某地铁车站制动电阻柜室超温分析
Brake resistance cabinet room over-temperature analysis in a underground railway station
摘要：
针对某地铁车站制动电阻柜室内烟感器受热变形现象进行了分析。通过发热量分析和通风计算发现，多次车辆制动时该房间顶部出现持续时间超过20 s的局部高温的情况，此现象是直接导致烟感器受热变形的原因。说明了常规自然通风计算是无法预计局部高温现象的，设计者应给予充分重视。
关键词：地铁车站,制动电阻柜,瞬时超温,烟感器受热变形,自然通风
Abstract：
Analyses the smoke-sensor-deformation phenomena in the brake resistance room of the underground railway station. Through the heat release analysis and ventilation calculation, finds that the high temperature sustained more than 20 seconds at the top of the room after several train brakes, which directly caused the smoke-sensor deformed. Indicates that the conventional natural ventilation calculation cannot predict the phenomenon of local high temperature in the room, which should be given full attention by designers.
Keywords:underground railway station, brake resistance cabinet, short-time over-temperature, smoke-sensor-deformation phenomena, natural ventilation