CN2888201Y - Electric airtight valve for nuclear power station - Google Patents
Electric airtight valve for nuclear power station Download PDFInfo
- Publication number
- CN2888201Y CN2888201Y CN 200620069681 CN200620069681U CN2888201Y CN 2888201 Y CN2888201 Y CN 2888201Y CN 200620069681 CN200620069681 CN 200620069681 CN 200620069681 U CN200620069681 U CN 200620069681U CN 2888201 Y CN2888201 Y CN 2888201Y
- Authority
- CN
- China
- Prior art keywords
- valve
- seal ring
- valve shaft
- valve body
- ring
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a nuclear safe class electric air closed-type valve, comprising an electrical device, a valve body, a butterfly board, a valve base, a valve shaft, filling part, a press cover for the filling part, a press ring and a seal ring; the electrical device connects the valve body through a support, the seal ring is arranged on the butterfly board through the press ring, the valve shaft is sealed through the filling part and the press cover, there is an eccentric structure L2 on the seal surface between the axis of the valve shaft, the seal ring and the valve base; there is also an eccentric structure L1 between the axis of the valve shaft and the central line of the valve body. The utility model has adopted a double-eccentric structure and has the advantages of convenient maintenance of valve gate, small opening torque and flexible movement.
Description
Affiliated technical field
The utility model relates to a kind of valve, especially a kind of electric air airtight valve that is used in pressurized-water reactor nuclear power plant.
Background technique
Be used in the electric air airtight valve of the radioactivity power house ventilation system of pressurized-water reactor nuclear power plant at present, adopt traditional rubber seal butterfly valve form more, though sealing is reliable, have the installation and maintenance difficulty, open and close the big deficiency of moment.
Summary of the invention
For overcoming existing electric air airtight valve installation and maintenance difficulty, open and close the big deficiency of moment, the utility model provides a kind of convenient for installation and maintenance, electric air airtight valve of opening and closing light and flexible.
The technological scheme that its technical problem of solution of the present utility model adopts is a kind of nuclear safe level electric air airtight valve, comprise Electric actuator, valve body, butterfly plate, valve seat, valve shaft, filler, Gland, trim ring, seal ring, Electric actuator is connected by support with valve body, seal ring is installed on the butterfly plate by trim ring, valve shaft has an eccentric L2 by filler and Gland sealing between the sealing surface that the axis of valve shaft and seal ring and valve seat constitute; Also there is an eccentric L1 between the axis of valve shaft and the center line of valve body.
The beneficial effects of the utility model are to have adopted two eccentric structures, and valve is convenient for installation and maintenance, and keying moment is little, the action light and flexible.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is embodiment's a tectonic maps
Fig. 2 is the sectional structural map of Fig. 1
Among the figure: 1. Electric actuator; 2. support; 3. Gland; 4. filler; 5. valve shaft; 6. valve body; 7. butterfly plate; 8. trim ring; 9. valve seat; 10. seal ring.
Embodiment
As shown in Figure 1, 2, a kind of nuclear safe level electric air airtight valve, comprise Electric actuator 1, valve body 6, butterfly plate 7, valve seat 9, valve shaft 5, filler 4, Gland 3, trim ring 8, seal ring 10, Electric actuator 1 is connected by support 2 with valve body 6, seal ring 10 is installed on the butterfly plate 7 by trim ring 8, valve shaft 5 has an eccentric L2 by filler 4 and Gland 3 sealings between the sealing surface that the axis of valve shaft 5 and seal ring 10 and valve seat 9 constitute; Also there is an eccentric L1 between the center line of the axis of valve shaft 5 and valve body 6.Because seal ring 10 is installed on the butterfly plate 7, can change seal ring 10 on pipeline, and is convenient for installation and maintenance, and will not disintegrate by valve, in addition owing to the existence of two throw of eccentric L1 and L2, seal ring 10 was thrown off in moment of opening and valve seat 9, keying moment is little, the action light and flexible.
Claims (1)
1, a kind of nuclear safe level electric air airtight valve, comprise Electric actuator, valve body, butterfly plate, valve seat, valve shaft, filler, Gland, trim ring, seal ring, Electric actuator is connected by support with valve body, seal ring is installed on the butterfly plate by trim ring, valve shaft is characterized in that: between the sealing surface that the axis of described valve shaft and seal ring and valve seat constitute an eccentric L2 is arranged by filler and Gland sealing; There is an eccentric L1 between the axis of described valve shaft and the center line of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069681 CN2888201Y (en) | 2006-02-25 | 2006-02-25 | Electric airtight valve for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069681 CN2888201Y (en) | 2006-02-25 | 2006-02-25 | Electric airtight valve for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888201Y true CN2888201Y (en) | 2007-04-11 |
Family
ID=38046770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620069681 Expired - Fee Related CN2888201Y (en) | 2006-02-25 | 2006-02-25 | Electric airtight valve for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888201Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851762A (en) * | 2014-02-10 | 2014-06-11 | 中船重工天禾船舶设备江苏有限公司 | Circular air regulating door |
-
2006
- 2006-02-25 CN CN 200620069681 patent/CN2888201Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851762A (en) * | 2014-02-10 | 2014-06-11 | 中船重工天禾船舶设备江苏有限公司 | Circular air regulating door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226232 Nanyang Town, Qidong, Jiangsu Patentee after: Jiangsu Shentong Valve Co., Ltd. Address before: 226232 Nanyang Town, Qidong, Jiangsu Patentee before: Shentong Valve Co., Ltd., Jiangsu |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20100225 |