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Combustion control device and method for a gas turbine

A gas turbine and control device technology, which is applied in the direction of fuel control, charging system and engine components of turbine/propulsion device, can solve the problems of high cost, low precision, and inconvenient operation, so as to prevent abnormal flameout and improve control accuracy , the effect of convenient application

Active Publication Date: 2018-09-14
CHINA UNITED GAS TURBINE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a gas turbine combustion control device and method, which can automatically adjust the mixing degree of fuel and air in real time according to the actual situation of the gas turbine, and keep the NO x The emission is the lowest, which solves the problems of low precision and inconvenient operation due to the inability to perform automatic adjustment in the prior art and the need to manually adjust control parameters every once in a while, as well as the high cost of use and high maintenance cost due to the use of chemicals , The problem that the equipment is easy to be corroded

Method used

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  • Combustion control device and method for a gas turbine
  • Combustion control device and method for a gas turbine
  • Combustion control device and method for a gas turbine

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Embodiment 1

[0044] Such as figure 1 As shown, a gas turbine combustion control device provided by the embodiment of the present invention, the gas turbine includes a generator 1, a compressor 2, a multi-nozzle combustion chamber 3 and a turbine 4, and the control device includes a control module 10, a measuring device and a valve group, The measuring device includes a load sensor 6 arranged on the generator 1, a fuel temperature sensor 9 arranged on the gas fuel tank 5, and a temperature sensor 7 and a pressure sensor 8 arranged at the inlet of the compressor 2; the valve group includes at least two The parallel control valves 14 include five control valves 14 in this embodiment, the gas fuel tank 5 communicates with the combustion chamber 3 through the valve group, and the gas fuel tank 5 communicates with the valve group through a shut-off valve.

[0045] The quantity of load sensor 6, fuel temperature measuring sensor 9, temperature sensor 7 and pressure sensor 8 is one or more, and 2 ...

Embodiment 2

[0049] This embodiment provides a control method for a gas turbine combustion control device, including the following steps:

[0050] S1, the load value of the generator 4, the temperature value and the pressure value of the compressor 5 inlet measured by the load sensor 6, the temperature sensor 7 and the pressure sensor 8, and the conversion load value is calculated, and the calculation formula of the conversion load value is:

[0051]

[0052] Among them, PW is the generator load value, T0 is the temperature value of the compressor inlet, P0 is the pressure value of the compressor inlet, PW r is the converted load value;

[0053] The load value of the generator 4 is the maximum value of the motor load measurement value measured by one or more load sensors, and the temperature value and pressure value of the inlet of the compressor 5 are the compressed gas measured by one or more temperature sensors 8 and pressure sensors 9 respectively. The middle value of the temperatu...

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Abstract

The invention relates to a gas turbine combustion control device; a measuring device comprises a load sensor arranged on an electric generator, a fuel temperature measuring sensor arranged on a gas fuel tank, and a temperature sensor and a pressure sensor arranged at an inlet of a gas compressor; a valve group comprises at least two parallel-connection control valves; the load sensor, the fuel temperature measuring sensor, the temperature sensor and the pressure sensor transmit measured data to a control module, and the control module controls the valve group. A gas turbine combustion device control method provided by the invention can automatically real-timely adjust the mixing degree of a fuel and air according to gas turbine operating conditions, gas inlet temperature, gas inlet pressure, control valve characteristics, fuel temperature and other actual conditions, and keeps NOx emission of a gas turbine lowest. The gas turbine combustion control device and method provided by the invention can automatically real-timely adjust the mixing degree of the fuel and the air according to the actual conditions of the gas turbine, and keeps the NOx emission amount lowest.

Description

technical field [0001] The present invention relates to the technical field of gas turbines, in particular to a gas turbine combustion control device and method, and more particularly to a low-pollution gas turbine combustion control device and method for gas combustion. Background technique [0002] At present, the emission index of gas turbine generator set has become a strict index for new power plants of governments in various countries. How to reduce the combustion emission of gas turbine has become an important threshold for gas turbines to be put on the market. [0003] Diffusion combustion is usually used in standard combustion chambers, that is, fuel and air are mixed and burned with each other under the action of diffusion. This combustion method will make the temperature on the combustion flame surface very high, resulting in always high NOx emissions . To solve this problem, a variety of methods have been proposed in the prior art: one of them is to inject chemi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C9/28
Inventor 何皑刘月黄玉柱
Owner CHINA UNITED GAS TURBINE TECH CO LTD
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