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TECHNICAL PAPERS

Kinematic and Dynamic Simulation of a Dual-Beam Pumping Unit for Increasing Stroke and Reducing Force

[+] Author and Article Information
Lu Yi

Department of Mechanical Engineering, 066004 Yanshan University, Qinhuangdao, Hebei, People’s Republic of Chinae-mail: luyip0736@sina.com

Tatu Leinonen

Department of Mechanical Engineering, P. O. Box 4200, 90014 University of Oulu, Finlande-mail: tatu@me.oulu.fi

J. Energy Resour. Technol 126(4), 320-325 (Dec 21, 2004) (6 pages) doi:10.1115/1.1789524 History: Received November 27, 2001; Revised March 19, 2004; Online December 21, 2004
Copyright © 2004 by ASME
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Figures

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Dual-beam pumping unit for increasing stroke and reducing force
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The three-dimensional virtual mechanism of a dual-beam pumping unit
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Simulation kinematic curves of dual beam pumping unit (a) Displacement curves of sucker rod yr, counterweight yb1 (with left lower wheel) and yb2 (without left lower wheel), right upper wheel horizontal xw and vertical yw, displacement curves of right upper wheel horizontal xw and vertical yw. (b) Velocity curves of sucker rod vr, counterweight vw (having left lower wheel), right upper wheel horizontal vx and vertical vy. (c) Acceleration curves of sucker rod ar, right upper wheel horizontal ax and vertical ay.
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Simulation dynamic curves for simulation mechanism of dual beam pumping unit: (a) the curves of input torques Tb with counterweight and T without counterweight exerted onto joint J1 of crank and frame; (b) force exerted onto Joint J4 of upper beam and support link horizontal force Fx and vertical force Fy with counterweight, and horizontal force Fx0 and vertical force Fy0 without counterweight; (c) horizontal only forces Fx with counterweight and Fx0 without counterweight exerted onto joint J4 of upper beam and support link
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Dynamic simulation curves for virtual mechanism of dual beam pumping unit Horizontal force Fx and vertical force Fy with counterweight, and horizontal force Fx0 and vertical force Fy0 without counterweight exerted onto joint J3 of coupler and upper beam (a), joint J5 of frame and upper beam (b), and joint J6 of lower beam and frame (c), respectively

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