CN100387880C - Auxiliary shutter of check valve - Google Patents
Auxiliary shutter of check valve Download PDFInfo
- Publication number
- CN100387880C CN100387880C CNB200510030069XA CN200510030069A CN100387880C CN 100387880 C CN100387880 C CN 100387880C CN B200510030069X A CNB200510030069X A CN B200510030069XA CN 200510030069 A CN200510030069 A CN 200510030069A CN 100387880 C CN100387880 C CN 100387880C
- Authority
- CN
- China
- Prior art keywords
- close
- check valve
- piston rod
- assisted cylinder
- assisted
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- Check Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A check valve close-assisted device comprises a close-assisted cylinder with an oil inlet and an oil outlet, in which there is a piston mounted on the piston rod. The piston rod locates in the close-assisted cylinder and a spring is fixed at one end of the above piston. At one end of the piston rod extending from the above close-assisted cylinder is formed a guide groove and in the guide groove there is a guide pin. The guide pin is connected on a crank and the crank is connected with the butterfly board of the check valve via a shaft. There is also a support and a pin rotation mechanism is mounted on the support.
Description
Technical field
The present invention relates to a kind of auxiliary shutter of check valve device.
Background technique
Safety check generally is used for urgent non-return, in power station steam turbine pipe-line system, can close with interior second at 0.5-1 in the state of accident, prevents that the refluence of pipe-line system steam and condensed water from causing steam turbine to damage.It is tilting that butterfly plate adopts wide-angle in the existing safety check, can shorten the keying stroke like this, and have gas (liquid) pressure to help the pass, realizes quick closedown.
As depicted in figs. 1 and 2, existing safety check is connected with close-assisted device on butterfly plate, and this close-assisted device is arranged on outside the pipeline and perpendicular to pipeline.During proper functioning, gas in control system air feed (or water, the oil) device (or water, oil) enters and helps the cavity of resorption that closes cylinder 1, promotion helps pass cylinder piston 2 to move up, and pressure spring 3 also makes spring energy-storage, and butterfly plate 8 is opened (as shown in Figure 1) under the promotion of pipeline pressure medium.When system breaks down; butterfly plate 8 is closed under the effect of self gravitation; control system air feeder commutation this moment; gas is entered help pass cylinder 1 epicoele; promote to help the pass cylinder piston to move down with spring force, help simultaneously and close the discharge of cylinder cavity of resorption gas, help butterfly plate 8 to close (position as shown in Figure 2) with the fastest speed; to prevent that pipe-line system steam and condensed water from flowing backwards, capital equipments such as protection steam turbine.
Yet existing close-assisted device is generally all perpendicular to piping erection, and it is bigger to take up space like this, and owing to length on the vertical direction is bigger, and in helping the pass process, influence the stability of butterfly plate closing motion.
Summary of the invention
Given this, the object of the present invention is to provide a kind of auxiliary shutter of check valve device, this device can be parallel to piping erection, saves the space, and can make the butterfly plate closing motion stable.
For this reason, the invention provides a kind of auxiliary shutter of check valve device, comprise that one has the close-assisted cylinder of oil inlet and outlet, be combined with piston in the described close-assisted cylinder, described piston is installed on the piston rod, and described piston rod is positioned at described close-assisted cylinder and fixes a spring being equipped with on the end of described piston; Wherein, the end that described piston rod stretches out described close-assisted cylinder forms a guide groove, cooperates a guide finger, described guide finger to be connected on the crank in the described guide groove slidably, and described crank is connected with the butterfly plate of safety check by one; Also comprise a support, a pivot is installed on the support, and described support is connected with described pivot by the fulcrum on the described close-assisted cylinder.
Preferably, described support is mounted on tube wall and makes close-assisted cylinder be parallel to pipeline.
Description of drawings
Fig. 1 is that existing auxiliary shutter of check valve device is looked closely the partial cutaway diagrammatic sketch;
Fig. 2 is existing auxiliary shutter of check valve device side-looking cut-away view;
Fig. 3 is an auxiliary shutter of check valve device side-looking partial cutaway diagrammatic sketch of the present invention, and wherein butterfly plate is in closed condition, opens readiness but close-assisted device is in butterfly plate;
Fig. 4 is an auxiliary shutter of check valve device side-looking partial cutaway diagrammatic sketch of the present invention, and wherein butterfly plate is in half-open position;
Fig. 5 is an auxiliary shutter of check valve device side-looking partial cutaway diagrammatic sketch of the present invention, and wherein butterfly plate is in opening state;
Fig. 6 is an auxiliary shutter of check valve device side-looking partial cutaway diagrammatic sketch of the present invention, and wherein butterfly plate is in the quick closedown state.
Embodiment
As shown in Figure 3, auxiliary shutter of check valve device of the present invention comprises that one has the close-assisted cylinder 1 of importing and exporting A, be combined with piston 2 in this close-assisted cylinder, this piston 2 is installed on the piston rod 21, piston rod 21 is positioned at cylinder body and fixes a spring 3 on the end of piston 2 being equipped with, and the end that piston rod 21 stretches out cylinder body forms a guide groove 4, cooperates a guide finger 5 in the guide groove 4 slidably, this guide finger 5 is connected on the crank 6, and this crank 6 is connected with butterfly plate 8 by one 7.Auxiliary shutter of check valve device of the present invention also comprises a support 9, this support can be fixed on the tube wall, one pivot (not shown) is installed on the support, this pivot can be known pivot, support is connected with pivot by the fulcrum 10 on the close-assisted cylinder 1, and close-assisted cylinder can rotate around fulcrum 10 like this.This support is mounted on tube wall and makes close-assisted cylinder 1 be parallel to pipeline.
As shown in Figure 3, auxiliary shutter of check valve device of the present invention is ready, and promptly butterfly plate 8 is in the closed position, is full of fluid or gas in the cavity C of close-assisted cylinder 1 at this moment, and piston rod 21 is at the direction pushing spring 3 of arrow R, and spring 3 is in energy accumulating state.Simultaneously, guide finger 5 is in the high order end position of guide groove 4.
Referring to shown in Figure 4, when pipeline internal medium need pass through valve, medium is at first pushed butterfly plate 8 several angles open, at this moment, spring 3 is in energy accumulating state, crank 6 drives guide finger 5 and slides to the right in guide groove 4, thereby drives piston rod 21, close-assisted cylinder 1 around fulcrum 10 swings, and the invariant position of piston rod 21 in close-assisted cylinder 1.
Referring to shown in Figure 5, because the effect of pipeline internal medium, guide finger 5 further slides into low order end in guide groove 4 again, and piston rod 21, close-assisted cylinder 1 are further swung around fulcrum 10, and butterfly plate 8 is opened into fully open position.At this moment, spring 3 still is in energy accumulating state, and the position of piston rod 21 in close-assisted cylinder 1 is still constant.
Further referring to shown in Figure 6, when needs are closed pipeline, import and export the A emptying, spring 3 discharges compression can, promote piston rod 21 to left movement, the guide finger 5 that is positioned at piston rod 21 end guide grooves 4 low order ends along with guide groove 4 to left movement, thereby drive crank 6, close-assisted cylinder 1 swing, assist butterfly plate 8 quick closedown under the effect of gravity.
After butterfly plate 8 is closed rapidly, from importing and exporting the A oil-feed, promote piston 2 and move again, and drive piston rod 21 and move along arrow R direction, be positioned at the high order end of guide groove 4 until guide finger 5; At this moment, close-assisted device returns to armed state shown in Figure 3.
Adopt close-assisted device of the present invention can be parallel to piping erection, save valve body and take up space, close with breakdown action steady.
Claims (2)
1. auxiliary shutter of check valve device, comprise that one has the close-assisted cylinder (1) of oil inlet and outlet, be combined with piston (2) in the described close-assisted cylinder, described piston (2) is installed on the piston rod (21), and described piston rod (21) is positioned at described close-assisted cylinder and fixes a spring (3) on the end that described piston (2) is installed; It is characterized in that, the end that described piston rod (21) stretches out described close-assisted cylinder forms a guide groove (4), cooperate a guide finger (5) in the described guide groove (4) slidably, described guide finger (5) is connected on the crank (6), and described crank (6) is connected with the butterfly plate (8) of safety check by one (7); Also comprise a support (9), a pivot is installed on the support, and described support is connected with described pivot by the fulcrum (10) on the described close-assisted cylinder (1).
2. auxiliary shutter of check valve device as claimed in claim 1 is characterized in that, described support is mounted on tube wall and makes close-assisted cylinder (1) be parallel to pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510030069XA CN100387880C (en) | 2005-09-28 | 2005-09-28 | Auxiliary shutter of check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510030069XA CN100387880C (en) | 2005-09-28 | 2005-09-28 | Auxiliary shutter of check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1940364A CN1940364A (en) | 2007-04-04 |
| CN100387880C true CN100387880C (en) | 2008-05-14 |
Family
ID=37958782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510030069XA Expired - Fee Related CN100387880C (en) | 2005-09-28 | 2005-09-28 | Auxiliary shutter of check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100387880C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434690A (en) * | 2011-12-01 | 2012-05-02 | 辽宁能发伟业能源科技有限公司 | Opening-assisting method and opening-assisting device of check valve |
| CN106917907B (en) * | 2015-12-26 | 2019-10-11 | 中国石油天然气集团公司 | A kind of pneumatic actuator for one-way damper valve |
| TWI795905B (en) * | 2021-09-09 | 2023-03-11 | 新加坡商鴻運科股份有限公司 | Valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1402884A (en) * | 1972-08-03 | 1975-08-13 | Daytona Butterfly Valves Ltd | Butterfly valve actuating mechanism |
| JPS5828060A (en) * | 1981-08-08 | 1983-02-18 | Showa Valve Kogyo Kk | Composite butterfly check valve |
| CN86209336U (en) * | 1986-11-19 | 1987-11-07 | 杨树蔚 | Power-saving slowly closed non-retarn butterfly valve |
| CN2155482Y (en) * | 1993-04-15 | 1994-02-09 | 武汉水利电力大学 | Multi-functional self-pressing programmable valve |
| CN2436740Y (en) * | 2000-08-08 | 2001-06-27 | *** | Check valve for vapour pumping |
| US6434094B2 (en) * | 1995-07-27 | 2002-08-13 | Matsushita Electric Industrial Co., Ltd. | Optical disk apparatus |
| CN2700659Y (en) * | 2004-06-03 | 2005-05-18 | 安徽铜都阀门有限公司 | Micro-resistance slowly-closing check-valve |
| CN2708065Y (en) * | 2004-05-20 | 2005-07-06 | 武汉大禹阀门制造有限公司 | Hydraulic non-return hemisphere valve |
-
2005
- 2005-09-28 CN CNB200510030069XA patent/CN100387880C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1402884A (en) * | 1972-08-03 | 1975-08-13 | Daytona Butterfly Valves Ltd | Butterfly valve actuating mechanism |
| JPS5828060A (en) * | 1981-08-08 | 1983-02-18 | Showa Valve Kogyo Kk | Composite butterfly check valve |
| CN86209336U (en) * | 1986-11-19 | 1987-11-07 | 杨树蔚 | Power-saving slowly closed non-retarn butterfly valve |
| CN2155482Y (en) * | 1993-04-15 | 1994-02-09 | 武汉水利电力大学 | Multi-functional self-pressing programmable valve |
| US6434094B2 (en) * | 1995-07-27 | 2002-08-13 | Matsushita Electric Industrial Co., Ltd. | Optical disk apparatus |
| CN2436740Y (en) * | 2000-08-08 | 2001-06-27 | *** | Check valve for vapour pumping |
| CN2708065Y (en) * | 2004-05-20 | 2005-07-06 | 武汉大禹阀门制造有限公司 | Hydraulic non-return hemisphere valve |
| CN2700659Y (en) * | 2004-06-03 | 2005-05-18 | 安徽铜都阀门有限公司 | Micro-resistance slowly-closing check-valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1940364A (en) | 2007-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGNAN VALVES CO., LTD. Free format text: FORMER OWNER: HUANG ZUOXING Effective date: 20081114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081114 Address after: No. 616, Airport Avenue, Wenzhou, Zhejiang Patentee after: Jiangnan Valve Co., Ltd. Address before: No. 616, Airport Avenue, Wenzhou, Zhejiang Patentee before: Huang Zuoxing |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20170928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |