Results 1 to 10 of about 28,572 (163)

Efficient evaluation model of beam pumping unit based on principal component regression analysis [PDF]

open access: yesScience Progress, 2020
The beam pumping unit is widely used in oil fields as an oil extraction machine. However, due to its structural characteristics and the changing conditions of underground reservoirs, there are many factors affecting the efficiency of the beam pumping ...
Zhewei Ye   +4 more
doaj   +3 more sources

Energy-saving mechanism research on beam-pumping unit driven by hydraulics. [PDF]

open access: yesPLoS ONE, 2021
Aiming to solve the problems of long transmission chain, large movement inertia of components and high energy consumption of pumping units, this proposes a new pumping unit with direct balance and hydraulic drive.
Hukun Yang, Jianping Wang, Hui Liu
doaj   +2 more sources

Positive Torque Modulation Method and Key Technology of Conventional Beam Pumping Unit

open access: yesEnergies, 2022
The large fluctuation of net torque and the existence of negative torque on the crank output shaft of the beam pumping unit are the decisive factors leading to its low efficiency and high energy consumption.
Jinchao Xu   +3 more
doaj   +3 more sources

Analysis of the safety of pumping units of pumping stations of machine water lifting in the function of reliability indicators [PDF]

open access: yesE3S Web of Conferences, 2023
The article presents ways of analyzing the safety of pumping units of pumping stations of machine water lifting in the function of reliability indicators, taking into account the complexity of analyzing the safety of pumping stations of machine water ...
Toirov Olimjon, Khalikov Salikhdjan
doaj   +1 more source

Improving the reliability of the operation of reclamation pumping stations by using self-starting electric motors [PDF]

open access: yesE3S Web of Conferences, 2023
The results of full-scale studies of unsteady processes during self-starting of electric motors at pumping stations are presented. The simulation of transient processes in the modes of self-starting of an asynchronous electric drive of a pumping unit is ...
Abidov Kudrat
doaj   +1 more source

Dynamic strength analysis of the key components of the beam-type pumping unit with dynamic tracking balance

open access: yesFracture and Structural Integrity, 2021
Aiming at the shortages of large reversing impact, high energy consumption and poor balance effect of conventional beam-type pumping unit, the design scheme of beam-type pumping unit with dynamic tracking balance is proposed. The load-displacement curves
Bo Wang
doaj   +3 more sources

PUMP [PDF]

open access: yesProceedings of the Third Workshop on Hardware and Architectural Support for Security and Privacy, 2014
We introduce the Programmable Unit for Metadata Processing (PUMP), a novel software-hardware element that allows flexible computation with uninterpreted metadata alongside the main computation with modest impact on runtime performance (typically 10--40% for single policies, compared to metadata-free computation on 28 SPEC CPU2006 C, C++, and Fortran ...
Udit Dhawan   +7 more
openaire   +1 more source

Optimization of Manufacturing Processes by Reducing the Costs of Tools and Equipment on Hydraulically Operated High-Pressure Technological Lines [PDF]

open access: yesMATEC Web of Conferences, 2022
Most technological manufacturing lines include hydraulically operated stationary tools, devices and equipment. During a manufacturing cycle, there are phases, usually short, in which part of the hydraulic cylinders of the drive systems concerned, with ...
Popescu Teodor Costinel   +5 more
doaj   +1 more source

Construction principle of automatic control system adjustable multi-engine drive water lift pump unit [PDF]

open access: yesE3S 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

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