| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve reliability of turbine moving blades since vibration in a high speed rotation range and a low speed rotation range of a turbine is suppressed, and also since an excessive increase of a contact reaction force between connection means in adjacent turbine moving blades is prevented. <P>SOLUTION: Shrouds 16 of mutually adjacent turbine moving blades 11, 12, ..., have a first contact face part F provided with corresponding flat contact faces 11f, 12f, ..., forming a sharp angleαfor a rotation direction U of the turbine and a second contact face part G provided with corresponding flat contact faces 11g, 12g, ..., forming an obtuse angleβfor the rotation direction of the turbine. In an increasing process of the turbine rotation speed, the second contact face part shifts from a contact state to a separate state, then the first contact face part and the second contact face part are brought to the separate state, and then the first contact face part can shift from the separate state to the contact state. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
