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Matters needing attention when starting axial flow fan Surveying and mapping requirements

Release Time：2021-07-20

When the axial flow fan is started, the current of the motor will be 5-6 times higher than the rated value, which will not only affect the service life of the motor but also consume more electricity. A certain margin will be left in the selection of the motor during the design of the system. The speed of the motor is fixed, but in the process of practical application, it is sometimes necessary to run at a lower or higher speed, so it is very necessary to stop the frequency conversion transformation.
The frequency converter can complete the soft start of the motor, achieve the purpose of energy saving and speed regulation by changing the input voltage frequency of the equipment, and can provide the equipment with maintenance functions such as overcurrent, overvoltage, overload, etc. The axial flow fan can be used for ventilation or heat dissipation enhancement in metallurgy, chemical industry, light industry, food, medical equipment, mechanical equipment and civil buildings. If the casing is removed, it can also be used as a free fan, can also be in a longer exhaust pipe distance series device, in order to improve the wind pressure in the pipeline.
Characteristics of axial flow fan: small axial flow fan: low power consumption, fast heat dissipation, low noise, energy saving and environmental protection, etc. Due to its small size and common use, large axial flow fan has the characteristics of simple structure, stability and reliability, low noise, large air volume, wide range of function selection, etc. Axial flow fan centrifugal fan changes the flow direction of medium in the air duct, while axial flow fan does not change the flow direction of medium in the air duct. The former device is more complicated.
The former motor and the fan are usually connected with the rotating wheel driven by a belt, while the latter motor is usually in the fan. The former is usually equipped in the inlet and outlet of the air conditioning unit, boiler drum, induced draft fan, etc., while the latter is usually equipped in the air duct, or at the front end of the air duct outlet. In addition, there is a diagonal flow (mixed flow) fan, whose wind pressure coefficient is higher than that of the axial flow fan, and the flow coefficient of centrifugal fan, to fill the gap between the axial fan and centrifugal fan.

Survey and mapping fan injection axial flow fan.
1. Before surveying and mapping, the relevant data (performance parameters and drawings, etc.) can be used to preliminarily judge the form, specification and size of the ventilator to be measured, and to prepare surveying and mapping measuring tools, tools and planning surveying and mapping schemes, etc.
2. The shape and size of the ventilation part of the ventilator are the key to ensure the dynamic performance of the ventilator. Therefore, when surveying and mapping the ventilation parts of the ventilator, the accuracy of the shape and size of the ventilation part should be ensured as far as possible. The most important thing is the blade type line of the impeller and the installation angle of the blade inlet and outlet. The marked size is also based on the size of the ventilation part.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong, the hometown of FRP in China. The company has Grade II qualification for fire protection facilities engineering, Grade II qualification for construction mechanical and electrical installation engineering, Grade II qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, and an axial fan invention patent, A fan utility model patent, environmental assessment, safety assessment, three simultaneous and other procedures are complete.