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Faceted Housing For Axial Turbomachine Compressor

A technology for turbines and compressors, applied in the field of external shells, which can solve the problems of thermal stress and humidity reducing the mechanical strength of the shells, and achieve the effects of low production costs, improved precision, and reduced stress concentration

Active Publication Date: 2015-10-14
SAFRAN AERO BOOSTERS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal stress and humidity also significantly reduce the mechanical strength of the housing

Method used

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  • Faceted Housing For Axial Turbomachine Compressor
  • Faceted Housing For Axial Turbomachine Compressor
  • Faceted Housing For Axial Turbomachine Compressor

Examples

Experimental program
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Embodiment Construction

[0043] In the following description, the terms inner and outer refer to a position relative to the axis of rotation of the axial turbine. The axial direction extends along the axis of rotation, while the radial direction is perpendicular to said axial direction. The transverse direction extends around the circumference and may be perpendicular to the axis.

[0044] figure 1 is a simplified illustration of an axial turbine. In this particular case, it's a dual-flow turbojet. Turbojet engine 2 has a first compression stage known as low-pressure compression stage 4 , a second compression stage known as high-pressure compression stage 6 , a combustion chamber 8 , and one or more turbine stages 10 . In operation, the mechanical power of the turbine 10 is transmitted via the central shaft to the rotor 12 which moves the two compressors 4 and 6 .

[0045] The compressor has rows of rotor blades associated with rows of stator blades. The rotation of the rotor about its axis of ro...

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PUM

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Abstract

The invention relates to an external composite housing for a compressor of an axial turbomachine, the housing having a generally circular wall with a matrix and fiber reinforcement. The housing includes a circular wall with an internal surface having a continuous curve around the circumference of the wall. The wall includes flat facets that are flush with the internal curved surface of the wall. The facets are arranged in annular rows to receive annular rows of stator vanes. The facets are flat disks against which the vanes bear to optimize the orientation of the vanes, while reducing the concentrations of mechanical stresses at the platform / wall interfaces.

Description

technical field [0001] The invention relates to the outer casing of an axial turbine. More specifically, the present invention relates to a turbine housing comprising a circular wall having a continuous curve. The invention also relates to a turbomachine with a casing. Background technique [0002] Axial turbo compressors also typically have an outer casing to which the rows of blades are attached. They may also be attached in grooves, or with mounting bolts through the wall of the housing. This solution is particularly advantageous if the wall is thin in nature, measuring a few millimeters. Each blade has an attachment platform with a surface in contact with the inner surface of the housing wall. [0003] For reasons of mechanical strength, the blades and platforms can be made of metal, such as steel or titanium alloys. In order to lighten the enclosure, the walls are made of composite material. For optimum mass savings, the composite material may comprise a polymer r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/54F04D29/64F01D25/24
CPCF01D25/243F01D1/04F01D9/042F01D17/162F01D25/246Y02T50/60F04D29/563F01D25/24F04D29/52
Inventor K.豪斯A.杜里A.德克莱
Owner SAFRAN AERO BOOSTERS SA
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