Oil pumping unit

Abstract

The invention provides an oil pumping unit and relates to an oil pumping device, in particular to an oil pumping unit. The oil pumping unit comprises an electromotor, a speed reducer and an oil pumping device, wherein the electromotor is connected with the speed reducer through a V belt; a crank movably connected with the speed reducer is arranged on the speed reducer; the oil pumping device is also provided with a head sheave; the crank is mutually connected with the head sheave through a connecting rod; and the oil pumping device is rotationally connected with the head sheave. The oil pumping unit has the benefits that as the head sheave is connected with the crank, the stresses of the connecting rod and the crank are reduced, so that the net torque peak value on a crank shaft is reduced, and the fluctuation becomes small; the energy loss of an engine is effectively reduced, a power device can be replaced into the small-power electromotor and the small-torque speed reducer, the utilization rate of equipment is greatly improved, and the electricity-saving effect is remarkable; and the oil pumping unit has the advantages of simple structure, convenience in installation and maintenance and high practicality, and can be suitable for industrial production.

Description

technical field [0001] The invention relates to an oil pumping device, in particular to an oil pumping unit. Background technique [0002] At present, the pumping units in service in oil fields are mainly beam pumping units. The overall action of the pumping unit is mainly to rely on the interaction between the beam and the suspension beam to achieve oil pumping. When the suspension point load of the pumping unit is between the upper and lower When the stroke changes greatly, the net torque of the crankshaft of the reducer will appear negative, and the gear of the reducer is vulnerable to "back impact", which increases the working load of the motor and the reducer, and consumes a lot of energy. The service life of the reducer is shortened. Contents of the invention [0003] The invention aims to propose a pumping unit that reduces the damage of the reducer of the motor energy consumption. [0004] A kind of oil pumping unit described in the present invention comprises el...

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Problems solved by technology

[0002] At present, the pumping units in service in oil fields are mainly beam pumping units. The overall action of the pumping unit is mainly to rely on the interaction between the beam and the suspension beam to achieve oil pumping. When the suspension point load of the pumping unit is between the upper and lower When the stroke changes greatly, the net torque of the crankshaft of the reducer will appear negative, and the gear of the reducer is vulnerable to "back impact", which increases the working load of the motor and the reducer, and consumes a lot of energy. Reduced service life of the reducer

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