摘要
在34层的超高层等比例试验塔上,采用定流量排水装置排水,考察伸顶通气系统在立管底部安装正压衰减器(PAPA)对系统最大正压的影响,并将其与横干管扩径时的最大正压衰减效果进行对比。对比研究伸顶通气系统和特殊单立管系统在不同负压缓解器安装工况下的系统压力分布情况,并通过分析伸顶通气系统和特殊单立管系统在不同负压缓解器安装工况下的系统压力分布情况,探究负压缓解器对系统负压的缓解效果。结果表明:排水立管系统底部设置PAPA对系统的最大正压衰减并不明显,效果不如横干管扩径;为达到较好的负压缓解效果,建议在伸顶通气系统每层横支管及系统顶部设置负压缓解器,在特殊单立管系统每层横支管设置负压缓解器,系统顶部设置通气帽。
This experiment used constant flow generator drain away water on 34-layer tower. Investigate the influence of Positive Air Pressure Attenuator installed at the base of vertical stack on the maximum positive pressure of the drainage systems, to explore the maximum positive pressure relief effect by the Positive Air Pressure Attenuator. Furthermore, the positive pressure relief effect between the Positive Air Pressure Attenuator and the enlargement of the horizontal branch was compared in this paper. It also investigate the pressure distribution of extended ventilation drainage system and special single stack drainage system on different negative pressure relief valve installation conditions, to explore the system pressure relief effect. The results show that: by installing Positive Air Pressure Attenuator at the base of vertical stack get little influence on the relief of the maximum positive pressure, which is even worse than the enlargement of the horizontal branch; To achieve a better effect of negative pressure relief, suggest that set up negative pressure relief valve on each floor's horizontal branch and set up air suction valve on the top of extended ventilation drainage system; Suggest that set up negative pressure relief valve on each floor's horizontal branch and set up vent cap on the top of special single stack drainage system.
出处
《住区》
2016年第6期52-57,共6页
Design Community
关键词
排水系统
定流量排水
正压衰减器
负压缓解器
drainage system, constant flow, positive air pressure attenuator, negative pressure relief valve