Gas turbine and annular combustion chamber thereof

A technology of annular combustion chamber and gas turbine, applied in combustion chamber, continuous combustion chamber, combustion method, etc., can solve the problems of high NOx and low service life of nozzles

Inactive Publication Date: 2018-02-16
新奥能源动力科技(上海)有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In the prior art, the nozzles are usually installed in the flame tube. After the fuel is sprayed through the nozzle, it is mixed with the air in the flame tube. Due to the uneven mixing of the fuel and the air, the local temperature of the fuel is too high during combustion, and the output of NOx and The formation rate increases exponentially with the increase of combustion temperature, which makes the content of NOx in the combustion products higher; in addition, the service life of the nozzle is lower due to the influence of high temperature

Method used

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  • Gas turbine and annular combustion chamber thereof
  • Gas turbine and annular combustion chamber thereof
  • Gas turbine and annular combustion chamber thereof

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] An embodiment of the present invention provides an annular combustor of a gas turbine, the annular combustor includes an inner casing and an outer casing fitted on the inner casing, an annular flame cylinder is arranged between the inner casing and the outer casing, The gap between the flame cylinder and the inner casing and the outer casing forms an air channel for air circulation; also includes a plurality of premixing devices, w...

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Abstract

The invention relates to the field of gas turbines, and discloses an annular combustion chamber of a gas turbine and a gas turbine. The annular combustion chamber includes an inner casing and an outer casing fitted on the inner casing, and an annular combustion chamber is arranged between the inner casing and the outer casing. The flame cylinder, the gap between the flame cylinder and the inner casing and the outer casing is used for air circulation; it also includes a plurality of premixing devices distributed along the circumference, and each premixing device includes an air guide cylinder , the air guide tube is connected with the outer casing; the air guide tube is provided with a premixing pipe along the axial direction, and the premixing pipe is respectively connected with the air guide tube and the flame tube; the end of the air guide tube away from the outer casing is fixed There are nozzles, and the head of the nozzle extends into the premixing pipeline, and the premixing pipeline is used to deliver the mixture of gas and air to the flame tube.

Description

technical field [0001] The invention relates to the field of gas turbines, in particular to an annular combustion chamber of the gas turbine and the gas turbine. Background technique [0002] The micro gas turbine has the characteristics of compact structure, light weight, and low maintenance cost, and can be widely used in the field of distributed power generation. The annular combustor is a commonly used device in gas turbines, which can effectively shorten the overall size of the gas turbine. In the prior art, the nozzles are usually installed in the flame tube. After the fuel is sprayed through the nozzle, it is mixed with the air in the flame tube. Due to the uneven mixing of the fuel and the air, the local temperature of the fuel is too high during combustion, and the output of NOx and The formation rate increases exponentially with the increase of combustion temperature, which makes the content of NOx in the combustion products higher; in addition, the service life o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/52
CPCF23R3/52
Inventor 李成勤汪秋笑杜磊李冠星王威威周强民刘亚东
Owner 新奥能源动力科技(上海)有限公司
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