How to install stainless steel ventilation pipeline project in underground garage?

The installation of stainless steel ventilation pipe project in underground garage should strictly follow the construction specifications and design requirements to ensure the stable operation of ventilation system and provide a good air environment for underground garage. The following are the specific installation steps and key points:

preliminary work for construction

Material preparation: according to the design requirements, prepare stainless steel plates with corresponding specifications, models and thicknesses. Plate should have good corrosion resistance, smooth surface and no defects such as scratches and cracks. At the same time, prepare all kinds of connecting accessories, such as angle steel, channel steel, bolts, nuts, washers, etc., to ensure that their materials are compatible with stainless steel ventilation pipes to avoid electrochemical corrosion due to different materials. In addition, it is necessary to prepare sealing materials, such as rubber gaskets and sealants, to ensure the tightness of the connection parts of ventilation pipes and prevent air leakage.

Tool preparation: During installation, a variety of professional tools are required. Cutting tools, such as plasma cutting machine and special cutting machine for stainless steel, are used to cut stainless steel plates into required sizes and shapes. Welding tools, such as argon arc welder and covered electrode arc welder, are used to weld stainless steel ventilation pipes to ensure firm connection. In addition, it is necessary to prepare processing tools, such as bite machine, flanging machine, rounding machine, etc., for processing stainless steel plates and making various parts of ventilation pipes. At the same time, in order to ensure the installation accuracy, it is necessary to equip measuring tools, such as steel tape measure, vernier caliper, level meter and theodolite, to measure and adjust the size, position, levelness and verticality of ventilation pipes.

Site preparation: Before installation, the installation site of underground garage shall be thoroughly inspected and cleaned. Check whether the on-site civil structure has been completed and meets the design requirements, such as whether the wall, floor and roof are flat and whether there are cracks, holes and other defects. At the same time, it is necessary to confirm the construction progress of other professional projects, such as electrical and fire protection, to avoid conflict and interference with the ventilation pipe installation project. In addition, it is necessary to clean up the sundries and garbage at the installation site to ensure a clean and tidy environment and create favorable conditions for the installation of ventilation pipes. At the same time, obvious safety warning signs, such as "Pay attention to safety", "No fireworks" and "Beware of falling", are set up at the site to remind construction personnel to pay attention to safety and prevent safety accidents.

Duct making

Plate cutting: according to the size and shape requirements of the ventilation duct in the design drawings, use a plasma cutting machine or a special stainless steel cutting machine to cut the stainless steel plate. When cutting, it is necessary to strictly control the cutting speed and cutting current to ensure that the cutting surface is flat and smooth, and there are no defects such as burrs and notches. At the same time, in order to ensure the accuracy of cutting size, steel tape measure or vernier caliper should be used to measure the cut plate. If there is any deviation, it should be adjusted in time. In addition, a lot of heat and sparks will be generated during the cutting process, so effective protective measures should be taken, such as wearing protective glasses and gloves, to prevent burns and eye injuries. At the same time, it is necessary to set fire prevention facilities, such as fire extinguishers and fire sand, at the cutting site to prevent fire accidents.

Duct forming: After cutting is completed, the cut stainless steel plate is processed by using processing tools such as a bite machine, a folding machine and a rounding machine, and various parts of the ventilation duct are made. For rectangular air ducts, it is necessary to bite the edge of the plate with a bite machine, then use a folding machine to fold the plate into the required rectangular shape, and use rivets or bolts to fix the bite to ensure the firm connection of the air duct. For the circular air duct, it is necessary to roll the plate into the required circular shape by using a rounding machine, and then weld the butt joint of the plate by using an argon arc welding machine or a covered electrode arc welding machine to ensure the good airtightness of the air duct. In the process of air duct molding, it is necessary to strictly control the machining size and shape accuracy to ensure that all parts of the air duct meet the design requirements. At the same time, it is necessary to check the appearance of the processed air duct to ensure that the surface of the air duct is flat and smooth, and there are no obvious defects such as bumps, deformations and scratches. In addition, in the process of duct molding, a lot of noise and dust will be produced, so effective protective measures should be taken, such as wearing earplugs and masks, to prevent hearing loss and respiratory diseases. At the same time, it is necessary to set up dust collection equipment at the processing site to clean up the dust generated during the processing in time and keep the site environment clean and tidy.

Duct connection: After the duct components are manufactured, they need to be connected into a complete ventilation duct system. For rectangular air ducts, angle steel flange connection or flange connection is usually adopted. When connecting angle steel flanges, it is necessary to weld the angle steel flanges with the four sides of the air duct first to ensure that the welding is firm and there is no phenomenon such as virtual welding and missing welding. Then, at the butt joint of angle steel flanges, use bolts and nuts to connect the two flanges, and put rubber gaskets between the flanges to ensure the good sealing performance of the air duct connection parts. When flange connection is not possible, it is necessary to use special flange connection fasteners to connect all sides of the air duct. When connecting, it is necessary to ensure that the fasteners are firmly installed without loosening or falling off. At the same time, sealant should be applied to the connection part of the air duct to ensure the good sealing performance of the connection part of the air duct. For circular air ducts, socket connection or welding connection are usually adopted. In socket connection, the end of one air duct should be processed into socket shape and the end of the other air duct into socket shape. Then, insert the socket into the socket, and apply sealant on the socket part to ensure the good sealing performance of the air duct connection part. When welding connection, it is necessary to weld the butt joint of two air ducts to ensure that the welding is firm and there is no phenomenon such as virtual welding and missing welding. At the same time, after the welding is completed, it is necessary to polish the welding part to ensure that the surface of the welding part is flat and smooth, and there are no obvious defects such as bumps and depressions. In the process of air duct connection, it is necessary to strictly control the connection quality to ensure that the air duct is firmly connected and well sealed. At the same time, the appearance of the connected air duct should be inspected to ensure that there are no obvious defects such as deformation, dislocation and cracks in the connection part of the air duct. In addition, in the process of air duct connection, a lot of noise and dust will be generated, so effective protective measures should be taken, such as wearing earplugs and masks, to prevent hearing loss and respiratory diseases. At the same time, it is necessary to set up dust collection equipment at the connection site to clean up the dust generated in the connection process in time and keep the site environment clean and tidy.