ac air conditioner heating cooling
DATE:2024-05-14 17:29:21
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According to the “ventilation and air conditioning engineering construction quality acceptance specification” GB50243-2016 Article 4.2.3: smoke exhaust system duct steel plate thickness can be determined according to the high-pressure system, and at the same time clear thin steel plate flange rectangular duct shall not be used for high-pressure duct. Then the point of contention: smoke exhaust system duct is a high-pressure system duct, in the end, thin steel plate flange connection can not be used for smoke exhaust system?
1, metal rectangular duct thin steel plate flange connection technology, according to the different forms of processing differences: flange and duct wall as a whole form, called “common plate flange pipe”, “no flange duct” or called “TDC Flange duct"; another is ‘combined flange’ duct (also called TDF flange), the thin steel plate flange with a special combination of flange machine made into a flange in the form of a flange, according to the length of the air duct material, inserted into the end of the wall of the made duct, and then riveted (pressed) together as a whole.
2, thin steel plate flange duct (i.e. common plate flange duct) from 2005 to promote a different range of domestic, to 2007 formed a related standard process and standard atlas “thin steel plate flange duct production and installation” 07K133.
3、Thin steel plate flange duct (i.e. common plate flange duct) is the most advanced production technology in China, adopting automatic assembly line to complete all kinds of processing procedures, with high production efficiency, accurate size and good molding quality. Compared with the traditional angle steel flange duct, it saves steel, the construction operation is simple and fast, the construction site saves the occupied area, reduces the production noise, and has more cost advantages. It is more and more widely used in engineering construction, first widely used in civil construction projects, and gradually expanded to subway, tunnel, civil aviation projects and other fields.
The traditional way of air duct connection, the flange is usually made of angle iron (so it is also called angle iron flange), the angle iron is usually fixed at both ends of the duct by riveting, and the flanges of the two sections of the duct are butt-jointed with gaskets in the middle to be connected by bolts. The advantages of angle iron flange connection are high strength, good stability and sealing, not easy to deform, the disadvantage is higher cost and lower efficiency.
As can be seen from the relevant provisions and clauses of the Technical Standard for Building Smoke Prevention and Exhaust System GB51251-2017 and the Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Projects GB50243-2016, thin steel sheet flange duct (common plate flange duct) is an important processing and production method of fire protection and smoke evacuation metal duct, and due to the maturity of its processing process, convenient molding, and more cost advantages, it can be Because of its mature processing technology, convenient molding and more cost advantage, it can be widely used in fire protection smoke exhaust duct system. In order to ensure the stability and reliability of the smoke exhaust system, the common plate flange duct must be connected by bolts, and the flange gasket should be non-combustible material.
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1, metal rectangular duct thin steel plate flange connection technology, according to the different forms of processing differences: flange and duct wall as a whole form, called “common plate flange pipe”, “no flange duct” or called “TDC Flange duct"; another is ‘combined flange’ duct (also called TDF flange), the thin steel plate flange with a special combination of flange machine made into a flange in the form of a flange, according to the length of the air duct material, inserted into the end of the wall of the made duct, and then riveted (pressed) together as a whole.
2, thin steel plate flange duct (i.e. common plate flange duct) from 2005 to promote a different range of domestic, to 2007 formed a related standard process and standard atlas “thin steel plate flange duct production and installation” 07K133.
3、Thin steel plate flange duct (i.e. common plate flange duct) is the most advanced production technology in China, adopting automatic assembly line to complete all kinds of processing procedures, with high production efficiency, accurate size and good molding quality. Compared with the traditional angle steel flange duct, it saves steel, the construction operation is simple and fast, the construction site saves the occupied area, reduces the production noise, and has more cost advantages. It is more and more widely used in engineering construction, first widely used in civil construction projects, and gradually expanded to subway, tunnel, civil aviation projects and other fields.
The traditional way of air duct connection, the flange is usually made of angle iron (so it is also called angle iron flange), the angle iron is usually fixed at both ends of the duct by riveting, and the flanges of the two sections of the duct are butt-jointed with gaskets in the middle to be connected by bolts. The advantages of angle iron flange connection are high strength, good stability and sealing, not easy to deform, the disadvantage is higher cost and lower efficiency.
As can be seen from the relevant provisions and clauses of the Technical Standard for Building Smoke Prevention and Exhaust System GB51251-2017 and the Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Projects GB50243-2016, thin steel sheet flange duct (common plate flange duct) is an important processing and production method of fire protection and smoke evacuation metal duct, and due to the maturity of its processing process, convenient molding, and more cost advantages, it can be Because of its mature processing technology, convenient molding and more cost advantage, it can be widely used in fire protection smoke exhaust duct system. In order to ensure the stability and reliability of the smoke exhaust system, the common plate flange duct must be connected by bolts, and the flange gasket should be non-combustible material.