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- circulating pump rod 循环水泵挺杆
- Frequent leakage of mechanical seal of quenching oil circulating pump was a hard problem in ethylene production. 急冷油循环泵的机械密封频繁泄漏是困扰乙烯生产的老难题。
- 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。
- Cabinet heaters, circulating pump motors and other devices which draw relatively high currents may be powered locally. 引起相对较高电流的机柜加热器、循环泵电机及其它设备可以就地供电。
- Reliability design of V-belt drive get not only a small size??light wight but also high reliability in the circulating pump. 讨论了泵中V带传动的可靠性设计与传统设计比较,不仅根数少、尺寸小、质量轻,而且可靠性高。
- It consists of starting separator, boiler circulating pump, and other connecting pipes and valves on steam and water sides. 它包括启动分离器、炉循环泵及其它汽侧和水侧连接管、阀门等。
- 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。
- The applied plan is introduced of fre quency control system by the microco mputer for constant -pressure wa-ter supply to circulating pump stati ons,and the system is analysed. 介绍了微机控制变频恒压供水系统在循环泵站中的应用方案,并对系统进行了分析。
- Type LW pump is vertical single-stage single-suction volute centrifugal pump.It is used for circulating pump in power station and water drainage in mines, cities and farmlands. LW型泵立式单级单吸蜗壳离心泵,适用于大型火力发电厂作循环泵,也可作工矿、城市及农田建设的排水泵。
- Haohua astronavigation chemical co.,ltd. adopts high voltage frequency converter for motor speed adjustment of water circulating pump and achieves obvious effect. 摘要昊华宇航化工有限公司采用高压变频器进行循环水泵电动机调速，节电效果显著。
- Economics is studied on steam injector substituting the tube-shell heat exchanger and the circulating pump in the heating system of the thermal power plant. 针对热电厂供热系统采用升压加热装置改造热网加热器和循环水泵的可行性和经济性开展了研究。
- General central air condition system is composed of refrigerator, circulating pump, water supply pump, water divider, catchment device and end equipment. 常见的余热制冷中央空调系统由制冷机、循环泵、补水泵、分水器、集水器以及末端装置等组成。
- 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。
- 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。
- Methods A small Distributed Control System(DCS) composed of Programmable Logic Controller(PLC) and WinCC is used to realize the control of circulating pump by PLC programmingand WinCC configuration. 方法 利用可编程逻辑控制器PLC和 Win CC组态软件组成小型开放性集散控制系统 ( DCS) ;根据控制系统软件的设计要求 ;通过对PLC编程以及 Win CC的组态实现系统控制 .
- 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。
- Circulating pump are outside the vacuum salt heating system in the key equipment, and its performance, quality and performance is directly related to the production of crude salt production, quality. 循环泵是外加热式真空制盐系统中的关键设备，其性能、质量和运行状况直接关系到原盐生产的产量、质量。
- The unit consists of a refrigeration cooler, heat exchanger with vaporizer, circulating pump and thermostatic control in order to keep the temperature in the spindle system constant. 该装置由冷却器，带风扇的热交换器，循环泵和恒温控制系统组成，以便保持主轴系统的连续稳定温度。
- With the common problems in projects, presents the optimal design of circulating pumps. 结合工程常见问题，提出了循环水泵的最优化设计。
