulation name area of fluid reduces, flowing medium is subjected to certain restriction by the flow of valve, when actuating mechanism drive flap is closed fully (shown in Figure 1), the ceramic seal face of flap and the ceramic seal face on the valve body fit tightly, and flowing medium can't be passed through, valve closing, the fluid restraining can not be passed through from valve.
Because at present in the circulating pump system in power station, stop valve is in the operation down of high temperature, high pressure all the time, under this abominable runnability, to produce complicated eddy current, turbulent flow and disturbance during throttling place of High Pressure Difference medium by stop valve, the cavitation of Chan Shenging, mechanical vibration and noise are very serious to washing away with damage of valve part therefrom, the some of them stop valve only several hours or just damage in a short time, has lost control action or Motor ability.This not only influences the normal operation of generator set, and can bring potential safety hazard.
The damage of flap and valve seat causes valve seal failure or poorly sealed, has lost the performance of stop valve, must change Sealing or valve to guarantee the proper functioning of valve, influences the working life of valve.
Summary of the invention:
The present invention aims to provide the novel cutoff valve of a kind of sealing surface for pottery, and it can realize the light wearing and tearing of stop valve, and is corrosion-resistant, seals performances such as tight, and increases the service life.
The present invention includes valve body, flap, valve seat and actuating mechanism; On valve body, be provided with import and outlet; The sealing surface place of valve body is provided with ceramic-seal ring; Actuating mechanism is connected with flap; Send out intracoelomic cavity lining ceramic layer (shown in Figure 1).
Flap of the present invention can be a bulk ceramics.
Pottery of the present invention can be a zirconia-based ceramics, alumina-based ceramic, silica-based pottery, mullite-based ceramic, silicon-nitride-based ceramic.
Operation principles of the present invention is:
Fit when tight when ceramic-seal ring on the flap and valve seat, flowing medium can't enter outlet by passage, and the present invention is closed condition.
When the actuating mechanism action, the sealing surface action that drives flap breaks away from the sealing surface of valve seat, and the area that passes through of flowing medium increases gradually, and flow increases gradually, and up to the valve complete opening, the flowing medium maximum flow is passed through.Complete opening of the present invention.
Because the present invention is provided with ceramic valve seat, on flap, be provided with ceramic-seal ring, lining pottery in valve body, the characteristic of the hardness height that pottery has, wear-resistant, corrosion-resistant, stable chemical performance can be resisted washing away and corroding of flowing medium, increases the service life.
In sum, the present invention is a kind of High Temperature High Pressure pottery stop valve.It can realize the light wearing and tearing of stop valve, and is corrosion-resistant, seals performances such as tight, to increase the service life.
Description of drawings:
Fig. 1 is an overall structure front elevational schematic of the present invention, is closed condition.
Fig. 2 is an opening state.
Fig. 3 is the flap structural representation.
Fig. 4 derives for of the present invention for flange is welded to connect the structure front elevational schematic of High Temperature High Pressure straight-through stop valve.
Among the figure: 1-valve body, 2-import, the sealing surface on 3-valve body, the sealing surface on 4-flap, 5-flap, 6-actuating mechanism, 7-ceramic layer, 8-outlet, 9-stoneware pipe, 10-guide rail.
Embodiment:
With inside nominal diameter DN:100mm, the present invention of nominal pressure PN:10Mpa is embodiment:
The present invention is used for the circulating pump system of power station, the import 2 and the outlet 8 of valve body 1 is installed in the pipeline respectively.The ceramic valve seat 3 of valve body adopts zirconia-based ceramics, establishes on flap 5 with zirconium oxide level ceramic-seal ring 4, valve pocket lining zirconia-based ceramics layer 7.
Under the present invention in off position, medium enters valve pocket from import 2, and ceramic valve seat 3 fits tightly with the ceramic-seal ring 4 of flap 5, makes outlet be sealing state, and import 2 and the pressure difference that exports between 8 are 10Mpa.When actuating mechanism 6 runnings, drive flap 5 and move upward, ceramic valve seat 3 breaks away from the ceramic-seal ring 4 of flap 5, and medium passes through, and flow increases gradually, and until complete opening, the medium maximum flow is passed through.
Because the present invention has light wearing and tearing, corrosion-resistant, sealing performance such as tight, increasing the service life to reach 20 months, and general stop valve only uses and promptly will change as some months even in several hours.
Claims (3)
1. a power station comprises valve body, flap, valve seat and actuating mechanism with High Temperature High Pressure pottery stop valve; On valve body, be provided with import and outlet; The sealing part of valve body is provided with ceramic-seal ring; The flap sealing surface also is a pottery; Actuating mechanism is connected with flap; Flap has increased guide rail; Body cavity lining ceramic layer.
According to the described power station of claim 1 with High Temperature High Pressure pottery stop valve, it is characterized in that the sealed member of valve body can partially ceramic, also can be bulk ceramics.
3. according to the described power station of claim 1 High Temperature High Pressure pottery stop valve, it is characterized in that the import and export of valve body installs bushing pipe and the protection ceramic plate that structural ceramics is made additional, make runner avoid washing away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029890 CN2755363Y (en) | 2004-10-10 | 2004-10-10 | High temperature and pressure ceramic valve of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029890 CN2755363Y (en) | 2004-10-10 | 2004-10-10 | High temperature and pressure ceramic valve of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2755363Y true CN2755363Y (en) | 2006-02-01 |
Family
ID=35928991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420029890 Expired - Fee Related CN2755363Y (en) | 2004-10-10 | 2004-10-10 | High temperature and pressure ceramic valve of power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2755363Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143659A (en) * | 2017-06-19 | 2017-09-08 | 永嘉县信诚科技服务有限公司 | Heat-resistant, wear-resistant stop valve |
| CN109506001A (en) * | 2018-12-03 | 2019-03-22 | 四川鹿台科技有限公司 | A kind of novel protection against erosion compensation flap |
-
2004
- 2004-10-10 CN CN 200420029890 patent/CN2755363Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143659A (en) * | 2017-06-19 | 2017-09-08 | 永嘉县信诚科技服务有限公司 | Heat-resistant, wear-resistant stop valve |
| CN109506001A (en) * | 2018-12-03 | 2019-03-22 | 四川鹿台科技有限公司 | A kind of novel protection against erosion compensation flap |
| CN109506001B (en) * | 2018-12-03 | 2020-03-31 | 四川鹿台科技有限公司 | Novel anti-scouring balance valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Shengkai Industrial Techn Development Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Shengkai Industrial Techn Development Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060201 Termination date: 20121010 |