自动修井机液压闭口钳设计研究

发布时间：2018-11-25 22:01

【摘要】：随着石油需求量的不断增加,油井越来越多,油井故障时有发生,修井作业越来越频繁。但是现在的修井作业自动化程度低,作业时间长,工人劳动强度大,亟需发展更快、更安全的自动修井技术。本文充分调研了国内外修井作业中液压大钳和动力卡瓦的现状,根据自动化修井作业的要求,设计了一种新型液压闭口钳。本文设计的自动修井机液压闭口钳包括旋扣钳、冲扣钳、背钳、液压钳导轨和动力卡瓦。液压钳导轨起支撑作用,是三个钳体和动力卡瓦的安装基础,同时还有运移液压钳的作用;动力卡瓦安装在液压钳导轨的升降导轨上,动力卡瓦夹持管柱;背钳上蜗轮驱动的齿轮与升降导轨上的齿条相啮合,蜗杆传动有自锁功能,背钳钳心夹紧管柱,提供上卸扣的反扭矩;冲扣钳在上扣结束和卸扣开始时冲扣;旋扣钳进行快速上卸扣。对旋扣钳的齿轮传动系统、背钳的蜗杆传动系统和齿轮齿条传动系统进行设计计算。利用材料力学理论对竖直导轨和牙板销轴进行计算校核。运用ANSYS Workbench软件对旋扣钳连接板、卡瓦体和卡瓦牙等进行有限元分析,得到应力云图和位移云图,满足刚度和强度要求。根据液压闭口钳的动作要求和上卸管柱工作流程,设计液压系统图,并对液压元件进行计算选型。利用AMEsim软件对液压系统进行仿真,仿真结果与设计的动作一致。
[Abstract]:With the increasing demand for oil, more and more oil wells, oil well failures occur from time to time, workover operations are more and more frequent. However, the automation of workover is low, the working time is long, the labor intensity of workers is large, and it is urgent to develop faster and safer automatic workover technology. In this paper, the present situation of hydraulic pliers and dynamic slips in workover operation at home and abroad is investigated. According to the requirements of automatic workover operation, a new type of hydraulic closing pliers is designed. The hydraulic closing pliers of the automatic workover machine designed in this paper include rotary clamp, punching clamp, back clamp, hydraulic clamp guideway and power clamping. The hydraulic clamp guide rail plays a supporting role, which is the basis for the installation of the three clamps and the power slips, as well as the role of the moving hydraulic clamps, the power slips are mounted on the lifting guide rails of the hydraulic clamp rails, and the power clamps hold the pipe strings; The gear driven by the worm wheel on the back pliers meshes with the rack on the lifting guide rail, the worm drive has the function of self-locking, the back pliers clamp the pipe string to provide the reverse torque of the upper buckling, and the punching pliers rush at the end of the upper buckle and the beginning of the buckling. Fastening tongs are used for quick loading and unloading. The design and calculation of gear transmission system, worm drive system and gear rack transmission system are carried out. The vertical guide rail and plate pin shaft were calculated and checked by material mechanics theory. By using ANSYS Workbench software, the finite element analysis of the connection plate, the sliver body and the teeth of the clamping clamp is carried out, and the stress cloud diagram and the displacement cloud diagram are obtained, which meet the requirements of stiffness and strength. The hydraulic system diagram is designed according to the action requirement of hydraulic closed clamp and the working flow of unloading pipe string, and the hydraulic components are calculated and selected. The hydraulic system is simulated by AMEsim software, and the simulation result is consistent with the designed action.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE935

【参考文献】