Cleaning method for airflow channel of turbofan engine

A turbofan engine and airflow channel technology, which is applied to engine components, components of a pumping device for elastic fluids, machines/engines, etc. , Improve performance and prevent corrosion

Active Publication Date: 2022-05-13
成都航利装备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cleaning method for the air flow channel of a turbofan engine, so as to solve the technical problem that the turbofan engine cannot be cleaned in situ in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A cleaning method for a turbofan engine air flow channel, comprising the steps of:

[0053] S1. Determine the cleaning mode adopted

[0054] The timing of cleaning in the desalination cleaning mode is:

[0055] ①Continuous or frequent use in a salt spray environment, after 100 hours of flight, perform a desalination cleaning;

[0056] ②Long-term stay in areas with high concentration of salt spray: during strong wind and monsoon seasons, perform desalination cleaning once a month; during non-strong wind and monsoon seasons, perform desalination cleaning once every two months;

[0057] ③Salt core deposits on the surface of compressor blades, turbine disks, and airflow channels, and obvious pollution spots appear, and desalination cleaning is carried out;

[0058] The timing of cleaning in the performance recovery cleaning mode is:

[0059] ① When the engine has the following phenomena during use, if the effect is not obvious after mechanical adjustment, use the perform...

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PUM

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Abstract

The invention discloses a cleaning method for an airflow channel of a turbofan engine. The cleaning comprises a desalting cleaning mode and a performance recovery cleaning mode, and the cleaning work comprises the steps of judging the cleaning time and selecting the cleaning mode; preparation before cleaning, cleaning equipment installation, cleaning solution preparation and cleaning operation; and judging the basis of the cleaning effect. The in-situ cleaning method is suitable for the installation state of the turbofan engine assembled on a fighter, in-situ cleaning is conducted on the airflow channel of the engine through the in-situ cleaning method and developed special cleaning equipment, the use reliability of the turbofan engine is guaranteed, the use performance is remarkably improved, the number of times for returning the engine to a factory to be overhauled is reduced, and the property loss of returning the engine to the factory to be overhauled is reduced; and flight safety is ensured.

Description

technical field [0001] The invention belongs to the field of engine cleaning, and in particular relates to a cleaning method for a turbofan engine air flow channel of a domestic aircraft. Background technique [0002] At present, the domestically produced turbofan engine is gradually replacing the similar turbofan engine made in Russia. It is equipped with the main fighters of our army and used in the corrosion environment of the marine environment. risk of injury. After long-term use, core components such as compressor blades, turbine blades, and casing surfaces in the airflow channel will adhere to dust, oil, and other dirt, which will affect the airflow characteristics of the engine, reduce thrust, and often generate high-pressure adjustable stator blade angle adjustment cards Hysteresis, high and low pressure rotor slip, etc. reduce the tactical performance of the equipment and affect flight safety. [0003] The cleaning of turbofan engine airflow passages has attracte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/70F01D25/00B08B9/032
CPCF04D29/701F04D29/705F01D25/002B08B9/0328
Inventor 李整建卢鉴丁振国李萌陈杰马安权王军罗利明郑衎
Owner 成都航利装备科技有限公司
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