| 摘要 |
PROBLEM TO BE SOLVED: To decrease diffuser outlet pressure on an opposite side of a fluid outlet, and equalize pressure distribution of an outlet casing in a circumferential direction. SOLUTION: In an axial turbine 1 which leads a fluid F passing through a moving blade 2 in the direction of a turbine axis C using a circular diffuser 3 in the radial direction outside, and discharges the one from a fluid outlet 5 through an outlet casing 4, the circular diffuser 3 is leaned to a side of the fluid outlet 5 against the turbine axis C. A passage length for an opposite side of the fluid outlet 5 of the circular diffuser 3 becomes shorter than that for the side of the fluid outlet 5, a pressure increasing rate on the opposite side worsens intentionally, diffuser outlet pressure decreases, and diffuser inlet pressure decreases. Also, the diffuser outlet pressure is differentiated in each circumferential direction position, and pressure distribution of the outlet casing 4 is equalized.
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