Hydraulic turbo machine wicket gate seals

Details Hydraulic turbo machine wicket gate seals Hydraulic turbo machine wicket gate seals

F - Mech Eng,Light,Heat,Weapons

03

B

138/32.05

F03B 3/18 (2006.01)

Patent

CA 1058056

ABSTRACT OF THE DISCLOSURE A hydraulic turbo-machine incorporating wicket gates for purpose of controlling and closing down the flow of working fluid through the machine is provided with an annular ring gate selectively operable to take up any operating clearance between the casing and the adjacent axial edge of the wicket gates. This arrangement makes it practical to incorporate relatively large initial clearances between the wicket gates and the fixed machine structure, so as to leave provision for natural contraction of such clearances during the life of the machine, due to shrinkage of the concrete or other expected or unexpected causes. The operation of the annular ring as a piston within a cylinder is facilitated utilizing penstock water or oil under pressure as the motivating fluid.

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