Importance

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Abstract

A balance assembly for turbine rotating components, such as turbine rotors, as well as method for installing and/or adjusting at least one balance weight in the balance assembly and turbine section having this balance assembly and a radially extending access pathway for accessing this balance assembly. The balance assembly comprises; (a) a balance weight retention member having a circumferential periphery and a slot formed therein along at least a portion thereof, the slot having: (1) a bottom surface; (2) an opening; and (3) a pair of spaced apart and opposed side walls connecting the bottom surface and the opening, the side walls sloping inwardly between the bottom surface and the opening to define a balance weight engaging section; (b) at least one balance weight configured and sized to be insertable through the opening of the slot and to be positionable for movement within the slot and having a pair of spaced apart generally inwardly sloping shoulder surfaces capable of engaging the side walls of the slot at the balance weight engaging section; and (c) a balance weight securing member associated with the at least one balance weight that can be actuated to: (1) move the at least one balance weight away from the bottom surface so that the shoulder surfaces engage the side walls at the balance weight engaging section such that the at least one balance weight is in a secured position within the slot; or (2) move the at least one balance weight towards the bottom surface so that the shoulder surfaces do not engage the side walls at the balance weight engaging section such that the at least one balance weight is in a unsecured position within the slot.

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First Claim