【作者】 张君；

【导师】 宋轶民；

【作者基本信息】 天津大学 ， 机械设计及理论， 2007， 硕士

【摘要】 随着油田开发的逐步深入,各种难动用储量(稠油井、出砂井)开始投入开采,这给采油工艺的配套提出了新的要求。电动潜油螺杆泵采油系统的研制就是在上述背景下提出的。电潜螺杆泵对于稠油出砂的斜井、定向井和水平井的开采具有无可比拟的优势。并且,由于该系统具有低投入和低运行成本等特点,在降低油田开发投资和运行费用等方面具有重要意义。潜油行星减速器是电潜螺杆泵采油系统中的重要传动部件,需在高温、高压的工况下长时间连续稳定作业。本文在分析了国内外现有潜油减速器的基本参数及现场使用或试验情况后,在已有的适合井下作业的传动方案基础上,提出了新型潜油减速器方案,即采用星轮减速器输出结构的K-H-V型渐开线少齿差行星齿轮传动。然后,本文以7英寸油井套管中的2极潜油电机为减速设计对象,基于常规机械设计计算,并利用变位系数封闭图法加以辅助,得到了合适的内啮合副齿轮参数设计方案。以星轮减速器输出机构为设计参考起点,针对井下现场要求,合理分配减速器内部设计空间,布置紧凑,经计算,各关键零件强度足够。其中,本文对该机构的行星齿轮进行受力分析得到了校核强度所需的时变载荷的显式表达,并指出前人文献里对该部分公式推导的错误。最后,总结了该新型减速器在限径约束下布置结构需要综合考虑的因素,并简要说明了潜油减速器完整设计还需考虑的工况及其它结构问题。本文的研究成果在某种程度上为我国潜油行星减速器设计领域提供了新的思路,同时也为星轮减速器在外径限制条件下的设计积累了理论计算及结构布置经验。更多还原

【Abstract】 With the in-depth development of oil-field, various difficult reserves (high viscosity oil well, sand well) were developed step by step to satisfy the needs, and new requirement has been asked to form a new technology of oil extraction. The E1ectric Submersible Progressing Cavity Pumping system (ESPCPs) is put forward in such background. It shows incomparable advantages in the application of slant wells, horizontal wells and directional wells whose oil is high viscous and has sand. Because of the characteristic such as low cost, this system has an important meaning in lower the oil-field development investment and expense of running it. Oil-submersible planetary gear reducer is an important transmission part of ESPCPs. It must continuously work for long time in the condition of high temperature and huge pressure.This thesis analyzes the basic parameter, spot usage and experiments of domestic and international current oil-submersible reducer. Base on the currently compatible design in well, a new idea is proposed, that is K-H-V involute planetary gear transmission with small tooth number difference using the structure of planetary reducer to output.Then, for reducing the rotate speed of the two pole oil-submersible motor in seven inches oil well, this thesis based on general mechanical design, using the closed diagrams of modification coefficients, finds feasible gear parameter. Consulting the structure of planetary reducer and the spot’s need, the space in reducer is distributed in reason. Through calculation, all of the key parts have enough intensity. The force of planetary gear in this mechanism is calculated, and an error in literature is pointed out.Finally, the factors which to think over in the design of this new reducer are concluded. The other problems need to solve in the condition of well are listed.The research gives a new idea in Oil-submersible planetary gear reducer designing to some extent. And accumulate experiences in the space distribution of planetary reducer when there is a diameter restriction.更多还原