Generator sealing oil temperature control method and apparatus u

Details Generator sealing oil temperature control method and apparatus u Generator sealing oil temperature control method and apparatus u

1992-03-06

1993-02-16

Lazarus, Ira S.

Lubrication

Systems

With lubricant treatment means

1841041, 277 3, 277 22, 277 75, F01M 500

Patent

active

051862778

ABSTRACT:
A system for providing seal oils to a gland seal that surrounds the shaft of a generator with the temperature differences between the oils minimized, as well maintained at a temperature which is greater than that for a bearing lubrication oil supply system. The temperature of the air-side seal oil is used as a reference and then the difference between the air- and hydrogen-side seal oil temperatures is used to control the hydrogen-side seal oil temperature. The air-side temperature is controlled by a separate controller using the bearing oil temperature as a reference. The system advantageously prevents thermal differential expansion from occurring in the generator shaft and gland seal, and eliminates the need for operator attention for seal oil temperature control.

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"Turbine-Generator Instruction Book".

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