Gas turbine engine dry-type low-NOx combustion adjustment method

A gas turbine and combustion adjustment technology, which is applied to engine components, turbine/propulsion fuel delivery systems, fuel control of turbine/propulsion devices, etc., and can solve problems such as unstable combustion of large gas turbines

Active Publication Date: 2013-11-27
SHANGHAI MINGHUA ELECTRIC POWER TECH & ENG +2
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Problems solved by technology

[0007] The present invention aims at the existing dry low NO x Combustion technology for large gas turbines has

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  • Gas turbine engine dry-type low-NOx combustion adjustment method
  • Gas turbine engine dry-type low-NOx combustion adjustment method
  • Gas turbine engine dry-type low-NOx combustion adjustment method

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Embodiment Construction

[0025] In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the present invention will be further explained below in conjunction with specific drawings.

[0026] See figure 1 , Which shows the existing gas turbine DLN-2+ gas fuel system. The gas fuel system consists of auxiliary shutoff valve (ASV), speed ratio valve (SRV), diffusion combustion gas control valve (DGCV), PM4 premixed gas control valve (PM4GCV), PM1 premixed gas control valve (PM1GCV), etc. The DGCV control valve regulates the amount of fuel entering the D5 fuel nozzle, the PM4GCV control valve regulates the flow into the PM4 fuel nozzle, and the PM1GCV control valve regulates the flow into the PM1 fuel nozzle.

[0027] The system uses dry low NO x Combustion technology, in the combustion process, its combustion conditions are easily affected by fuel and environmental parameters and become unstable, and combustion oscillation occurs,...

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Abstract

The invention discloses a gas turbine engine dry-type low-NOx combustion adjustment method. According to the analysis of the combustion situation, the method is used for adjusting the D5, PM1, PM4 of a DLN-2+ combustion system as well as a purge air control value in real time through the adjustment of control constant until the combustion dynamic pressure monitoring result and the NOx and CO emission both have appropriate values. According to the invention, the combustion of a modern gas turbine engine adopting a premixed combustion technique is optimized and adjusted; the running state of the modern gas turbine engine is improved; the running stability of the modern gas turbine engine is enhanced; the damage to the heat parts of the gas turbine engine is relieved; influences of heat value variation and environment temperature variation on the operation of the gas turbine engine are prevented.

Description

Technical field [0001] The invention belongs to the technical field of combustion monitoring and analysis, and particularly relates to a gas turbine combustion pressure pulsation collection analysis and adjustment technology. Background technique [0002] In order to reduce gas turbine NO x All modern advanced gas turbines use premixed combustion technology. Before combustion, fuel and oxygen (or air) are pre-mixed into a uniform mixture. This combustible mixture is called premixed gas. The process of premixed gas ignition and combustion in the burner is called premixed combustion. ). [0003] Although premixed combustion reduces the NO of gas turbine x However, due to the close to the lean fuel flameout limit, the combustion conditions are easily affected by fuel and environmental parameters and become unstable, causing combustion oscillations, which affect the safe and stable operation of the gas turbine. The instability of combustion is mainly manifested as the violent pulsati...

Claims

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Application Information

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IPC IPC(8): F02C9/48
Inventor 黄素华史佩钢钱忠荆迪王健
Owner SHANGHAI MINGHUA ELECTRIC POWER TECH & ENG
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