CN105443083B - Dynamic balance beam pumping unit - Google Patents

Abstract

A kind of dynamic balance beam pumping unit, it is characterized in that setting an intermediary wheel above bearing support, driving rope bypasses two ends after driving wheel, intermediary wheel and directive wheel and is connected respectively on the horse head for hanging ballast box and hangs on the horse head of sucker rod successively, one is flexibly connected above oil pumping unit base and drives platform, motor, decelerator and driving wheel are all disposed within driving platform, and a sandbox is set below driving platform.Weight of the invention by adjusting sandbox, when the oil pumper is normally run, the half of the nearly oil column weight of differential of the driving rope pilled-in selvedge on driving wheel both sides and the power of slack list, then the tractive force subtractive of two horse heads in complete machine is small, at this moment driving rope overcomes a part of frictional force and worked, therefore energy-saving effect is produced, oil pumper abrasion is reduced, extends oil pumper service life.

Description

Force Balance Beam Pumping Unit

technical field

The invention relates to an oil production machine, in particular to a force-balanced energy-saving beam pumping unit.

Background technique

In the case of energy shortage and severe power shortage, energy saving has become a very important issue. The pumping unit is the main production equipment in the oilfield. For low permeability oilfields, the formation of the oil level is relatively slow, and most of the pumping units are idling for a long time, which will waste a lot of electric energy, cause the wear of the pumping unit, and reduce the oil pumping rate. machine life.

At present, there are two kinds of pumping units commonly used at home and abroad: beam pumping unit and balance beam pumping unit. Conventional beam pumping units are relatively reliable in performance, but consume a lot of energy. The balance beam pumping unit runs smoothly and consumes less energy than the beam pumping unit, but it is not ideal. Its driving part is fixed on the base of the pumping unit. When the weight of the counterweight box of the pumping unit is set to half the weight of the sucker rod plus the weight of the oil column, no matter when the sucker rod rises or falls, the traction force on the two symmetrical donkey heads will The difference is half of the weight of the oil column, so the two sides are always unbalanced, the energy consumption is large, and it is far from the national energy-saving requirements, the wear of the pumping unit increases, and the life of the pumping unit is reduced.

Contents of the invention

The technical problem to be solved by the present invention is the problems of high energy consumption, serious wear and low service life of the existing pumping unit, so as to provide a force-balanced beam pumping unit.

In order to solve the above-mentioned technical problems, the present invention provides a force-balanced beam pumping unit, which mainly includes a pumping unit base, a support frame, a beam, a donkey head for hanging a counterweight box, a donkey head for hanging a sucker rod, a counterweight box, and a pumping unit. Oil rod, oil suction pipe, electric control cabinet, motor, reducer, driving wheel, guide wheel, the support is erected on the base of the pumping unit, the top of the support frame is connected to the beam, and the two ends of the beam are connected to the donkey head of the weight box and the hanging beam respectively. The donkey head of the sucker rod, the motor, the reducer and the driving wheel are sequentially connected by transmission. It is characterized in that an intermediate wheel is set on the support frame, and the driving rope bypasses the driving wheel, the intermediate wheel and the guide wheel in turn. On the donkey head of the heavy box and the donkey head hanging the sucker rod, a drive platform is movably connected to the base of the pumping unit. The motor, reducer and driving wheel are all arranged on the drive platform, and a sand box is arranged under the drive platform.

A hinge shaft is installed through two bearing seats below the driving platform, and the two ends of the hinge shaft are fixed on the bearing bush holder on the base of the pumping unit.

The driving platform is connected to the base of the pumping unit and away from the end of the driving wheel, and the sand box is arranged under the driving platform at one end of the driving wheel.

The difference of the driving force of the driving rope on both sides of the driving wheel is 1/2 oil column weight.

In the present invention, by adjusting the weight of the sand box, when the pumping unit is in normal operation, the driving platform rotates around the hinge shaft, and there is a difference in the driving force of the driving rope on both sides of the driving wheel, and the difference in traction force of the two donkey heads on the whole machine is corresponding At this time, the driving rope overcomes a part of the friction and works, thus producing energy saving effect, reducing the wear of the pumping unit and prolonging the service life of the pumping unit. When the driving force difference is 1/2 the weight of the oil column, the traction force of the two donkey heads on the whole machine is equal to achieve balance, and the energy saving effect is the best.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural diagram of the drive platform and the base of the pumping unit.

In the figure: pumping unit base 1, supporting frame 2, sand box 3, driving platform 4, bearing bush holder 5, hinge shaft 6, bearing housing 7, motor 8, driving wheel 9, reducer 10, counterweight box 11, intermediary Axle 12, intermediate wheel 13, driving rope 14, traction rope for hanging counterweight box 15, donkey head for hanging counterweight box 16, center shaft bearing bush fixer 17, center shaft 18, center shaft bearing seat 19, traveling beam 20, hanging sucker rod Donkey head 21, traction rope for hanging sucker rod 22, rope hanger 23, sucker rod 24, guide wheel 25, guide wheel shaft 26, guide wheel bearing seat 27, guide wheel bracket 28, electric control cabinet 29, oil suction pipe 30, Reducer output shaft 31.

detailed description

With reference to Fig. 1, Fig. 2, the specific embodiment of the present invention is to install support frame 2 on the pumping unit base 1, the bearing pad holder 17 on the top of the support frame fixes the central shaft 18, and the central shaft passes through the central shaft bearing seat 19 and the beam 20 is connected, and the two ends of the beam 20 are respectively connected to the donkey head 16 for hanging the counterweight box and the donkey head 21 for hanging the sucker rod. The rope device 23 is connected to the sucker rod 24, the counterweight box traction rope 15 is hung on the donkey head 16 of the counterweight box, the other end of the counterweight box traction rope 15 is hung with the counterweight box 11, and the shaft output shaft of the motor 8 on the drive platform 4 is connected to the The input shaft of the reducer 10 is connected, the output shaft 31 of the reducer is connected with the driving wheel 9, and the driving rope 14 is wound around the driving wheel 9, and the other end of the driving rope passes through the intermediate wheel 13 and the guide wheel 25 and finally connects to the hanging sucker rod On the donkey head 21, the hinge shaft 6 is installed under the end of the drive platform 4 away from the drive wheel through two bearing blocks 7, and the two ends of the hinge shaft 6 are respectively fixed on the pumping unit base 1 with the bearing bush holder 5, and the drive platform 4 There is also a sand box 3 at one end of the driving wheel below, so as to adjust the weight of the driving platform, so that when the pumping unit is in normal operation, the driving platform rotates around the hinge shaft, and the driving force difference of the driving rope on both sides of the driving wheel is 1/2 When the weight of the oil column is high, the traction force of the two donkey heads on the whole machine is equal, reaching a balance, and the energy-saving effect is the best. The motor rotates forward and reverse under the control of the electric control cabinet to realize oil pumping work.

Claims (4)

1. A force-balanced beam pumping unit, mainly comprising a pumping unit base, a support frame, a beam, a donkey head for hanging a counterweight box, a donkey head for hanging a sucker rod, a counterweight box, a sucker rod, a sucker pipe, an electric Control cabinet, motor, reducer, driving wheel, guide wheel, the support is installed on the base of the pumping unit, the top of the support frame is connected to the beam, and the two ends of the beam are respectively connected to the donkey head for hanging the counterweight box and the donkey head for hanging the sucker rod, and the motor It is sequentially connected with the reducer and the driving wheel, and the characteristic is that an intermediate wheel is set on the supporting frame, and the driving rope bypasses the driving wheel, the intermediate wheel and the guide wheel in turn, and the two ends are respectively connected to the donkey head hanging on the counterweight box and the hanging wheel. On the donkey head of the sucker rod, a drive platform is movably connected to the base of the pumping unit. The motor, reducer and drive wheel are all arranged on the drive platform, and a sand box is arranged below the drive platform. 2. The force balance beam pumping unit according to claim 1, characterized in that: a hinge shaft is installed below the drive platform through two bearing seats, and the two ends of the hinge shaft are fixed on the bearing bushes on the pumping unit base. device. 3. The force-balanced beam pumping unit according to claim 1, wherein the driving platform is connected to the base of the pumping unit and away from the end of the driving wheel, and the sand box is arranged under the driving platform at one end of the driving wheel. 4. The force-balanced beam pumping unit according to claim 1, wherein the driving force difference between the driving ropes on both sides of the driving wheel is 1/2 the weight of the oil column.