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通过对工程实践中防烟、排烟系统常见问题的分析,从设计、施工、安装等方面提出了解决方法。指出机械加压送风井、排烟井内不得凸入梁、柱、多叶送风口、多叶排烟口等;风道竖井内壁应光滑,严密不漏风,洞口应采取防火封堵;排烟系统较大时应计算风道的漏风量、排烟阀(口)的漏风量,以满足排烟量的要求;设计说明中应明确风阀(口)的功能、控制要求。
Through the analysis of the common problems of smoke and smoke exhaust system in engineering practice, some solutions are put forward from the aspects of design, construction and installation. It is pointed out that the mechanical pressurization air supply well shall not protrude into the smoke exhaust well, such as beams, columns, multilobate air vents, multi-leaf exhaust vents, etc. The inner wall of the air duct shaft shall be smooth and tightly air- Should be calculated when the system air duct leakage, exhaust valve (port) of the air leakage to meet the requirements of exhaust volume; design instructions should be clear air valve (port) function and control requirements.