Stack Damper
Stack dampers are commonly used in a wide range of gas turbine power plant applications.
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Function:
- Stack shut-off
- Rain water protection and drainage
Advantages:
- Prevents cooling down of boilers during short shut down phases
- Overpressure relief in case of process upsets
- Short delivery times
Used in:
- HRSG stacks
- Bypass or exhaust stacks
Standard:
- The 2-blade damper version has been completely standardised for round stacks in combined cycle gas turbine plants.
- Actuator electrically driven
- External Insulation
- External limit switches to monitor blade position
Other versions:
- 4-blade design
- Square or rectangular stack damper
- Internally insulated stack dampers
Parameters:
| Size: | up to 65 m˛ |
| Temp. range: | up to 600 °C |
| Pressure: | up to 75 mbar |
| Materials: | carbon steels, stainless steels |
| Actuation: | electric, pneumatic or hydraulic |
| Insulation: | internal, external |