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A method and device for controlling the mixing ratio of gas turbine fuel and air

A technology of gas turbine and control method, which is applied in the direction of gas turbine device, fuel control of turbine/propulsion device, turbine/propulsion fuel delivery system, etc., which can solve the problem of poor ignition reliability of combustion chamber, unreasonable configuration of fuel and air mixing ratio, and inability to real-time Match the fuel and air mixing ratio to achieve the effect of improving the configuration rationality and overcoming the poor ignition reliability of the combustion chamber

Active Publication Date: 2016-05-25
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In order to solve the problems of poor ignition reliability of the combustion chamber when the existing gas turbine is started, unreasonable configuration of the fuel and air mixing ratio during starting to idle, and inability to match the mixing ratio of fuel and air in real time, the present invention proposes a gas turbine fuel and air mixing A method and device for controlling the ratio, and its technical proposal includes a method for controlling the mixture ratio of fuel and air, a device for controlling the ratio of fuel and air, and a gas turbine using the method and device

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  • A method and device for controlling the mixing ratio of gas turbine fuel and air
  • A method and device for controlling the mixing ratio of gas turbine fuel and air
  • A method and device for controlling the mixing ratio of gas turbine fuel and air

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0032] Such as figure 1 As shown, the gas turbine fuel and air mixing ratio control device of the present invention includes a fuel metering and control unit A and a gas generator unit B.

[0033]The fuel metering and control unit A includes a fuel tank 1, a filter 10, a fuel pump 11, a pressure stabilizing valve 13, and a main fuel valve 14 connected in sequence through a fuel pipeline, wherein the outlet of the fuel pump 11 and the inlet of the stabilizing valve 13 There is also a fuel pipeline with a safety valve 12 between the inlet of the fuel pump 11 and the inlet of the pressure stabilizing valve 13; the main fuel valve 14 passes through the parallel main fuel control valve 8 and auxiliary fuel control valve 9 communicates with the oil inlet of ...

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Abstract

The invention relates to a method for controlling the fuel-to-air ratio of a gas turbine, and an apparatus thereof. The apparatus adopts the fuel-to-air ratio to control the ignition of the gas turbine, the fuel-to-air ratio is optimized in real time below an idle rotating speed, the apparatus comprises a liquid fuel mass flow meter, an air volume flow meter, a pressure sensor and a temperature sensor, the gas turbine runs to a combustion chamber ignition time, and a gas turbine controller calculates the standard gas mass flow according to the inlet air flow rate, pressure and temperature, detects the gas turbine rotating speed, and adjusts the fuel supply to realize the stating of an ignition program when the fuel-to-air equivalence ratio equals to 1; and after the success of ignition, the gas turbine controller detects and adjusts the fuel-to-air equivalence ratio in real time in order to realize the real-time optimal fuel and air mixing.

Description

technical field [0001] The invention belongs to the field of gas turbine control, and mainly relates to a method and device for controlling the fuel-air mixing ratio of the gas turbine, which are used for controlling the fuel-air mixing ratio in the combustion chamber of the gas turbine before ignition and after successful ignition during the start-up process of the gas turbine. Background technique [0002] The ignition reliability of the combustor when the gas turbine is started is mainly determined by factors such as the fuel-air mixing ratio and air flow rate. However, the current fuel-air mixing control devices and methods in the gas turbine combustor are difficult to accurately match the fuel-air mixing ratio, let alone according to The real-time detection, adjustment and matching of the fuel-air mixing ratio in the combustion chamber under different working conditions cannot achieve the goal of real-time optimal fuel-air mixing, resulting in poor ignition reliability o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C7/22F02C9/28F02C3/04
Inventor 曾德堂谭春青高庆袁怡祥陈海生李枚媛
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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