Diverter Damper In HRSG

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 operating part of the diverter damper is the damper; when the exhaust gas goes into the flue of the flue gas bypass system, the following actions shall be achieved:

The damper is opened fully（90°）, where the exhaust gas goes into the exhaust heat boiler directly (the machine unit is under the combined cycle).

The damper is closed fully (0°), where the exhaust gas goes into the bypass stack and is discharged into air (single cycle).

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