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Fusible load reduction structure for aero-engine and its low-pressure rotor bearing support

A low-pressure rotor and bearing support technology, applied in the direction of engine function, engine components, machine/engine, etc., can solve problems that cannot play a substantial role

Active Publication Date: 2021-06-29
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some patents for secondary fusing, the ball joint structure is used at the 2# bearing, such as patent documents US6491497B1 and US6783319B2. To fuse does not play a substantive role

Method used

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  • Fusible load reduction structure for aero-engine and its low-pressure rotor bearing support
  • Fusible load reduction structure for aero-engine and its low-pressure rotor bearing support
  • Fusible load reduction structure for aero-engine and its low-pressure rotor bearing support

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiment and accompanying drawing, set forth more details in the following description so as to fully understand the present invention, but the present invention can obviously be implemented in many other ways different from this description, Those skilled in the art can make similar promotions and deductions based on actual application situations without violating the connotation of the present invention, so the content of this specific embodiment should not limit the protection scope of the present invention.

[0025] It should be noted that the drawings are only examples, and they are not drawn according to the same scale, and should not be taken as limitations on the protection scope of the actual claims of the present invention.

[0026] As an embodiment of the present invention, the aeroengine is a turbofan engine, which includes a fan, a low-pressure compressor (boost stage), a hi...

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Abstract

The object of the present invention is to provide a low-pressure rotor bearing support fuse load-relief structure and an aero-engine including the same to improve the safety performance of the engine. According to one aspect of the present invention, the low-voltage rotor bearing support fuse load reduction structure includes a cone wall for installing the bearing and an intermediate case supporting the cone wall, wherein the large end of the cone wall is provided with a ring wall body, The ring wall body is provided with an inner spherical surface, and the intermediate casing is provided with an outer spherical surface corresponding to the inner spherical surface. The box is connected by a fuse structure, and the centers of the inner spherical surface and the outer spherical surface are located on the central axis of the engine.

Description

technical field [0001] The invention relates to a low-pressure rotor supporting structure of an aero-engine, in particular to a fusing and load-reducing structure therein. Background technique [0002] The low-pressure rotor of a typical turbofan engine generally includes a fan, a supercharging stage, a low-pressure turbine, and a rotating shaft. The rotating shaft is supported by multiple bearings to transmit the force and torque generated by the turbine to the supercharging stage and the fan. Under normal circumstances, the straight line where the center of gravity of each component such as the fan, booster stage, and low-pressure turbine is coincident with the axis of rotation. In order to ensure the critical speed margin, the low-pressure rotor system is generally supported by three bearings, of which 1# bearing and 2# bearing are located near the fan rotor, called fan bearings. The fan bearing connects the fan rotor to the intermediate casing of the stator through the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D21/04F01D25/16
CPCF01D21/045F01D25/162F05B2260/3011
Inventor 唐振南赵芝梅宋会英柴象海
Owner AECC COMML AIRCRAFT ENGINE CO LTD