【作者】 王宇臣；

【导师】 常玉连；

【作者基本信息】 大庆石油学院 ， 油气田地面工程， 2010， 硕士

【摘要】 根据当前油田修井作业的发展需要,提出了一套新型修井井口机械化作业方案。本文以机械化修井作业装置为研究对象,在对其系统方案、主机工作原理及作业流程充分掌握的前提下,提出主机液压系统的设计要求,并对其执行机构的运动及负载进行工况分析。在此基础上,根据计算和相关设计经验,确定主机液压系统参数、拟定液压系统图并选定液压元件,辅以油箱组件及液压泵组的结构设计并合理选择、排布系统管路,直至完成样机液压泵站的搭建。提出主钳液压系统动态特性的研究要求,对其研究内容、方法进行阐述,并指出正确推导系统数学模型对其动态特性研究的必要性及意义。对解析建模法进行理论研究,包括系统微分方程、动态方程的拉普拉斯变换及传递函数的意义及研究方法。对主钳液压系统进行分析并将其简化为阀控非对称缸、阀控马达及定量泵—溢流阀等液压单元;基于解析建模法,应用物理学、流体力学、运动学、动力学定律和方程推导其数学模型及传递函数,为仿真试验奠定理论基础。基于AMESim软件搭建主钳卡盘(行星爪)系统及刹带制动系统的仿真模型并进行变参数仿真试验。对试验结果进行分析,从而掌握液压系统的动态特性及系统参数随时间的变化情况,并为系统的优化设计提供合理化建议。样机试制完成后,通过现场试验肯定了主机液压系统的设计,并就试验数据与预期之间的误差及其成因进行了相关分析;将试验测得的主钳液压系统的动态特性与仿真结果进行了比较和分析,验证了AMESim仿真模型的正确性以及将其作为系统动态特性研究平台的可行性。更多还原

【Abstract】 According to the developmental needs of the current well servicing operation,a scheme for the new-type wellhead workover mechanical operation was formulated. In this paper, study on mechanized workover equipment, proposed host hydraulic system design requirements based on fully grasp the system program, host operating principle, structure and workflow, carried out the working conditions analysis of executive mechanism movement and load. On the basis, according to calculation and related design experience, determine the host hydraulic system parameters and develop the hydraulic system diagram and select hydraulic components. Supported by structural design of fuel tank components and hydraulic pump groups, and layout system pipeline by rational choice, until the final completion of prototype structures hydraulic pump station.Proposed the research demand of main clamp hydraulic system dynamic characteristics, described its research contents and methods, pointed out the necessity and significance of dynamic characteristics study by the correct derivation of system mathematical model. Carried out theoretical studies on analytical modeling method, including the system differential equations, dynamic equations of the Laplace transform and the significance of transfer function and research methods. Analyze the main clamp hydraulic system and simplified it as valve controlled asymmetric cylinder, valve-controlled motor and quantitative pump - relief valve and other hydraulic units; based on analytical modeling method, applied physics, fluid dynamics, kinematics, dynamics law and equations to derivate mathematical model and transfer function, which lay the theoretical foundation for simulation.Build the main clamp Chucks (Jaw) and braking system based on AMESim software to simulate with experiments varying parameters. The test results are analyzed in order to master the dynamic characteristics of hydraulic systems and system parameters changes over time, and propose rationalization suggestion for system optimal design. When Prototype trial is completed, confirmed the host through the hydraulic system design by field test, analyze the causes and error between the test data and expected; Analyzed and compared the main clamp hydraulic system’s dynamic characteristics between on-site test and simulation results, which verify the correctness of AMESim simulation model and the feasibility as the dynamic characteristics system platform.更多还原