| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently collect a cooling medium by reducing a cross flow and controlling the flow of the cooling medium, in a turbine blade for performing impingement cooling. <P>SOLUTION: A stationary blade 10 includes a blade wall 11 and an insert 15. An insert 18 is provided to face the inner surface of the blade wall 11 and includes: an outer insert plate 22 including a hole 23 at a position facing the blade wall 11; an inner insert plate 21 provided at the opposite side of the blade wall 11 while facing the outer insert plate 22; and a hollow bridge connecting the inner insert plate 21 and the outer insert plate 22. An opening is provided while passing through the hollow bridge, the opening communicating a space between the blade wall 11 and the outer insert plate 22 with a space in contact with the surface of the inner insert plate 21 at the opposite side of the outer insert plate 22. The opening is positioned between two lines of holes. A cooling medium supplied to a space between the inner insert plate 21 and the outer insert plate 22 is injected from the holes onto the inner surface of the blade wall 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
