US6715296B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for starting a power plant
Assignee: GE Vernova GmbH
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Filing: 2002-08-12
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Granted: 2004-04-06
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Expires: 2022-08-12
Abstract
Abstract The invention relates to a method for starting a power plant ( 1 ), in particular a gas storage power plant, with the following steps: S1: ignition of an auxiliary combustion chamber ( 19 ), S2: operation of the auxiliary combustion chamber ( 19 ) in such a way that the consequently heated gas introduced into a first flow path ( 13 ) has a temperature which is below a self-ignition temperature of a fuel/oxidizer/gas mixture delivered to the main combustion chamber ( 5 ) for starting the latter, S3: operation of the auxiliary combustion chamber ( 19 ) according to step S2, until a recuperator ( 12 ) has a predetermined preheating temperature, S4: Starting of a turbine ( 3 ) and ignition of the main combustion chamber ( 5 ).
Inventors
- 👤 Velimir Bakran
- 👤 Hermann Engesser
- 👤 Peter Keller-Sornig
- 👤 Ilja Tuschy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:59
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26; F02C6/00; F02C6/14; F02C6/16; F02C7/08; Y; Y02; Y02E; Y02E60/00; Y02E60/16
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
192 words
A method for starting a power plant comprising a turbogroup with at least one turbine and with a main combustion chamber which is assigned at least one burner, a recuperator which is arranged, on the one hand, in a first flow path leading exhaust gas away from the turbogroup and, on the other hand, in a second flow path leading fresh gas toward the turbogroup, and an auxiliary combustion chamber which is assigned at least one burner and which is arranged outside the first flow path and is connected on the outlet side, at or upstream of the recuperator, to the first flow path, with the following steps: S1: ignition of the auxiliary combustion chamber, S2: operation of the auxiliary combustion chamber in such a way that the consequently heated gas introduced into the first flow path has a temperature which is below a self-ignition temperature of a fuel/oxidizer/gas mixture delivered to the main combustion chamber for starting the latter, S3: operation of the auxiliary combustion chamber according to step S2, until the recuperator has a predetermined preheating temperature, S4: starting of the turbine and the ignition of the main combustion chamber.
Claim 2
Independent Claim
192 words
A method for starting a power plant comprising a turbogroup with at least one turbine and with a main combustion chamber which is assigned at least one burner, a recuperator which is arranged, on the one hand, in a first flow path leading exhaust gas away from the turbogroup and, on the other hand, in a second flow path leading fresh gas toward the turbogroup, and an auxiliary combustion chamber which is assigned at least one burner and which is arranged outside the first flow path and is connected on the outlet side, at or upstream of the recuperator, to the first flow path, with the following steps: S1: ignition of the auxiliary combustion chamber, S2: operation of the auxiliary combustion chamber in such a way that the consequently heated gas introduced into the first flow path has a temperature which is below a self-ignition temperature of a fuel/oxidizer/gas mixture delivered to the main combustion chamber for starting the latter, S3: operation of the auxiliary combustion chamber according to step S2, until the recuperator has a predetermined preheating temperature, S4: starting of the turbine and the ignition of the main combustion chamber.
Claim 3
Dependent Claim
50 words
The starting method as claimed in claim 1 , wherein, during the preheating of the recuperator according to step S3, the second flow path is acted upon by a fresh gas flow flowing through the recuperator, in such a way that a predetermined temperature distribution is formed in the recuperator.
Claim 4
Dependent Claim
45 words
The starting method as claimed in claim 2 , wherein the fresh gas flow is extracted, downstream of the recuperator, from the second flow path and is introduced, upstream of the recuperator, into the first flow path via a first bypass line bypassing the turbogroup.
Claim 5
Dependent Claim
28 words
The starting method as claimed in claim 2 , wherein, to purge the turbogroup, the fresh gas flow is delivered to the turbogroup via the second flow path.
Claim 6
Dependent Claim
39 words
The starting method as claimed in claim 1 , wherein, to purge the main combustion chamber, the main combustion chamber is acted upon by a fresh gas flow which is delivered to the turbogroup via the second flow path.
Claim 7
Dependent Claim
24 words
The starting method as claimed in claim 1 , wherein the main combustion chamber is purged before the ignition of the auxiliary combustion chamber.
Claim 8
Dependent Claim
44 words
The starting method as claimed in claim 1 , wherein an additional firing device, which is purged before the ignition of the main combustion chamber, is arranged downstream of the auxiliary combustion chamber in the first flow path, upstream of or in the recuperator.
Claim 9
Dependent Claim
26 words
The starting method as claimed in claim 7 , wherein the additional firing device is ignited only after a successful ignition of the main combustion chamber.
Claim 10
Dependent Claim
24 words
The starting method as claimed in claim 7 , wherein the additional firing device is purged before the ignition of the auxiliary combustion chamber.
Claim 11
Dependent Claim
39 words
The starting method as claimed in claim 7 , wherein, to purge the additional firing device, the additional firing device is acted upon by a fresh gas flow which is delivered to the recuperator via the first flow path.
Claim 12
Dependent Claim
35 words
The starting method as claimed in claim 10 , wherein, to generate the fresh gas flow, an additional blower is provided, which is connected, upstream of the additional firing device, to the first flow path.
Claim 13
Dependent Claim
53 words
The starting method as claimed in claim 10 , wherein the fresh gas flow for purging the additional firing device is extracted, downstream of the recuperator, from the second flow path and is introduced into the first flow path, upstream of the additional firing device, via a first bypass line bypassing the turbogroup.
Claim 14
Dependent Claim
42 words
The starting method as claimed in claim 10 , wherein, to purge the additional firing device, the fresh gas flow used for purging the main combustion chamber is lead from the turbogroup to the additional firing device via the first flow path.
Claim 15
Dependent Claim
44 words
The starting method as claimed in claim 2 , wherein the power plant is designed as a gas storage power plant with a gas store, the fresh gas flow taking place as a result of the extraction of fresh gas from the gas store.
Claim 16
Dependent Claim
44 words
The starting method as claimed in claim 1 , wherein the auxiliary combustion chamber is run down to operation under minimum conditions before the ignition of the main combustion chamber and is shut down only after a successful ignition of the main combustion chamber.
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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) | 2007-04-06 | 2007-10-06 | 2008-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-04-06 | 2011-10-06 | 2012-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-04-06 | 2015-10-06 | 2016-04-06 | $7700.00 | Window Closed / Lapsed |