Results 71 to 80 of about 2,998,373 (268)
Power Saving Application of Permanent Magnetic Drive Technology on the Beam Pumping Unit
Shiyou jixie, 2017 In view of the issue of large working load fluctuation and power consumption of the beam pumping unit, based on the working principle and energy-saving features of the permanent magnetic drive technology, a new energy-saving scheme has been proposed to ...
Du Yi, Zhou Aiguo
doaj
POWER-EFFICIENCY ANALYSIS OF OIL WELL SYSTEMS WITH SUCKER ROD PUMPING UNITS
Известия высших учебных заведений: Нефть и газ, 2015 The purpose of this paper is to analyze the power efficiency of oil well systems with sucker rod pumping units. For this study a chain-drive of HRC 80-6-02 type and a similar performance drive HRC 80-6-02 balancer pumping unit were selected. Based on the
A. M. Sagdatullin
doaj +1 more source
Advanced Materials, EarlyView.Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare +9 more
wiley +1 more source
MODELING OF DYNAMOMETER CARDS IN QUASISTEADY OPERATION MODES OF SUCKER ROD PUMPS
Известия высших учебных заведений: Нефть и газ, 2015 The article presents the dependences, permitting to calculate the fluid level in the annulus of the sucker rod pump (SRP) at step changing of the beam-pumping unit actions number and to simulate the SRP dynamometer cards .
V. D. Kovshov +2 more
doaj +1 more source
Advanced Materials, EarlyView.Mobile‐atom percolation underlying β‐relaxations fundamentally dictates the crystallization pathways of phase‐change materials. High‐frequency ultrasonic excitation dynamically modulates this critical mobility percolation network, substantially accelerating the crystallization process.
Yu‐Yao Liu +11 more
wiley +1 more source
Møte i Styret for BIBSYS-konsortiet 19-02-2021 [PDF]
, 2021 Saksdokumenter for møte i Styret for BIBSYS-konsortiet 19/02 2021Saksdokumenter for møte i Styret for BIBSYS-konsortiet 19/02 ...
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Experimental Study on Hydraulic Coupling for Pumping Unit
Shiyou jixie, 2016 Using the hydraulic coupling gearbox power unit, and integrating the adjustable speed motor, coupling and gearbox to one power unit could reduce the energy consumption of the beam pumping unit.
Fu Yarong +6 more
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Motion Analysis of Double Crank 2K-H Gear Train Large Swing Angle Reversing Device
Jixie chuandong, 2021 Aiming at the shortcomings of current beam pumping units with small stroke，large energy consumption，and poor movement performance，as well as the general problem of low reliability and unstable transmission of beam less pumping units，a design scheme of ...
Bingyi Li +6 more
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Biohybrid Crawling Robot With Spiral‐Spring Backbone and Inclined Legs for Enhanced Locomotion
Advanced Materials, EarlyView.We present a biohybrid crawling robot integrating a muscle ring with a flexible skeleton combining two complementary structural elements. The spiral‐spring backbone enables large‐amplitude bending without compromising axial stability, while outward‐inclined legs with unequal front–rear lengths effectively convert deformation into directional strides ...
Tomohiro Morita +2 more
wiley +1 more source
Giant Anisotropic Spin Absorption in Chiral Hybrid Semiconductors
Advanced Materials, EarlyView.Researchers uncover that chiral hybrid organic–inorganic semiconductors absorb spin differently depending on its polarization direction. This anisotropic spin absorption is primarily driven by the local symmetry breaking within the layered structure.
Cong Yang +12 more
wiley +1 more source