Multi-field coupling insulation aging test device for cable in aircraft power supply system

Abstract

The invention provides a multi-field coupling insulation aging test device for a cable in an aircraft power supply system,and belongs to the technical field of insulation aging life testing of cablesin the airborne power supply system. The multi-field coupling insulation aging test device is composed of a cable bending stress loader,a heat stress loading programmed type high-low temperature alternating test box,position-variable testing cable clamps,a pulling stress loading device,an insulation resistance measuring instrument,a force sensor,an electrical controller and an upper computer PC. The heat stress loading programmed type high-low temperature alternating test box is connected with a base plate,the position-variable testing cable clamps are connected with the pulling stress loadingdevice,the cable bending stress loader is tensioned by a testing cable in the heat stress loading programmed type high-low temperature alternating test box,the insulation resistance measuring instrument is connected with a pulling stress loading device installation plate,and the position-variable testing cable clamps are connected with the pulling stress loading device installation plate and thebase plate respectively. The multi-field coupling insulation aging test device is used for assessing the wire and cable insulation life of homemade aeronautic equipment,and then it is ensured that theairborne power supply system runs normally.

Description

technical field [0001] The invention relates to an aircraft power supply system cable multi-field coupling insulation aging test device, which is used to evaluate the insulation life of domestically produced aviation equipment wires and cables, thereby ensuring the reliable operation of the airborne power supply system, and belongs to the airborne power supply system cable insulation aging life testing technology field. Background technique [0002] With the rapid development of modern aviation technology, the overall electrical automation level of aircraft has been significantly improved, and various advanced airborne equipment has been introduced. At present, the vast majority of advanced airborne equipment adopts the electric energy working mode, and various transmission cables are mainly responsible for the transmission and control of electric energy between different electrical equipment in the distribution network. As a highly integrated aircraft, various power distri...

AI Technical Summary

Problems solved by technology

According to the statistical data of our country, in 2002, among the 10 A320 aircraft managed by the Shenzhen maintenance plant of my country Southern Airlines, there were multiple cable failures. flight operations

Therefore, the gradual aging or even damage of the insulating material of the cable is a major hidden danger that threatens the flight safety of the aircraft

[0003] The evaluation of aviation cable life model and the study of life prediction methods need to be based on aging failure data. At present, domestic wires and cables used in aircraft power supply systems lack effective service life prediction methods. Even if there are a small number of test devices, they are mainly limited to a single influencing factor. Under the cable aging test, it cannot objectively and comprehensively reflect the aging process of the wires and cables in the distribution network of the aircraft power supply system under actual working conditions.

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