What materials are commonly used in ventilation and air conditioning ducts, and in what occasions ar

Fiber fabric air duct is often called bag air duct, cloth air duct, fiber cloth air duct, fiber fabric air duct, cloth air duct, fiber fabric air distributor, etc., is the latest air duct type, is a flexible air distribution system woven by special fibers, is a replacement for traditional air supply pipe, air valve, diffuser, thermal insulation material and other air terminal system. It is a unique air outlet pattern that mainly relies on fiber penetration and nozzle jet to evenly supply air to the end of the air supply. It has a face-type air outlet, large air volume, and no blowing feeling; The overall air supply is evenly distributed; anti-condensation; Easy to clean and maintain, healthy and environmentally friendly; Beautiful and high-end, diverse colors, outstanding personalization; Light weight, negligible roof load; The system runs quietly and improves the quality of the environment; Simple installation, shorten the project cycle; Flexible installation and reusability; The system has the advantages of comprehensive cost saving, high cost performance, etc.

1. Automobile workshop.

Bag air duct system In the first plant, the general main pipe and the traditional air duct system are arranged in the grid frame, and are connected to the horizontal branch pipe arranged directly above the post line or diagonally above the post line with an installation height of 2-5 meters through the riser. It truly realizes the complete station line air supply.

2. Engine and gearbox manufacturing plant.

It is similar to that of a general machine shop. When the post air supply, the bag air duct is arranged along the post point, taking into account the functions of post air supply and oil isolation. When the air is evenly supplied, the bag air duct is evenly arranged in multiple rows of parallel straight pipes at a height of about 5 meters as needed to jointly supply air to the working area.

3. Other auto parts workshops.

It can be regarded as a general mechanical workshop, or a variety of air supply forms such as post air supply or uniform air supply. There are some workshops, especially automotive electronic parts, which are relatively low in space, similar to small electronic factories, and mostly use the form of uniform air supply of single cabinet machines. Bag duct systems also have application examples.

4. Automobile welding workshop.

In the welding workshop, the bag duct system is used to meet the requirements of fire protection regulations. The layout scheme is the same as the air supply of the first plant post to meet the needs of post air supply or post line air supply.

5. Automobile stamping plant.

In the stamping workshop, there are relatively tall stamping equipment and hoisting cranes, and the bag air duct system can be flexibly applied and arranged on the outside of the support column or above the crane. Ensure that the need to achieve post air supply or uniform air supply without affecting the operation of the vehicle.

It is more common to have fiber fabric material Sosi air duct, as well as the traditional iron air duct, but now advocate green energy saving, most of them are slowly using fiber fabric air duct, generally large spaces and other places can be used.

The materials used in ventilation and air conditioning engineering are generally divided into three types: main materials, auxiliary materials and consumable materials. The main material mainly refers to plate and section steel, which is divided into two categories: metal plate and non-metallic material.

1. Main material 1) Grip the stuffy beam and metal plate.

1) Ordinary thin steel plate.

2) Galvanized thin steel plate.

3) Aluminum and aluminum alloy plates.

4) Stainless steel plate.

5) Plastic composite panels.

2) Non-metallic materials.

1) FRP air duct:

2) Hard PVC board:

3) In the ventilation and air conditioning project, in addition to using plates for processing and making air ducts and accessories, a large number of sections of steel are also needed to make air duct flanges, brackets and frames of section transportation parts. Commonly used section steels include flat steel, angle steel, round steel, channel steel, etc. It is required that the appearance of the section steel should be equal and uniform in length, without cracks and bubbles, and without serious corrosion.

4) Other materials In ventilation and air conditioning engineering, other commonly used materials mainly include bricks, stones, concrete and other materials used for masonry of various air ducts.

2. Auxiliary materials:

1 Litter. 2 bolts and nuts.

3. Consumable materials.

Consumable materials mainly refer to the materials that are consumed in the process of processing and construction of ventilation and air conditioning projects, but have no original form after installation, such as oxygen, acetylene, saw blades, welding rods, etc. used in the project.

Answer]: C6 6 2 The air duct split chain materials, accessories and flexible joints of ventilation and air-conditioning systems shall comply with the relevant provisions of the current national standard "Code for Fire Protection Design of Buildings" GB 50016. When transporting corrosive or humid gases, anti-corrosion materials should be used or corresponding anti-corrosion measures should be taken.

Construction regulations: The air duct of the ventilation and air source slow adjustment system should be made of non-compatible molded materials.

Air conditioning ventilation ducts are generally divided into three materials: white iron (galvanized) ventilation ducts, FRP ventilation ducts, and composite ventilation ducts.

Generally, polyurethane pipes are selected for environmental protection, and phenolic pipes are used for those with low prices.

Most of them use galvanized pipes in Beijing, and composite air ducts are used in Shanghai and Guangzhou.

Ventilation duct is a metal or non-metallic pipe used in ventilation and air conditioning engineering of industrial and civil buildings, which is a kind of municipal infrastructure that is used to circulate air and reduce the concentration of harmful gases.

The plates, profiles and other main finished materials used in the production and installation of air ducts shall comply with the provisions of the current national standard hall for design and related products, and the factory inspection certificate shall be applied, and the materials shall be accepted in accordance with the current national standards when entering the site.

Air conditioning ventilation ducts are generally divided into three materials: white iron (galvanized) ventilation ducts, FRP ventilation ducts, and composite ventilation ducts.

Generally, polyurethane pipes are selected for environmental protection, and phenolic pipes are sold for low cost.

Most of them use galvanized pipes in Beijing, and composite air ducts are used in Shanghai and Guangzhou.

Ventilation duct is a metal or non-metallic pipe used in ventilation and air-conditioning engineering of industrial and civil buildings, which is a kind of municipal infrastructure that is used to circulate air and reduce the concentration of harmful gases.

The plates, profiles and other main finished materials used in the production and installation of air duct cultivation and dismantling shall comply with the provisions of the current national standards for design and related products, and the factory inspection certificate shall be applied, and the materials shall be accepted in accordance with the current national standards when entering the site.

There are the following 6 kinds of air duct fittings commonly used in ventilation ducts, and their functions are as follows:

1.Flange.

The flange is used for the extended connection between the ventilation duct and the air duct and the fittings, and can increase the strength of the air duct. According to its cross-sectional shape, it can be divided into rectangular flange and round flange.

2.Valve. The valve in the ventilation system is mainly used to start the sail, close the air duct and tuyere, adjust the air volume in the pipe, balance the resistance, etc. The valve is installed in the air duct of the fan outlet, the main downair duct, the branch air duct or the air distributor. Commonly used valves are plug-in valves and butterfly valves.

3.Flexible stubs.

In order to prevent the vibration of the fan from being transmitted to the room through the air duct and causing noise, flexible short pipes with a length of 150 200mm are often installed at the inlet and outlet of the fan. In general, the flexible short pipes of the ventilation system are made of canvas, and the ventilation system for transporting corrosive gases is made of acid-resistant rubber or thick polyvinyl chloride plastic sheeting.

4.Elbow. An elbow is a fitting used to change the direction of a ventilation duct. According to its cross-sectional shape, it can be divided into circular elbow and rectangular elbow. The radius of curvature and the number of middle sections of the 90° elbow.

5.Tee. Tees are bifurcated or pooled fittings of ventilation ducts. According to its cross-sectional shape, it can be divided into circular tee and rectangular tee.

6.Back and forth.

Alternate bends are used in ventilation ducts to span or move away from other ducts and building components. According to its cross-sectional shape, it can be divided into circular and rectangular bends.

1. Divide two branches: air supply and return air.

2. The main pipeline of the branch has sufficient diameter, minimizes the curve, and reduces the resistance;

3. Reasonable arrangement of indoor air supply outlets: one mouth is in the first place, two are diagonal, and three are triangular.

4. The return air outlet should not be too close to the air supply outlet.

5. Try not to have any obstructions at the tuyere and below the air outlet for sending and returning air, and try not to blow people directly or by the window.