关于地铁车站加压送风系统超压控制措施的探讨
Overpressure control measures of pressurized air supply system in underground railway stations
摘要：
根据现行防排烟标准中关于加压送风量的计算公式，对地铁车站楼梯间/前室加压送风量计算方法进行了分析并举例说明。从余压阀、旁通阀式余压控制系统、变速风机及压力传感器控制系统3个方面对加压送风系统超压控制进行了分析总结，结合工程实践给出了优化设计思路和对策。建议可将旁通阀式余压控制系统用于地铁工程的楼梯间和前室的超压控制。
Abstract：
According to the calculation formula of pressurized air supply in the current smoke control standards, analyses the calculation method of pressurized air supply in staircase and front room of a underground railway station with examples. Summarizes the overpressure control measures of pressurized air supply system from residual pressure valve, residual pressure control system with bypass valve, variable speed fan and pressure sensor control system. Combining with engineering practice, gives the optimization design ideas and countermeasures. Suggests that the residual pressure control system with bypass valves be used for overpressure control of staircases and front rooms in underground railway engineering.
Keywords:underground railway station, pressurized air supply system, overpressure, control measure, residual pressure valve, bypass valve, variable speed fan