01对通风管道制作的要求进行检查

01 Check the requirements for the production of ventilation ducts

检查通风管道穿越防护密闭墙、密闭墙的预埋密闭穿墙短管。通风预埋密闭短管采用厚度不小于3mm钢板机械卷制成形（其厚度还应根据预埋管管径大小确定，使预埋管不致变形），防爆超压排气活门的预埋短管其厚度为6mm，密闭短管中间应设密闭肋，密闭肋厚度为5mm，密闭肋高度为50mm，密闭肋与短管应双面满焊、焊缝严密。密闭穿墙短管两端深处墙面的长度应大于100mm，管道内外部除与混凝土接触部分外均应刷两道防锈漆。

Inspect the ventilation pipes that pass through the protective sealed wall and the pre embedded sealed short pipes that pass through the sealed wall. The ventilation pre embedded sealed short pipe is formed by mechanical rolling of steel plate with a thickness of no less than 3mm (its thickness should also be determined according to the diameter of the pre embedded pipe to prevent deformation). The pre embedded short pipe of the explosion-proof overpressure exhaust valve should have a thickness of 6mm, and a sealing rib should be set in the middle of the sealed short pipe. The thickness of the sealing rib is 5mm, and the height of the sealing rib is 50mm. The sealing rib and the short pipe should be fully welded on both sides and the weld seam should be tight. The length of the wall at the depth of both ends of the sealed wall penetrating short pipe should be greater than 100mm, and the inner and outer parts of the pipe, except for the part in contact with concrete, should be painted with two layers of anti rust paint.

02对风管连接处制作的要求进行检查

02 Check the requirements for the production of air duct connections

对染毒区的通风管道连接方法及密封进行检查。如无设计要求，其风管厚度应采用大于等于3mm的钢板焊接制作而成。风管与风管连接应采用焊接连接。通风管道与密闭阀门的连接应采用带密封槽的法兰连接，其法兰面应经机床车削加工，保证接触应平整，法兰面有1~2mm深的90°密封槽；风管与设备连接法兰之间应采用整体橡胶法兰垫圈，防爆超压排气活门法兰连接填料采用5mm整张橡胶垫圈密封（不得有拼缝），其他染毒区风管连接及法兰与设备连接采用4~5mm整张橡胶垫圈密封（不得有拼缝），连接处不得有漏缝现象。

Inspect the connection method and sealing of ventilation ducts in the contaminated area. If there are no design requirements, the thickness of the air duct should be made by welding steel plates with a thickness of 3mm or more. The connection between air ducts should be welded. The connection between the ventilation duct and the sealed valve should use a flange connection with a sealing groove. The flange surface should be machined by a machine tool to ensure smooth contact. The flange surface should have a 90 ° sealing groove with a depth of 1-2mm; An integral rubber flange gasket should be used between the air duct and the equipment connection flange. The explosion-proof overpressure exhaust valve flange connection filler should be sealed with a 5mm full rubber gasket (without joints). For other contaminated areas, the air duct connection and flange to equipment connection should be sealed with a 4-5mm full rubber gasket (without joints), and there should be no leakage at the connection.

03对通风管制作的要求进行检查

03 Inspection of the requirements for the production of ventilation pipes

对主体工程内通风管与配件所用材料规格进行检查。其所用钢板品种、规格应符合设计要求。同一通风、空调系统的材质应一致。人防工程主体内部的通风管与配件的钢板厚度应大于0.75mm。

Inspect the material specifications used for ventilation pipes and fittings in the main project. The variety and specifications of the steel plates used should meet the design requirements. The materials of the same ventilation and air conditioning system should be consistent. The steel plate thickness of the ventilation pipes and accessories inside the main body of civil air defense engineering should be greater than 0.75mm.

04对减振吊架制作的要求进行检查

04 Inspection of the requirements for the production of vibration damping hangers

管道风机采用减振吊架安装时，风机与减振吊架连接紧密，牢固可靠；采用支、托架安装时，风机与减振器及支架、托架连接紧密，稳固可靠。

When the pipeline fan is installed with a vibration damping hanger, the connection between the fan and the vibration damping hanger is tight, firm and reliable; When using supports and brackets for installation, the fan is tightly connected to the shock absorber and the brackets and brackets, ensuring stability and reliability.

05对风管咬口制作的要求进行检查

05 Inspection of the requirements for the production of bite marks on air ducts

风管咬口应紧密，各层板材之间无明显的空隙。相同厚度同一型式的板材咬缝宽度应一致，不得出现宽窄不一的缺陷，手工制作的咬口缝宽度差控制在2mm以内，咬口机成型的咬口缝两端偏差不得大于1mm。在咬口缝的搭接处，矩形法兰四角翻边、三通、四通管加裆等处避免产生看得见的孔洞。直管拼接不应有十字接缝，咬口缝还不得出现脱落、张开、未压实和有明显缝隙等质量缺陷。

The bite of the air duct should be tight, and there should be no obvious gaps between the layers of the board. The width of the biting seam of the same thickness and type of board should be consistent, and there should be no defects of uneven width. The difference in the width of the biting seam made by hand should be controlled within 2mm, and the deviation at both ends of the biting seam formed by the biting machine should not exceed 1mm. At the overlap of the bite seam, avoid visible holes at the corners of rectangular flanges, tees, and crotch joints of four-way pipes. The straight pipe splicing should not have cross joints, and the bite joint should not have quality defects such as detachment, opening, lack of compaction, and obvious gaps.

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