高速大扭矩全液压顶驱主传动系统研究

发布时间：2018-05-01 10:00

本文选题：顶驱 + 主传动系统　；参考：《吉林大学》2015年硕士论文

【摘要】：深部大陆科学钻探连续取芯钻进施工，对钻进转速、钻进工艺、取芯钻探效率和低成本提出了更高的要求。传统的转盘钻进方式采用单根钻杆钻进，效率低，操作劳动强度大，，并且容易发生井下事故。相比于转盘单根钻进，顶驱采用立根钻进，大幅度缩短了钻杆上卸扣的辅助作业时间，极大的提高了钻进效率。顶驱可在任意高度上驱动钻柱，并保证钻井液连续循环，能有效防止卡钻、蹩钻等井下事故发生，即便井下出现异常，也可及时处理，钻井安全性及钻机自动化进程取得阶段性跨越。国外顶驱技术比较成熟，电驱动顶驱和液压驱动顶驱都有系列化产品，但针对地质钻探的应用较少。而国内顶驱以电驱动顶驱为主，液压驱动顶驱的成熟产品较少。本文基于“国家深部探测技术与实验研究专项（SinoProbe-09-05）”子课题高速大扭矩全液压顶驱研制项目，重点研究全液压顶驱主传动系统。本文在总结国内外顶驱及其主传动系统发展现状的基础上，从主传动系统结构和液压系统两方面进行研究：结构方面重点研究整个齿轮箱的承载性能；液压系统方面重点研究闭式回路油液升温情况。首先，介绍了全液压顶驱总体结构和工作原理，重点研究了主传动系统传动方案和工作原理，并确定了关键技术参数。其次，利用Romax软件搭建齿轮箱的虚拟样机模型，对各个部件进行详细分析，结果表明箱体和轴的强度和刚度满足要求；轴承的疲劳寿命和安全系数满足实际工况要求；斜齿轮接触和弯曲强度安全系数均较高；齿轮修型后强度进一步提高，同时传动也更加平稳。然后，在研究闭式回路油液升温的原因以及泵和马达效率情况的基础上，利用AMESim软件搭建闭式回路热力学仿真模型，研究系统内部油液升温情况，结果表明合理的选择补油泵排量和控制好补油泵吸入油液温度可以保证油温温度在合理的范围内；为了控制好补油泵吸入油液温度，对油箱散热系统进行了研究，结果表明该散热系统能够起到降低油箱油温的作用。最后，样机实验测试表明高速大扭矩全液压顶驱的主传动系统的承载性能和闭式回路油温满足设计要求。
[Abstract]:Continuous coring drilling in deep continental scientific drilling puts forward higher requirements for drilling speed, drilling technology, core-drilling efficiency and low cost. The traditional rotary disc drilling method adopts single drill pipe, which has low efficiency, high working intensity, and is prone to underground accidents. Compared with single rotary disc drilling, vertical root drilling is used in top drive, which greatly shortens the auxiliary working time and greatly improves drilling efficiency. Top drive can drive drill string at any height, and ensure continuous circulation of drilling fluid. It can effectively prevent underground accidents, such as drilling jam and lame-drilling. Even if abnormal occurs in downhole, it can be dealt with in time. Drilling safety and drilling machine automation process has made a step-by-step leap. Overseas top drive technology is mature, electric top drive and hydraulic drive top drive have series products, but the application of geological drilling is less. Domestic top drive is mainly electric top drive, hydraulic top drive is less mature products. In this paper, based on the project of "Sino Probe-09-05", the main driving system of full hydraulic top drive is studied. On the basis of summing up the development of top drive and its main transmission system at home and abroad, this paper studies the structure of main drive system and hydraulic system. The hydraulic system focuses on the closed loop oil heating situation. Firstly, the overall structure and working principle of full hydraulic top drive are introduced, the transmission scheme and working principle of main drive system are studied emphatically, and the key technical parameters are determined. Secondly, the virtual prototype model of gear box is built with Romax software, and the results show that the strength and stiffness of the box and shaft meet the requirements, and the fatigue life and safety factor of the bearing meet the requirements of actual working conditions. The safety coefficient of contact and bending strength of helical gear is higher, and the strength of gear is further improved after modification, and the transmission is more stable. Then, on the basis of studying the cause of oil heating in closed loop and the efficiency of pump and motor, the thermodynamic simulation model of closed loop is built by using AMESim software to study the oil heating inside the system. The results show that the reasonable selection of the pump displacement and the control of the suction oil temperature of the filling pump can ensure the oil temperature within a reasonable range, and in order to control the suction oil temperature of the filling pump, the heat dissipation system of the oil tank is studied. The results show that the heat dissipation system can reduce the oil temperature of the tank. Finally, the prototype test shows that the load bearing performance of the main drive system and the oil temperature of the closed loop can meet the design requirements of the full hydraulic top drive with high speed and large torque.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE928

【参考文献】