| 摘要 |
PROBLEM TO BE SOLVED: To allow a plurality of division seal fins provided a fixed part or a plurality of division seal fin facing parts to move in a radial direction through interlock and synchronization in normal time, and to prevent a fixed part side and a rotation part side from being excessively damaged by reducing impact generated when the rotation part side rapidly contacts with the fixed part side.SOLUTION: As an example, an elastic member such as a flat spring 6, which applies a force for opening a circumferential division surfaces of a seal substrate plate 3c1 that is a division seal fin facing part provided in a fixed part such as a nozzle diaphragm inner wheel side 3a on a circumferential division surface, is installed so that its position is fixed on one side of the facing circumferential division surface. |
