Hydropower station of gravity stress condition and there is a difference between ordinary senior reduced pressure water supply conditions, not to generalize relief valve selection.

xiangjiaba hydropower station, using ZJY46H piston type pressure reducing valve, since 2012 has been stable operation 6 years

artesian pressure water supply of hydropower station, the object of the technical water supply system for generator on the guide bearing oil cooler, generators, thrust bearing oil cooler, air cooler water turbine guide bearing oil cooler. Hydropower unit technology in water supply cooling water to have a vital role to the safe operation of power plant unit, cooling water is not normal operation, will cause the temperature rise, alarm, and even outage.

so, for hydropower station with the pressure reducing valve, the stability of the first to have longevity, the shelf life is only a year two years of general diaphragm type pressure reducing valve is installed in this important area, once the failure occurs during operation, cause the machine stop, will bring huge losses. Should choose durable enough, and can automatically according to the variation of upstream pressure setting outlet pressure of the piston type pressure reducing valve.

second should have a perfect security. For machinery and equipment, the failure is inevitable, once the technical water supply system pressure reducing valve failure happens, must want to have a locking system can quickly lock valve outlet pressure, avoid destructive damage to high-pressure water into the unit.

after, because a lot of impact turbine power station site location is not very ideal, the water quality is not very good, when impurities into the pressure reducing valve jam, to cause a decline in export pressure, cooling water into the unit not taking enough heat to high temperature alarm. So the discharge of pollutants by hydropower station must also want to have a set of can recoil device can be applied on the sediment content of large hydropower station.

for the normal operation of hydropower station is so required by the pressure reducing Industrial Valves, must balance the stability, safety, and adequate water quality adaptability, and the normal pressure reducing Industrial Valves is a big difference.

big several hydropower station at home, such as: natural arch hydropower station ( 220 m head) ; Xiangjiaba hydropower station; Goupitan hydropower station ( 200 m head) And treasure temple the technical water supply system for hydropower station to see their chosen is ZJY46H combined pressure reducing valve, should be a fairly mature product.

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