Hydraulic turbine and stay ring

Details Hydraulic turbine and stay ring Hydraulic turbine and stay ring

2006-07-07

2008-10-21

Edgar, Richard (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C415S205000, C415S209100

Reexamination Certificate

active

07438521

ABSTRACT:
A stay ring of a hydraulic turbine has: a ring-shaped upper wall, a ring-shaped lower wall arranged below the upper wall forming a ring-shaped flow channel between the upper wall and the lower wall; and stay vanes arranged in array with spaces in a peripheral direction in the ring-shaped flow channel and rigidly secured to the upper and lower walls. The upper wall and the lower wall are inclined so as to reduce height of the ring-shaped flow channel toward outlet at least near inlet end thereof. The straightening bodies are arranged along inner surfaces of the upper wall and the lower wall at least near inlet end to reduce inclination of water flow in the stay ring.

REFERENCES:
patent: 4218182 (1980-08-01), Tsunoda et al.
patent: 2000-297735 (2000-10-01), None

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