| 摘要 |
PROBLEM TO BE SOLVED: To provide an axial flow type turbomachine excellent in assembly property, high in sealing performance between a stationary blade inner ring and a moving blade inner ring, and with reduced degradation in sealing performance caused by heat extension in an axial direction, thermal elongation in a radial direction, or centrifugal elongation. SOLUTION: In the axial flow type turbomachine, a plurality of stages of moving blade rows and stationary blade rows are provided along a rotation shaft 5. The moving blade row is constituted of a plurality of moving blades 6 attached to an outer circumference of the moving blade inner ring 7 fitted to the rotation shaft 5. The stationary blade row is constituted of a plurality of stationary blades 2 attached between an outer circumference of the stationary blade inner ring 3 surrounding the rotation shaft 5 and a fixing part. At least one of front and back faces in an axial direction of the stationary blade inner ring 3 is formed in a stepwise shape in a direction narrowing inner ring width from an outside to inside in a radial direction, and annular fins 13 are disposed to an opposite side face of the moving blade inner ring 7. COPYRIGHT: (C)2005,JPO&NCIPI
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