Ventilation and air conditioning in the construction of the need to master certain processes and measures, so as to better install ventilation and air conditioning, so that the indoor air circulation, then, ventilation and air conditioning construction process is what? Today Xiao Bian introduced ventilation and air conditioning construction specifications for everyone.

Ventilation and air conditioning construction specification

The main function of ventilation and air conditioning is to provide oxygen needed for human breathing, dilute indoor pollutants or odors, eliminate pollutants produced in the indoor process, remove residual heat or moisture in the room, and provide indoor combustion air, mainly used in the family , commercial, hotel, school and other buildings.

1. The requirements for air filtration are different. The general air conditioning system adopts one or two filters, while the ventilation and air conditioning must set three or more filters;

2. The control of the indoor pressure, the general air conditioning system has no obvious requirement for the indoor pressure, and the purified air conditioning system has clear regulations for maintaining the pressure difference of the clean room;

3. For air distribution, the general air-conditioning system aims to achieve the goal of improving the uniformity of the indoor temperature and humidity field with a small amount of ventilation, while the ventilation and air-conditioning system must minimize and reduce dust to ensure the required degree of cleanliness. The proliferation of particles flew upwards, prompting dust particles to escape outdoors;

4. In terms of the number of air changes, the number of air changes in the ventilation and air conditioning system must also be at least 10 times/h, and even several hundred times.

Ventilation and air-conditioning engineering construction should pay attention to coordination with civil engineering, decoration, electrical and mechanical installation of other professional engineering and equipment suppliers.

For example, when preparing and pre-burying civil engineering, pay attention to the shape, size, and position of holes and holes, the position and size of embedded parts, etc.; the comprehensive layout of various pipelines and the determination of construction sequence; and timely provision for electrical specialties. Data on electrical parameters, control points, and control requirements of the equipment; when installing fan coils, air outlets (including delivery, return air, and fresh air inlets, etc.) and opening access doors, attention is paid to the protection of finished products for decoration works; Businesses provide equipment arrival time, installation requirements and corresponding data.

The construction content of the ventilation and air conditioning project mainly includes the installation of the ventilation and air treatment equipment, the prefabrication and installation of other duct systems of the ductwork, the installation of the automatic control system, the system commissioning and the project commissioning. The construction procedures for ventilation and air conditioning projects are generally: Construction preparation A duct and component processing A duct and the middle acceptance of components A duct system Installation A duct system tightness test A air conditioning equipment and air conditioning Water system Installation of a duct system Testing and adjustment of an air-conditioning system commissioning and acceptance of an air-conditioning system integrated performance determination.

Ventilation and air conditioning construction process

First, ventilation and air conditioning construction process

Process Preparation: (Including familiarity with drawings, technical team submission, equipment material preparation, etc.) → Basic acceptance, retesting, correction, processing → equipment unpacking, inventory, inspection, acceptance → cleaning equipment → equipment lifting, seating, leveling, finding Positive → Equipment piping production, installation (according to the preparation of the purification duct, installation process) → equipment commissioning → commissioning equipment with load operation → completion acceptance.

Production: Construction preparation (including mechanical and instrument inspections; team construction techniques, safety disclosure; familiarity with construction drawings, etc.) → sheet inspection, inspection and acceptance → material cleaning, removal of oil stains → stakeout, blanking → making mouthpieces (folding squares) Cleaning mouthpieces Oil → Produce ductwork semi-finished products → Remove impurities on the surface → Rivese and then clean the inner and outer surfaces of the air duct → Check and accept → Close the nozzle → Put it into storage.

Installation: Construction preparation → Hoisting (including cutting, straightening, forming, rust removing brush oil, etc.) → On-site lifting point arrangement → Semi-finished product shipped to the on-site assembly room → Duct assembly (including cleaning qualified valve parts) → Closed port Measurement piping (reproducing piping by production process) 运 Ship to site to assemble a closed system.

Second, ventilation and air conditioning construction technology and technical measures

1. Remove the oil from the material: Before the material is laid out, the oil on the surface of the material must be removed. It must be done as follows: one touch, two wipes, and three inspections to ensure that the oil on the surface of the sheet is completely removed. In order to avoid scratching on the surface of the sheet material during staking, destroying the galvanized layer and contaminating the dust, it is stipulated that the material shall not be placed on cement or soil, but shall be laid on a flat concrete floor with δ = 3mm clip rubber sheet material.

2. Making mouthpieces: After the galvanized steel sheet is cut into pieces, it must not be touched and dragged during handling so as to prevent abrasions or dirt. It should be transported using homemade racks or four-wheeled carts to make mouthpieces. Due to the contamination of the mouthpiece machinery, oily debris is often contained in the mouthpiece when the mouthpiece is made. In the combined molding, the inner and outer surfaces of the sheet material and the bite openings must be cleaned again. After the oil in the mouth is removed, the sheet material can be combined to form a semi-finished duct. After the sheets are combined and formed, the surface of the semi-finished products must be cleaned again.

3. Riveting molding: After the wind pipe sheet material is combined and formed, it must be riveted with the wind pipe flange. When riveting, it must be riveted in strict accordance with national regulations. The rivet must be galvanized, and the riveting must be followed by gluing or soldering. Fill the gap or hole, need to strengthen the wind pipe, reinforcement ribs can only be located in the outer surface of the duct, and can not be reinforced by rib method. The prefabricated air ducts are sent to the inspector along with the completed inspection form. The inspector is responsible for the inspection and acceptance of the seals. The sealing material is made of high-quality plain film, and each side is about 100mm beyond the flange.

Summary: The related information on ventilation and air-conditioning construction specifications and ventilation and air-conditioning construction technology was introduced here. I hope Xiaobian’s efforts can help you. If you have anything you don’t understand, you can leave a small message to the bottom of the list. We will answer your questions as soon as possible. This website will provide you with more complete, more detailed and updated information.

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