The construction process of stainless steel ventilation pipeline project in underground garage is introduced in detail.

The construction process of stainless steel ventilation pipeline engineering in underground garage is generally divided into construction preparation, duct production, duct installation, equipment installation, system debugging and acceptance, etc. The following is a detailed introduction for you:

preliminary work for construction

technical reserve

Familiarity with drawings: Construction personnel need to fully understand the design drawings of the ventilation system of the underground garage, and make clear the direction, layout, connection mode and position relationship with other equipment of the pipeline.

Joint review of drawings: organize the construction unit, design unit and supervision unit to conduct joint review of drawings. Communicate with the design unit and solve the problems, contradictions or inconformity with the actual construction situation in the drawings in time to ensure the accuracy and integrity of the construction drawings.

Preparation of construction plan: according to the design drawings, relevant codes and standards and the actual situation of the construction site, prepare a detailed construction plan. The construction plan should include the general situation of the project, construction deployment, construction schedule, construction methods, quality assurance measures, safe and civilized construction measures, etc., to provide guidance for the smooth construction of the project.

Material preparation

Stainless steel plate: according to the design requirements, choose the stainless steel plate with appropriate specifications, models and thickness. The plate should have good corrosion resistance, strength and toughness, and the surface should be smooth without obvious defects such as scratches, pits and cracks. For the stainless steel plate entering the site, the quality certification documents, such as quality inspection report and product certificate, should be checked, and sampling inspection should be carried out according to regulations to ensure its quality meets the design requirements and relevant standards and specifications.

Auxiliary materials: prepare all kinds of auxiliary materials, such as angle steel, channel steel and flat steel, to make flanges, supports and hangers of air ducts; Bolts, nuts, washers and other connectors are used to connect air ducts, flanges, supports and hangers, etc. Sealing materials, such as rubber gasket, sealant, etc., are used to ensure the tightness of the air duct connection parts and prevent air leakage. For these auxiliary materials, it is also necessary to check their quality certification documents and conduct sampling inspection according to regulations to ensure their quality meets the requirements.

Machine preparation

Processing equipment: equipped with plasma cutting machine, shearing machine, bite machine, folding machine, rounding machine and other processing equipment, used to cut and shape stainless steel plates, and make air ducts and pipe fittings that meet the design requirements. These equipment should have good performance and accuracy, and can meet the requirements of stainless steel plate processing in the construction process. Before construction, these equipments should be comprehensively inspected, debugged and maintained to ensure that they are in good running condition and all performance indexes meet the requirements.

Welding equipment: According to the welding requirements of stainless steel air duct, prepare argon arc welding machine, covered electrode arc welding machine and other welding equipment. At the same time, equipped with corresponding welding tools, such as welding torch, mask, covered electrode insulation cylinder, etc. Welding equipment should have stable welding current and voltage output, which can ensure the reliability of welding quality. Before construction, the welding equipment should be inspected, debugged and maintained to ensure that its performance indexes meet the requirements of welding process. At the same time, appropriate welding materials, such as welding wire and covered electrode, should be selected according to the material and thickness of stainless steel plate, and the quality should be ensured to meet relevant standards and specifications.

Hoisting equipment: according to the weight and size of air ducts and equipment and the actual situation of the construction site, choose appropriate hoisting equipment, such as truck crane, crawler crane and hoist. The hoisting equipment shall have sufficient hoisting capacity and working radius to meet the requirements for hoisting air ducts and equipment during construction. Before construction, the hoisting equipment shall be comprehensively inspected, maintained and debugged to ensure that it is in good running condition and all safety devices are complete and effective, such as lifting limiter, lifting torque limiter, height limiter, amplitude limiter, rotary limiter and brake. At the same time, a detailed lifting operation plan should be made, the process, method and safety precautions of lifting operation should be defined, and technical disclosure and safety training should be given to lifting operators to ensure the safe and smooth lifting operation.

Measuring tools: In order to ensure the construction quality, it is necessary to equip various measuring tools, such as steel tape, vernier caliper, square, level and theodolite. These measuring tools should have high accuracy and reliability, and can meet the measurement requirements for the size, position, levelness and verticality of air ducts and equipment during construction. Before construction, the measuring tools should be calibrated and verified to ensure that their measuring accuracy meets the relevant standards and specifications. At the same time, in the process of use, we should operate according to the operating rules of measuring tools to avoid measurement errors caused by improper operation.

Site preparation

Site cleaning: Before the construction, the construction site in the underground garage shall be thoroughly cleaned to remove sundries, garbage and accumulated water, so as to ensure that the construction site is clean and dry and create a good working environment for the construction.

Inspection of construction conditions: check the civil structure of underground garage to ensure that the strength, flatness and verticality of walls, floors, roofs and other structures meet the design requirements and construction specifications, and can meet the installation conditions of ventilation pipes and equipment. At the same time, check the construction progress of electrical, fire fighting and other professional projects in the underground garage to ensure that the construction sequence between professional projects is reasonable and avoid mutual interference and influence. In addition, it is necessary to check whether the temporary facilities on the construction site, such as temporary water and electricity supply, temporary office space and temporary warehouse, are complete and can meet the production and living needs during the construction period.

Setting of safety protection facilities: set up obvious safety warning signs on the construction site, such as "Pay attention to safety", "No fireworks" and "Beware of falling" to remind the construction personnel to pay attention to safety and prevent safety accidents. At the same time, according to the actual situation of the construction site, set up necessary safety protection facilities, such as protective railings, safety nets, safety helmets, safety belts, etc., to ensure the personal safety of construction personnel in the construction process. In addition, it is necessary to inspect and maintain the temporary electricity facilities on the construction site to ensure that they meet the safety electricity consumption specifications and prevent electric shock accidents.

Duct making

Plate cutting

Marking according to the design size: according to the size requirements of the ventilation duct in the construction drawings, accurately mark the stainless steel plate with measuring tools such as steel tape and square ruler to determine the cutting position and size. When scribing, attention should be paid to the clarity and straightness of the lines to ensure that the dimensional accuracy of the cut plate meets the requirements. At the same time, the thermal deformation of the plate in the cutting process and the requirements of the subsequent processing technology should be considered, and the processing allowance should be reasonably reserved.