CN103267162B - Ultra-supercritical rapidly-closed butterfly valve hydraulic control device - Google Patents
Ultra-supercritical rapidly-closed butterfly valve hydraulic control device Download PDFInfo
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- CN103267162B CN103267162B CN201310195413.5A CN201310195413A CN103267162B CN 103267162 B CN103267162 B CN 103267162B CN 201310195413 A CN201310195413 A CN 201310195413A CN 103267162 B CN103267162 B CN 103267162B
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Abstract
The invention relates to an ultra-supercritical rapidly-closed butterfly valve hydraulic control device. The ultra-supercritical rapidly-closed butterfly valve hydraulic control device comprises an oil cylinder mechanism and a hydraulic control mechanism, wherein the oil cylinder mechanism comprises a cylinder body, a piston and a piston rod. The piston is fixedly connected with one end of the piston rod, a rodless cavity of the piston is communicated with a control oil circuit of the hydraulic control mechanism, mainly, the other end of the piston rod is connected with a valve shaft through a rocker arm, the rodless cavity of the piston is communicated with the control oil circuit of the hydraulic control mechanism through a rapidly-closed channel and a slowly-closed channel, a rapidly-closed regulating valve and a slowly-closed regulating valve are installed on the rapidly-closed channel and the slowly-closed channel respectively, and an adjusting threaded rod is arranged on the rapidly-closed channel. The ultra-supercritical rapidly-closed butterfly valve hydraulic control device has the advantages that output torque is large, the rapidly-closed speed adjusting range and the slowly-closed speed adjusting range are large, slowly-closed angle adjustment is accurate and easy and the like, and the ultra-supercritical rapidly-closed butterfly valve hydraulic control device is applicable to a rapidly-closed butterfly valve of an outlet of a steam turbine of an ultra-supercritical unit of a hydroelectric generation system.
Description
Technical field
The present invention relates to valve control device, particularly about the control gear of rapid cut-off butterfly valves.The present invention is applicable to the hydraulic control unit of hydroelectric system extra-supercritical unit steam turbine outlet rapid cut-off butterfly valves.
Background technique
Export at the steam turbine of hydroelectric system; medium refluence damage equipment during in order to prevent halt turbines; generally in its outlet, rapid cut-off butterfly valves is installed; its exit butterfly valve of quick closedown when halt turbines; when butterfly valve is closed to about 10% aperture; slowly closing, prevents medium from flowing backwards and water hammer damage steam turbine.As the rapid cut-off butterfly valves hydraulic spring drive apparatus that the patent No. is ZL200420054336.8, comprise oil cylinder, spring, the bindiny mechanism of the piston rod of spring seat and connection valve shaft and oil cylinder, described bindiny mechanism is connecting rod, the crank of connecting rod is fixedly connected with valve shaft, and connecting rod and the piston rod of connecting rod are hinged.Make the crank amplitude of oscillation larger, thus it is larger to make valve shaft turn width, is applied in heavy caliber rapid cut-off butterfly valves.Its major defect is that fluid pressure drive device output torque is little, and valve opening, pass valve speed regulation range are little, and velocity control accuracy is poor.
Summary of the invention
The object of the invention is the shortcoming for prior art existence, provide a kind of output torque large, valve opening, pass valve speed regulation range are large, and Valve opening velocity and pass valve speeds control are easy to ultra supercritical rapid cut-off butterfly valves hydraulic control unit.
Technological scheme of the present invention comprises oil cylinder mechanism and hydraulic control, oil cylinder mechanism comprises cylinder body, piston, piston rod, piston is fixedly connected with one end of piston rod, the rodless cavity of piston is communicated with the oil circuit control of hydraulic control, mainly the other end of piston rod is connected with valve shaft by a rocking arm, the rodless cavity of piston closes passage slowly by a quick closing valve passage and and is communicated with the oil circuit control of hydraulic control, install quick closing valve modulating valve respectively at quick closing valve passage and slow closing on passage and close modulating valve slowly, quick closing valve passage is provided with adjusting screw rod.
In above technological scheme, arrange the through hole being communicated with piston rodless cavity and quick closing valve passage at the center of adjusting screw rod, one end periphery of adjusting screw rod coordinates with the center hole motive sealing on piston rod.
In above technological scheme, between the rodless cavity and hydraulic control of piston, be shaped with fast open walk, this fast open walk is made up of way valve passageway between piston rodless cavity and hydraulic control.
Advantage of the present invention is that piston rod is connected with valve shaft by rocking arm, quick closing valve passage between piston rodless cavity and hydraulic control and close slowly and passage install respectively quick closing valve modulating valve and close modulating valve slowly, quick closing valve passage is provided with adjusting screw rod, reach Valve opening velocity and the adjustment of closing valve speed by regulating quick closing valve modulating valve and the slow modulating valve that closes, and by adjusting the position of adjusting screw rod, change adjusting screw rod center hole and piston rodless cavity intercommunicating pore, relative to the distance of piston rod, realize the adjustment that butterfly valve closes angle slowly.Its output torque is large, and greatly, slow angle adjustment of closing is accurate, easy for quick closing valve and slowly pass speed adjustment range.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Ultra supercritical rapid cut-off butterfly valves hydraulic control unit as shown in Figure 1, comprise oil cylinder mechanism and hydraulic control, oil cylinder mechanism comprises cylinder body 4, piston 5, piston rod 3, piston 5 is fixedly connected with one end of piston rod 3, piston 5 excircle coordinates with the motive sealing of cylinder body 4 inwall, and the rodless cavity of piston 5 is communicated with the oil circuit control of hydraulic control, and the other end of piston rod 3 is connected with valve shaft by a rocking arm, piston rod 3 is hinged with valve shaft by one hinged 1, makes piston rod 3 have larger output torque.The rodless cavity of piston 5 closes passage slowly by a quick closing valve passage and and is communicated with the oil circuit control of hydraulic control, quick closing valve passage and slow pass passage install quick closing valve modulating valve 8 respectively and closes modulating valve 9 slowly, by regulating quick closing valve modulating valve 8 and slow pass modulating valve 9, can regulating valve quick closing valve and slow speed of closing, quick closing valve passage is provided with adjusting screw rod 6, is used for regulating valve from quick closing valve to the slow transition point closed.
The through hole being communicated with piston 5 rodless cavity and quick closing valve passage is set at the center of adjusting screw rod 6, i.e. one end of this through hole and quick closing valve channel connection, the other end is communicated with the rodless cavity of piston 5, and adjusting screw rod 6 central through bore can be communicated with piston 5 rodless cavity by its radial hole.One end periphery of adjusting screw rod 6 coordinates with the center hole motive sealing on piston rod 3, and when the radial hole of adjusting screw rod 6 is by piston rod 3 capping, quick closing valve passage is cut off.
Fast open walk is shaped with between the rodless cavity and hydraulic control of piston 5, this fast open walk is made up of way valve passageway between piston 5 rodless cavity and hydraulic control, the import of one-way valve 7 is communicated with piston 5 rodless cavity, outlet is communicated with the oil circuit control of hydraulic control, in valve opening process, one-way valve 7 is opened, and in valve closing process, one-way valve 7 is closed.
At cylinder body 4 two ends sealing fixed installation front end housing 2 and back cylinder cover 10, adjusting screw rod 6, one-way valve 7, quick closing valve passage, the slow channel setting that closes are on back cylinder cover 10, the oil circuit control of hydraulic control is connected on the interface of back cylinder cover 10, the structure of hydraulic control is known technology, no longer describes in detail at this.
Claims (3)
1. a ultra supercritical rapid cut-off butterfly valves hydraulic control unit, comprise oil cylinder mechanism and hydraulic control, oil cylinder mechanism comprises cylinder body (4), piston (5), piston rod (3), piston (5) is fixedly connected with one end of piston rod (3), the rodless cavity of piston (5) is communicated with the oil circuit control of hydraulic control, it is characterized in that the other end of piston rod (3) is connected with valve shaft by a rocking arm, the rodless cavity of piston (5) closes passage slowly by a quick closing valve passage and and is communicated with the oil circuit control of hydraulic control, quick closing valve passage is installed quick closing valve modulating valve (8), slow pass passage is installed and closes modulating valve (9) slowly, quick closing valve passage is provided with adjusting screw rod (6).
2. ultra supercritical rapid cut-off butterfly valves hydraulic control unit according to claim 1, it is characterized in that arranging the through hole being communicated with piston (5) rodless cavity and quick closing valve passage at the center of adjusting screw rod (6), one end periphery of adjusting screw rod (6) coordinates with the center hole motive sealing on piston rod (3).
3. ultra supercritical rapid cut-off butterfly valves hydraulic control unit according to claim 1 and 2, it is characterized in that being shaped with fast open walk between the rodless cavity and hydraulic control of piston (5), this fast open walk by piston (5) between rodless cavity and hydraulic control way valve passageway form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195413.5A CN103267162B (en) | 2013-05-09 | 2013-05-09 | Ultra-supercritical rapidly-closed butterfly valve hydraulic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195413.5A CN103267162B (en) | 2013-05-09 | 2013-05-09 | Ultra-supercritical rapidly-closed butterfly valve hydraulic control device |
Publications (2)
| Publication Number | Publication Date |
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| CN103267162A CN103267162A (en) | 2013-08-28 |
| CN103267162B true CN103267162B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310195413.5A Active CN103267162B (en) | 2013-05-09 | 2013-05-09 | Ultra-supercritical rapidly-closed butterfly valve hydraulic control device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0961192A2 (en) * | 1998-05-28 | 1999-12-01 | Weber-Hydraulik GmbH | Actuating device |
| DE10233669A1 (en) * | 2002-07-24 | 2004-02-12 | Btm (Europe) Blechverbindungstechnik Gmbh | hydraulic cylinders |
| JP2007170639A (en) * | 2005-12-26 | 2007-07-05 | Kitz Corp | Pneumatic actuator for valve |
| CN201531484U (en) * | 2009-11-05 | 2010-07-21 | 浙江正洲泵阀制造有限公司 | Rack type part rotary valve hydraulic transmission device |
| CN201902387U (en) * | 2010-12-28 | 2011-07-20 | 邵阳维克液压股份有限公司 | Hydraulic cylinder with hydraulic control butterfly valve |
| CN203240066U (en) * | 2013-05-09 | 2013-10-16 | 浙江精嘉阀门有限公司 | Ultra-supercritical quick-closing butterfly valve hydraulic-control device |
-
2013
- 2013-05-09 CN CN201310195413.5A patent/CN103267162B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0961192A2 (en) * | 1998-05-28 | 1999-12-01 | Weber-Hydraulik GmbH | Actuating device |
| DE10233669A1 (en) * | 2002-07-24 | 2004-02-12 | Btm (Europe) Blechverbindungstechnik Gmbh | hydraulic cylinders |
| JP2007170639A (en) * | 2005-12-26 | 2007-07-05 | Kitz Corp | Pneumatic actuator for valve |
| CN201531484U (en) * | 2009-11-05 | 2010-07-21 | 浙江正洲泵阀制造有限公司 | Rack type part rotary valve hydraulic transmission device |
| CN201902387U (en) * | 2010-12-28 | 2011-07-20 | 邵阳维克液压股份有限公司 | Hydraulic cylinder with hydraulic control butterfly valve |
| CN203240066U (en) * | 2013-05-09 | 2013-10-16 | 浙江精嘉阀门有限公司 | Ultra-supercritical quick-closing butterfly valve hydraulic-control device |
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| CN103267162A (en) | 2013-08-28 |
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