Ultra-supercritical rapidly-closed butterfly valve hydraulic control device
An ultra-supercritical and butterfly valve fluid technology, applied in the direction of valve devices, valve operation/release devices, valve details, etc., can solve the problem of small output torque of hydraulic drive devices, poor speed control accuracy, valve opening and closing speed adjustment range Small and other problems, to achieve the effect of precise adjustment, large adjustment range and large output torque
Active Publication Date: 2015-05-20
ZHEJIANG JINGJIA VALVE
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Problems solved by technology
Its main disadvantages are that the output torque of the hydraulic drive device is small, the valve opening and closing speed adjustment range is small, and the speed control accuracy is poor.
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[0009] like figure 1 The shown ultra-supercritical quick-closing butterfly valve hydraulic control device includes a cylinder mechanism and a hydraulic control mechanism. The cylinder mechanism includes a cylinder body 4, a piston 5, and a piston rod 3. The piston 5 is fixedly connected to one end of the piston rod 3. The outer circumference of the piston 5 It cooperates with the inner wall of the cylinder body 4 for dynamic sealing, the rodless chamber of the piston 5 communicates with the control oil circuit of the hydraulic control mechanism, the other end of the piston rod 3 is connected to the valve shaft through a rocker arm, and the piston rod 3 is connected to the The valve shaft is hinged so that the piston rod 3 has a relatively large output torque. The rodless cavity of the piston 5 communicates with the control oil circuit of the hydraulic control mechanism through a fast closing channel and a slow closing channel, and a fast closing regulating valve 8 and a slow c...
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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 [0001] The invention relates to a valve control device, in particular to a control device for a fast-closing butterfly valve. The invention is suitable for a hydraulic control device of a quick-closing butterfly valve at the outlet of an ultra-supercritical unit steam turbine in a water conservancy power generation system. Background technique [0002] At the steam turbine outlet of the hydroelectric power generation system, in order to prevent the medium from backflowing and damaging the equipment when the steam turbine is shut down, a quick-closing butterfly valve is generally installed at the outlet, and the outlet butterfly valve is quickly closed when the steam turbine is shut down, and slowly closed when the butterfly valve is closed to about 10%. , Prevent medium backflow and water hammer from damaging the steam turbine. For example, the hydraulic spring driving device for quick-closing butterfly valve with patent No. ZL200420054336.8 includes an oil ...
Claims
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IPC IPC(8): F16K31/122
Inventor 韩孝义金宗朝
Owner ZHEJIANG JINGJIA VALVE