自动修井机液压大钳液压控制系统的设计研究

Research on Hydraulic Control System of the Hydraulic Tong for Automatic Workover Rig

摘要: 我国目前面临着修井机自动化程度低的困境，要设计全新的自动化修井机成本高，与目前的低油价形势不适应，所以我们对目前的修井机升级改造成自动化修井机。自动化修井机的一个关键是管杆上卸螺纹自动化。本文依据设计的自动修井机液压大钳和动力卡瓦的功能和动作流程，对其液压控制系统进行了设计，并对升降液压马达和上卸螺纹液压马达进行了参数计算和选型。利用AMESim软件对液压钳的升降液压控制系统和上卸螺纹的液压系统进行了仿真，仿真结果表明设计的液压大钳的液控系统能够满足要求。

Abstract: At present, the difficulty for workover rig is low degree of automation in China. However, the cost of designing a new automatic workover rig is so high that it is not suitable for the situation of low oil prices, so we need to upgrade the current workover rig to the automatic one. For automatic workover rig, its tubing and rod thread screw on or off automatically is a key. The hydraulic tong, which applied to the automatic workover rig, is designed. According to its function and the process of action, we also design the hydraulic control system. For two kinds of hydraulic motors, one for elevating and the other for thread screwing on or off, we carry out their parameter calculation and selection. Likewise, we use AMESim to simulate the hydraulic control system of hydraulic tong and the hydraulic system for thread screwing on or off. The simulation results are consistent with the design of action.