减震器设计毕业设计论文.docVIP

毕业设计（论文） PAGE 减震器设计 摘要：在钻井作业中，由于井底凹凸不平造成钻头频繁跳转，如果钻头与钻铤直接连接，则整个钻蛀将于钻头一起加速上下运动，产生强烈的震动，破坏最优钻井条件，降低钻头和钻具寿命。甚至破坏钻井设备。液压减震器不同于单纯以硅油等液体为工作介质的液压减震器，亦不同于单纯采用减震弹簧作为弹性元件的机械减震器。该减震器是在二者的基础上，克服了单向减震器的缺点，集成二者的优点而研发的新型井下工具。它具有弹性刚度自动调节.连件强度高.性能稳定.工作可靠.工作寿命长等有点。 本文研究的主要主要内容有：对液压减震器的结构设计，结构设计主要是确定减振器的类型、布置形式、安装角度和选用数量，这是进行尺寸设计的基础。对液压减震器的尺寸设计，尺寸设计的过程主要包括相对阻尼系数以及最大卸荷力的确定，减振器工作缸、活塞、以及相关零部件的尺寸计算完成结构设计与尺寸设计后应对减振器的强度和稳定性进行校核，校核的结果应符合国家相关技术标准。 本文的研究成果对减振器的进一步研究有重要的理论和实际应用意义. 关键词：液压式； 减振器；液压缸 Shock absorber design Abstract: In the drilling operation, due to the bottom hole uneven causing frequent jumps of the drill bit, drill bit and drill collars are directly connected, the entire borer will drill with accelerated up and down movement, produced a strong shock, destruction of the optimum drilling conditions, reduce drill and drill life. Even destruction of the drilling equipment. Hydraulic mechanical drill string shock absorber is different from the pure liquid silicone oil as the working medium hydraulic shock absorber, mechanical shock absorbers are also different from the simple shock absorber spring as an elastic element. The shock absorber is on the basis of the two, to overcome the shortcomings of the one-way shock absorber, to integrate the advantages of both the research and development of new down hole tools. It has automatic adjustment of the elastic stiffness. Even pieces intensity. Stable performance and reliable work. Long working life a little. The main content of this study :The design to the structure of the gasification type shock absorber. It mainly determines the types of the shock absorber, layouts, the angle of installing and the quantity of selecting, these are the foundation of the designing of the sizes.The design to the size of the gasification type shock absorber. It includes relative damping coefficient, the determination of the biggest discharge strength, and the computing of the sizes of work cylinder, piston, connecting rod, valve and related spare part