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Method for refitting retired aircraft into engine, and engine refitted by such method

A technology for decommissioning aircraft and gas turbines, applied in the direction of machines/engines, mechanical equipment, gas turbines, etc., can solve the problems of low-pressure compressor efficiency reduction, gas turbine power reduction, etc., to improve power, increase outlet pressure, and workload. small effect

Active Publication Date: 2012-07-25
XIAMEN ZHONGGUANNENG GAS TURBINE TECH CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

When the top with a large torsion angle is cut off, although the external air is removed, the efficiency of the low-pressure compressor is greatly reduced, that is, the power of the modified gas turbine is greatly reduced

Method used

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  • Method for refitting retired aircraft into engine, and engine refitted by such method
  • Method for refitting retired aircraft into engine, and engine refitted by such method
  • Method for refitting retired aircraft into engine, and engine refitted by such method

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Embodiment Construction

[0014] The method of taking out the outer duct gas from the tail of the outer duct is: (see image 3 ) Firstly, on a circumference of the outer wall of the tail of the outer duct 6, a number of outer duct gas outlets 61 are opened; secondly, a gas turbine outer culvert leading gas collection ring 7 (hereinafter referred to as Tail gas collection ring), the tail gas collection ring is a round tube surrounded by a closed ring, the diameter of the tail gas collection ring (ring) is larger than the diameter of the tail of the outer duct, on the ring wall of the inner diameter of the tail gas collection ring Open a plurality of air inlets 71 of the tail gas collection ring, and the quantity and radial position of the air outlet of the outer duct and the air inlet of the tail gas collection ring correspond one by one. A tail gas outlet pipe 10 is installed between them, and all tail gas outlet pipes are radially distributed, and the outer duct gas is taken into the tail gas collecti...

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Abstract

The invention provides a method for refitting a retired aircraft into an engine, and the engine refitted by the method; the invention aims to solve the problem that the power of the top-removed engine is greatly reduced as the current method for refitting a turbofan engine into a ground engine is to cut off tops of all vanes on a low-pressure compressor. The method is characterized in that: the pressurized air in an external culvert of the turbofan engine is used completely. The technical scheme is as follows: the external culvert air is taken out from the tail part of the external culvert, and then sequentially transferred into a gas injector and a gas inlet of the low-pressure compressor through a gas transfer pipeline. The method for refitting the retired aircraft into the engine and the engine refitted by the method have the following beneficial effects: the overall pressure ratio is enhanced, so that the efficiency of the engine is improved; external air is synchronously inhaled at the gas inlet of the low-pressure compressor, the intake amount is greatly increased, thus the working capacity of the engine is enhanced.

Description

technical field [0001] The invention relates to a method for converting a decommissioned aviation turbofan engine into a ground gas turbine (hereinafter referred to as a gas turbine), and the gas turbine converted by the method. The decommissioned aircraft in the present invention refers to decommissioned aviation turbofan engines. Background technique [0002] In order to ensure safety, aero-engines will be decommissioned when they are used to 10-20% of their service life. Therefore, changing decommissioned aero-engines into gas turbines is a very meaningful work that has attracted great attention from all countries. A turbofan aircraft includes a low-pressure compressor, an external duct, and an internal duct. The current method of converting a turbofan aircraft into a gas turbine is to cut all the blades on the low-pressure compressor in order to remove the external air of the turbofan aircraft. top handle. Each blade has a large twist angle at the top and a small twist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K3/00F02C3/32
Inventor 王晓凌高艳杰刘兴忠
Owner XIAMEN ZHONGGUANNENG GAS TURBINE TECH CO LTD
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