螺旋风管在很多排风系统中都有应用。比赛大厅的空调送风管为双层保温型圆形螺旋风管1400mm及1600mm,共计12条，送风方式采用126个630mm球形喷口从四周向馆内送风，对此采用了螺旋风管整体吊装技术。图1螺旋风管及球形喷口布置示意2施工工艺流程安装风管支架、风管分类编号、搭设风管组装平台→安装风管法兰→将风管吊到平台上组装→测量主风管中心水平线→测量成排风口中心线→风口三通开口→风口短管安装与保温→风口安装→风口支架安装→风管抱箍支架安装→葫芦安装→[10加固托架及吊装绳安装→风管吊管→风管支架安装及调整。3施工准备1）因风管安装在距地面25m高的桁架下方，2榀钢桁架梁之间的跨距为10·5m,其中间没有相连通道，施工人员无法进入2个桁架梁之间操作，而且根据结构设计，整个风管质量只能由钢桁架承受；对此，经现场充分的研究及详细的验算。

Spiral air pipes are used in many exhaust systems. The air conditioning pipe of the competition hall is a double insulation circular spiral wind pipe 1400mm and 1600mm, a total of 12, and 126 630mm spherical nozzle is used to send wind from around to the library. Figure 1 spiral wind pipe and spherical nozzle layout show 2 construction process flow installation of wind pipe support, wind pipe classification number, installation of wind pipe assembly platform, installation of wind pipe flange, installation of wind pipe to the platform assembly, measuring the central horizontal line of the main air duct, measuring the center line of the air outlet, the tuyere three opening, the installation and insulation of the tuyere short pipe and heat insulation. Tuyere installation, tuyere support installation, wind pipe hoop bracket installation, gourd installation, [10 reinforcement bracket and hoisting rope installation, wind pipe hanger pipe, wind pipe support installation and adjustment. 3 construction preparation 1) because the wind pipe is under the truss of 25m height to the ground, the span of the 2 steel truss beams is 10. 5m. There is no connecting channel between them. The construction personnel can not enter the operation between the 2 truss beams, and the whole pipe quality can only be subjected to the steel truss frame according to the structure design. Detailed checking.