建筑排水系统水封多维安全性参数试验研究

Experimental study on multi-dimensional parameters of water seal safety in building drainage system

建筑排水系统安全事关建筑室内居住环境的舒适性与健康性。在当前主要关注水封高度的基础上,进一步试验探究了不同水封比、正/负压持续时间以及存水弯位置对自虹吸损失影响等关系到水封安全的重要参数。结果表明:相同压力下负压持续时间影响水封损失,持续60 s的水封损失大于持续5 s的水封损失;管内负压区采用大于1的水封比、正压区采用小于1的水封比有利于减少水封损失;器具排水管水封安装高度影响水封自虹吸损失,需引起关注。

The safety of building drainage system is related to the safety and comfort of the in-door environment of the building.In addition to the current concern on the parameter of water seal height,this paper further investigated the important parameters related to the water seal safety,such as the influence of different water seal ratio and the setting position of water seal on the self-siphon loss.The results showed that the water seal loss sustained for 5s under the same pressure was less than that sustained for 60s.The water sealing ratio greater than 1 in the negative pressure section and less than 1 in the positive pressure section of the pipe can reduce the water sealing loss.The installation height of drainage water seal affects the siphon loss of water seal,which should be paid more attention.