CN105094079A - Digital oil pumping unit control cabinet and control method - Google Patents
Digital oil pumping unit control cabinet and control method Download PDFInfo
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- CN105094079A CN105094079A CN201510213307.4A CN201510213307A CN105094079A CN 105094079 A CN105094079 A CN 105094079A CN 201510213307 A CN201510213307 A CN 201510213307A CN 105094079 A CN105094079 A CN 105094079A
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- 238000005086 pumping Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 50
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 230000001012 protector Effects 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 18
- 238000010586 diagram Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 8
- 239000003129 oil well Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 3
- 230000006870 function Effects 0.000 description 19
- 230000005540 biological transmission Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009711 regulatory function Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001484259 Lacuna Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013501 data transformation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides a digital oil pumping unit control cabinet and a control method. A controller is connected with a communication module, a load sensor, an angle displacement sensor, a limiting relay, a leveling control relay, a current transmitter, a control panel, a frequency converter, a start-stop control relay, a power supply module, a display module, and an electric quantity module, the communication module is connected with an antenna, the limiting relay is connected with a limiting signal transmitter, the current transmitter is connected with a balancing motor and a balancing motor AC contactor, the balancing motor AC contactor is connected with the leveling control relay, the leveling control relay is connected with the control panel, the start-stop control relay is connected with a first main motor power frequency device and a second main motor power frequency device, the first main motor power frequency device is connected with a motor comprehensive protector and a main motor, the second main motor power frequency device is connected with the main motor, the control panel is connected with the frequency converter, the frequency converter is connected with the second main motor power frequency device, a three-phase power supply device is connected with the frequency converter, the first main motor power frequency device, and a current transformer, and the current transformer is connected with the electric quantity module.
Description
Technical field
The present invention relates to a kind of digitizing oil pumping machine control cabinet and control method, belong to digitizing technique field, oil field.
Background technology
Oil field is since promotion and implementation digitizing oil field, and oil pumper, as the major equipment of oil-field development and big power consumer, has been a great concern.The new product that digitizing oil pumper is the problems such as, field construction difficulty large, Oil Field get angry, dynamic electric risk factor high, device integration low, each unit in charge of construction mounting means disunity large for installation workload in current digital Construction site operation and develops.Require that digitizing oil pumper meets following functions:
(1) system should possess the automatic acquisition function of oil well load, displacement and three phase electrical parameters;
(2) system should possess jig frequency regulatory function;
(3) system should possess quality of balance regulatory function;
(4) system should possess mair motor defencive function.
Therefore, under the geographical environment for oil field complexity, account for producing well sum 1/3, output in the stripper well operating mode of 1-2m3/d, a set of centerized fusion cabinet completing above-mentioned various functions need be designed.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of digitizing oil pumping machine control cabinet and control method.
A kind of digitizing oil pumping machine control cabinet and control method, containing following steps;
Step 1), data acquisition;
By service data, load-position diagram, map of current, power diagram that RTU, load transducer, angular displacement sensor, electricity quantity module, current transformer, display module collection are basic;
Jig frequency, quality of balance information is shown by display module; Display module is connected by RS485 with RTU;
Step 2), jig frequency adjustment, on off control, mair motor protection;
Realize jig frequency by RTU automatically to regulate and remote manual adjustment, realize the local manual adjustments of jig frequency by control panel;
Realized the on off control of oil pumper by RTU, control panel, on off control relay, A.C. contactor, realize long-range on off control by RTU, realize local on off control by control panel;
RTU, by the collection to motor electrical parameter and frequency converter state, controls oil pumper and abends under variable frequency work state, realize the protection to mair motor;
By the collection of RTU to motor electrical parameter, and the effect of comprehensive protector of motor, control oil pumper abending under power frequency state, realize the protection to mair motor;
Frequency converter is connected by RS485 with RTU, shares the same communication interface of RTU with display module;
Step 3), balance adjustment, balance motor protection;
Realize balance by RTU automatically to regulate, realize the local manual adjustments of balance by control panel;
RTU, by the collection to current transducer, can realize the current protection exchanging balance motor; The position limitation protection of balance motor can be realized by limit signal;
Step 4), data communication;
RTU realizes the communication with well site host RTU by communication module, antenna, then realizes the communication with host computer by well site host RTU;
Controller, by AI interface Real-time Collection load sensor, current transducer and angular displacement sensor signal, forms load-position diagram and map of current.
Also containing following steps;
Controller gathers header pressure unit by AI interface, calculates header pressure;
Controller gathers automatic, the manual adjustments state of jig frequency and quality of balance by DI interface, determines whether with this calculating that automatically adjusts;
Controller gathers the travel switch of balance adjustment motor by DI interface, when automatically regulating, and the running status of regulating and controlling;
Controller, by the outer contact relay of DO Interface Controller, directly can control the start and stop of oil pumper;
Controller, by the outer contact relay of DO Interface Controller, controls the operation of balancing motor;
Controller is connected with light-emitting diode display by RS485 interface, shows current jig frequency and current quality of balance; Communication protocol is ModbusRTU between the two, and wherein light-emitting diode display is slave station, and controller is main website;
Controller is connected with electricity quantity module by RS485 interface, main collection three electrical quantity certificates; Communication protocol is ModbusRTU between the two, and wherein electricity quantity module is slave station, and controller is main website;
Controller is connected with frequency converter by RS485 interface, the available Various types of data information of reading frequency converter, and by the start and stop of Frequency Converter Control oil pumper; Communication protocol is ModbusRTU between the two, and its middle controller is main website, and frequency converter is slave station;
Controller is connected with wireless communication module by RS232/RS485 interface, realizes the communication of itself and well site host RTU, and then the communication of realization and Ore-controlling Role of standing;
Controller is connected with alarm by AUDIO, and the start and stop realizing oil pumper are reported to the police;
Controller is powered by 24V Switching Power Supply, and the inner core circuit being controller by the 5V Switching Power Supply of isolation is again powered; 24V power supply is powered for instrument and I/O interface circuit simultaneously.
A kind of digitizing oil pumping machine control cabinet, controller 1 connecting communication module 2, load transducer 6, angular displacement sensor 7, limit relay 21, leveling pilot relay 9, current transducer 22, control panel 10, frequency converter 11, on off control relay 12, power module 3, display module 4 and electricity quantity module 5, communication module 2 connects antenna 8, limit relay 21 connects limit signal transmission 20, current transducer 22 connects balance motor 19, balance motor A.C. contactor 23, balance motor A.C. contactor 23 connects leveling pilot relay 9, leveling pilot relay 9 connection control panel 10, on off control relay 12 connects the first mair motor power frequency device 14, second mair motor power frequency device 13, first mair motor power frequency device 14 connects comprehensive protector of motor 17, mair motor 18, second mair motor power frequency device 13 connects mair motor 18, control panel 10 connects frequency converter 11, frequency converter 11 connects the second mair motor power frequency device 13, three phase supply device 16 connects frequency converter 11, first mair motor power frequency device 14, current transformer 15, current transformer 15 connects electricity quantity module 5.
A kind of digitizing oil pumping machine control cabinet, primarily of annex compositions such as control panel, frequency converter, RTU, power frequency and variable frequency control loop, braking resistors.
(1) control panel
Button, balance adjustment button and data disaply moudle etc. is regulated to form by power frequency and frequency conversion switching button, start button, stop button, reset button, jig frequency.
(2) frequency convertor system
Frequency convertor system is made up of frequency converter, brake unit and braking resistor etc., realizes that oil well jig frequency regulates automatically, the function such as soft starter for motor and intelligent protection.
(3) RTU system
RTU system is made up of RTU controller, voice module and data communication module etc., mainly completes the functions such as automatic adjustment, intelligent protection, remote data transmission, Long-distance Control.
(4) power frequency and variable frequency control loop
Be made up of the associated appliance such as relay, switch element, there is the defencive functions such as power frequency startup, stopping, overcurrent, overload, phase shortage.When frequency converter breaks down, system can automatically switch to power frequency state, realize oil pumper steadily, safe operation.
2, switch board function
2.1, data acquisition function
Oil well load, displacement and three automatic acquisition functions of electrical quantity, calculate load-position diagram, map of current, power diagram.
2.2, jig frequency regulatory function
(1) under the condition in given pump footpath, according to oil well merit figure, in certain scope, calculate oil well optimum jig frequency meeting conversion frequencies, and realize automatic jig frequency and regulate;
(2) manual adjustments jig frequency and remote manual adjusting stroke frequency on the spot can be realized.
2.3, quality of balance regulatory function
(1) according to the automatic calculated equilibrium degree of electric current, and realize automatically regulating, balance of well pumping unit degree is run in certain scope, and quality of balance computation period can remote setting.
(2) manual adjustments balance and remote manual adjustment on the spot can be realized.
2.4, mair motor defencive function
(1) current protection: in oil pumper operational process, the current value of RTU real time monitoring mair motor, if when electric current exceedes setting maximal value certain hour (overtime), then RTU controls mair motor and to power disconnection, out of service.
(2) comprehensive motor protecter protection: in oil pumper operational process, when there is the faults such as overload, overcurrent, overvoltage, short circuit, lacuna, overload, comprehensive motor protecter should be able to disconnect automatically, shields to motor.
2.5, balance motor defencive function function
(1) position limitation protection: in balance adjustment process, when counterbalance weight reaches the limit of position, will trigger limit switch, and by electrical equipment control loop, regulating relay be disconnected, and stop balance adjustment operation, protection motor.
(2) current protection: in adjustment process, RTU need monitor the current value of balancing motor, if electric current exceedes setting maximal value certain hour (overtime), then RTU regulating and controlling relay disconnects, and stops regulating.This kind of protected mode used when limit switch lost efficacy or when counterbalance weight is stuck.
2.6, operational mode handoff functionality
Possess power frequency and frequency conversion two kinds of mode of operations, and can realize automatically switching between power frequency and frequency conversion.
2.7, data-transformation facility
The PORT COM of RTU can support that RS485 wired mode transmits, and also can connect wireless data transmission module, carry out wireless transmission.
2.8, safeguard function
System should possess thunder-lightning, anti-power supply flash function, possesses motor overload protection, current limit, input phase failure detection, exports the defencive functions such as pile defection, acceleration overcurrent, deceleration overcurrent, constant speed overcurrent, Earth Fault Detection, heating radiator overload and load short circuits.
3, switch board hardware configuration
Switch board hardware configuration is shown in shown in accompanying drawing 1.
4, controller connection principle
4.1, controller (RTU) brief introduction
(1) technical indicator
Processor performance index: 32 technical grade processors, clock 48MHz, internal memory 512KFLASH128KRAM built-in 4M serial FLASH easily extensible data FLASH, easily extensible data ferroelectric RAM; Working temperature :-40 DEG C ~+85 DEG C; Embedded type C Programming with Pascal Language environment is provided.
(2) communication interface
1*RS232/485+1*RS485+1*RS232, all supports MODBUSRTU master-Slave Protocol, can customize communication protocol.
(3) I/O interface:
6 analog input+4 numeral input+6 numerals export
Analog input---6 tunnels
Input signal---4-20mA/0-20mA (Max25mA)
Input resistance---169 Ω
A/D resolution---16
Precision---± 0.1%F.S25 DEG C ± 0.2% full temperature scope
Digital quantity inputs---4 tunnels
Signal type---contact signal, level signal
Input signal---24V5mA
The limit inputs---and maximum 30VDC, minimum ON inputs 9VDC, and maximum OFF inputs 2VDC
Response time---open 7ms, close 24ms
Digital output---6 tunnels
Output signal---relay contact
Contact capacity--->DC24V1000mA
Response time---2ms
(4) working environment
Working temperature :-40 DEG C ~+70 DEG C, field;
Working power: 24VDC or 12VDC (24V instrument power can be provided)
Physical dimension: 209 (length) * 130 (wide) * 52 (thick)
Anti-interference Design: all external interfaces all have lightning protection Anti-interference Design, external communication interface all adopts Phototube Coupling.Possesses the harmonic wave interference performance of anti-frequency converter.EMC reaches A grade standard.
Degree of protection: IP45
Electric elements installation requirement in 4.6 cabinets
(1) wiring is according to the nominal insulation voltage determination insulated conductor of circuits in cabinet, and simple in circuits, attractive in appearance, mark
It is clear to paste.
(2) components and parts grafting is convenient, is easy to safeguard and change.
(3) guidance panel voltage is lower than the 36V personal safety voltage of national Specification.
(4) power frequency, frequency conversion loop are provided with isolating switch and contactor, and electricity consumption must (user reserves from power taking after main circuit breaker
Except socket).
(5) lightning protection adopts high-quality lightning-protection module, possesses that the response time is fast, discharge capacity is large, residual voltage is low, has job failure to refer to
Show, modular designs, hot-pluggable, conveniently carry out testing or changing, easy for installation, safeguard simple.
(6) line connection terminal quality and spacing meet oil field requirement, and the distance apart from base plate is not less than 100mm.
(7) cabinet integrated circuit meets RTU interface docking requirement.
(8) layout is reasonable, and operation is simple and reliable, safeguards easy and convenient.
(9) digitizing oil pumping machine control cabinet is not less than 5m apart from well head distance.
(10) load, displacement, limit switch signal line and balancing motor power cable needs use antifreeze wear-resistant cable.
To achieve these goals, the one side of the embodiment of the present invention, provides a kind of digitizing oil pumping machine control cabinet and comprises: power frequency device; Frequency convertor system, regulates and/or the intelligent protection of soft starter for motor and/or described digitizing oil pumper automatically for realizing oil well jig frequency; Power frequency and variable frequency control loop, be connected with described frequency convertor system respectively with described power frequency device, for controlling the duty of described power frequency device or described digitizing oil pumper being switched to power frequency state; RTU system, is connected with variable frequency control loop with described power frequency respectively with described power frequency device, described frequency convertor system, for controlling the carrying out of described digitizing oil pumper.
Further, described digitizing oil pumping machine control cabinet also comprises: control panel, is connected respectively with described RTU system with described frequency convertor system, described power frequency and variable frequency control loop.
Further, described RTU system comprises: controller; Communication module, is connected with described controller.
Further, described frequency convertor system comprises: frequency converter, brake unit and braking resistor, and wherein, described frequency converter is connected with described controller.
Further, described power frequency and variable frequency control loop comprise: limit relay, leveling pilot relay and on off control relay, be connected with described controller respectively, and wherein, described on off control relay is also connected with described power frequency device.
Further, described power frequency device comprises the first mair motor power frequency device and the second mair motor power frequency device, is connected respectively with described on off control relay.
To achieve these goals, the another aspect of the embodiment of the present invention, provides a kind of digitizing oil pumper control method and comprises: the service data gathering described digitizing oil pumper; Generate control signal according to the service data collected, utilize described control signal to control described digitizing oil pumper.
Further, control signal is generated according to the service data collected, utilize described control signal to carry out control to described digitizing oil pumper to comprise: realize jig frequency by RTU system and automatically regulate and/or remote manual adjustment, realize the local manual adjustments of jig frequency by control panel; And/or, realized the on off control of described digitizing oil pumper by described RTU system, described control panel, on off control relay, A.C. contactor, realize long-range on off control by described RTU system, realize local on off control by control panel; And/or described RTU system, by the collection to motor electrical parameter and frequency converter state, controls described digitizing oil pumper and quits work when variable frequency work state occurs abnormal; And/or, by described RTU system to the collection of motor electrical parameter, and the effect of comprehensive protector of motor, control described digitizing oil pumper and quit work when power frequency state occurs abnormal.
Advantage of the present invention is a kind of Novel control cabinet that can realize the functions such as data acquisition, jig frequency adjustment, quality of balance adjustment, mair motor protection, balance motor protection, operational mode switching, data transmission; make whole control system in good order, safeguard, convenient to operation.
Industrialization, standardized designs are carried out to digitizing oil pumping machine control cabinet, has met the designing requirement of Internet of Things, be applicable to the supporting digitizing oil pumper in oil field and use.Site test proves, pumping unit controller (L305) can realize the basic function of digitizing oil pumper, and stability is strong, compatible strong, antijamming capability is strong, and applicability is strong, meets the technical requirement such as collection, tune jig frequency, balancing, data transmission of Oilfield Company to datumization oil pumper.Switch board stable performance, safe and reliable, energy-saving and cost-reducing, easy to maintenance.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, wherein:
Fig. 1 is hardware configuration schematic diagram of the present invention.
Fig. 2 is cabinet body structure schematic diagram of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1 and Figure 2, a kind of digitizing oil pumping machine control cabinet, controller 1 connecting communication module 2, load transducer 6, angular displacement sensor 7, limit relay 21, leveling pilot relay 9, current transducer 22, control panel 10, frequency converter 11, on off control relay 12, power module 3, display module 4 and electricity quantity module 5, communication module 2 connects antenna 8, limit relay 21 connects limit signal transmission 20, current transducer 22 connects balance motor 19, balance motor A.C. contactor 23, balance motor A.C. contactor 23 connects leveling pilot relay 9, leveling pilot relay 9 connection control panel 10, on off control relay 12 connects the first mair motor power frequency device 14, second mair motor power frequency device 13, first mair motor power frequency device 14 connects comprehensive protector of motor 17, mair motor 18, second mair motor power frequency device 13 connects mair motor 18, control panel 10 connects frequency converter 11, frequency converter 11 connects the second mair motor power frequency device 13, three phase supply device 16 connects frequency converter 11, first mair motor power frequency device 14, current transformer 15, current transformer 15 connects electricity quantity module 5.
Controller 1, communication module 2, power module 3 are arranged on the upper strata of cabinet; first mair motor power frequency device 14, second mair motor power frequency device 13, current transformer 15 three phase supply device 16, comprehensive protector of motor 17, current transducer 22, current transducer 22, limit relay 21, frequency converter 11, pilot relay 12 are arranged on the middle level of cabinet, and terminal block 24 is arranged on the lower floor of cabinet.
A kind of digitizing oil pumping machine control cabinet and control method; be particularly suitable for digitizing oil pumper centralized control system, the functions such as data acquisition, jig frequency adjustment, quality of balance adjustment, mair motor protection, balance motor protection, operational mode switching, data transmission can be realized.
A kind of digitizing oil pumping machine control cabinet, hardware configuration illustrates:
(1) data acquisition
RTU, load transducer, angular displacement sensor, electricity quantity module, current transformer, display module form into basic data acquisition system (DAS), gather basic service data, load-position diagram, map of current, power diagram etc.
The information such as jig frequency, quality of balance is shown by display module.Display module is connected by RS485 with RTU.
(2) jig frequency adjustment, on off control, mair motor protection
The adjustment of RTU, frequency converter, on off control relay, mair motor frequency-changing AC contactor, mair motor industrial frequency AC contactor, control panel, comprehensive protector of motor composition jig frequency, on off control, mair motor protection system.
Realize jig frequency by RTU automatically to regulate and remote manual adjustment, realize the local manual adjustments of jig frequency by control panel.
Realized the on off control of oil pumper by RTU, control panel, on off control relay, A.C. contactor, realize long-range on off control by RTU, realize local on off control by control panel.
RTU, by the collection to motor electrical parameter and frequency converter state, controls oil pumper and abends under variable frequency work state, realize the protection to mair motor.
By the collection of RTU to motor electrical parameter, and the effect of comprehensive protector of motor, control oil pumper abending under power frequency state, realize the protection to mair motor.
Frequency converter is connected by RS485 with RTU, shares the same communication interface of RTU with display module.
(3) balance adjustment, balance motor protection
RTU, balancing pilot relay, balance motor A.C. contactor, current transducer, limit relay, control panel Compositional balance regulating system.
Realize balance by RTU automatically to regulate, realize the local manual adjustments of balance by control panel.
RTU, by the collection to current transducer, can realize the current protection exchanging balance motor.The position limitation protection of balance motor can be realized by limit signal.
(4) data communication
RTU realizes the communication with well site host RTU by communication module, antenna, then realizes the communication with host computer by well site host RTU.
Containing following steps;
(1) controller is by AI interface Real-time Collection load sensor, current transducer and angular displacement sensor signal, forms load-position diagram and map of current.
(2) controller gathers header pressure unit by AI interface, calculates header pressure.
(3) controller gathers automatic, the manual adjustments state of jig frequency and quality of balance by DI interface, determines whether with this calculating that automatically adjusts.
(4) controller gathers the travel switch of balance adjustment motor by DI interface, when automatically regulating, and the running status of regulating and controlling.
(5) controller is by the outer contact relay of DO Interface Controller, directly can control the start and stop of oil pumper.
(6) controller is by the outer contact relay of DO Interface Controller, controls the operation of balancing motor.
(7) controller is connected with light-emitting diode display by RS485 interface, shows current jig frequency and current quality of balance.Communication protocol is ModbusRTU between the two, and wherein light-emitting diode display is slave station, and controller is main website.
(8) data such as controller is connected with electricity quantity module by RS485 interface, main collection three electricity ginsengs.Communication protocol is ModbusRTU between the two, and wherein electricity quantity module is slave station, and controller is main website.
(9) controller is connected with frequency converter by RS485 interface, the available Various types of data information of reading frequency converter, and by the start and stop of Frequency Converter Control oil pumper.Communication protocol is ModbusRTU between the two, and its middle controller is main website, and frequency converter is slave station.
(10) controller is connected with wireless communication module by RS232/RS485 interface, realizes the communication of itself and well site host RTU, and then the communication of realization and Ore-controlling Role of standing.
(11) controller is connected with alarm by AUDIO, and the start and stop realizing oil pumper are reported to the police.
(12) controller is powered by 24V Switching Power Supply, and the inner core circuit being controller by the 5V Switching Power Supply of isolation is again powered.24V power supply is powered for instrument and I/O interface circuit simultaneously.
Upper strata is followed successively by wireless communication module, control module (RTU), electricity ginseng acquisition module (DCT) and RTU power supply 12/24V (G1).
In, lower floor is relay, A.C. contactor (KM), isolating switch (Q), fuse (FU), frequency converter (FC), threephase current transformer (TA), current transducer (CT), comprehensive protection device and connection terminal.
Connection terminal left end installs surge protector (FV) and fuse (FU).Connection terminal 100A is no less than 8, and 30A is no less than 3, and 15A is no less than 20, reserves multi-function jack at the right-hand member of connection terminal.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (12)
1. a digitizing oil pumper control method, is characterized in that, containing following steps;
Step 1), data acquisition;
By service data, load-position diagram, map of current, power diagram that RTU, load transducer, angular displacement sensor, electricity quantity module, current transformer, display module collection are basic;
By described display module display jig frequency, quality of balance information; Described display module is connected by RS485 with described RTU;
Step 2), jig frequency adjustment, on off control, mair motor protection;
Realize jig frequency by described RTU automatically to regulate and remote manual adjustment, realize the local manual adjustments of jig frequency by control panel;
Realized the on off control of oil pumper by described RTU, described control panel, on off control relay, A.C. contactor, realize long-range on off control by described RTU, realize local on off control by described control panel;
Described RTU, by the collection to motor electrical parameter and frequency converter state, controls described oil pumper and abends under variable frequency work state, realize the protection to described mair motor;
By the collection of described RTU to described motor electrical parameter, and the effect of comprehensive protector of motor, control described oil pumper abending under power frequency state, realize the protection to described mair motor;
Described frequency converter is connected by RS485 with described RTU, shares the same communication interface of RTU with described display module;
Step 3), balance adjustment, balance motor protection;
Realize balance by described RTU automatically to regulate, realize the local manual adjustments of balance by described control panel;
Described RTU, by the collection to current transducer, can realize the current protection exchanging balance motor; The position limitation protection of balance motor can be realized by limit signal;
Step 4), data communication;
Described RTU realizes the communication with well site host RTU by communication module, antenna, then realizes the communication with host computer by described well site host RTU;
Controller, by AI interface Real-time Collection load sensor, described current transducer and described angular displacement sensor signal, forms load-position diagram and map of current.
2. a kind of digitizing oil pumper control method according to claim 1, is characterized in that, containing following steps:
Described controller gathers header pressure unit by AI interface, calculates header pressure;
Described controller gathers automatic, the manual adjustments state of jig frequency and quality of balance by DI interface, determines whether with this calculating that automatically adjusts;
Described controller gathers the travel switch of balance adjustment motor by DI interface, when automatically regulating, and the running status of regulating and controlling;
Described controller, by the outer contact relay of DO Interface Controller, directly can control the start and stop of oil pumper;
Described controller, by the outer contact relay of DO Interface Controller, controls the operation of balancing motor;
Described controller is connected with light-emitting diode display by RS485 interface, shows current jig frequency and current quality of balance; Communication protocol is ModbusRTU between the two, and wherein light-emitting diode display is slave station, and controller is main website;
Described controller is connected with described electricity quantity module by RS485 interface, main collection three electrical quantity certificates; Communication protocol is ModbusRTU between the two, and wherein said electricity quantity module is slave station, and described controller is main website;
Described controller is connected with frequency converter by RS485 interface, the available Various types of data information of reading frequency converter, and by the start and stop of oil pumper described in described Frequency Converter Control; Communication protocol is ModbusRTU between the two, and wherein said controller is main website, and described frequency converter is slave station;
Described controller is connected with wireless communication module by RS232/RS485 interface, realizes the communication of itself and described well site host RTU, and then the communication of realization and Ore-controlling Role of standing;
Described controller is connected with alarm by AUDIO, and the start and stop realizing oil pumper are reported to the police;
Described controller is powered by 24V Switching Power Supply, and the inner core circuit being described controller by the 5V Switching Power Supply of isolation is again powered; 24V power supply is powered for instrument and I/O interface circuit simultaneously.
3. a digitizing oil pumping machine control cabinet, it is characterized in that, controller (1) connecting communication module (2), load transducer (6), angular displacement sensor (7), limit relay (21), leveling pilot relay (9), current transducer (22), control panel (10), frequency converter (11), on off control relay (12), power module (3), display module (4) and electricity quantity module (5), communication module (2) connects antenna (8), limit relay (21) connects limit signal transmission (20), described current transducer (22) connects balance motor (19), balance motor A.C. contactor (23), described balance motor A.C. contactor (23) connects described leveling pilot relay (9), described leveling pilot relay (9) connects described control panel (10), described on off control relay (12) connects the first mair motor power frequency device (14), second mair motor power frequency device (13), described first mair motor power frequency device (14) connects comprehensive protector of motor (17), mair motor (18), described second mair motor power frequency device (13) connects described mair motor (18), described control panel (10) connects described frequency converter (11), described frequency converter (11) connects described second mair motor power frequency device (13), three phase supply device (16) connects described frequency converter (11), described first mair motor power frequency device (14), current transformer (15), described current transformer (15) connects described electricity quantity module (5).
4. a kind of digitizing oil pumping machine control cabinet according to claim 3, it is characterized in that described controller (1), described communication module (2), described power module (3) is arranged on the upper strata of cabinet, described first mair motor power frequency device (14), described second mair motor power frequency device (13), described current transformer (15), described three phase supply device (16), described comprehensive protector of motor (17), described current transducer (22), described limit relay (21), described frequency converter (11), described on off control relay (12) is arranged on the middle level of cabinet, terminal block (24) is arranged on the lower floor of cabinet.
5. a digitizing oil pumping machine control cabinet, is characterized in that, comprising:
Power frequency device;
Frequency convertor system, regulates and/or the intelligent protection of soft starter for motor and/or described digitizing oil pumper automatically for realizing oil well jig frequency;
Power frequency and variable frequency control loop, be connected with described frequency convertor system respectively with described power frequency device, for controlling the duty of described power frequency device or described digitizing oil pumper being switched to power frequency state;
RTU system, is connected with variable frequency control loop with described power frequency respectively with described power frequency device, described frequency convertor system, for controlling the carrying out of described digitizing oil pumper.
6. digitizing oil pumping machine control cabinet according to claim 5, is characterized in that, described digitizing oil pumping machine control cabinet also comprises:
Control panel, is connected with described RTU system respectively with described frequency convertor system, described power frequency and variable frequency control loop.
7. the digitizing oil pumping machine control cabinet according to claim 5 or 6, is characterized in that, described RTU system comprises:
Controller (1);
Communication module (2), is connected with described controller (1).
8. digitizing oil pumping machine control cabinet according to claim 7, it is characterized in that, described frequency convertor system comprises: frequency converter (11), brake unit and braking resistor, and wherein, described frequency converter (11) is connected with described controller (1).
9. digitizing oil pumping machine control cabinet according to claim 7, it is characterized in that, described power frequency and variable frequency control loop comprise: limit relay (21), leveling pilot relay (9) and on off control relay (12), be connected with described controller (1) respectively, wherein, described on off control relay (12) is also connected with described power frequency device.
10. digitizing oil pumping machine control cabinet according to claim 9, it is characterized in that, described power frequency device comprises the first mair motor power frequency device (14) and the second mair motor power frequency device (13), is connected respectively with described on off control relay (12).
11. 1 kinds of digitizing oil pumper control methods, is characterized in that, comprising:
Gather the service data of described digitizing oil pumper;
Generate control signal according to the service data collected, utilize described control signal to control described digitizing oil pumper.
12. digitizing oil pumper control method according to claim 11, is characterized in that, generate control signal according to the service data collected, utilize described control signal to carry out control to described digitizing oil pumper and comprise:
Realize jig frequency by RTU system automatically to regulate and/or remote manual adjustment, realize the local manual adjustments of jig frequency by control panel; And/or
Realized the on off control of described digitizing oil pumper by described RTU system, described control panel, on off control relay, A.C. contactor, realize long-range on off control by described RTU system, realize local on off control by control panel; And/or
Described RTU system, by the collection to motor electrical parameter and frequency converter state, controls described digitizing oil pumper and quits work when variable frequency work state occurs abnormal; And/or
By described RTU system to the collection of motor electrical parameter, and the effect of comprehensive protector of motor, control described digitizing oil pumper and quit work when power frequency state occurs abnormal.
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| CN201510213307.4A CN105094079B (en) | 2014-05-14 | 2015-04-29 | One kind digitlization oil pumping machine control cabinet and control method |
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| CN2014102040215 | 2014-05-14 | ||
| CN201510213307.4A CN105094079B (en) | 2014-05-14 | 2015-04-29 | One kind digitlization oil pumping machine control cabinet and control method |
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| CN105094079B CN105094079B (en) | 2018-02-02 |
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