CN103267162A - 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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- CN103267162A CN103267162A CN2013101954135A CN201310195413A CN103267162A CN 103267162 A CN103267162 A CN 103267162A CN 2013101954135 A CN2013101954135 A CN 2013101954135A CN 201310195413 A CN201310195413 A CN 201310195413A CN 103267162 A CN103267162 A CN 103267162A
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- hydraulic control
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- valve
- rapidly
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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 quick closing valve butterfly valve.The present invention is applicable to the hydraulic control unit of hydroelectric system ultra supercritical power generator turbine outlet quick closing valve butterfly valve.
Background technique
Steam turbine outlet at hydroelectric system; medium refluence damage equipment when preventing halt turbines; generally in its outlet the quick closing valve butterfly valve is installed; its exit butterfly valve of quick closedown when halt turbines; when butterfly valve is closed to 10% left and right sides aperture; slowly close, prevent that medium from flowing backwards and water hammer damages steam turbine.Be the quick closing valve butterfly valve hydraulic spring drive apparatus of ZL200420054336.8 as the patent No., 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 fixedlyed connected with valve shaft, and connecting rod and the piston rod of connecting rod are hinged.Make the crank amplitude of oscillation bigger, thereby it is bigger to make valve shaft change the width of cloth, is applied in the heavy caliber quick closing valve butterfly valve.Its major defect is that the fluid pressure drive device output torque is little, drives valve, to close valve speed regulation range little, and velocity control accuracy is poor.
Summary of the invention
The objective of the invention is the shortcoming that exists at prior art, provide a kind of output torque big, drive valve, to close valve speed regulation range big, open valve speed and close the control of valve speed to be easy to ultra supercritical quick closing valve butterfly valve 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 fixedlyed connected with an end of piston rod, the rodless cavity of piston is communicated with the control oil circuit of hydraulic control, the other end that mainly is 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 control oil circuit of hydraulic control, at the quick closing valve passage with close slowly and the quick closing valve modulating valve is installed respectively on the passage and is closed modulating valve slowly, the quick closing valve passage is provided with adjusting screw rod.
In above technological scheme, at the center of adjusting screw rod the through hole that is communicated with piston rodless cavity and quick closing valve passage is set, an end periphery of adjusting screw rod cooperates with the center hole motive sealing on the piston rod.
In above technological scheme, between the rodless cavity of piston and hydraulic control, be shaped on fast open walk, this fast open walk is made up of one-way valve passage between piston rodless cavity and the 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 the quick closing valve modulating valve is installed respectively on the passage and is closed modulating valve slowly, the quick closing valve passage is provided with adjusting screw rod, reach the adjusting of splitting valve speed and closing valve speed by regulating the quick closing valve modulating valve and closing modulating valve slowly, and by adjusting the position of adjusting screw rod, change adjusting screw rod center hole and piston rodless cavity intercommunicating pore with respect to the distance of piston rod, realize that butterfly valve closes the adjustment of angle slowly.Its output torque is big, and quick closing valve and to close the speed adjustment range slowly big closes angle adjustment precisely, easily slowly.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Ultra supercritical quick closing valve butterfly valve 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 fixedlyed connected with an end of piston rod 3, piston 5 excircles cooperate with cylinder body 4 inwall motive sealings, and the rodless cavity of piston 5 is communicated with the control oil circuit 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 bigger output torque.The rodless cavity of piston 5 closes passage slowly by a quick closing valve passage and and is communicated with the control oil circuit of hydraulic control, at the quick closing valve passage with close slowly and quick closing valve modulating valve 8 is installed respectively on the passage and is closed modulating valve 9 slowly, by regulating quick closing valve modulating valve 8 and closing modulating valve 9 slowly, the speed of can the regulating valve quick closing valve and closing slowly, the quick closing valve passage is provided with adjusting screw rod 6, be used for regulating valve from quick closing valve to the transition point that closes slowly.
The through hole that is communicated with piston 5 rodless cavities and quick closing valve passage is set at the center of adjusting screw rod 6, i.e. an 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 bores can be communicated with piston 5 rodless cavities by its radial hole.One end periphery of adjusting screw rod 6 cooperates with the center hole motive sealing on the piston rod 3, and when the radial hole of adjusting screw rod 6 during by piston rod 3 cappings, the quick closing valve passage is cut off.
Between the rodless cavity of piston 5 and hydraulic control, be shaped on fast open walk, this fast open walk is made up of one-way valve passage between piston 5 rodless cavities and the hydraulic control, the import of one-way valve 7 is communicated with piston 5 rodless cavities, outlet is communicated with the control oil circuit of hydraulic control, in the valve opening process, one-way valve 7 is opened, and in the valve closing process, one-way valve 7 is closed.
At cylinder body 4 sealed at both ends fixed installation front end housing 2 and back cylinder covers 10, adjusting screw rod 6, one-way valve 7, quick closing valve passage, close passage slowly and be arranged on the back cylinder cover 10, the control oil circuit of hydraulic control is connected on the interface of back cylinder cover 10, the structure of hydraulic control is known technology, no longer is described in detail at this.
Claims (3)
1. ultra supercritical quick closing valve butterfly valve 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 fixedlyed connected with an end of piston rod (3), the rodless cavity of piston (5) is communicated with the control oil circuit of hydraulic control, the other end that it is characterized in that 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 control oil circuit of hydraulic control, at the quick closing valve passage with close slowly and quick closing valve modulating valve (8) is installed respectively on the passage and is closed modulating valve (9) slowly, the quick closing valve passage is provided with adjusting screw rod (6).
2. ultra supercritical quick closing valve butterfly valve hydraulic control unit according to claim 1, it is characterized in that arranging at the center of adjusting screw rod (6) through hole that is communicated with piston (5) rodless cavity and quick closing valve passage, an end periphery of adjusting screw rod (6) cooperates with center hole motive sealing on the piston rod (3).
3. ultra supercritical quick closing valve butterfly valve hydraulic control unit according to claim 1 and 2, it is characterized in that being shaped on fast open walk between the rodless cavity of piston (5) and hydraulic control, this fast open walk is made up of one-way valve passage between piston (5) rodless cavity and the hydraulic control.
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 |
|---|---|
| CN103267162A true CN103267162A (en) | 2013-08-28 |
| CN103267162B CN103267162B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| Publication number | Publication date |
|---|---|
| CN103267162B (en) | 2015-05-20 |
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