Product description
Sta high pressure bypass valve is to reduce steam: steam many condition requirements will be higher steam pressure and temperature parameters to a lower pressure and temperature parameters of industrial enterprises, to meet the requirements of different conditions. Such as electric power enterprise system with high pressure steam turbine bypass system, its role is when the unit at startup, the steam can't reheat boiler began to enter into the inner of reheater system, but through the high-pressure bypass system imported back to the boiler reheater to protect boiler, not exhaust to air and the resulting noise and cause the water loss. The same turbine failure can also be out of high pressure bypass system and the boiler to continue waiting for steam turbine troubleshooting immediately after put into normal operation. Therefore, the high-pressure bypass system is widely used in electric power, petroleum, chemical industry heat equipment or systems, increase the flexibility of unit start-up and stop, reduce the water loss, in line with the current energy-saving emission reduction policies; eliminates the exhaust steam into the air generated by the noise, also conforms to the requirements of environmental protection.
High pressure bypass valve structure: sta high pressure bypass valve working condition is very poor, are generally run in the throttle state, temperature stress is large, the throttle valve cavitation phenomenon serious, very easy to damage. Therefore, the design and manufacture of a high pressure bypass valve superior performance, cavitation resistance, high strength, low noise, simple and reliable structure is very important. Our company in view of the above conditions, the high pressure bypass valve structure design and material selection were optimized, and designed the bypass valve model. Its characteristic is a throttling element using a porous sleeve structure, constitute the throttling element and the valve core; decompression orifice plate arranged in the valve core; design of steam export scale of the mouth; desuperheating water from outside into the valve body, ejected through the porous tube, and high temperature steam is mixed directly to reduce the steam temperature; the structure, make the operation cavitation is reduced greatly, prolong the service life of the high pressure bypass valve; the valve seat is designed into a detachable structure, convenient assembly and disassembly, easy maintenance; the sealing surface of the valve seat by the inclined plane structure, reasonable design, adjust the door seal sealing up to good effect. HP bypass system suitable for 300, 600, 1000MW reheat steam turbine.
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