CN201416674Y - Steam bleeding check valve - Google Patents
Steam bleeding check valve Download PDFInfo
- Publication number
- CN201416674Y CN201416674Y CN2009201216671U CN200920121667U CN201416674Y CN 201416674 Y CN201416674 Y CN 201416674Y CN 2009201216671 U CN2009201216671 U CN 2009201216671U CN 200920121667 U CN200920121667 U CN 200920121667U CN 201416674 Y CN201416674 Y CN 201416674Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- valve rod
- rod
- steam bleeding
- 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 relates to a steam bleeding check valve, and structurally comprises a valve body, a valve seat, a valve flap, a valve rod, a valve cap and a control mechanism. The control mechanismadopts the piston link mechanism, the valve rod is fixed on the valve body, and the valve flap is movably mounted on the valve rod, and is connected with a rotating shaft fixedly connected with the valve flap and the piston link mechanism. The steam bleeding check valve has the advantages of small rotating frictional force and easy and quick opening and closing of the valve flap, and is suitable for a quick trip valve used for preventing medium from backflowing on an outlet pipeline of a thermal power plant steam turbine uint.
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 that draws gas 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 that 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.
Fig. 2 is the partial sectional view of A direction among the utility model Fig. 1.
Embodiment
The safety check that draws gas as shown in Figure 1 and Figure 2, comprise 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, valve rod 4 is fixedly mounted on the valve body 1, flap 3 is movably installed on the valve rod 4 by pivoted arm 8, and by being connected with piston crank mechanism 6 with its fixedly connected rotating shaft 7.Piston crank mechanism 6 is by Pneumatic actuator control, 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.The opening angle of flap 3 is 40 °, is the unlatching extreme higher position of flap 3 as dotted line position among Fig. 1.
Claims (2)
1, a kind of safety check that draws gas, comprise valve body (1), valve seat (2), flap (3), valve rod (4), valve gap (5) and control mechanism, control mechanism adopts piston crank mechanism (6), it is characterized in that 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 (6) with its fixedly connected rotating shaft (7).
2, the safety check that draws gas according to claim 1 is characterized in that the solenoid valve control circuit of power source supply circuit of the piston cylinder of piston crank mechanism (6) adopts normal open type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201216671U CN201416674Y (en) | 2009-06-03 | 2009-06-03 | Steam bleeding check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201216671U CN201416674Y (en) | 2009-06-03 | 2009-06-03 | Steam bleeding check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416674Y true CN201416674Y (en) | 2010-03-03 |
Family
ID=41793093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201216671U Expired - Fee Related CN201416674Y (en) | 2009-06-03 | 2009-06-03 | Steam bleeding check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201416674Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN102966768A (en) * | 2012-12-13 | 2013-03-13 | 云南省电子工业研究所 | Lever-type one-way non-return electromagnetic valve |
| CN106481851A (en) * | 2016-11-09 | 2017-03-08 | 嘉善永金金属制品有限公司 | A kind of closing organ using in Equipment for Heating Processing |
| CN110397769A (en) * | 2019-08-15 | 2019-11-01 | 黄洪刚 | A kind of swing check valve of protecting against shock |
-
2009
- 2009-06-03 CN CN2009201216671U patent/CN201416674Y/en not_active Expired - Fee Related
Cited By (7)
| 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 |
| CN102966768A (en) * | 2012-12-13 | 2013-03-13 | 云南省电子工业研究所 | Lever-type one-way non-return electromagnetic valve |
| CN106481851A (en) * | 2016-11-09 | 2017-03-08 | 嘉善永金金属制品有限公司 | A kind of closing organ using in Equipment for Heating Processing |
| CN110397769A (en) * | 2019-08-15 | 2019-11-01 | 黄洪刚 | A kind of swing check valve of protecting against shock |
| CN110397769B (en) * | 2019-08-15 | 2020-09-01 | 良工阀门集团有限公司 | Anti-impact swing check valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20180603 |