CN107725031A - A kind of indicator card harvester and method based on electrical power and counterweight - Google Patents
A kind of indicator card harvester and method based on electrical power and counterweight Download PDFInfo
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- CN107725031A CN107725031A CN201710935827.5A CN201710935827A CN107725031A CN 107725031 A CN107725031 A CN 107725031A CN 201710935827 A CN201710935827 A CN 201710935827A CN 107725031 A CN107725031 A CN 107725031A
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- 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
- E21B47/00—Survey of boreholes or wells
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Abstract
The present invention relates to a kind of indicator card harvester and method based on electrical power and counterweight, it is installed in control system for oil-pumping unit, including electrical parameter acquisition module, communication module, dead point identification module and industrial computer, wherein：Electrical parameter acquisition module, is filled and power by the running current of primary detecting element collecting device, voltage；Dead point identification module, the bottom dead centre in measurement oil pumping machine crank motion；Communication module, the data transfer that electrical parameter acquisition module, dead point identification module are collected is to industrial computer, and the instruction for receiving industrial computer is sent to industrial computer power control module；Industrial computer, the data of electrical parameter acquisition module upload are received by communication module, run indicator card computational algorithm, output obtains indicator card.The present invention replaces conventional sensors to measure using calculating, without in the position installed load such as horse head and walking beam and displacement transducer, increasing the service life, reducing the difficulty and risk of operation, improve the maintainability of equipment.
Description
Technical field
The present invention relates to a kind of rod-pumped well comprehensive application technology, specially a kind of showing based on electrical power and counterweight
Work(figure harvester and method.
Background technology
Polished rod diagram is a kind of closed figure using load and displacement as coordinate.In oilfield production, the figure is commonly used
In judging the working condition of single oil well, calculate oil production and judge dynamic liquid level etc., more mouthfuls of oil wells can also be used
Indicator card is analyzed the fluid supply capacity of block.Safety and stability production of the indicator card to oil field has larger meaning, is one
The indispensable field data of kind.
At present, the method for commonly using measurement indicator card is required for installing equipment on walking beam or suspension point, to measure suspension point
Position and the change of load.Not only cost is higher for this kind equipment, and there is also potential safety hazard in installation process.It is in addition, this kind of
Sensor is generally transmitted using wired power supply and signal, even with active and transmission of wireless signals mode, it is also desirable to periodically
Replacing sensor battery is given, significantly increases the workload of later maintenance, also increases the cost used.
The content of the invention
Increase equipment later maintenance workload and presence in use for indicator card sensor in the prior art
The drawbacks such as potential safety hazard, the problem to be solved in the present invention, which is to provide one kind, can solve indicator card sensor installation potential safety hazard with after
Phase indicator card harvester and method difficult in maintenance based on electrical power and counterweight.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of indicator card harvester based on electrical power and counterweight of the present invention, is installed on control system for oil-pumping unit
In, including electrical parameter acquisition module, communication module, dead point identification module and industrial computer, wherein：
Electrical parameter acquisition module, is filled and power by the running current of primary detecting element collecting device, voltage；
Dead point identification module, the bottom dead centre in measurement oil pumping machine crank motion；
Communication module, the data transfer that electrical parameter acquisition module, dead point identification module are collected to industrial computer, and
The instruction for receiving industrial computer is sent to industrial computer power control module；
Industrial computer, the data of electrical parameter acquisition module upload are received by communication module, operation indicator card, which calculates, to be calculated
Method, output obtain indicator card.
Electrical parameter acquisition module includes voltage transformer, current transformer, first and second amplifying circuit, first and second active low
Bandpass filter circuit, first and second active full wave rectification circuit and first and second rc filter circuit, wherein, voltage transformer collection
The power network arrived then voltage signal successively through the first amplifying circuit, the first active low-pass filter circuit, the first active full wave rectified current
Road and the first rc filter circuit are transmitted to output interface；The power network that current transformer collects then current signal successively through
Two amplifying circuits, the second active low-pass filter circuit, the second active full wave rectification circuit and the transmission of the second rc filter circuit
To output interface；Node and second between the first active low-pass filter circuit, the first active full wave rectification circuit is active low
Bandpass filter circuit, the second active full wave rectification circuit node between be provided with phase difference detecting circuit.
Also there is signal wireless transmitter module, indicator card is shown by wired connection using equipment, or passes through signal
Wireless transmitter module, indicator card is sent to remote terminal using the mode of wireless transmission.
Communication module includes MCU module, RS232 communicating circuits, RS485 communicating circuits, ADC input interfaces, pulse capture
Input interface, Phototube Coupling input interface and Phototube Coupling output interface and W5500 network communication circuits, wherein ADC numbers
The electrical parameter of electrical parameter acquisition module collection is received according to input interface, pulse capture input interface and Phototube Coupling input interface
Signal is transmitted to MCU module, MCU module to be connected by Phototube Coupling output interface with host computer；Other interfaces of MCU module lead to
RS232 communicating circuits, RS485 communicating circuits and W5500 network communications circuit is crossed to be connected with host computer progress both-way communication.
Dead point identification module uses proximity switch, and proximity switch is arranged on crank.
The acquisition method of the indicator card harvester based on electrical power and counterweight of the invention, it is characterised in that including with
Lower step：
1) acquisition is sent to parameter collection module, parameter collection module by communication module timing by industrial computer
Acquisition state is entered by holding state；
2) using the period of motion for the dead point identification module collection crank being arranged on crank, the lower dead of crank-motion is determined
Point, and the sampling time and frequency of electrical parameter acquisition module are controlled；
3) after the electrical parameter of electrical parameter acquisition module upload is received to industrial computer, suspension point is calculated first one
Displacement law in the individual cycle, polished rod load is then obtained according to electrical parameter and crank counterweight, it is finally that load and displacement is relative
Should, indicator card can be obtained.
The sampling time of electrical parameter acquisition module and frequency are controlled in step 2) for：
201) when crank rotates to bottom dead centre for the first time and triggers dead point identification module, proximity switch sends pulse signal extremely
Electrical parameter acquisition module, electrical parameter acquisition module start timing；
202) when crank rotates to bottom dead centre for the second time, proximity switch sends pulse signal a to electrical parameter and adopted again
Collect module, now electrical parameter acquisition module determines sampling time and sample frequency according to the interval of two subpulses；
203) electrical parameter acquisition module and will collect jig frequency according to the sample frequency calculated to being acquired
Electrical parameter is stored into the memory of electrical parameter acquisition module.
In step 3), displacement law of the suspension point in a cycle is calculated, including：
301) the mechanical structure data of oil well are collected, including after throw of crankshaft, length of connecting rod, walking beam before arm lengths, walking beam
Arm lengths, base shaft length, Imbalance in weight weight, balance weight weight, balance weight centroidal distance, crank weight, crank centroidal distance, base shaft
Projected length；
302) counted according to oil pumper double leval jib geometry, crank angular displacement from 12 o'clock position, clockwise for just；
Reference crank angle, connecting rod reference angle, walking beam reference angle OO1To refer to, counterclockwise for just；The horse head direction of motion is hung down
Directly it is taken as just, parameters described below being calculated by below equation upwards：
Reference crank angle：
Connecting rod reference angle：θ2=2 π-θ+α
Wherein, R is throw of crankshaft；P is length of connecting rod；C is arm lengths after walking beam；K is base shaft length；I projects for base shaft
Length；L is the distance that crank-pin axle center supports center to walking beam；β is that base shaft supports the line of centres to crank-pin axle center to walking beam
Angle；χ is that crank-pin axle center to walking beam supports the line of centres to the angle of walking beam postbrachium；φ is folder of the base shaft to walking beam postbrachium
Angle；θ be 12 o'clock direction to throw of crankshaft R angle；
By above-mentioned angle, according to walking beam forearm A and angle, θ4Calculate the movement locus of suspension point：
Sc=A θ4
Wherein ScFor horse head suspension point displacement, A is walking beam forearm；
303) polished rod load is calculated by below equation：
Wherein TnFor crank axle net moment of torsion, W is polished rod load, and B is Imbalance in weight weight, and Q is balance weight weight, and V is balance
Block centroidal distance, q are crank weight, and r is crank centroidal distance, and θ is crank angle,For torque factor；
In above formula, balance weight weight Q, balance weight centroidal distance V, crank weight q, crank centroidal distance r and balance weight center of gravity
Distance V is determined by oil machinery parameter；
304) adjustment of sequential is carried out to the electrical parameter that is collected to electrical parameter acquisition module, during by displacement time and load
Between it is corresponding, it is using polished rod load as ordinate, the order of load sample and displacement sample is corresponding using displacement as abscissa, it is complete
Into calculating indicator card.
Crank axle net moment of torsion T in step 303)nCalculated by below equation：
Tn=Tno×ηbelt×ηgb
Wherein PmotorFor the instantaneous power of motor, rot is motor speed, ibeltFor diameter pulley and motor wheel diameter it
Than igbFor reduction box gearratio, ηbeltFor Belt Transmission Efficiency, ηgbFor reduction box transmission efficiency；
Motor speed is calculated by following formula：
Rot=igb×ibelt×N
Wherein N is jig frequency.
Torque factor in step 303)Calculated by below equation：
It is rightHandled；
Wherein, R is throw of crankshaft, and C is arm lengths after walking beam；A is walking beam forearm；K is base shaft length；P is connecting rod
Length；α is reference crank angle；β 1 is angle of the connecting rod to walking beam postbrachium；θ 2 is angle of the throw of crankshaft to L；For K to C's
Angle.
The invention has the advantages that and advantage：
1. the method and apparatus provided by the invention based on electrical parameter generation indicator card, according to electric in the oil pumper course of work
Acc power is analyzed with moment of torsion caused by crank and parallel motion rule, is realized using electrical parameter to polished rod diagram
Calculated, replace conventional sensors to measure using calculating, without in the position installed load such as horse head and walking beam and displacement sensing
Device, not only increase the service life, and reduce the difficulty and risk of operation, while also improve the maintainability of equipment, very greatly
The production cost in oil field is reduced in degree.
2. the present invention uses independently developed electrical parameter acquisition module, power of motor, the mode of connection are calculated using two watts of methods
Fast, and in industrial computer power supply detection control module is increased, it is ensured that the stability of system；The indicator card calculated can
It is collected at the scene by mode derived from access, data, mobile device can also be passed through by modes such as data remotes
APP, short message, computer carry out long range acquisition, and collection process is convenient and swift, can be achieved to monitor the state of oil well in real time.
Brief description of the drawings
Fig. 1 is structural topology figure of the present invention；
Fig. 2 is flow chart of the present invention；
Fig. 3 is four-bar linkage structure schematic diagram of the present invention；
Fig. 4 is electrical parameter acquisition module structure chart of the present invention；
Fig. 5 is communication module structure chart of the present invention；
Fig. 6 is the indicator card legend obtained using the inventive method.
Embodiment
With reference to Figure of description, the present invention is further elaborated.
As shown in figure 1, a kind of indicator card harvester based on electrical power and counterweight of the present invention, including electrical parameter are adopted
Collect module, communication module, dead point identification module, industrial computer and industrial computer power control module, wherein：
Electrical parameter acquisition module, is filled and power by the running current of primary detecting element collecting device, voltage；
Dead point identification module, the bottom dead centre in measurement oil pumping machine crank motion；
Communication module, the data transfer that electrical parameter acquisition module, dead point identification module are collected to industrial computer, and
The instruction for receiving industrial computer is sent to industrial computer power control module；
Industrial computer, the data of electrical parameter acquisition module upload are received by communication module, operation indicator card, which calculates, to be calculated
Method, output obtain indicator card；
Industrial computer power control module, according to the communication condition between industrial computer and communication module, to industry
Computer operating state is monitored, and power-down rebooting is performed when deadlock situation occurs in industrial computer.
The present invention also has signal wireless transmitter module, and indicator card is shown by wired connection using equipment, or logical
Signal wireless transmitter module is crossed, indicator card is sent to remote terminal using the mode of wireless transmission.
In the present embodiment, dead point identification module uses proximity switch, and proximity switch is arranged on crank；It is as shown in figure 4, electric
Parameter collection module includes voltage transformer, current transformer, first and second amplifying circuit, first and second active low-pass filter electricity
Road, first and second active full wave rectification circuit and first and second rc filter circuit, wherein, the power network that voltage transformer collects
Then voltage signal is successively through the first amplifying circuit, the first active low-pass filter circuit, the first active full wave rectification circuit and
One rc filter circuit is transmitted to output interface；Then current signal is electric through the second amplification successively for the power network that current transformer collects
Road, the second active low-pass filter circuit, the second active full wave rectification circuit and the second rc filter circuit are transmitted to output and connect
Mouthful；Node and the second active low-pass filter electricity between the first active low-pass filter circuit, the first active full wave rectification circuit
Road, the second active full wave rectification circuit node between be provided with phase difference detecting circuit.
Input and connect as shown in figure 5, communication module includes MCU module, RS232 communicating circuits, RS485 communicating circuits, ADC
Mouth, pulse capture input interface, Phototube Coupling input interface and Phototube Coupling output interface and W5500 network communications electricity
Road, wherein adc data input interface, pulse capture input interface and Phototube Coupling input interface receive electrical parameter acquisition module
The electrical parameter signal of collection is transmitted to MCU module, MCU module to be connected by Phototube Coupling output interface with host computer；MCU module
Other interfaces pass through RS232 communicating circuits, RS485 communicating circuits and W5500 network communications circuit and host computer carry out it is double
Connected to communication.In the present embodiment, can also have UART communicating circuits, be spare interface, for connecting other equipment.
Present invention employs independently developed electrical parameter acquisition module, and power of motor, the mode of connection are calculated using two watts of methods
Fast；And add power supply detection control module to industrial computer, it is ensured that the stability of system；The indicator card calculated
It can be at the scene collected by mode derived from access, data, mobile device can also be passed through by modes such as data remotes
APP, short message, computer carry out long range acquisition, and collection process is convenient and swift, can be achieved to monitor the state of oil well in real time.
As shown in Fig. 2 the acquisition method of the indicator card harvester of the invention based on electrical power and counterweight, including with
Lower step：
Step 1) sends acquisition to parameter collection module, parameter acquisition by industrial computer by communication module timing
Module enters acquisition state by holding state；
The sampling time of electrical parameter acquisition module and frequency are calculated as in step 2)：
201) when crank rotates to bottom dead centre for the first time, (minimum point i.e. in oil well crank running, passes through sensor
Identify the position) and dead point identification module is triggered, proximity switch sends pulse signal to electrical parameter acquisition module, electrical parameter collection
Module starts timing, records moment t1；
202) when crank rotates to bottom dead centre for the second time, proximity switch sends pulse signal a to electrical parameter and adopted again
Collect module, now electrical parameter acquisition module records moment t2, according to the interval t of two subpulses2-t1Determine the sampling time and adopt
Sample frequency；
203) electrical parameter acquisition module is acquired according to the sample frequency calculated to electrical parameter, and will collect one
The electrical parameter of jig frequency is stored into the memory of electrical parameter acquisition module；
In this step, electrical parameter acquisition module is acquired according to the sample frequency calculated to electrical parameter, data acquisition
Mode carry out as the following formula；In a stroke, the indicator card of the invention to be calculated is made up of 300 points, therefore, one
Electrical parameter in stroke should also include 300 points；And in order to avoid influence caused by noise and abnormity point, each point
Tried to achieve, be shown below by the average value of 100 points：
Wherein, xiFor i-th of electrical parameter in a stroke, njFor xiElectrical parameter near point, i are electricity ginseng in a stroke
Number numbering, j xiElectrical parameter numbering near point；
204) due to the bottom dead centre that displacement starting point is horse head, now crank is located at top dead-centre, but the collection of electrical parameter
It is since the bottom dead centre of crank, displacement has the half stroke time difference with load, and therefore, the electrical parameter collected is carried out
The adjustment of sequential.
205) electrical parameter is sent in industrial computer by communication module.
In step 3), displacement law of the suspension point in a cycle is calculated, including：
301) the mechanical structure data of oil well are collected, including after throw of crankshaft, length of connecting rod, walking beam before arm lengths, walking beam
Arm lengths, base shaft length, Imbalance in weight weight, balance weight weight, balance weight centroidal distance, crank weight, crank centroidal distance, base shaft
Projected length；
302) according to oil pumper double leval jib geometry, as shown in figure 3, crank angular displacement is counted from 12 o'clock position, it is suitable
Hour hands is just；Reference crank angle, connecting rod reference angle, walking beam reference angle OO1 are reference, counterclockwise for just；Horse head
The direction of motion is taken as just, parameters described below being calculated by below equation vertically upward：
Reference crank angle：
Connecting rod reference angle：θ2=2 π-θ+α
Wherein, R is throw of crankshaft, m；P is length of connecting rod, m；C be walking beam after arm lengths, m；K is base shaft length, m；I is
Base shaft projected length, m；L supports the distance at center, m for crank-pin axle center to walking beam；β is base shaft to crank-pin axle center to walking beam
Support the angle of the line of centres, rad；χ is angle of the crank-pin axle center to the walking beam support line of centres to arm lengths C after walking beam,
rad；φ is base shaft to the angle of walking beam postbrachium, rad；θ be 12 o'clock direction to throw of crankshaft R angle, rad；
By above-mentioned angle, the movement locus of suspension point is calculated according to walking beam forearm A and angle, θ 4：
Sc=A θ4
Wherein Sc is horse head suspension point displacement, unit m；A is walking beam forearm, unit m；
303) polished rod load is calculated by below equation：
Wherein TnFor crank axle net moment of torsion, units/kg m；W is polished rod load, units/kg；B is Imbalance in weight weight, single
Position kg；Q is balance weight weight, units/kg；R is balance weight centroidal distance, unit m；Q is crank weight, units/kg；R is crank center of gravity
Distance, unit m；θ is crank angle, unit °；For torque factor, dimensionless；
In above formula, balance weight weight Q, balance weight centroidal distance R, crank weight q, crank centroidal distance r and balance weight center of gravity
Distance R is determined by oil machinery parameter (being determined according to oil machinery drawing)；
Crank axle net moment of torsion T in step 303)nCalculated by below equation：
Tn=Tno×ηbelt×ηgb
Wherein PmotorFor the instantaneous power of motor, rot is motor speed, ibeltFor diameter pulley and motor wheel diameter it
Than igbFor reduction box gearratio, ηbeltFor Belt Transmission Efficiency, ηgbFor reduction box transmission efficiency；
Because oil well uses counterbalance design, therefore motor possesses conventional machine revolutional slip in whole stroke, i.e. revolutional slip is small
In 5%, it can be considered that rotating speed is basically unchanged, then it is assumed that crank rolling velocity is equal to constant, and motor speed can be calculated by following formula：
Rot=igb×ibelt×N
Wherein N is jig frequency.
The power of motor is calculated in step 303) using two watts of methods：
Pmotor=P1+P2
Wherein UabThe phase voltage between ab two-phases, unit V；UcbThe phase voltage between cb two-phases, unit V；IabFor ab two-phases
Between phase current, unit A；IcbThe phase current between cb two-phases, unit A；For the power factor of ab phases,For
The power factor of cb phases.
Torque factor in step 303)Calculated by below equation：
Due toIt is a kind of sinusoidal function, it has two zero points, and is included in the formula by calculating polished rod load WInverse, so need pairHandled：
Wherein, R is throw of crankshaft, and C is arm lengths after walking beam, m；A is walking beam forearm, m；K is base shaft length, m；P
For length of connecting rod, m；α is reference crank angle, rad；β1Angle for connecting rod to walking beam postbrachium, rad；θ2For throw of crankshaft R to song
The handle bearing pin heart supports the angle of the line of centres, rad to walking beam；φ is base shaft to the angle of walking beam postbrachium, rad；
After this treatment it is possible to prevente effectively fromThe problem of fluctuation of zero crossings polished rod load is excessive.
Crank angle θ can be calculated by following formula in step 303)：
Wherein t is the time；N is jig frequency.
Step 4)：The indicator card collected by the above method can be shown by wired connection using equipment, also may be used
So that by signal wireless transmitter module, indicator card is sent into remote terminal, including SMS, mobile device APP, computer
Deng.
As shown in fig. 6, the indicator card legend obtained for the present embodiment by above step.
Claims (10)
1. a kind of indicator card harvester based on electrical power and counterweight, is installed in control system for oil-pumping unit, its feature
It is：Including electrical parameter acquisition module, communication module, dead point identification module and industrial computer, wherein：
Electrical parameter acquisition module, is filled and power by the running current of primary detecting element collecting device, voltage；
Dead point identification module, the bottom dead centre in measurement oil pumping machine crank motion；
Communication module, the data transfer that electrical parameter acquisition module, dead point identification module are collected receive to industrial computer
The instruction of industrial computer is sent to industrial computer power control module；
Industrial computer, the data of electrical parameter acquisition module upload are received by communication module, run indicator card computational algorithm, it is defeated
Go out to obtain indicator card.
2. the indicator card harvester according to claim 1 based on electrical power and counterweight, it is characterised in that：Electricity ginseng
Number acquisition modules include voltage transformer, current transformer, first and second amplifying circuit, first and second active low-pass filter circuit,
First and second active full wave rectification circuit and first and second rc filter circuit, wherein, the power network that voltage transformer collects is then
Voltage signal is successively through the first amplifying circuit, the first active low-pass filter circuit, the first active full wave rectification circuit and first
Rc filter circuit is transmitted to output interface；Then current signal is electric through the second amplification successively for the power network that current transformer collects
Road, the second active low-pass filter circuit, the second active full wave rectification circuit and the second rc filter circuit are transmitted to output and connect
Mouthful；Node and the second active low-pass filter electricity between the first active low-pass filter circuit, the first active full wave rectification circuit
Road, the second active full wave rectification circuit node between be provided with phase difference detecting circuit.
3. the indicator card harvester according to claim 1 based on electrical power and counterweight, it is characterised in that：Also have
There is signal wireless transmitter module, indicator card is shown by wired connection using equipment, or by signal wireless transmitter module,
Indicator card is sent to remote terminal using the mode of wireless transmission.
4. the indicator card harvester according to claim 1 based on electrical power and counterweight, it is characterised in that：Communication
Module includes MCU module, RS232 communicating circuits, RS485 communicating circuits, ADC input interfaces, pulse capture input interface, photoelectricity
Isolation input interface and Phototube Coupling output interface and W5500 network communication circuits, wherein adc data input interface, arteries and veins
The electrical parameter signal that punching capture input interface and Phototube Coupling input interface receive the collection of electrical parameter acquisition module is transmitted to MCU
Module, MCU module are connected by Phototube Coupling output interface with host computer；Other interfaces of MCU module communicate electricity by RS232
Road, RS485 communicating circuits and W5500 network communications circuit carry out both-way communication with host computer and are connected.
5. the indicator card harvester according to claim 1 based on electrical power and counterweight, it is characterised in that：Dead point
Identification module uses proximity switch, and proximity switch is arranged on crank.
6. the acquisition method of the indicator card harvester according to claim 1 based on electrical power and counterweight, it is special
Sign is to comprise the following steps：
1) acquisition is sent to parameter collection module by communication module timing by industrial computer, parameter collection module is by treating
Machine state enters acquisition state；
2) period of motion of crank is gathered using the dead point identification module being arranged on crank, determines the bottom dead centre of crank-motion,
And the sampling time and frequency of electrical parameter acquisition module are controlled；
3) after the electrical parameter of electrical parameter acquisition module upload is received to industrial computer, suspension point is calculated first in a week
Displacement law in phase, polished rod load is then obtained according to electrical parameter and crank counterweight, it is finally that load and displacement is corresponding, both
Indicator card can be obtained.
7. the acquisition method of the indicator card harvester according to claim 6 based on electrical power and counterweight, it is special
Sign be in step 2) to be controlled the sampling time of electrical parameter acquisition module and frequency for：
201) when crank rotates to bottom dead centre for the first time and triggers dead point identification module, proximity switch, which sends pulse signal to electricity, joins
Number acquisition module, electrical parameter acquisition module start timing；
202) when crank rotates to bottom dead centre for the second time, proximity switch sends a pulse signal to electrical parameter and gathers mould again
Block, now electrical parameter acquisition module sampling time and sample frequency are determined according to the interval of two subpulses；
203) electrical parameter acquisition module is joined according to the sample frequency calculated to being acquired, and by the electricity for collecting a jig frequency
Number storage is into the memory of electrical parameter acquisition module.
8. the acquisition method of the indicator card harvester according to claim 6 based on electrical power and counterweight, it is special
Sign is in step 3), calculates displacement law of the suspension point in a cycle, including：
301) the mechanical structure data of oil well, including arm lengths, walking beam forearm length after throw of crankshaft, length of connecting rod, walking beam are collected
Degree, base shaft length, Imbalance in weight weight, balance weight weight, balance weight centroidal distance, crank weight, the projection of crank centroidal distance, base shaft
Length；
302) counted according to oil pumper double leval jib geometry, crank angular displacement from 12 o'clock position, clockwise for just；Crank
Reference angle, connecting rod reference angle, walking beam reference angle OO1To refer to, counterclockwise for just；The horse head direction of motion vertically to
On be taken as just, parameters described below is calculated by below equation：
Reference crank angle：
Connecting rod reference angle：θ2=2 π-θ+α
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<mrow>
<msup>
<mi>R</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<msup>
<mi>K</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<mn>2</mn>
<msub>
<mi>RKcos&theta;</mi>
<mn>2</mn>
</msub>
</mrow>
</msqrt>
</mrow>
<mrow>
<mi>&beta;</mi>
<mo>=</mo>
<msup>
<mi>sin</mi>
<mrow>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msup>
<mrow>
<mo>(</mo>
<mfrac>
<mi>R</mi>
<mi>L</mi>
</mfrac>
<msub>
<mi>sin&theta;</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>x</mi>
<mo>=</mo>
<msup>
<mi>cos</mi>
<mrow>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msup>
<msqrt>
<mfrac>
<mrow>
<msup>
<mi>C</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<msup>
<mi>L</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<msup>
<mi>P</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<mi>C</mi>
<mi>L</mi>
</mrow>
</mfrac>
</msqrt>
</mrow>
Wherein, R is throw of crankshaft；P is length of connecting rod；C is arm lengths after walking beam；K is base shaft length；I is base shaft projected length；
L is the distance that crank-pin axle center supports center to walking beam；β is the folder that base shaft supports the line of centres to crank-pin axle center to walking beam
Angle；χ is that crank-pin axle center to walking beam supports the line of centres to the angle of walking beam postbrachium；φ is angle of the base shaft to walking beam postbrachium；θ
For 12 o'clock direction to throw of crankshaft R angle；
By above-mentioned angle, according to walking beam forearm A and angle, θ4Calculate the movement locus of suspension point：
Sc=A θ4
Wherein ScFor horse head suspension point displacement, A is walking beam forearm；
303) polished rod load is calculated by below equation：
<mrow>
<mi>W</mi>
<mo>=</mo>
<mfrac>
<mn>1</mn>
<mover>
<mrow>
<mi>T</mi>
<mi>F</mi>
</mrow>
<mo>&OverBar;</mo>
</mover>
</mfrac>
<mo>&lsqb;</mo>
<mrow>
<mo>(</mo>
<mi>Q</mi>
<mi>V</mi>
<mo>+</mo>
<mi>q</mi>
<mi>r</mi>
<mo>)</mo>
</mrow>
<mi>s</mi>
<mi>i</mi>
<mi>n</mi>
<mi>&theta;</mi>
<mo>+</mo>
<msub>
<mi>T</mi>
<mi>n</mi>
</msub>
<mo>&rsqb;</mo>
<mo>+</mo>
<mi>B</mi>
</mrow>
Wherein TnFor crank axle net moment of torsion, W is polished rod load, and B is Imbalance in weight weight, and Q is balance weight weight, and V is balance weight center of gravity
Distance, q are crank weight, and r is crank centroidal distance, and θ is crank angle,For torque factor；
In above formula, balance weight weight Q, balance weight centroidal distance V, crank weight q, crank centroidal distance r and balance weight centroidal distance V
Determined by oil machinery parameter；
304) adjustment of sequential is carried out to the electrical parameter collected to electrical parameter acquisition module, by displacement time and load-time pair
Should, it is using polished rod load as ordinate, the order of load sample and displacement sample is corresponding using displacement as abscissa, complete meter
Calculate indicator card.
9. the acquisition method of the indicator card harvester according to claim 8 based on electrical power and counterweight, it is special
Sign is crank axle net moment of torsion T in step 303)nCalculated by below equation：
<mrow>
<msub>
<mi>T</mi>
<mrow>
<mi>n</mi>
<mi>o</mi>
</mrow>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mn>9550</mn>
<mo>&times;</mo>
<msub>
<mi>P</mi>
<mrow>
<mi>m</mi>
<mi>o</mi>
<mi>t</mi>
<mi>o</mi>
<mi>r</mi>
</mrow>
</msub>
</mrow>
<mrow>
<mi>r</mi>
<mi>o</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>&times;</mo>
<msub>
<mi>i</mi>
<mrow>
<mi>b</mi>
<mi>e</mi>
<mi>l</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>&times;</mo>
<msub>
<mi>i</mi>
<mrow>
<mi>g</mi>
<mi>b</mi>
</mrow>
</msub>
</mrow>
Tn=Tno×ηbelt×ηgb
Wherein PmotorFor the instantaneous power of motor, rot is motor speed, ibeltFor diameter pulley and motor wheel diameter ratio,
igbFor reduction box gearratio, ηbeltFor Belt Transmission Efficiency, ηgbFor reduction box transmission efficiency；
Motor speed is calculated by following formula：
Rot=igb×ibelt×N
Wherein N is jig frequency.
10. the acquisition method of the indicator card harvester according to claim 8 based on electrical power and counterweight, it is special
Sign is torque factor in step 303)Calculated by below equation：
<mrow>
<mover>
<mrow>
<mi>T</mi>
<mi>F</mi>
</mrow>
<mo>&OverBar;</mo>
</mover>
<mo>=</mo>
<mfrac>
<mi>A</mi>
<mi>C</mi>
</mfrac>
<mi>R</mi>
<mfrac>
<mrow>
<mi>s</mi>
<mi>i</mi>
<mi>n</mi>
<mi>&alpha;</mi>
</mrow>
<mrow>
<msub>
<mi>sin&beta;</mi>
<mn>1</mn>
</msub>
</mrow>
</mfrac>
</mrow>
<mrow>
<msub>
<mi>&beta;</mi>
<mn>1</mn>
</msub>
<mo>=</mo>
<mi>arccos</mi>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msup>
<mi>C</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<msup>
<mi>P</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<msup>
<mi>K</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<msup>
<mi>R</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>2</mn>
<mi>K</mi>
<mi>R</mi>
<mi> </mi>
<msub>
<mi>cos&theta;</mi>
<mn>2</mn>
</msub>
</mrow>
<mrow>
<mn>2</mn>
<mi>C</mi>
<mi>P</mi>
</mrow>
</mfrac>
<mo>)</mo>
</mrow>
</mrow>
It is rightHandled；
<mrow>
<mover>
<mrow>
<mi>T</mi>
<mi>F</mi>
</mrow>
<mo>&OverBar;</mo>
</mover>
<mo>=</mo>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mn>0.3</mn>
</mtd>
<mtd>
<mrow>
<mn>0</mn>
<mo>&le;</mo>
<mover>
<mrow>
<mi>T</mi>
<mi>F</mi>
</mrow>
<mo>&OverBar;</mo>
</mover>
<mo><</mo>
<mn>0.3</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>-</mo>
<mn>0.3</mn>
</mrow>
</mtd>
<mtd>
<mrow>
<mo>-</mo>
<mn>0.3</mn>
<mo>&le;</mo>
<mover>
<mrow>
<mi>T</mi>
<mi>F</mi>
</mrow>
<mo>&OverBar;</mo>
</mover>
<mo><</mo>
<mn>0</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mi>A</mi>
<mi>C</mi>
</mfrac>
<mi>R</mi>
<mfrac>
<mrow>
<mi>s</mi>
<mi>i</mi>
<mi>n</mi>
<mi>&alpha;</mi>
</mrow>
<mrow>
<msub>
<mi>sin&beta;</mi>
<mn>1</mn>
</msub>
</mrow>
</mfrac>
</mrow>
</mtd>
<mtd>
<mrow>
<mi>e</mi>
<mi>l</mi>
<mi>s</mi>
<mi>e</mi>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>;</mo>
</mrow>
Wherein, R is throw of crankshaft, and C is arm lengths after walking beam；A is walking beam forearm；K is base shaft length；P is length of connecting rod；
α is reference crank angle；β 1 is angle of the connecting rod to walking beam postbrachium；θ 2 is angle of the throw of crankshaft to L；For K to C angle.
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| CN109063629A (en) * | 2018-07-27 | 2018-12-21 | 滕奇刚 | A method of pumping unit lower dead point position on identification oil pumping electromechanical parameters curve |
| CN109085438A (en) * | 2018-09-06 | 2018-12-25 | 东北大学 | Intelligent monitoring device and method based on electrical parameter real-time monitoring oil pumping system efficiency |
| CN109236277A (en) * | 2018-09-05 | 2019-01-18 | 东北大学 | A kind of oil well fault diagnostic expert system based on production rule |
| CN109505587A (en) * | 2018-09-29 | 2019-03-22 | 陕西安控科技有限公司 | A kind of oil pumping machine crank torque measuring method and device |
| CN110185438A (en) * | 2019-06-27 | 2019-08-30 | 北京讯腾智慧科技股份有限公司 | Fault Diagnoses of Oil Pump system and method |
| CN110346082A (en) * | 2019-07-18 | 2019-10-18 | 青岛江林驱动科技有限公司 | Scaling method of the beam pumping unit suspension point by force measuring system |
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| CN115012910A (en) * | 2022-05-31 | 2022-09-06 | 常州艾控智能仪表有限公司 | Crank balance pumping unit parameter estimation method for electric parameter-to-indicator diagram |
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| CN115012910A (en) * | 2022-05-31 | 2022-09-06 | 常州艾控智能仪表有限公司 | Crank balance pumping unit parameter estimation method for electric parameter-to-indicator diagram |
| CN115012911A (en) * | 2022-05-31 | 2022-09-06 | 常州艾控智能仪表有限公司 | Device and method for accurately positioning motor parameters of upper dead point and lower dead point of beam-pumping unit |
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