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Diffuser-rectifier connection for a centrifugal compressor

A technology of centrifugal compressors and guide vanes, which is applied in the field of compressors and can solve problems such as difficult disassembly and decomposition

Active Publication Date: 2012-10-03
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution does not add weight and keeps the gas flowing continuously, it is difficult to disassemble and disassemble without a suitable device, and the operator cannot do it if only using traditional tooling

Method used

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  • Diffuser-rectifier connection for a centrifugal compressor
  • Diffuser-rectifier connection for a centrifugal compressor
  • Diffuser-rectifier connection for a centrifugal compressor

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0026] refer to figure 1 , you can see the diffuser 1 at the outlet of the impeller of the centrifugal compressor (not shown in the figure), and the guide vane 2, which redirects the compressed air flow by about 120°, directing it in the direction of the combustion chamber flow, which is also not shown in the figure. The diffuser 1 is generally in the shape of a double ring disc, arranged radially, and the center of which is inserted into the impeller to form a compressed air collection pipe. The guide vane 2 is an annular guide member with two surfaces, located in the extension of the double diffuser disc and bent to redirect the air flow into the downstream of the engine ( figure 1 The right side is shown as the downstream side).

[0027] refer to figure 2 , we can see the details of the connecting device between diffuser 1 and guide vane 2. The downstream disk 3 of the diffuser comprises a flange 4 located outside the diffuser and parallel to the downstream disk 3, whi...

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PUM

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Abstract

The invention relates to an assembly consisting of a diffuser (1) and an airflow rectifier (2) at the outlet of a centrifugal compressor of a turbine engine, said diffuser being substantially in the shape of a radially positioned double annular disc, and said rectifier being a double toroidal part, arranged as an extension of the double disc of the diffuser and curved such as to divert the airflow in the downstream direction of the engine, characterised in that said rectifier is attached to said diffuser by a connection positioned immediately adjacent to the contact surface of the two parts and is removable using a standard tool, excluding any other supporting means.

Description

technical field [0001] The field of the invention is that of turbine engines, in particular the compressors of these turbine engines. Background technique [0002] An aero turbine engine usually consists of an assembled set of components including -- in the direction of air circulation -- one or more compressors, a combustor, one or more A turbine that drives the compressor via a drive shaft, and a nozzle including an outlet end into which combustion gases are injected to generate thrust, or a free turbine, used to recover energy from the gases to generate mechanical power. [0003] Typically, compressors are either axial, where air flows generally axially through the compressor from the inlet to the outlet, or centrifugal, where air enters axially and exits radially. In the case of a centrifugal compressor, air is collected at the blade outlet by a radial member called a diffuser and delivered to a second member called a guide vane where the compressed air flow is Guide v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44F04D29/62F01D9/02
CPCF01D25/246F04D29/624F04D29/441F01D9/04F05D2250/52
Inventor 杰克斯·马赛尔·亚瑟·布诺尔桑德拉·甘德洛特盖伊·维伊勒方德
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A