GUIDE VANE OF HYDRAULIC MACHINERY AND HYDRAULIC MACHINE
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United States of America Patent
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Issued Date -
Sep 14, 2017
app pub date -
Oct 11, 2016
filing date -
Mar 10, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A vane body of a guide vane includes a leading edge, and a trailing edge which is located closer to a runner than the leading edge, when located radially outside the runner. A projection extending in a direction from the trailing edge toward the leading edge is provided on an internal-diameter side blade face of the vane body, at least in any one of one side area of the internal-diameter side blade face and the other side area thereof in an axial direction of a guide vane rotation shaft, the internal-diameter side blade face being disposed on a side of the runner. The projection has a projection rear end of an arcuate shape, which projection rear end is formed to extend along a rotation trajectory which is drawn by the trailing edge when the vane body is rotated about the guide vane rotation shaft.
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