Diverter Damper For Combined Cycle
Diverter damper is usually applied to CCPP(Combined Cycle gas turbine Power Plant) Diverter damper’s purpose is to divert the flow direction in either HRSG or Bypass stack.
Diverter damper are primarily used in gas turbine applications with heat recovery steam generators (HRSG). A diverter damper is designed with one inlet and two outlets. The outlets are normally at right angles from each other. The blade pivots from one end rotating 90 degrees to close off one of the two outlets. This system always allows for an escape route for the flue gas, therefore protecting any upstream equipment from bottlenecking the turbine. Diverters can be supplied in a low leak or zero leak application. They are perfect for clean applications that require low-pressure drop and good isolation.
The diverter damper is a change valve with one entrance and two exits; the designed diverter damper is installed horizontally, which can facilitate the flue gas to flow into the HRSG horizontally or go into the bypass stack vertically; however the two exits of the diverter damper can’t be closed concurrently so as to ensure the combustor to run safely.
The equipment adopts the single-axis doubling piece hydraulic driver.
For power plants, the combined cycle has the following advantages
High efficiency, low heat consumption, easy to co-supply of heat and power, fast construction speed, low cost per KW ;
Disadvantages: high consumption of natural gas, higher generation cost than traditional coal power, high maintenance cost;
Waste heat utilization improves overall efficiency, generally no combustion, low parameters, no tube detonation oxide scale and other problems, small floor space, fast construction speed, no need to install desulfurization facilities, simple system.
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