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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。
The building drainage system is a channel that connects the outdoor sewage drainage pipes with the indoor environment. The lack of capacity of the drainage pipe and the leakage water seal of the drainage system is one of the main reasons that the indoor environment is implicitly contaminated. Using the constant flow test method, the relationship between the pressure measured at the outlet and the pressure measured at the transverse branch pipe was explored. It was found that the pressure measured at the outlet of the wash basin was significantly higher than the pressure measured at the transverse branch The maximum positive, negative pressure and average force at the transverse branches can be estimated roughly by measuring the maximum positive and negative pressures and the average force at the basin. According to the test results, the reason for the initial determination of the restroom to be tested is found, which provides a reference for further research “on-site detection technology of existing building drainage system ”.