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  2. 矿业 - 碾磨加工

碾磨加工

 WEG运用在磨机传动装置上的经验为矿山开采黑色及其他有色金属提供了最为可靠和高效的解决方案。 

对一个加工厂来说,加工过程中球磨机和半自磨机的使用方案必须按照不同矿物的不同特性来决定。 不管是精确的、可变的或是恒定的转速,高启动转矩,还是不同的耦合冷却装置,只要有需求,WEG都能从其宽泛的电气产品如中压电机和启动器,变压器,开关板等中挑选出符合需求的解决方案。像那些不间断粉碎矿物粒度的矿山,工作量非常大,为满足需求,工厂需要必备灵活的设备系统来缩减工作时间。 

WEG提供的正确的驱动设备系统可以满足绝大多数磨机厂家的需求。 

恒速

 

低速同步电机

同步电机在电机轴和齿轮辊之间使用空气离合器来确保启动转速的平稳,这种恒速的电机被广泛运用于磨机启动系统。 同步电机的使用也可以在外磁场的激发下补偿功率因素,他们可以设计成多极数,在不需要使用大型昂贵减速机的情况下,直接连接到齿轮辊上也可达到额定转速。除却高能效等级、功率因数补偿、高转矩和低起动电流外,不同负载下的恒定转速和低操作维护成本也是WEG同步电机广泛应用于磨机启动系统的主要原因之一。 

 

异步电机

For ball and SAG /AG mills with a single or double pinion, motors with squirrel cage rotor are normally used when constant speed and low starting current are required.  WEG induction motors (Master Line) are designed with air cooling system  (totally enclosed air-air cooling) or water cooling system (totally enclosed air-water cooling), high efficiency and reliability and separate slip ring chamber, avoiding contamination of the winding with the dust of the brushes.  In addition to the operating advantages of the wound rotor induction motor, WEG have developed a new motorized brush lifting devise which is responsible for the short circuit of the rotor when the motor reaches its rated speed, taking advantage of high starting torques and low starting current together with minimum brush and slip ring wear, drastically reducing mill shut down for maintenance.  In a speed variation range, slip energy recovery systems can be used together with the traditional starting system (liquid rheostat) aiming at recovering the energy dissipated form the rotor circuit to the main bus.

变速

 

单齿轮或者双齿轮驱动系统

用单齿轮或者双齿轮的装置来启动和控制中压电机的转速,使之能和半自磨机、球磨机或者高压辊磨机配套使用,MVW01系列变频启动器就是在艺术技术的基础上,通过IGBTs的多级结构,将电机的谐波电流尽量降到最低点。 

The load share resource that operates the two medium voltage units in a master-slave configuration allows driving high power mills.  WEG can offer a complete mill driving system for applications that require reliability, high availability, easy configuration and system updates such as the input switchboard, dry-type or oil phase-shifting transformer, frequency drive and low speed induction or synchronous motor.  The configuration of the input rectifier in a multipulse arrangement reduces the current and voltage harmonic distortions on the supply side, complying with the recommendations of IEEE 519.  The MVW01 frequency drive operates with 32-bit microprocessor in real time and provides precise speed/torque control for single or double control with load sharing.

 

制浆泵

制浆泵应用于选矿厂的磨机卸载和旋流加料过程。

<传统上,制浆泵都是由一台绕线转子异步电机和一台减速机协同驱动以达到泵的额定转速。

 或者,无齿轮传动也是可以的,舍去泵和电机之间的减速机,提高总体效率,也能降低维护成本、缩减维护时间。  

气旋进料泵和磨机卸载泵都是由高转速绕线定子异步电机和变频器驱动共同,这样做的目的是通过控制降低能量耗损来优化矿浆流。   

为达到此目的,电机的额定电流必须遵照特定的转矩曲线设定到最有效率的点上。

即便要求如此苛刻,传统齿轮传动的离心泵和隔膜泵,仍旧可以配备WEG电机和驱动系统在选矿厂里得以安装使用。

浮选机

WEG产品都是本着使用效率高、操作成本低的宗旨来设计制造的,可以满足浮选过程中的任何需求,确保以良好质量达到最好的效果。

了解我们的解决方案

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万高(南通)电机制造有限公司 | WEG (NANTONG) ELECTRIC MOTOR MANUFACTURING CO., LTD.
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