Air duct reinforcement is very important, Zhangjiagang Jinrong Ventilation Equipment Co., Ltd. has a coup

Duct reinforcement is important to stabilize the duct and provide a comfortable environment. For example, in the subway, the ventilation and air-conditioning system of the subway station has a large service area, which leads to a large size of the conveying gas pipeline and a high working pressure. Most of the working pressure of each system belongs to the medium pressure system. Large changes in pressure and airflow disturbance during normal operation of the system will cause noise due to insufficient air duct strength and vibrate, which will affect the overall comfort of the station environment; at this time, taking duct reinforcement measures can be a good solution. this question. Since some pipes in the subway are also used for smoke exhaust, the connection form of the air pipes is mostly angle steel flanges. In addition, the 'Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering' also makes relevant provisions for the reinforcement of metal air ducts, including: (1) The diameter of circular air ducts (excluding spiral air ducts) is greater than or equal to 8mm, and the length of the pipe section is greater than 1250mm Reinforcement measures should be taken if the total surface area is greater than 4m. (2) The side length of the rectangular duct is greater than 630mm, the side length of the insulation duct is greater than 800mm, the length of the pipe section is greater than 1250mm, or the area of u200bu200bthe low-pressure duct is greater than 1.2m, and the medium-pressure and high-pressure duct If it is larger than 1.0㎡, reinforcement measures should be taken. (3) The reinforcement of irregular elliptical air ducts should be carried out with reference to rectangular air ducts. ), flat steel, reinforcing bars and inner tube supports. (5) For the reinforcement of corrugated bars or corrugated lines, the arrangement should be regular, the interval should be uniform, and the board surface should not have obvious deformation. (6) The reinforcement of angle steel and reinforcing bars should be arranged neatly, evenly and symmetrically, and its height should be less than or equal to the flange width of the air duct. The riveting of angle steel, reinforcing bars and air ducts should be firm and evenly spaced. It should not be larger than 220mm, and the intersection should be connected to an integrated ventilation duct installation (7) The inner support of the pipe and the air duct should be fixed firmly, and the spacing between each support point or the edge of the air duct or flange should be uniform, and should not be greater than 950mm (8 ) When the length of the air duct section of the medium pressure and high pressure system is greater than 1250mm, a reinforcement frame shall be provided for reinforcement. The single bite seam of the metal air duct of the high-pressure system should also have reinforcement or reinforcement measures to prevent the bite seam from bursting. Generally speaking, when reinforcing the air duct, corrugated bars, vertical bars, angle steel, flat steel , reinforcement ribs and inner support in the tube, etc., according to the actual situation and needs, choose a more suitable one. Our more common reinforcement methods are: (1) The joint height reinforcement method (2) The angle steel reinforcement method is used in the middle of the air duct or elbow (3) The inner wall of the air duct is provided with longitudinal ribs to reinforce the Zhangjiagang ventilation duct. In practical applications, according to According to the actual situation, choose the most suitable reinforcement method for construction. In recent years, we have undertaken a number of large-scale engineering projects, which have been highly appreciated by customers, whether it is the quality of air ducts, or the process of air duct installation and reinforcement.

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