Results 11 to 20 of about 255,812 (300)
Wear issues of pumping units [PDF]
E3S Web of Conferences, 2021 The article presents the possibility of increasing the service life of pumping units. Particular attention is paid to the regulation of the speed of rotation of the pumping unit. There are some assumptions in the mathematical model that do not affect the final result. The factors influencing the operating mode are given.
Ishnazarov Oybek +4 more
openaire +2 more sources
Construction principle of automatic control system adjustable multi-engine drive water lift pump unit [PDF]
E3S Web of Conferences, 2023 The article discusses the issues of the principle of constructing an automatic control system for a multi-motor controlled electric drive with an electrical connection along the rotor chain of asyn-chronous electric motors with phase rotors and a common ...
Khamudkhanova Nargiza +2 more
doaj +1 more source
Dynamic coupling modelling and application case analysis of high-slip motors and pumping units.
PLoS ONE, 2020 To solve the issues and difficulties in the high-coupling modelling of beam pumping units and high-slip motors, external characteristic experiments of high-slip motors were performed where the external database and characteristic correlation equations of
Ziming Feng +5 more
doaj +1 more source
Frontiers in Energy Research, 2023 Aiming at the method of solving the optimization scheme for urban tidal drainage pumping stations during heavy rainfall below the urban drainage design standard, and the problems such as the mismatch between the head and water level of pumping stations ...
Gong Yi, Zou Wenhao
doaj +1 more source
Research on mechanical characteristics and safety of working platform in rod pumping process
Advances in Mechanical Engineering, 2022 Rod pumping on offshore platform provides a solution to low efficient extraction of offshore heavy oil and the safety of working platform is the prerequisite for the implementation of this new technology.
Feng Dehua +4 more
doaj +1 more source
Известия высших учебных заведений: Проблемы энергетики, 2021 TARGET. The purpose of this work is to develop a method for diagnostics of equipment of sucker rod pumping units (SRPU) during operation according to the parameters of the wattmetrogram. A wattmetering module is used as a measuring element, the developed
V. A. Manakhov, A. N. Tsvetkov
doaj +1 more source
Theoretical investigation of the more suitable rare earth to achieve high gain in waveguide based on silica containing silicon nanograins doped with either Nd3+ or Er3+ ions [PDF]
, 2014 We present a comparative study of the gain achievement in a waveguide whose active layer is constituted by a silica matrix containing silicon nanograins acting as sensitizer of either neodymium ions (Nd3+) or erbium ions (Er3+).
Cardin, Julien +3 more
core +6 more sources
Mechanical Analysis and Kinematic Simulation of Reversing Mechanism for Gear Guide-rod Pumping Unit
Jixie chuandong, 2021 Aiming at the low stroke times motion characteristics badly of beam pumping units，a reversing mechanism for gear guide-rod pumping units is analyzed. The reversing mechanism is mainly composed of a long rod incomplete gear，a rack moving frame，a roller ...
Jun Shao +3 more
doaj
Development and Application of Ball Screw Pumping Unit
Shiyou jixie, 2021 At present, 12,000 rod pumped wells are implementing intermittent pumping system in the Daqing Oilfield, however, due to insufficient downhole feed flow, the use of conventional walking-beam pumping unit seriously affects the economic, efficient, energy ...
Zheng Dongzhi
doaj
Similarities and differences of pumping conventional and self-compacting concrete [PDF]
, 2010 In Practice, Self-Compacting Concrete (SCC) is Considered as a Simple Extension of Conventional Vibrated Concrete (CVC) When Pumping is Concerned. the Same Equipment, Materials, Pumping Procedures and Guidelines Used for CVC Are Applied When Pumping SCC.
AN Ede +12 more
core +2 more sources