通气立管管径对副通气立管排水系统通水能力的影响  

Influence of Vent Pipe Diameter on Water Capacity of Drainage System with Auxiliary Vent Pipe

作　　者：尹浩然 官钰希[1] 任少龙 吴克建 方正[1] YIN Hao-ran;GUAN Yu-xi;REN Shao-long;WU Ke-jian;FANG Zheng(School of Civil Engineering,Wuhan University,Wuhan 430072,China;National Building Drainage System Technology Center Laboratory,Shanxi Xuanshi Industrial Group Co.Ltd.,Gaoping 048400,China)

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]山西泫氏实业集团有限公司全国建筑排水管道系统技术中心实验室,山西高平048400

出　　处：《中国给水排水》2021年第11期40-45,共6页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51978526);中央高校基本科研业务费专项资金资助项目(2042021kf0059)。

摘　　要：对副通气立管排水系统进行了不同通气立管管径(DN100、DN75、DN50)的对比试验,分别测定系统的最大通水能力,并观测了各个楼层的压力波动、水封损失、排水系统通气量变化。结果表明,通气立管管径越大,副通气立管排水系统的通水能力越强,3种管径下系统的最大排水流量分别为17.0、14.0、7.5 L/s,说明副通气立管排水系统具有较大的通水能力;当通气立管管径为DN75时,副通气立管排水系统就可以满足《建筑给水排水设计标准》(GB 50015—2019)中高层建筑最大排水流量10 L/s的要求。The performance of drainage system with auxiliary vent pipe was compared under conditions of different vent pipe diameters(DN100,DN75 and DN50),the maximum water capacity of the system was measured respectively,and the pressure fluctuation,water seal loss and variation in ventilation of the drainage system were observed in each floor.Bigger diameter of the vent pipe would achieve greater water capacity of the drainage system with auxiliary vent pipe,in which the maximum flow rates of the three systems were 17.0 L/s,14.0 L/s and 7.5 L/s,respectively.The results indicated that the drainage system with auxiliary vent pipe had a large drainage capacity.When the diameter of the vent pipe was DN75,the drainage system with auxiliary vent pipe could meet the requirement of the maximum flow rate of 10 L/s for medium and high-rise buildings in the Standard for Design of Building Water Supply and Drainage(GB 50015-2019).

关 键 词：副通气立管 环形通气 通气立管管径 通水能力 压力极限 水封损失 

分 类 号：TU992[建筑科学—市政工程]