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Method to operate a combustor of a gas turbine

A technology of gas turbines and burners, applied in combustion methods, gas turbine devices, fuel control of turbine/propulsion devices, etc., to achieve the effect of avoiding high emissions

Active Publication Date: 2015-09-16
西门子能源全球两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution does not require shutting down the gas turbine to solve the problem, but requires a professional on site to operate the manual gas valve

Method used

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  • Method to operate a combustor of a gas turbine
  • Method to operate a combustor of a gas turbine
  • Method to operate a combustor of a gas turbine

Examples

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Embodiment Construction

[0024] figure 1 A two-dimensional depiction of a gas turbine GT to be controlled by the method according to the invention is schematically shown. The basic elements of a gas turbine GT include a compressor CO, a combustor CB and a turbine TB. Said compressor CO compresses an oxygen-containing gas OCG, preferably air, and delivers it downstream to said burner CB to be mixed with gaseous fuel F and combusted by a plurality of burners B1 , B2 , . . . , Bn. The burners B1, . . . , Bn respectively receive fuel F through undepicted fuel lines, and inject the fuel F into In the first cavity CV of said corresponding burner B1, B2, . . . , Bn. The burners B1, B2, . . . , Bn also include swirlers SW. Said swirler SW is positioned circumferentially around said central axis CX and injects into said cavity CV oxygen-containing gas OSG optionally mixed with fuel F inclined to said central axis CX.

[0025] Downstream of the flow of the mixture of oxygen-containing gas OCG and fuel F, th...

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PUM

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Abstract

Method to operate a combustor (CB) of a gas turbine (GT), wherein the gas turbine (GT) comprises a compressor (CO) said combustors (CB) and the turbine (TB) and at least two temper- ature measurements (TN1, …, TNX, …, TNY, …, TNN) downstream said combustor (CB) to measure a respective combustion gas (CG) temperature, wherein said compressor (CO) delivers an oxygen containing gas (OCG) to said combustor (CB), wherein said combustor (CB) comprises at least two burners (B1, …, B2) and at least one main combustion chamber (MCC) downstream said burners (B1, …, B2), wherein at least two of said burners (B1, …, B2) join commonly into said at least one main combustion chamber (MCC) to generate said combustion gas (CG) from burning fuel (F) and said oxygen containing gas (OCG), wherein one extraction (EX) is provided to tap off at least a portion of the oxygen containing gas (OSG) downstream said compressor (CO) and upstream of said combustors (CB), wherein said extraction (EX) comprises a valve (BV) to control the portion of the oxygen containing gas (OSG) to be tapped off. To reduce emissions it is proposed that said method comprises the steps of: - monitoring the combustion gas temperature by said tem- perature measurements (TN1, …, TNX, …, TNY, …, TNN) at different locations at respectively equal flow-distances to the burner of the combustion gas (CG), - comparing said temperature measurements (TN1, …, TNX, …, TNY, …, TNN), opening said valve (BV) or increasing the opening position of said valve (BV) when said comparison reveals that a difference between said temperature measurements exceeds a temperature difference threshold ∆T1.

Description

technical field [0001] The invention relates to a method of operating a combustor of a gas turbine comprising a compressor, said combustor, generated combustion gases and a turbine and at least two temperature measuring devices downstream of said combustor for measuring A corresponding combustion gas temperature, wherein the compressor delivers oxygen-containing gas to a combustor, wherein the combustor includes at least two burners and at least one combustion chamber downstream of the at least two burners , wherein at least two of said at least two burners are jointly engaged into said at least one combustion chamber to generate said combustion gases from combustion fuel and said oxygen-containing gas, wherein an extraction means to extract at least a portion of the oxygen-containing gas downstream of the compressor and upstream of the burner, wherein the extraction means comprises a valve to control the portion of the oxygen-containing gas to be extracted, wherein the method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/26F23M23/20
CPCF23N5/022F23R3/50F23N2041/20F23N2037/20F23N3/042F23N5/242F23N2037/02F23R3/26F23N2025/08F05D2270/0831F02C3/13F23N2225/08F23N2237/20F23N2237/02F23N2241/20F02C9/18F02C9/48F02C9/28F02C9/16F02C6/08
Inventor A.博纳尔多M.安德森
Owner 西门子能源全球两合公司