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Method and structure for cooling flame tube of combustor

A technology of cooling structure and flame tube, which is applied in combustion methods, combustion chambers, continuous combustion chambers, etc., can solve the problems of difficulty in research and development, difficulty in meeting use requirements, etc., and achieve a good cooling effect.

Inactive Publication Date: 2015-11-11
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The temperature at the outlet of the combustion chamber of modern advanced gas turbine engines is constantly increasing, and most of the air at the outlet of the compressor is used for combustion and cooling of the high-pressure turbine. Higher temperature materials are more difficult to develop and cannot meet the needs of use

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  • Method and structure for cooling flame tube of combustor
  • Method and structure for cooling flame tube of combustor
  • Method and structure for cooling flame tube of combustor

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing:

[0027] Such as figure 1 As shown, a method for cooling the flame tube of the combustion chamber is to add a radiator 2 in the low-temperature environment outside the flame tube 1. When the flame tube 1 is working, the coolant is between the cavity 3 inside the wall of the flame tube 1 and the radiator 2 The heat of the wall of the flame tube 1 is transferred to the external low-temperature environment to protect the flame tube 1 from being burned out.

[0028] The present invention uses coolant and heat exchanger to cool the flame cylinder 1, without using compressor outlet air for cooling or using expensive new materials, and using existing superalloys to meet working conditions.

[0029] When the flame tube 1 is working, the low-temperature coolant flows into the cavity 3 of the wall of the flame tube 1, and convective heat exchange occurs with the wall of the flame tube...

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Abstract

The invention discloses a method for cooling a flame tube of a combustor. A heat dissipater (2) is additionally arranged in an external low-temperature environment of the flame tube (1). When the flame tube (1) works, a cooling agent circulates between a cavity (3) in the wall of the flame tube (1) and the heat dissipater (2) to transfer heat of the wall of the flame tube (1) to the external low-temperature environment. The invention further discloses a flame tube cooling structure adopting the method. The method and the structure have the advantages that the cooling agent and a heat exchanger are adopted for cooling the flame tube, air of an outlet of an air compressor does not need to be used for cooling the flame tube, and the saved air can be used for increasing the temperature of the combustor or cooling a turbine part; the cooling effect is good, and therefore an existing high-temperature alloy can be adopted without using a new high-cost material.

Description

technical field [0001] The invention relates to the design field of an aero-engine combustor, in particular to a method and structure for cooling a combustor flame tube. Background technique [0002] In the prior art, in order to make the flame tube work reliably in high temperature environment, the method of improving the temperature resistance of the material of the flame tube and making full use of the outlet air of the compressor to cool it is mainly adopted. Some advanced high-temperature-resistant metal materials can work at high temperatures above 1200°C, while new ceramic-based high-temperature-resistant materials can withstand high temperatures above 1500°C. The cooling methods with higher air utilization rate include film cooling, divergent cooling, impingement cooling and other forms. [0003] The temperature at the outlet of the combustion chamber of modern advanced gas turbine engines is constantly increasing, and most of the air at the outlet of the compressor...

Claims

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Application Information

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IPC IPC(8): F23R3/42
Inventor 曹阳王少波柴昕
Owner AECC SHENYANG ENGINE RES INST
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