地下机械车库自动喷水灭火系统设计探讨  

Discussion on Design of Sprinkler System for Underground Mechanical Garage

作　　者：陈星 朱瑞[1] CHEN Xing;ZHU Rui(China Southwest Architectural Designand Research InstituteCorp.Ltd.,Chengdu 610042,China)

机构地区：[1]中国建筑西南设计研究院有限公司

出　　处：《中国给水排水》2019年第24期39-42,共4页China Water & Wastewater

摘　　要：当前我国大城市汽车保有量逐年上升,受土地资源限制,改建或新建的地下机械车库数量日益增多。地下机械车库封闭性强,火灾起火快,自喷系统对其初期火灾有显著的抑制作用。机械车库自喷系统设计可咨询当地消防部门,选择合适的自动喷水灭火形式;机械车库车辆载车板两端需增设侧喷喷头,侧喷喷头宜选用K115边墙型快速响应喷头,工作压力不小于0.10 MPa,开放数量参考仓库货架内开放洒水喷头数量;考虑到侧喷喷头安装高度的影响,计算设计流量时先计算支管流量系数,再用节点法计算作用面积内全部开放喷头同时喷水总流量,工程设计中可根据项目自喷系统实际布置情况,参考此计算方法对系统设计流量进行计算。At present, the car ownership in big cities in China is increasing year by year. Restricted by land resources, the number of underground mechanical garages renovated or newly built is increasing day by day. The underground mechanical garage has strong closure and fast fire initiation, and the sprinkler systems has a significant suppression effect on its initial fire. The sprinkler system of the mechanical garage can consult the local fire department to select the appropriate form of automatic sprinkler system. The side sprinkler should be added at both ends of the vehicle board of the mechanical garage. The K115 side wall sprinkler should be chosen for the side spray head. The operating pressure is not less than 0.10 MPa, the open quantity refers to the number of open sprinkler in the shelf of the warehouse. Considering the influence of the installation height of the side sprinkler, the flow coefficient of branch pipe was first calculated for the open side nozzle, and then the total flow rate of all open side nozzles in the area of action was calculated by the nodal method. According to the actual layout of project sprinkler system, the design flow of the system can be calculated with reference to this calculation method.

关 键 词：地下机械车库 自动喷水灭火系统 工作压力 

分 类 号：TU998.1[建筑科学—市政工程]