US3820336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation plant for a steam turbine
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1972-07-13
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Granted: 1974-06-28
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Expires: 1992-07-13
Abstract
Abstract A steam power plant consisting of high and low pressure turbine sections coupled together to drive a load such as an electric generator is provided with a composite condensing system which consists of a water-cooled main condenser connected to the steam discharge of the low pressure turbine section and an air-cooled auxiliary condenser connected to receive steam from the steam flow path intermediate the high and low pressure turbine sections. Steam flow to the auxiliary condenser can be controlled by valve means operated manually or automatically, as required, depending upon various limiting environmental parameters related to the available water supply for the main condenser.
Inventors
- 👤 A Schwarzenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:39
CPC Classifications
F; F01; F01K; F01K9/00; F01K9/003
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
A steam turbine plant comprising steam turbine means receiving pressurized steam from a boiler, and a composite condensing system for the steam comprising a main water-cooled condenser to which steam is delivered after passing completely through said turbine means, a main condensate return pipe line extending from said water-cooled condenser back to the boiler, an air-cooled auxiliary condenser, an auxiliary pipe line connected into the steam flow path through said turbine means at a point prior to final expansion of the steam to the operating pressure of said water-cooled condenser and which leads to said air-cooled auxiliary condenser, controllable valve means located in said auxiliary pipe line, said valve means being opened to divert a portion of the steam from said turbine means for flow through said air-cooled auxiliary condenser in response to a reduction in the cooling capacity of said main water-cooled condenser below the normal value established for handling the total amount of steam normally passing through said turbine means and an auxiliary condensate pipe line returning the condensate from said air-cooled auxiliary condenser back to the boiler.
Claim 2
Dependent Claim
180 words
A steam turbine plant comprising steam turbine means receiving pressurized steam from a boiler, and a composite condensing system for the steam comprising a main water-cooled condenser to which steam is delivered after passing completely through said turbine means, a main condensate return pipe line extending from said water-cooled condenser back to the boiler, an air-cooled auxiliary condenser, an auxiliary pipe line connected into the steam flow path through said turbine means at a point prior to final expansion of the steam to the operating pressure of said water-cooled condenser and which leads to said air-cooled auxiliary condenser, controllable valve means located in said auxiliary pipe line, said valve means being opened to divert a portion of the steam from said turbine means for flow through said air-cooled auxiliary condenser in response to a reduction in the cooling capacity of said main water-cooled condenser below the normal value established for handling the total amount of steam normally passing through said turbine means and an auxiliary condensate pipe line returning the condensate from said air-cooled auxiliary condenser back to the boiler.
Claim 3
Dependent Claim
34 words
A steam turbine plant as defined in claim 1 wherein the respective condensates from said main and auxiliary condensate pipe lines are mixed together at a point where they have substantially the same temperature.
Claim 4
Dependent Claim
38 words
A steam turbine plant as defined in claim 1 wherein said controllable valve means located in said auxiliary pipe line connected into the steam flow path through said turbine means is constituted by a variable setting throttle valve.
Claim 5
Dependent Claim
36 words
A steam turbine plant as defined in claim 1 wherein said controllable valve means located in said auxiliary pipe line connected into the steam flow path through said turbine means is constituted by an open-close valve.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |