排水口处压力与横支管处压力的关系初探  

Discussion on Relationship between Pressures at Sink Traps and Horizontal Drainpipe

作　　者：张哲[1,2] 吴健铭 赵珍仪 高彬 杨鹏辉 

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400030 [2]国家住宅与居住环境工程技术研究中心,北京100044

出　　处：《中国给水排水》2017年第9期139-142,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07406002)

摘　　要：建筑排水系统是连接室外污水排水管道与室内环境的通道,排水系统存水弯和地漏水封保持能力不足是导致室内环境受到隐性污染的主要原因之一。运用定流量测试方法,探究在排水口处测得的压力与横支管处测得压力值之间的关系,发现脸盆排水口处测得的压力与横支管处测得的压力具有较明显的相关关系,通过在脸盆处测得的最大正、负压和平均圧力,可以粗略估算出横支管处最大正、负压和平均圧力。并根据测试结果,初步判断导致待测卫生间"返臭"的原因所在,为后续进一步研究"既有建筑排水系统现场检测技术"提供了参考依据。Building drainage system connects the indoor environment with outdoor drainage pipes. In the system, the inefficiency of sink traps and floor gully traps is one of the major causes of indoor envi- ronment pollution. In this study, the constant flow test method was used to explore the correlation be- tween pressures measured at the sink trap and the horizontal drainpipe, and significant relationship was found. The average pressure and the maximum positive and negative pressures measured at sink traps could be used to estimate the corresponding pressures at the horizontal drainpipe. Based on the test re- suits, preliminary causes were found for sewer smells, and could contribute to the further study of the ＂on-site detection technology for existing building drainage system＂.

关 键 词：存水弯 排水点 压力 定流量 返臭 

分 类 号：TU823[建筑科学]