CN201963963U - Extraction check valve - Google Patents
Extraction check valve Download PDFInfo
- Publication number
- CN201963963U CN201963963U CN2010206752269U CN201020675226U CN201963963U CN 201963963 U CN201963963 U CN 201963963U CN 2010206752269 U CN2010206752269 U CN 2010206752269U CN 201020675226 U CN201020675226 U CN 201020675226U CN 201963963 U CN201963963 U CN 201963963U
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- CN
- China
- Prior art keywords
- valve
- flap
- extraction check
- rod
- valve rod
- 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 - Lifetime
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Abstract
The utility model relates to an extraction check valve, which comprises a valve body, a valve base, a valve clack, a valve rod, a valve cover and a controlling mechanism. The controlling mechanism adopts a piston-connecting rod mechanism, an angle of 60 degrees is formed between a valve base sealing surface and a horizontal plane, the valve rod is fixed on the valve body, and the valve clack is movably arranged on the valve rod and connected with the piston-connecting rod mechanism through a revolving shaft connected fixedly with the valve clack. The extraction check valve has the advantages that the rotation friction force is small, the valve clack is easy and quick to open and close, and the load shedding of a turbine can be avoided when the extraction check valve is used in an outlet pipeline of the turbine.
Description
Technical field
The utility model relates to a kind of safety check, particularly about a kind of safety check that draws gas that is used on the steam turbine outlet conduit.
Background technique
The safety check of bleeding mainly is installed on the generator steam turbine outlet conduit, prevent that the medium refluence from damaging steam turbine set, its structure mainly contains valve body, valve seat, flap, valve rod, valve gap, control mechanism to be formed, and its control mechanism has the control flap closes Slow Close slowly when rapid-closure damper and flap are near valve seat when medium flows backwards function.But existing its valve rod of safety check and the flap of drawing gas is one, and flap rotatablely moves in valve body with valve rod in opening-closing process, and frictional force is very big and influence the flap movement speed.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides that a kind of keying frictional force is little, the light safety check that draws gas fast of action.
The technological scheme that realizes the utility model purpose comprises valve body, valve seat, flap, valve rod, valve gap, control mechanism, control mechanism adopts piston crank mechanism, mainly be to have 60 ° of angles between sealing surface of seat and the horizontal plane, valve rod is fixed on the valve body, flap is movably installed on the valve rod, and by being connected with piston crank mechanism with its fixedly connected rotating shaft.
The utility model beneficial effect compared with prior art is that valve rod maintains static, and rotating shaft drives flap and rotates with valve rod, and its spin friction power is little, flap opens and closes light quick.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Embodiment
The safety check of bleeding as shown in Figure 1 comprises valve body 1, valve seat 2, flap 3, valve rod 4, valve gap 5 and control mechanism 6.Control mechanism 6 adopts piston crank mechanism, has 60 ° of angles between valve seat 2 sealing surfaces and the horizontal plane, and flap 3 is opened fast.Valve rod 4 is fixedly mounted on the valve body 1, and flap 3 is movably installed on the valve rod 4 by pivoted arm 8, and by being connected with piston crank mechanism with its fixedly connected rotating shaft 7.Piston crank mechanism is controlled by Pneumatic actuator, and the power source of its piston cylinder is provided by solenoid valve control circuit by pressurized air, and solenoid valve control circuit adopts normal open type structure, can reduce rate of fault, improves the unit operation Security.Valve body 1 inwall above flap 3 opening directions is provided with limit stoper 9.
Claims (1)
1. safety check that draws gas, comprise valve body (1), valve seat (2), flap (3), valve rod (4), valve gap (5), control mechanism (6), control mechanism (6) adopts piston crank mechanism, it is characterized in that having 60 ° of angles between valve seat (2) sealing surface and the horizontal plane, valve rod (4) is fixedly mounted on the valve body (1), flap (3) is movably installed on the valve rod (4), and by being connected with piston crank mechanism with its fixedly connected rotating shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206752269U CN201963963U (en) | 2010-12-13 | 2010-12-13 | Extraction check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206752269U CN201963963U (en) | 2010-12-13 | 2010-12-13 | Extraction check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963963U true CN201963963U (en) | 2011-09-07 |
Family
ID=44526500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206752269U Expired - Lifetime CN201963963U (en) | 2010-12-13 | 2010-12-13 | Extraction check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963963U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808976A (en) * | 2012-08-16 | 2012-12-05 | 大连大高阀门股份有限公司 | One-section extraction check valve |
| CN102808977A (en) * | 2012-08-17 | 2012-12-05 | 大连大高阀门股份有限公司 | High exhaust check valve of critical and supercritical thermal power generating set valve |
| CN112361037A (en) * | 2020-11-19 | 2021-02-12 | 沈伟光 | Quick-closing type air-extracting check valve |
-
2010
- 2010-12-13 CN CN2010206752269U patent/CN201963963U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808976A (en) * | 2012-08-16 | 2012-12-05 | 大连大高阀门股份有限公司 | One-section extraction check valve |
| CN102808977A (en) * | 2012-08-17 | 2012-12-05 | 大连大高阀门股份有限公司 | High exhaust check valve of critical and supercritical thermal power generating set valve |
| CN102808977B (en) * | 2012-08-17 | 2014-03-19 | 大连大高阀门股份有限公司 | High exhaust check valve of critical and supercritical thermal power generating set valve |
| CN112361037A (en) * | 2020-11-19 | 2021-02-12 | 沈伟光 | Quick-closing type air-extracting check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180910 Address after: 323006 3 Bi Zhong Road, Bi Hu Town, Liandu District, Lishui, Zhejiang. Patentee after: South Valve Technology Co., Ltd. Address before: 325102 Industrial Zone, three bridges, Ou Bei Town, Yongjia County, Zhejiang Patentee before: Southern Valve Manufacturing Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |