| 摘要 |
PROBLEM TO BE SOLVED: To effectively cool the inside an outer surface of gas turbine parts by forming a cooling passage connected to the outer surface in the gas turbine parts using ceramic compound material formed by combining a ceramic base material and ceramic long fiber with each other, and pour a cooling medium into the cooling passage. SOLUTION: In a moving blade composed of only a ceramic compound material 11 formed by combining a ceramic base material and ceramic lint with each other, a plurality of cooling holes 12 for pouring a cooling medium such as air are arranged on a center part of an effective part in which high temperature gas of the moving blade 10 is passed. The cooling holes 12 are connected to a cooling hole which is arranged on an embedding part of the moving blade 10, and which is also connected to a cooling hole arranged on a wheel. Micro- blow off holes 13 connected to an outer surface are arranged on a front edge part and a rear edge part of the impeller effective part, and the cooling medium flows from the blow off holes 13 to an outside. The outer surface of the moving blade 10 is covered with a heat insulating coating 14 having the thickness of about 1 mm or less so as to prevent intense heat of gas from directly transferring to the moving blade 10. |
