TURBINE COOLING APPARATUS
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United States of America Patent
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Issued Date -
Jun 30, 2016
app pub date -
Dec 28, 2015
filing date -
Dec 28, 2015
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Abstract
A turbine cooling apparatus of an embodiment includes a cooling air supply unit and a control unit The control unit controls an operation of the cooling air supply unit during a turning operation. Here, the control unit controls the operation of the cooling air supply unit to make the cooling air supply unit supply the cooling air at a previously determined flow rate. Thereafter, the control unit controls the operation of the cooling air supply unit based on at least either of a result obtained by measuring differential expansion between a turbine rotor and a turbine casing, and a result obtained by measuring a temperature difference between an inner peripheral surface of a steam chamber positioned at an entrance of a steam flow path through which steam flows in the turbine casing and an outer peripheral surface of the steam chamber.
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