Guillotine Damper
Guillotine dampers are generally used when space limitations don't allow for longer damper casings. As stand-alone solutions, this damper type will often be used in coal fired power plants, where high ash accumulation has to be handled. Almost the full cross-section of the duct is available once the guillotine blade is fully retracted, causing a very low pressure drop.
| ||
 | |  |
Function:
- Isolates a duct section for process or maintenance reasons
- 100 % isolation is achieved with seal air
- Actuation forces conveyed by robust rack&pinion or chain design
Advantages:
- Short face-to-face length
- Low pressure drop
- Low seal air requirement
- Closed bonnet design avoids condensation
| ||
 | |  |
Parameters:
| Size: | up to 100 m˛ |
| Temperature: | up to 650 °C |
| Pressure: | up to 150 mbar |
| Materials: | carbon steels, stainless steels |
| Actuation: | electric, pneumatic or hydraulic |
| Insulation: | internal, external |