基于热引燃理论的火花试验装置电热效应本质安全性能研究  

Research on Intrinsic Safety Performance of IEC Spark Test Device Electrothermal Effect Based on Thermal Ignition Theory

作　　者：文玖龙 Wen Jiu-long(North China University of Technology,Beijing 100144)

机构地区：[1]北方工业大学电气与控制工程学院,北京100144

出　　处：《电气防爆》2023年第1期1-8,13,共9页Electric Explosion Protection

摘　　要：电路的本质安全性能在IEC火花试验装置上进行检测时会受到电路火花放电和装置热效应的双重影响,但装置的热效应对检测灵敏度的影响因温升较低而被忽略。研究的装置热效应包括火花放电致热以及钨丝电极在镉盘表面的摩擦热。基于热引燃理论,深入分析火花放电时间和距离对火花点燃能力的影响,提高本质安全性能判断的准确性,进而简化从火花放电微观机理来判断引燃气体混合物的方法。When the intrinsic safety performance of the circuit is tested on the IEC spark test device, it will be affected by the circuit spark discharge and the thermal effect of the device, but the thermal effect of device on sensitivity of detection is ignored because of the low temperature rise. Based on the thermal ignition theory, the influence of spark discharge time and distance on spark ignition ability is analyzed to improve the intrinsic safety performance, and then simplified the method of judging the gas mixture ignition from the microscopic mechanism of spark discharge.

关 键 词：辐射热成像 火花放电热效应 摩擦热效应 温度场 热引燃理论 

分 类 号：TM135[电气工程—电工理论与新技术]