CN104612631A - Power balance digitization automatic control oil pumping method and oil extraction robot - Google Patents
Power balance digitization automatic control oil pumping method and oil extraction robot Download PDFInfo
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- CN104612631A CN104612631A CN201410852567.1A CN201410852567A CN104612631A CN 104612631 A CN104612631 A CN 104612631A CN 201410852567 A CN201410852567 A CN 201410852567A CN 104612631 A CN104612631 A CN 104612631A
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- 238000000034 method Methods 0.000 title claims abstract description 80
- 238000005086 pumping Methods 0.000 title claims abstract description 55
- 238000000605 extraction Methods 0.000 title abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 40
- 239000000725 suspension Substances 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 23
- 241001023788 Cyttus traversi Species 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims description 51
- 238000011084 recovery Methods 0.000 claims description 28
- 230000001939 inductive effect Effects 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 230000005611 electricity Effects 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 210000003371 toe Anatomy 0.000 claims description 4
- 230000001012 protector Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 18
- 239000003129 oil well Substances 0.000 description 15
- 241000208340 Araliaceae Species 0.000 description 10
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 10
- 235000003140 Panax quinquefolius Nutrition 0.000 description 10
- 235000008434 ginseng Nutrition 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000205 computational method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010205 computational analysis Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- 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
-
- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to the technical field of beam-pimping units, in particular to a power balance digitization automatic control oil pumping method and an oil extraction robot. The oil extraction robot comprises a main motor, a speed reducer, a crank, a connecting rod, a walking beam, a balance suspension arm, a support, a horse head, a base, a braking device, a beam hanger, a load sensor, a stroke process measurer, a safety limiting device and a digitization control cabinet. The oil extraction robot has the advantages of being safe and reliable. The balance and the jig frequency of a pumping unit are automatically optimized and adjusted, the well yield is fully developed, the efficiency of a well system of the pumping unit is improved, the seamless access of the well system to a computer network system is achieved, data remote transmission and remote well opening and closing control are achieved, operation is simplified, convenience and fastness are achieved, manpower is saved, energy conservation and emission reduction are achieved, and the economic benefits are increased.
Description
Technical field
the present invention relates to beam pumping unit technical field, is a kind of power-balance digital automatic control oil pumping method and oil recovery robot.
Background technology
existing beam pumping unit mainly contains: conventional type beam pumping unit, prefix type beam pumping unit, eccentrically arranged type beam pumping unit and Hetrotype travelling beam type oil extractor etc., current beam pumping unit generally comprises horse head, walking beam, support, connecting rod, base, crank, bascule, reducer, brake, motor and polished rod eye, base is installed with support, reducer, brake, motor and switch board etc., walking beam is hinged on support, crank is fixedly mounted on reducer output shaft, one end of connecting rod is hinged on crank, the other end of connecting rod is hinged on walking beam, material is thus formed quadric chain, horse head is arranged on the front end of walking beam, polished rod eye is arranged on horse head, bascule is arranged on crank, or/and bascule is arranged on walking beam, carrys out adjustment by manually adding and subtracting mass quality change trimming moment, or/and, change trimming moment by moved by hand mass position and carry out adjustment, but all there is the remarkable deficiency of two aspects in existing beam pumping unit: one is, can not automatic adjusting balance, and balance needs to adjust in time according to the change of oil well load, if balanced ratio is too low, oil pumper duty can be caused to worsen and power consumption increase, two are, automatically jig frequency can not be adjusted, cause the oil pumping ability of oil pumper often higher or lower than the oil production of oil well, if the too fast meeting of the jig frequency of oil pumper causes oil pumping ability higher than the oil production of oil well, sky is caused to take out and liquid hammer, damage oil pumper, sucker rod, oil well pump, reduce application life, and waste electric energy, oil pumping ability can be caused slowly lower than the oil production of oil well if the jig frequency of oil pumper is crossed, reduce oil well output.
Summary of the invention
the invention provides a kind of power-balance digital automatic control oil pumping method and oil recovery robot, overcome the deficiency of above-mentioned prior art, it effectively can solve existing beam pumping unit can not automatic adjusting balance and automatically can not adjust jig frequency, cause that balanced ratio is low, jig frequency is not mated with well oil output, cause oil pumper easily to break down, oil well is difficult to realize maximum production capacity and cost of production is high problem.
one of technical scheme of the present invention is realized by following measures: a kind of power-balance digital automatic control oil pumping method, comprise oil recovery robot, this oil recovery robot comprises mair motor, walking beam, balance arm, crank and polished rod eye, balance arm is installed with at the left end of walking beam, the drive unit that balance arm is separately installed with portable ballast box and portable ballast box can be made to move left and right, oil recovery robot is provided with stroke procedure measuring appliance, polished rod eye is installed with load transducer; Also comprise central processing unit and three phase electrical parameters harvester, this three phase electrical parameters harvester is arranged on energization input; The method is carried out in the steps below:
the first step, in each stroke procedure, central processing unit calculates the current value collected and magnitude of voltage, obtains the average power content P in down stroke
under
with the average power content P in upstroke
on
, and carry out size and compare, take higher value as denominator and P
greatly
, take smaller value as molecule and P
little
, then rated output balance angle value H2 and H2=P
little
/ P
greatly
;
second step, obtains N number of power-balance angle value H2 for N time by the number of strokes of setting, obtains power-balance degree average H2 to N number of power-balance angle value H2 after carrying out arithmetic average
on average
, then compare process, power-balance degree lower limit set value is A21, and power-balance degree regulates target lower limit set value to be A22;
when after N stroke, H2
on average
value meets A21≤H2
on average
for power-balance state, portable ballast box is not regulated;
when after N stroke, H2
on average
value is less than A21 and P
under
be less than P
on
time be power under-balanced state, now by drive unit, portable ballast box is moved to the left, makes power-balance degree average H2
on average
reach A22≤H2
on average
;
when after N stroke, H2
on average
value is less than A21 and P
under
be greater than P
on
time be power overbalance state, now by drive unit, portable ballast box is moved right, makes power-balance degree average H2
on average
reach A22≤H2
on average
.
here is the further optimization and/or improvements to one of foregoing invention technical scheme:
above-mentionedly respectively the data that stroke procedure measuring appliance, three phase electrical parameters harvester collect are transferred to central processing unit, central processing unit, in each stroke procedure, processes the current value collected, and finds out the maximum current value I in down stroke
lower max
with the maximum current value I in upstroke
upper max
, central processing unit calculates current balance type angle value H1 and the H1=I of each stroke procedure
lower max
/ I
upper max
;
obtain N number of current balance type angle value H1 for N time by setting number of strokes, after arithmetic average is carried out to N number of current balance type angle value H1, obtain current balance type degree average H1
on average
, then compare process, current balance type degree lower limit set value is A11, and current balance type degree regulates target lower limit set value to be A12, and current balance type degree upper limit set value is B11, and current balance type degree regulates target upper limit setting value to be B12;
when after N stroke, H1
on average
value meets A11≤H1
on average
≤ B11 is current balance type state, does not regulate portable ballast box;
when after N stroke, H1
on average
be electric current under-balanced state when being less than A11, now by drive unit, portable ballast box be moved to the left, make current balance type degree average H1
on average
reach A12≤H1
on average
≤ B12;
when after N stroke, H1
on average
be electric current overbalance state when being greater than B11, now by drive unit, portable ballast box moved right, make current balance type degree average H1
on average
reach A12≤H1
on average
≤ B12.
above-mentionedly between mair motor and energization input, frequency converter is installed, polished rod eye is installed with load transducer for gathering polished rod load value F, oil recovery robot is provided with stroke procedure measuring appliance for gathering suspension point shift value S; In each stroke procedure, central processing unit carries out analysis and calculation according to the polished rod load value F collected and suspension point shift value S and obtains surface dynamometer card, its ordinate is the coordinate of polished rod polished rod load value F in oil pumping process, abscissa is the coordinate of polished rod suspension point shift value S in oil pumping process, central processing unit gathers the effective stroke value S2 of upstroke throw of pump value S1 and down stroke pump according to surface dynamometer card, then calculates pump degree of filling H3 and H3=S2/S1;
obtain N number of pump for N time by the number of strokes of setting and be full of angle value H3, N number of pump is full of after angle value H3 carries out arithmetic average and obtains pump degree of filling average H3
on average
, then compare process, pump degree of filling lower limit set value is A31, and pump degree of filling regulates target lower limit set value to be A32, and pump degree of filling upper limit set value is B31;
when after N stroke, H3
on average
value meets A31≤H3
on average
≤ B31 is the appropriate state of jig frequency, does not carry out jig frequency adjustment;
when after N stroke, H3
on average
when being less than A31, be the too fast state of jig frequency, now reduce mair motor rotating speed by frequency converter and reduce jig frequency, making pump degree of filling average H3
on average
reach A32≤H3
on average
≤ B31;
when after N stroke, H3
on average
when being greater than B31, for jig frequency crosses slow state, now raise mair motor rotating speed by frequency converter and increase jig frequency, making pump degree of filling average H3
on average
reach A32≤H3
on average
≤ B31.
above-mentioned A11 value is 0.8 to 0.85, A12 value be 0.9 to 0.95, B11 value be 1.10 to 1.15, B12 values is 1.0 to 1.05; Or/and A21 value is 0.5 to 0.6, A22 value is 0.80 to 0.90; Or/and A31 value is 0.5 to 0.6, A32 value be 0.75 to 0.85, B31 value is 0.85 to 0.95.
the number of strokes N of above-mentioned setting is the number of times of setting; Or/and stroke procedure measuring appliance is be arranged on angular displacement sensor on walking beam or for being fixedly mounted on proximity switch on crank or for being arranged on the suspension point displacement detecting sensor on polished rod eye; Or/and three phase electrical parameters harvester is electrical quantity dynamic equilibrium tester or current transformer.
two of technical scheme of the present invention is realized by following measures: a kind of oil recovery robot, comprises mair motor, reducer, crank, connecting rod, walking beam, balance arm, support, horse head, base, brake gear, polished rod eye and stroke procedure measuring appliance, base is installed with mair motor, reducer, brake gear and support, the walking beam that can swing up and down is hinged on the top of support by the walking beam bearing at middle part, the power output shaft of reducer is provided with crank, lower end and the crank of connecting rod are hinged, the upper end thereof of connecting rod is at the left part of walking beam, the right-hand member of walking beam is installed with horse head, horse head is provided with polished rod eye, balance arm is installed with at the left end of walking beam, fixed weight case is installed with at the left part of balance arm, the drive unit that balance arm is separately installed with portable ballast box and portable ballast box can be made to move left and right.
here is the further optimization and/or improvements to foregoing invention technical scheme two:
above-mentioned drive unit comprises the reducer of band balance motor, leading screw and screw, reducer with balance motor is fixedly mounted on balance arm, lead screw shaft bearing is installed with in one end of balance arm, leading screw asessory shaft bearing is installed with at the other end of balance arm, the two ends of leading screw are arranged in lead screw shaft bearing and leading screw asessory shaft bearing respectively, one end of leading screw is fixedly installed togather by the clutch end of shaft coupling with the reducer of band balance motor, leading screw is provided with screw, portable ballast box is saddle, groove is had in the middle part of it, leading screw passes in the groove of portable ballast box, portable ballast box is installed with four fixed blocks, cross recess is formed between four fixed blocks, screw is arranged in cross recess and also can floats up and down, the cover plate that can block screw is installed with in the outer end of fixed block, balance arm is provided with slide rail, in the inner side of portable ballast box, roller is installed, roller is positioned on slide rail, or/and be provided with safety caging device on balance arm and portable ballast box, this safety caging device comprises tablet, down stroke inductive switch and up stroke inductive switch, or/and stroke procedure measuring appliance is be arranged on angular displacement sensor on walking beam or for being fixedly mounted on proximity switch on crank or for being arranged on the suspension point displacement detecting sensor on polished rod eye, portable ballast box comprises movable case and movable weight, there is dividing plate at movable case internal fixtion and movable case be divided into fixed weight chamber and moving counterweight chamber, fixed weight thing is filled with in fixed weight chamber, in moving counterweight chamber, movable weight is installed, movable case is installed with the insurance pin that can block movable weight, or/and, fixed weight case comprises fixed case and movable weight, there is dividing plate at fixed case internal fixtion and fixed case be divided into fixed weight chamber and moving counterweight chamber, fixed weight thing is filled with in fixed weight chamber, in moving counterweight chamber, movable weight is installed, fixed case is installed with the insurance pin that can block movable weight.
above-mentioned polished rod eye comprises polished rod eye body, load transducer and outstanding rope; Polished rod eye body is provided with load transducer.
above-mentionedly on base, be installed with Digital Control cabinet, at Digital Control cabinet internal fixtion, central processing unit, communication module, power module, display module, electricity quantity module, three phase electrical parameters harvester, control panel, on off control relay, frequency converter, mair motor frequency-changing AC contactor, mair motor industrial frequency AC contactor, comprehensive protector of motor, balancing control relay, balance motor A.C. contactor and current transducer be installed; the signal output part of load transducer is electrically connected by the first signal input part of load transducer cable and lower stube cable and central processing unit, the signal output part of stroke procedure measuring appliance is electrically connected by the secondary signal input of movable cable and lower stube cable and central processing unit, the power input line of the reducer of band balance motor is provided with current transducer, the signal output part of current transducer and the 3rd signal input part of central processing unit are electrically connected by wire, the signal output part of down stroke inductive switch and up stroke inductive switch is by upper stube cable, 4th signal input part of movable cable and lower stube cable and central processing unit is electrically connected, the signal output part of down stroke inductive switch and up stroke inductive switch is by upper stube cable, the signal input part of movable cable and lower stube cable and balancing control relay is electrically connected, first signal output part of central processing unit and the signal input part of balancing control relay are electrically connected by wire, the signal output part of balancing control relay and the signal input part of balance motor AC contactor are electrically connected by wire, the output of balance motor A.C. contactor and the input of balance motor are electrically connected by wire, the output of balance motor A.C. contactor and the signal input part of current transducer are electrically connected by wire, the secondary signal output of central processing unit and the signal input part of on off control relay are electrically connected by wire, the signal output part of on off control relay and the signal input part of mair motor industrial frequency AC contactor are electrically connected by wire, the output of mair motor industrial frequency AC contactor and the input of mair motor are electrically connected by wire, the signal output part of on off control relay and the signal input part of mair motor frequency-changing AC contactor are electrically connected by wire, the output of mair motor frequency-changing AC contactor and the input of mair motor are electrically connected by wire.
the left end of the above-mentioned reducer power output shaft at band balance motor is fixed with square head or six square toes, and fixed weight case is installed with crank supporting seat; Or/and, base is provided with belt pulley fast replacing device, and the lower end of belt pulley fast replacing device is hinged on base, and the upper surface of belt pulley fast replacing device is installed with mair motor, support is hinged with support bar, walking beam has the corresponding free bearing connecting support bar; Or/and, be installed with buffer at the left part of base; Or/and three phase electrical parameters harvester is electrical quantity dynamic equilibrium tester or current transformer.
reasonable and compact in structure of the present invention, easy to use, by mair motor, reducer, connecting rod, walking beam, support, horse head, polished rod eye, load transducer, angular displacement sensor, safety caging device and Digital Control cabinet with the use of, arm is upper left moves right in balance not only to make portable ballast box, polished rod load under the various operating mode of autobalance, and automatically regulate beam-pumping unit jig frequency according to the change of pump degree of filling, there is safe and reliable feature, facilitate operation, give full play to oil well output, improve balanced ratio, achieve energy-saving and cost-reducing.
Accompanying drawing explanation
accompanying drawing 1 is the main TV structure schematic diagram of the embodiment of the present invention 2.
accompanying drawing 2 is that the master balancing arm in the embodiment of the present invention 2 looks structure for amplifying schematic diagram.
accompanying drawing 3 is that the A of portable ballast box in the embodiment of the present invention 2 is to structure for amplifying schematic diagram.
accompanying drawing 4 is that in the embodiment of the present invention 2, portable ballast box does not install the A of cover plate to structure for amplifying schematic diagram.
accompanying drawing 5 is the control circui schematic diagram of the embodiment of the present invention 2.
accompanying drawing 6 is the indicator card under the too fast state of jig frequency of the present invention.
accompanying drawing 7 is the indicator card under the appropriate state of jig frequency of the present invention.
accompanying drawing 8 crosses the indicator card under slow state for jig frequency of the present invention.
accompanying drawing 9 is the electricity ginseng curve of power under-balanced state of the present invention and electric current under-balanced state.
accompanying drawing 10 is the electricity ginseng curve of power-balance state of the present invention and current balance type state.
accompanying drawing 11 is the electricity ginseng curve of power overbalance state of the present invention and electric current overbalance state.
coding in accompanying drawing is respectively: 1 is polished rod eye, 2 is horse head, 3 is walking beam, 4 is walking beam bearing, 5 is support, 6 is connecting rod, 7 is balance arm, 8 is reducer, 9 is crank, 10 is hand crank, 11 is buffer, 12 is base, 13 is brake gear, 14 is Digital Control cabinet, 15 is mair motor, 16 is angular displacement sensor, 17 is load transducer, 18 is load transducer cable, 19 is movable cable, 20 is upper stube cable, 21 is lower stube cable, 22 is square head, 23 for being with the reducer of balance motor, 24 is shaft coupling, 25 is lead screw shaft bearing, 26 is leading screw, 27 is slide rail, 28 is portable ballast box, 29 is screw, 30 is fixed block, 31 is cover plate, 32 is fastening bolt, 33 is leading screw asessory shaft bearing, 34 is up stroke inductive switch, 35 is tablet, 36 is movable weight, 37 is insurance pin, 38 is down stroke inductive switch, 39 is movable case buffer stopper, 40 is block, 41 is roller, 42 is fixed weight thing, 43 is crank supporting seat, 44 is fixed weight case.
Detailed description of the invention
the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
in the present invention, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. determines according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
embodiment 1, as shown in accompanying drawing 9,10,11, this power-balance digital automatic control oil pumping method, comprise oil recovery robot, this oil recovery robot comprises mair motor 15, walking beam 3, balance arm 7, crank 9 and polished rod eye 1, balance arm 7 is installed with at the left end of walking beam 3, drive unit balance arm 7 being separately installed with portable ballast box 28 and portable ballast box 28 can be made to move left and right, oil recovery robot is provided with stroke procedure measuring appliance, polished rod eye 1 is installed with load transducer 17; Also comprise central processing unit and three phase electrical parameters harvester, this three phase electrical parameters harvester is arranged on energization input; The method is carried out in the steps below:
the first step, in each stroke procedure, central processing unit calculates the current value collected and magnitude of voltage, obtains the average power content P in down stroke
under
with the average power content P in upstroke
on
, and carry out size and compare, take higher value as denominator and P
greatly
, take smaller value as molecule and P
little
, then rated output balance angle value H2 and H2=P
little
/ P
greatly
;
second step, obtains N number of power-balance angle value H2 for N time by the number of strokes of setting, obtains power-balance degree average H2 to N number of power-balance angle value H2 after carrying out arithmetic average
on average
, then compare process, power-balance degree lower limit set value is A21, and power-balance degree regulates target lower limit set value to be A22;
when after N stroke, H2
on average
value meets A21≤H2
on average
for power-balance state, portable ballast box is not regulated;
when after N stroke, H2
on average
value is less than A21 and P
under
be less than P
on
time be power under-balanced state, now by drive unit, portable ballast box is moved to the left, makes power-balance degree average H2
on average
reach A22≤H2
on average
;
when after N stroke, H2
on average
value is less than A21 and P
under
be greater than P
on
time be power overbalance state, now by drive unit, portable ballast box is moved right, makes power-balance degree average H2
on average
reach A22≤H2
on average
.
by three phase electrical parameters harvester, the electric current in stroke procedure and voltage are gathered, three kinds of state diagrams can be obtained respectively after collection, be respectively the electricity ginseng curve of power under-balanced state and electric current under-balanced state as shown in Figure 9, the electricity ginseng curve of power-balance state and current balance type state as shown in Figure 10 with the electricity ginseng curve of power overbalance state and electric current overbalance state as shown in Figure 11.
according to actual needs, above-described embodiment 1 can be made further optimization and/or improvements:
as shown in accompanying drawing 9,10,11, respectively the data that stroke procedure measuring appliance, three phase electrical parameters harvester collect are being transferred to central processing unit, central processing unit, in each stroke procedure, processes the current value collected, and finds out the maximum current value I in down stroke
lower max
with the maximum current value I in upstroke
upper max
, central processing unit calculates current balance type angle value H1 and the H1=I of each stroke procedure
lower max
/ I
upper max
;
obtain N number of current balance type angle value H1 for N time by setting number of strokes, after arithmetic average is carried out to N number of current balance type angle value H1, obtain current balance type degree average H1
on average
, then compare process, current balance type degree lower limit set value is A11, and current balance type degree regulates target lower limit set value to be A12, and current balance type degree upper limit set value is B11, and current balance type degree regulates target upper limit setting value to be B12;
when after N stroke, H1
on average
value meets A11≤H1
on average
≤ B11 is current balance type state, does not regulate portable ballast box;
when after N stroke, H1
on average
be electric current under-balanced state when being less than A11, now by drive unit, portable ballast box be moved to the left, make current balance type degree average H1
on average
reach A12≤H1
on average
≤ B12;
when after N stroke, H1
on average
be electric current overbalance state when being greater than B11, now by drive unit, portable ballast box moved right, make current balance type degree average H1
on average
reach A12≤H1
on average
≤ B12.
by three phase electrical parameters harvester, the electric current in stroke procedure and voltage are gathered, three kinds of state diagrams can be obtained respectively after collection, be respectively the electricity ginseng curve of power under-balanced state and electric current under-balanced state as shown in Figure 9, the electricity ginseng curve of power-balance state and current balance type state as shown in Figure 10, the electricity ginseng curve of power overbalance state and electric current overbalance state as shown in Figure 11.
as shown in accompanying drawing 6,7,8, between mair motor 15 and energization input, frequency converter is installed, polished rod eye 1 being installed with load transducer 17 for gathering polished rod load value F, oil recovery robot being provided with stroke procedure measuring appliance for gathering suspension point shift value S; In each stroke procedure, central processing unit carries out analysis and calculation according to the polished rod load value F collected and suspension point shift value S and obtains surface dynamometer card, its ordinate is the coordinate of polished rod polished rod load value F in oil pumping process, abscissa is the coordinate of polished rod suspension point shift value S in oil pumping process, central processing unit gathers the effective stroke value S2 of upstroke throw of pump value S1 and down stroke pump according to surface dynamometer card, then calculates pump degree of filling H3 and H3=S2/S1;
obtain N number of pump for N time by the number of strokes of setting and be full of angle value H3, N number of pump is full of after angle value H3 carries out arithmetic average and obtains pump degree of filling average H3
on average
, then compare process, pump degree of filling lower limit set value is A31, and pump degree of filling regulates target lower limit set value to be A32, and pump degree of filling upper limit set value is B31;
when after N stroke, H3
on average
value meets A31≤H3
on average
≤ B31 is the appropriate state of jig frequency, does not carry out jig frequency adjustment;
when after N stroke, H3
on average
when being less than A31, be the too fast state of jig frequency, now reduce mair motor rotating speed by frequency converter and reduce jig frequency, making pump degree of filling average H3
on average
reach A32≤H3
on average
≤ B31;
when after N stroke, H3
on average
when being greater than B31, for jig frequency crosses slow state, now raise mair motor rotating speed by frequency converter and increase jig frequency, making pump degree of filling average H3
on average
reach A32≤H3
on average
≤ B31.
by stroke procedure measuring appliance, the suspension point displacement in stroke procedure is gathered, by load transducer, the polished rod load in stroke procedure is gathered, through central processing unit, the above-mentioned data collected are processed, obtain three kinds of state diagrams, be respectively indicator card under the too fast state of the jig frequency indicator card as shown in Figure 6, under the appropriate state of jig frequency as shown in Figure 7, jig frequency crosses indicator card under slow state as shown in Figure 8.
as required, A11 value is 0.8 to 0.85, A12 value be 0.9 to 0.95, B11 value be 1.10 to 1.15, B12 values is 1.0 to 1.05; Or/and A21 value is 0.5 to 0.6, A22 value is 0.80 to 0.90; Or/and A31 value is 0.5 to 0.6, A32 value be 0.75 to 0.85, B31 value is 0.85 to 0.95.
p
on
for the average power content in upstroke, P
under
for the average power content in down stroke, I
upper max
for upstroke mair motor 15 maximum current value, I
lower max
for down stroke mair motor 15 maximum current value, electrical quantity dynamic equilibrium tester transfers data to central processing unit and obtains power-balance degree H2, current balance type degree H1.
as required, the oil pumper number of strokes N in the present invention is the number of times of setting; Or/and stroke procedure measuring appliance is be arranged on angular displacement sensor 16 on walking beam 3 or for being fixedly mounted on proximity switch on crank 9 or for being arranged on the suspension point displacement detecting sensor on polished rod eye 1; Or/and three phase electrical parameters harvester is electrical quantity dynamic equilibrium tester or current transformer.
the computation and analysis of pump degree of filling H3 needs the effective stroke value S2 using upstroke throw of pump value S1 and down stroke pump, the exact value of S1 and S2 should obtain from pump dynamometers, pump is arranged on oil pipe lower end, often apart from the even thousands of rice of ground degree of depth hundreds of in production practices, be difficult to the indicator card directly obtaining pump, therefore usually use ground merit figure to obtain approximate S1 value and S2 value.Surface dynamometer card is the closed curve that a pumping cycle, (comprising a complete upstroke and down stroke), interior suspension point displacement S and corresponding polished rod load F was formed, and abscissa is suspension point displacement S, and ordinate is polished rod load F.The suspension point displacement S that stroke procedure measuring appliance and load transducer will directly record respectively, the modular converter of analog electrical energy in central processing unit of polished rod load F is converted to digital electricity, the digital electricity that central processing unit gathers suspension point displacement S and corresponding polished rod load F by constant duration simultaneously forms a series of point data, software logic identifies all point data of S and F in a complete pumping cycle simultaneously, get surface dynamometer card through graphics software process, as accompanying drawing 6, 7, shown in 8, the approximation of pump effective stroke S2 in the approximation of pump stroke S1 in upstroke process and down stroke process can be calculated by the scanning search of indicator card data point.
can calculate system efficiency of pumping well by central processing unit or upper station control computer by the present invention, system efficiency of pumping well can calculate by following two kinds of methods:
system efficiency of pumping well computational methods one
system efficiency of pumping well η
system
refer to ratio down-hole liquid being given rise to effective work done on ground and the input energy of pumping well system.The i.e. effective power P of rod-pumped well
e
with input power P
i
ratio:
η
system
=(P
e
/ P
i
) × 100% formula (1)
in formula (1):
η
system
for system effectiveness, %; / be the division sign; P
i
for the input power of rod-pumped well, refer to the input power that motor of oil extractor is total, can be calculated by central processing unit or frequency converter metering obtains, kW; P
e
for the effective power of rod-pumped well, refer to the power given rise to by down-hole fluid required for ground, kW.
the effective power P of rod-pumped well
e
calculate as follows:
p
e
=(Q
actual
× H × ρ × g)/86400 formulas (2)
in formula (2):
p
e
for the effective power of rod-pumped well, kW; Q
actual
for oil well actual daily output fluid amount, can be obtained by single well metering device metering or oil recovery factory's production leadtime data provide, m
3
/ d; H is effective head, can by well fluid level echo measurement device and calculating obtain, m; ρ is well liquid bulk density, can be detected and provide, t/m by oil recovery factory's oil product
3
; G is acceleration of gravity, g=9.8m/s
2
; / be the division sign.
wherein, effective head H calculates as follows:
h=H
d
+ ((P
o
-P
t
) × 1000)/(ρ × g) formula (3)
in formula (3):
h
d
for fluid level depth of oil well, can by well fluid level echo measurement device, m; P
o
for well head oil pressure, can be measured by numerical pressure table or oil recovery factory's creation data provides, Mpa; P
t
for surface casing pressure, can be measured by numerical pressure table or oil recovery factory's creation data provides, Mpa; / be the division sign.
system efficiency of pumping well computational methods two:
system efficiency of pumping well η
system
can by the surface efficiency η of oil pumper
ground
with Downhole efficiency η
down-hole
product obtain.
η
system
=(η
ground
× η
down-hole
) × 100% formula (4)
in formula (4):
η
ground
for surface efficiency, %; η
down-hole
for Downhole efficiency, %;
wherein, surface efficiency:
η
ground
=(P
polished rod
/ P
i
) × 100% formula (5)
downhole efficiency:
η
down-hole
=(P
e
/ P
polished rod
) × 100% formula (6)
in formula (5): P
polished rod
for polished rod horsepower, kW;
wherein, polished rod horsepower:
p
polished rod
=S
merit
× n/60 formula (7)
in formula (7): S
merit
for surface dynamometer card area, kN ﹒ m; N is beam-pumping unit jig frequency, n/min.
rod-pumped well pump efficiency η can be calculated by central processing unit or upper station control computer by the present invention
pump efficiency
, pump efficiency is the actual Liquid output Q of rod-pumped well
actual
with the theoretical lifting rate Q of pump
theoretical
ratio.
η
pump efficiency
=(Q
actual
/ Q
theoretical
) × 100% formula (8)
in formula (8): η
pump efficiency
for pump efficiency, %; / be the division sign; Q
actual
for the actual daily fluid production rate of oil well, can be obtained by single well metering device metering or oil recovery factory's production leadtime data provide, m
3
/ d; Q
theoretical
for the theoretical lifting rate of pump, m
3
/ d; .
wherein: Q
theoretical
=1.1304 × 10
-3
× S × n × D
2
formula (9)
in formula (9): S is oil pumper stroke, m; N is jig frequency, n/min; D is pump footpath, mm.
during pumping unit system work, be the process that an energy constantly transmits and transforms, and each transmission of energy have certain loss; System efficiency of pumping well weighs the leading indicator of oil well energy consumption and working condition, and the system efficiency of pumping well in each oil field of China is general lower, and only have about 20%, production management level and the cost benefit in oil field need raising badly.Take effective conservation measures, improve system efficiency of pumping well, a ton liquid power consumption can be reduced, input-output ratio is increased, extending the application life of machine, bar, pump simultaneously, obtain higher economic benefit, is that oil extraction in oil field produces one of core objective pursued all the time.
pump efficiency is the ratio of the actual Liquid output of rod-pumped well and the theoretical lifting rate of pump, improves crude output increase in unit interval when pump efficiency means that well deliverability is sufficient, effectively can improve system efficiency of pumping well simultaneously, reduce energy consumption.
embodiment 2, as shown in accompanying drawing 1,2,3,4, this oil recovery robot comprises mair motor 15, reducer 8, crank 9, connecting rod 6, walking beam 3, balance arm 7, support 5, horse head 2, base 12, brake gear 13, polished rod eye 1 and stroke procedure measuring appliance, base 12 is installed with mair motor 15, reducer 8, brake gear 13 and support 5, the walking beam 3 that can swing up and down is hinged on the top of support 5 by the walking beam bearing 4 at middle part, the power output shaft of reducer 8 is provided with crank 9, lower end and the crank 9 of connecting rod 6 are hinged, the upper end thereof of connecting rod 6 is at the left part of walking beam 3, the right-hand member of walking beam 3 is installed with horse head 2, horse head 2 is provided with polished rod eye 1, balance arm 7 is installed with at the left end of walking beam 3, fixed weight case 44 is installed with at the left part of balance arm 7, drive unit balance arm 7 being separately installed with portable ballast box 28 and portable ballast box 28 can be made to move left and right.
according to actual needs, above-described embodiment 2 can be made further optimization and/or improvements:
as accompanying drawing 1, 2, 3, shown in 4, drive unit comprises the reducer 23 of band balance motor, leading screw 26 and screw 29, reducer 23 with balance motor is fixedly mounted on balance arm 7, lead screw shaft bearing 25 is installed with in one end of balance arm 7, leading screw asessory shaft bearing 33 is installed with at the other end of balance arm 7, the two ends of leading screw 26 are arranged in lead screw shaft bearing 25 and leading screw asessory shaft bearing 33 respectively, one end of leading screw 26 is fixedly installed togather by the clutch end of shaft coupling 24 with the reducer 23 of band balance motor, leading screw 26 is provided with screw 29, portable ballast box 28 is in saddle, groove is had in the middle part of it, leading screw 26 passes in the groove of portable ballast box 28, portable ballast box 28 is installed with four fixed blocks 30, cross recess is formed between four fixed blocks 30, screw 29 is arranged in cross recess and also can floats up and down, the cover plate 31 that can block screw is installed with in the outer end of fixed block 30, balance arm 7 is provided with slide rail 27, in the inner side of portable ballast box 28, roller 41 is installed, roller 41 is positioned on slide rail 27, or/and be provided with safety caging device on balance arm 7 and portable ballast box 28, this safety caging device comprises tablet 35, down stroke inductive switch 38 and up stroke inductive switch 34, or/and stroke procedure measuring appliance is be arranged on angular displacement sensor 16 on walking beam 3 or for being fixedly mounted on proximity switch on crank 9 or for being arranged on the suspension point displacement detecting sensor on polished rod eye 1, or/and portable ballast box 28 comprises movable case and movable weight 36, there is dividing plate at movable case internal fixtion and movable case be divided into fixed weight chamber and moving counterweight chamber, fixed weight thing 42 is filled with in fixed weight chamber, movable weight 36 is installed in moving counterweight chamber, movable case is installed with the insurance pin 37 that can block movable weight 36, or/and, fixed weight case 44 comprises fixed case and movable weight 36, there is dividing plate at fixed case internal fixtion and fixed case be divided into fixed weight chamber and moving counterweight chamber, fixed weight thing 42 is filled with in fixed weight chamber, movable weight 36 is installed in moving counterweight chamber, fixed case is installed with the insurance pin 37 that can block movable weight 36.Be installed with movable case buffer stopper 39 on the right-hand member top of fixed weight case, be installed with block 40 in the right-hand member bottom of fixed weight case.Like this, by being with reducer 23 forward or reverse of balance motor, shaft coupling 24 drives leading screw 26 to rotate, and screw 29 drives portable ballast box 28 to move left and right on balance arm 7, thus balances the change of polished rod load in pumping process.In the inner side of portable ballast box 28, four rolling 41 is installed, better plays support and guide effect.When portable ballast box 28 moves to the two ends of balance arm 7, when tablet 35 on ballast box is close to up stroke inductive switch 34 or down stroke inductive switch 38, down stroke inductive switch or up stroke inductive switch send spacing stop signal, shut down by the reducer 23 of central processing unit, balancing control relay, balance motor A.C. contactor control cincture balance motor, portable ballast box 28 is stopped mobile; Up stroke inductive switch 34 and down stroke inductive switch 38 cooperatively interact, for the position limitation protection of portable ballast box about 28 stroke with tablet 35; Crank 9 being provided with three crank pin holes, using for adjusting stroke.Be installed with the cover plate 31 that can block screw 29 by fastening bolt 32 in the outer end of fixed block 30.Fixed weight thing 42 can adopt the existing known materials such as composite material coagulum, and the basis meeting counterweight is played the effect reducing manufacturing cost.Insurance pin 37 plays the effect of protection movable weight 36, prevents movable weight 36 in running from dropping; By adjusting the quantity coarse balance of the movable weight 36 in the moving counterweight chamber of movable case and fixed case, fine adjustment balance is carried out by the position changing portable ballast box 28, combined by both positions of the quantity and the portable ballast box 28 of change that adjust movable weight 36, make oil recovery robot not only easily reach balance but also balance can be kept.
as shown in Figure 1, polished rod eye 1 comprises polished rod eye body, load transducer 17 and outstanding rope; Polished rod eye body is provided with load transducer 17.
as shown in accompanying drawing 1,5, base 12 is installed with Digital Control cabinet 14, at Digital Control cabinet 14 internal fixtion, central processing unit, communication module, power module, display module, electricity quantity module, three phase electrical parameters harvester, control panel, on off control relay, frequency converter, mair motor frequency-changing AC contactor, mair motor industrial frequency AC contactor, comprehensive protector of motor, balancing control relay, balance motor A.C. contactor and current transducer is installed; the signal output part of load transducer 17 is electrically connected with the first signal input part of central processing unit by load transducer cable 18 and lower stube cable 21, the signal output part of stroke procedure measuring appliance is electrically connected with the secondary signal input of central processing unit by movable cable 19 and lower stube cable 21, the power input line of the reducer 23 of band balance motor is provided with current transducer, the signal output part of current transducer and the 3rd signal input part of central processing unit are electrically connected by wire, the signal output part of down stroke inductive switch and up stroke inductive switch is by upper stube cable 20, movable cable 19 and lower stube cable 21 are electrically connected with the 4th signal input part of central processing unit, the signal output part of down stroke inductive switch and up stroke inductive switch is by upper stube cable 20, movable cable 19 and lower stube cable 21 are electrically connected with the signal input part of balancing control relay, first signal output part of central processing unit and the signal input part of balancing control relay are electrically connected by wire, the signal output part of balancing control relay and the signal input part of balance motor AC contactor are electrically connected by wire, the output of balance motor A.C. contactor and the input of balance motor are electrically connected by wire, the output of balance motor A.C. contactor and the signal input part of current transducer are electrically connected by wire, the secondary signal output of central processing unit and the signal input part of on off control relay are electrically connected by wire, the signal output part of on off control relay and the signal input part of mair motor industrial frequency AC contactor are electrically connected by wire, the output of mair motor industrial frequency AC contactor and the input of mair motor 15 are electrically connected by wire, the signal output part of on off control relay and the signal input part of mair motor frequency-changing AC contactor are electrically connected by wire, the output of mair motor frequency-changing AC contactor and the input of mair motor 15 are electrically connected by wire.
as required, be fixed with square head 22 or six square toes at the left end of reducer 23 power output shaft of band balance motor, fixed weight case 44 is installed with crank supporting seat 43; Or/and, base 12 is provided with belt pulley fast replacing device, and the lower end of belt pulley fast replacing device is hinged on base 12, the upper surface of belt pulley fast replacing device is installed with mair motor 15, support 5 is hinged with support bar, walking beam 3 has the corresponding free bearing connecting support bar; Or/and, be installed with buffer 11 at the left part of base 12; Or/and three phase electrical parameters harvester is electrical quantity dynamic equilibrium tester or current transformer.Like this, have a power failure or band balance motor reducer 23 damage or electricity cable damage hand balancing or maintenance activity time, available hand crank 10 or spanner manual rotation square head 22 or six square toes, the reducer 23 of band balance motor is rotated forward or backwards, by leading screw 26, portable ballast box 28 is moved left and right on balance arm 7.Buffer 11 be convenient to generation suspension point of the present invention lose carry after, balance arm 7 left end impact attenuation device 11 discharge impact energy, the parts such as available protecting reducer 8 and mair motor 15.Load transducer 17, the reducer 23 of angular displacement sensor 16 and band balance motor is by load transducer cable 18, movable cable 19, upper stube cable 20 is linked together by the joint that can be connected fast with Digital Control cabinet 14 with lower stube cable 21, movable cable 19 particularly between walking beam 3 and support 5, upper stube cable 20 is linked together by the joint that can be connected fast with lower stube cable 21, and the joint that movable cable 19 is connected with lower stube cable 21 upward, reduce the bending damage of butt joint, extend movable cable application life, and be convenient to change.
beneficial effect of the present invention:
1) present invention employs portable automatic adjusting balance structure; by adjusting the quantity coarse balance of the movable weight 36 in the moving counterweight chamber of movable case and fixed case; by changing the position fine adjustment balance of portable ballast box 28; the two combines; balanced adjustment under making oil pumper more easily realize various operating mode needed for different polished rod load; can improve balanced ratio in production practices, protection oil pumper also reduces cost of production.
2) portable ballast box 28 is moved by hand crank 10, even if the reducer 23 of band balance motor damages, reducer 23 power supply circuits with balance motor damage, communicating interrupt, still can artificial hand balancing, oil pumper is made to continue to use, without potential safety hazard, also can not cause and stop well and affect output.
3) buffer 11 is installed with at the left part of base 12; suspension point loses the left end impact attenuation device 11 carrying back balance arm 7 and discharges impact energy; the parts such as available protecting reducer and mair motor 15, solve beam-balanced pumping unit suspension point and lose a year rear safeguard protection difficult problem.
4) there are frequency conversion, power frequency two kinds of methods of operation, during frequency conversion fault, can power frequency operation be automatically switched to.
5) electric parameter such as real-time automatic measuring and calculating phase voltage, phase current, frequency, forward active energy, negative sense active energy; electricity ginseng Drawing of Curve and display can be realized; the current equilibrium state of oil pumper is calculated according to electrical power and current data; provide balanced adjustment scheme; and automatically carrying out balance adjustment, power-balance degree and current balance type degree being combined not only protects oil pumper but also achieve energy-conservation.
6) real-time automatic measuring polished rod load, displacement, the real-time display of the information such as indicator card drafting and stroke, jig frequency, maximum polished rod load, minimum polished rod load, polished rod horsepower can be realized, according to the automatic adjusting stroke frequency of degree of filling of pump, degree of filling and the pump efficiency of pump can be improved, and analyze well deliverability, take out scheme between qualified well is proposed, and take out control between being undertaken by imposing a condition automatically, extend the well workover cycle further.
7) oil well pressure is gathered, temperature, oil well daily fluid production rate, effective head, the data such as well liquid bulk density, central processing unit or upper station control computer install system efficiency of pumping well software for calculation and Expert System For Fault Dlagnosis of Sucker Rod Pumping Well, automatic computational analysis system efficiency of pumping well, surface efficiency, Downhole efficiency and pump efficiency, by carrying out superposition to the indicator card of rod-pumped well and parameters curve and side-by-side comparison analyzes, oil pumper is made to possess memory and self-learning function, intelligentized control method and fault diagnosis and prediction are reported to the police on the spot to realize oil pumper, improve safety in production and the system effectiveness of rod-pumped well.
8) data remote and remote switch well control system is realized by communication module, and with field production management system seamless access, can by data importing oil field data library storage, the available machine time of automatic meter record rod-pumped well, running time, the time graph of collection parameters, frequency, power factor, electric energy are accumulative, system effectiveness, generate oil well production daily record and the various data sheet required for field production management and curve.
9) computer network management of rod-pumped well is achieved, system efficiency of pumping well remote online is monitored in real time become a reality with Automatic Optimal, improve system efficiency of pumping well, not only simplify the operation, convenient and swift, save object that is artificial, that also reach energy-saving and emission-reduction, increase economic efficiency simultaneously.
above technical characteristic constitutes embodiments of the invention, and it has stronger compliance and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (10)
1. a power-balance digital automatic control oil pumping method, is characterized in that comprising oil recovery robot, and this oil recovery robot comprises mair motor, walking beam, balance arm, crank and polished rod eye; Balance arm is installed with at the left end of walking beam, the drive unit that balance arm is separately installed with portable ballast box and portable ballast box can be made to move left and right, oil recovery robot is provided with stroke procedure measuring appliance, polished rod eye is installed with load transducer; Also comprise central processing unit and three phase electrical parameters harvester, this three phase electrical parameters harvester is arranged on energization input; The method is carried out in the steps below:
The first step, in each stroke procedure, central processing unit calculates the current value collected and magnitude of voltage, obtains the average power content P in down stroke
underwith the average power content P in upstroke
on, and carry out size and compare, take higher value as denominator and P
greatly, take smaller value as molecule and P
little, then rated output balance angle value H2 and H2=P
little/ P
greatly;
Second step, obtains N number of power-balance angle value H2 for N time by the number of strokes of setting, obtains power-balance degree average H2 to N number of power-balance angle value H2 after carrying out arithmetic average
on average, then compare process, power-balance degree lower limit set value is A21, and power-balance degree regulates target lower limit set value to be A22;
When after N stroke, H2
on averagevalue meets A21≤H2
on averagefor power-balance state, portable ballast box is not regulated;
When after N stroke, H2
on averagevalue is less than A21 and P
underbe less than P
ontime be power under-balanced state, now by drive unit, portable ballast box is moved to the left, makes power-balance degree average H2
on averagereach A22≤H2
on average;
When after N stroke, H2
on averagevalue is less than A21 and P
underbe greater than P
ontime be power overbalance state, now by drive unit, portable ballast box is moved right, makes power-balance degree average H2
on averagereach A22≤H2
on average.
2. power-balance digital automatic control oil pumping method according to claim 1, it is characterized in that respectively the data that stroke procedure measuring appliance, three phase electrical parameters harvester collect being transferred to central processing unit, central processing unit is in each stroke procedure, the current value collected is processed, finds out the maximum current value I in down stroke
lower maxwith the maximum current value I in upstroke
upper max, central processing unit calculates current balance type angle value H1 and the H1=I of each stroke procedure
lower max/ I
upper max;
Obtain N number of current balance type angle value H1 for N time by setting number of strokes, after arithmetic average is carried out to N number of current balance type angle value H1, obtain current balance type degree average H1
on average, then compare process, current balance type degree lower limit set value is A11, and current balance type degree regulates target lower limit set value to be A12, and current balance type degree upper limit set value is B11, and current balance type degree regulates target upper limit setting value to be B12;
When after N stroke, H1
on averagevalue meets A11≤H1
on average≤ B11 is current balance type state, does not regulate portable ballast box;
When after N stroke, H1
on averagebe electric current under-balanced state when being less than A11, now by drive unit, portable ballast box be moved to the left, make current balance type degree average H1
on averagereach A12≤H1
on average≤ B12;
When after N stroke, H1
on averagebe electric current overbalance state when being greater than B11, now by drive unit, portable ballast box moved right, make current balance type degree average H1
on averagereach A12≤H1
on average≤ B12.
3. power-balance digital automatic control oil pumping method according to claim 1 and 2, it is characterized in that, between mair motor and energization input, frequency converter is installed, polished rod eye being installed with load transducer for gathering polished rod load value F, oil recovery robot being provided with stroke procedure measuring appliance for gathering suspension point shift value S; In each stroke procedure, central processing unit carries out analysis and calculation according to the polished rod load value F collected and suspension point shift value S and obtains surface dynamometer card, its ordinate is the coordinate of polished rod polished rod load value F in oil pumping process, abscissa is the coordinate of polished rod suspension point shift value S in oil pumping process, central processing unit gathers the effective stroke value S2 of upstroke throw of pump value S1 and down stroke pump according to surface dynamometer card, then calculates pump degree of filling H3 and H3=S2/S1;
Obtain N number of pump for N time by the number of strokes of setting and be full of angle value H3, N number of pump is full of after angle value H3 carries out arithmetic average and obtains pump degree of filling average H3
on average, then compare process, pump degree of filling lower limit set value is A31, and pump degree of filling regulates target lower limit set value to be A32, and pump degree of filling upper limit set value is B31;
When after N stroke, H3
on averagevalue meets A31≤H3
on average≤ B31 is the appropriate state of jig frequency, does not carry out jig frequency adjustment;
When after N stroke, H3
on averagewhen being less than A31, be the too fast state of jig frequency, now reduce mair motor rotating speed by frequency converter and reduce jig frequency, making pump degree of filling average H3
on averagereach A32≤H3
on average≤ B31;
When after N stroke, H3
on averagewhen being greater than B31, for jig frequency crosses slow state, now raise mair motor rotating speed by frequency converter and increase jig frequency, making pump degree of filling average H3
on averagereach A32≤H3
on average≤ B31.
4. the power-balance digital automatic control oil pumping method according to claim 1 or 2 or 3, is characterized in that A11 value be 0.8 to 0.85, A12 value be 0.9 to 0.95, B11 value be 1.10 to 1.15, B12 values is 1.0 to 1.05; Or/and A21 value is 0.5 to 0.6, A22 value is 0.80 to 0.90; Or/and A31 value is 0.5 to 0.6, A32 value be 0.75 to 0.85, B31 value is 0.85 to 0.95.
5. the power-balance digital automatic control oil pumping method according to claim 1 or 2 or 3 or 4, is characterized in that the number of strokes N set is the number of times of setting; Or/and stroke procedure measuring appliance is be arranged on angular displacement sensor on walking beam or for being fixedly mounted on proximity switch on crank or for being arranged on the suspension point displacement detecting sensor on polished rod eye; Or/and three phase electrical parameters harvester is electrical quantity dynamic equilibrium tester or current transformer.
6. implement an oil recovery robot for the power-balance digital automatic control oil pumping method as described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that comprising mair motor, reducer, crank, connecting rod, walking beam, balance arm, support, horse head, base, brake gear, polished rod eye and stroke procedure measuring appliance, base is installed with mair motor, reducer, brake gear and support, the walking beam that can swing up and down is hinged on the top of support by the walking beam bearing at middle part, the power output shaft of reducer is provided with crank, lower end and the crank of connecting rod are hinged, the upper end thereof of connecting rod is at the left part of walking beam, the right-hand member of walking beam is installed with horse head, horse head is provided with polished rod eye, balance arm is installed with at the left end of walking beam, fixed weight case is installed with at the left part of balance arm, the drive unit that balance arm is separately installed with portable ballast box and portable ballast box can be made to move left and right.
7. oil recovery robot according to claim 6, it is characterized in that drive unit comprises the reducer of band balance motor, leading screw and screw, reducer with balance motor is fixedly mounted on balance arm, lead screw shaft bearing is installed with in one end of balance arm, leading screw asessory shaft bearing is installed with at the other end of balance arm, the two ends of leading screw are arranged in lead screw shaft bearing and leading screw asessory shaft bearing respectively, one end of leading screw is fixedly installed togather by the clutch end of shaft coupling with the reducer of band balance motor, leading screw is provided with screw, portable ballast box is saddle, groove is had in the middle part of it, leading screw passes in the groove of portable ballast box, portable ballast box is installed with four fixed blocks, cross recess is formed between four fixed blocks, screw is arranged in cross recess and also can floats up and down, the cover plate that can block screw is installed with in the outer end of fixed block, balance arm is provided with slide rail, in the inner side of portable ballast box, roller is installed, roller is positioned on slide rail, or/and be provided with safety caging device on balance arm and portable ballast box, this safety caging device comprises tablet, down stroke inductive switch and up stroke inductive switch, or/and stroke procedure measuring appliance is be arranged on angular displacement sensor on walking beam or for being fixedly mounted on proximity switch on crank or for being arranged on the suspension point displacement detecting sensor on polished rod eye, portable ballast box comprises movable case and movable weight, there is dividing plate at movable case internal fixtion and movable case be divided into fixed weight chamber and moving counterweight chamber, fixed weight thing is filled with in fixed weight chamber, in moving counterweight chamber, movable weight is installed, movable case is installed with the insurance pin that can block movable weight, or/and, fixed weight case comprises fixed case and movable weight, there is dividing plate at fixed case internal fixtion and fixed case be divided into fixed weight chamber and moving counterweight chamber, fixed weight thing is filled with in fixed weight chamber, in moving counterweight chamber, movable weight is installed, fixed case is installed with the insurance pin that can block movable weight.
8. the oil recovery robot according to claim 6 or 7, is characterized in that polished rod eye comprises polished rod eye body, load transducer and outstanding rope; Polished rod eye body is provided with load transducer.
9. the oil recovery robot according to claim 6 or 7 or 8, it is characterized in that base being installed with Digital Control cabinet, at Digital Control cabinet internal fixtion, central processing unit, communication module, power module, display module, electricity quantity module, three phase electrical parameters harvester, control panel, on off control relay, frequency converter, mair motor frequency-changing AC contactor, mair motor industrial frequency AC contactor, comprehensive protector of motor, balancing control relay, balance motor A.C. contactor and current transducer are installed; the signal output part of load transducer is electrically connected by the first signal input part of load transducer cable and lower stube cable and central processing unit, the signal output part of stroke procedure measuring appliance is electrically connected by the secondary signal input of movable cable and lower stube cable and central processing unit, the power input line of the reducer of band balance motor is provided with current transducer, the signal output part of current transducer and the 3rd signal input part of central processing unit are electrically connected by wire, the signal output part of down stroke inductive switch and up stroke inductive switch is by upper stube cable, 4th signal input part of movable cable and lower stube cable and central processing unit is electrically connected, the signal output part of down stroke inductive switch and up stroke inductive switch is by upper stube cable, the signal input part of movable cable and lower stube cable and balancing control relay is electrically connected, first signal output part of central processing unit and the signal input part of balancing control relay are electrically connected by wire, the signal output part of balancing control relay and the signal input part of balance motor AC contactor are electrically connected by wire, the output of balance motor A.C. contactor and the input of balance motor are electrically connected by wire, the output of balance motor A.C. contactor and the signal input part of current transducer are electrically connected by wire, the secondary signal output of central processing unit and the signal input part of on off control relay are electrically connected by wire, the signal output part of on off control relay and the signal input part of mair motor industrial frequency AC contactor are electrically connected by wire, the output of mair motor industrial frequency AC contactor and the input of mair motor are electrically connected by wire, the signal output part of on off control relay and the signal input part of mair motor frequency-changing AC contactor are electrically connected by wire, the output of mair motor frequency-changing AC contactor and the input of mair motor are electrically connected by wire.
10. the oil recovery robot according to claim 6 or 7 or 8 or 9, is characterized in that being with the left end of the reducer power output shaft of balance motor to be fixed with square head or six square toes, fixed weight case is installed with crank supporting seat; Or/and, base is provided with belt pulley fast replacing device, and the lower end of belt pulley fast replacing device is hinged on base, and the upper surface of belt pulley fast replacing device is installed with mair motor, support is hinged with support bar, walking beam has the corresponding free bearing connecting support bar; Or/and, be installed with buffer at the left part of base; Or/and three phase electrical parameters harvester is electrical quantity dynamic equilibrium tester or current transformer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410852567.1A CN104612631B (en) | 2014-12-31 | 2014-12-31 | Power-balance digital automatic control oil pumping method and oil recovery robot |
| PCT/CN2015/100031 WO2016107591A1 (en) | 2014-12-31 | 2015-12-31 | Method for power-balanced digitized automatically controlled oil pumping and oil-pumping robot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410852567.1A CN104612631B (en) | 2014-12-31 | 2014-12-31 | Power-balance digital automatic control oil pumping method and oil recovery robot |
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| CN104612631A true CN104612631A (en) | 2015-05-13 |
| CN104612631B CN104612631B (en) | 2018-07-27 |
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| CN111894549A (en) * | 2020-06-22 | 2020-11-06 | 哈尔滨市贝特汽车电子器材厂 | Continuous measuring device for liquid production capacity of wellhead of oil pumping well |
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