Differential casing expansion in steam turbines arises from temperature-induced expansion discrepancies between the casing and rotor. As steam heats the turbine components, the casing and rotor expand at different rates due to varying temperatures.
This divergence, if unaddressed, may cause mechanical strain or misalignment. To counter this, engineers employ techniques like flexible supports and specialized materials with distinct expansion coefficients. These measures ensure optimal turbine performance and prevent potential damage from the differing expansion rates between the casing and rotor.
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