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- pumping rod sealing device 光杆密封器
- Companies are producing various specifications of the production wellhead equipment, casing head, tubing head oil tree, rod sealing device; 公司现生产各种规格的采油井口装置、套管头、油管头采油树、光杆密封器；
- Wire line flexible pumping rod is a coiled rod with sealing wire line. 钢丝绳柔性抽油杆是一种特种密封钢丝绳的连续抽油杆。
- Manifolds can be added to a control valve sealing device. 可以给阀组加一个阀的密封控制装置。
- Worn crankcase piston rod seals O-rings on. 曲轴箱柱塞连杆O型圈磨损或柱塞衬套磨损。
- Worn crankcase piston rod seals. 曲轴箱连杆密封件损坏。
- The well-head rod sealing of rod pumping unit and its development 有杆抽油机井口光杆密封的发展
- Abstract In adopting API method, the kinetic model of a multistage pumping rod system was simplified into mul tiple lumped masses connected in series by springs. 采用API方法时，把多级抽油杆系统动力学模型简化成由多个弹簧串联多个集中质量。
- By analysis and comparasion, it is proved that the newly simplified kinetic model of the multistage pumping rod system is more accurate and more reasonable than the kinet... 经分析和比较证实，现简化的多级抽油杆系统动力学模型比用前方法简化的长冲程抽油机的系统动力学模型更为精确合理。
- The follow-up centering sealing device of rod of pumping wellhead and its application 随动对中抽油井口光杆密封装置的研究与应用
- During oil production, pumping rod is eccentric in the long oil tube, in which flow of the swabbed fluid can be regarded as an unsteady flow of second-order fl. 在采油过程中，由于油井较深的缘故，抽油杆在油管中是处于偏心位置的，可以把聚驱井抽汲液在井筒中的流动视为二阶流体在内管做轴向往复运动的偏心环空中的非定常流动。
- It features adopting new-type pneumatic sealing device, special-shaped impellers and pre-segregation system. 其特点是引入了新型气动密封装置、异形叶片与预分散系统。
- This effect not only knocks down strength of pumping rod but also rubs through oil tube wall, leading to the oil well unable to work and economic loss of the oil field. 偏磨使抽油杆磨损,降低了抽油杆的强度,造成抽油杆断裂,磨穿油管壁,影响油井正常工作,给油田带来较大的经济损失。
- On97 st. acroos the park. That Italian grocery store has everything you need. It sells bottles, caps, siphon tube and sealing device. 在哪里可以买到给啤酒瓶封口（盖）工具?啤酒已经酿上了，周末就可以装瓶，但只有酒瓶和平盖，不知道需要什么工具才可以把瓶盖压上。
- Angio- Seal device was successfully deployed in patients 98.4% (62/63), 1 case had fai led. 应用Angio -Seal装置血管闭合成功率 98 4%25 (6 2 / 6 3)。
- It can be used in antomatic eddy testing of the tubings with joints,and also in the automatic testing of pump rod. 该设备主要用于带接箍油管的全自动化涡流探伤,也可用于抽油杆的自动检测。
- On 97st. acroos the park. That Italian grocery store has everything you need. It sells bottles, caps,siphon tube and sealing device. 在哪里可以买到给啤酒瓶封口（压盖）的工具?啤酒已经酿上了，周末就可以装瓶，但只有酒瓶和平盖，不知道需要什么工具才可以把瓶盖压上。
- Two ends of the mixing axis that articulates with the mixing silo are loaded quadruple axle end seal device. 筒体与轴两端的相连处装有四重轴端密封装置。
- This equipment is made up of kiln body, support device, supporting device with shelf, moving kiln head, sealing device for kiln tail, burning device and etc. parts. 该设备由筒体、承装置、档输支承装置、动装置、动窑头、尾密封装置、烧装置等部件组成。
- The design plan of the VFD exhauster without vent is introduced. The key technique and the characteristics of the vacuum header,seal device and vacuum box are focused on. 在介绍无排气管VFD立式排气机的结构设计方案的基础上,重点讨论了真空头、封口装置、真空盒的关键技术及其特点。
