广州地铁车辆的外挂密闭门改造

Technical Transformation of External Sealing Door for Guangzhou Metro

广州地铁A2、A3型车辆使用的是国外生产的外挂车门,其密封性较差,车厢内与隧道间易产生窜风,噪声大且舒适性差。外挂密闭门改造是在外挂门的基础上增加12mm的向车体内侧塞拉的行程,从而使车门在关闭时,门扇密封胶条和门框紧密贴合,保证了车辆的密封性能。车门改造后,客室内噪声降低2.0dB(A)以上,提高了乘客乘车的舒适性,也间接降低了客室空调制冷能耗。

The external doors used for A2 and A3 type vehicles in Guangzhou metro are made in a foreign country, which have the defects such as great noise and poor comfort caused by air leakage from the doors. The transformation of the external doors is to add 12mm inward sliding distance on the basis of the external doors, thus a good fitting between the door sealing strip and the doorframe will be achieved. After the technical transformation, the external sealing doors Improved the sealing performance and reduced the noise at least 2.0 dB （A）, comequently the comfort degree of the passengers is enhanced, the energy consumption for the air-conditioning compartments has also been improved.