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Anti-dust device and aero-engine

A technology for aero-engines and dust-proof devices, which is applied in the directions of engine components, engine functions, machines/engines, etc., can solve the problems of adverse effects of the engine, easy to block pipelines, lack of dust-proof design, etc., and achieve the effect of easy maintenance and repair.

Active Publication Date: 2018-02-23
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing tip clearance control system lacks a dust-proof design. After long-term operation, pollutants (dust or particles) are likely to block the pipeline used for the above-mentioned impingement cooling (or heating), degrading the function of the clearance control system, and discharge into Dust and particulate matter in the core compartment can also adversely affect the engine

Method used

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  • Anti-dust device and aero-engine
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  • Anti-dust device and aero-engine

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Embodiment Construction

[0022] 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.

[0023] have to be aware of is, Figure 1 to Figure 5 All are for example only, and they are not drawn in accordance with the same scale conditions, and should not be taken as limitations on the protection scope of the actual claims of the present invention.

[0024] In the present invention, the axial direction refers to the direction of the axis line A-A of the aero-engine, th...

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Abstract

The invention provides an anti-dust device and an aero-engine. According to the anti-dust device and the aero-engine, a bleed air pipeline of the anti-dust device adopts two flowing pipelines which are forked from one position, one flowing pipeline is provided with a blind end, after bleed air is blocked by the blind end, pollutants (dust or particulate matter) contained in the bleed air cannot easily return along an original path like the bleed air under the influences of the inertia force and the gravity, therefore are retained in the flowing pipeline which is provided with the blind end, and thus separation of the pollutants and the bleed air is achieved. The anti-dust device, the aero-engine and an anti-dust method have the characteristics of being simple, efficient, easy to maintain and repair.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a dust-proof device and an aero-engine. Background technique [0002] Tip clearance is one of the key factors affecting the efficiency of a turbofan engine. For every 0.25mm reduction in turbine clearance, SFC (fuel consumption) can be reduced by 0.8%-1%. One of the main reasons affecting the blade tip clearance is the thermal deformation of the rotor and casing caused by temperature changes and the radial elongation of the rotor caused by the centrifugal force when the rotor rotates at high speed. The increase in the radial clearance between the rotor blade tip and the corresponding casing will result in a decrease in efficiency. According to the performance, structure and use characteristics of the turbofan engine, it is often necessary to take appropriate blade tip control measures to make the radial clearance of the blade tip as small as possible under some typical working condit...

Claims

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Application Information

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IPC IPC(8): F01D11/20
CPCF01D11/20F05D2260/607
Inventor 隋冬雨顾伟刘海标
Owner AECC COMML AIRCRAFT ENGINE CO LTD