双根敷设铜导线临界起火电流  

Research on copper wires' critical fire current under double laying method

作　　者：马少华[1] 王丽[1] 吴莹 

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870 [2]公安部沈阳消防研究所,辽宁沈阳110034

出　　处：《消防科学与技术》2014年第4期455-457,共3页Fire Science and Technology

基　　金：国家"十二五"科技支撑计划项目"电气火灾原因调查与防范关键技术研究"(2011BAK03B06-1-1)

摘　　要：利用ANSYS软件对常规1.5、2.5、4.0mm2三种规格的双根铜导线在横放及竖放敷设方式下的温度场进行数值模拟。通过建立导线过电流稳态时的热流体耦合模型,计算出导线通低倍过载电流下的绝缘皮表面温度,并将模拟结果与实验数据进行对比以修正参数,进而找到导线临界起火电流范围,为电气线路火灾提供科学依据。ANSYS software was used to simulate the temperature field of 1.5mm2,2.5mm2,4.0mm2 conventional copper wires under vertical and horizontal laying methods.Though establishing the thermal fluid coupling model of copper wires under over current in steady state,the paper calculated the temperature of the insulation surface in low overload current.The simulation results were compared with experimental data to correct parameters,and found the range of critical fire current, providing a scientific basis for electrical fire investigation.

关 键 词：铜导线 敷设方式 温度场 临界起火电流 火灾 

分 类 号：X928.7[环境科学与工程—安全科学] TM241[一般工业技术—材料科学与工程]