Fan rotor support system and its fan bearing support cone wall

A technology for fan bearings and support cones, which is applied to non-variable pumps, pump components, components of pumping devices for elastic fluids, etc., and can solve the problem of cone wall deformation, thin thickness, and 1# bearing support cone wall radius Large and other problems, to achieve the effect of reducing difficulty, reducing load, and saving production costs

Active Publication Date: 2022-01-28
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] However, the above scheme has the following defects: the 1# bearing support cone wall itself is a thin-walled part, its thickness is generally less than 5mm, and forging is generally used in engineering
For large bypass ratio commercial aero-engines, the machining accuracy requirements are very high; moreover, the 1# bearing support cone wall has a large radius and thin thickness, and it is very difficult to perform secondary machining on the forged support cone wall to form a thinned section. It is easy to cause deformation of the cone wall, and the final formed 1# bearing with thinned section supports the cone wall, and its roundness and machining errors are difficult to meet the design accuracy requirements

Method used

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  • Fan rotor support system and its fan bearing support cone wall
  • Fan rotor support system and its fan bearing support cone wall

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings. In the following description, more details are set forth in order to fully understand the present invention, but the present invention can obviously be implemented in a variety of 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 implementation manner should not limit the protection scope of the present invention.

[0024] For example, the description that the first feature described later in the description is formed on or above the second feature may include the embodiment in which the first and second features are formed through direct contact, and may also include an embodiment in which the first and second features are formed. Embodiments that form addition...

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Abstract

The invention provides a fan bearing supporting cone wall, which is a hollow rotary thin-walled part with a large end and a small end. The stress concentration part is formed at the position where the shrinkage turns to gradual expansion, and the stress concentration part is set as a fuse part to deal with the FBO event. The present invention also provides a fan rotor support system comprising the fan bearing support cone wall. The fan bearing support cone wall described above can provide an alternative to this fusing design using thinned sections.

Description

technical field [0001] The invention relates to a fan rotor support system, which can be used in an aero-engine, in particular to a fan bearing support cone wall. Background technique [0002] According to the requirements of airworthiness regulations such as FAR33.74 and FAR33.94, commercial aero engines must ensure that the occurrence of FBO (Fan Blade Off) events will not lead to catastrophic consequences. In order to ensure the safety of the aero-engine after the FBO incident, the traditional method is to increase the structural strength of the components on the power transmission path of the engine, such as the rotor support structure, load-bearing casing, installation system, etc., to increase its stress reserve margin , to ensure that key components will not fail under FBO loads. However, this will increase the weight of the engine, which is not conducive to the weight reduction design. [0003] In recent years, with the improvement of engine thrust, the diameter of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/056
CPCF04D29/056F04D29/0563
Inventor 赵芝梅唐振南宋会英郑李鹏
Owner AECC COMML AIRCRAFT ENGINE CO LTD
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