一种行星齿轮长冲程抽油机的换向机构研究

目前,在油田开采中,主要采用游梁式抽油机将原油提升到地面。游梁式抽油机可靠耐用,但是存在运动速度不合理、平衡效果不好、浪费大量电能、增加原油生产成本等缺点。尤其在原油开采的中后期及高粘度稠油开采过程中,需要一种长冲程、大载荷、低冲次数的抽油机。为此介绍一种基于行星齿轮传动和变频调速技术的新型抽油机,阐述了行星齿轮传动与换向的工作原理,说明了长冲程、低冲次数的实现方法,参数为冲程6 m,冲次2~2.5次/min,悬点载荷120 kN。利用变频器调速技术,通过监测行星齿轮和回转主轴的运动轨迹,可以对电动机的转速进行实时调节,避免了在换向时的速度突变对齿轮等机械设备产生的冲击。

A Kind of Long- Strike Oil Pumping Machine Using Planet- Gear

Nowadays the beam-pumping unit is used to elevate crude oil to the ground.This kind of pumping machine is reliable and durable,but there are also several defects such as unreasonable speed,bad balance effect,large electric energy waste and high cost of crude oil.So a new type of oil pumping unit which have long-strike,large load and few strike times is needed to satisfy the exploitation of crude oil,especially in the later period of oil field and the exploitation of thick oil with high viscosity.A new type of oil pumping unit based on planet-gear and frequency conversion technology was introduced.It stated the working principle of planet-gear in this machine and the method how to achieve long strike and few strike times.The result shows that it obtains 6 m strikes,2 to 2.5 strike times per minute and 120 kN load and the speed of electrical engineering can be adjusted in time using frequency conversion technology by keep watching on the moving track of the planet-gear and spinning main axis,avoiding the strike to the mechanical equipments such as gear and so on when the speed changes.