Performance characteristics of air duct fan and what aspects should be paid attention to during installation?
Stainless steel spiral duct fan is a kind of spiral duct fan, which is widely used at present. It can be seen in chemical fiber, petrochemical, machinery manufacturing, medicine, food and other industries.
Both ends of the stainless steel spiral duct fan are normally external accessories such as elbows, and there are sealing rings at both ends, but there is no groove. Stainless steel screw machine is mainly characterized by beautiful appearance, high strength, good sealing performance, simple installation and long service life.
The inner and outer walls of the spiral duct fan are smooth, the piping resistance is small, and no noise is generated during use. Basically no maintenance is required, which can reduce power consumption and save cost. The installation of stainless steel coil is also very important. The main contents are stainless steel coil tube, horizontal installation. The diameter or length of the long side shall not exceed 400mm, and the distance shall not exceed 4m. The diameter or length of the long side shall not exceed 400mm, and the distance shall not exceed 3M.
The distance between the support and clothes hanger of spiral duct fan equipment is 5m, and the length is 3.75m. The stainless steel coil within this range shall be installed vertically, and the distance shall not exceed 4m. Pipe supports and hangers shall not be placed at air vents, valves, check valves, etc.
When processing the welded ventilation pipe, the first thing to do is to cut the pipe. In this regard, it should be carried out in strict accordance with the drawings, and before cutting the material, it is necessary to carefully check whether the size is correct; During blanking, material waste must be avoided. If the material of stainless steel welded ventilation pipe is special, it should be discharged as a whole before blanking, so as to control the amount of pipe.
Then, when blanking stainless steel welded ventilation pipes, if stainless steel pipes are used, mechanical or plasma cutting should be used when cutting, and the rest should be cut with flame; The inclination deviation of the cut end face shall not exceed 2mm.
The groove preparation in the processing of stainless steel welded ventilation pipe should be carried out in accordance with the specification requirements, and the main connection is welding. In case of groove of medium and low pressure pipeline, V-shape is suitable; If it is a high-pressure pipeline, it is necessary to pay attention to YV groove at this time. The groove processing shall be flat without any defects.
The weld joint assembly during the processing of stainless steel welded ventilation pipe actually refers to the pipe assembly. Before that, pay attention to cleaning the pipe interface. When prefabricating pipes, it should be noted that there must be strict prefabrication allowable deviation, and the prefabricated parts should also be numbered according to the specified requirements, so as to facilitate our quality control.
Then, as for the processing steps on the stainless steel welded ventilation pipe, pay attention to the assembly of the butt welded junction of the stainless steel welded ventilation pipe. In this regard, it should be noted that the inner wall should be flush, and in terms of its misalignment, it should be noted that it should not exceed 10% of the wall thickness, otherwise the equipment quality of the pipe will be affected.