| 摘要 |
PURPOSE:To reduce a loss of energy in fluid, by providing a vane variably forming its guide angle approximately to the downstream of a vane fixedly forming its guide angle in a fluid machine equipped with the vane which guides or closes the fluid flowing into a runner. CONSTITUTION:A guide vane 2, which guides or closes fluid 10 flowing into a runner 1, is equipped to a fluid machine. Here a stay vane 3A is welded to an upper cover 6 and bottom cover 5 to fix a guide angle. While a guide vane 2A, whose guide angle can be varied by a shaft 7, is approximately arranged to the downstream side of the vane 3A. Then oppositely positioned faces of said both vanes 2, 3 are formed respectively with the vane 3 in a circular arc shape and the vane 2 in a spherical shape, and a seal member 9 is interposed in a gap 8 between said oppositely positioned faces. In this way, said both vanes 2, 3 are integrally formed to eliminate an inlet collision loss of the vane 2 and outlet mixing loss of the vane 3. |
