再生发电制动技术在钻机绞车刹车上的应用

Application of regenerative electric power braking technique on hoisting drum brake of drilling rigs.

介绍了交流变频驱动和再生发电制动绞车的结构特点 ,通过对钻机绞车变频调速和再生发电制动工作特性的分析 ,说明了电动机再生发电制动的工作原理和过程 ,进而分析了再生发电制动技术在钻机绞车上应用的优越性 :(1)可使电动机在四象限运行 ,方便地实现电动机的正转、反转、加速、减速、制动等 ;(2 )能够可靠地实现绞车的防上碰下顿的保护功能 ;(3)可以方便地实现绞车的自动送钻功能 ;(4 )可以实现数字控制和异常情况的紧急刹车 ;(5 )减轻了配套使用的盘式刹车的工作量和摩擦片的消耗 ;(6 )在海上钻井平台 ,可容易地实现升程自动补偿 ;(7)简化了绞车结构 。

The characteristics of the rig drawworks driven by variable frequency motors are introduced. Based on an analysis of operational performance of variable-frequency regulating and regenerative electric power braking of the drawworks, the operating principle and process of regenerative electric power braking is described. And the advantages of applying the regenerative electric power braking on hoisting drum brake are indicated as follows: (1) realizing conveniently four-quadrant operation of the motor; (2) ensuring the drawworks running without bump; (3) achieving easily automatic feed and digital control and braking in emergency case.