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地铁车辆上的低压箱安装在车外底部,作为整车的中低压供电及其相关控制的枢纽,其内部涉及到众多的电气元器件,因此在设计中除合理的布局、连接布线外,还需要考虑箱体IP防护,同时电气设备在工作中的散热问题也要充分兼顾。文章通过对目前统型的低压箱在与外界各处密封接口型式、材料上的分析,同时充分考虑内部电气元件的散热问题,研究出一套满足IP65要求、高可靠性、散热性能良好的密封方案。
Subway vehicles on the low-pressure tank installed at the bottom of the car, as a vehicle in the low-voltage power supply and related control hub, which involves a large number of internal electrical components, so in addition to reasonable layout of the design, connecting the wiring Need to consider the box IP protection, while electrical equipment in the work of the heat problem must be fully taken into account. The article analyzes the type and material of the current low-pressure tank in the world and the sealing interface around the world, and fully considers the heat dissipation problem of the internal electrical components, and develops a set of seals that meet the requirements of IP65, high reliability and good heat dissipation Program.