New Pumping Unit's Innovative Design And Analysis

In this paper, the ARIZ(Algorithm for Inventive-Problem Solving)is used to analyze a variety of problems and contradictions of pumping unit , and the Methods solving the existing problems are got and a kind of large loads, long stroke, low-frequency stroke, smart regulation, efficient energy-saving features of the non-beam pumping unit design Program are determined.New pumping unit uses a new intelligent digital control technology and variable frequency speed control for external rotor torque low-speed large rare-earth permanent magnet synchronous motor, and multi-root consisting of wire rope and the friction wheel friction drive traction way, link the sucker rod and balance system directly connected through a flexible connector means to achieve the non-gear transmission, reducing the energy-loss in the pumping system.By selecting W-shaped winding ways and Movable pulley for Magnification rate 2, the total load torque on the motor shaft of the new pumping unit is equal to the half of the sum of load torque and torque balance, and the load of the motor shaft axle is equivalent to the half of the sum of load and balance load.According to pumping units' the structural arrangement and the load, finite element analysis and optimization design of the main components of pumping units was been done by three-dimensional software, and its stability in the various kinds of operating conditions was checked.By the way of measuring the traction rope and adjusting alone, it reduces the harm leaded by an imbalance of rope traction system operation, At the same time, it uses finite element analysis to analyze the law of the wire rope's stress distribution, which in the traction system, in the condition that the friction coefficient was changed because of the change in the work environment.Through the actual operation in the oil field, the good effects of the new pumping has been got, and the indicators are better than the industry standard.