Two-stage planetary reduction pumping unit with built-in winding drum

Abstract

The invention relates to a two-stage planetary reduction pumping unit with a built-in winding drum, which comprises a tower and a pumping rod lifting mechanism, wherein the lifting mechanism is arranged on a lifting platform at the top part of the tower. The lifting mechanism comprises a driving motor and a rotary winding drum of which the outer wall is provided with a slot; the top end of a pumping rod is connected onto a belt; the other end of the belt is fixedly connected into the slot and can be retracted and released in the slot. The lifting mechanism also comprises a head end support, a tail end support and a two-stage planetary reduction mechanism; the rotary winding drum is located between the head end support and the tail end support; the two-stage planetary reduction mechanism is arranged in the rotary winding drum; a first-stage reduction mechanism of the two-stage planetary reduction mechanism is used for receiving the power of the driving motor; a second-stage gear ring of a second-stage reduction mechanism of the two-stage planetary reduction mechanism is used as a power output component and is fixedly arranged on the inner wall of the rotary winding drum through a large flange; the driving motor is a speed regulation reversing motor fixed onto the tail end support; and the motor shaft of the driving motor extends into the rotary winding drum and is fixedly connected with a sun wheel of the first-stage reduction mechanism. The two-stage planetary reduction pumping unit with the built-in winding drum has low cost, a compact structure, low fault rate and energy saving.

Description

technical field [0001] The invention belongs to the technical field of oil exploitation equipment, and in particular relates to a double-stage planetary deceleration pumping unit with a built-in reel. Background technique [0002] At present, there are many kinds of pumping units used in oil fields, and the most commonly used one is the beam pumping unit, commonly known as "kowtow machine". The motor of this kind of pumping unit performs directional operation, acts on the gear reducer through the transmission device, and then cooperates with the four-bar linkage mechanism to drive the beam to swing repeatedly around the pin on the bracket seat, and the sucker rod at the top also acts as The oil pumping work is completed by moving up and down. Such a beam pumping unit has many disadvantages: first, the four-bar linkage mechanism has many motion nodes, so the structure is complex, the motion is not stable, the transmission efficiency is low, and the overall energy consumption...

AI Technical Summary

Problems solved by technology

Such a beam pumping unit has many disadvantages: first, the four-bar linkage mechanism has many motion nodes, so the structure is complex, the motion is not stable, the transmission efficiency is low, and the overall energy consumption of the equipment is large; After the oil in the shallow layer is exhausted, the high-viscosity resources in the deep layer need equipment that can provide long-stroke oil pumping operation. The traditional beam pumping unit does not have the working mode of long-stroke oil pumping.

Such pumping units have some disadvantages: firstly, the existing tower pumping units select permanent magnet motors as the driving force, and such motors are expensive, which increases the cost of the whole equipment; secondly, since the pumping units are generally set up in In the wilderness, the transmission structure will be affected by wind, sand, dust, etc. after a long time, and then a failure will cause a shutdown

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