Roots blower is widely used because of its simple structure and convenient manufacturing. In such a wide range of application fields, saving power consumption and saving production cost for enterprises is the bounden duty of motor enterprises and the general trend. Under this trend, high-efficiency roots blower emerges as the times require.
For most enterprises, electricity charge is the last capital that is not controlled by the enterprise. It is generally believed that the electric charge is difficult to control and it is natural to pay the electricity fee. As the power consumption of the electric equipment is determined by its mechanical and electrical characteristics, the subjective control is powerless. Obviously, this idea is wrong. Now the use of frequency converter on mechanical equipment energy-saving control skills to reduce the waste of power resources, save electricity costs
Roots blower is used in steel-making plant, cement manufacturing, chemical fiber and other industries. Before there is no speed regulation control, generally adopt the step-down starting, and after the normal operation, the motor runs at full speed, and the air volume is adjusted by the damper. In general, the opening of the air door is 50% – 80%, and the motor can only run at full load. The working efficiency of the motor is very low, resulting in great waste. The frequency converter is used to control roots blower, which is a power-saving method to reduce the aerodynamic force. Compared with the commonly used method of regulating the air volume of the air door, it has obvious power saving effect.
The advantages of energy saving retrofit of Roots blower with frequency converter are as follows:
1. Improve power factor and reduce reactive power loss
2. With the function of automatic energy saving control, the voltage can be adjusted automatically according to the load condition, so that the motor can run in the state of maximum efficiency
3. Frequency converter adopts low frequency output rated torque, which can control roots blower strongly
4. Saving energy and reducing operating cost
5. Prolonging the service life of Roots blower
6. When starting, there is no soft shock
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