| 摘要 |
A turbine ( 1 ) with a rotationally symmetrical rotor ( 4 ) on rotary bearings which has on its outer perimeter moving blade retaining grooves running transverse to the outer perimeter and set at the same angular distance from one another, having a moving blade ( 13 ) that has a vane ( 24 ) and a moving blade foot ( 19 ) which corresponds to the moving blade retaining groove ( 18 ) and which is inserted in one of the moving blade retaining grooves ( 18 ), wherein a platform ( 23 ) is located between the moving blade foot ( 19 ) and the vane ( 24 ) and extends transverse to the moving blade foot ( 19 ), having a baffle cooling element ( 22 ) which is located between two directly adjacent moving blades ( 13 ) between its platforms ( 23 ) and the rotor ( 4 ) and through which a cooling fluid can flow to cool the platform ( 23 ). It is proposed that the baffle cooling elements ( 22 ) are each formed from two independently moveable halves ( 20, 21 ) and that the two halves ( 20, 21 ) of the baffle cooling elements ( 22 ) are automatically pressed tight against each other by centrifugal force during turbine operation.
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