CN106368936B - The control method of walking beam on pumping units auxiliary balance weight - Google Patents
The control method of walking beam on pumping units auxiliary balance weight Download PDFInfo
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- CN106368936B CN106368936B CN201610890926.1A CN201610890926A CN106368936B CN 106368936 B CN106368936 B CN 106368936B CN 201610890926 A CN201610890926 A CN 201610890926A CN 106368936 B CN106368936 B CN 106368936B
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- walking beam
- auxiliary balance
- preset distance
- balance weight
- oil pumper
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- 238000005086 pumping Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 210000000245 forearm Anatomy 0.000 claims abstract description 10
- 230000007423 decrease Effects 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000001133 acceleration Effects 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 2
- 238000010516 chain-walking reaction Methods 0.000 claims 1
- 230000008859 change Effects 0.000 description 12
- 230000033228 biological regulation Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 7
- 241001023788 Cyttus traversi Species 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 240000006829 Ficus sundaica Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 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
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 230000000750 progressive 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 kind of control method of walking beam on pumping units auxiliary balance weight, comprise the following steps：Balanced degree to oil pumper judges that balanced degree at least includes poised state, under-balanced state and overbalance state；When balanced degree is poised state, it is at the first preset distance to be moved in oil pumper in upstroke stage control walking beam auxiliary balance weight to beam travelling tail end away from walking beam fulcrum；When after net torque curve is begun to decline to the first set angle, it is at the second preset distance extremely away from walking beam fulcrum to walking beam nose motion to control walking beam auxiliary balance；Control walking beam auxiliary balance weight to move to walking beam fulcrum direction to be at the 3rd preset distance away from walking beam fulcrum and make walking beam auxiliary balance again on the walking beam forearm；Before oil pumper down stroke terminates, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum.The present invention can carry out dynamic control to oil pumper, and the dynamic equilibrium that oil pumper is realized in position is constantly changed with the rotation walking beam auxiliary balance weight of crank.
Description
Technical field
The present invention relates to oil-gas mining technical field, more 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, the generally load to oil pumper are balanced, use
Method is usually to install gravitational equilibrium block additional on crank or walking beam.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 accomplished by after shutting down carrying out the balance weight of oil pumper
Position adjustment.The operability of balancing is improved to solve the above problems, then occur in that again increases walking beam auxiliary on walking beam
Balance weight, and using different modes such as hand-hydraulic system, stepper motors the position of walking beam auxiliary balance weight is shut down or
Regulation is not shut down, so-called not shut down regulation be to calculate the poised state of an oil pumper every certain hour, if necessary to just
The position of walking beam auxiliary balance weight is adjusted, just next time survey of the fixed position after certain hour is adjusted afterwards.
In certain certain time of the above-mentioned oil pumper work with walking beam auxiliary balance weight, its position is to maintain constant
's.Fig. 1 a, Fig. 1 b for the oil pumper load-torque on motor shaft in the prior art, counter balance torque and net torque curve signal
Figure, as shown in Fig. 1 a, 1b, oil pumper load-torque curve is that horse head polished rod load acts on reduction box song by quadric chain
Moment of torsion on arbor is with the change curve of crank angle, and counter balance torque curve is that balance weight is acted on reduction box crank axle
Moment of torsion with the change curve of crank angle, net torque curve be oil pumper load-torque curve with after counter balance torque curve combining
Torque curve, net moment of torsion is that the motor for driving oil pumper needs the moment of torsion that overcomes.When the oil pumper of walking beam auxiliary balance weight
Balance it is general when, driving oil pumper operation motor shaft on oil pumper load-torque, 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, upstroke peak torque is more than down stroke peak torque during underbalance, and upstroke peak torque is small during overbalance
In down stroke peak torque.Now need to be adjusted to make it be returned to poised state, for example, when oil pumper underbalance, will
Walking beam auxiliary balance huge profit is moved a certain distance with modes such as stepper motor, hand-hydraulic systems 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 (horse head direction).Adjusting rear oil pumper
During work, it is fixed that walking beam auxiliary balance, which restores position,.Detected, sent out by the balance to the oil pumper after adjustment
Existing above-mentioned method of adjustment serves certain help to the balance for improving oil pumper.
But the above method has been put on walking beam equivalent to by a part of balance weight, counter balance torque curve is still approximate
Sine curve, therefore in the case where net moment of torsion peak value is balanced, it is difficult to eliminate and occur the situation of negative torque on net torque curve not
The net torque curve shape of oil pumper can be changed, it is negative situation that one section of moment of torsion still occurs on the curve, such as Fig. 1 a, 1b institute
Show, illustrate that a bit of situation in generator operation state still occurs in the work of motor after balancing, this
Motor can be affected, although the influence may be smaller.Therefore, the poised state for how adjusting oil pumper is still deposited
In the necessary and possible of further regulation improvement.
The content of the invention
In order to overcome the drawbacks described above of prior art, technical problem to be solved of the embodiment of the present invention there is provided one kind
The control method of walking beam on pumping units auxiliary balance weight, it can carry out dynamic control again to walking beam on pumping units auxiliary balance, with song
The rotation walking beam auxiliary balance weight 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：
Balanced degree to oil pumper judges, the balanced degree at least include poised state, under-balanced state and
Overbalance state；
When balanced degree is poised state, upstroke stage control walking beam auxiliary balance weight is in walking beam in oil pumper
It is at the first preset distance that tail end, which is moved to away from walking beam fulcrum,；When after net torque curve is begun to decline to the first set angle,
It is at the second preset distance extremely away from walking beam fulcrum to walking beam nose motion to control walking beam auxiliary balance；Control walking beam auxiliary balance weight
To walking beam fulcrum direction move to away from walking beam fulcrum be the 3rd preset distance at and make walking beam auxiliary balance again be in walking beam forearm
On；Before oil pumper down stroke terminates, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum；
When balanced degree is under-balanced state, upstroke stage control walking beam auxiliary balance weight is in trip in oil pumper
It is that at the 4th preset distance, the 4th preset distance is more than the first preset distance that tail beam, which is moved to away from walking beam fulcrum,；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 extremely away from walking beam fulcrum at the 5th preset distance, 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 is moved to away from walking beam fulcrum to walking beam fulcrum direction；When oil pumper down stroke knot
Shu Qian, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum；
When balanced degree is overbalance state, upstroke stage control walking beam auxiliary balance weight is in trip in oil pumper
It is at the 7th preset distance that tail beam, which is moved to away from walking beam fulcrum,；To the 3rd set angle after net torque curve is begun to decline
When, the 3rd set angle is less than the first set angle, control the walking beam auxiliary balance extremely away from walking beam fulcrum to be to walking beam nose motion
At 8th preset distance, the 8th preset distance is more than the second preset distance；Walking beam auxiliary balance weight is controlled to walking beam fulcrum direction
It is that at the 9th preset distance, the 9th preset distance is more than the 3rd preset distance to move to away from walking beam fulcrum；When oil pumper down stroke
Before end, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum.
It is preferably carried out in one kind in mode, poised state is peak value of the net torque curve of oil pumper in up-down stroke
Meet preparatory condition.
Be preferably carried out in one kind in mode, under-balanced state for 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 one kind in mode, overbalance state for 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 one kind in mode, 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 one kind in mode, 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 more than the 3rd preset distance.
It is preferably carried out in one kind in mode, when walking beam auxiliary balance is located on walking beam postbrachium again, the described 7th makes a reservation for
Distance is less than first preset distance.
It is preferably carried out in one kind in mode, 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 more than the first preset distance.
It is preferably carried out in one kind in mode, oil pumping is determined by measuring the upper and lower stroke acting size of pumping-unit motor
The balanced degree of machine.
It is preferably carried out in one kind in mode, when the acting of motor upstroke is more than down stroke acting, oil pumper is deficient 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 one kind in mode, the electric current by the upper and lower stroke of current sensor measurement pumping-unit motor is big
The small balanced degree to determine oil pumper.
It is preferably carried out in one kind in mode, 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 one kind in mode, the oil pumper includes：Walking beam；It is arranged on the walking beam auxiliary on the walking beam
Balance weight adjusting means, walking beam auxiliary balance, which resets regulating device, to be included：Driven sprocket is provided with balance frame, balance frame；
It is arranged on the walking beam auxiliary balance weight on balance frame；The drive device on balance frame is arranged on, drive device is included actively
Sprocket wheel, is provided with chain, chain is connected with walking beam auxiliary balance heavy phase, so that drive device between drive sprocket and driven sprocket
When driving drive sprocket and driven sprocket rotation, the chain between drive sprocket and driven sprocket can drive walking beam auxiliary balance weight
It is mobile；The acceleration transducer on the walking beam is arranged on, it is used for the acceleration in upstroke or down stroke for detecting walking beam
Spend sensor；Motor for driving the walking beam motion；Current sensor for determining the motor operating current；Control
Device, its data monitored according to the acceleration transducer and the current sensor are aided in beam pumping unit walking beam
Drive device in balance weight adjusting means is controlled such that walking beam auxiliary balance is moved again.
Technical scheme has following notable beneficial effect：
The control method of walking beam on pumping units auxiliary balance weight can be realized to walking beam auxiliary balance weight in the embodiment of the present invention
The change of front and back position is carried out around walking beam fulcrum with swinging up and down for walking beam, can not only play improves the work of counterbalance effect
With, moreover it is possible to reduction motor net moment of torsion is further functioned as, and then reduces the effect of power of motor, while being also avoided that Motor torque
There is the situation of negative value in (or power), improves the running status of motor.When oil pumper load deviates poised state, it can pass through
Changing direction, displacement that walking beam auxiliary balance moves forward and backward again improves counterbalance effect, realizes the dynamic equilibrium of oil pumper.
Brief description of the drawings
Accompanying drawing described here is only used for task of explanation, and is not intended in any way limit model disclosed by the invention
Enclose.In addition, shape and proportional sizes of each part in figure etc. are only schematical, the understanding of the present invention is used to help, and
It is not the shape and proportional sizes for specifically limiting each part of the 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 are the oil pumper load-torque on motor shaft in the 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 be respectively in the embodiment of the present invention walking beam on pumping units auxiliary balance focus on taking out after poised state adjustment
The torque curve figure of oil machine.
The torsion for the oil pumper that Fig. 5 is focused on after under-balanced state adjustment for walking beam on pumping units auxiliary balance in the embodiment of the present invention
Square curve map.
The torsion for the oil pumper that Fig. 6 is focused on after the adjustment of overbalance state for walking beam on pumping units auxiliary balance in the embodiment of the present invention
Square curve map.
The reference of the figures above：
1st, drive device；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 is adjusted.
Embodiment
With reference to the description of accompanying drawing and the specific embodiment of the invention, the details of the present invention can be clearly understood.But
It is, the embodiment of invention described herein to be only used for explaining the purpose of the present invention, and can not understands in any way
Into being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that any 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
A kind of beam pumping unit walking beam auxiliary balance is proposed shown in Fig. 2, in the embodiment of the present invention and resets regulating device, beam type is taken out
Oil machine walking beam auxiliary balance, which resets regulating device, to be included：Driven sprocket 9 is provided with balance frame 8, balance frame 8；It is arranged on flat
Walking beam auxiliary balance in weighing apparatus frame 8 weighs 7；The drive device 1 on balance frame 8 is arranged on, drive device 1 includes drive sprocket
3, chain 4 is provided between drive sprocket 3 and driven sprocket 9, chain 4 weighs 7 with walking beam auxiliary balance and is connected, so that driving is filled
When putting 1 drive drive sprocket 3 and the rotation of driven sprocket 9, the chain 4 between drive sprocket 3 and driven sprocket 9 can drive walking beam auxiliary
Balance weight 7 is helped to move.
Beam pumping unit walking beam auxiliary balance in the present invention is resetted regulating device and driven by being installed on balance frame 8
Device 1, and relative drive sprocket 3 and driven sprocket 9 is provided with balance frame 8, driven actively by drive device 1
Sprocket wheel 3, is mutually connected between drive sprocket 3 and driven sprocket 9 by chain 4, chain 4 then with the walking beam on balance frame 8
Auxiliary balance weighs 7 and is connected, and when drive device 1 drives drive sprocket 3, chain 4 is moved, and now chain 4 drives walking beam
Auxiliary balance weighs 7 and is moved on balance frame 8, reaches that regulation walking beam auxiliary balance weighs 7 purpose through the above way.
Meanwhile, the beam pumping unit walking beam auxiliary balance is resetted regulating device by drive device 1 and then directly adjusted 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 resets regulating device, this beam type will be taken out below
Oil machine walking beam auxiliary balance resets regulating device and 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 ends：The left end of balance frame 8 is provided with driven sprocket 9, driven sprocket 9 is connected by support
It is connected on balance frame 8, the driven sprocket 9 can be rotated on support.The right-hand member of balance frame 8 is provided with drive device 1,
Drive device 1 includes motor and the decelerator 2 being connected with motor.
Decelerator 2 has output end, and drive sprocket 3 is arranged in the output end of decelerator 2.Decelerator 2 has input,
The input of the output shaft of motor and decelerator 2 is mutually connected.When motor is rotated, the output shaft of motor
The input of decelerator 2 is driven to be rotated, the input of decelerator 2 and then the output end rotation for driving decelerator 2 finally connect
The drive sprocket 3 being connected in the output end of decelerator 2 rotates.Because motor can occur at a high speed under the driving of electric power
Rotation, by setting decelerator 2 effectively to be slowed down, and then make it that the output end of decelerator 2 is more low with one
Rotating speed is run.Secondly as the weight that walking beam auxiliary balance weighs 7 is larger, the torque of motor is smaller, substantially can not direct band
Dynamic walking beam auxiliary balance weighs 7 and moved.After decelerator 2 is set, decelerator 2 can effectively increase on drive sprocket 3
Torque so that drive sprocket 3 can drive walking beam auxiliary balance to weigh 7 and move.
The top of balance frame 8 is provided with walking beam auxiliary balance and weighs 7, the walking beam auxiliary balance weighs 7 can be along balance frame 8
Axis direction produce position.7 positions on balance frame 8 are weighed by adjusting walking beam auxiliary balance, and then can be realized pair
The regulation of the poised state of beam pumping unit.
Chain 4 is provided between drive sprocket 3 and driven sprocket 9, chain 4 weighs 7 with walking beam auxiliary balance and is connected, so that
When drive device 1 drives drive sprocket 3 and the rotation of driven sprocket 9, the chain 4 between drive sprocket 3 and driven sprocket 9 can drive
Walking beam auxiliary balance weighs 7 and moved.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, while in the presence of chain 4, the also relative generation turn of driven sprocket 9
It is dynamic.It is connected because chain 4 weighs 7 with walking beam auxiliary balance, under the rotation of drive sprocket 3, chain 4 drives walking beam auxiliary balance weight
7 occur certain displacement.As shown in Figure 2, when drive sprocket 3 is rotated clockwise, chain 4 drives walking beam auxiliary balance to weigh 7
Certain displacement occurs to the right.When driven sprocket 9 is rotated counterclockwise, the drive of chain 4 walking beam auxiliary balance weighs 7 and one occurs to the left
Fixed displacement.
Chain 4 weighs 7 and can taken various forms with walking beam auxiliary balance to be 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.In this way, when the up time of drive sprocket 3
When pin is rotated, 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 forms closed-loop path around being located on drive sprocket 3 and driven sprocket 9, one or more on chain 4 and walking beam auxiliary balance
7 are weighed to be connected.
The distance between drive sprocket 3 and driven sprocket 9 can be adjusted according to actual conditions.Specifically, only need to change
The fixed position of drive sprocket 3 and driven sprocket 9 on balance frame 8 can either change between drive sprocket 3 and driven sprocket 9
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., so can be to a certain degree alternatively, it is also possible to change the weight that walking beam auxiliary balance weighs 7 to a certain extent
The scope and degree of regulation of the upper regulation for changing this beam pumping unit walking beam auxiliary balance readjustment regulating device.Walking beam auxiliary balance
The weight for weighing 7 is lighter, and the degree of regulation that this beam pumping unit walking beam auxiliary balance resets regulating device is higher, the model of balance adjustment
Enclose smaller.Drive sprocket 3 and the distance between driven sprocket 9 are bigger, and this beam pumping unit walking beam auxiliary balance resets section dress
The degree of regulation put is higher, and the scope of balance adjustment is bigger.
It is preferably carried out at one in mode, slide rail is provided with balance frame 8, the lower section that walking beam auxiliary balance weighs 7 is set
Sliding part is equipped with, sliding part matches with guide rail 6.Sliding part can include pulley.
In the present embodiment, specifically, the guide rail 6 is arranged on the top of balance frame 8, guide rail 6 it is same along along
The axis direction extension of balance frame 8.Driven sprocket 9 can be located inside guide rail 6, the height of driven sprocket 9 and drive sprocket 3
Less than the height that walking beam auxiliary balance weighs 7.In this way, the chain 4 being arranged between drive sprocket 3 and driven sprocket 9 can be substantially
Weighed in walking beam auxiliary balance 7 lower end or lower position, 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
Whole walking beam auxiliary balance weighs 7 and more stablized when drive walking beam auxiliary balance weighs 7 generation positions movement.
Guide rail 6 is set on balance frame 8 by resetting regulating device in beam pumping unit walking beam auxiliary balance, walking beam is auxiliary
The lower end of balance weight 7 is helped to be provided with the pulley matched with guide rail 6, walking beam auxiliary balance weighs 7 can be in the guide rail on balance frame 8
Slided in 6, and then can effectively reduce walking beam auxiliary balance and weigh frictional force between 7 and balance frame 8, extend balance frame 8
Service life.
In a preferred embodiment, it is used at the two ends of balance frame 8 or being provided at both ends with for guide rail 6 to trip
Beam auxiliary balance weighs 7 block pieces 5 stopped.
In the present embodiment, block piece 5 is specifically as follows the block vertically extended, 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
When wheel 3 drives the walking beam auxiliary balance to weigh 7 movement by chain 4, the weight for weighing 7 due to walking beam auxiliary balance is larger and beam type is taken out
Oil machine be in working in, in order to prevent it is unexpected or it is out of control occur walking beam auxiliary balance weigh 7 regulation when skid off balance frame 8
Left and right ends and cause unnecessary accident or damage, the block for being arranged on the two ends of balance frame 8 or the two ends of guide rail 6 can
Effective barrier effect is carried out to weigh 7 to walking beam auxiliary balance, so as to avoid the occurrence of above-mentioned.
A kind of oil pumper is also proposed in this application, the oil pumper includes walking beam, be arranged on above-mentioned any on walking beam
A kind of beam pumping unit walking beam auxiliary balance resets regulating device；The acceleration transducer on walking beam is arranged on, it is used to detect
The acceleration transducer in upstroke or down stroke of walking beam；For the motor for driving walking beam to move；For determining the electricity
The current sensor of machine running current；Control device, it is monitored according to the acceleration transducer and the current sensor
The drive device resetted to beam pumping unit walking beam auxiliary balance in regulating device of data be controlled such that walking beam auxiliary is flat
Weight is moved.
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,
It also proposed a kind of control method on 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：
Balanced degree to oil pumper judges, the balanced degree at least include poised state, under-balanced state and
Overbalance state.In a feasible embodiment, size can be done work come 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
When upstroke acting is less than down stroke acting, oil pumper is overbalance state.In another feasible embodiment, pass through electricity
Flow sensor measures the size of current of the upper and lower stroke of pumping-unit motor to determine the balanced degree of oil pumper.When the electricity of upstroke
When electromechanics 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 peak value of the net torque curve of oil pumper in up-down stroke meets preparatory condition, and this is preset
Condition can be of substantially equal or both the difference of peak value of the net torque curve in up-down stroke of oil pumper in certain limit
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
The net torque curve of oil machine is in up-down stroke, and upstroke net moment of torsion is less than down stroke net moment of torsion.
When balanced degree is poised state, as seen in figure la and lb, the 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 net moment of torsion occurs in negative value, Fig. 1 b in upstroke, it is net in up-down stroke
There is negative value in moment of torsion.
It is in upstroke stage control walking beam auxiliary balance weight in oil pumper and is moved to beam travelling tail end and is away from walking beam fulcrum
At first preset distance.First preset distance passes through the weight according to walking beam auxiliary balance weight, pumping-unit workdone graphic, balance journey
Degree, crank angle etc. are calculated.When after net torque curve is begun to decline to the first set angle, the α in such as Fig. 1 a
During angle.It is at the second preset distance extremely away from walking beam fulcrum to walking beam nose motion to control walking beam auxiliary balance.Control walking beam auxiliary
Help balance weight to walking beam fulcrum direction move to away from walking beam fulcrum be the 3rd preset distance at and walking beam auxiliary balance is in again
On walking beam forearm.Before oil pumper down stroke terminates, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum.With second
Upstroke starts, the heavy multiple said process of control walking beam auxiliary balance.
After the above method is handled, Fig. 4 a and 4b focus on balance for walking beam on pumping units auxiliary balance in the embodiment of the present invention
The torque curve figure of oil pumper after state adjustment, Fig. 4 a are that upstroke net moment of torsion the adjustment after the situation of negative value, Fig. 4 b occurs
There is the adjustment after negative value for up-down stroke net moment of torsion, it is as shown in Figs. 4a and 4b, it is adjusted again by walking beam auxiliary balance,
The auxiliary balance twisting curve of walking beam auxiliary balance weight realizes that the whole oil pumper after dynamic equilibrium is net as shown in Fig. 4 a, 4b
Torque curve does not occur any negative value.
When balanced degree is under-balanced state, net torque curve is in up-down stroke, and upstroke net moment of torsion is larger, undershoot
Journey net moment of torsion is smaller.Upstroke stage control walking beam auxiliary balance weight is in oil pumper to move to away from walking beam branch to beam travelling tail end
Point is at the 4th preset distance, the 4th preset distance is more than the first preset distance.To second after net torque curve is begun to decline
During set angle, the second set angle is more than the first set angle, and control walking beam auxiliary balance is to walking beam nose motion to away from trip
Beam fulcrum is that at the 5th preset distance, the 5th preset distance is less than the second preset distance.The size of 5th preset distance is depended on
There is no oil pumper net moment of torsion during walking beam auxiliary balance weight the size of negative value occur, it is therefore an objective to utilize the additional of walking beam auxiliary balance weight
Counterbalance effect can not only offset negative torque, moreover it is possible to make net moment of torsion turn on the occasion of.Walking beam auxiliary balance weight is controlled 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 more than the 3rd preset distance.Before oil pumper down stroke terminates, walking beam auxiliary balance is controlled
Return to and return at walking beam fulcrum.As second upstroke starts, the heavy multiple said process of control walking beam auxiliary balance.
The torsion for the oil pumper that Fig. 5 is focused on after under-balanced state adjustment for walking beam on pumping units auxiliary balance in the embodiment of the present invention
Square curve map, as shown in figure 5, counter balance torque curve is become the curve of counter balance torque 21 under underbalance by counter balance torque curve 20,
Oil pumper is caused to be in under-balanced state, now net torque curve 30 becomes the curve of net moment of torsion 31 under underbalance.If herein
Plus a walking beam auxiliary balance weight torque curve 40 on the basis of curve, so that it may so that the net moment of torsion line under the underbalance of oil pumper
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 and auxiliary balance torque curve 40 in Fig. 5 are superimposed, you can realize that walking beam on pumping units auxiliary is flat
Weight dynamic equilibrium.
When balanced degree is overbalance state, net torque curve is in up-down stroke, and upstroke net moment of torsion is smaller, undershoot
Journey net moment of torsion is larger.Upstroke stage control walking beam auxiliary balance weight is in oil pumper to move to away from walking beam branch to beam travelling tail end
Point is at the 7th preset distance.When walking beam auxiliary balance is located on walking beam postbrachium again, the 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
From being less than or equal to or being possible to more than the first preset distance, the serious degree of overbalance is specifically seen.When net torque curve is opened
When beginning after declining to three set angles, the 3rd set angle is less than the first set angle, controls walking beam auxiliary balance to walking beam
Nose motion is that at the 8th preset distance, the 8th preset distance is more than the second preset distance, the 8th pre- spacing extremely away from walking beam fulcrum
There is the size of negative value in oil pumper net moment of torsion when being depended on from size without walking beam auxiliary balance weight, it is therefore an objective to utilize walking beam auxiliary
The additional equilibrium effect of balance weight can not only offset negative torque, moreover it is possible to make net moment of torsion turn on the occasion of.Control walking beam auxiliary balance weight
It is that at the 9th preset distance, the 9th preset distance is more than the 3rd preset distance to be moved to walking beam fulcrum direction away from walking beam fulcrum.
Before oil pumper down stroke terminates, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum.As second upstroke starts,
Control the heavy multiple said process of walking beam auxiliary balance.
The torsion for the oil pumper that Fig. 6 is focused on after the adjustment of overbalance state for walking beam on pumping units auxiliary balance in the embodiment of the present invention
Square curve map, as shown in fig. 6, counter balance torque curve 20 becomes the curve of counter balance torque 22 under overbalance, causes oil pumper to be in
Overbalance state, now net torque curve 30 become the curve of net moment of torsion 32 under overbalance.If added on the basis of this curve
One auxiliary balance torque curve 40, so that it may so that the curve of net moment of torsion 32 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 and Fig. 6 in Fig. 4 a, Fig. 4 b
In auxiliary balance torque curve 40 it is superimposed, you can realize the dynamic equilibrium again of walking beam on pumping units auxiliary balance.
If walking beam is in during upstroke, when motor operating current increase, control system sends instruction, makes walking beam
Auxiliary balance weight is moved to beam travelling tail end；When electric current declines, control system sends instruction, makes walking beam auxiliary balance weight to horse head
Move in direction.If walking beam is in during down stroke, when motor operating current increase, control system sends instruction, makes trip
Beam auxiliary balance weight is moved to horse head；When electric current declines, control system sends instruction, makes walking beam auxiliary balance weight to walking beam tail
Extreme direction is moved.It so can both realize the dynamic equilibrium of oil pumper.
When oil pumper works, upstroke or down stroke are in using acceleration transducer detection walking beam, while can be with
Determine motor operating current to determine the balanced degree of oil pumper using current sensor.Drive device is controlled by control device
Operating realize to walking beam auxiliary balance weight with swinging up and down for walking beam around walking beam fulcrum carry out front and back position change,
It can not only play a part of improving counterbalance effect, moreover it is possible to play further reduction motor net moment of torsion, and then reduce power of motor
Effect, while being also avoided that the situation of negative value occurs in Motor torque (or power), improves the running status of motor.It is airborne when pumping
When lotus deviates poised state, control system is according to the parameter detected, by changing the side that walking beam auxiliary balance is moved forward and backward again
Improve counterbalance effect to, displacement, realize the dynamic equilibrium of oil pumper.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
Between the difference of other embodiment, each embodiment identical similar part mutually referring to.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all 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, it is characterised in that comprise the following steps：
Balanced degree to oil pumper judges, the balanced degree at least includes poised state, under-balanced state and excessively flat
Weighing apparatus state；
When balanced degree is poised state, upstroke stage control walking beam auxiliary balance weight is in beam travelling tail end in oil pumper
It is at the first preset distance to move to away from walking beam fulcrum；When after net torque curve is begun to decline to the first set angle, control
Walking beam auxiliary balance weight is at the second preset distance extremely away from walking beam fulcrum to walking beam nose motion；Control walking beam auxiliary balance weight to
Walking beam fulcrum direction, which is moved to, to be at the 3rd preset distance away from walking beam fulcrum and makes walking beam auxiliary balance again on the walking beam forearm；
Before oil pumper down stroke terminates, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum；
When balanced degree is under-balanced state, upstroke stage control walking beam auxiliary balance weight is in walking beam tail in oil pumper
End motion is that at the 4th preset distance, the 4th preset distance is more than the first preset distance extremely away from walking beam fulcrum；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, control walking beam auxiliary balance weight to
Walking beam nose motion is that at the 5th preset distance, the 5th preset distance is less than the second preset distance extremely away from walking beam fulcrum；Control trip
It is at the 6th preset distance that beam auxiliary balance weight is moved to away from walking beam fulcrum to walking beam fulcrum direction；When oil pumper down stroke terminates
Before, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum；
When balanced degree is overbalance state, upstroke stage control walking beam auxiliary balance weight is in walking beam tail in oil pumper
End motion is at the 7th preset distance extremely away from walking beam fulcrum；When after net torque curve is begun to decline to three set angles, the
Three set angles are less than the first set angle, and it is the 8th extremely away from walking beam fulcrum to walking beam nose motion to control walking beam auxiliary balance weight
At preset distance, the 8th preset distance is more than the second preset distance；Control walking beam auxiliary balance weight is moved to walking beam fulcrum direction
To away from walking beam fulcrum be the 9th preset distance at, the 9th preset distance be more than the 3rd preset distance；When oil pumper down stroke terminates
Before, control walking beam auxiliary balance, which is returned to, to be returned at walking beam fulcrum.
2. the control method of walking beam on pumping units auxiliary balance according to claim 1 weight, it is characterised in that poised state is
Peak value of the net torque curve of oil pumper in up-down stroke meets preparatory condition.
3. the control method of walking beam on pumping units auxiliary balance weight according to claim 1, 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 weight according to claim 1, 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, it is characterised in that when 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 weight according to claim 1, 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 more than the 3rd preset distance.
7. the control method of walking beam on pumping units auxiliary balance weight according to claim 1, it is characterised in that when walking beam auxiliary
When balance weight is located on walking beam postbrachium, the 7th preset distance is less than first preset distance.
8. the control method of walking beam on pumping units auxiliary balance weight according to claim 1, 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 more than the first preset distance.
9. the control method of walking beam on pumping units auxiliary balance weight according to claim 1, it is characterised in that taken out by measurement
The upper and lower stroke of oil machine motor does work size to determine the balanced degree of oil pumper.
10. the control method of walking beam on pumping units auxiliary balance weight according to claim 9, it is characterised in that when on motor
When stroke acting is more than down stroke acting, oil pumper is under-balanced state, when the acting of motor upstroke is less than down stroke acting,
Oil pumper is overbalance state.
11. the control method of walking beam on pumping units auxiliary balance weight according to claim 1, it is characterised in that pass through electric current
Sensor measures the size of current of the upper and lower stroke of pumping-unit motor to determine the balanced degree of oil pumper.
12. the control method of walking beam on pumping units auxiliary balance weight according to claim 11, it is characterised in that work as upstroke
Current of electric be more than down stroke current of electric when, oil pumper is under-balanced state, under the current of electric of upstroke is less than
During the current of electric of stroke, oil pumper is overbalance state.
13. the control method of walking beam on pumping units auxiliary balance weight according to claim 1, it is characterised in that the oil pumping
Machine includes：
Walking beam；
The walking beam auxiliary balance being arranged on the walking beam resets regulating device, and walking beam auxiliary balance, which resets regulating device, to be included：Balance
Driven sprocket is provided with frame, balance frame；It is arranged on the walking beam auxiliary balance weight on balance frame；It is arranged on balance frame
On drive device, drive device include drive sprocket, chain, chain and walking beam are provided between drive sprocket and driven sprocket
Auxiliary balance heavy phase is connected, during so that drive device driving drive sprocket and driven sprocket rotation, drive sprocket and driven sprocket
Between chain walking beam auxiliary balance can be driven to move again；
The acceleration transducer on the walking beam is arranged on, it is used to detect that walking beam is in upstroke or down stroke；
Motor for driving the walking beam motion；
Current sensor for determining the motor operating current；
Control device, the data that it is monitored according to the acceleration transducer and the current sensor are to beam pumping unit
The drive device that walking beam auxiliary balance is resetted in regulating device is controlled such that walking beam auxiliary balance is moved 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 | The control method of walking beam on pumping units auxiliary balance weight |
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| CN201610890926.1A CN106368936B (en) | 2016-10-12 | 2016-10-12 | The control method of walking beam on pumping units auxiliary balance weight |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 control device and method for walking-beam type 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6857474B2 (en) * | 2001-10-02 | 2005-02-22 | Lufkin Industries, Inc. | Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
| US7207395B2 (en) * | 2004-01-30 | 2007-04-24 | Cdx Gas, Llc | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement |
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2016
- 2016-10-12 CN CN201610890926.1A patent/CN106368936B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 control device and method for walking-beam type 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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