Hydraulic system And control technology has the advantages of large power volume ratio, smooth transmission, convenient speed regulation, easy to realize automatic control and remote control,
It has been well applied and promoted in water conservancy and hydropower equipment, mainly including:
(1) Gate Hoist : Hydraulic cylinders are used to drive various hydraulic gates for opening and closing operations, such as the intake gate of the power station, the spillway discharge gate, and the navigation gate of the ship lock Hydraulic hoist Etc;
(2) Ship lift: in addition to using hydraulic cylinder to open and close the horizontal door of the ship bearing box, it is also connected with the ship bearing box and lifting wire rope to balance the force on each wire rope and maintain the horizontal lifting of the ship bearing box;
(3) Hydraulic turbine governor: through the control function of the hydraulic servo system in the speed regulating device, the hydraulic cylinder is used to drive the water guide mechanism of the hydraulic turbine to adjust the speed of the hydraulic turbine.
Case description:
Hydraulic turbine governor, including impulse turbine governor and mixed flow governor
Service pressure: 10Mpa Flow: 5.8L/min
water conservancy Hydraulic system characteristic:
1. In the design of the hydraulic oil circuit, in addition to meeting the basic function of speed regulation, the installation position of the valve, the oil filter and the overflow valve has been carefully designed.
2. Small power motor and small flow pump are selected, but high pressure accumulator is used to meet the condition that the governor has a small adjustment amount and flow under normal conditions (normal power generation), but large pressure and flow under emergency stop or load shedding.
3. At the same time, the large capacity configuration of the accumulator can meet the special requirements of black start and black close in the hydropower industry.
