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- Designated Duty Engineer (Motor-Gas Turbine Plants (1000/4000 HP)) »
- Q632 - Gas Turbine Plants
11. What type of air seal is used in the combustor and turbine midframe of a gas turbine?
Fishmouth seals are used in the combustor and turbine midframe due to their flexible metal tabs, which maintain an effective air seal while accommodating thermal expansion and rotor movement in this high-temperature environment. Other seal types are unsuitable for the extreme heat and movement present in this location.
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