US3259111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Start-up system for forced flow vapor generator
Assignee: Babcock and Wilcox Co
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Filing: 1964-06-25
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Granted: 1966-07-05
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Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 Paul H Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:48
CPC Classifications
F; F22; F22B; F22B29/00; F22B29/06; F22B29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
230 words
THE METHOD OF STARTING A POWER PLANT SYSTEM IN WHICH, DURING NORMAL OPERATION, VAPORIZABLE FLUID IS SUCCESSIVELY PASSED THROUGH A HEATING ZONE, A RECEIVING ZONE, AND A SUPERHEATING ZONE TO A VAPOR TURBINE, SAID METHOD COMPRISING PASSING A VAPORIZABLE FLUID UNDER A SUBSTANTIAL PRESSURE THROUGH THE HEATING ZONE WHILE PASSING HEATING GASES IN INDIRECT HEAT-TRANSFER RELATION WITH THE FLUID, PASSING THE FLUID SO HEATED TO THE RECEIVING ZONE WHILE REDUCING THE PRESSURE OF THE FLUID TO CAUSE PART OF IT TO FLASH INTO VAPOR, EFFECTING SEPARATION OF THE VAPOR PORTION OF THE FLUID IN THE RECEIVING ZONE AND THEN PASSING IT THROUGH THE SUPERHEATING ZONE, WHILE RECIRCULATING THE REMAINING FLUID FROM THE RECEIVING ZONE TO THE HEATING ZONE, CONDENSING THE VAPOR DISCHARGE FROM THE SUPERHEATING ZONE AND RECIRCULATING IT TO THE HEATING ZONE, INCREASING THE RATE OF HEATING GAS FLOW AND OF VAPORIZABLE FLUID FLOW THROUGH SAID ZONES UNTIL PREDETERMINED CONDITIONS OF FLUID TEMPERATURE AND PRESSURE FOR STARTING THE TURBINE ARE ATTAINED, DISCONTINUING THE RECIRCULATION OF FLUID FROM THE RECEIVING ZONE TO THE HEATING ZONE AND FROM THE SUPERHEATING ZONE TO THE HEATING ZONE SO THAT ALL OF THE FLUID FROM THE HEATING ZONE PASSES TO THE RECEIVING ZONE FOR MIXING THEREIN AND THEN PASSES THROUGH THE SUPERHEATING ZONE TO THE VAPOR TURBINE, WHILE RAISING THE PRESSURE OF THE FLUID IN THE RECEIVING AND SUPERHEATING ZONES AND LOADING THE TURBINE.
Claim 2
Independent Claim
230 words
THE METHOD OF STARTING A POWER PLANT SYSTEM IN WHICH, DURING NORMAL OPERATION, VAPORIZABLE FLUID IS SUCCESSIVELY PASSED THROUGH A HEATING ZONE, A RECEIVING ZONE, AND A SUPERHEATING ZONE TO A VAPOR TURBINE, SAID METHOD COMPRISING PASSING A VAPORIZABLE FLUID UNDER A SUBSTANTIAL PRESSURE THROUGH THE HEATING ZONE WHILE PASSING HEATING GASES IN INDIRECT HEAT-TRANSFER RELATION WITH THE FLUID, PASSING THE FLUID SO HEATED TO THE RECEIVING ZONE WHILE REDUCING THE PRESSURE OF THE FLUID TO CAUSE PART OF IT TO FLASH INTO VAPOR, EFFECTING SEPARATION OF THE VAPOR PORTION OF THE FLUID IN THE RECEIVING ZONE AND THEN PASSING IT THROUGH THE SUPERHEATING ZONE, WHILE RECIRCULATING THE REMAINING FLUID FROM THE RECEIVING ZONE TO THE HEATING ZONE, CONDENSING THE VAPOR DISCHARGE FROM THE SUPERHEATING ZONE AND RECIRCULATING IT TO THE HEATING ZONE, INCREASING THE RATE OF HEATING GAS FLOW AND OF VAPORIZABLE FLUID FLOW THROUGH SAID ZONES UNTIL PREDETERMINED CONDITIONS OF FLUID TEMPERATURE AND PRESSURE FOR STARTING THE TURBINE ARE ATTAINED, DISCONTINUING THE RECIRCULATION OF FLUID FROM THE RECEIVING ZONE TO THE HEATING ZONE AND FROM THE SUPERHEATING ZONE TO THE HEATING ZONE SO THAT ALL OF THE FLUID FROM THE HEATING ZONE PASSES TO THE RECEIVING ZONE FOR MIXING THEREIN AND THEN PASSES THROUGH THE SUPERHEATING ZONE TO THE VAPOR TURBINE, WHILE RAISING THE PRESSURE OF THE FLUID IN THE RECEIVING AND SUPERHEATING ZONES AND LOADING THE TURBINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |