CN105650299A - Sealing structure for water stop ring of water turbine - Google Patents
Sealing structure for water stop ring of water turbine Download PDFInfo
- Publication number
- CN105650299A CN105650299A CN201410638699.4A CN201410638699A CN105650299A CN 105650299 A CN105650299 A CN 105650299A CN 201410638699 A CN201410638699 A CN 201410638699A CN 105650299 A CN105650299 A CN 105650299A
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- CN
- China
- Prior art keywords
- ring
- valve
- end cap
- valve body
- seal ring
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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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Abstract
The invention discloses a sealing structure for a water stop ring of a water turbine. By means of the sealing structure, the effect that the water stop ring of a valve is maintained or replaced under the condition that the water turbine is not disassembled or the valve is not dismantled from a pipeline can be ensured. The water stop ring, a valve body and an end cover are fixed and sealed in an embedded mode instead of being fixed together through bolts and other connecting parts. When the water stop ring is damaged, a ball valve telescopic joint and the end cover can be sequentially dismantled, and then the water stop ring is taken out from the valve body in a sliding mode. The water stop ring is put into the valve body after being repaired or replaced, then, the end cover is placed on the valve body and pressed tightly, and finally the ball valve telescopic joint is installed. The water turbine or the valve does not need to be disassembled in the whole dismantling process, and repairing and maintaining of the valve are facilitated significantly. In addition, due to the fact that the water stop ring is divided into a valve body ring body, a valve cavity ring body and an end cover ring body, and the valve cavity ring body has a gradient between the valve body ring body and the end cover ring body; moreover, the valve body ring body is inserted into the valve body, the end cover ring body is inserted into the end cover, accordingly, the sealing performance is improved greatly, and the service life is prolonged.
Description
Technical field
The present invention relates to the sealing structure of a kind of hydraulic turbine, be specifically related to hydraulic turbine seal ring and seal structure.
Background technology
Along with the development of hydroelectric machine industry, the various aspects of performance of the hydraulic turbine is constantly optimized, and particularly at seal aspect, various sealing means constantly improve and are used widely. But when sediment charge is bigger, majority can produce jam phenomenon, thus cause that seal ring loses sealing function. After jam, needing to be replaced the hydraulic turbine integral demounting during maintenance, working strength is relatively larger. And general sealing complicated structure, in addition it is also necessary to it is equipped with special compressed air system, such saving relating to being unfavorable for cost.
Summary of the invention
It is an object of the invention to provide a kind of hydraulic turbine seal ring and seal structure, have and simply seal structure, and convenient maintenance, it is not necessary to the integral demounting hydraulic turbine can be replaced.
For reaching above-mentioned purpose, the technical scheme is that hydraulic turbine seal ring seals structure, including valve body and end cap, the cavity installing seal ring it is provided with between described valve body and end cap inner face, described seal ring includes three parts successively, valve body ring, valve pocket ring and end cap ring, described valve body ring is identical with the external diameter of end cap ring, and the external diameter of described valve pocket ring is more than the external diameter of valve body ring and end cap ring; Described valve interior wall is stairstepping, and the stairstepping inwall of described valve body is corresponding with the installation site of the valve body ring on seal ring and valve pocket ring, and described end cap inwall is corresponding with the installation site of the end cap ring on seal ring, and described end cap outer face is connected with ball valve telescopic joint.
When adopting technique scheme, the sealing structure of the present invention can ensure when the hydraulic turbine is not taken apart or not valve from pipeline is pulled down, the seal ring of valve is keeped in repair and changes. Owing to being fixed not over connectors such as bolts between seal ring and valve body and end cap, but it is fixed sealing by nested mode. When seal ring damages, ball valve telescopic joint and end cap can be pulled down successively, then seal ring is taken out from slip in valve body. After seal ring reparation or changing, then seal ring is filled in valve body, cover end cap and compress, finally load ball valve telescopic joint. The hydraulic turbine or valve need not be disintegrated by whole unloading process, are very easy to the maintenance maintenance of valve. Furthermore, owing to seal ring divide into valve body ring, valve pocket ring and three parts of end cap ring, and valve pocket ring and other two parts form gradient, and valve body ring is inserted in valve body, end cap ring is inserted in end cap, drastically increases sealing property, extend service life.
Further, described end cap is provided with the O-ring seals sealed with ball valve telescopic joint.
Further, described ball valve telescopic joint is provided with the projection inserting end cap inwall. The end of seal ring is directly applied thrust by ball valve telescopic joint by above-mentioned being designed to, and improves sealing property.
Further, on described seal ring, circumference offers seal groove. When seal ring is subject to axial pressing force, seal groove can play the filling effect of deformation and compensation sealing, improves sealing property.
Further, described valve body ring is identical with the length of end cap ring. Above-mentioned design, it is possible to the artificial installation direction eliminating seal ring, it is to avoid maintenance causes sealing to decline by anti-loaded for seal ring, causes that service life reduces.
Further, the end cap ring portion of described seal ring is provided with and extracts screw. Said structure, it is possible to when dismounting seal ring, extracting tool is screwed in and extract in screw, by dismantling workpiece, seal ring is easily taken out, also can so use when putting into seal ring.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram that hydraulic turbine seal ring of the present invention seals constructive embodiment.
Detailed description of the invention
As it is shown in figure 1, hydraulic turbine seal ring of the present invention seals structure, include valve body 1 and the end cap 2 fixing with valve body 1, between the inner face of valve body 1 and end cap 2, form a cavity installing seal ring 3. This seal ring 3 includes three parts successively, i.e. valve body ring 31, valve pocket ring 32 and end cap ring 33. Wherein valve body ring 31 is identical with the external diameter of end cap ring 33, and the external diameter of valve pocket ring 32 is more than the external diameter of valve body ring 31 and end cap ring 33; It addition, valve body ring 31 is identical with the axial length of end cap ring 33. Above-mentioned design, it is possible to the artificial installation direction eliminating seal ring 3, it is to avoid maintenance causes sealing to decline by anti-loaded for seal ring 3, causes that service life reduces. The inwall of valve body 1 is stairstepping, the stairstepping inwall of valve body 1 is corresponding with the installation site of the valve body ring 31 on seal ring 3 and valve pocket ring 32, the inwall of described end cap 2 is corresponding with the installation site of the end cap ring 33 on seal ring 3, and the outer face of end cap 2 is connected with ball valve telescopic joint 4. End cap 2 is provided with the O-ring seals sealed with ball valve telescopic joint 4. Flexible 4 joints of ball valve are provided with the projection inserting end cap 2 inwall. The end of seal ring 3 is directly applied thrust by ball valve telescopic joint 4 by above-mentioned being designed to, and improves sealing property. Of coursing, on seal ring 3, circumference offers seal groove. When seal ring 3 is subject to axial pressing force, seal groove can play the filling effect of deformation and compensation sealing, improves sealing property. The end cap ring 33 of seal ring 3 is provided with extracts screw 34. Said structure, it is possible to when dismounting seal ring 3, extracting tool is screwed in and extract in screw 34, by dismantling workpiece, seal ring 3 is easily taken out, also can so use when putting into seal ring.
The sealing structure of the present invention can ensure when the hydraulic turbine is not taken apart or not valve from pipeline is pulled down, the seal ring 3 of valve is keeped in repair and changes. Owing to being fixed not over connectors such as bolts between seal ring 3 and valve body 1 and end cap 2, but it is fixed sealing by nested mode. When seal ring 3 damages, ball valve telescopic joint 4 and end cap 2 can be pulled down successively, then seal ring 3 is taken out from slip in valve body 1. After seal ring 3 is repaired or changed, then seal ring 3 is filled in valve body, cover end cap 2 and compress, finally load ball valve telescopic joint 4.The hydraulic turbine or valve need not be disintegrated by whole unloading process, are very easy to the maintenance maintenance of valve. Furthermore, owing to seal ring 3 divide into valve body ring 31, valve pocket ring 32 and 33 3 parts of end cap ring, and valve pocket ring 32 and other two parts form gradient, and valve body ring 31 is inserted in valve body, end cap ring 33 is inserted in end cap 2, drastically increases sealing property, extend service life.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; without departing from the inventive concept of the premise; some deformation and improvement can also be made; these also should be considered as protection scope of the present invention, and these are all without affecting effect of the invention process and practical applicability.
Claims (6)
1. hydraulic turbine seal ring seals structure, it is characterized in that, including valve body and end cap, the cavity installing seal ring it is provided with between described valve body and end cap inner face, described seal ring includes three parts successively, valve body ring, valve pocket ring and end cap ring, described valve body ring is identical with the external diameter of end cap ring, and the external diameter of described valve pocket ring is more than the external diameter of valve body ring and end cap ring; Described valve interior wall is stairstepping, and the stairstepping inwall of described valve body is corresponding with the installation site of the valve body ring on seal ring and valve pocket ring, and described end cap inwall is corresponding with the installation site of the end cap ring on seal ring, and described end cap outer face is connected with ball valve telescopic joint.
2. hydraulic turbine seal ring according to claim 1 seals structure, it is characterized in that, described end cap is provided with the O-ring seals sealed with ball valve telescopic joint.
3. hydraulic turbine seal ring according to claim 1 seals structure, it is characterized in that, described ball valve telescopic joint is provided with the projection inserting end cap inwall.
4. hydraulic turbine seal ring according to claim 1 seals structure, it is characterized in that, on described seal ring, circumference offers seal groove.
5. hydraulic turbine seal ring according to claim 1 seals structure, it is characterized in that, described valve body ring is identical with the length of end cap ring.
6. hydraulic turbine seal ring according to claim 1 seals structure, it is characterized in that, the end cap ring portion of described sealing is provided with extracts screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410638699.4A CN105650299A (en) | 2014-11-13 | 2014-11-13 | Sealing structure for water stop ring of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410638699.4A CN105650299A (en) | 2014-11-13 | 2014-11-13 | Sealing structure for water stop ring of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105650299A true CN105650299A (en) | 2016-06-08 |
Family
ID=56479135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410638699.4A Pending CN105650299A (en) | 2014-11-13 | 2014-11-13 | Sealing structure for water stop ring of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105650299A (en) |
-
2014
- 2014-11-13 CN CN201410638699.4A patent/CN105650299A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160608 |
|
| WD01 | Invention patent application deemed withdrawn after publication |