Patent US3004348A successfully refreshed from Google Patents.
Patent US3882680A successfully refreshed from Google Patents.
US3882680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
By-pass system
Assignee: Babcock and Wilcox Co
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Filing: 1972-04-18
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Granted: 1975-05-13
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Expires: 1992-04-18
Abstract
Abstract A method and apparatus providing positive control of steam conditions during start up, shutdown and low load operation of the vapor generator including by-passing vapor around the heating, reheating and turbine zones for discharge to the condenser and using the by-passed vapor to attemperate the outflow from the heating and reheating zones.
Inventors
- 👤 Oliver W Durrant
- 👤 Kurt H Haller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:17
CPC Classifications
F; F01; F01K; F01K3/00; F01K3/18; F01K3/20; F01K3/22; F22; F22G; F22G5/00; F22G5/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
In a power plant system having vapor generating means, turbine means flow connected therewith, vapor superheating means flow connectedly interposed between the generating and turbine means, and condenser means disposed in flow receiving relation with the turbine means, the improvement comprising conduit means by-passing said superheating and turbine means, valve means for adjusting the vapor flow through the superheating and conduit means, said conduit means including means for admixing at least a portion of the by-passed vapor with the superheated vapor to maintain the vapor temperature entering the turbine means within a given limit, and means for discharging the remaining by-passed vapor into the condenser means.
Claim 2
Dependent Claim
106 words
In a power plant system having vapor generating means, turbine means flow connected therewith, vapor superheating means flow connectedly interposed between the generating and turbine means, and condenser means disposed in flow receiving relation with the turbine means, the improvement comprising conduit means by-passing said superheating and turbine means, valve means for adjusting the vapor flow through the superheating and conduit means, said conduit means including means for admixing at least a portion of the by-passed vapor with the superheated vapor to maintain the vapor temperature entering the turbine means within a given limit, and means for discharging the remaining by-passed vapor into the condenser means.
Claim 3
Dependent Claim
67 words
In a power plant system according to claim 1 wherein said turbine means includes a high and a low pressure turbine, vapor reheating means flow connectedly interposed between said high and low pressure turbines, said conduit means including means for admixing at least a portion of the by-passed vapor with the reheated vapor to maintain the vapor temperature entering the low pressure turbine within a given limit.
Claim 4
Independent Claim
97 words
The method of starting and shutting a power plant system in which, during normal operation, a vaporizable fluid is successively passed through vapor generating means, vapor superheating means, turbine means and condenser means, and including conduit means by-passing the superheating and turbine means, and comprising the steps of passing at least a portion of the generated vapor through the conduit means, admixing at least a portion of the by-passed vapor with the superheated vapor to maintain the vapor tempErature entering the turbine means within a given limit, and discharging the remaining by-passed vapor to said condenser means.
Claim 5
Independent Claim
97 words
The method of starting and shutting a power plant system in which, during normal operation, a vaporizable fluid is successively passed through vapor generating means, vapor superheating means, turbine means and condenser means, and including conduit means by-passing the superheating and turbine means, and comprising the steps of passing at least a portion of the generated vapor through the conduit means, admixing at least a portion of the by-passed vapor with the superheated vapor to maintain the vapor tempErature entering the turbine means within a given limit, and discharging the remaining by-passed vapor to said condenser means.
Claim 6
Dependent Claim
71 words
The method of starting and shutting a power plant system according to claim 3 wherein said turbine means includes a high and a low pressure turbine, vapor reheating means flow connectedly interposed between the high and low pressure turbines, and including the step of admixing at least a portion of the by-passed vapor with the reheated vapor to maintain the vapor temperature entering the low pressure turbine within a given limit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |