Control Valve for power plant industries:-
Now this control valve is widely used in oil, gas, and power industry Control Valves can be used to modulate flow, but some work better than others .Diaphragm valves work well to throttle flow .Proportional solenoid valves are economical .Reciprocating globe valves, are rugged, expensive, and very accurate (<2% accuracy).
Parts Features of control valve
- Easily Replaced disc
The design of the disc maintains equivalent pressure around the stem to decrease vibration and prevent other potential problems.
- Anti-cavitation Trim
When the pressure fluctuates around the saturation vapor pressure of the fluid and then suddenly increases, the fluid will be compressed and the cavitation will follow which leads to noise and vibration. Multi-labyrinth and multi-turn Disc design is used to eliminate cavitations’.
- Low Noise
Compressible fluid at high pressures and velocities in the system results in noise and vibration and use of multi-labyrinth and multi-turn discs reduce noise and vibrato Easily Changed Flow Capacity and Characteristics of control valves Flow capacities and characteristics are changed through the use of sleeve changes.
- Acid Gas / Corrosive Fluid
Multi-choice of material of body and trim enable control valves to be used on acid gas and corrosive fluid, in accordance with the technical requirements of National Association of Corrosion Engineers (NACE).
- Simple Maintenance of control valve
Top entry design allows simple replacement of seat and seat sleeve ring.
Application of control valve :
- Main feed water pipeline
- Heat supply pipeline to heating steam
- Primary desalt system
- Secondary desalt system
- Main condensate pipe
- Deaerator water level (Primary)
- Deaerator water level (Secondary)
- Condensation water drain to storage water tank
- Condensation water drain to high pressure heater emergent drain flash tank
- Low pressure heater drain pump outlet
- Condensate pump minimum flow
- Turbine oil cooler backwater
CONTROL VALVE GENERALLY INSTALLED IN FOLLOWING PLACES IN POWER PLANT
-Generator hydrogen cooler backwater
-Auxiliary steam to condenser
-Auxiliary steam to low pressure cylinder steam cooler
-Auxiliary steam to air pre-heater steam
-Auxiliary steam to steam converter valve
-Boiler continuous blow down
-Condenser water supplement flow
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