Brief introduction of Xu Hua's invention

Brief Introduction of the Invention: The beam pumping unit is an energy-saving pumping unit developed and designed by our factory. This machine is composed of a pair of swing rods on the basis of conventional pumping unit. The swinging rod is arranged between the crank and the connecting rod, one end of the swinging rod is hinged with the lower joint of the connecting rod, and the other end is fixed on the bracket through an adjustable support shaft. When the whole machine is running, the crank rolls back and forth on the track of the swing rod through the pin shaft and the roller on the crank, so as to drive the swing rod to make a fan-shaped swing around the support shaft at a certain angle, and at the same time, the swing rod pulls the connecting rod and the cross beam, and pulls the walking beam and the donkey head, so that the rope hanger and the sucker rod linearly reciprocate up and down. The working principle of other parts is the same as that of conventional pumping unit. Stable operation, low noise and obvious energy saving effect. First, the key to energy saving lies in the pendulum. It makes full use of the pumping unit in the next stroke (that is, the non-working stroke), the pump hanging down to do work to improve the pendulum balance system, so that it has certain potential energy. When the working stroke comes, the potential energy of the swing rod will be released to help the motor do work on the upper stroke (that is, the working stroke), which can greatly reduce the power consumption of the motor and achieve the purpose of energy saving. Second, the pendulum balance system is close to direct balance, which makes the balance of pumping unit more reasonable. In addition, the upper stroke of the pumping unit is slower than the lower stroke, the acceleration of the suspension point of the upper stroke is relatively reduced, the dynamic load coefficient is reduced, the load is small, and energy is saved. Thirdly, the lever ratio and transmission angle of this machine are more reasonable than those of conventional machines and different cameras, and the stress situation is good, so it saves energy. This machine is suitable for the exploitation of thin oil, heavy oil and high pour point oil in oilfield. When the oil field is exploited, when the natural energy of the oil field is insufficient and the oil well can't self-gush, the pumping unit is used to drive the oil pump with the help of the sucker rod to pump the crude oil to the ground. The machine has reasonable structure and convenient maintenance, installation and use. Easy to popularize, conducive to the transformation of old models, saving about 30%, considerable benefits, transfer and cooperation conditions negotiable. CYJB 12-4.8-37HF beam pumping unit won the third prize of Jilin Science and Technology.