CN205977192U - Intermediate frequency electrical heating oil production device of PLC control - Google Patents
Intermediate frequency electrical heating oil production device of PLC control Download PDFInfo
- Publication number
- CN205977192U CN205977192U CN201620935207.2U CN201620935207U CN205977192U CN 205977192 U CN205977192 U CN 205977192U CN 201620935207 U CN201620935207 U CN 201620935207U CN 205977192 U CN205977192 U CN 205977192U
- Authority
- CN
- China
- Prior art keywords
- unit
- control unit
- plc
- plc control
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model relates to an intermediate frequency electrical heating oil production device of PLC control, including handing over straight hand over frequency converting circuit, measuring and protection control unit, PLC the control unit, isolating driver unit, communication unit, touch screen display to show operational unit, PLC the control unit is control core, and PLC the control unit and measuring show with protection control unit, isolating driver unit, communication unit, touch screen display that operational unit is connected. The advantage is: compact structure, the integrated level is higher, has improved power efficiency, and energy saving and consumption reduction has reduced manufacturing cost, and the security is good, and the reliability is high, and the conversion efficiency is high, does not have harmful effects, abundant improve equipment availability to the electric wire netting. The intermediate frequency heating power adopts to be handed over straight the reversal is inversion technology frequently, and the inlet side is three -phase uncontrollable rectification, LC filtering, has overcome power three -phase laod unbalance problem, has improved inlet wire power factor, does not all have harmful effects to electric wire netting wave form and adjustment.
Description
Technical field
This utility model is related to the medium-frequency electrical heating extracting device of oil that a kind of PLC controls, and more particularly, to one kind is used for hollow stem
The medium-frequency electrical heating extracting device of oil of oil pumping.
Background technology
China's part oil field is belonging to viscous crude or high solidifying oil." the hollow rod electrical heating of the twentieth century rise nineties
Technology " reduces the difficulty of thickened oil recovery to a certain extent.Ultimate principle is overall special by entering under hollow stem endoporus
Cable, makes cable and hollow stem inwall constitute loop through terminal organ, plus single phase industrial frequence alternating current, and heating voltage 350～700V divides
Section is adjustable, because frequency ratio is relatively low, mainly passes through to heat cable and heated hollow rod to viscous crude and the high heat coagulating oil
Heating, viscosity reducing is realized in conduction.From the point of view of producing, this technology served very important effect at that time, improve collection
The efficiency of viscous crude, reduces cost of winning.
But it is clearly disadvantageous that this technology has some in the application：
(1) efficiency of heating surface is not high.Hollow rod single phase industrial frequence heating technique compared with other various physical heating technology,
Really there is higher efficiency.But work frequency is low, kelvin effect is poor, actually mainly uses impedance heated viscous crude, sense
The eddy current effect answered is not notable, and therefore the efficiency of heating surface is relatively low, and power consumption is very serious, the daily power consumption of every mouthful of well 1500～
2000kW·h.
(2) impact electrical network being caused is big.Because this technology adopts single phase ac electrical heating, practical power is generally taken out
3～4 times of oil machine practicality power.Two kinds of loads of ratio so great disparity are connected in same three phase network and run it is clear that can lead
Cause the imbalance of three-phase power distribution system.
(3) utilization rate of equipment available capacity is low.Equipment available capacity utilization rate refers to the reality of the rated capacity of equipment
Utilization rate.Single phase industrial frequence heater transformator is at least 120kW, and pumping-unit motor distribution transformer is 100kW, and equipment always holds
Measure as 220kW.It can be seen that, the equipment available capacity utilization rate of single phase industrial frequence heater is only 40% about.
(4) inconvenient operation.Power frequency heating power supply is the mode using power frequency phase shift superposition, by changing Transformer Winding
Adjusting output, power adjustments can not be continuous for tap；The replacing of electric pressure tap must be by special human users.
Summary shortcoming, needs one kind can improve the efficiency of heating surface, and does not have dysgenic secure side to electrical network
Formula method.
Content of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide the medium-frequency electrical heating that a kind of PLC controls to adopt
Oily device, improves the efficiency of heating surface, and electrical network does not have harmful effect.
For achieving the above object, this utility model is achieved through the following technical solutions：
The medium-frequency electrical heating extracting device of oil that a kind of PLC controls, single with protection control including ac-dc-ac inverter circuit, detection
Unit, PLC control unit, isolation drive unit, communication unit, touch screen display operating unit, PLC control unit is to control core
The heart, PLC control unit and detection and protection control unit, isolation drive unit, communication unit, touch screen display operating unit phase
Connect；
Described ac-dc-ac inverter circuit includes uncontrollable rectifier unit, filtering voltage regulation unit, PWM inversion unit, does not control
Rectification unit, filtering voltage regulation unit, PWM inversion unit are connected with isolation drive unit after being sequentially connected；
Described detection includes voltage detecting, current detecting, temperature detection with protection control unit, and voltage detecting is to through filter
DC side after ripple voltage regulation unit carries out real-time monitoring, and detection signal is sent to PLC control unit；Current detecting is to through filter
DC side after ripple voltage regulation unit all carries out real-time monitoring with the AC after PWM inversion unit, and detection signal is sent
To PLC control unit；Temperature detection is connected with load, the temperature of load is monitored, and detection signal is sent to PLC
Control unit；
Be connected with the PWM inversion unit of ac-dc-ac inverter circuit on front side of described isolation drive unit, rear side with negative
Load is connected.
Described communication unit is wire communication and wireless telecommunications, and PLC control unit passes through EPA or wireless
WIFI is connected with host computer.
Described touch screen display operating unit is connected with PLC control unit by RS485 interface.
The core parts of described PLC control unit are S7-200SMART series of PLC controller.
Compared with prior art, the beneficial effects of the utility model are：
Compact conformation, integrated level is higher, improves power-efficient, energy-saving, reduces production cost, and safety is good,
Reliability is high, and conversion efficiency is high, and electrical network is had no adverse effects, and fully improves equipment effective rate of utilization.The S7- of Siemens Company
200SMART series of PLC controller is with high-speed pulse function, communication function, digital quantity analog input and output function, expansion
The programmable logic controller (PLC) of exhibition function.Medium frequency heating power source adopts ac-dc-ac inverter inversion transformation technique, and input side is for three-phase not
Controlled rectification, LC filtering, overcome power supply threephase load imbalance problem, improve inlet wire power factor, to network wave and
Degree of balance all has no adverse effects.
Brief description
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is PLC pulse generation figure.
Specific embodiment
With reference to Figure of description, this utility model is described in detail, it should be noted that of the present utility model
Implement to be not limited to following embodiment.
See Fig. 1, the medium-frequency electrical heating extracting device of oil that PLC controls, control including ac-dc-ac inverter circuit, detection and protection
Unit, PLC control unit, isolation drive unit, communication unit, touch screen display operating unit, PLC control unit is to control core
The heart, PLC control unit and detection and protection control unit, isolation drive unit, communication unit, touch screen display operating unit phase
Connect；
Wherein, ac-dc-ac inverter circuit includes uncontrollable rectifier unit, filtering voltage regulation unit, PWM inversion unit, does not control whole
Stream unit, filtering voltage regulation unit, PWM inversion unit are connected with isolation drive unit after being sequentially connected；
Detection includes voltage detecting, current detecting, temperature detection with protection control unit, and voltage detecting is to filtered voltage stabilizing
DC side after unit carries out real-time monitoring, and detection signal is sent to PLC control unit；Current detecting is to filtered voltage stabilizing
DC side after unit all carries out real-time monitoring with the AC after PWM inversion unit, and detection signal is sent to PLC control
Unit processed；Temperature detection is connected with load, and the temperature of load is monitored, and it is single that detection signal is sent to PLC control
Unit；
It is connected with the PWM inversion unit of ac-dc-ac inverter circuit on front side of isolation drive unit, rear side is connected with load
Connect.
Communication unit is wire communication and wireless telecommunications, PLC control unit pass through EPA or wireless WIFI with upper
Position machine is connected.Touch screen display operating unit is connected with PLC control unit by RS485 interface.
The core parts of PLC control unit are S7-200SMART series of PLC controller, preferably S7-200ST40SMART,
Analog quantity signal read module adopts the EM AI04 of Siemens Company.
The core parts of current detecting are Hall current sensor：A-CS200-B/4V.
Isolation drive unit adopts voltage isolator HEC 800V-F3 (Baoding Hall Electronics Co., Ltd.), also can be by it
He replaces similar products；Temperature detection is mainly detected using temperature sensor WZP-131, and configures temperature signal accordingly
Isolator PA-1482 (Jiaxing Fu Erwo Electronics Co., Ltd.), also can be replaced by other similar products.
See Fig. 1, PLC control unit, as the intelligentized control method core of whole system, is continuously passed through detection and protected
Shield control unit carries out the fault detect of system, to the voltage of system dc side, electric current, the electric current of AC and wellhead temperature
Carry out real-time monitoring etc. parameter, and then the working condition of system is carried out with comprehensive descision, and by changing pulse output duty cycle
To change the working condition of PWM inversion unit, to realize its voltage and current is implemented smooth control.Detection and protection control single
Unit realizes the protection to this device, to complete the monitoring to equipment running status, the exception feelings such as excessively stream, under-voltage, phase shortage
Under condition, sound and light alarm is automatically sent by communication unit, and operating unit display alarm content is shown by touch screen；Feedback temperature
The parameters such as degree, electric current, carry out PID arithmetic by PLC control unit, realize the closed loop control of system.
The function of PLC control unit includes：Before system start-up, the reading to parameter, examines to system mode during startup
Disconnected, judge whether to meet system operation conditions.In the case of diagnosis is normal, soft start runs.By the built-in pulse generation of CPU
Function, produces pwm pulse control signal, so that IGBT is worked through impulse modulation panel and IGBT driving plate.According to oil well well
Condition, by adjusting pulse output duty cycle, setting adjusts frequency and the voltage of output.The temperature being provided according to testing circuit and electricity
Stream signal, carries out PID arithmetic by PLC control unit, realizes the closed loop control of system.After system jam, rapid cut-out
Pulse, to protect the safety of the hardware such as IGBT, and continues detecting system state again, when satisfaction is again started up condition, can be real
Existing unmanned self-starting.By universal serial bus or EPA and upper machine communication, send system operation ginseng to host computer
Number, receives and executes the control instruction that host computer is sent, realize the remotely control of system.
PLC pulse exports logic：See Fig. 2.PLC export 2 tunnel pulses, the 1st tunnel be frequency be setpoint frequency, dutycycle 50%
Square wave as reference wave, the 2nd tunnel be frequency be 2 times of setpoint frequency, the adjustable square wave of dutycycle.Pulse modulated panel is patrolled
Export forward and reverse trigger pulse of IGBT after collecting computing respectively, finally make the frequency continuously adjustabe of PWM inversion unit, dutycycle is even
Continuous adjustable, realize adjusting the requirement (in Fig. 2, actual adjustable) of output frequency and voltage taking 500Hz as a example.
This utility model improves the efficiency of heating surface：Medium frequency heating power source improves the output frequency of heating power supply.On the one hand,
From eddy current effect angle, frequency is higher, and effective heating power is higher；On the other hand, crude oil is in the presence of intermediate frequency strong-electromagnetic field,
The lattice of viscous crude molecular chain structure and high solidifying oil creates physical change, and this change is objectively serving acceleration molecular motion
Effect, with plus thermogenetic thermal effect just coincide.Many mouthfuls of heavy oil wells produced on-site tests also indicate that, compare under operating mode of the same race
Power frequency electric heating oil recovery energy-saving effect is obvious.
Electrical network is had no adverse effects：Medium frequency heating power source adopts ac-dc-ac inverter inversion transformation technique, and input side is for three-phase not
Controlled rectification, LC filtering, overcome power supply threephase load imbalance problem, improve inlet wire power factor, to network wave and
Degree of balance all has no adverse effects.
Control safe ready：It is controlled by PLC, the speed of service is fast, is quick on the draw, simply square using touch screen operation
Just, intuitive display, and have various fault alarms, autostop and self- recoverage startup function, reliability is high.
Claims (3)
1. a kind of PLC controls medium-frequency electrical heating extracting device of oil it is characterised in that include ac-dc-ac inverter circuit, detection with
Protection control unit, PLC control unit, isolation drive unit, communication unit, touch screen display operating unit, PLC control unit
For control core, PLC control unit and detection and protection control unit, isolation drive unit, communication unit, touch screen display behaviour
It is connected as unit；
Described ac-dc-ac inverter circuit includes uncontrollable rectifier unit, filtering voltage regulation unit, PWM inversion unit, uncontrollable rectifier
Unit, filtering voltage regulation unit, PWM inversion unit are connected with isolation drive unit after being sequentially connected；
Described detection includes voltage detecting, current detecting, temperature detection with protection control unit, and voltage detecting is to filtered steady
DC side after pressure unit carries out real-time monitoring, and detection signal is sent to PLC control unit；Current detecting is to filtered steady
DC side after pressure unit and the AC after PWM inversion unit all carry out real-time monitoring, and detection signal is sent to PLC
Control unit；Temperature detection is connected with load, the temperature of load is monitored, and detection signal is sent to PLC control
Unit；
Be connected with the PWM inversion unit of ac-dc-ac inverter circuit on front side of described isolation drive unit, rear side and load phase
Connect.
2. the medium-frequency electrical heating extracting device of oil that a kind of PLC according to claim 1 controls is it is characterised in that described is logical
News unit is wire communication and wireless telecommunications, and PLC control unit is connected with host computer by EPA or wireless WIFI.
3. the medium-frequency electrical heating extracting device of oil that a kind of PLC according to claim 1 controls is it is characterised in that described touches
Touch screen display operating unit to be connected with PLC control unit by RS485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935207.2U CN205977192U (en) | 2016-08-25 | 2016-08-25 | Intermediate frequency electrical heating oil production device of PLC control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935207.2U CN205977192U (en) | 2016-08-25 | 2016-08-25 | Intermediate frequency electrical heating oil production device of PLC control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977192U true CN205977192U (en) | 2017-02-22 |
Family
ID=58034640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620935207.2U Expired - Fee Related CN205977192U (en) | 2016-08-25 | 2016-08-25 | Intermediate frequency electrical heating oil production device of PLC control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181492A (en) * | 2019-07-07 | 2019-08-30 | 广州金世福珠宝有限公司 | A kind of artificial intelligence machinery arm Platform Alliance operating facilities |
| CN110651101A (en) * | 2017-05-01 | 2020-01-03 | 斯伦贝谢技术有限公司 | Integrated drilling machine |
-
2016
- 2016-08-25 CN CN201620935207.2U patent/CN205977192U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110651101A (en) * | 2017-05-01 | 2020-01-03 | 斯伦贝谢技术有限公司 | Integrated drilling machine |
| CN110181492A (en) * | 2019-07-07 | 2019-08-30 | 广州金世福珠宝有限公司 | A kind of artificial intelligence machinery arm Platform Alliance operating facilities |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102491137A (en) | Double digital signal processor(DSP)-based elevator drive, control and energy conservation integrated system and method | |
| CN102001558B (en) | Control system integrating elevator control, driving and energy feedback | |
| CN106226632A (en) | A kind of motor variable-frequency driver aging testing system and method for testing thereof | |
| CN101217260A (en) | A slip control digital intelligent speed regulation and system of motor without speed transducer | |
| CN2899283Y (en) | Control cabinet of oil sucker | |
| CN205977192U (en) | Intermediate frequency electrical heating oil production device of PLC control | |
| CN103427729A (en) | Rod pumped well group control system based on direct current bus | |
| CN219611628U (en) | Synchronous energy-saving control system of ultra-long stroke oil pumping unit | |
| CN111935352B (en) | BLDC remote control system of wide-bandgap semiconductor device based on mobile phone APP Bluetooth | |
| CN206057460U (en) | A kind of motor variable-frequency driver aging testing system | |
| CN208141201U (en) | A kind of oil pump energy-saving control circuit based on oilwell produced fluid amount monitoring | |
| CN202143028U (en) | Frequency conversion speed regulating control device of three-phase alternating current asynchronous motor | |
| CN201146481Y (en) | Medium-voltage motor slip-control digital intelligence speed-regulating device without speed sensor | |
| CN204947946U (en) | A kind of intelligent controlling system for beam-pumping unit adopting technology of Internet of things | |
| CN2879212Y (en) | New high-voltage transducer low energy consuming load testing device | |
| CN201901495U (en) | Control system integrating elevator control, drive and energy feedback | |
| CN201536334U (en) | Chopped-controlled three-phase AC motor energy-saving controller | |
| CN100384082C (en) | Method and apparatus for controlling AC induction motor energy-saving operation | |
| CN210807129U (en) | Rectifier and low-voltage inverter array power supply system | |
| CN205566130U (en) | Polarization rectifier device based on DSP | |
| CN202713164U (en) | Thickened oil electric thermal recovery heating power supply with fault diagnosing and warning functions | |
| CN201260147Y (en) | Power-saving controller for motor | |
| CN203257385U (en) | Medium frequency electric heating oil sampling device | |
| CN205546008U (en) | Two DSP+FPGA architecture of digital parallelly connected induction heating power | |
| CN206313696U (en) | A kind of general motor control device based on double-closed-loop control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20190825 |