Unison ring support system

Details Unison ring support system Unison ring support system

1981-09-23

1983-02-15

Hornsby, Harvey C.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

415134, F01D 1716

Patent

active

043738591

ABSTRACT:
In a turbomachine having a cylindrical casing, a stage of adjustable vane assemblies including vanes rotatable on the casing and actuating arms rotatable with the vanes, a unison ring around the casing, and bearing means between each actuating arm and the unison ring operative to rotate each arm in unison with the unison ring while permitting relative radial thermal growth of the vanes and arms incident to temperature changes during machine operation, a support system for the unison ring including three radially inwardly directed attachment nodes on the unison ring and three Bowden cable assemblies on the casing between the attachment nodes, the Bowden cable assemblies having push-pull elements capable of force transmission only lengthwise pivotally connected to each attachment node with ends directed generally tangent to a circle defined by the cable assemblies so that net forces exerted by the push-pull elements to support the unison ring are directed tangent to the circle.

REFERENCES:
patent: 2923459 (1960-02-01), Taylor
patent: 3667860 (1972-06-01), Endress et al.
patent: 4314791 (1982-02-01), Weiler

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