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Method for manufacturing flame tube for turbomachine

A flame tube and turbine technology, applied in the field of flame tubes, can solve problems such as expensive

Pending Publication Date: 2022-01-11
赛峰直升机引擎公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, such modifications require the replacement of stamping dies, which is particularly expensive

Method used

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  • Method for manufacturing flame tube for turbomachine
  • Method for manufacturing flame tube for turbomachine
  • Method for manufacturing flame tube for turbomachine

Examples

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Effect test

Embodiment Construction

[0069] figure 1 and figure 2 A flame tube 1 obtained using the manufacturing method according to the present invention is shown. The flame tube 1 is annular and extends around the axis X. The flame tube 1 is made in one piece and comprises a radially inner annular wall 2 and a radially outer annular wall 3 connected to each other by an end or top wall 4 , the inner wall 2 , the outer wall 3 and the end wall 4 defining an inner volume 5 .

[0070] A part of the end wall 4 forms a double wall 6 comprising a first part 7 and a second part 8 connected to each other and spaced apart from each other to define a flow channel 9 for the cooling air flow to the inner volume 5 .

[0071] The second part 8 of the double wall 6 is located on the side of the inner volume 5 of the flame tube 1 . The second part 8 comprises a first radially outer end connected to the first part 7 of the double wall 6 and a second radially inner free end 8a where the cooling air flow channel 9 opens into s...

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Abstract

The invention relates to a method for manufacturing a flame tube (1) for a turbomachine. The flame tube (1) extends around an axis (X) and comprises a radially inner annular wall (2) and a radially outer annular wall (3), connected to one another by an end wall (4) or head wall, and the inner wall (2), the outer wall (3) and the end wall (4) define an internal space (5). The method is characterized in that at least one portion of the end wall (4) forms a double wall (6) comprising a first portion (7) and a second portion (8) connected to one another and spaced apart from one another so as to define a flow channel (9) for a cooling air flow opening into the internal space (5), the flow channel (9) comprises at least one air inlet opening (13), the first and second portions (7, 8) of the double wall (6) are connected by connecting areas or bridges (10) extending into the flow channel of the cooling air stream (9), and the flame tube (1) is produced by additive manufacturing.

Description

technical field [0001] The present invention relates to a method of manufacturing a flame tube for use in turbines, in particular for helicopters or aircraft. Background technique [0002] A turbine typically includes a fan, one or more compressor stages (eg, a low pressure compressor and a high pressure compressor), a combustor, one or more turbine stages (eg, a high pressure turbine), from upstream to downstream in the direction of gas flow within the turbine. and low pressure turbine) and exhaust nozzles. [0003] The combustion chamber is defined by coaxial inner and outer rotating casings connected upstream to the annular casing at the bottom of the chamber. The outer casing of the chamber is fixed to the outer casing of the turbine and the inner casing of the chamber is fixed to the inner casing or connected to the outer casing. [0004] The combustion chamber also includes a flame tube or furnace, which is where the gas burns. [0005] The flame tube can be annular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/00F23R3/04
CPCF23R3/005F23R3/04F23R2900/00018F23R2900/03043Y02P10/25B33Y10/00B23K26/342B23K2101/001B22F10/28B22F2301/15F23R3/44
Inventor 斯泰凡·拉维格诺泰古伊劳姆·西埃里·科廷金-保尔·迪迪埃·奥特雷特梅赫迪·代利巴托马斯·塞巴斯蒂恩·亚历山大·格雷西尼库拉斯·罗兰德·久伊·萨瓦里
Owner 赛峰直升机引擎公司