专注通风管道加工·排烟罩

　　Everyone is not very familiar with the ventilation pipeline. The ventilation pipeline should not only be anti-corrosion and heat preservation, but also pay attention to the matters needing attention in the installation of the ventilation pipeline.

　　山东通风管道

　　Shandong Ventilation Pipeline

　　（1）当风管与风机连接时，应在进出风口处加软接头，其软接头的断面尺寸应与风机进出风口一致。软管接头一般可采用帆布、人造革等材料，软管长度不宜小于200，松紧度应适宜，柔性软管可缓冲风机的振动。

　　(1) When the air duct is connected with the fan, a soft joint should be added at the inlet and outlet of the fan. The cross-section size of the soft joint should be the same as that of the inlet and outlet of the fan. The hose joint can generally be made of canvas, artificial leather and other materials. The length of hose should not be less than 200, the tightness should be appropriate, and the flexible hose can cushion the vibration of the fan.

　　（2）双吊杆支架在风道就位后，应保证横担平直，吊杆不扭转，双吊杆受力均匀。

　　(2) After the double suspender bracket is in place in the airway, it should ensure that the cross-arm is straight, the suspender does not twist, and the double suspender bears uniform force.

　　（3）当风道与除尘设备、加热设备等连接前，应待设备安装完毕后，按实际测绘的图纸进行预制和安装。

　　(3) When the air duct is connected with dust removal equipment and heating equipment, it should be prefabricated and installed according to the actual surveying drawings after the installation of the equipment.

　　（4）山东通风管道安装时，进、出风日宜在风道预制时开出洞口，如需在安装完毕的风道上现开风口，其接口处应严密。

　　(4) When installing Shandong ventilation pipeline, the inlet and outlet days should be opened when the duct is prefabricated. If the outlet is to be found in the installed duct, the interface should be tight.

　　（5）当输送含凝结水或含湿量较大的气体时，其水平管道宜设有坡度，并在低点处接排水管。安装时风道底部不宜出现纵向接缝，对底部有接缝处应进行密封处理。

　　(5) When conveying gas with condensate water or high moisture content, the horizontal pipeline should have a slope and be connected with a drainage pipe at a low point. Longitudinal seams should not appear at the bottom of the air duct during installation. Sealing treatment should be carried out at the seams at the bottom.

　　（6）对输送易燃、易爆气体的钢板风道，在风道连接法兰处应安装跨接线，并与静电接地网连接。

　　(6) For steel plate air ducts conveying flammable and explosive gases, a cross connection shall be installed at the flange of the air duct connection and connected with the electrostatic grounding grid.

　　（7）当水平风道高度在4m以上时，安装人员应系带。脚手架或移动式支架上的跳板应固定好，跳板宽度应符合规范，在脚手架上的安装人员宜携工具袋，防止工具或电钻等物坠落伤人。

　　(7) When the height of horizontal duct is more than 4m, the installation personnel should wear seat belts. The springboards on scaffolds or mobile supports should be fixed well, the width of springboards should conform to safety standards, and the installers on scaffolds should carry tool bags to prevent tools or electric drills from falling and injuring people.

　　通风管道防腐保温的必要性：当风道输送一般气体时，对黑钢板风道应进行除锈、刷防锈漆处理，对含尘气体可喷涂防磨损保护层。在风道输送高温气体或低温空气时，风道外壁应做保温(保冷)处理。当周围环境空气湿度较大时，风道外壁需做防腐蚀、防锈处理。对输送高温、高湿气体的镀锌钢板风道内壁宜喷刷磷化底漆或其他耐蚀涂料。

　　Necessity of anti-corrosion and heat preservation of ventilation pipeline: When the air duct conveys general gas, the air duct of black steel plate should be treated with rust-removing and anti-rust paint brushing, and the dust-containing gas can be sprayed with anti-wear protective layer. When conveying high temperature gas or low temperature air in the duct, the outer wall of the duct should be treated with heat preservation (cold preservation). When the ambient air humidity is relatively high, the outer wall of the duct needs to be treated with anti-corrosion and anti-rust. Phosphating primer or other corrosion resistant paint should be sprayed on the inner wall of galvanized steel duct conveying high temperature and humidity gas.