1、 武汉科技大学本科毕业论文 I 摘 要 自动垂直钻井系统 AADDS 通过控制均匀分布在与钻杆相连的导向套内的三个液压纠斜集成块的协调动作来实现主动纠斜。液压纠斜集成块由单柱塞泵、电磁阀、纠斜液压缸以及浮动油箱等构成。在井下，纠斜集成块需承受高温、高压、强震等复杂恶劣环境，使 得纠斜集成块液压系统在井下与地面上的工作特性可能会有很大差异。因此对纠斜集成块液压系统在井下恶劣环境下的工作特性研究，对于保证纠斜集成块在井下的可靠工作具有实际工程意义。 本文主要是对以前的井下高压环境模拟试验台系统的改进 。为了能掌握在高温高压下 纠斜集成块性能的一些参数，现已研发出一套超深井井下高压环境模拟试验台，但
2、是在实际的实验中发现，整个试验台占地空间太大，且不方便实验的操作，同时液压动力源的设计也有不合理之处，因此需要对其进行改进。此次设计主要是对原实验台的液压泵站进行改造，即将原来两个分离的液压泵站合并成一个完整的泵站。改造后的泵站除了结构更加紧凑外，还实现了高低压泵互补，即减少了给高压油缸供油时间又能保证所需的实验压力。论文首先根据系统要求设计了液压原理图，并通过计算确定各元件选型；其次对液压泵站上的阀块进行设计 ，包括两个阀块的装配图和零件加工图；最后是系统的装配图的绘制。 关键词： 自动垂直钻井系统； 高压试验台； 液压泵站； 高压液压元件 武汉科技大学本科毕业论文 II Abstract
3、Automatic vertical drilling system AADDS realize active anti-deviation by controlling the three hydraulic rectification integrated block which equally distribute in the guide sleeve connected with the drill pipe. Hydraulic rectification integrated block include a single plunger pump, solenoid valve,
4、 hydraulic cylinder and a floating oil tank straightening. underground, rectification integrated block have to sustain a complex and hostile environment such as high temperature, high pressure and strong motion. it make a different of operating characteristics of the rectification integrated block h
5、ydraulic system underground and on the ground. So the study on the operating characteristics of the rectification integrated block hydraulic system underground where the environment is harsh have actual engineering significance ,which can ensure work of the rectification integrated block in undergro
6、und is reliably. This article is a former underground high-pressure environment simulation test bed system improvements. To be able to grasp at high temperature and pressure Correct performance of some of the parameters oblique manifold, has developed a set of ultra-deep underground high-voltage env
7、ironment simulation test bench, but in the actual experiment, the entire test rig occupies too much space, and inconvenient experimental operation, while the hydraulic power source design also has unreasonable, therefore it needs to be improved. The design is mainly the original bench hydraulic pump
8、 station renovation, coming originally two separate hydraulic pump station combined into a complete pumping stations. After transformation, the pumping station in addition to a more compact structure, but also complement each other to achieve a high pressure pump, which reduces the high pressure cyl
9、inder injection time can guarantee the required test pressure. Firstly, according to the system requirements and design a hydraulic schematic diagram and determined by calculating the component selection； Secondly pump station valve block design, including two valve block assembly drawing and parts
10、processing map； final assembly of the system mapping. Keywords: Automatic vertical drilling system； high-pressure test rig； hydraulic pump station； pressure hydraulic components 武汉科技大学本科毕业论文 1 目 录 1 绪论 . 1 1.1 本课题的研究意义 . 2 1.2 井下高压环境模拟试验台研究现状 . 3 1.2.1 高压环境模拟试验台 . 3 1.2.2 VDS 液压集成块 . 3 1.3 深水液压系统研究现
11、状 . 4 1.4 本文的研究内容 . 5 2 液压系统的设计 . 6 2.1 井下高压模拟试验台的液压系统 . 6 2.2 试验台 改进设计 . 7 2.2.1 实验台改进要求 . 7 2.2.2 改进后的液压系统方案设计 . 7 3 液压元件的计算和选型 . 9 3.1 液压泵的确定 . 9 3.1.1 液压泵选用原则 . 9 3.1.2 液压泵组的参数计算和选型 . 9 3.2 阀类元件的选用 . 11 3.2.1 换向阀的选择 . 11 3.2.2 溢流阀的选择 . 12 3.3 油箱的设计 . 13 3.3.1 油箱的设计要点 . 14 3.3.2 油箱容积的设计计 算 . 14 3.3.3 油箱结构设计及尺寸确定 . 16 3.4 其他 . 16 3.4.1 蓄能器选择 . 16 3.4.2 液压管路 . 17 4 液压阀块的设计 . 18 4.1 阀块设计中的术语 . 18 4.2 阀块体的设计要求 . 18 4.3 液压阀块设计规范 . 19 4.4 阀块体的设计 . 20 结束语 . 23 参考文献 . 24 致 谢 . 26
