来源： 日期：2019-09-24 发布人：admin
In order to achieve good ventilation effect in large-scale buildings, ventilation measures are usually adopted. In addition to air-conditioning power equipment, some ventilation ducts are often added to achieve ventilation and ventilation function, and to achieve this goal, we are using spiral ducts and spiral ducts widely. Today we talk about Jinan Air Pipe Processing Plant:
Although spiral duct has many advantages, it is exposed to the outdoors in most cases, so wind, rain, sun, these factors will corrode or corrode the spiral duct. Therefore, the products required for its anti-corrosion performance are galvanized spiral duct, stainless steel spiral duct, composite spiral duct, and three kinds of pipelines are corrosion-resistant.
The helical duct has good air flow, large effective flow area, small pressure drop and low power consumption in daily operation. At the same time, the strength of the spiral duct is higher than that of the duct of the same specification because of the spiral bite.
In the process of air passing through the pipeline, there are spiral bite seams at the circumference, which increase the strength of the air pipeline and avoid vibration. Therefore, it has good sound insulation effect in reducing the transmission of low-frequency noise, can effectively reduce the sound transmission of the pipe wall, and improve the quality of the building. The results show that the stiffness of the helical tube is higher than that of the helical tube, and its lower frequency band is 3-10 dB and 12-20 db. On the premise of similar cross section and the same thickness of duct material, the sound insulation effect of elliptical helical duct in low frequency band is about 10 dB better than that of rectangular duct.
High degree of mechanization of spiral duct
The spiral elliptical duct and the strip coiled spiral duct are formed into a flat ellipse by means of the shape of the bite bone of the duct forming machine and the shape of the coiled circular duct tracked along the spiral involute. At the same time, the pressure of the bite seam is used to shape the stretched circular duct. Users can cut it short as needed. The manufacturing automation of spiral air duct is high and the production speed is fast. At the same time, the production efficiency of elliptical helical duct has been greatly improved by adopting factory production and standardized production.