CN104612631B - Power-balance digital automatic control oil pumping method and oil recovery robot - Google Patents
Power-balance digital automatic control oil pumping method and oil recovery robot Download PDFInfo
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- CN104612631B CN104612631B CN201410852567.1A CN201410852567A CN104612631B CN 104612631 B CN104612631 B CN 104612631B CN 201410852567 A CN201410852567 A CN 201410852567A CN 104612631 B CN104612631 B CN 104612631B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The present invention relates to beam pumping unit technical fields, it is a kind of power-balance digital automatic control oil pumping method and oil recovery robot, the oil recovery robot includes main motor, retarder, crank, connecting rod, walking beam, balance arm, holder, horse head, pedestal, brake gear, polished rod eye, load transducer, stroke procedure measuring appliance, safety caging device and digitlization switch board, have the characteristics that safe and reliable, realize pumping unit Automatic Optimal adjustment balance and jig frequency, oil well output is given full play to, improve system efficiency of pumping well, and with oil field computer network system seamless access, realize data remote and the control of remote switch well, simplify operation, it is convenient and efficient, it saves artificial, it energy-saving and emission-reduction and increases economic efficiency.
Description
Technical field
The present invention relates to beam pumping unit technical field, be a kind of power-balance digital automatic control oil pumping method and
Oil recovery robot.
Background technology
Existing beam pumping unit mainly has：Conventional type beam pumping unit, prefix type beam pumping unit, eccentrically arranged type trip
Girder-like oil pump and Hetrotype travelling beam type oil extractor etc., at present beam pumping unit generally comprise horse head, walking beam, holder, connecting rod, bottom
Seat, crank, balancing device, retarder, brake, motor and polished rod eye, be installed on pedestal holder, retarder, brake,
Motor and switch board etc., walking beam is hinged on holder, and crank is fixedly mounted on reducer output shaft, and one end of connecting rod is hinged on
On crank, the other end of connecting rod is hinged on walking beam, and material is thus formed four-bar mechanism, horse head is mounted on the front end of walking beam,
Polished rod eye is mounted on horse head；Balancing device is mounted on crank, or/and, balancing device is mounted on walking beam, by manually adding
Subtract counterweight amount of substance change trimming moment and carrys out adjustment；Or/and by artificial mobile counterweight object location change trimming moment come
Adjustment；But all there is the notable deficiency of two aspects in existing beam pumping unit：First, it is unable to automatic adjusting balance, and it is flat
Weighing apparatus needs to be adjusted in time according to the variation of oil well load, if balanced ratio is too low, pumping unit working condition can be caused to deteriorate
Increase with power consumption；Second is that jig frequency cannot be adjusted automatically, cause the oil pumping ability of pumping unit be frequently above or less than oil well oil-producing
Amount causes empty pumping and liquid hammer, damage oil pumping if the too fast oil production that oil pumping ability can be caused to be higher than oil well of the jig frequency of pumping unit
Machine, sucker rod, oil well pump, reduce the service life, and waste electric energy, if the jig frequency of pumping unit can cause oil pumping ability low slowly excessively
In the oil production of oil well, oil well output is reduced.
Invention content
The present invention provides a kind of power-balance digital automatic control oil pumping method and oil recovery robots, overcome above-mentioned
The deficiency of the prior art can effectively solve existing beam pumping unit and be unable to automatic adjusting balance and cannot adjust jig frequency automatically, lead
Cause that balanced ratio is low, jig frequency and well oil output mismatch, cause pumping unit easily to break down, oil well is difficult to realize maximum production capacity and
The high problem of production cost.
One of technical scheme of the present invention is realized by following measures：A kind of power-balance digital automatic control
Oil pumping method, including oil recovery robot, the oil recovery robot include main motor, walking beam, balance arm, crank and polished rod eye,
The left end of walking beam is installed with balance arm, is separately installed with mobile ballast box on balance arm and movable type can be made to match
The driving device that loaded van moves left and right is equipped with stroke procedure measuring appliance in oil recovery robot, is fixedly mounted on polished rod eye
There is load transducer；Further include central processing unit and three phase electrical parameters harvester, which is mounted on
On energization input；This method carries out in the steps below：
The first step, in each stroke procedure, central processing unit calculates collected current value and voltage value,
Obtain the average power content P in down strokeUnderWith the average power content P in upstrokeOn, and size comparison is carried out, it is with higher value
Denominator, that is, PGreatly, using smaller value as molecule, that is, PIt is small, then calculate power-balance angle value H2, that is, H2=PIt is small /PGreatly；
Second step obtains N number of power-balance angle value H2 by the number of strokes n times of setting, to N number of power-balance angle value H2 into
Power-balance degree average value H2 is obtained after row arithmetic averageIt is average, it is then compared processing, power-balance degree lower limit set value is
A21, it is A22 that power-balance degree, which adjusts target lower limit set value,；
After n times stroke, H2It is averageValue meets A21≤H2It is averageFor power-balance state, mobile ballast box is not adjusted
Section；
After n times stroke, H2It is averageValue is less than A21 and PUnderLess than POnWhen be power under-balanced state, at this time pass through drive dress
Setting makes mobile ballast box be moved to the left, and makes power-balance degree average value H2It is averageReach A22≤H2It is average；
After n times stroke, H2It is averageValue is less than A21 and PUnderMore than POnWhen be power overbalance state, at this time pass through drive dress
Setting makes mobile ballast box move right, and makes power-balance degree average value H2It is averageReach A22≤H2It is average。
Here is the further optimization and/or improvements to one of foregoing invention technical solution：
It is above-mentioned that stroke procedure measuring appliance, the collected data of three phase electrical parameters harvester are transferred to central processing respectively
Device, central processing unit are handled collected current value in each stroke procedure, find out the maximum electricity in down stroke
Flow valuve ILower maxWith the maximum current value I in upstrokeUpper max, central processing unit calculates the current balance type angle value H1 of each stroke procedure
That is H1=ILower max / IUpper max；
N number of current balance type angle value H1 is obtained by setting number of strokes n times, it is flat to carry out arithmetic to N number of current balance type angle value H1
Current balance type degree average value H1 is obtained afterwardsIt is average, it is then compared processing, current balance type degree lower limit set value is A11, electric current
It is A12 that the degree of balance, which adjusts target lower limit set value, and current balance type degree upper limit set value is B11, and current balance type degree is adjusted in target
Limit setting value is B12；
After n times stroke, H1It is averageValue meets A11≤H1It is average≤ B11 be current balance type state, not to mobile ballast box into
Row is adjusted；
After n times stroke, H1It is averageIt is electric current under-balanced state when less than A11, so that movable type is matched by driving device at this time
Loaded van is moved to the left, and makes current balance type degree average value H1It is averageReach A12≤H1It is average≤B12；
After n times stroke, H1It is averageIt is electric current overbalance state when more than B11, so that movable type is matched by driving device at this time
Loaded van moves right, and makes current balance type degree average value H1It is averageReach A12≤H1It is average≤B12。
It is above-mentioned that frequency converter is installed between main motor and energization input, it is installed with load transducer on polished rod eye
For acquiring polished rod load value F, stroke procedure measuring appliance is installed in oil recovery robot for acquiring suspension point shift value S；
In each stroke procedure, central processing unit is analyzed and is calculated according to collected polished rod load value F and suspension point shift value S
Surface dynamometer card is obtained, ordinate is the coordinate of polished rod polished rod load value F in oil pumping process, and abscissa is that polished rod is being pumped
The coordinate of suspension point shift value S in the process, central processing unit acquire the stroke value S1 and undershoot that upstroke pumps according to surface dynamometer card
Then the effective stroke value S2 of journey pump calculates pump degree of filling H3, that is, H3=S2/S1；
N number of pump is obtained by the number of strokes n times of setting and is full of angle value H3, and arithmetic average is carried out full of angle value H3 to N number of pump
After obtain pump degree of filling average value H3It is average, it is then compared processing, pump degree of filling lower limit set value is A31, pumps degree of filling tune
Program mark lower limit set value is A32, and pump degree of filling upper limit set value is B31；
After n times stroke, H3It is averageValue meets A31≤H3It is average≤ B31 is the appropriate state of jig frequency, is adjusted without jig frequency；
After n times stroke, H3It is averageWhen less than A31, it is the too fast state of jig frequency, main motor rotating speed is reduced by frequency converter at this time
And reduce jig frequency, make pump degree of filling average value H3It is averageReach A32≤H3It is average≤B31；
After n times stroke, H3It is averageWhen more than B31, it is the excessively slow state of jig frequency, main motor rotating speed is increased by frequency converter at this time
And increase jig frequency, make pump degree of filling average value H3It is averageReach A32≤H3It is average≤B31。
Above-mentioned A11 values be 0.8 to 0.85, A12 values be 0.9 to 0.95, B11 values be 1.10 to 1.15, B12 values be 1.0 to
1.05；Or/and it is 0.80 to 0.90 that A21 values, which are 0.5 to 0.6, A22 values,；Or/and A31 values are that 0.5 to 0.6, A32 values are
0.75 to 0.85, B31 value are 0.85 to 0.95.
The above-mentioned number of strokes N set is the number of setting；Or/and stroke procedure measuring appliance is on walking beam
Angular displacement sensor or for be fixedly mounted on crank close to switch or on polished rod eye suspension point displacement detecting pass
Sensor；Or/and three phase electrical parameters harvester is electrical parameter dynamic equilibrium tester or current transformer.
Technical scheme of the present invention second is that being realized by following measures：A kind of oil recovery robot, including main motor,
Retarder, crank, connecting rod, walking beam, balance arm, holder, horse head, pedestal, brake gear, polished rod eye and stroke procedure measure
Device；Main motor, retarder, brake gear and holder are installed on pedestal, the walking beam that can be swung up and down passes through middle part
Walking beam bearing is hinged on the top of holder, and crank is equipped on the power output shaft of retarder, and lower end and the crank of connecting rod are cut with scissors
It is connected together, the upper end of connecting rod is hinged on the left part of walking beam, and the right end of walking beam is installed with horse head, hanging rope is equipped on horse head
Device is installed with balance arm in the left end of walking beam, is installed with fixed weight case in the left part of balance arm, is balancing
The driving device for being separately installed with mobile ballast box on arm and mobile ballast box capable of being made to move left and right.
Here is two further optimization and/or improvements to foregoing invention technical solution：
Above-mentioned driving device includes the retarder with balance motor, leading screw and screw, and the retarder with balance motor is fixed
On balance arm, lead screw shaft bearings are installed in one end of balance arm, are fixed in the other end of balance arm
Leading screw asessory shaft bearing is installed, the both ends of leading screw are separately mounted in lead screw shaft bearings and leading screw asessory shaft bearing, leading screw
One end is fixedly installed togather by the power output end of shaft coupling and the retarder with balance motor, and silk is equipped on leading screw
Mother, mobile ballast box are in saddle, and there is straight slot at middle part, and leading screw is passed through out of mobile ballast box straight slot, in movable type
It is fixedly mounted there are four fixed block on ballast box, forms cross recess between four fixed blocks, screw is mounted in cross recess
And can float up and down, it is installed with the cover board that can block screw in the outer end of fixed block, is arranged on balance arm
There is sliding rail, idler wheel is installed on the inside of mobile ballast box, idler wheel is located on sliding rail；Or/and in balance arm and movable type
Safety caging device is installed, which includes tablet, down stroke inductive switch and up stroke sense on ballast box
Inductive switch；Or/and stroke procedure measuring appliance is angular displacement sensor on walking beam or to be fixedly mounted on crank
Close to switch or it is the suspension point displacement detecting sensor on polished rod eye；Mobile ballast box includes that movable case and activity are matched
Pouring weight；It is fixed with partition board in movable case and movable case is divided into fixed weight chamber and moving counterweight chamber, in fixed weight intracavitary
Filled with fixed weight object, movable weight is installed in moving counterweight chamber, work can be blocked by being installed on movable case
The insurance bar of dynamic clump weight；Or/and fixed weight case includes fixed case and movable weight, be fixed in fixed case every
Fixed case is simultaneously divided into fixed weight chamber and moving counterweight chamber by plate, fixed weight object is filled in fixed weight intracavitary, in activity
Movable weight is installed in counterweight chamber, the insurance bar that can block movable weight is installed on fixed case.
Above-mentioned polished rod eye includes hanging rope body, load transducer and hanging rope；Load transducer is installed on hanging rope body.
It is above-mentioned that Digital Control cabinet is installed on pedestal, it is installed with central processing in Digital Control cabinet
Device, communication module, power module, display module, electricity quantity module, three phase electrical parameters harvester, control panel, start-up and shut-down control after
Electric appliance, frequency converter, main motor frequency-changing AC contactor, main motor industrial frequency AC contactor, comprehensive protector of motor, balancing control
Relay, balance motor A.C. contactor and current transducer processed；The signal output end of load transducer passes through load transducer
Cable and the first signal input part of lower connecting cable and central processing unit are electrically connected, the signal of stroke procedure measuring appliance
Output end is electrically connected by movable cable and the second signal input terminal of lower connecting cable and central processing unit, flat in band
Current transducer, the signal output end and central processing of current transducer are installed on the power input line of the retarder of weighing apparatus motor
The third signal input part of device is electrically connected by conducting wire, and the signal of down stroke inductive switch and up stroke inductive switch is defeated
Outlet is connected electrically in one by upper connecting cable, movable cable and the fourth signal input terminal of lower connecting cable and central processing unit
It rises, the signal output end of down stroke inductive switch and up stroke inductive switch passes through upper connecting cable, movable cable and lower connection
The signal input part that cable controls relay with balancing is electrically connected, the first signal output end and tune of central processing unit
Balance control relay signal input part be electrically connected by conducting wire, balancing control relay signal output end and
The signal input part of balance motor A.C. contactor is electrically connected by conducting wire, the output end of balance motor A.C. contactor
It is electrically connected by conducting wire with the input terminal of balance motor, the output end and current transducer of balance motor A.C. contactor
Signal input part be electrically connected by conducting wire, the second signal output end of central processing unit and start-up and shut-down control relay
Signal input part is electrically connected by conducting wire, signal output end and main motor the industrial frequency AC contact of start-up and shut-down control relay
The signal input part of device is electrically connected by conducting wire, the input of the output end and main motor of main motor industrial frequency AC contactor
End is electrically connected by conducting wire, the signal of the signal output end and main motor frequency-changing AC contactor of start-up and shut-down control relay
Input terminal is electrically connected by conducting wire, and the output end of main motor frequency-changing AC contactor and the input terminal of main motor are by leading
Line is electrically connected.
The above-mentioned left end in the reducer power output shaft with balance motor is fixed with square head or six square toes, matches in fixation
Crank support base is installed on loaded van；Or/and belt pulley fast replacing device is installed on pedestal, belt pulley fast replacing device
Lower end be hinged on pedestal, main motor is installed on the upper surface of belt pulley fast replacing device, support is hinged on holder
Bar has the free bearing for being correspondingly connected with supporting rod on walking beam；Or/and it is installed with buffer unit in the left part of pedestal；Or/and
Three phase electrical parameters harvester is electrical parameter dynamic equilibrium tester or current transformer.
Structure of the invention is reasonable and compact, easy to use, by main motor, retarder, connecting rod, walking beam, holder, horse head,
Polished rod eye, load transducer, angular displacement sensor, safety caging device and digitlization switch board are used cooperatively, and not only make shifting
Dynamic formula ballast box moves left and right on balance arm, the polished rod load under the various operating modes of autobalance, and according to pump degree of filling
Variation automatically adjust beam-pumping unit jig frequency, have the characteristics that safe and reliable, facilitate operation, given full play to oil well output, carry
High balanced ratio, realizes energy-saving.
Description of the drawings
Attached drawing 1 is the main structure diagram of the embodiment of the present invention 2.
Attached drawing 2 is the main view enlarged structure schematic diagram that arm is balanced in the embodiment of the present invention 2.
Attached drawing 3 is the A of mobile ballast box in the embodiment of the present invention 2 to enlarged structure schematic diagram.
Attached drawing 4 is that mobile ballast box is fitted without the A of cover board to enlarged structure schematic diagram in the embodiment of the present invention 2.
Attached drawing 5 is the circuit control schematic diagram of the embodiment of the present invention 2.
Attached drawing 6 is the indicator card under the too fast state of jig frequency of the present invention.
Attached drawing 7 is the indicator card under the appropriate state of jig frequency of the present invention.
Attached drawing 8 is the indicator card under the excessively slow state of jig frequency of the present invention.
Attached drawing 9 is the electricity ginseng curve of power under-balanced state of the present invention and electric current under-balanced state.
Attached drawing 10 is the electricity ginseng curve of power-balance state of the present invention and current balance type state.
Attached drawing 11 is the electricity ginseng curve of power overbalance state of the present invention and electric current overbalance state.
Coding in attached drawing is respectively：1 is polished rod eye, and 2 be horse head, and 3 be walking beam, and 4 be walking beam bearing, and 5 be holder, and 6 are
Connecting rod, 7 be balance arm, and 8 be retarder, and 9 be crank, and 10 be hand crank, and 11 be buffer unit, and 12 be pedestal, and 13 be brake
Device, 14 be Digital Control cabinet, and 15 be main motor, and 16 be angular displacement sensor, and 17 be load transducer, and 18 be load sensing
Device cable, 19 be movable cable, and 20 be upper connecting cable, and 21 be lower connecting cable, and 22 be square head, and 23 is with balance motors
Retarder, 24 be shaft coupling, and 25 be lead screw shaft bearings, and 26 be leading screw, and 27 be sliding rail, and 28 be mobile ballast box, and 29 be screw,
30 be fixed block, and 31 be cover board, and 32 be fastening bolt, and 33 be leading screw asessory shaft bearing, and 34 be up stroke inductive switch, and 35 be sense
Plate is answered, 36 be movable weight, and 37 be insurance bar, and 38 be down stroke inductive switch, and 39 be movable case buffer stopper, and 40 be gear
Block, 41 be idler wheel, and 42 be fixed weight object, and 43 be crank support base, and 44 be fixed weight case.
Specific implementation mode
The present invention is not limited by following embodiments, can be determined according to the technique and scheme of the present invention with actual conditions specific
Embodiment.
In the present invention, for ease of description, the description of the relative position relation of each component is according to Figure of description 1
Butut mode be described, such as：The position relationship of front, rear, top, and bottom, left and right etc. is the cloth according to Figure of description 1
Figure direction determines.
With reference to embodiment and attached drawing, the invention will be further described：
Embodiment 1, as shown in attached drawing 9,10,11, the power-balance digital automatic control oil pumping method, including oil production machine
Device people, the oil recovery robot include main motor 15, walking beam 3, balance arm 7, crank 9 and polished rod eye 1, are consolidated in the left end of walking beam 3
Dingan County is separately installed with mobile ballast box 28 on balance arm 7 and mobile ballast box 28 can be made left equipped with balance arm 7
The driving device moved right is equipped with stroke procedure measuring appliance in oil recovery robot, and load is installed on polished rod eye 1
Sensor 17；Further include central processing unit and three phase electrical parameters harvester, which is mounted on power supply
On input terminal；This method carries out in the steps below：
The first step, in each stroke procedure, central processing unit calculates collected current value and voltage value,
Obtain the average power content P in down strokeUnderWith the average power content P in upstrokeOn, and size comparison is carried out, it is with higher value
Denominator, that is, PGreatly, using smaller value as molecule, that is, PIt is small, then calculate power-balance angle value H2, that is, H2=PIt is small /PGreatly；
Second step obtains N number of power-balance angle value H2 by the number of strokes n times of setting, to N number of power-balance angle value H2 into
Power-balance degree average value H2 is obtained after row arithmetic averageIt is average, it is then compared processing, power-balance degree lower limit set value is
A21, it is A22 that power-balance degree, which adjusts target lower limit set value,；
After n times stroke, H2It is averageValue meets A21≤H2It is averageFor power-balance state, mobile ballast box is not adjusted
Section；
After n times stroke, H2It is averageValue is less than A21 and PUnderLess than POnWhen be power under-balanced state, at this time pass through drive dress
Setting makes mobile ballast box be moved to the left, and makes power-balance degree average value H2It is averageReach A22≤H2It is average；
After n times stroke, H2It is averageValue is less than A21 and PUnderMore than POnWhen be power overbalance state, at this time pass through drive dress
Setting makes mobile ballast box move right, and makes power-balance degree average value H2It is averageReach A22≤H2It is average。
By three phase electrical parameters harvester to during stroke electric current and voltage be acquired, can be obtained respectively after acquisition
To three kinds of state diagrams, the electricity ginseng curve of respectively power under-balanced state and electric current under-balanced state is as shown in Fig. 9, power is flat
The electricity ginseng curve of weighing apparatus state and current balance type state is as shown in Fig. 10 and power overbalance state and electric current overbalance state
Electricity ginseng curve is as shown in Fig. 11.
Above-described embodiment 1 can be made further optimization and/or improvements according to actual needs：
As shown in attached drawing 9,10,11, respectively by stroke procedure measuring appliance, the collected number of three phase electrical parameters harvester
According to central processing unit is transferred to, central processing unit handles collected current value, finds out in each stroke procedure
Maximum current value I in down strokeLower maxWith the maximum current value I in upstrokeUpper max, each stroke procedure of central processing unit calculating
Current balance type angle value H1, that is, H1=ILower max / IUpper max；
N number of current balance type angle value H1 is obtained by setting number of strokes n times, it is flat to carry out arithmetic to N number of current balance type angle value H1
Current balance type degree average value H1 is obtained afterwardsIt is average, it is then compared processing, current balance type degree lower limit set value is A11, electric current
It is A12 that the degree of balance, which adjusts target lower limit set value, and current balance type degree upper limit set value is B11, and current balance type degree is adjusted in target
Limit setting value is B12；
After n times stroke, H1It is averageValue meets A11≤H1It is average≤ B11 be current balance type state, not to mobile ballast box into
Row is adjusted；
After n times stroke, H1It is averageIt is electric current under-balanced state when less than A11, so that movable type is matched by driving device at this time
Loaded van is moved to the left, and makes current balance type degree average value H1It is averageReach A12≤H1It is average≤B12；
After n times stroke, H1It is averageIt is electric current overbalance state when more than B11, so that movable type is matched by driving device at this time
Loaded van moves right, and makes current balance type degree average value H1It is averageReach A12≤H1It is average≤B12。
By three phase electrical parameters harvester to during stroke electric current and voltage be acquired, can be obtained respectively after acquisition
To three kinds of state diagrams, the electricity ginseng curve of respectively power under-balanced state and electric current under-balanced state is as shown in Fig. 9, power is flat
The electricity ginseng curve of weighing apparatus state and current balance type state as shown in Fig. 10, the electricity of power overbalance state and electric current overbalance state
It is as shown in Fig. 11 to join curve.
As shown in attached drawing 6,7,8, frequency converter is installed between main motor 15 and energization input, is fixed on polished rod eye 1
Load transducer 17 is installed for acquiring polished rod load value F, stroke procedure measuring appliance is installed in oil recovery robot and is used for
Acquire suspension point shift value S；In each stroke procedure, central processing unit is according to collected polished rod load value F and suspension point position
Shifting value S is analyzed and is calculated surface dynamometer card, and ordinate is the seat of polished rod polished rod load value F in oil pumping process
Mark, abscissa are the coordinate of polished rod suspension point shift value S in oil pumping process, and central processing unit is acquired according to surface dynamometer card and rushed
The effective stroke value S2 of the stroke value S1 and down stroke pump of journey pump, then calculate pump degree of filling H3, that is, H3=S2/S1；
N number of pump is obtained by the number of strokes n times of setting and is full of angle value H3, and arithmetic average is carried out full of angle value H3 to N number of pump
After obtain pump degree of filling average value H3It is average, it is then compared processing, pump degree of filling lower limit set value is A31, pumps degree of filling tune
Program mark lower limit set value is A32, and pump degree of filling upper limit set value is B31；
After n times stroke, H3It is averageValue meets A31≤H3It is average≤ B31 is the appropriate state of jig frequency, is adjusted without jig frequency；
After n times stroke, H3It is averageWhen less than A31, it is the too fast state of jig frequency, main motor rotating speed is reduced by frequency converter at this time
And reduce jig frequency, make pump degree of filling average value H3It is averageReach A32≤H3It is average≤B31；
After n times stroke, H3It is averageWhen more than B31, it is the excessively slow state of jig frequency, main motor rotating speed is increased by frequency converter at this time
And increase jig frequency, make pump degree of filling average value H3It is averageReach A32≤H3It is average≤B31。
The suspension point displacement during stroke is acquired by stroke procedure measuring appliance, by load transducer to stroke
Polished rod load in the process is acquired, and is handled above-mentioned collected data by central processing unit, is obtained three kinds of shapes
Indicator card under the too fast state of state figure, respectively jig frequency is as shown in Fig. 6, indicator card such as 7 institute of attached drawing under the appropriate state of jig frequency
Show, the indicator card under the excessively slow state of jig frequency it is as shown in Fig. 8.
As needed, it be 0.9 to 0.95, B11 values is that 1.10 to 1.15, B12 values are that A11 values, which are 0.8 to 0.85, A12 values,
1.0 to 1.05；Or/and it is 0.80 to 0.90 that A21 values, which are 0.5 to 0.6, A22 values,；Or/and A31 values are 0.5 to 0.6, A32 values
Be 0.75 to 0.85, B31 values be 0.85 to 0.95.
POnFor the average power content in upstroke, PUnderFor the average power content in down stroke, IUpper maxFor upstroke main motor
15 maximum current values, ILower maxFor 15 maximum current value of down stroke main motor, electrical parameter dynamic equilibrium tester transfers data to
Central processing unit obtains power-balance degree H2, current balance type degree H1.
As needed, the pumping unit number of strokes N in the present invention is the number of setting；Or/and stroke procedure measuring appliance is
Angular displacement sensor 16 on walking beam 3 or for be fixedly mounted on crank 9 close to switch or for mounted on polished rod eye 1
On suspension point displacement detecting sensor；Or/and three phase electrical parameters harvester is that electrical parameter dynamic equilibrium tester or electric current are mutual
Sensor.
The calculating and analysis of pump degree of filling H3 needs to use the effective stroke of the stroke value S1 and down stroke pump of upstroke pump
The exact value of value S2, S1 and S2 should be obtained from pump dynamometers, and pump is mounted on oil pipe lower end, often away from ground in production practices
The even thousands of rice of depth hundreds of, it is difficult to directly obtain the indicator card of pump, therefore obtain approximate S1 values usually using ground work(figure
With S2 values.Surface dynamometer card is a pumping period（Including a complete upstroke and down stroke）Interior suspension point displacement S and right
The closed curve that the polished rod load F answered is constituted, abscissa are suspension point displacement S, and ordinate is polished rod load F.Stroke procedure measures
Device and load transducer are respectively by the analog electrical energy of the suspension point displacement S directly measured, polished rod load F by central processing unit
Conversion module is converted to digital electricity, and central processing unit acquires suspension point displacement S simultaneously by constant duration and corresponding suspension point carries
The digital electricity of lotus F forms a series of point data, while software logic identifies the institute of the S and F in a complete pumping period
There is point data, is handled by graphics software to get surface dynamometer card, as shown in attached drawing 6,7,8, pass through indicator card data
Spot scan searches and pumps the close of effective stroke S2 during the approximation and down stroke of pump stroke S1 during can calculating upstroke
Like value.
Can system efficiency of pumping well, rod-pumped well be calculated by central processing unit or upper station control computer through the invention
System effectiveness can be calculated by following two methods：
System efficiency of pumping well computational methods one
System efficiency of pumping well ηSystemRefer to effective work done and the pumping well system that down-hole liquid is given rise to ground
The ratio between input energy.That is the effective power P of rod-pumped welleWith input power PiRatio：
ηSystem=(Pe/PiThe formula of) × 100%（1）
Formula（1）In：
ηSystemFor system effectiveness, %；/ it is the division sign；PiFor the input power of rod-pumped well, refer to the total input of motor of oil extractor
Power, can be calculated by central processing unit or frequency converter metering obtains, kW；PeFor the effective power of rod-pumped well, refer to downhole oil
Liquid gives rise to the required power in ground, kW.
The effective power P of rod-pumped welleIt is calculated as follows：
Pe=(QIt is practical× H × ρ × g)/86400 formula（2）
Formula（2）In：
PeFor the effective power of rod-pumped well, kW；QIt is practicalIt, can be by single well metering device meter for the practical daily output fluid amount of oil well
Measure or oil recovery factory's production statistics data provide, m3/d；H is effective head, can be measured simultaneously by well fluid level echo device
Calculating obtains, m；ρ is oil well fluid density, can be detected and be provided by oil recovery factory's oil product, t/m3,；G is acceleration of gravity, g=9.8m/
s2；/ it is the division sign.
Wherein, effective head H is calculated as follows：
H=Hd+ (（Po-Pt）× 1000)/(ρ × g) formula（3）
Formula（3）In：
HdFor fluid level depth of oil well, can be measured by well fluid level echo device, m；PoIt, can be by number for well head oil pressure
Change gauge measurement or oil recovery factory's creation data provides, Mpa；PtFor surface casing pressure, it can be measured or recovered the oil by numerical pressure table
Factory's creation data provides, Mpa；/ it is the division sign.
System efficiency of pumping well computational methods two：
System efficiency of pumping well ηSystemThe surface efficiency η of pumping unit can be passed throughGroundWith Downhole efficiency ηUndergroundProduct obtain
It arrives.
ηSystem=（ηGround×ηUnderground）× 100% formula（4）
Formula（4）In：
ηGroundFor surface efficiency, %；ηUndergroundFor Downhole efficiency, %；
Wherein, surface efficiency：
ηGround= （PPolished rod/ Pi）× 100% formula（5）
Downhole efficiency：
ηUnderground= （Pe/ PPolished rod）× 100% formula（6）
Formula（5）In：PPolished rodFor polished rod horsepower, kW；
Wherein, polished rod horsepower：
PPolished rod=SWork(× n/60 formulas（7）
Formula（7）In：SWork(For surface dynamometer card area, kN ﹒ m；N is beam-pumping unit jig frequency, n/min.
Can rod-pumped well pump efficiency η be calculated by central processing unit or upper station control computer through the inventionPump efficiency, pump efficiency is to take out
The practical Liquid output Q of oil machine wellIt is practicalWith the theoretical lifting rate Q of pumpIt is theoreticalRatio.
ηPump efficiency=（QIt is practical/QIt is theoretical）× 100% formula（8）
Formula（8）In：ηPump efficiencyFor pump efficiency, %；/ it is the division sign；QIt is practicalIt, can be by single well metering device meter for the practical daily fluid production rate of oil well
Measure or oil recovery factory's production statistics data provide, m3/d；QIt is theoreticalFor the theoretical lifting rate of pump, m3/d；.
Wherein：QIt is theoretical=1.1304×10-3×S×n×D2Formula（9）
Formula（9）In：S is pumping unit stroke, m；N is jig frequency, n/min；D is pump diameter, mm.
It is the process that an energy is constantly transmitted and converted when pumping unit system works, and each transmission of energy has
Certain loss；System efficiency of pumping well is to weigh the leading indicator of oil well energy consumption and working condition, the pumping in each oil field in China
Oil machine well system effectiveness is generally relatively low, and only 20% or so, there is an urgent need for improve for the production management level and cost-effectiveness in oil field.It takes
Effective energy conservation measure improves system efficiency of pumping well, can reduce a ton liquid power consumption, input-output ratio is made to increase, same to time delay
The service life of leader, bar, pump obtains higher economic benefit, is that oil extraction in oil field produces one of the core objective pursued always.
Pump efficiency is the ratio of the practical Liquid output of rod-pumped well and the theoretical lifting rate of pump, and improving pump efficiency means that oil well supplies
Crude output increases in the unit interval when liquid energy power abundance, while can effectively improve system efficiency of pumping well, reduces energy consumption.
Embodiment 2, as shown in attached drawing 1,2,3,4, which includes main motor 15, retarder 8, crank 9, connecting rod
6, walking beam 3, balance arm 7, holder 5, horse head 2, pedestal 12, brake gear 13, polished rod eye 1 and stroke procedure measuring appliance；The bottom of at
It is installed with main motor 15, retarder 8, brake gear 13 and holder 5 on seat 12, the walking beam 3 that can be swung up and down passes through middle part
Walking beam bearing 4 be hinged on the top of holder 5, crank 9 is installed on the power output shaft of retarder 8, the lower end of connecting rod 6 with
Crank 9 is hinged, and the upper end of connecting rod 6 is hinged on the left part of walking beam 3, and the right end of walking beam 3 is installed with horse head 2, horse head 2
On polished rod eye 1 is installed, the left end of walking beam 3 be installed with balance arm 7, balance arm 7 left part be installed with
Fixed weight case 44 is separately installed with mobile ballast box 28 on balance arm 7 and mobile ballast box 28 or so can be made to move
Dynamic driving device.
Above-described embodiment 2 can be made further optimization and/or improvements according to actual needs：
As shown in attached drawing 1,2,3,4, driving device includes the retarder 23 with balance motor, leading screw 26 and screw 29, band
The retarder 23 of balance motor is fixedly mounted on balance arm 7, and lead screw shaft bearings are installed in one end of balance arm 7
25, it is installed with leading screw asessory shaft bearing 33 in the other end of balance arm 7, the both ends of leading screw 26 are separately mounted to lead screw shaft
In bearing 25 and leading screw asessory shaft bearing 33, one end of leading screw 26 is dynamic by shaft coupling 24 and the retarder 23 with balance motor
Power output end is fixedly installed togather, and screw 29 is equipped on leading screw 26, and mobile ballast box 28 is in saddle, and middle part has
Straight slot, leading screw 26 are passed through out of mobile ballast box 28 straight slot, and there are four fixed for fixed installation on mobile ballast box 28
Block 30 forms cross recess between four fixed blocks 30, and screw 29 is mounted in cross recess and can float up and down,
The outer end of fixed block 30 is installed with the cover board 31 that can block screw, sliding rail 27 is provided on balance arm 7, in movable type
The inside of ballast box 28 is equipped with idler wheel 41, and idler wheel 41 is located on sliding rail 27；Or/and in balance arm 7 and mobile ballast box
Safety caging device is installed, which includes tablet 35, down stroke inductive switch 38 and up stroke sense on 28
Inductive switch 34；Or/and stroke procedure measuring appliance is the angular displacement sensor 16 on walking beam 3 or is to be fixedly mounted on song
On handle 9 close to switch or be the suspension point displacement detecting sensor on polished rod eye 1；Or/and mobile ballast box 28 wraps
Include movable case and movable weight 36；It is fixed with partition board in movable case and movable case is divided into fixed weight chamber and moving counterweight
Chamber is filled with fixed weight object 42 in fixed weight intracavitary, movable weight 36 is equipped in moving counterweight chamber, in movable case
On be installed with the insurance bar 37 that can block movable weight 36；Or/and fixed weight case 44 includes fixed case and activity
Clump weight 36 is fixed with partition board in fixed case and fixed case is divided into fixed weight chamber and moving counterweight chamber, in fixed weight
Intracavitary is filled with fixed weight object 42, and movable weight 36 is equipped in moving counterweight chamber, is installed on fixed case
The insurance bar 37 of movable weight 36 can be blocked.It is installed with movable case buffer stopper on the right end top of fixed weight case
39, it is installed with block 40 in the right end lower part of fixed weight case.In this way, rotated forward by retarder 23 with balance motor or
Reversion, shaft coupling 24 drive leading screw 26 to rotate, and screw 29 drives mobile ballast box 28 to be moved left and right on balance arm 7, from
And balance the variation of polished rod load in pumping process.Four rolling 41 is installed in the inside of mobile ballast box 28, preferably
Play support and guiding role.When mobile ballast box 28 is moved to the both ends of balance arm 7, the tablet 35 on ballast box connects
When nearly up stroke inductive switch 34 or down stroke inductive switch 38, down stroke inductive switch or up stroke inductive switch send out limit
Stop signal controls relay by central processing unit, balancing, balance motor A.C. contactor controls subtracting with balance motor
Fast device 23 shuts down, and mobile ballast box 28 is made to stop movement；Up stroke inductive switch 34 and down stroke inductive switch 38 with
Tablet 35 cooperates, the position limitation protection for 28 left and right stroke of mobile ballast box；There are three crank-pins for setting on crank 9
Hole is used for adjusting stroke.Can be installed with by fastening bolt 32 in the outer end of fixed block 30 can block the lid of screw 29
Plate 31.The conventionally known material such as composite material coagulum can be used in fixed weight object 42, is played on the basis of meeting counterweight
Reduce the effect of manufacturing cost.Insurance bar 37 plays the role of protecting movable weight 36, and it is movable in the process of running to prevent
Clump weight 36 is fallen；Quantity coarse adjustment by adjusting the movable weight 36 of the moving counterweight intracavitary of movable case and fixed case is flat
Accurate adjustment is carried out in weighing apparatus, the position by changing mobile ballast box 28, by adjusting the quantity of movable weight 36 with change
Both the positions for becoming mobile ballast box 28 combine, and make oil recovery robot not only be easy to reach balance but also can keep balance.
As shown in Fig. 1, polished rod eye 1 includes hanging rope body, load transducer 17 and hanging rope；It is equipped on hanging rope body
Load transducer 17.
As shown in attached drawing 1,5, Digital Control cabinet 14 is installed on pedestal 12, it is fixed in Digital Control cabinet 14
Central processing unit, communication module, power module, display module, electricity quantity module, three phase electrical parameters harvester, control are installed
Panel, start-up and shut-down control relay, frequency converter, main motor frequency-changing AC contactor, main motor industrial frequency AC contactor, motor synthesis
Protector, balancing control relay, balance motor A.C. contactor and current transducer；The signal of load transducer 17 exports
End is electrically connected by the first signal input part of load transducer cable 18 and lower connecting cable 21 and central processing unit,
The second signal that the signal output end of stroke procedure measuring appliance passes through movable cable 19 and lower connecting cable 21 and central processing unit
Input terminal is electrically connected, and current transducer, electric current are equipped on the power input line of the retarder 23 with balance motor
The signal output end of transmitter and the third signal input part of central processing unit are electrically connected by conducting wire, down stroke induction
The signal output end of switch and up stroke inductive switch is by upper connecting cable 20, movable cable 19 and lower connecting cable 21 in
The fourth signal input terminal of central processor is electrically connected, the signal output of down stroke inductive switch and up stroke inductive switch
The signal input part that end controls relay by upper connecting cable 20, movable cable 19 and lower connecting cable 21 with balancing is electrically connected
It is connected together, the signal input part of the first signal output end and balancing the control relay of central processing unit is electrically connected by conducting wire
It is connected together, the signal output end of balancing control relay and the signal input part of balance motor AC contactor pass through conducting wire
It is electrically connected, the output end of balance motor A.C. contactor and the input terminal of balance motor are connected electrically in one by conducting wire
It rising, the output end of balance motor A.C. contactor and the signal input part of current transducer are electrically connected by conducting wire, in
The second signal output end of central processor and the signal input part of start-up and shut-down control relay are electrically connected by conducting wire, start and stop
The signal input part of the signal output end and main motor industrial frequency AC contactor that control relay is electrically connected by conducting wire,
The output end of main motor industrial frequency AC contactor and the input terminal of main motor 15 are electrically connected by conducting wire, start-up and shut-down control after
The signal output end of electric appliance and the signal input part of main motor frequency-changing AC contactor are electrically connected by conducting wire, main motor
The output end of frequency-changing AC contactor and the input terminal of main motor 15 are electrically connected by conducting wire.
As needed, square head 22 or six sides are fixed in the left end of 23 power output shaft of retarder with balance motor
Head is installed with crank support base 43 on fixed weight case 44；Or/and belt pulley is installed on pedestal 12 and is changed the outfit soon
It sets, the lower end of belt pulley fast replacing device is hinged on pedestal 12, and main electricity is installed on the upper surface of belt pulley fast replacing device
Machine 15 is hinged with supporting rod on holder 5, there is the free bearing for being correspondingly connected with supporting rod on walking beam 3；Or/and the left part in pedestal 12
It is installed with buffer unit 11；Or/and three phase electrical parameters harvester is electrical parameter dynamic equilibrium tester or Current Mutual Inductance
Device.In this way, having a power failure or the damage of retarder 23 with balance motor or service cable damage or hand balancing or maintenance activity
When, hand crank 10 or spanner manual rotation square head 22 or six square toes can be used, keep the retarder 23 with balance motor positive or anti-
To rotation, mobile ballast box 28 is set to be moved left and right on balance arm 7 by leading screw 26.Buffer unit 11 is sent out convenient for the present invention
After raw suspension point loses load, the left end impact attenuation device 11 of balance arm 7 discharges impact energy, effective protection retarder 8 and main electricity
The components such as machine 15.Load transducer 17, angular displacement sensor 16 and the retarder 23 with balance motor pass through load transducer line
Cable 18, movable cable 19, upper connecting cable 20 and lower connecting cable 21 and Digital Control cabinet 14 are by can quickly connect
Connector links together, the movable cable 19, upper connecting cable 20 especially between walking beam 3 and holder 5 and lower connecting cable 21
It is linked together by the connector that can quickly connect, and the connector that movable cable 19 is connect with lower connecting cable 21 is upward,
The bending damage for reducing butt joint, extends movable cable service life, and be conveniently replaceable.
Beneficial effects of the present invention：
1) present invention employs mobile automatic adjusting balance structures, by adjusting the moving counterweight of movable case and fixed case
The quantity coarse balance of the movable weight 36 of intracavitary, by changing the accurate adjustment in position of mobile ballast box 28, two
Person combines, and so that pumping unit is easier to realize the balanced adjustment under various operating modes needed for different polished rod loads, in production practice may be used
Balanced ratio is improved, pumping unit is protected and reduces production cost.
2) mobile ballast box 28 can be moved by hand crank 10, even if the damage of the retarder 23 with balance motor, band are put down
23 power supply circuit of the retarder damage of weighing apparatus motor, communicating interrupt remain to artificial hand balancing, so that pumping unit is continuing with, nothing
Security risk will not cause to stop well influence yield.
3）It is installed with buffer unit 11 in the left part of pedestal 12, the left end of balance arm 7 is hit slow after suspension point mistake carries
Flushing device 11 discharges impact energy, and the components such as effective protection retarder and main motor 15 solve beam-balanced pumping unit suspension point
Lose safeguard protection problem after carrying.
4）With two kinds of frequency conversion, power frequency methods of operation, when frequency conversion failure, can automatically switch to power frequency operation.
5）Real-time automatic measuring and calculating phase voltage, phase current, frequency, positive active energy, negative sense active energy etc. are electric
Parameter, can realize electricity ginseng Drawing of Curve and display, calculate the current equilibrium state of pumping unit according to electrical power and current data, provide
Balanced adjustment scheme, and it is balanced adjusting automatically, power-balance degree and current balance type degree are combined and both protect pumping unit
It realizes again energy saving.
6）Real-time automatic measuring polished rod load, displacement can realize that indicator card is drawn and stroke, jig frequency, maximum polished rod carry
The real-time display of the information such as lotus, minimum polished rod load, polished rod horsepower, the degree of filling according to pump automatically adjust jig frequency, pump can be improved
Degree of filling and pump efficiency, and analyze well deliverability, scheme taken out being proposed between qualified well, and carry out by imposing a condition
Control is taken out between automatic, further extends the well workover period.
7) data such as oil well pressure, temperature, oil well daily fluid production rate, effective head, oil well fluid density are acquired, in center
System efficiency of pumping well software for calculation is installed on processor or upper station control computer and Diagnosing The Faults of Sucker Rod Pumping System is special
Family's system, it is automatic to calculate analysis system efficiency of pumping well, surface efficiency, Downhole efficiency and pump efficiency, by rod-pumped well
Indicator card and parameters curve carry out superposition and side-by-side comparison's analysis, and pumping unit is made to have memory and self-learning function, realize
Pumping unit intelligentized control method and fault diagnosis and prediction alarm on the spot, improves safety in production and the system effectiveness of rod-pumped well.
8）Data remote and the control of remote switch well are realized by communication module, and seamless with field production management system
Access, can import data to oil field data library storage, and the available machine time of automatic meter record rod-pumped well, run time, acquisition are every
The time graph of parameter, frequency, power factor, electric energy be accumulative, system effectiveness, generates oil well production daily record and field production management
Required various data sheets and curve.
9）The computer network management for realizing rod-pumped well makes system efficiency of pumping well remote online monitor in real time
Become a reality with Automatic Optimal, improve system efficiency of pumping well, not only simplify operation, it is convenient and efficient, save it is artificial while
Achieve the purpose that energy-saving and emission-reduction, increase economic efficiency.
The above technical characteristic constitutes the embodiment of the present invention, can basis with stronger adaptability and implementation result
Actual needs increases and decreases non-essential technical characteristic, to meet the needs of different situations.
Claims (11)
1. a kind of power-balance digital automatic control oil pumping method, it is characterised in that including oil recovery robot, the oil recovery machine
People includes main motor, walking beam, balance arm, crank and polished rod eye；It is installed with balance arm in the left end of walking beam, is being balanced
The driving device for being separately installed with mobile ballast box on arm and mobile ballast box capable of being made to move left and right, in oil recovery robot
On stroke procedure measuring appliance is installed, load transducer is installed on polished rod eye；Further include central processing unit and three-phase
Electrical parameter harvester, the three phase electrical parameters harvester are mounted on energization input；This method carries out in the steps below：
The first step, in each stroke procedure, central processing unit calculates collected current value and voltage value, obtains
Average power content P in down strokeUnderWith the average power content P in upstrokeOn, and size comparison is carried out, using higher value as denominator
That is PGreatly, using smaller value as molecule, that is, PIt is small, then calculate power-balance angle value H2, that is, H2=PIt is small /PGreatly；
Second step obtains N number of power-balance angle value H2 by the number of strokes n times of setting, calculates N number of power-balance angle value H2
Power-balance degree average value H2 is obtained after art is averageIt is average, it is then compared processing, power-balance degree lower limit set value is A21,
It is A22 that power-balance degree, which adjusts target lower limit set value,；
After n times stroke, H2It is averageValue meets A21≤H2It is averageFor power-balance state, mobile ballast box is not adjusted；
After n times stroke, H2It is averageValue is less than A21 and PUnderLess than POnWhen be power under-balanced state, made at this time by driving device
Mobile ballast box is moved to the left, and makes power-balance degree average value H2It is averageReach A22≤H2It is average；
After n times stroke, H2It is averageValue is less than A21 and PUnderMore than POnWhen be power overbalance state, made at this time by driving device
Mobile ballast box moves right, and makes power-balance degree average value H2It is averageReach A22≤H2It is average；Wherein：
Stroke procedure measuring appliance, the collected data of three phase electrical parameters harvester are transferred to central processing unit respectively, center
Processor is handled collected current value in each stroke procedure, finds out the maximum current value in down stroke
ILower maxWith the maximum current value I in upstrokeUpper max, central processing unit calculates the i.e. H1 of current balance type angle value H1 of each stroke procedure
= ILower max / IUpper max；
N number of current balance type angle value H1 is obtained by setting number of strokes n times, after carrying out arithmetic average to N number of current balance type angle value H1
Obtain current balance type degree average value H1It is average, it is then compared processing, current balance type degree lower limit set value is A11, current balance type
It is A12 that degree, which adjusts target lower limit set value, and current balance type degree upper limit set value is B11, and current balance type degree adjusts target upper limit and sets
Definite value is B12；
After n times stroke, H1It is averageValue meets A11≤H1It is average≤ B11 is current balance type state, is not adjusted to mobile ballast box
Section；
After n times stroke, H1It is averageIt is electric current under-balanced state when less than A11, mobile ballast box is made by driving device at this time
It is moved to the left, makes current balance type degree average value H1It is averageReach A12≤H1It is average≤B12；
After n times stroke, H1It is averageIt is electric current overbalance state when more than B11, mobile ballast box is made by driving device at this time
It moves right, makes current balance type degree average value H1It is averageReach A12≤H1It is average≤B12；
Frequency converter is installed between main motor and energization input, it is outstanding for acquiring that load transducer is installed on polished rod eye
Point load value F is equipped with stroke procedure measuring appliance for acquiring suspension point shift value S in oil recovery robot；In each stroke
In the process, central processing unit is analyzed and is calculated ground according to collected polished rod load value F and suspension point shift value S and shown
Work(figure, ordinate are the coordinate of polished rod polished rod load value F in oil pumping process, and abscissa is polished rod suspension point in oil pumping process
The coordinate of shift value S, the stroke value S1 and down stroke that central processing unit is pumped according to surface dynamometer card acquisition upstroke pump effective
Then stroke value S2 calculates pump degree of filling H3, that is, H3=S2/S1；
N number of pump is obtained by the number of strokes n times of setting and is full of angle value H3, is obtained after carrying out arithmetic average full of angle value H3 to N number of pump
To pump degree of filling average value H3It is average, it is then compared processing, pump degree of filling lower limit set value is A31, and pump degree of filling adjusts mesh
Mark lower limit set value is A32, and pump degree of filling upper limit set value is B31；
After n times stroke, H3It is averageValue meets A31≤H3It is average≤ B31 is the appropriate state of jig frequency, is adjusted without jig frequency；
After n times stroke, H3It is averageWhen less than A31, it is the too fast state of jig frequency, main motor rotating speed is reduced by frequency converter at this time by is subtracted
Small jig frequency makes pump degree of filling average value H3It is averageReach A32≤H3It is average≤B31；
After n times stroke, H3It is averageWhen more than B31, it is the excessively slow state of jig frequency, main motor rotating speed is increased by frequency converter at this time by is increased
Big jig frequency makes pump degree of filling average value H3It is averageReach A32≤H3It is average≤B31；
It is 0.9 to 0.95, B11 values be 1.10 to 1.15, B12 values is 1.0 to 1.05 that A11 values, which are 0.8 to 0.85, A12 values,；A21
It is 0.80 to 0.90 that value, which is 0.5 to 0.6, A22 values,；It is 0.75 to 0.85, B31 values is 0.85 that A31 values, which are 0.5 to 0.6, A32 values,
To 0.95.
2. power-balance digital automatic control oil pumping method according to claim 1, it is characterised in that the stroke of setting
Times N is the number of setting；Or/and stroke procedure measuring appliance is the angular displacement sensor on walking beam or is fixed peace
On crank close to switch or be the suspension point displacement detecting sensor on polished rod eye；Or/and three phase electrical parameters are adopted
Packaging is set to electrical parameter dynamic equilibrium tester or current transformer.
3. a kind of oil recovery robot implementing power-balance digital automatic control oil pumping method as claimed in claim 1 or 2,
It is characterized by comprising main motor, retarder, crank, connecting rod, walking beam, balance arm, holder, horse head, pedestal, brake gear,
Polished rod eye and stroke procedure measuring appliance；Main motor, retarder, brake gear and holder are installed on pedestal, it can be up and down
The walking beam of swing is hinged on the top of holder by the walking beam bearing at middle part, and song is equipped on the power output shaft of retarder
Handle, the lower end of connecting rod and crank are hinged, and the upper end of connecting rod is hinged on the left part of walking beam, and the right end of walking beam is installed with
Horse head is equipped with polished rod eye on horse head, balance arm is installed in the left end of walking beam, and peace is fixed in the left part of balance arm
Equipped with fixed weight case, it is separately installed with mobile ballast box on balance arm and mobile ballast box can be made to move left and right
Driving device.
4. oil recovery robot according to claim 3, it is characterised in that driving device include the retarder with balance motor,
Leading screw and screw, the retarder with balance motor are fixedly mounted on balance arm, are installed in one end of balance arm
Lead screw shaft bearings are installed with leading screw asessory shaft bearing in the other end of balance arm, and the both ends of leading screw are separately mounted to silk
In thick stick bearing block and leading screw asessory shaft bearing, power output that one end of leading screw passes through shaft coupling and the retarder with balance motor
End is fixedly installed togather, and is equipped with screw on leading screw, and mobile ballast box is in saddle, and there is a straight slot at middle part, leading screw from
It is passed through in the straight slot of mobile ballast box, there are four fixed blocks for fixed installation on mobile ballast box, between four fixed blocks
Cross recess is formed, screw is mounted in cross recess and can float up and down, is installed in the outer end of fixed block
The cover board that screw can be blocked is provided with sliding rail on balance arm, idler wheel, idler wheel position is equipped on the inside of mobile ballast box
In on sliding rail；Or/and safety caging device is installed on balance arm and mobile ballast box, the safety caging device packet
Include tablet, down stroke inductive switch and up stroke inductive switch；Or/andMobile ballast box includes that movable case and activity are matched
Pouring weight,It is fixed with partition board in movable case and movable case is divided into fixed weight chamber and moving counterweight chamber, in fixed weight intracavitary
Filled with fixed weight object, movable weight is installed in moving counterweight chamber, work can be blocked by being installed on movable case
The insurance bar of dynamic clump weight；Or/and fixed weight case includes fixed case and movable weight, be fixed in fixed case every
Fixed case is simultaneously divided into fixed weight chamber and moving counterweight chamber by plate, fixed weight object is filled in fixed weight intracavitary, in activity
Movable weight is installed in counterweight chamber, the insurance bar that can block movable weight is installed on fixed case.
5. oil recovery robot according to claim 3 or 4, it is characterised in that polished rod eye includes hanging rope body, load sensing
Device and hanging rope；Load transducer is installed on hanging rope body.
6. oil recovery robot according to claim 3 or 4, it is characterised in that be installed with Digital Control on pedestal
Cabinet, be installed in Digital Control cabinet central processing unit, communication module, power module, display module, electricity quantity module,
Three phase electrical parameters harvester, control panel, start-up and shut-down control relay, frequency converter, main motor frequency-changing AC contactor, main motor
Industrial frequency AC contactor, comprehensive protector of motor, balancing control relay, balance motor A.C. contactor and electric current pick-up
Device；The first signal that the signal output end of load transducer passes through load transducer cable and lower connecting cable and central processing unit
Input terminal is electrically connected, and the signal output end of stroke procedure measuring appliance passes through movable cable and lower connecting cable and centre
The second signal input terminal of reason device is electrically connected, and electric current is equipped on the power input line of the retarder with balance motor
Transmitter, the signal output end of current transducer and the third signal input part of central processing unit are connected electrically in one by conducting wire
It rises, the signal output end of down stroke inductive switch and up stroke inductive switch passes through upper connecting cable, movable cable and lower connection
The fourth signal input terminal of cable and central processing unit is electrically connected, down stroke inductive switch and up stroke inductive switch
Signal output end controls the signal input part electricity of relay by upper connecting cable, movable cable and lower connecting cable and balancing
It links together, the signal input part of the first signal output end and balancing the control relay of central processing unit passes through conducting wire electricity
It links together, balancing controls the signal output end of relay and the signal input part of balance motor AC contactor by leading
Line is electrically connected, and the output end of balance motor A.C. contactor and the input terminal of balance motor are connected electrically in one by conducting wire
It rising, the output end of balance motor A.C. contactor and the signal input part of current transducer are electrically connected by conducting wire, in
The second signal output end of central processor and the signal input part of start-up and shut-down control relay are electrically connected by conducting wire, start and stop
The signal input part of the signal output end and main motor industrial frequency AC contactor that control relay is electrically connected by conducting wire,
The output end of main motor industrial frequency AC contactor and the input terminal of main motor are electrically connected by conducting wire, start-up and shut-down control relay
The signal output end of device and the signal input part of main motor frequency-changing AC contactor are electrically connected by conducting wire, and main motor becomes
The output end of frequency A.C. contactor and the input terminal of main motor are electrically connected by conducting wire.
7. oil recovery robot according to claim 5, it is characterised in that Digital Control cabinet is installed on pedestal,
Central processing unit, communication module, power module, display module, electricity quantity module, three-phase electricity are installed in Digital Control cabinet
Parameter acquisition devices, control panel, start-up and shut-down control relay, frequency converter, main motor frequency-changing AC contactor, main motor power frequency are handed over
Flow contactor, comprehensive protector of motor, balancing control relay, balance motor A.C. contactor and current transducer；Load
The first signal input part that the signal output end of sensor passes through load transducer cable and lower connecting cable and central processing unit
It is electrically connected, the signal output end of stroke procedure measuring appliance passes through movable cable and lower connecting cable and central processing unit
Second signal input terminal is electrically connected, and electric current pick-up is equipped on the power input line of the retarder with balance motor
Device, the signal output end of current transducer and the third signal input part of central processing unit are electrically connected by conducting wire, under
The signal output end of stroke inductive switch and up stroke inductive switch by upper connecting cable, movable cable and lower connecting cable with
The fourth signal input terminal of central processing unit is electrically connected, and the signal of down stroke inductive switch and up stroke inductive switch is defeated
The signal input part that outlet controls relay by upper connecting cable, movable cable and lower connecting cable with balancing is connected electrically in
Together, the signal input part of the first signal output end of central processing unit and balancing control relay is connected electrically in by conducting wire
Together, the signal input part of the signal output end of balancing control relay and balance motor AC contactor is electrically connected by conducting wire
It is connected together, the output end of balance motor A.C. contactor and the input terminal of balance motor are electrically connected by conducting wire, are put down
The output end of weighing apparatus motor AC contactor and the signal input part of current transducer are electrically connected by conducting wire, central processing
The second signal output end of device and the signal input part of start-up and shut-down control relay are electrically connected by conducting wire, start-up and shut-down control after
The signal output end of electric appliance and the signal input part of main motor industrial frequency AC contactor are electrically connected by conducting wire, main motor
The output end of industrial frequency AC contactor and the input terminal of main motor are electrically connected by conducting wire, the letter of start-up and shut-down control relay
The signal input part of number output end and main motor frequency-changing AC contactor is electrically connected by conducting wire, main motor frequency-changing AC
The output end of contactor and the input terminal of main motor are electrically connected by conducting wire.
8. oil recovery robot according to claim 3 or 4, it is characterised in that the reducer power output shaft with balance motor
Left end be fixed with square head or six square toes, crank support base is installed on fixed weight case；Or/and on pedestal
Belt pulley fast replacing device is installed, the lower end of belt pulley fast replacing device is hinged on pedestal, the upper surface of belt pulley fast replacing device
On be installed with main motor, be hinged with supporting rod on holder, there is the free bearing for being correspondingly connected with supporting rod on walking beam；Or/and
The left part of pedestal is installed with buffer unit.
9. oil recovery robot according to claim 5, it is characterised in that the reducer power output shaft with balance motor
Left end is fixed with square head or six square toes, and crank support base is installed on fixed weight case；Or/and pacify on pedestal
Equipped with belt pulley fast replacing device, the lower end of belt pulley fast replacing device is hinged on pedestal, on the upper surface of belt pulley fast replacing device
It is installed with main motor, supporting rod is hinged on holder, there is the free bearing for being correspondingly connected with supporting rod on walking beam；Or/and the bottom of at
The left part of seat is installed with buffer unit.
10. oil recovery robot according to claim 6, it is characterised in that the reducer power output shaft with balance motor
Left end is fixed with square head or six square toes, and crank support base is installed on fixed weight case；Or/and pacify on pedestal
Equipped with belt pulley fast replacing device, the lower end of belt pulley fast replacing device is hinged on pedestal, on the upper surface of belt pulley fast replacing device
It is installed with main motor, supporting rod is hinged on holder, there is the free bearing for being correspondingly connected with supporting rod on walking beam；Or/and the bottom of at
The left part of seat is installed with buffer unit.
11. oil recovery robot according to claim 7, it is characterised in that the reducer power output shaft with balance motor
Left end is fixed with square head or six square toes, and crank support base is installed on fixed weight case；Or/and pacify on pedestal
Equipped with belt pulley fast replacing device, the lower end of belt pulley fast replacing device is hinged on pedestal, on the upper surface of belt pulley fast replacing device
It is installed with main motor, supporting rod is hinged on holder, there is the free bearing for being correspondingly connected with supporting rod on walking beam；Or/and the bottom of at
The left part of seat is installed with buffer unit.
Priority Applications (2)
| 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 |
| PCT/CN2015/100031 WO2016107591A1 (en) | 2014-12-31 | 2015-12-31 | Method for power-balanced digitized automatically controlled oil pumping and oil-pumping robot |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
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| CN104612631A CN104612631A (en) | 2015-05-13 |
| CN104612631B true CN104612631B (en) | 2018-07-27 |
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|---|---|---|---|
| CN201410852567.1A Active CN104612631B (en) | 2014-12-31 | 2014-12-31 | Power-balance digital automatic control oil pumping method and oil recovery robot |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104612631B (en) |
| WO (1) | WO2016107591A1 (en) |
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| CN104612631A (en) | 2015-05-13 |
| WO2016107591A1 (en) | 2016-07-07 |
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