Method and apparatus for automatically reoiling an electric generator
First Claim
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1. An apparatus for automatically replenishing oil in a coolant system of an electric generator, said apparatus comprising:
- an electric generator;
a coolant system for cooling said electric generator;
means for producing a first signal representative of the speed of said electric generator;
means for producing a second signal representative of the pressure of oil in said coolant system of said electric generator;
means for combining said first and second signals with a reference signal, representative of an acceptable pressure of said oil, to produce a control signal representative of a low oil condition in said coolant system; and
means for delivering additional oil to said coolant system in response to said control signal.
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Abstract
A method for automatically replenishing oil in a coolant system of an electric generator produces a first signal representative of the speed of the generator and a second signal representative of the pressure of oil in the coolant system of the generator. These signals are combined with a reference signal to produce a control signal representative of a low oil condition in the coolant system. When such low oil condition exists, additional oil is delivered to the coolant system in response to the control signal. In the preferred embodiment, this additional oil is supplied from a source of high pressure oil.
9 Citations
18 Claims
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1. An apparatus for automatically replenishing oil in a coolant system of an electric generator, said apparatus comprising:
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an electric generator; a coolant system for cooling said electric generator; means for producing a first signal representative of the speed of said electric generator; means for producing a second signal representative of the pressure of oil in said coolant system of said electric generator; means for combining said first and second signals with a reference signal, representative of an acceptable pressure of said oil, to produce a control signal representative of a low oil condition in said coolant system; and means for delivering additional oil to said coolant system in response to said control signal. - View Dependent Claims (2, 9)
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3. A method for automatically replenishing oil in a coolant system of an electric generator, said method comprising:
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providing an electric generator; providing a coolant system for cooling said electric generator; producing a first signal representative of the speed of said electric generator; producing a second signal representative of the pressure of oil in said coolant system of said electric generator; combining said first and second signals with a reference signal, representative of an acceptable pressure of said oil, to produce a control signal representative of a low oil condition in said coolant system; and delivering additional oil to said coolant system in response to said control signal. - View Dependent Claims (4, 5, 6, 7)
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8. An apparatus for automatically replenishing oil in a coolant system of an electric generator, said apparatus comprising:
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an electric generator; a coolant system for cooling said electric generator; means for producing a first signal representative of the speed of said electric generator; means for producing a second signal representative of the pressure of oil in said coolant system of said electric generator; an oil reservoir containing oil at a pressure greater than the pressure of said oil in said coolant system of said electric generator; an oil path connecting said reservoir with said coolant system of said electric generator; a normally closed valve in said oil path; and control means for combining said first and second signals with a reference signal, representative of an acceptable pressure of said oil, to produce a control signal representative of a low oil condition in said coolant system, and for opening said valve in response to said control signal. - View Dependent Claims (10, 11)
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12. A method for automatically replenishing oil in a coolant system of an electric generator, said method comprising the steps of:
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producing a first signal representative of the speed of an electric generator; producing a second signal representative of the pressure of oil in a coolant system of said electric generator; providing an oil reservoir containing oil at a pressure greater than the pressure of said oil in aid coolant system of said electric generator; providing an oil path connecting said reservoir with said coolant system of said electric generator; providing a valve in said oil path; combining said first and second signals with a reference signal, representative of an acceptable pressure of said oil, to produce a control signal representative of a low oil condition in said coolant system; and opening said valve in response to said control signal. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification