Rotor balancing device and method

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 5/10 (2006.01) F01D 25/18 (2006.01) F16F 15/10 (2006.01) F16F 15/22 (2006.01)

Patent

CA 2542621

A gas turbine rotor assembly includes a shaft (20), an oil scoop (50) and a seal runner (56) coaxially attached to the shaft. The oil scoop has a first, integral counterbalance weight (80) and the seal runner has a second, integral counterbalance weight (82). The angular positions of the oil scoop and the seal runner on the shaft are selected such that a shaft imbalance is compensated for by the counterbalance weights. Similarly, any pair of interlocking annular components located on the rotor shaft can be machined to contain counterbalance weights similar to the preferred embodiment. A corresponding method of balancing an imbalanced shaft is also taught.

La présente invention concerne un ensemble rotor, qui comprend un arbre; un premier élément fixé de manière coaxiale à l'arbre pour accomplir une première fonction dans l'ensemble rotor et agir comme un premier contrepoids; et un second élément fixé de manière coaxiale à l'arbre pour accomplir une seconde fonction dans l'ensemble rotor et agir comme un second contrepoids, lesdits premier et second contrepoids étant combinés pour équilibrer l'ensemble rotor. L'invention concerne également un procédé d'équilibrage d'un ensemble rotor comprenant un arbre et présentant un déséquilibre résiduel. Le procédé consiste à fixer à l'arbre, de manière coaxiale, un premier élément accomplissant une première fonction associée à un premier contrepoids pour agir sur l'arbre; et un second élément accomplissant une seconde fonction associée à un second contrepoids pour agir sur l'arbre, de sorte que lesdits premier et second éléments corrigent le déséquilibre résiduel.

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