CN103982161B - Intelligent double-speed oil production control device - Google Patents
Intelligent double-speed oil production control device Download PDFInfo
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Abstract
The invention relates to the technical field of a control device of an oil pumping machine and particularly relates to an intelligent double-speed oil production control device. The intelligent double-speed oil production control device comprises a data acquisition and processing device, a double-speed motor, a current transformer, a voltage transformer, a position sensor and a pressure sensor, wherein the current transformer and the voltage transformer can be fixedly arranged in a power distribution box of the oil pumping machine; the position sensor can be fixedly arranged on the oil pumping machine and can detect the upper initial position and the lower initial position of the oil pumping machine; the pressure sensor can be fixedly arranged on a wellhead of an oil well. The intelligent double-speed oil production control device has the advantages that the structure is reasonable and compact, and the use is convenient; a load sensor is omitted, a frequency converter is changed into the double-speed motor, the current transformer and the voltage transformer which are low in cost and maintenance-free are adopted, the sensing device is low in cost, long in service life and less in maintenance amount; intelligent operation and power conservation can be realized by the data acquisition and processing device, and the requirement of a user for digital and intelligent oil production can be met by the data transmission device; the intelligent double-speed oil production control device has the characteristics of low cost, high reliability, simpleness and high efficiency.
Description
Technical field
The present invention relates to pumping unit control device technical field, it is a kind of intelligent double speed oil recovery control device.
Background technology
At present in the development process in oil field, the on the one hand prolongation with the oil mining time and oil well pump leakage, the pump housing
The impact of the factors such as middle oil-gas ratio change, so that oil well pump all has the phenomenon that sky is taken out or degree of filling is not enough to some extent, is made
Become the invalid abrasion of beam type pumping unit and the waste of electric energy, increase pumping unit operation and maintenance cost；On the other hand,
With the development of information and electronic technology, particularly Internet of Things and the intelligent popularization and application in oil field for the oilfield construction technology, need
The creation datas such as the electric current of oil well, indicator card, liquid level, Liquid output are uploaded to central control room, to realize the intellectuality of oil well
Dynamic control.
On stream, for the situation that pump degree of filling is not enough or sky is taken out, the conservation measures taken mainly has three in oil field
Kind：One is that continuous oil production method is changed into intermittent recovery mode, and the method, due to being driven a well pattern using segmentation, is easily caused liquid and adopts
Go out to make not in time liquid level to raise, thus reduce stratum oil-containing mixing liquid and flowing into the ability of pit shaft, lowering oilwell produced fluid amount；With
When, the production accident of bursting by freezing pipeline of oil production easily occurs using intermittent recovery mode when in the winter time；Two is the skin of adjustment motor
Belt wheel or the stroke of oil pumper, which is more suited to the seriously superfluous for a long time oil well of production capacity, for excess production capacity
Oil well serious or that change of production is larger, if continually carried out, will lead to the high labor intensive of workman and cost for oil production
Quickly high, if carrying out not in time adjusting ginseng operation, it will lead to oily well yield to decline；Three is to adopt RHVC, should
Mode is to pass through to control the frequency of motor input power using variable-frequency governor, to adjust and to control the rotating speed of motor or to take out
The jig frequency of oil machine, to realize the Proper Match of well deliverability and liquid-producing capacity, the core of RHVC is to become frequency modulation
Fast device, has artificial and manual two kinds of control modes.
Theoretically, it is capable of the Proper Match of well deliverability and liquid-producing capacity using RHVC,
It is capable of minimum power consumption and the power consumption expense of ton liquid, but realizes far away above-mentioned target during produce reality, it is main
Reason is：1. fault rate height, life-span are low, and a work period of beam pumping unit is divided into upper and lower two strokes, during upstroke
The electric energy of motor consumption and counter weight of beam unit potential energy jointly drag sucker rod and move upwards, the deadweight of sucker rod during down stroke
With its produce liquid in buoyancy difference and oil pump piston to well head liquid drag again balance weight move upwards and motor operating,
When downward drawing force is larger, when the rotary speed of motor exceedes synchronous rotational speed, motor will be changed into generator to electrical network
Send electric energy, for most of beam pumping units, in a stroke, motor can have one or more
Motor status, return the state of transmission of electricity energy to electrical network, and variable-frequency governor can be divided into matrix converter according to operation principle
（Hand over-hand over）With two kinds of AC and DC hybrid transmission system, matrix frequency converter or AC and DC hybrid transmission system is all by substantial amounts of electronics unit device
Part is constituted, and under the field work environmental condition of oil pumper, itself is exactly acid test to its permanently effective life-span, then plus
Oil pumper down stroke return the presence of defeated energy state, although research institution and production firm have passed through unremitting effort for many years,
The successful case effectively using for a long time in national oil field is still rare；2. it is high cost, economize on electricity and do not save money, in order to solve frequency conversion
Application problem on oil pumper for the device, manufactures unit or selects quality or higher grade electronic devices and components, to improve
It adapts to the ability of harsh and unforgiving environments, extends its service life, or installs on the DC master row of AC-DC-AC converter and let out
Electric discharge resistance, exchanges the life-span in the way of losing electric energy for；Or redesign and a set of reverse converter plant of increase, unnecessary electric energy
Return defeated to electrical network, or the power saving capability so reducing frequency converter increased the manufacturing cost of frequency converter, and frequency converter
Inherently belong to the technical products of high value, medium-sized price is about 3.7 ten thousand yuan taking the frequency converter of a 37kW as a example,
Because increasing direct current bleeder resistance or return the add ons such as the frequency changer circuit of transmission of electricity energy, unit price exists the frequency converter using on oil pumper
More than 5.0 ten thousand yuan；The generally ten type oil pumpers that 37kW frequency converter drags, mean hours power consumption is 8.0kWh, and power saving rate is pressed
20%th, electricity price press 0.68 yuan/kWh, year run 5000 hours, then its static payback time be：50000/（5000*0.5*
0.2*8）=9.2 years, however existing frequency converter on oil pumper continuously normally the possibility using 9.2 years minimum, cause existing skill
Art personnel are generally assert and are necessarily sustained economic losses using frequency converter on oil pumper.
For data acquisition, at present at home, most of oil field typically all records surface dynamometer card using pump dynamograph, but
It is at the scene, workman uses pump dynamograph frequency few, every other month just using once, finally judges producing well by measurement result
Working condition, this tradition ground dynamometer card analysis method not only give bring on manpower and material resources on waste, also waste
Time, reduce the efficiency of oil well work, and pump dynamograph access times at the scene are limited examines it is impossible to do in time to be out of order
Disconnected, unnecessary economic loss can be brought in oil supply field, also greatly reduce the efficiency of work.In order to realize the automatic of oil field production
Change and intelligent, improve the promptness of oil well operational application, be typically based on the needs to oil well analysis, using Current Mutual Inductance
Device, voltage transformer, pressure sensor, load transducer are respectively used to gather oil pumper running current, working voltage, oil pipe pressure
Power, casing pressure data and indicator card, it is crucial and core component is load transducer.At present, oil field is used for Department of Automation
Load transducer in system is primarily present problems with：1. useful life is short, and load transducer is chronically at drawing of alternate load
During stretching, coefficient of elasticity is easily caused to change or even lost efficacy, accurately the useful life of measurement is shorter；2. expensive,
Load transducer includes the measurement of power and measurement two parts of displacement, according to dynamometry principle can be divided into resistance-strain type, piezoelectric type,
Pressure resistance type etc.；Stay-supported, laser type and acceleration formula etc. can be divided into according to displacement principle；Can be divided into wired according to working method
With wireless two kinds, because manufacturing process is complicated, vigour part is many, lead to its selling price higher, the preferable load transducer of quality
Unit price more than 1000 yuan, in the case that useful life is shorter, improve the operating cost of automatic control system；3.
Adaptability is low, and load transducer needs to be arranged in frame and polished rod, if adopting wired mode, needs by relatively long distance
Lead is connected with data acquisition unit and power supply, the situation moved with oil pumper with lead in load transducer and move
Under, easily break down；If needing irregularly to change battery using wireless mode, maintenance workload is larger.Although load passes
Sensor has the accurate advantage of measurement data, but useful life is short, expensive and adaptability is low becomes load transducer, even machine
Tool oil extraction system is controlled automatically at the major obstacle that full oil field is widelyd popularize.
Therefore, existing well measurement controls and dragging system cannot meet above-mentioned actual demand, and urgent need is developed can be real
The Intelligent Dynamic of existing oil well controls, and can meet the measure and control device that creation data uploads in real time again.
Content of the invention
The invention provides a kind of intelligent double speed oil recovery control device, overcome the deficiency of above-mentioned prior art, it can have
Effect solve existing oil production machine control device exist frequency conversion oil recovery TT＆C system manufacture maintenance cost higher, cannot long time stability
The problem of work.
The present invention also solves existing oil production machine control device further and cannot realize the reliable upload in real time of creation data
Problem.
The technical scheme is that and realized by following measures：A kind of intelligent double speed oil recovery control device, including
Data acquisition processing device, two-speed motor, the current transformer being fixedly mounted in distribution box for oil pump unit and voltage are mutual
Sensor, can be fixedly mounted on oil pumper and detect the position sensor of oil pumper upper and lower initial point position and can fix
It is arranged on the pressure sensor on well mouth of oil well；Current transformer, voltage transformer, position sensor and pressure sensor are respectively
Electrically connect with the signal input terminal of data acquisition processing device, the signal output terminal of data acquisition processing device is electrically connected with
The relay contactor self-con-tained unit of two-speed motor high low speed working condition can be controlled, data acquisition processing device is provided with
Data transmission device.
Further optimization and/or improvements to foregoing invention technical scheme are presented herein below：
Above-mentioned data acquisition processing device may include housing, analog-to-digital conversion module, central processing unit and D/A converter module；
The signal output part of current transformer, voltage transformer, position sensor and pressure sensor respectively with analog-to-digital conversion module
Input terminal electrically connects, and the lead-out terminal of analog-to-digital conversion module is electrically connected with the signal input part of central processing unit, and central authorities are processed
The signal output part of device is electrically connected with the input terminal of D/A converter module.
Above-mentioned relay contactor self-con-tained unit may include the high speed automatic control being fixedly mounted in distribution box for oil pump unit and continues
Electric contactor and low speed automatic control relay contactor, high speed automatic control relay contactor includes high speed automatic control contactor coil and can be because
The high speed automatic control contactor normally opened contact that high speed automatic control contactor coil is energized and closes, low speed automatic control relay contactor includes low
Fast automatic control contactor coil and the low speed automatic control contactor normally opened contact that can close because of the energising of low speed automatic control contactor coil；
High speed automatic control contactor coil is connected electrically in the first output end of D/A converter module, and low speed automatic control contactor coil electrically connects
In the second output end of D/A converter module；The control circuit of two-speed motor include relay contactor High-speed Control circuit and
Relay contactor slow control circuit, one end electricity of the High-speed Control relay coil in relay contactor High-speed Control circuit
It is serially connected with high speed automatic control contactor normally opened contact, the low speed control relay coil in relay contactor slow control circuit
One end electricity is serially connected with low speed automatic control contactor normally opened contact.
Above-mentioned data transmission device includes can transport module, wire communication module, wired output interface, wireless communication module
With telecommunication antenna；Transport module, wire communication module and wireless communication module are arranged on enclosure interior, wired output interface
It is arranged on housing with telecommunication antenna, the input of transport module is electrically connected with the communication ends of central processing unit, transmit mould
The output end of block is electrically connected with wire communication module and wireless communication module, and the signal output part of wire communication module is defeated with wired
Outgoing interface electrically connects, and the signal output part of wireless communication module is electrically connected with telecommunication antenna and can launch long distance wireless number
It is believed that number.
Above-mentioned wired output interface can be electrically connected with computer or data logger by data cable.
Above-mentioned current transformer may include A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductor, and A phase is electric
The primary winding of current transformer, B phase current mutual inductor and C phase current mutual inductor is set in the A phase power supply of two-speed motor
On line, B phase power line and C phase power line, the secondary line of A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductor
The binding post of circle is electrically connected with the signal input terminal of data acquisition processing device respectively；It is electric that voltage transformer may include A phase
Pressure transformer, B phase voltage transformer and C phase voltage transformer, A phase voltage transformer, B phase voltage transformer and C phase voltage are mutual
The binding post of the primary winding of sensor is electrically connected with the A phase power line of two-speed motor, B phase power line and C phase power line respectively
Connect, the binding post of the secondary coil of A phase voltage transformer, B phase voltage transformer and C phase voltage transformer is adopted with data respectively
The signal input terminal electrical connection of collection processing meanss.
Above-mentioned pressure sensor may include tubing pressure sensor and casing pressure sensor.
Above-mentioned position sensor may include upper position sensor and lower position sensor, and upper position sensor is fixed on oil pumping
On machine body and can send signal during initial point position on balance weight is located at, lower position sensor is fixed on oil pumper body
And signal can be sent when balance weight is located at lower initial point position.
The signal output terminal of above-mentioned data acquisition processing device is electrically connected with can be with the control terminal of variable-frequency governor
The current analog output spare interface of electrical connection and voltage analog output spare interface.
Present configuration is reasonable and compact, easy to use, and it is by deducting load transducer, and frequency converter is changed to double speed
Motor, using cheap, non-maintaining current transformer and voltage transformer, sensing device is with low cost, life-span length, dimension
Shield amount is few, is capable of intelligent operation by data acquisition processing device and saves electric energy, can be expired by data transmission device
The digitlization of sufficient user and the intelligent demand recovered the oil, have that low cost, reliability be high, easy, efficient feature.
Brief description
Accompanying drawing 1 is the electricity association schematic diagram of preferred embodiment.
Accompanying drawing 2 is the control circuit schematic diagram of the two-speed motor in accompanying drawing 1.
Coding in accompanying drawing is respectively：1 is data acquisition processing device, and 2 is two-speed motor, and 3 is current transformer, 4
For voltage transformer, 5 is position sensor, and 6 is pressure sensor, and 7 is data transmission device, and 8 is analog-to-digital conversion module, and 9 are
Central processing unit, 10 is D/A converter module, and 11 is high speed automatic control contactor coil, and 12 is that high speed automatic control contactor is normally opened touches
Point, 13 is low speed automatic control contactor coil, and 14 is low speed automatic control contactor normally opened contact, and KM10 is High-speed Control relay line
Circle, KM20 controls the first relay coil for low speed, and KM30 controls the second relay coil for low speed, and KM33 continues for low speed second
Electrical equipment normally-closed contact, KM13 is fast-acting relay normally-closed contact.
Specific embodiment
The present invention is not limited by following embodiments, can technology according to the present invention scheme determine specifically with actual conditions
Embodiment.
In the present invention, for the ease of description, the description of the relative position relation of part is all according to Figure of description 1
Butut mode being described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is the Butut side according to Figure of description
Always determine.
With reference to embodiment and accompanying drawing, the invention will be further described：
As shown in accompanying drawing 1,2, this intelligent double speed oil recovery control device includes data acquisition processing device 1, two-speed motor
2nd, the current transformer 3 being fixedly mounted in distribution box for oil pump unit and voltage transformer 4, oil pumper can be fixedly mounted on
Go up and detect that the position sensor 5 of oil pumper upper and lower initial point position and the pressure being fixedly mounted on well mouth of oil well pass
Sensor 6；Current transformer 3, voltage transformer 4, position sensor 5 and pressure sensor 6 respectively with data acquisition processing device 1
Signal input terminal electrical connection, the signal output terminal of data acquisition processing device 1 is electrically connected with and double speed can be controlled electronic
The relay contactor self-con-tained unit of the high low speed working condition of machine 2, data acquisition processing device 1 is provided with data transmission device 7.
Difference compared with existing intelligent oil extraction TT＆C system for the present invention resides in reduced load transducer, and will control and drag
Device is changed to control two-speed motor 2 by relay contactor self-con-tained unit by Frequency Converter Control common motor by existing.
Two-speed motor 2 is existing public device, and it reaches change stator rotation by changing the method for attachment of stator winding
Field pole logarithm, thus changing the rotating speed of motor, can change rotating speed with the requirement of load characteristic with the step due to having,
Thus reaching the Proper Match of power and rotating speed and simplifying the feature of speed change system and can be rated as the ideal of mechanical system saving energy consumption
Power, is widely used in agro-industrial sector such as lathe, mine, metallurgy, weaving, printing and dyeing, chemical industry, agricultural machinery.Due to saving
Traditional load transducer necessary to oil pumper Automated condtrol, using cheap, non-maintaining current transformer 3 and
Voltage transformer 4, current transformer 3 and voltage transformer 4 are arranged in distribution box for oil pump unit, it is to avoid during workover treatment pair
The damage of sensor, with low cost, life-span length, maintenance are few.By data transmission device 7 disclosure satisfy that user digitlization and
The intelligent demand recovered the oil.
According to actual needs above-mentioned intelligent double speed oil recovery control device can be made further optimization and/or improvements：
As shown in Figure 1, data acquisition processing device 1 includes housing, analog-to-digital conversion module 8, central processing unit 9 and digital-to-analogue
Modular converter 10；Current transformer 3, voltage transformer 4, position sensor 5 and pressure sensor 6 signal output part respectively with
The input terminal electrical connection of analog-to-digital conversion module 8, the signal input of the lead-out terminal of analog-to-digital conversion module 8 and central processing unit 9
End electrical connection, the signal output part of central processing unit 9 is electrically connected with the input terminal of D/A converter module 10.Oil pumper ground sets
Standby inclusion motor and oil pumper body two parts.According to law of conservation of energy, the Instantaneous input power of motor is motor
Instantaneous power consumption, the instantaneous loss power of mechanical part and polished rod instantaneous power three's sum.The instantaneous consumption of motor
Power removes to be had outside the Pass with the workmanship of motor, model, mainly relevant with the running current of motor and voltage；By to taking out
Oil machine system power and Loss Research and analysis, the instantaneous loss power of mechanical part is straight with polished rod present position in each jig frequency
Connect correlation, and polished rod is essentially identical in same position, and will not change within a certain period of time.Therefore, as long as accurate survey
Measure the Instantaneous input power of motor of oil extractor, according to actual oil pumper, motor model and service data, using set up
The instantaneous loss power of mechanical part, the instantaneous power consumption model of motor it is possible to calculate the polished rod horsepower of oil pumper,
Draw out the indicator card of analysis oil pumper operation conditions（Electric work figure）.The present invention adopts computer technology, by indicator card（Electricity
Work(figure）The change of size, using indicator card area and oil pumper Liquid output linearly positively related relation, calculates oil pumper
Situations such as ratio of the Liquid output of well, fluid supply capacity and pumping capacity, change in hydrodynamic face, related data information one side of generation
Face is uploaded to central control room by data transmission device 7, the analysis for Instructing manufacture situation and management；On the other hand pass through
Switch output to two-speed motor 2, changes the rotating speed of motor and the jig frequency of oil pumper by automatic, realize oil pumper feed flow with
The balance of pumping, the purpose reaching intelligent operation and saving electric energy.
As shown in accompanying drawing 1,2, relay contactor self-con-tained unit includes the height that can be fixedly mounted in distribution box for oil pump unit
Fast automatic control relay contactor and low speed automatic control relay contactor, high speed automatic control relay contactor includes high speed automatic control contactor coil
11 and the high speed automatic control contactor normally opened contact 12 that can be energized and close because of high speed automatic control contactor coil 11, low speed automatic control continues
Electric contactor includes low speed automatic control contactor coil 13 and the low speed that can be energized and close because of low speed automatic control contactor coil 13
Automatic control contactor normally opened contact 14；High speed automatic control contactor coil 11 is connected electrically in the first output end of D/A converter module 10
On, low speed automatic control contactor coil 13 is connected electrically in the second output end of D/A converter module 10；The control of two-speed motor 2
Circuit includes relay contactor High-speed Control circuit and relay contactor slow control circuit, in relay contactor High-speed Control electricity
One end electricity of the High-speed Control relay coil in road is serially connected with high speed automatic control contactor normally opened contact 12, low in relay contactor
One end electricity of the low speed control relay coil in fast control circuit is serially connected with low speed automatic control contactor normally opened contact 14.Double speed electricity
The relay contactor High-speed Control circuit of motivation 2 and relay contactor slow control circuit are existing public control electricity
Road, in the control circuit schematic diagram of two-speed motor as shown in Figure 2, the relay contactor of two-speed motor 2 is controlled at a high speed
Circuit processed includes High-speed Control relay coil KM10 and low speed the second relay normally-closed contact KM33, the continuing of two-speed motor 2
Electric contactor slow control circuit includes low speed and controls the first relay coil KM20, low speed to control the second relay coil KM30
With fast-acting relay normally-closed contact KM13, its High-speed Control relay coil is High-speed Control relay coil KM10, its low speed
Control relay coil includes low speed and controls the first relay coil KM20 and low speed to control the second relay coil KM30, low speed
Control the first relay coil KM20 and low speed control the second relay coil KM30 electrically in parallel together with, this low speed second relay
Device normally-closed contact KM33 can control the second relay coil KM30 energising to disconnect, this fast-acting relay normally-closed contact because of low speed
KM13 can disconnect because of High-speed Control relay coil KM10 energising, and High-speed Control relay coil KM10 and low speed second continue
Between electrical equipment normally-closed contact KM33, electricity is serially connected with high speed automatic control contactor normally opened contact 12, and low speed controls the first relay coil
Between KM20 and fast-acting relay normally-closed contact KM13, electricity is serially connected with low speed automatic control contactor normally opened contact 14.
According to actual needs, data transmission device 7 includes transport module, wire communication module, wired output interface, wireless
Communication module and telecommunication antenna；Transport module, wire communication module and wireless communication module are arranged on enclosure interior, wired
Output interface and telecommunication antenna are arranged on housing, and the input of transport module is electrically connected with the communication ends of central processing unit 9
Connect, the output end of transport module is electrically connected with wire communication module and wireless communication module, the signal output of wire communication module
End is electrically connected with wired output interface, and the signal output part of wireless communication module is electrically connected with telecommunication antenna and can launch
Long distance wireless data-signal.Long distance wireless data-signal can be launched to data acquisition and communication device by telecommunication antenna
Transmission data is it is desirable to once showing in real time per hour and showing the data needed for oil well production, including production unit, well
Number, A phase running current, B phase running current, AB phase working voltage, BC phase working voltage, averagely run active power, average transport
Row reactive power, running average power factor, draw indicator card, stroke, jig frequency, balance of well pumping unit degree, upstroke maximum, force, under
Stroke minimum force, tubing pressure, casing pressure, dynamic oil level, oil well output.Fluid supply capacity can also be differentiated according to indicator card
Situation, the operation jig frequency of closed loop real-time control oil pumper, output port is divided into both of which：Provide two-speed motor 2 and control mould
Formula, realizes oil pumper two-stage jig frequency operational mode；Provide frequency transducer control mode, realize oil pumper stepless continuous and adjust jig frequency.Tool
There is data to upload and multiple motor closed loop control ports, meet the digitlization of user and the intelligent demand recovered the oil comprehensively.Though
So system is slightly lower to the computational accuracy of oil well output and hydrodynamic face, but can meet the demand to oil well condition managing for the user, in real time
Property is strong.Demarcated by individual well and technological accumulation, lay the foundation for user's simplification oil field technological process and platform is provided, save and throw
Money.
According to actual needs, wired output interface is electrically connected with computer or data logger by data cable.
According to actual needs, current transformer 3 includes A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductance
Device, the primary winding of A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductor is set in two-speed motor 2
A phase power line, on B phase power line and C phase power line, A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductor
The binding post of secondary coil electrically connect with the signal input terminal of data acquisition processing device 1 respectively；Voltage transformer 4 wraps
Include A phase voltage transformer, B phase voltage transformer and C phase voltage transformer, A phase voltage transformer, B phase voltage transformer and C phase
The binding post of the primary winding of voltage transformer respectively with the A phase power line of two-speed motor 2, B phase power line and C phase power supply
Line electrically connects, the binding post of the secondary coil of A phase voltage transformer, B phase voltage transformer and C phase voltage transformer respectively with
The signal input terminal electrical connection of data acquisition processing device 1.
According to actual needs, pressure sensor 6 includes tubing pressure sensor and casing pressure sensor.Pacified by fixation
It is contained in the tubing pressure sensor of well mouth of oil well and casing pressure sensor detects tubing pressure and casing pressure respectively.
According to actual needs, position sensor 5 includes upper position sensor and lower position sensor, and upper position sensor is solid
It is scheduled on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor is fixed on oil pumping
On machine body and can balance weight be located at lower initial point position when send signal.
According to actual needs, be electrically connected with can be with variable-frequency governor for the signal output terminal of data acquisition processing device 1
Control terminal electrical connection current analog output spare interface and voltage analog output spare interface.Exported by current analog
Spare interface and voltage analog output spare interface, can connect and control existing intact frequency control on existing equipment
Device, maximized utilization existing equipments resources, cost-effective.
First, the energy-conservation of the present invention intelligence double speed oil recovery control device and existing frequency conversion oil recovery TT＆C system and Cost comparisons are such as
Under:
1. present invention intelligence double speed oil recovery control device is as follows with existing frequency conversion oil recovery TT＆C system electricity saving performance contrast：
, according to statistics, the power consumption of oil pumper taking motor power (output) 30～37kW, 10～12 type oil pumpers as a example
The linear positive correlation with beam-pumping unit jig frequency, two-speed motor in low cruise, when 12 poles, 16 pole and frequency converter traction 8
Pole single speed motor running frequency be respectively 33.3 Hz, 25.0 Hz beam-pumping unit jig frequency consistent, in power frequency（Motor is at a high speed）
Under state, power consumption about 8kW, when running per year, rate 5000h, electricity price press 0.5 yuan/kWh, calculate the maximum section of oil pumper individual well
Electricity（Run on low frequency or lower-speed state always）With average amount of electricity saving（Low frequency or lower-speed state, high frequency or fast state are each
50%）Situation be shown in Table 1.
As it can be seen from table 1 under average operating mode, oil pumper uses the Spring Festival holidays electricity charge during present invention to be less than using existing
About 906 yuan of the Spring Festival holidays electricity charge of frequency conversion oil recovery TT＆C system, i.e. the power saving capability of the present invention slightly below existing frequency conversion oil recovery observing and controlling
The power saving capability of system.
2. the present invention is as follows with the manufacture of existing frequency conversion oil recovery TT＆C system and installation maintenance cost contrast：
Taking the 10 type oil pumpers of 37kW as a example, about 39381 yuan of the manufacturing cost of frequency conversion oil recovery TT＆C system, consist of：
Frequency converter：37*800=29600 unit
Observing and controlling sensor：1500 yuan
Distribution box and switch：2500 yuan
Technological development expense is shared：500 yuan
Mounting cost：300 yuan
Administration fee：（29600+1500+2500+500+300）* 0.08=34400*0.08=2752 unit
Tax：（34400+2752）* 0.08=2229 unit
The market unit price of existing frequency conversion oil recovery TT＆C system is about 50,000 yuan, according to table 1, existing frequency conversion oil recovery TT＆C system
Average year economize on electricity expense is 5440 yuan, and the investment payback time is 9.2 years, is not only above CNPC's " investment of energy-saving investment project
Payoff period must not be higher than 5 years " regulation, according to actually used experience infer, converter plant in the field environment cannot use 9.2
Year, in the case of 5.0 ten thousand yuan of sales price, enterprise's gross profit is 10619 yuan, and separate unit profit margin is 21.24%.
And about 11219 yuan of the manufacturing cost of the present invention, consist of：
Observing and controlling sensor：500 yuan（Reduce 1000 yuan of load transducer expense）
Motor improvement expenses：6000 yuan
Distribution box and switch：2500 yuan
Technological development expense is shared：500 yuan
Mounting cost：300 yuan
Administration fee：（500+6000+2500+500+300）* 0.08=9800*0.08=784 unit
Tax：（9800+784）* 0.06=635 unit
4534 yuan of the expense as it can be seen from table 1 average year of the present invention economizes on electricity, carries out inverse in 5 years according to the investment payback time,
The separate unit price ceiling 5*4534=22670 unit of system equipment.In the case of 22670 yuan of sales price, enterprise's gross profit
For 11450 yuan, separate unit profit margin is 50.51%.In 22670 yuan of sales price of the present invention, not only meet CNPC's " energy-conservation
The investment payback time of investment project must not be higher than 5 years " regulation, separate unit gross profit and profit margin are than existing frequency conversion oil recovery observing and controlling system
High 831 yuan and 29.27 percentage points respectively of system, price competitiveness is obvious.
3. the present invention is as follows with the critical component service life contrast of existing frequency conversion oil recovery TT＆C system：
The service life of the load transducer of existing frequency conversion oil recovery TT＆C system：It is usually no more than 3 years
The service life of the frequency converter of existing frequency conversion oil recovery TT＆C system：Generally 3-5
The service life of the current transformer of the present invention：More than 10 years
The service life of the voltage transformer of the present invention：More than 10 years
The service life of the pressure sensor of the present invention：More than 7 years
The service life of the position sensor of the present invention：More than 7 years
The service life of the two-speed motor of the present invention：More than 10 years
The Acceptable life that can be seen that existing frequency conversion oil recovery TT＆C system from above-mentioned Data Comparison is less than 3 years, this
The Acceptable life of invention no technical risk more than 5 years.
In sum, although being slightly below existing frequency conversion oil recovery TT＆C system using present invention power saving capability, it manufactures dimension
Shield cost substantially reduces, and preferably, " investment payback time of energy-saving investment project must not only to meet CNPC for comprehensive economic performance
Higher than 5 years " regulation, separate unit gross profit and profit margin are higher than all existing frequency conversion oil recovery TT＆C system, and it is low to manufacture maintenance cost,
Being capable of stable operation reliably and with long-term, long service life.
Preferably, " investment payback time of energy-saving investment project must not be higher than economic performance of the present invention not only to meet CNPC
5 years " regulation, separate unit gross profit and profit margin are higher than all existing frequency conversion oil recovery TT＆C system, price competitiveness substantially, and
And intelligent double speed oil recovery TT＆C system Acceptable life more than 5 years no technical risk.Deduct load transducer, and by frequency conversion
After device is changed to two-speed motor, the invention has the characteristics that：1. accuracy decreases, but reliability and adaptability substantially carry
Height, after the power indicator card that system design is produced by load transducer is changed to electric energy work(figure, the overall shape of indicator card does not occur
Change, but the accuracy of the surrounded area data of indicator card will decrease, and due to applying the purpose of indicator card in engineering, be
Analyze running status and the stratum fluid supply capacity of oil pumper by indicator card shape, therefore, power indicator card is changed to electric energy work(
Although accuracy decreases but disclosure satisfy that project analysis and the actual demand controlling, using electric current, voltage transformer after figure
4 compared with load transducer, and current transformer, voltage transformer are installed in the power control box of oil pumper, installs and is connected
The oil field operation impact such as convenient, environment and well workover is little, and is constantly in relative static conditions, and reliability and adaptability substantially carry
High；2. life-span length, non-maintaining, current transformer 3, voltage transformer 4 are made using electromagnetic component, projected life more than 10 years,
And it is non-maintaining throughout one's life；Load transducer is made up of a large amount of electronic components, and under environmental condition in freezing winter and in sultry summer, electronic component is old
Change, the speed that follows the string of pressure cell, the life-span is shorter, is usually no more than 3 years, and need periodically or non-periodically right
Supplying cell and connecting wire are safeguarded, workload is big, costly, two-speed motor compared with RHVC, except needing
Periodically to carry out bearing lubrication maintenance outer, be substantially at non-maintaining state throughout one's life, projected life exceed two times of RHVC,
Actual life exceedes more than three times；3. inheritance is good, development difficulty and risk are low, existing employing load transducer and become frequency modulation
The intelligent oil extraction TT＆C system of speed variator is studied, develops, applying for many years although promoted extension is little, but data acquisition, place
Reason, teletransmission and control technology and equipment relative maturity, in the case of system design philosophies not being adjusted, only in system
Weak link improve, because relatively inheritance preferably, effectively reduces technical difficulty and the investment risk of exploitation.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and optimal enforcement effect
Really, non-essential technical characteristic can be increased and decreased according to actual needs, to meet the demand of different situations.
Table 1
| Sequence number | Project name | Unit | Maximum energy-conservation | Average energy-conservation |
| 1 | Existing common electric machine normal year power consumption | kWh | 40000 | 40000 |
| 2 | Existing frequency conversion oil recovery TT＆C system year power consumption | kWh | 24000 | 32000 |
| 3 | Present invention year power consumption | kWh | 26664 | 33332 |
| 4 | Existing frequency conversion oil recovery TT＆C system year economize on electricity | kWh | 16000 | 8000 |
| 5 | Present invention year economizes on electricity | kWh | 13336 | 6668 |
| 6 | Existing frequency conversion oil recovery TT＆C system power saving rate | % | 40 | 20 |
| 7 | Power saving rate of the present invention | % | 33.34 | 16.67 |
| 8 | Existing frequency conversion oil recovery TT＆C system economize on electricity expense | Unit | 10880 | 5440 |
| 9 | Present invention economize on electricity expense | Unit | 9068 | 4534 |
Claims (25)
1. a kind of intelligent double speed oil recovery control device it is characterised in that include data acquisition processing device, two-speed motor, can
The current transformer being fixedly mounted in distribution box for oil pump unit and voltage transformer, can be fixedly mounted on oil pumper and detect
The position sensor of the oil pumper upper and lower initial point position and pressure sensor on well mouth of oil well can be fixedly mounted on；Electric current
Transformer, voltage transformer, the position sensor and pressure sensor signal input terminal with data acquisition processing device respectively
Electrical connection, the signal output terminal of data acquisition processing device is electrically connected with and can control two-speed motor high low speed working condition
Relay contactor self-con-tained unit, data acquisition processing device is provided with data transmission device.
2. intelligent double speed oil recovery control device according to claim 1 is it is characterised in that data acquisition processing device includes
Housing, analog-to-digital conversion module, central processing unit and D/A converter module；Current transformer, voltage transformer, position sensor and
The signal output part of pressure sensor is electrically connected with the input terminal of analog-to-digital conversion module respectively, the output end of analog-to-digital conversion module
Son electrically connects with the signal input part of central processing unit, the signal output part of central processing unit and the input of D/A converter module
Son electrical connection.
3. intelligent double speed oil recovery control device according to claim 1 and 2 is it is characterised in that relay contactor self-con-tained unit
Including the high speed automatic control relay contactor being fixedly mounted in distribution box for oil pump unit and low speed automatic control relay contactor, at a high speed
Automatic control relay contactor includes high speed automatic control contactor coil and the height that can close because of the energising of high speed automatic control contactor coil
Fast automatic control contactor normally opened contact, low speed automatic control relay contactor includes low speed automatic control contactor coil and can be because of low speed automatic control
The low speed automatic control contactor normally opened contact that contactor coil is energized and closes；High speed automatic control contactor coil is connected electrically in digital-to-analogue and turns
In first output end of die change block, low speed automatic control contactor coil is connected electrically in the second output end of D/A converter module；Double
The control circuit of electric motor with speed includes relay contactor High-speed Control circuit and relay contactor slow control circuit, connects in relay
One end electricity of the High-speed Control relay coil in tentaculum High-speed Control circuit is serially connected with high speed automatic control contactor normally opened contact,
It is normally opened that one end electricity of the low speed control relay coil in relay contactor slow control circuit is serially connected with low speed automatic control contactor
Contact.
4. intelligent double speed oil recovery control device according to claim 1 and 2 is it is characterised in that data transmission device includes passing
Defeated module, wire communication module, wired output interface, wireless communication module and telecommunication antenna；Transport module, wire communication
Module and wireless communication module are arranged on the enclosure interior of data transmission device, and wired output interface and telecommunication antenna are installed
On housing, the input of transport module is electrically connected with the communication ends of central processing unit, and the output end of transport module is electrically connected with
Wire communication module and wireless communication module, the signal output part of wire communication module is electrically connected with wired output interface, wirelessly
The signal output part of communication module is electrically connected with telecommunication antenna and can launch long distance wireless data-signal.
5. intelligent double speed oil recovery control device according to claim 3 is it is characterised in that data transmission device includes transmitting
Module, wire communication module, wired output interface, wireless communication module and telecommunication antenna；Transport module, wire communication mould
Block and wireless communication module are arranged on the enclosure interior of data transmission device, and wired output interface and telecommunication antenna are arranged on
On housing, the input of transport module is electrically connected with the communication ends of central processing unit, and the output end of transport module has been electrically connected with
Line communication module and wireless communication module, the signal output part of wire communication module is electrically connected with wired output interface, channel radio
The signal output part of news module is electrically connected with telecommunication antenna and can launch long distance wireless data-signal.
6. intelligent double speed oil recovery control device according to claim 4 is it is characterised in that wired output interface passes through data
Cable is electrically connected with computer or data logger.
7. intelligent double speed oil recovery control device according to claim 5 is it is characterised in that wired output interface passes through data
Cable is electrically connected with computer or data logger.
8. intelligent double speed oil recovery control device according to claim 1 and 2 is it is characterised in that current transformer includes A phase
Current transformer, B phase current mutual inductor and C phase current mutual inductor, A phase current mutual inductor, B phase current mutual inductor and C phase current
The primary winding of transformer is set on A phase power line, B phase power line and the C phase power line of two-speed motor, and A phase is electric
The binding post of the secondary coil of current transformer, B phase current mutual inductor and C phase current mutual inductor is filled with data acquisition process respectively
The signal input terminal electrical connection put；Voltage transformer includes A phase voltage transformer, B phase voltage transformer and C phase voltage mutual inductance
Device, the binding post of the primary winding of A phase voltage transformer, B phase voltage transformer and C phase voltage transformer is electric with double speed respectively
The A phase power line of motivation, B phase power line and the electrical connection of C phase power line, A phase voltage transformer, B phase voltage transformer are electric with C phase
The binding post of the secondary coil of pressure transformer is electrically connected with the signal input terminal of data acquisition processing device respectively.
9. intelligent double speed oil recovery control device according to claim 3 is it is characterised in that current transformer includes A phase current
Transformer, B phase current mutual inductor and C phase current mutual inductor, A phase current mutual inductor, B phase current mutual inductor and C phase current mutual inductance
The primary winding of device is set on A phase power line, B phase power line and the C phase power line of two-speed motor, and A phase current is mutual
The binding post of the secondary coil of sensor, B phase current mutual inductor and C phase current mutual inductor respectively with data acquisition processing device
Signal input terminal electrically connects；Voltage transformer includes A phase voltage transformer, B phase voltage transformer and C phase voltage transformer, A
The binding post of the primary winding of phase voltage transformer, B phase voltage transformer and C phase voltage transformer respectively with two-speed motor
A phase power line, B phase power line and C phase power line electrical connection, A phase voltage transformer, B phase voltage transformer and C phase voltage are mutual
The binding post of the secondary coil of sensor is electrically connected with the signal input terminal of data acquisition processing device respectively.
10. intelligent double speed oil recovery control device according to claim 4 it is characterised in that current transformer to include A phase electric
Current transformer, B phase current mutual inductor and C phase current mutual inductor, A phase current mutual inductor, B phase current mutual inductor and C phase current are mutual
The primary winding of sensor is set on A phase power line, B phase power line and the C phase power line of two-speed motor, A phase current
The binding post of the secondary coil of transformer, B phase current mutual inductor and C phase current mutual inductor respectively with data acquisition processing device
Signal input terminal electrical connection；Voltage transformer includes A phase voltage transformer, B phase voltage transformer and C phase voltage mutual inductance
Device, the binding post of the primary winding of A phase voltage transformer, B phase voltage transformer and C phase voltage transformer is electric with double speed respectively
The A phase power line of motivation, B phase power line and the electrical connection of C phase power line, A phase voltage transformer, B phase voltage transformer are electric with C phase
The binding post of the secondary coil of pressure transformer is electrically connected with the signal input terminal of data acquisition processing device respectively.
11. intelligent double speed oil recovery control devices according to claim 5 it is characterised in that current transformer to include A phase electric
Current transformer, B phase current mutual inductor and C phase current mutual inductor, A phase current mutual inductor, B phase current mutual inductor and C phase current are mutual
The primary winding of sensor is set on A phase power line, B phase power line and the C phase power line of two-speed motor, A phase current
The binding post of the secondary coil of transformer, B phase current mutual inductor and C phase current mutual inductor respectively with data acquisition processing device
Signal input terminal electrical connection；Voltage transformer includes A phase voltage transformer, B phase voltage transformer and C phase voltage mutual inductance
Device, the binding post of the primary winding of A phase voltage transformer, B phase voltage transformer and C phase voltage transformer is electric with double speed respectively
The A phase power line of motivation, B phase power line and the electrical connection of C phase power line, A phase voltage transformer, B phase voltage transformer are electric with C phase
The binding post of the secondary coil of pressure transformer is electrically connected with the signal input terminal of data acquisition processing device respectively.
12. intelligent double speed oil recovery control devices according to claim 6 it is characterised in that current transformer to include A phase electric
Current transformer, B phase current mutual inductor and C phase current mutual inductor, A phase current mutual inductor, B phase current mutual inductor and C phase current are mutual
The primary winding of sensor is set on A phase power line, B phase power line and the C phase power line of two-speed motor, A phase current
The binding post of the secondary coil of transformer, B phase current mutual inductor and C phase current mutual inductor respectively with data acquisition processing device
Signal input terminal electrical connection；Voltage transformer includes A phase voltage transformer, B phase voltage transformer and C phase voltage mutual inductance
Device, the binding post of the primary winding of A phase voltage transformer, B phase voltage transformer and C phase voltage transformer is electric with double speed respectively
The A phase power line of motivation, B phase power line and the electrical connection of C phase power line, A phase voltage transformer, B phase voltage transformer are electric with C phase
The binding post of the secondary coil of pressure transformer is electrically connected with the signal input terminal of data acquisition processing device respectively.
13. intelligent double speed oil recovery control devices according to claim 7 it is characterised in that current transformer to include A phase electric
Current transformer, B phase current mutual inductor and C phase current mutual inductor, A phase current mutual inductor, B phase current mutual inductor and C phase current are mutual
The primary winding of sensor is set on A phase power line, B phase power line and the C phase power line of two-speed motor, A phase current
The binding post of the secondary coil of transformer, B phase current mutual inductor and C phase current mutual inductor respectively with data acquisition processing device
Signal input terminal electrical connection；Voltage transformer includes A phase voltage transformer, B phase voltage transformer and C phase voltage mutual inductance
Device, the binding post of the primary winding of A phase voltage transformer, B phase voltage transformer and C phase voltage transformer is electric with double speed respectively
The A phase power line of motivation, B phase power line and the electrical connection of C phase power line, A phase voltage transformer, B phase voltage transformer are electric with C phase
The binding post of the secondary coil of pressure transformer is electrically connected with the signal input terminal of data acquisition processing device respectively.
14. intelligent double speed oil recovery control devices according to claim 1 and 2 are it is characterised in that pressure sensor includes oil
Pipe pressure sensor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor,
Upper position sensor is fixed on oil pumper body and can send signal during initial point position on balance weight is located at, and lower position passes
Sensor is fixed on oil pumper body and can send signal when balance weight is located at lower initial point position；Or/and, at data acquisition
It is pre- that the signal output terminal of reason device is electrically connected with the current analog output that can electrically connect with the control terminal of variable-frequency governor
Stay interface and voltage analog output spare interface.
15. intelligent double speed oil recovery control devices according to claim 3 are it is characterised in that pressure sensor includes oil pipe pressure
Force snesor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, upper
Put sensor to be fixed on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor
It is fixed on oil pumper body and signal can be sent when balance weight is located at lower initial point position；Or/and, data acquisition process fills
The signal output terminal put is electrically connected with the current analog that can be electrically connected with the control terminal of variable-frequency governor and exports reserved connecing
Mouth and voltage analog export spare interface.
16. intelligent double speed oil recovery control devices according to claim 4 are it is characterised in that pressure sensor includes oil pipe pressure
Force snesor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, upper
Put sensor to be fixed on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor
It is fixed on oil pumper body and signal can be sent when balance weight is located at lower initial point position；Or/and, data acquisition process fills
The signal output terminal put is electrically connected with the current analog that can be electrically connected with the control terminal of variable-frequency governor and exports reserved connecing
Mouth and voltage analog export spare interface.
17. intelligent double speed oil recovery control devices according to claim 5 are it is characterised in that pressure sensor includes oil pipe pressure
Force snesor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, upper
Put sensor to be fixed on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor
It is fixed on oil pumper body and signal can be sent when balance weight is located at lower initial point position；Or/and, data acquisition process fills
The signal output terminal put is electrically connected with the current analog that can be electrically connected with the control terminal of variable-frequency governor and exports reserved connecing
Mouth and voltage analog export spare interface.
18. intelligent double speed oil recovery control devices according to claim 6 are it is characterised in that pressure sensor includes oil pipe pressure
Force snesor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, upper
Put sensor to be fixed on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor
It is fixed on oil pumper body and signal can be sent when balance weight is located at lower initial point position；Or/and, data acquisition process fills
The signal output terminal put is electrically connected with the current analog that can be electrically connected with the control terminal of variable-frequency governor and exports reserved connecing
Mouth and voltage analog export spare interface.
19. intelligent double speed oil recovery control devices according to claim 7 are it is characterised in that pressure sensor includes oil pipe pressure
Force snesor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, upper
Put sensor to be fixed on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor
It is fixed on oil pumper body and signal can be sent when balance weight is located at lower initial point position；Or/and, data acquisition process fills
The signal output terminal put is electrically connected with the current analog that can be electrically connected with the control terminal of variable-frequency governor and exports reserved connecing
Mouth and voltage analog export spare interface.
20. intelligent double speed oil recovery control devices according to claim 8 are it is characterised in that pressure sensor includes oil pipe pressure
Force snesor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, upper
Put sensor to be fixed on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor
It is fixed on oil pumper body and signal can be sent when balance weight is located at lower initial point position；Or/and, data acquisition process fills
The signal output terminal put is electrically connected with the current analog that can be electrically connected with the control terminal of variable-frequency governor and exports reserved connecing
Mouth and voltage analog export spare interface.
21. intelligent double speed oil recovery control devices according to claim 9 are it is characterised in that pressure sensor includes oil pipe pressure
Force snesor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, upper
Put sensor to be fixed on oil pumper body and signal can be sent during initial point position on balance weight is located at, lower position sensor
It is fixed on oil pumper body and signal can be sent when balance weight is located at lower initial point position；Or/and, data acquisition process fills
The signal output terminal put is electrically connected with the current analog that can be electrically connected with the control terminal of variable-frequency governor and exports reserved connecing
Mouth and voltage analog export spare interface.
22. intelligent double speed oil recovery control devices according to claim 10 are it is characterised in that pressure sensor includes oil pipe
Pressure sensor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, on
Position sensor is fixed on oil pumper body and can send signal during initial point position on balance weight is located at, lower position sensing
Device is fixed on oil pumper body and can send signal when balance weight is located at lower initial point position；Or/and, data acquisition process
It is reserved that the signal output terminal of device is electrically connected with the current analog output that can electrically connect with the control terminal of variable-frequency governor
Interface and voltage analog output spare interface.
23. intelligent double speed oil recovery control devices according to claim 11 are it is characterised in that pressure sensor includes oil pipe
Pressure sensor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, on
Position sensor is fixed on oil pumper body and can send signal during initial point position on balance weight is located at, lower position sensing
Device is fixed on oil pumper body and can send signal when balance weight is located at lower initial point position；Or/and, data acquisition process
It is reserved that the signal output terminal of device is electrically connected with the current analog output that can electrically connect with the control terminal of variable-frequency governor
Interface and voltage analog output spare interface.
24. intelligent double speed oil recovery control devices according to claim 12 are it is characterised in that pressure sensor includes oil pipe
Pressure sensor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, on
Position sensor is fixed on oil pumper body and can send signal during initial point position on balance weight is located at, lower position sensing
Device is fixed on oil pumper body and can send signal when balance weight is located at lower initial point position；Or/and, data acquisition process
It is reserved that the signal output terminal of device is electrically connected with the current analog output that can electrically connect with the control terminal of variable-frequency governor
Interface and voltage analog output spare interface.
25. intelligent double speed oil recovery control devices according to claim 13 are it is characterised in that pressure sensor includes oil pipe
Pressure sensor and casing pressure sensor；Or/and, position sensor includes upper position sensor and lower position sensor, on
Position sensor is fixed on oil pumper body and can send signal during initial point position on balance weight is located at, lower position sensing
Device is fixed on oil pumper body and can send signal when balance weight is located at lower initial point position；Or/and, data acquisition process
It is reserved that the signal output terminal of device is electrically connected with the current analog output that can electrically connect with the control terminal of variable-frequency governor
Interface and voltage analog output spare interface.
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| WO2017208051A1 (en) * | 2016-05-29 | 2017-12-07 | Aplisens S.A. | Method for diagnosing technical condition of submersible pump unit |
| CN108868703A (en) * | 2018-06-27 | 2018-11-23 | 秦皇岛润麒自控设备有限公司 | It is a kind of to realize the automatic pumping unit automatic control equipment for adjusting ginseng without load transducer |
| CN110910618A (en) * | 2019-11-27 | 2020-03-24 | 河南省中原智能电气科技有限公司 | Data acquisition module of electrical system |
| CN111697537A (en) * | 2020-05-29 | 2020-09-22 | 中科合成油工程有限公司 | Multi-speed motor control protection circuit and multi-speed motor control protection method |
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| US5291777A (en) * | 1992-03-09 | 1994-03-08 | Intevep, S.A. | System for monitoring oil well performance |
| CN2648066Y (en) * | 2003-09-10 | 2004-10-13 | 郝正钧 | Data collecting, energy saving controlling apparatus for sucking oil machine |
| CN201118515Y (en) * | 2007-10-31 | 2008-09-17 | 沈阳海龙实业总公司 | Multi-shift control adjustable three phase asynchronous electromotor for oil drawer |
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