微电阻率井径组合仪单电机双驱动推靠器设计

Design of Pushing Device for Single Motor Double Drive of Micro-electrode Caliper Logging Tool

微球微电极井径测井仪推靠器驱动方式直接关系到仪器的整体性能。针对分动式四臂推靠器极板臂无法独立收放造成橡胶极板磨损问题,提出分动式六臂单电机双驱动推靠器,用静力学对推靠杆系统进行受力分析,研究推靠力的影响因素。通过设计辅助弹簧等优化了推靠力的适用范围,运用双回路控制电路驱动3组行程开关,使橡胶极板独立收放,实现了单电机双驱动推靠功能,减少极板磨损。通过压力平衡调节,使各杆系在井下运动自如,提高了仪器可靠性及使用效率。

Abstract： The pushing device drive mode is directly related to the overall performance of microsphere microelectrode caliper logging tool. Because pushing pad can not separately take back and release in the separate driving 4 arms calipers micro electrode logging tool, the rubber pad is worn. We propose the idea of using separate 6 arms single motor double drive pushing device. We analyze the force of pushing pole system by static mechanics and study the influence factor of pushing force. By auxiliary spring, the application range of pushing force is optimized. By double-loop control circuit driving three-group limit switch, rubber polar plate can independently take back and release to realize the pushing function by single motor double drive and decrease polar plate abrasion. By adjusting pressure balance, movement of each pole system is freedom under well, the reliability and application efficient of the tool are improved.