Sunday, September 2, 2012

Pressure Reducing And De-superheating System(PRDS)


Combined angle type pressure reducing and desuperheating station
These are suitable for High pressure Turbine bypass and HP / LP bypass applications. The same with various sizes, material and pressure class is also offered. This ensures required pressure and temperature drop.

• As this system itself acts as bypass system for turbine, no bypass is required for this system again.
• If condensers are equipped with safety devices like rupture discs then no extra safety devices like safety valves are necessary.

Requirements of Turbine Bypass System:
• Protection of Condenser against excessive Pressure & Temperature.
• Partial Bypass to maintain steady upstream pressure when Turbine runs back to house load.
• Efficient matching of steam & turbine metal temperatures during cold, warm & hot start up cycles.
• To prevent boiler pressure fluctuations in case of Turbine trip or load rejection.
• To avoid the lifting of HP safety relief valve & condensate loss.
• Cooling of final super-heating in case of falling pressure application.
• Controlled pressure build up during start up operation or in the event of Turbine Trip.

• Angle type Combined PRDS valves with various stages on pressure and temperature reduction.
• Customized designs to accommodate complete performance needs.
• Tailor made multi stage Trims for Dynamic noise control.
• Cast / Forged body selection available.
• End connections to meet existing piping sizes & materials.
• Bolted Bonnets for easy serviceability.
• Trim removable thru’ bonnet, In Line.
• Installation in any orientation.
• Shut off in accordance with ANSI / FCI 70.2, Class V.
• Dump Tubes can be designed & supplied on request
• Suitable for Feed-forward as well as conventional control strategies

1 comment:

plumbing said...

The plumbing system in your home sometimes requires a lower level of water pressure and pressure reducing valves offer you the ability to custom set this level of pressure. Nevertheless, you may eventually notice that the water pressure in your home has changed and you must therefore check the efficacy of your pressure reducing valve. With the right tools, this can be done in a matter of minutes.