论文部分内容阅读
电动钻机设计中的一个新设想是取消直流发电机而只装设交流发电机并经过整流而得到直流电,图表示两种动力装置的比较。美国贝勒公司(Baylor Co.)曾发展了这样一种系统,可将三相交流电转换为可变电压的直流电,用来驱动绞车、泥浆泵和转盘上的标准牵引式电动机。这种系统看来在成本、操作和维护费用上较为经济。目前电动钻机一般有数台柴油机直流发电机组,为绞车、转盘和泥浆泵的电动机提供动
A new idea in the design of electric drilling rigs is to cancel the DC generator and install only the alternator and rectify to get the DC. The figure shows the comparison of the two types of power plant. Baylor Co. of the United States has developed a system that converts three-phase alternating current into variable-voltage direct current to drive standard traction motors on winches, mud pumps, and turntables. Such a system appears to be more economical in terms of cost, operation and maintenance costs. Currently there are several electric drill rig diesel generator DC units for the winch, turntable and mud pump motor to provide power