US Patent No: 8,051,953
Number of patents in Portfolio can not be more than 2000
Hydrogen cooled generator lubricant drain system
Stats
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Nov 8, 2011
Issued date -
Jan 4, 2010
filing date -
12/651,609
serial no -
In Force
status
Importance
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Abstract
A hydrogen cooled generator includes a lubricant drain system. The lubricant drain system includes a hydrogen detraining tank having a hollow interior portion. A sensor is operatively mounted in the hydrogen detraining tank. The sensor is configured and disposed to detect an interface zone between an amount of lubricant and an amount of hydrogen gas in the hollow interior portion. A drain line is fluidly coupled to the hydrogen detraining tank. The drain line includes a first end portion that is exposed in the hollow interior portion and a second end portion. A valve is mounted in the drain line. A controller is operatively connected to the sensor and the valve. The controller is configured to selectively open the valve allowing a portion of the amount of lubricant to flow from the hollow interior portion when the interface zone is above the first end portion of the drain line.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,906,374 Dual seal barrier fluid leakage control method utilizing linearly displaceable member | 13 | 1997 | |
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| 4,390,082 Reserve lubricant supply system | 21 | 1980 | |
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| 5,176,174 Flow metering and distribution devices | 3 | 1991 | |
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| 7,367,427 Accessory lubrication system for a turbine plant | 2 | 2004 | |
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| 4,495,035 Fluid handling method with improved purification | 8 | 1981 | |
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| 5,186,277 Generator sealing oil temperature control method and apparatus utilizing temperature matching | 8 | 1992 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 8, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 8, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 8, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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