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Gas turbine combustor capable of achieving diffusion and premixed combustion dual-mode switching

A gas turbine, premixed combustion technology, used in combustion chambers, combustion methods, combustion equipment, etc.

Active Publication Date: 2021-09-07
HANGZHOU TURBINE POWER GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a gas turbine combustor capable of dual-mode conversion of diffusion and premixed combustion, which has the advantage of easy switching of combustion states and solves the problems in the prior art

Method used

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  • Gas turbine combustor capable of achieving diffusion and premixed combustion dual-mode switching
  • Gas turbine combustor capable of achieving diffusion and premixed combustion dual-mode switching
  • Gas turbine combustor capable of achieving diffusion and premixed combustion dual-mode switching

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Embodiment 1

[0029] see Figure 1-8, a gas turbine combustor capable of dual-mode conversion of diffusion and premixed combustion, including a housing 23 and a fuel supply source 9, the upper end of the housing 23 is circumferentially symmetrically connected with a main fuel nozzle 18, and the upper end of the main fuel nozzle 18 passes through the main fuel pipeline 13 is connected to the fuel supply source 9, the input end of the duty fuel chamber 36 is connected to the fuel supply source 9 through the duty fuel pipeline 12, and the main fuel regulating valve 10 is respectively installed on the main fuel pipeline 13 and the duty fuel pipeline 12 and the on-duty fuel regulating valve 11, the fuel from the fuel supply source 9 is sent into the burner for combustion through the main fuel regulating valve 10, the duty fuel regulating valve 11, the main fuel pipeline 13 and the duty fuel pipeline 12 respectively, and the main fuel nozzle 18 The upper end is connected with a fuel supply source...

Embodiment 2

[0032] see Figure 9-12 , in this embodiment, the core body 14 of the adjustable conversion device is provided with a core body diffused fuel channel and a core body center diffused air channel, respectively replacing the core body diffused fuel channel 39 and the core body premixed fuel channel 37, correspondingly , the bottom of the adjustable conversion device housing 15 is provided with a corresponding housing center diffusion fuel outlet and a housing center diffusion air outlet, and its side is provided with a corresponding housing center diffusion air inlet.

[0033] Working process: In the full diffusion mode, the fuel enters from the on-duty fuel chamber 36 through the core diffuser fuel annular inlet 38, flows through the core diffuser fuel channel, the shell center diffuser fuel exit hole, and finally enters the corresponding diffuser nozzle 29 on duty. The diffusion injection hole chamber 48 is injected from the diffusion fuel injection hole 46 to form diffusion co...

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Abstract

The invention discloses a gas turbine combustor capable of achieving diffusion and premixed combustion dual-mode switching. The gas turbine combustor comprises a shell and a fuel supply source; main fuel nozzles are symmetrically connected to the upper end of the shell in the circumferential direction; the upper ends of the main fuel nozzles are connected with the fuel supply source through pipelines; a pipe seat is connected to the position, between the main fuel nozzles, of the shell; an on-duty fuel cavity is formed in the pipe seat; and an adjustable switching device shell is mounted on the lower surface of the pipe seat. According to the gas turbine combustor capable of achieving diffusion and premixed combustion dual-mode switching, the combustion state of an on-duty nozzle can be switched between diffusion combustion and premixed combustion or between diffusion combustion and partial premixed combustion, the switching achieving manner is very simple, and only an adjustable switching device core needs to be rotated to the designated position; and according to a conventional scheme, multiple fuel pipelines need to be arranged for achieving switching of the combustion state, and each pipeline needs to be provided with an independent valve for control.

Description

technical field [0001] The invention relates to the technical field of gas turbine burners, in particular to a gas turbine burner capable of dual-mode conversion of diffusion and premixed combustion. Background technique [0002] With the increasingly stringent requirements for nitrogen oxide (NOX) emissions from gas turbines at home and abroad in recent years, the lean-burn premixed combustion method (Dry Low Emission (Dry Low Emission) combustion method) has received more attention. The fuel is pre-mixed with air, and then the mixture is burned, and the final combustion temperature is controlled by controlling the equivalence ratio of the fuel in the mixture, thereby suppressing the emission of NOX that is harmful to the environment. [0003] Although premixed combustion has the advantage of low pollution emissions, it also faces the disadvantage of unstable combustion and easy thermoacoustic oscillation, especially in low-load conditions of gas turbines, which may easily ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28F23R3/42
CPCF23R3/286F23R3/42
Inventor 彭志胜臧鹏屠瑶迟鸿伟傅燕妮衡思江张宇明任占洋隋永枫
Owner HANGZHOU TURBINE POWER GRP
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