Hydropower station special inlet ball valve

source：Xiamen, rhett fluid control co., LTD The information has been viewed： 4176 Time：2013-07-03 20:25:14


Widely used in high head hydropower station. When working, matched with a hydraulic machine valve, in accordance with the principle of hydraulic transition process, through the design of the opening and closing process, effectively eliminate the pipeline water hammer, the realization of pipeline reliable cut-off, to protect the safety of pipeline system.
Product features:
This series of valves, high intelligent degree, complete function, stable and reliable performance, and the flow resistance coefficient is extremely small,
The flow resistance coefficient and pipeline with the same wide-open.
■ electric control system adopts PLC intelligent control, the electrical circuit is greatly simplified, has strong fault self diagnosis function. Local, remote control, the central control room and the turbine control, high degree of automation, safe and reliable, power station "less people on duty and unattended" management philosophy;
■ liquid control system adopts a weight or reservoir storage, when power hydropower station without power supply, hammer or accumulator energy release, can implement emergency dynamic water closing valve, provide enough security for the safe operation of unit;
■ applicable range of water head, the maximum can reach 1000 m water head;
■ small fluid resistance, the ball valve fluid resistance all the valves in a minimal, even reduced diameter valve, the fluid resistance is quite small.
■ switch quickly and easily, as long as the valve stem rotates 90 DEG, ball valve is completed fully open or fully closed action, it is easy to achieve rapid opening and closing.
■ good sealing performance. Ball valve with double seal design, namely the "inspection seal", the downstream side provided with "seal", easy to ensure the seal, and the valve sealing force as the medium increases with increasing pressure, water leakage is very small.
Reliable stem sealing. The ball valve is opened or closed only when the valve stem rotates, so the stem packing seal is not easy to be damaged, and the stem was the seal force increases with the medium pressure.
Technical information:
Nominal pressure: 1 ~ 4.0MPa
Nominal size: DN50 ~ 1000
Opening and closing time: user requirements (adjustable)
Suitable medium: water
Sealing form: soft seal, seal
Valve form: jacket type, side mounted
The power: energy storage type, hammer
Body material: cast iron, cast steel