| 摘要 |
PROBLEM TO BE SOLVED: To improve casing structure formed of a metal, equipped with an outer wall part having mechanical stability and in a shape continuous without cut lines, an inner wall part divided into a plurality of segments by a plurality of gaps parts for expansion, contraction, and absorption, and a coupling structure, intercoupling the inner and outer wall parts and transmitting a load in the casing structure formed of a metal of a part facing opposite to the moving blade of an axial flow compressor stage or an axial flow turbine stage. SOLUTION: The coupling structure comprises a hollow small chamber collecting structure 10, consisting of a number of sheet parts extending in a manner to rise from an inner wall part 5 and an outer wall part 3. A number of sheet parts are constituted with at least most of the sheet parts are directly interconnected. Furthermore, the hollow small chamber collecting structure is welded with an inner wall part and/or the outer wall part by brazing. |
