Hydraulic device of water turbine speed governing and protection system
A technology of hydraulic device and protection system, applied in the field of hydraulic device, can solve the problems of large oil demand, large valve body size, difficult quality control, etc., to achieve the effect of improving adjustment quality, reliable operation and saving space
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[0034] Such as Figure 1-9 As shown, the present invention is a hydraulic device for a hydraulic turbine speed control and protection system, including a guide vane control valve group 2 and a vane control valve group 3 connected to a pressure oil source P, a guide vane control valve group 2 and a vane control The valve group 3 is respectively connected to the guide vane servomotor SM001 and the vane servomotor SM101. The innovation of the hydraulic device of the water turbine speed control and protection system of the present invention is that it also includes an accident shutdown circuit and a shutdown control valve group. The accident shutdown circuit is connected in series between the guide vane control valve group 2 and the guide vane servomotor SM001. The shutdown control valve group includes the pure mechanical hydraulic over-speed protection device PD201 and the emergency / accident shutdown hydraulic control valve group 4. The pure mechanical hydraulic overspeed protec...
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