Radial clamp assembly for dynamoelectric machine stator coil end

Details Radial clamp assembly for dynamoelectric machine stator coil end Radial clamp assembly for dynamoelectric machine stator coil end

1984-05-11

1986-01-07

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, H02K 346

Patent

active

045636079

ABSTRACT:
A mechanical clamping assembly and the method of its application for use on the stator end windings of large steam turbine generators is provided that can be fit in the mid-involute region of the end winding, including any existing machines as may be in use in the field as well as in original manufacture. The invention maintains pressure contact between coils and strain blocks and eliminates the freedom of the coils to vibrate relative to the total end basket assembly. The method comprises steps of forming a loop of impregnated banding material that extends through apertures of support blocks that span a pair of adjacent top and bottom coils, inserting pins in the ends of the loop, twisting a pin, curing the banding material, pulling on a pin to pretension the banding and shimming the pulled pin so that upon its release a tight assembly is provided.

REFERENCES:
patent: 3024302 (1962-03-01), Coggeshall
patent: 3089048 (1963-05-01), Bahn et al.
patent: 3344296 (1967-09-01), Coggeshall et al.
patent: 3348085 (1967-10-01), Coggeshall et al.
patent: 3665234 (1972-05-01), Bishop
patent: 3949256 (1976-04-01), Cooper et al.
patent: 3949257 (1976-04-01), Cooper et al.
patent: 4238339 (1980-12-01), Khutoretsky et al.

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