Method of installing insulation between a retaining ring and a rotor of a dynamoelectric machine
AssigneeGeneral Electric Company
InventorsTimothy J. Laskey, William P. Dobbins
Life of this patent
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Abstract
The apparatus includes a stand for mounting a mandrel against rotation and a winding assembly for disposition within the mandrel. The mandrel has a slot for receiving a flat sheet through a side wall of the mandrel. A clamping mechanism on the winding assembly clamps the leading edge to the winding assembly within the mandrel. By winding the assembly, the flat sheet is drawn into the mandrel and formed into an arcuate configuration. The mandrel with curved sheet is removed from the stand and disposed in an oven for setting the plastic material in the curved configuration whereby the flat sheet is preformed into a radius approximating the radius of the rotational part about which the insulation will be installed.
Claims5
A method of installing insulation between a retaining ring and a rotor of a dynamoelectric machine comprising the steps of:
- providing insulation sheets of a glass fabric impregnated with an epoxy-phenolic resin;
- thermoforming the glass fabric impregnated sheets in an arcuate configuration for fitting about at least part of the rotor;
- fixing the formed sheets on the rotor;
- and
- shrink-fitting the retaining ring onto the insulation.
Dependencies are inferred from the claim text.