建筑排水系统内部的水流运动与室内环境关系的研究

Research on Relation Between Water Flow Movement in Drainage System and Indoor Environment

研究目的:研究建筑排水系统内部水流和气流的运动规律,提出解决排水系统气体内溢的方法和措施。研究方法:结合对单一横支管排水,立管上端通大气,下端经排水横管排入直通大气的检查井的排水系统为实验室研究模型,分析建筑内部水流与气流运动引起的压力变化。研究结果:建筑排水系统内水流、气流的复杂运动会引起系统内压力的变化,而压力变化是引发排水系统气体内溢的关键。研究结论:建筑排水系统内水流和气流的运动,会引起排水系统内部压力的变化,而压力的变化是引起水封破坏,有害气体进入排水系统内部的根本原因。设置专用通气立管排水系统、排水管道的合理布置和敷设、选择高质量的卫生器具、合理采用排水管材和保证排水管道的施工质量、科学地使用排水系统,是解决居住建筑排水系统气体内溢的有效措施。

Research purposes： The purposes were to make research on the movement laws of water flow and airflow in drainage system for building and put forward the method and measure for solving the problem of inner spilling of drainage system.Research methods：Based on taking the drainage system with single horizontal branch pipe to drain water, the top of vertical pipe to lead air and the bottom of the pipe going to inspection shaft through horizontal drainage pipe as lab research model, the analysis was made for the pressure change caused by movements of water flow and airflow within building.Research results：The complicated movements of water flow and airflow in drainage system for building could make change of pressure in the system and the change of pressure was the key factor for causing air inner spilling in drainage system.Research conclusions：The movements of water flow and airflow in drainage system for building could make change of pressure in the system and change of pressure was the basic cause for damage of water block and harmful gas going into room. It was an effective way for solving the problem of air inner spilling in drainage system for residential building to equip drainage system with special vertical drainage pipe, rationally lay out drainage pipe, use high quality sanitary appliance and piping materials, ensure the construction quality and rationally use drainage system.