CN2913676Y

CN2913676Y - Automatic torque-change pumping unit

Info

Publication number: CN2913676Y
Application number: CN 200620200485
Authority: CN
Inventors: 刘牧洲; 张金力; 王树行
Original assignee: MACHINERY MANUFACTURING GENERAL Co XINJIANG PETROLEUM ADMINISTRATIVE BUREAU
Current assignee: MACHINERY MANUFACTURING GENERAL Co XINJIANG PETROLEUM ADMINISTRATIVE BUREAU
Priority date: 2006-06-06
Filing date: 2006-06-06
Publication date: 2007-06-20
Anticipated expiration: 2016-06-06

Abstract

An automatic variable torque pumping unit comprises a motor, a speed-reducing device, a crank, a connection rod, a support, a counterweight device, a travel beam, a horsehead, a flexible piece, a polished rod, and a base seat. The motor, speed-reducing device and support are fixedly arranged on the base seat. The middle part of the travel beam is in hinge joint with the top of the support. The horsehead is fixed in front of the travel beam. A variable torque balancing beam is also provided in a way that the middle part thereof is in hinge joint with the rear end of the travel beam and the rear end thereof is arranged with the counterweight device. The upper end of the flexible piece is fixed arranged in front of the variable torque balancing beam, the lower end thereof is fixed arranged on the polished rod, and the middle part thereof is supported movably by the horsehead. The utility model has reasonable and compact structure and good flexibility, and is characterized in that the balancing force arm is increased or reduced along with the load increase or reduction of the polished rod, so that the balancing torque is extremely approximate to the load torque, providing a good balancing effect; the flexible piece slides on the horsehead to baffle the load variation, so that the energy is saved, the start-up torque and current are reduced, the service life of components is prolonged while the force is reduced.

Description

Automatic torque-changing pumping unit

One, technical field

The utility model relates to the ground oil production equipment of recover petroleum, is a kind of automatic torque-changing pumping unit.

Two, background technique

The beam pumping unit of field use is a quadratic crank mechanism at present, generally comprise motor, retarder, crank, connecting rod, support, balance weight device, walking beam, horse head, flexible member, polished rod and base, motor, retarder and support are fixedly mounted on the base, the walking beam middle part is hinged on the top of support, and the walking beam front end is horse head fixedly.Motor drives retarder by v belt, after the deceleration, by quadratic crank mechanism rotatablely moving of reducer output shaft is become the to-and-fro motion of walking beam horse head, drives polished rod and sucker rod by horse head again and makes up and down reciprocatingly straight line motion, drives the oil well pump oil pumping.In order to reduce the stressed of pumping unit driver part and to reduce retarder moment of torsion and power of motor, need on crank or walking beam, increase certain counterweight, to cut down the effect of polished rod load to transmission part, play balanced action preferably, realize energy saving, prolong the pumping unit purpose in working life.Previous beam pumping unit adopts the mode of crank balance, and energy-saving effect is poor.The energy-saving beam pumping unit that recently develops rapidly at home mostly adopts the variable torque balance principle, makes trimming moment approach load moment as far as possible, belongs to the beam balance mode, has obtained energy-saving effect preferably.But present variable torque balance is realized by the change balance arm of force, is mechanical, and the variation of the balance arm of force is determined by the kinetic characteristic of pumping unit.The change curve of the balance arm of force is a curve that fix, well-regulated in the pumping unit operation process, and it can not change automatically along with the variation of polished rod load, so the good balancing load moment of the trimming moment of pumping unit.

Three, summary of the invention

The utility model provides a kind of automatic torque-changing pumping unit, overcome the deficiency of above-mentioned prior art, solve existing balance of well pumping unit moment and can not adapt to the problem that polished rod load changes automatically, the size that has realized the balance arm of force of pumping unit changes along with the variation of polished rod load, make the good balancing load moment of trimming moment, thus the effect of playing saving power, reducing cost, increase the service life.

The technical solution of the utility model realizes by following measure: a kind of automatic torque-changing pumping unit, it comprises motor, retarder, crank, connecting rod, support, balance weight device, walking beam, horse head, flexible member, polished rod and base, motor, retarder and support are fixedly mounted on the base, the walking beam middle part is hinged on the top of support, the walking beam front end is fixed with horse head, the middle part of variable torque balance beam is hinged on the rear end of walking beam, the rear end of variable torque balance beam is equipped with balance weight device, the upper end of flexible member is fixedly mounted on the front end of variable torque balance beam, the lower end of flexible member is fixedly mounted on the polished rod, and the middle part of flexible member rides on the horse head and can slide on horse head.

Be further optimization and/or improvements below to above-mentioned technical solutions of the utility model:

Above-mentioned balance weight device can adopt fixed.

Above-mentioned balance weight device can adopt fixed counterweight gauge block or fixed counterweight post.

Above-mentioned balance weight device can adopt movable.

Above-mentioned balance weight device can comprise balance weight body and equilibrium block, is useful on the cavity of placing equilibrium block on balance weight body.

Above-mentioned flexible member can adopt flexible strand or flexible band or flexible chain.

The middle part of above-mentioned variable torque balance beam can be hinged on the rear end of walking beam by hinged-support.

The utility model reasonable and compact in structure, has certain software feature promptly: along with the increase of polished rod load or reduce to make the balance arm of force to increase or reduce, make trimming moment greatly near load moment, reach best counterbalance effect, by the variation of the slip cushion load of flexible member on horse head, thereby play saving power, reduce starting torque and starting current, reduce the stressed and effect that prolongs its working life of parts.

Four, description of drawings

Accompanying drawing 1 is the main TV structure schematic representation of the utility model most preferred embodiment,

Coding in the accompanying drawing is respectively: 1 is motor, and 2 is v belt, and 3 is retarder, 4 is crank, and 5 is crank pin, and 6 is connecting rod, 7 is support, and 8 is the crossbeam bearing support, and 9 is balance weight device, 10 is the variable torque balance beam, and 11 is hinged-support, and 12 is the central axis bearing, 13 is walking beam, and 14 is horse head, and 15 is flexible member, 16 is polished rod, and 17 is base.

Five, embodiment

The utility model is not subjected to following embodiment's restriction, can determine concrete mode of execution according to the technical solution of the utility model and actual conditions.

Below in conjunction with embodiment and accompanying drawing the utility model is further described:

As shown in Figure 1, this automatic torque-changing pumping unit comprises motor 1, retarder 3, crank 4, connecting rod 6, support 7, balance weight device 9, walking beam 13, horse head 14, flexible member 15, polished rod 16 and base 17, motor 1, retarder 3 and support 7 are fixedly mounted on the base 17, walking beam 13 middle parts are hinged on the top of support 7, walking beam 13 front ends are fixed with horse head 14, the middle part of variable torque balance beam 10 is hinged on the rear end of walking beam 13, the rear end of variable torque balance beam 10 is equipped with balance weight device 9, the upper end of flexible member 15 is fixedly mounted on the front end of variable torque balance beam 10, the lower end of flexible member 15 is fixedly mounted on the polished rod 16, and the middle part of flexible member 15 rides on the horse head 14 and can slide on horse head 14.

Can according to actual needs last the utility model be made further optimization and/or improvements:

As shown in Figure 1, flexible member 15 adopts flexible strand or flexible band or flexible chain; Balance weight device 9 can adopt fixed, and it can be fixed counterweight gauge block or fixed counterweight post; In order to increase adaptability, balance weight device 9 preferably adopts movable, and this balance weight device 9 can comprise balance weight body and equilibrium block, is useful on the cavity of placing equilibrium block on balance weight body; The middle part of variable torque balance beam 10 is hinged on the rear end of walking beam 13 by hinged-support 11.

Above technical characteristics has constituted most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristics according to actual needs, satisfies the demand of different situations.

The working procedure of the utility model most preferred embodiment is as follows: as shown in Figure 1, motor 1 rotates by the crank 4 that v belt 2 drives on the retarder 3, and by crank pin 5, connecting rod 6 and crossbeam bearing support 8 traction walking beams 13 and horse head 14 swings, drive polished rod 16 and sucker rod work straight line motion up and down reciprocatingly by horse head 14 again, drive the oil well pump oil pumping.

In the utility model automatic torque-changing pumping unit operation process, when the load on the polished rod 16 increases, the power that flexible member 15 is added on the variable torque balance beam 10 will increase, will break variable torque balance beam 10 original state of equilibrium like this, make variable torque balance beam 10 angle that turns clockwise, balance weight device 9 becomes big to the distance at central axis bearing 12 centers, it is big that thereby the balance arm of force becomes, make pumping unit reach a new state of equilibrium, simultaneously, because variable torque balance beam 10 angle that turns clockwise, flexible member 15 along the cambered surface of horse head 14 to distance of lower slider, with pushing the speed and amplitude of buffering polished rod 16 load.

When the load on the polished rod 16 reduces, the power that flexible member 15 is added on the variable torque balance beam 10 will reduce, so also can break variable torque balance beam 10 original state of equilibrium, make variable torque balance beam 10 be rotated counterclockwise an angle, balance weight device 9 diminishes to the distance at central axis bearing 12 centers, thereby the balance arm of force diminishes, make pumping unit reach a new state of equilibrium, simultaneously, because variable torque balance beam 10 is rotated counterclockwise an angle, flexible member 15 is in the cambered surface of horse head 14 distance of upwards sliding, and reduces speed and amplitude with the buffering polished rod load.

In sum, when the utility model automatic torque-changing pumping unit turns round, the increase of polished rod 16 load or reduce just can make rich hinged-supports 11 rotations of variable torque balance beam 10, change the position of balance weight device 9, the balance arm of force is increased or reduce, reach and change trimming moment, the effect of balance polished rod 16 load to greatest extent.Simultaneously, because the rotation of variable torque balance beam 10, make the utility model automatic torque-changing pumping unit have certain software feature, the rapid change of pumping unit load when can efficient buffer the utility model automatic torque-changing pumping unit starting and in the operation process, reducing the pumping unit inrush current and to reduce the stressed of parts, thereby realize energy-conservation and effect that increase the service life.

Claims

1, a kind of automatic torque-changing pumping unit, comprise motor, retarder, crank, connecting rod, support, balance weight device, walking beam, horse head, flexible member, polished rod and base, motor, retarder and support are fixedly mounted on the base, the walking beam middle part is hinged on the top of support, the walking beam front end is fixed with horse head, it is characterized in that the middle part of variable torque balance beam is hinged on the rear end of walking beam, the rear end of variable torque balance beam is equipped with balance weight device, the upper end of flexible member is fixedly mounted on the front end of variable torque balance beam, the lower end of flexible member is fixedly mounted on the polished rod, and the middle part of flexible member rides on the horse head and can slide on horse head.

2, automatic torque-changing pumping unit according to claim 1, it is fixed to it is characterized in that balance weight device adopts.

3, automatic torque-changing pumping unit according to claim 2 is characterized in that balance weight device adopts fixed counterweight gauge block or fixed counterweight post.

4, automatic torque-changing pumping unit according to claim 1, it is movable to it is characterized in that balance weight device adopts.

5, automatic torque-changing pumping unit according to claim 4 is characterized in that balance weight device comprises balance weight body and equilibrium block, is useful on the cavity of placing equilibrium block on balance weight body.

6,, it is characterized in that flexible member adopts flexible strand or flexible band or flexible chain according to claim 1 or 2 or 3 or 4 or 5 described automatic torque-changing pumping units.

7,, it is characterized in that the middle part of variable torque balance beam is hinged on the rear end of walking beam by hinged-support according to claim 1 or 2 or 3 or 4 or 5 described automatic torque-changing pumping units.

8, automatic torque-changing pumping unit according to claim 6 is characterized in that the middle part of variable torque balance beam is hinged on the rear end of walking beam by hinged-support.