Products
MengziPermanent magnet motor direct drive fan technology
Category:
MengziFan series
Product Description
Product Details
Traditional driving mode of cooling tower fan
Asynchronous motor-drive shaft-reducer (M type or H type)-impeller
Permanent magnet direct drive mode of Lingque tower fan
Permanent magnet motor-impeller. The transmission shaft, reducer and the corresponding coupling, lubricating oil system, etc. are omitted.
Advantages of permanent magnet direct drive
1) The permanent magnet motor is used to directly drive the cooling tower fan, which greatly simplifies the transmission system, not only improves the transmission efficiency of the system, but also greatly improves the stability.
2) The special frequency converter of permanent magnet motor can adjust the speed and increase the speed in summer, which can increase the air volume and solve the long-standing problem of high water temperature in summer of cooling tower. Decelerate in autumn and winter to reduce air volume and power consumption.
3) The special frequency converter can be soft-started, and the starting time can be set by itself, which can reduce the starting current, reduce the impact on the power grid, and protect the equipment.
4) The permanent magnet motor has high operating efficiency, up to 96%, and high power factor, up to 0.97.
5) The permanent magnet motor has a small maintenance amount, and only needs to add 3# lithium-based grease to the front and rear bearings every 3000h.
6) Avoid the cumbersome problems caused by the drive shaft, reducer, coupling and oil system, reduce the amount of later maintenance, and reduce operating costs.
After the cooling tower of Shandong Hualu Hengsheng is replaced by a permanent magnet direct drive fan, there is basically no need for manual maintenance at ordinary times, which saves manpower and material resources and reduces environmental pollution in the production process.
New external reducer drive fan technology
Reducer built-in ills
In the traditional driving mode of cooling tower fan, the motor is outside the wind simplicity, and the transmission shaft passes through the wind drum and is connected to the reducer in the wind simplicity, that is to say, the transmission shaft itself is not decelerated. Reducer built-in ills in:
1) The transmission shaft rotates at high speed all year round, and fatigue fracture occurs from time to time, which leads to the failure of related equipment.
2) The reducer runs in the high temperature and humidity environment in the tower all the year round, with large maintenance, frequent disassembly and debugging, and high cost.
3) When the reducer fails, the circulating water cannot be stopped, and the personnel enter the high temperature and humidity environment for maintenance, which is dangerous.
4) occupy a larger volume, pushing up the cost of cooling tower construction.
