Pumping unit with auxiliary balancing device

Abstract

A pumping unit with an auxiliary balancing device, comprising the pumping unit, the auxiliary balancing device is connected to the tail of the beam of the pumping unit; the structure of the auxiliary balancing device is that the rear donkey head is fixedly connected with one end of the connecting rod, and the connecting rod The other end of the donkey is connected to the tail of the beam, and the rear head of the donkey is connected to the hydraulic cylinder counterweight through a suspension rope. The invention provides a pumping unit with an auxiliary balance device, which can match the counterweight of the crude oil extracted by the sucker rod during the working process by injecting hydraulic oil into the hydraulic cylinder counterweight, so as to achieve ideal dynamic balance. Because this part of the weight originally needs to be lifted by the engine, this injected counterweight will not increase new energy consumption, but tends to reduce the change in the power output of the motor, thereby reducing the power loss.

Description

technical field [0001] The invention relates to the field of pumping units, in particular to a pumping unit with an auxiliary balancing device. Background technique [0002] At present, during the up and down strokes of the beam pumping unit, the load change of the polished rod will directly lead to the change of the power output of the motor, so that the electric energy is largely wasted in the form of heat loss. Therefore, in the prior art, the Various ways to improve the balance rate of the pumping unit are the key to the energy-saving technology of the pumping unit. [0003] In order to achieve the purpose of energy saving of the pumping unit, most of them are equipped with auxiliary balance, especially the auxiliary dynamic balance device of the traveling beam, on the crank, beam and other mechanisms that are consistent with the pumping movement of the polished rod, to achieve the balance of the pumping unit. Purpose. The existing commonly used auxiliary counterweight...

AI Technical Summary

Problems solved by technology

The problem is that even if the counterweight is added, because the sucker rod of the pumping unit is constantly working, the weight of the oil in the sucker rod is constantly changing, making it difficult to obtain an ideal dynamic balance

[0004] The traditional installation method of the beam auxiliary dynamic balance device of the pumping unit is to install the beam and the balance mechanism through welding and bolt fastening. It is necessary to open holes and weld on the beam, which changes the original beam The structure does not meet the requirements of not changing the structure of the pumping unit as far as possible

And once installed, it is difficult to disassemble, which brings great difficulties to the maintenance of the auxiliary balance device

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