CN106368936A - Control method of beam-pumping unit walking beam auxiliary counterweight - Google Patents
Control method of beam-pumping unit walking beam auxiliary counterweight Download PDFInfo
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- CN106368936A CN106368936A CN201610890926.1A CN201610890926A CN106368936A CN 106368936 A CN106368936 A CN 106368936A CN 201610890926 A CN201610890926 A CN 201610890926A CN 106368936 A CN106368936 A CN 106368936A
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- walking beam
- auxiliary balance
- preset distance
- balance
- oil pumper
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- 238000005086 pumping Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000001133 acceleration Effects 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 9
- 210000000245 forearm Anatomy 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 230000001143 conditioned effect Effects 0.000 claims description 3
- 238000010516 chain-walking reaction Methods 0.000 claims 1
- 208000006011 Stroke Diseases 0.000 abstract 2
- 230000008859 change Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 240000006829 Ficus sundaica Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001095 motoneuron effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/14—Counterbalancing
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a control method of an auxiliary balance weight of a beam of an oil pumping unit, which comprises the following steps: judging the balance degree of the oil pumping unit, wherein the balance degree at least comprises a balance state, an underbalance state and an overbalance state; when the balance degree is in a balance state, the auxiliary balance weight of the walking beam is controlled to move to the tail end of the walking beam to a position which is a first preset distance away from the fulcrum of the walking beam when the oil pumping unit is in an up-stroke stage; when the net torque curve begins to descend and then reaches a first set angle, the walking beam is controlled to assist balance to move to the front end of the walking beam to a position which is a second preset distance away from the fulcrum of the walking beam; controlling the walking beam auxiliary balance weight to move to a third preset distance away from the fulcrum of the walking beam in the direction of the fulcrum of the walking beam and enabling the walking beam auxiliary balance weight to be located on the front arm of the walking beam; and controlling the auxiliary balance weight of the walking beam to return to the branch point of the walking beam before the down stroke of the pumping unit is finished. The invention can dynamically control the pumping unit, and the beam-assisted counterweight continuously changes position along with the rotation of the crank to realize the dynamic balance of the pumping unit.
Description
Technical field
The present invention relates to oil-gas mining technical field, particularly to a kind of controlling party of walking beam on pumping units auxiliary balance weight
Method.
Background technology
Beam pumping unit is change due to up-down stroke load, there is very big disequilibrium, in order that driving trip
The motor of girder-like oil pump uniform load in up-down stroke, is generally balanced to the load of oil pumper, employing
Method is usually to install gravitational equilibrium block on crank or walking beam additional.Even if so, due to stratum fluid supply capacity or pumping unit work
Make the change of state, can frequently result in oil pumper and deviate poised state, this is carried out to the balance weight of oil pumper after being accomplished by shutting down
Position adjustment.For the operability improving balancing that solves the above problems, then occur in that again and walking beam auxiliary is increased on walking beam
Balance weight, and using the different modes such as hand-hydraulic system, motor to walking beam auxiliary balance weight position shut down or
Do not shut down regulation, so-called shutdown adjusts the poised state being to calculate an oil pumper every certain hour, if necessary to just
Adjust the position of walking beam auxiliary balance weight, just survey next time after certain hour for the fixed position is adjusted afterwards.
In certain certain time that the above-mentioned oil pumper with walking beam auxiliary balance weight works, its position is to maintain constant
's.Fig. 1 a, Fig. 1 b are the signal of the oil pumper load-torque, counter balance torque and net torque curve on motor shaft in prior art
Figure, as shown in Fig. 1 a, 1b, oil pumper load-torque curve is that caput Equi Asini polished rod load acts on reduction box song by quadric chain
With the change curve of crank angle, counter balance torque curve is that balance weight acts on reduction box crank axle to moment of torsion on arbor
Moment of torsion with the change curve of crank angle, net torque curve be oil pumper load-torque curve with counter balance torque curve combining after
Torque curve, net moment of torsion is to drive the motor moment of torsion that overcomes of needs of oil pumper.Oil pumper when walking beam auxiliary balance weight
Balance general when, drive oil pumper load-torque on the motor shaft that oil pumper runs, counter balance torque and net torque curve such as
Shown in Fig. 1 a, 1b.When oil pumper deviates poised state, the net torque curve on motor shaft will go out in the peak value of up-down stroke
Existing bigger difference, during underbalance, upstroke peak torque is more than down stroke peak torque, and during overbalance, upstroke peak torque is little
In down stroke peak torque.Now need to be adjusted making it be returned to poised state, for example, when oil pumper underbalance, will
The modes such as walking beam auxiliary balance huge profit motor, hand-hydraulic system move a certain distance to beam travelling tail end；Work as oil pumper
During overbalance, then walking beam auxiliary balance weight is moved a certain distance to walking beam front end (caput Equi Asini direction).Adjusting rear oil pumper
During work, walking beam auxiliary balance recuperation position is fixed.Detected by the balance to the oil pumper after adjusting, send out
Existing above-mentioned method of adjustment serves certain help to the balance improving oil pumper.
But said method is equivalent to a part of balance weight has been put on walking beam, counter balance torque curve remains approximate
Sine curve, therefore it is difficult to eliminate situation negative torque on net torque curve not in the case of net moment of torsion peak value balance
The net torque curve shape of oil pumper can be changed, still occur that one section of moment of torsion is negative situation on this curve, as Fig. 1 a, 1b institute
Show, illustrate that the work of motor after balancing still occurs a bit of situation being in generator operation state, this
Motor can be affected although this impact may be less.Therefore, the poised state how adjusting oil pumper is still deposited
In the necessity adjusting improvement further and possibility.
Content of the invention
In order to overcome the drawbacks described above of prior art, embodiment of the present invention technical problem to be solved there is provided one kind
The control method of walking beam on pumping units auxiliary balance weight, it can carry out dynamic control to walking beam on pumping units auxiliary balance again, with song
The walking beam auxiliary balance weight that rotates of handle constantly changes the dynamic equilibrium that oil pumper is realized in position.
The concrete technical scheme of the embodiment of the present invention is:
A kind of control method of walking beam on pumping units auxiliary balance weight, comprises the following steps:
The balanced degree of oil pumper is judged, described balanced degree at least include poised state, under-balanced state and
Overbalance state；
When balanced degree is for poised state, it is in upstroke stage control walking beam auxiliary balance weight to walking beam in oil pumper
It is at the first preset distance that tail end moves to away from walking beam fulcrum；When after net torque curve beginning to decline to the first set angle,
Control walking beam auxiliary balance to walking beam nose motion at away from walking beam fulcrum for the second preset distance；Control walking beam auxiliary balance weight
Move to away from walking beam fulcrum to walking beam fulcrum direction is at the 3rd preset distance and to make walking beam auxiliary balance be in walking beam forearm again
On；Before oil pumper down stroke terminates, control walking beam auxiliary balance to return to and return at walking beam fulcrum；
When balanced degree is for under-balanced state, it is in upstroke stage control walking beam auxiliary balance weight to trip in oil pumper
It is at the 4th preset distance that tail beam moves to away from walking beam fulcrum, and the 4th preset distance is more than the first preset distance；Work as net moment of torsion
Curve begin to decline after to the second set angle when, the second set angle be more than the first set angle, control walking beam auxiliary balance
To walking beam nose motion to being at the 5th preset distance away from walking beam fulcrum, the 5th preset distance is less than the second preset distance；Control
It is at the 6th preset distance that walking beam auxiliary balance weight moves to away from walking beam fulcrum to walking beam fulcrum direction；When oil pumper down stroke knot
Shu Qian, controls walking beam auxiliary balance to return to and returns at walking beam fulcrum；
When balanced degree is for overbalance state, it is in upstroke stage control walking beam auxiliary balance weight to trip in oil pumper
It is at the 7th preset distance that tail beam moves to away from walking beam fulcrum；To the 3rd set angle after net torque curve begins to decline
When, the 3rd set angle is less than the first set angle, and control walking beam auxiliary balance to walking beam nose motion away from walking beam fulcrum is extremely
At 8th preset distance, the 8th preset distance is more than the second preset distance；Control walking beam auxiliary balance weight to walking beam fulcrum direction
Moving to away from walking beam fulcrum is at the 9th preset distance, and the 9th preset distance is more than the 3rd preset distance；When oil pumper down stroke
Before end, control walking beam auxiliary balance to return to and return at walking beam fulcrum.
It is preferably carried out in mode in one kind, poised state is the peak value in up-down stroke for the net torque curve of oil pumper
Meet pre-conditioned.
Be preferably carried out in mode in one kind, under-balanced state be oil pumper net torque curve in up-down stroke, on
Stroke net moment of torsion is more than down stroke net moment of torsion.
Be preferably carried out in mode in one kind, overbalance state be oil pumper net torque curve in up-down stroke, on
Stroke net moment of torsion is less than down stroke net moment of torsion.
It is preferably carried out in mode in one kind, when walking beam auxiliary balance is located on walking beam forearm again, the 6th preset distance
Less than the 3rd preset distance.
It is preferably carried out in mode in one kind, when underbalance is serious, walking beam auxiliary balance is located on walking beam postbrachium again, the
Six preset distances are less than or equal to or are more than the 3rd preset distance.
It is preferably carried out in mode in one kind, when walking beam auxiliary balance is located on walking beam postbrachium again, the described 7th makes a reservation for
Distance is less than described first preset distance.
It is preferably carried out in mode in one kind, when overbalance is serious, walking beam auxiliary balance is located on walking beam forearm again, the
Seven preset distances are less than or equal to or are more than the first preset distance.
It is preferably carried out in mode in one kind, determine oil pumping by measuring pumping-unit motor upper and lower stroke acting size
The balanced degree of machine.
It is preferably carried out in mode in one kind, when the acting of motor upstroke is more than down stroke acting, oil pumper is to owe flat
Weighing apparatus state, when the acting of motor upstroke is less than down stroke acting, oil pumper is overbalance state.
It is preferably carried out in mode in one kind, the electric current by the upper and lower stroke of current sensor measurement pumping-unit motor is big
Little determining the balanced degree of oil pumper.
It is preferably carried out in mode in one kind, when the current of electric of upstroke is more than the current of electric of down stroke, oil pumping
Machine is under-balanced state, and when the current of electric of upstroke is less than the current of electric of down stroke, oil pumper is overbalance state.
It is preferably carried out in mode in one kind, described oil pumper includes: walking beam；It is arranged on the walking beam auxiliary on described walking beam
Balance weight adjusting means, walking beam auxiliary balance readjustment regulating device includes: balance frame, and balance frame is provided with driven sprocket；
It is arranged on the walking beam auxiliary balance weight on balance frame；It is arranged on the driving means on balance frame, driving means are included actively
Sprocket wheel, is provided with chain, chain is connected with walking beam auxiliary balance heavy phase between drive sprocket and driven sprocket, so that driving means
When driving drive sprocket and driven sprocket to rotate, the chain between drive sprocket and driven sprocket can drive walking beam auxiliary balance weight
Mobile；It is arranged on the acceleration transducer on described walking beam, it is used for detecting the acceleration being in upstroke or down stroke of walking beam
Degree sensor；For driving the motor of described walking beam motion；For measuring the current sensor of described motor operating current；Control
Device, it assists to beam pumping unit walking beam according to the data that described acceleration transducer and described current sensor monitor
Driving means in balance weight adjusting means are controlled such that walking beam auxiliary balance moves again.
Technical scheme has a following notable beneficial effect:
In the embodiment of the present invention, the control method of walking beam on pumping units auxiliary balance weight is capable of to walking beam auxiliary balance weight
Carry out the change of front and back position with swinging up and down of walking beam around walking beam fulcrum, the work improving counterbalance effect can not only be played
With reducing motor net moment of torsion moreover it is possible to further function as, and then reduce the effect of power of motor, be also avoided that Motor torque simultaneously
The situation of negative value in (or power), improves the running status of motor.When oil pumper load deviates poised state, can pass through
Change walking beam auxiliary balance move forward and backward again direction, displacement to improve counterbalance effect, realize the dynamic equilibrium of oil pumper.
Brief description
Accompanying drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention by any way
Enclose.In addition, the shape of each part of in figure and proportional sizes etc. are only schematically, it is used to help the understanding of the present invention, and
It is not shape and the proportional sizes specifically limiting each part of the present invention.Those skilled in the art under the teachings of the present invention, can
To select various possible shapes and proportional sizes to implement the present invention as the case may be.
Fig. 1 a and Fig. 1 b is the oil pumper load-torque on motor shaft in prior art, counter balance torque and net torque curve
Schematic diagram.
Fig. 2 is the structural representation of beam pumping unit walking beam auxiliary balance readjustment regulating device in the embodiment of the present invention.
Fig. 3 is the flow chart of the control method of walking beam on pumping units auxiliary balance weight in the embodiment of the present invention.
Fig. 4 a and 4b is respectively walking beam on pumping units auxiliary balance in the embodiment of the present invention and focuses on taking out after poised state adjusts
The torque curve figure of oil machine.
Fig. 5 is the torsion that in the embodiment of the present invention, walking beam on pumping units auxiliary balance focuses on the oil pumper after under-balanced state adjustment
Square curve chart.
Fig. 6 is the torsion that in the embodiment of the present invention, walking beam on pumping units auxiliary balance focuses on the oil pumper after the adjustment of overbalance state
Square curve chart.
The reference of the figures above:
1st, driving means；2nd, decelerator；3rd, drive sprocket；4th, chain；5th, block piece；6th, guide rail；7th, walking beam auxiliary balance
Weight；8th, balance frame；9th, driven sprocket；10th, load-torque curve；20th, counter balance torque curve；21st, the balance under underbalance is turned round
Square；22nd, the counter balance torque under overbalance；30th, net torque curve；31st, the net moment of torsion under underbalance；32nd, the net torsion under overbalance
Square；40th, auxiliary balance torque curve；50th, the net torque curve of oil pumper after dynamic equilibrium adjusts.
Specific embodiment
In conjunction with the description of accompanying drawing and the specific embodiment of the invention, can clearly understand the details of the present invention.But
It is, the specific embodiment of invention described herein to be only used for explaining the purpose of the present invention, and can not understand by any way
One-tenth is limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrarily possible change based on the present invention
Shape, these are regarded as belonging to the scope of the present invention.
Fig. 2 is the structural representation of beam pumping unit walking beam auxiliary balance readjustment regulating device in the embodiment of the present invention, such as
Shown in Fig. 2, in the embodiment of the present invention, propose a kind of beam pumping unit walking beam auxiliary balance readjustment regulating device, beam type is taken out
Oil machine walking beam auxiliary balance readjustment regulating device includes: balance frame 8, and balance frame 8 is provided with driven sprocket 9；It is arranged on flat
Walking beam auxiliary balance in weighing apparatus frame 8 weighs 7；It is arranged on the driving means 1 on balance frame 8, driving means 1 include drive sprocket
3, it is provided with chain 4 between drive sprocket 3 and driven sprocket 9, chain 4 weighs 7 with walking beam auxiliary balance and is connected, so that driving dress
When putting 1 drive drive sprocket 3 and driven sprocket 9 rotation, the chain 4 between drive sprocket 3 and driven sprocket 9 can drive walking beam auxiliary
Help balance weight 7 mobile.
Beam pumping unit walking beam auxiliary balance readjustment regulating device in the present invention passes through to install driving on balance frame 8
Device 1, and relative drive sprocket 3 and driven sprocket 9 are provided with balance frame 8, driven actively by driving means 1
Sprocket wheel 3, is mutually in transmission connection by chain 4 between drive sprocket 3 and driven sprocket 9, chain 4 then with balance frame 8 on walking beam
Auxiliary balance weighs 7 and is connected, and when driving means 1 drive drive sprocket 3, chain 4 moves, and now chain 4 drives walking beam
Auxiliary balance weighs 7 and is moved on balance frame 8, reaches by the way and adjusts the purpose that walking beam auxiliary balance weighs 7.
Meanwhile, this beam pumping unit walking beam auxiliary balance readjustment regulating device passes through driving means 1 and then directly adjusts flat
Walking beam auxiliary balance in weighing apparatus frame 8 weighs 7, so can be when beam pumping unit is non-stop-machine to walking beam auxiliary balance weight
7 position is adjusted.
In order to further appreciate that this beam pumping unit walking beam auxiliary balance readjustment regulating device, this beam type will be taken out below
Oil machine walking beam auxiliary balance readjustment regulating device is further explained and illustrates.
As shown in Fig. 2 balance frame 8 extends along its axis direction, the generally rectangular shaped shape of radial section of balance frame 8
Shape.Balance frame 8 has left and right two ends: the left end of balance frame 8 is provided with driven sprocket 9, driven sprocket 9 is by support even
It is connected on balance frame 8, this driven sprocket 9 can rotate on support.The right-hand member of balance frame 8 is provided with driving means 1,
Driving means 1 include motor and the decelerator 2 being in transmission connection with motor.
Decelerator 2 has outfan, and drive sprocket 3 is arranged on the outfan of decelerator 2.Decelerator 2 has input,
The output shaft of motor is in transmission connection with the input phase of decelerator 2.When motor rotates, the output shaft of motor
The input driving decelerator 2 is rotated, and the outfan of the input of decelerator 2 and then drive decelerator 2 rotates, and finally connects
The drive sprocket 3 being connected on the outfan of decelerator 2 rotates.Because motor can occur at a high speed under the ordering about of electric power
Rotation, by arrange decelerator 2 can effectively be slowed down, and then make decelerator 2 outfan more low with one
Rotating speed runs.Secondly as the weight that walking beam auxiliary balance weighs 7 is larger, the torque of motor is less, substantially cannot directly carry
Dynamic walking beam auxiliary balance weighs 7 and moves.After setting decelerator 2, decelerator 2 can effectively increase on drive sprocket 3
Torque so that drive sprocket 3 can drive walking beam auxiliary balance to weigh 7 moves.
It is provided with walking beam auxiliary balance and weighs 7 above balance frame 8, this walking beam auxiliary balance weighs 7 can be along balance frame 8
Axis direction produce position.By adjust walking beam auxiliary balance weigh 7 positions on balance frame 8, and then can realize right
The regulation of the poised state of beam pumping unit.
It is provided with chain 4, chain 4 weighs 7 with walking beam auxiliary balance and is connected between drive sprocket 3 and driven sprocket 9, so that
When driving means 1 drive drive sprocket 3 and driven sprocket 9 to rotate, the chain 4 between drive sprocket 3 and driven sprocket 9 can drive
It is mobile that walking beam auxiliary balance weighs 7.Specifically, chain 4 can be around being located on drive sprocket 3 and driven sprocket 9.Work as drive sprocket
3 when rotating, and it drives chain 4 to move, and simultaneously in the presence of chain 4, driven sprocket 9 is also relative to turning
Dynamic.It is connected because chain 4 weighs 7 with walking beam auxiliary balance, under drive sprocket 3 rotates, chain 4 drives walking beam auxiliary balance weight
7 there is certain displacement.As shown in Figure 2, when drive sprocket 3 rotates clockwise, chain 4 drives walking beam auxiliary balance to weigh 7
There is to the right certain displacement.When driven sprocket 9 rotates counterclockwise, chain 4 drives walking beam auxiliary balance to weigh 7 generations one to the left
Fixed displacement.
Chain 4 weighs 7 and can take various forms with walking beam auxiliary balance and is connected.In one embodiment, chain 4 has
There are two ends, one end of chain 4 is connected to the side that walking beam auxiliary balance weighs 7, and the other end of chain 4 is connected to walking beam auxiliary balance
Weigh 7 opposite side.Walking beam auxiliary balance weighs 7 and is located between drive sprocket 3 and driven sprocket 9.So, when drive sprocket 3 up time
When pin rotates, one end drive walking beam auxiliary balance of chain 4 weighs 7 and certain displacement occurs to the right.When driven sprocket 9 turns counterclockwise
When dynamic, the other end drive walking beam auxiliary balance of chain 4 weighs 7 and certain displacement occurs to the left.In another embodiment, chain
Bar 4 is around being located on drive sprocket 3 and driven sprocket 9 formation closed-loop path, on chain 4 or many places and walking beam auxiliary balance
Weigh 7 to be connected.
The distance between drive sprocket 3 and driven sprocket 9 can be adjusted according to practical situation.Specifically, only need to change
Drive sprocket 3 and driven sprocket 9 can either change between drive sprocket 3 and driven sprocket 9 in the fixed position on balance frame 8
Distance.After the distance between drive sprocket 3 and driven sprocket 9 change, thus it is possible to vary the scope of balance adjustment and
Degree of regulation.Alternatively, it is also possible to change the weight that walking beam auxiliary balance weighs 7 to a certain extent, so can be to a certain degree
The upper scope of regulation changing this beam pumping unit walking beam auxiliary balance readjustment regulating device and degree of regulation.Walking beam auxiliary balance
Weigh 7 weight lighter, the degree of regulation of this beam pumping unit walking beam auxiliary balance readjustment regulating device is higher, the model of balance adjustment
Enclose less.Drive sprocket 3 and the distance between driven sprocket 9 bigger, the reconditioning dress of this beam pumping unit walking beam auxiliary balance
The degree of regulation put is higher, and the scope of balance adjustment is bigger.
It is preferably carried out in mode at one, balance frame 8 is provided with slide rail, the lower section that walking beam auxiliary balance weighs 7 sets
It is equipped with sliding part, sliding part is matched with guide rail 6.Sliding part can include pulley.
In the present embodiment, specifically, this guide rail 6 is arranged on the top of balance frame 8, the same edge of guide rail 6 along
The axis direction of balance frame 8 extends.Driven sprocket 9 may be located inside guide rail 6, the height of driven sprocket 9 and drive sprocket 3
Weigh 7 height less than walking beam auxiliary balance.So, the chain 4 being arranged between drive sprocket 3 and driven sprocket 9 can be substantially
It is in lower end or the lower position that walking beam auxiliary balance weighs 7, chain 4 will not weigh 7 generations with walking beam auxiliary balance and intersect or not
Necessary interference.Secondly, the lower end that the top of chain 4 easily can weigh 7 with walking beam auxiliary balance is attached, in chain 4
Drive walking beam auxiliary balance weigh 7 generation positions mobile when whole walking beam auxiliary balance to weigh 7 more stable.
By arranging guide rail 6 on the balance frame 8 of beam pumping unit walking beam auxiliary balance readjustment regulating device, walking beam is auxiliary
Balance weight 7 lower end is helped to be provided with the pulley matching with guide rail 6, walking beam auxiliary balance weighs 7 can guide rail on balance frame 8
Slide in 6, and then can effectively reduce the frictional force that walking beam auxiliary balance weighs between 7 and balance frame 8, extend balance frame 8
Service life.
In a preferred embodiment, it is provided with for trip at the two ends at the two ends of balance frame 8 or guide rail 6
Beam auxiliary balance weighs 7 block pieces 5 being stopped.
In the present embodiment, block piece 5 is specifically as follows the block vertically extending, and it can be arranged on balance
The two ends of frame 8 or the two ends of guide rail 6, substantially walking beam auxiliary balance weigh 7 left and right sides.When driven sprocket 9 and drive chain
Wheel 3 by chain 4 drive walking beam auxiliary balance weigh 7 mobile when, due to walking beam auxiliary balance weigh 7 weight larger and beam type is taken out
Oil machine is in working, in order to prevent unexpected or out of control occur walking beam auxiliary balance weigh 7 adjust when skid off balance frame 8
Left and right two ends and cause unnecessary accident or damage, be arranged on the two ends of balance frame 8 or the block at the two ends of guide rail 6 can
Carry out effective barrier effect so that 7 are weighed to walking beam auxiliary balance, thus avoiding the occurrence of above-mentioned.
Also proposed a kind of oil pumper in this application, this oil pumper includes walking beam, be arranged on above-mentioned any on walking beam
A kind of beam pumping unit walking beam auxiliary balance readjustment regulating device；It is arranged on the acceleration transducer on walking beam, it is used for detecting
The acceleration transducer being in upstroke or down stroke of walking beam；For driving the motor of walking beam motion；For measuring described electricity
The current sensor of machine running current；Control device, it monitors according to described acceleration transducer and described current sensor
Data the driving means in beam pumping unit walking beam auxiliary balance readjustment regulating device are controlled such that with walking beam auxiliary is flat
Weight moves.
Fig. 3 is the flow chart of the control method of walking beam on pumping units auxiliary balance weight in the embodiment of the present invention, as shown in figure 3,
Also proposed a kind of control method with regard to any of the above-described kind of walking beam on pumping units auxiliary balance weight in the embodiment of the present invention, including with
Lower step:
The balanced degree of oil pumper is judged, described balanced degree at least include poised state, under-balanced state and
Overbalance state.In a feasible embodiment, size can be done work Lai really by measuring the upper and lower stroke of pumping-unit motor
Determine the balanced degree of oil pumper, when the acting of motor upstroke is more than down stroke acting, oil pumper is under-balanced state, works as motor
Less than during down stroke acting, oil pumper is overbalance state for upstroke acting.In another feasible embodiment, by electricity
The balanced degree to determine oil pumper for the size of current of the flow sensor measurement upper and lower stroke of pumping-unit motor.Electricity when upstroke
When dynamo-electric stream is more than the current of electric of down stroke, oil pumper is under-balanced state, when the current of electric of upstroke is less than down stroke
Current of electric when, oil pumper be overbalance state.
Poised state can be that the peak value in up-down stroke for the net torque curve of oil pumper meets pre-conditioned, and this is preset
Condition can the peak value in up-down stroke be of substantially equal or both differences are in certain limit for the net torque curve of oil pumper
Within, peak value during up-down stroke not within the specific limits when be overbalance state or under-balanced state.Overbalance state is to take out
In up-down stroke, upstroke net moment of torsion is less than down stroke net moment of torsion to the net torque curve of oil machine.
When balanced degree is for poised state, as seen in figure la and lb, this figure is without taking out on motor shaft during adjustment
The torque curve of oil machine.It can be seen that from FIG. 1 a that negative value in net moment of torsion in upstroke, in Fig. 1 b, net in up-down stroke
All negative value in moment of torsion.
It is in upstroke stage control walking beam auxiliary balance weight and moves to beam travelling tail end in oil pumper and away from walking beam fulcrum be
At first preset distance.First preset distance passes through according to the heavy weight of walking beam auxiliary balance, pumping-unit workdone graphic, balance journey
Degree, crank angle etc. are calculated.α when after net torque curve beginning to decline to the first set angle, in such as Fig. 1 a
During angle.Control walking beam auxiliary balance to walking beam nose motion at away from walking beam fulcrum for the second preset distance.Control walking beam auxiliary
Help balance weight to move to away from walking beam fulcrum to walking beam fulcrum direction is at the 3rd preset distance and so that walking beam auxiliary balance is in again
On walking beam forearm.Before oil pumper down stroke terminates, control walking beam auxiliary balance to return to and return at walking beam fulcrum.With second
Upstroke starts, and controls the heavy multiple said process of walking beam auxiliary balance.
After said method is processed, Fig. 4 a and 4b is that in the embodiment of the present invention, walking beam on pumping units auxiliary balance focuses on balance
The torque curve figure of the oil pumper after state adjustment, the adjustment after the situation of negative value, Fig. 4 b for upstroke net moment of torsion in Fig. 4 a
For up-down stroke net moment of torsion, the adjustment after negative value all occurs, as shown in Figs. 4a and 4b, it is adjusted by walking beam auxiliary balance again,
The auxiliary balance twisting curve of walking beam auxiliary balance weight, as shown in Fig. 4 a, 4b, realizes the whole oil pumper after dynamic equilibrium net
Any negative value in torque curve.
When balanced degree is for under-balanced state, in up-down stroke, upstroke net moment of torsion is larger, undershoot for net torque curve
Journey net moment of torsion is less.It is in heavy the moving to beam travelling tail end of upstroke stage control walking beam auxiliary balance in oil pumper to prop up away from walking beam
Point is for, at the 4th preset distance, the 4th preset distance is more than the first preset distance.To second after net torque curve begins to decline
During set angle, the second set angle is more than the first set angle, controls walking beam auxiliary balance to walking beam nose motion to away from trip
Beam fulcrum is at the 5th preset distance, and the 5th preset distance is less than the second preset distance.The size of the 5th preset distance depends on
Oil pumper net moment of torsion during walking beam auxiliary balance weight is not had the size of negative value to occur it is therefore an objective to utilize the additional of walking beam auxiliary balance weight
Counterbalance effect not only can offset negative torque moreover it is possible to make net moment of torsion become on the occasion of.Control walking beam auxiliary balance weight to walking beam fulcrum side
It is at the 6th preset distance to moving to away from walking beam fulcrum.When walking beam auxiliary balance is located on walking beam forearm again, the 6th makes a reservation for
Distance is less than the 3rd preset distance；When underbalance is serious, walking beam auxiliary balance is likely located on walking beam postbrachium again, now, the
Six preset distances are less than or equal to or are more than the 3rd preset distance.Before oil pumper down stroke terminates, control walking beam auxiliary balance
Return to and return at walking beam fulcrum.Start with second upstroke, control the heavy multiple said process of walking beam auxiliary balance.
Fig. 5 is the torsion that in the embodiment of the present invention, walking beam on pumping units auxiliary balance focuses on the oil pumper after under-balanced state adjustment
Square curve chart, as shown in figure 5, counter balance torque curve is become counter balance torque 21 curve under underbalance by counter balance torque curve 20,
Oil pumper is led to be in under-balanced state, now net torque curve 30 becomes net moment of torsion 31 curve under underbalance.If here
A walking beam auxiliary balance weight torque curve 40 is added so that it may so that net moment of torsion line under the underbalance of oil pumper on the basis of curve
31 curves are returned to net torque curve 30, namely are returned to the poised state shown in Fig. 1.As long as now by Fig. 4 a, Fig. 4 b
Auxiliary balance torque curve 40 is superimposed with the auxiliary balance torque curve 40 in Fig. 5, you can realize walking beam on pumping units auxiliary flat
Weight dynamic equilibrium.
When balanced degree is for overbalance state, in up-down stroke, upstroke net moment of torsion is less, undershoot for net torque curve
Journey net moment of torsion is larger.It is in heavy the moving to beam travelling tail end of upstroke stage control walking beam auxiliary balance in oil pumper to prop up away from walking beam
Point is at the 7th preset distance.When walking beam auxiliary balance is located on walking beam postbrachium again, described 7th preset distance is less than described
First preset distance.When overbalance is serious, walking beam auxiliary balance is likely located on walking beam forearm again, now, the 7th pre- spacing
All it is possible to from being less than or equal to or more than the first preset distance, specifically see the serious degree of overbalance.When net torque curve is opened
When after beginning to decline to three set angles, the 3rd set angle is less than the first set angle, controls walking beam auxiliary balance to walking beam
To being at the 8th preset distance away from walking beam fulcrum, the 8th preset distance is more than the second preset distance, the 8th pre- spacing to nose motion
Depend on not having oil pumper net moment of torsion during walking beam auxiliary balance weight the size of negative value to occur it is therefore an objective to assist using walking beam from size
The additional equilibrium effect of balance weight not only can offset negative torque moreover it is possible to make net moment of torsion become on the occasion of.Control walking beam auxiliary balance weight
Moving to away from walking beam fulcrum to walking beam fulcrum direction is at the 9th preset distance, and the 9th preset distance is more than the 3rd preset distance.
Before oil pumper down stroke terminates, control walking beam auxiliary balance to return to and return at walking beam fulcrum.Start with second upstroke,
Control the heavy multiple said process of walking beam auxiliary balance.
Fig. 6 is the torsion that in the embodiment of the present invention, walking beam on pumping units auxiliary balance focuses on the oil pumper after the adjustment of overbalance state
Square curve chart, as shown in fig. 6, counter balance torque curve 20 becomes counter balance torque 22 curve under overbalance, leads to oil pumper to be in
Overbalance state, now net torque curve 30 become net moment of torsion 32 curve under overbalance.If added on the basis of this curve
Article one, auxiliary balance torque curve 40 is so that it may so that net moment of torsion 32 curve under the overbalance of oil pumper is returned to net torque curve
30, namely it is returned to the poised state shown in Fig. 1.As long as now by the auxiliary balance torque curve 40 in Fig. 4 a, Fig. 4 b and Fig. 6
In auxiliary balance torque curve 40 superimposed, you can realize the dynamic equilibrium again of walking beam on pumping units auxiliary balance.
If during walking beam is in upstroke, when motor operating current increases, control system sends instruction, makes walking beam
Auxiliary balance weight moves to beam travelling tail end；When electric current declines, control system sends instruction, makes walking beam auxiliary balance weight to caput Equi Asini
Direction is moved.If during walking beam is in down stroke, when motor operating current increases, control system sends instruction, makes trip
Beam auxiliary balance weight moves to caput Equi Asini；When electric current declines, control system sends instruction, makes walking beam auxiliary balance weight to walking beam tail
Extreme direction moves.So both can achieve the dynamic equilibrium of oil pumper.
When oil pumper works, it is in upstroke or down stroke using acceleration transducer detection walking beam, simultaneously permissible
Measure the balanced degree that motor operating current determines oil pumper using current sensor.Driving means are controlled by control device
Operating realize walking beam auxiliary balance weight is carried out around walking beam fulcrum with swinging up and down of walking beam with the change of front and back position,
The effect improving counterbalance effect can not only be played moreover it is possible to play reduction motor net moment of torsion further, and then reduce power of motor
Effect, is also avoided that the situation of negative value in Motor torque (or power) simultaneously, improves the running status of motor.Airborne when pumping
When lotus deviates poised state, control system is according to the parameter detecting, the side being moved forward and backward by change walking beam auxiliary balance again
To improve counterbalance effect to, displacement, to realize the dynamic equilibrium of oil pumper.
Each embodiment in this specification is all described by the way of going forward one by one, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar partly mutually referring to.
Above-described embodiment only technology design to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implements according to this, can not be limited the scope of the invention with this.All according to the present invention
Equivalence changes or modification that spirit is made, all should be included within the scope of the present invention.
Claims (13)
1. a kind of control method of walking beam on pumping units auxiliary balance weight is it is characterised in that comprise the following steps:
The balanced degree of oil pumper is judged, described balanced degree at least includes poised state, under-balanced state and excessively flat
Weighing apparatus state；
When balanced degree is for poised state, it is in upstroke stage control walking beam auxiliary balance weight to beam travelling tail end in oil pumper
Moving to away from walking beam fulcrum is at the first preset distance；When after net torque curve beginning to decline to the first set angle, control
Walking beam auxiliary balance is to walking beam nose motion at away from walking beam fulcrum for the second preset distance；Control walking beam auxiliary balance weight to trip
It is at the 3rd preset distance and so that walking beam auxiliary balance is on walking beam forearm that beam fulcrum direction moves to away from walking beam fulcrum again；When
Before oil pumper down stroke terminates, control walking beam auxiliary balance to return to and return at walking beam fulcrum；
When balanced degree is for under-balanced state, it is in upstroke stage control walking beam auxiliary balance weight to walking beam tail in oil pumper
To being at the 4th preset distance away from walking beam fulcrum, the 4th preset distance is more than the first preset distance for end motion；Work as net torque curve
When after beginning to decline to the second set angle, the second set angle is more than the first set angle, controls walking beam auxiliary balance to trip
To being at the 5th preset distance away from walking beam fulcrum, the 5th preset distance is less than the second preset distance to beam nose motion；Control walking beam
It is at the 6th preset distance that auxiliary balance weight moves to away from walking beam fulcrum to walking beam fulcrum direction；When oil pumper down stroke terminates
Before, control walking beam auxiliary balance to return to and return at walking beam fulcrum；
When balanced degree is for overbalance state, it is in upstroke stage control walking beam auxiliary balance weight to walking beam tail in oil pumper
End motion is at away from walking beam fulcrum for the 7th preset distance；When after net torque curve beginning to decline to three set angles, the
Three set angles are less than the first set angle, control walking beam auxiliary balance extremely pre- for the 8th away from walking beam fulcrum to walking beam nose motion
At set a distance, the 8th preset distance is more than the second preset distance；Walking beam auxiliary balance weight is controlled to move to walking beam fulcrum direction
It is at the 9th preset distance away from walking beam fulcrum, the 9th preset distance is more than the 3rd preset distance；Before oil pumper down stroke terminates,
Control walking beam auxiliary balance to return to return at walking beam fulcrum.
2. the control method of walking beam on pumping units auxiliary balance weight according to claim 1 is it is characterised in that poised state is
The peak value in up-down stroke for the net torque curve of oil pumper meets pre-conditioned.
3. the control method of walking beam on pumping units auxiliary balance according to claim 1 weight is it is characterised in that under-balanced state
For oil pumper net torque curve in up-down stroke, upstroke net moment of torsion be more than down stroke net moment of torsion.
4. the control method of walking beam on pumping units auxiliary balance according to claim 1 weight is it is characterised in that overbalance state
For oil pumper net torque curve in up-down stroke, upstroke net moment of torsion be less than down stroke net moment of torsion.
5. the control method of walking beam on pumping units auxiliary balance weight according to claim 1 is it is characterised in that work as walking beam auxiliary
When balance weight is located on walking beam forearm, the 6th preset distance is less than the 3rd preset distance.
6. the control method of walking beam on pumping units auxiliary balance according to claim 1 weight is it is characterised in that when underbalance is tight
During weight, walking beam auxiliary balance is located on walking beam postbrachium again, and the 6th preset distance is less than or equal to or is more than the 3rd preset distance.
7. the control method of walking beam on pumping units auxiliary balance weight according to claim 1 is it is characterised in that work as walking beam auxiliary
When balance weight is located on walking beam postbrachium, described 7th preset distance is less than described first preset distance.
8. the control method of walking beam on pumping units auxiliary balance according to claim 1 weight is it is characterised in that when overbalance is tight
During weight, walking beam auxiliary balance is located on walking beam forearm again, and the 7th preset distance is less than or equal to or is more than the first preset distance.
9. the control method of walking beam on pumping units auxiliary balance weight according to claim 1 is it is characterised in that taken out by measurement
Oil machine motor upper and lower stroke acting size is determining the balanced degree of oil pumper.
10. the control method of walking beam on pumping units auxiliary balance weight according to claim 9 is it is characterised in that work as on motor
More than during down stroke acting, oil pumper is under-balanced state for stroke acting, when the acting of motor upstroke is less than down stroke acting,
Oil pumper is overbalance state.
The control method of 11. walking beam on pumping units auxiliary balance weights according to claim 1 is it is characterised in that pass through electric current
The balanced degree to determine oil pumper for the size of current of the sensor measurement upper and lower stroke of pumping-unit motor.
The control method of 12. walking beam on pumping units auxiliary balance weights according to claim 11 is it is characterised in that work as upstroke
Current of electric be more than down stroke current of electric when, oil pumper be under-balanced state, when the current of electric of upstroke is less than down
During the current of electric of stroke, oil pumper is overbalance state.
The control method of 13. walking beam on pumping units auxiliary balances according to claim 1 weights is it is characterised in that described oil pumping
Machine includes:
Walking beam；
It is arranged on the walking beam auxiliary balance readjustment regulating device on described walking beam, walking beam auxiliary balance readjustment regulating device includes: balance
Frame, balance frame is provided with driven sprocket；It is arranged on the walking beam auxiliary balance weight on balance frame；It is arranged on balance frame
On driving means, driving means include drive sprocket, are provided with chain, chain and walking beam between drive sprocket and driven sprocket
Auxiliary balance heavy phase connects, so that when driving means drive drive sprocket and driven sprocket to rotate, drive sprocket and driven sprocket
Between chain walking beam auxiliary balance can be driven to move again；
It is arranged on the acceleration transducer on described walking beam, it is used for detecting the acceleration being in upstroke or down stroke of walking beam
Sensor；
For driving the motor of described walking beam motion；
For measuring the current sensor of described motor operating current；
Control device, the data that it monitors according to described acceleration transducer and described current sensor is to beam pumping unit
Driving means in walking beam auxiliary balance readjustment regulating device are controlled such that walking beam auxiliary balance moves again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610890926.1A CN106368936B (en) | 2016-10-12 | 2016-10-12 | Control method of beam-pumping unit walking beam auxiliary counterweight |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610890926.1A CN106368936B (en) | 2016-10-12 | 2016-10-12 | Control method of beam-pumping unit walking beam auxiliary counterweight |
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| US20050155759A1 (en) * | 2001-10-02 | 2005-07-21 | Lufkin Industries, Inc. | Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
| US20050167156A1 (en) * | 2004-01-30 | 2005-08-04 | Cdx Gas, Llc | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement |
| CN1699726A (en) * | 2004-05-19 | 2005-11-23 | 北京铠巨三利科技有限公司 | Using method for mounting an overrunning clutch on a beam pumping well |
| CN101725332A (en) * | 2008-10-31 | 2010-06-09 | 高阳特 | Swinging bell automatic leveling energy-saving type oil pumping machine |
| CN104453791A (en) * | 2013-09-17 | 2015-03-25 | 中国石油天然气股份有限公司 | Balance adjusting device and method of beam-pumping unit |
| CN205422654U (en) * | 2016-04-01 | 2016-08-03 | 中国石油大学(华东) | Beam -pumping unit automatic balance adjusting device |
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2016
- 2016-10-12 CN CN201610890926.1A patent/CN106368936B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155759A1 (en) * | 2001-10-02 | 2005-07-21 | Lufkin Industries, Inc. | Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
| US20050167156A1 (en) * | 2004-01-30 | 2005-08-04 | Cdx Gas, Llc | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement |
| CN1699726A (en) * | 2004-05-19 | 2005-11-23 | 北京铠巨三利科技有限公司 | Using method for mounting an overrunning clutch on a beam pumping well |
| CN101725332A (en) * | 2008-10-31 | 2010-06-09 | 高阳特 | Swinging bell automatic leveling energy-saving type oil pumping machine |
| CN104453791A (en) * | 2013-09-17 | 2015-03-25 | 中国石油天然气股份有限公司 | Balance adjusting device and method of beam-pumping unit |
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