2016年10月30日星期日

Frequency Converter Application in Industrial Fans And Blowers by Xianrun Blower

Frequency Converter Application in Industrial Fans And Blowers by Xianrun Blower

Frequency converter is variable speed equipment of industrial production equipment for the three-phase ac motor, such as various fan equipment of product processing and manufacturing industry, ID fan, FD fan for boiler combustion system, cooling fans on the drying system, ventilation fan or exhaust fan for ventilation system, etc.
High Temperature Industrial ID Fans for Boilers

The most energy saving and power consumption are main fans in coal power plant.
Fan frequency converter controls and adjust fans according to furnace pressure, wind speed, air volume, temperature, and etc., to meet the technological requirements and operation condition.

In the past without frequency converter, the industrial fans control the airflow by controlling the adjusting door and baffle, and centrifugal fan motors has been running at maximum power condition regardless of the production size demand. 

In this case, not only production precision is restricted, but also causing a lot of energy waste and equipment loss, and leading to the production cost increases, shortening equipment service life, high maintenance cost to motor and mechanical transmission, and other electrical equipment.
Wear Resistant ID Fan

Most industrial fans and blowers use asynchronous motor and direct drive operation, so will cause large starting current, mechanical shock, electric protection features and so on. All these will affect the equipment service life, and it can not snap action protect equipment when there is mechanical failure, even pump damage and motor burning out. 

For the high power motor, no matter directly start or star triangle start, will have varying degrees impact on power grid, so State Grid Corporation of China regulation is that the large current devices are not allowed direct start.
High Temperature Fans for Dust Collecting

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