Hydraulic Control Gate Valve for Water Turbine Inlet

Nominal diameter: DN400~DN2500
Nominal pressure: PN2.5~PN40
Applicable media: reservoir water, river water, sediment water, seawater, etc
Medium temperature: ≤ 300 ℃
Valve opening time: 20~120 seconds (adjustable)
Valve closing time: 20~120 seconds (adjustable)
Power supply: AC380V, AC460V, etc
Control power supply: AC220V, DC220V, DC110V or DC24V, etc
Remote control: valve opening, valve closing, emergency stop, etc
Remote signal: passive switch signal, 4-20mA analog valve position feedback signal
Characteristics of water turbine inlet gate valve:
1. The electrical control system adopts PLC intelligent control, which greatly simplifies the electrical circuit and has strong fault self diagnosis function.
It can be locally and remotely controlled, controlled by the central control room and linked with the water turbine, with a high degree of automation, safety and reliability, achieving the goal of "few people on duty and no one at all" in the power station
The management philosophy of "human responsibility";
2. The hydraulic control system uses heavy hammers or energy storage devices to store energy. When the hydropower station loses power and there is no power supply, the heavy hammers or energy storage devices release energy, which can achieve emergency water flow to close the gate valve,
Provide sufficient safety for the safe operation of the unit;
3. The electrical control box can be installed as a whole with the hydraulic station or arranged separately, depending on the site conditions;
4. The sealing surface of the main valve is a hard alloy double-sided sealing structure, which can be easily opened and closed and reliably sealed on the hydraulic control actuator developed by Shanghai Fuyao;
Make the valve have good self closing and self sealing performance. The large diameter gate structure has small displacement, smooth water flow, and a valve flow resistance coefficient of only 0.15-0.8,
Far smaller than the flow resistance coefficient of the check valve (1.7-2.6), the energy-saving effect is significant.
5. The valve body is cast as a whole, with high strength and good sealing performance;
6. The bypass pipeline is equipped with manual maintenance valves, expansion joints, and electric valves, among which the electric valve can be replaced by a hydraulic control valve and linked with the main valve for control.
7. Air valves and drain valves can be installed on downstream connecting pipes, depending on customer and site requirements.