CN201354627Y

CN201354627Y - Beam balance aiding walking-beam pumping unit

Info

Publication number: CN201354627Y
Application number: CNU2009200928700U
Authority: CN
Inventors: 李洪; 刘瑞华; 齐绍新; 陈军; 王建; 王婧妍
Original assignee: JILIN HENGJI PETROLEUM SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: JILIN HENGJI PETROLEUM SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2009-01-15
Filing date: 2009-01-15
Publication date: 2009-12-02
Anticipated expiration: 2019-01-15

Abstract

Applied to oil pumping operation of oil fields, a beam balance aiding walking-beam pumping unit overcomes the defects of resource waste and poor stability in operation caused by a need of increasing power configuration in the existing walking-beam pumping unit. The beam balance aiding walking-beam pumping unit comprises a stander, a walking beam, a mule head at a head end, a crank that corresponds to the tail end of the walking beam and is positioned on the ground, a crank seat, an energy storage counter weight on the crank, and a connecting bar, a speed reducer and an electric motor between the crank and the walking beam. The improvement is that an upright post or a bracket is added above a walking beam rotating shaft on the stander, a beam counter weight that can move longitudinally along the walking beam is installed at the tail end of the walking beam and the connecting bar is articulated between the top end of the upright post or the bracket and the beam counter weight. The beam balance aiding walking-beam pumping unit has the beneficial effects that an added beam movable counter weight that synchronizes with the swing period of the walking beam brings down the required power peak value of the electric motor in the initial stage of oil pumping process, conditions is provided for decreasing the power of a driving motor of a pumping unit. Proved by calculation and experiments, the rated power of a matched electric motor of a pumping unit with the same specification can be lowered by 10 percent. Simultaneously, the mechanical vibration can also be abated.

Description

Help the weighing apparatus beam pumping unit on the beam

Technical field

The utility model belongs to oil exploitation machinery, is specifically related to a kind of beam pumping unit.

Background technology

At present from underground extraction petroleum operations, use traditional beam pumping unit more.Though also occurred the new pumping unit of various ways in recent years, on forefront of the production, do not used widely.Beam pumping unit as the oil field oil pumping main force develops into so far, still has the technical problem that should overcome, and the utility model proposes at the problem in its power coupling.Walking beam drives accumulation of energy counterweight on the crank in the process with the crank rotation, firmly the changing because of the difference of rotatable phase walking beam of generation.In the work phase place, to the active force of walking beam by little gradually gradually little greatly again, rotate to the top (rise and take out the position) in the accumulation of energy counterweight, it is the position that walking beam needs maximum power, and this moment, counterweight was zero to the active force of walking beam, the lifting of well bar is directly dragged by reductor fully, and the immediate current of motor increases to 3 times of rated current.Select powerful motor for use so have to, formed the power configuration of " low load with strong power ", cause installed capacity to increase, caused the wasting of resources, and equipment operation kind of poor stability, service life of equipment influenced.

Summary of the invention

The purpose of this utility model provides and helps the weighing apparatus beam pumping unit on a kind of beam, is used for oil field oil pumping operation, overcomes that existing beam pumping unit need strengthen power configuration and the wasting of resources that causes and the shortcoming of poor stability in service.

Oil pumper of the present utility model comprises frame, be installed in the frame upper end walking beam, be installed in the head end of the corresponding well head of walking beam horse head, be installed in the accumulation of energy counterweight on the ground crank of corresponding beam travelling tail end, crank base, the crank, the reductor of the connecting rod between crank and the walking beam, connecting crank axle, the motor of drive speed reducer.Column or support are set up in the improvement of being done above walking beam turning cylinder on the frame, counterweight on the beam that can vertically move along walking beam is installed in beam travelling tail end one side, in articulated linkage between the counterweight on the top of column or support and the beam.

Good effect of the present utility model is: the distance of counterweight relative walking beam turning cylinder on walking beam changes synchronously with the corner of walking beam on the beam, when under the oil pumping end of walking beam is rocked to, turning back, counterweight is positioned at the distal-most end of walking beam afterbody on the beam, formation becomes the auxiliary power in the oil pumping stroke to the maximum rotation moment of walking beam.Move to when turning back at the walking beam head end, counterweight moves to apart from walking beam turning cylinder closest approach on the beam, and the moment that walking beam is produced becomes minimum, the load of drive motors when rising to reduce the accumulation of energy counterweight.Set up with walking beam hunting period synchronous beam on mobile counterweight, reduced oil pumping required motor power peak value of stroke starting stage, for the power that reduces the oil pumper drive motors provides condition, as calculated and the experiment, change over structure of the present utility model at existing beam pumping unit, can reduce 10% of former coupling motor rated power.The mechanical oscillation of complete machine have also been reduced simultaneously.

Description of drawings

Accompanying drawing is the utility model overall schematic.

The specific embodiment

Consult accompanying drawing, by prior art frame 1 is set, be installed in frame upper end walking beam 2, be installed in the head end of the corresponding well head of walking beam horse head 3, be installed in the accumulation of energy counterweight 6 on the ground crank 4 of corresponding beam travelling tail end, crank base 5, the crank, the motor 9 of the connecting rod 7 between crank and the walking beam, the reducing gear 8 of connecting crank axle, drive speed reducer.Above walking beam 2 turning cylinders on the frame 1, set up support 10, support 10 upper end articulated linkage 11, counterweight 12 on the other end mounting rail of connecting rod 11, the hinged carrier that roller is arranged 13 that moves of being used on walking beam of counterweight one end on connecting rod 11 mounting rails.In the foregoing description, counterweight also can be the cylindrical roller that is directly carried by walking beam 2 on the beam, and roller is installed in the free end of connecting rod 11 by bearing.

Claims

1, helps the weighing apparatus beam pumping unit on the beam, comprise frame, be installed in frame upper end walking beam, be installed in the head end of the corresponding well head of walking beam horse head, be installed in the accumulation of energy counterweight on the ground crank of corresponding beam travelling tail end, crank base, the crank, the reductor of the connecting rod between crank and the walking beam, connecting crank axle, the motor of drive speed reducer, it is characterized in that: above frame walking beam turning cylinder, set up column or support, counterweight on the beam that can vertically move along walking beam is installed, in articulated linkage between the counterweight on the top of column or support and the beam in beam travelling tail end one side.