摘要
简要介绍了管柱伸缩器的结构、工作原理及用途。通过分析和计算详细说明平衡塞在管柱伸缩器设计中的作用，只有对平衡塞尺寸进行合理设计才能够保证管柱伸缩器的有效行程，充分发挥其管柱补偿作用，满足整套工具的设计要求。
The structure,work principle and application of tubing telescopic unit is introduced.The key role of the equilibrium plug design is explained with analysis,and it is concluded that right sizing of the plug is essential to ensure the effective stoke length and thus to guarantee the compensation function of the unit.
出处
《石油矿场机械》
1999年第6期49-50,共2页
Oil Field Equipment
