Experimental device and experimental method for measuring combustion characteristics of cable in oxygen-rich environment

Abstract

The invention relates to an experimental device and an experimental method for measuring the combustion characteristics of a cable in an oxygen-rich environment. The device includes a shell, an air intake system, an exhaust system, a cable supporting system, an ignition system, a combustion parameter test system, an oxygen monitoring system and a data acquisition system. The air intake system is mounted at the bottom of the shell, the exhaust system is mounted at the top of the shell, the cable supporting system is fixed on the shell, a crucible is used for containing an experimental material,the ignition system heats the material by a heating wire arranged on the inner wall of the crucible, the combustion parameter test system includes a radiation heat flow meter, a thermocouple and a smoke component sensor, the oxygen monitoring system controls an oxygen sensor by a servo, and monitors the oxygen concentration near the crucible, and the data acquisition system comprises a computer,a multifunctional data acquisition card and an analog-to-digital conversion module, and is used for collecting data of all sensors and sending out a control instruction. The device has a simple structure and a strong operability, and is a simple and easily-operated experimental device for studying the combustion characteristics of the cable in the oxygen-rich environment, and a test result obtained by the method and the device is accurate and has a good repeatability.

Description

technical field [0001] The invention relates to the field of fire combustion research, in particular to an experimental device and an experimental method for measuring the combustion characteristics of cables in an oxygen-enriched environment. Background technique [0002] With the development of the economy and the improvement of living standards, the level of electrification in production and life has increased, and electrical fire accidents have also increased. According to the "China Fire Statistical Yearbook", in the past ten years, electrical fires have ranked first among all fire causes, and electrical fires caused by wires and cables account for more than 50% of the annual electrical fires, ranking first among all types of fires, causing casualties and Property damage was also the most serious. [0003] According to Xu Xiaonan et al.'s "Wire and Cable Fire and Flame Retardant Treatment", the insulation and sheath materials of most wires and cables are composed of va...

AI Technical Summary

Problems solved by technology

However, for the research on the combustion characteristics of cable fires in an oxygen-enriched environment, there are few relevant literatures at home and abroad, and the relevant experimental devices are also very scarce.

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