CN107592689A - A kind of intelligent heating dual frequency power supplies heater - Google Patents
A kind of intelligent heating dual frequency power supplies heater Download PDFInfo
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- CN107592689A CN107592689A CN201610528224.9A CN201610528224A CN107592689A CN 107592689 A CN107592689 A CN 107592689A CN 201610528224 A CN201610528224 A CN 201610528224A CN 107592689 A CN107592689 A CN 107592689A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 54
- 230000009977 dual effect Effects 0.000 title claims abstract description 17
- 238000002955 isolation Methods 0.000 claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000010304 firing Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The present invention relates to oil recovery technique development and application, mainly for the heating in viscous crude lifting process and heat tracing, more particularly, to a kind of intelligent heating dual frequency power supplies heater, it is made up of three-phase alternating-current supply, three-phase isolation transformer, rectification circuit, filter circuit, direct current absorption resistance, controlling switch, inverter circuit and heating cable for heating load.The present invention uses double frequency technology, and firing rate is fast, effectively solves the problems, such as the electrolysis of DC heating.
Description
Technical field
The present invention relates to oil recovery technique development and application, mainly for the heating in viscous crude lifting process and heat tracing, more particularly, to a kind of intelligent heating dual frequency power supplies heater.
Background technology
At present, it is to be based on kelvin effect principle mostly, using cable is heated to being heated to the hollow stem in oil well, its operation principle is in oil exploitation to the heating in viscous crude lifting process：Three-phase alternating-current supply first passes around rectification and inputs intermediate-frequency transformer after inversion again, and afterwards by accessing the heating cable being wrapped on hollow stem after intermediate-frequency transformer isolation and amplifier, hollow stem is heated using cable is heated.With reference to《The structure and working principle of intermediate frequency induction heating device》One text is it is known that the principle of its heating is：Dual frequency power supplies are formed using above-mentioned heater, the electric current of changeable frequency is provided to heating cable, and the heat for being used to heat hollow stem is produced by faradic fuel factor on hollow stem, therefore firing rate is fast, it is ideal heating means, intermediate-frequency transformer setting why will be provided between the ac output end of inverter circuit and heating cable and is to be able to obtain larger heated current.
Although above-mentioned technical proposal solves above-mentioned technical problem to a certain extent, it is urgently to be resolved hurrily that its own still has many technological deficiencies, specific as follows：Defect one：The frequency of intermediate-frequency transformer can not be adjusted arbitrarily；Defect two：Noise pollution is too big；Defect four：It is inconvenient for operation；Defect five：Workload is big during installation.Therefore above-mentioned analysis is based on, dual frequency power supplies structure used urgently adjusts in the prior art.
The content of the invention
The present invention is solves the problems, such as to provide a kind of intelligent heating dual frequency power supplies heater in above-mentioned background technology.
The present invention is further solves the problems, such as to provide a kind of intelligent heating dual frequency power supplies heater in above-mentioned background technology, it is made up of three-phase alternating-current supply, three-phase isolation transformer, rectification circuit, filter circuit, direct current absorption resistance, controlling switch, inverter circuit and heating cable for heating load, wherein：Three-phase alternating-current supply connects the first siding ring of three-phase isolation transformer, the output of the second siding ring of three-phase isolation transformer connects the ac input end of rectification circuit respectively, the DC side output of rectification circuit is connected on filter circuit, the DC side input of another side joint inverter circuit of filter circuit, the AC output of inverter circuit connects heating cable, controlling switch is provided between the filter circuit and inverter circuit and the controlling switch both ends are parallel with direct current absorption resistance, and the inverter circuit is controlled by control device.
In the power supply heater, three-phase alternating-current supply is as initial input, there is provided basic electric energy.
Three-phase isolation transformer, as critical component, in view of it is between the three-phase alternating-current supply and rectification circuit, therefore pollution of the rectifying installation triple-frequency harmonics to power network can be effectively isolated；Simultaneously, compared in the prior art directly by for the first siding ring of the ac output end access intermediate-frequency transformer of inverter circuit, three-phase isolation transformer is arranged between the three-phase alternating-current supply and rectification circuit by the present invention, sound using power frequency 50Hz inputs in the absence of tone currents, therefore can effectively eliminate alternating current noise pollution caused by under intermediate frequency because of inverter circuit.
In addition, in the prior art, operator generally requires to increase power according to the output voltage of well depth adjustment intermediate-frequency transformer, and it is very inconvenient to operate.But,Based on above-mentioned technical proposal,Using during heating cable by eddy current effect heating load,If desired heating power is increased according to well depth,Operator can be realized by the frequency for the output end for adjusting inverter circuit,Because once change the frequency at the exchange end of inverter circuit,Heating cable and the induction reactance of load (being usually hollow stem) can be changed,So as to reduce perceptual heating,Increase resistive heating,And in view of the thermal efficiency of resistive heating close to 1,Therefore operator is without gear shift,I.e. without the output voltage by changing transformer,But the change of heating power is completed by the frequency for the output end for changing inverter circuit,Therefore would not bring causes to heat the risk that cable insulation declines in this case because of voltage increase,Extend the service life of heating cable,Greatly reduce the probability of short circuit accident generation,So as to greatly improve the stability of whole system.
Filter circuit, it act as the fluctuation for suppressing the voltage and current of rectification circuit output, provides a stable voltage and current for inverter circuit, while also suppress interference of the inverter circuit to rectification circuit.
Inverter circuit, direct current energy is converted into AC energy, and it is transported to load, each device (IGBT) in control inverter circuit is turned on and off by control device, the output frequency at the exchange end of i.e. adjustable inverter circuit, heating cable is directly accessed in view of the output end of inverter circuit in the present invention, eliminates intermediate-frequency transformer.
Improvement based on above-mentioned technical proposal, even if eliminating intermediate-frequency transformer, operator increases heating power by adjusting the frequency of the output end of inverter circuit and remaining able to realize according to well depth, and the efficiency of heating surface remains able to meet actual demand.In addition, improved based on technique, the actual heating frequency scope of inverter circuit can reach 5~6000Hz, as heat cable and the dual frequency power supplies that frequency range is 5~6000Hz are provided, compared to the dual frequency power supplies for being limited to intermediate-frequency transformer in the prior art, the adaptability of dual power supply provided by the present invention is greatly enhanced.
Controlling switch is D.C. contactor, and its both ends is parallel with direct current absorption resistance, for absorbing Partial DC electric energy.
It should be noted that, because eliminate intermediate-frequency transformer between the ac output end and heating cable of inverter circuit, compared to existing technologies, the actual quantity for the accessory installed invention further reduces the ac output end of inverter circuit, on the one hand electric energy is cost savings, operator is on the other hand also cost savings and winds intermediate-frequency transformer and adjust some series of problems such as electrodeless electric capacity resonance.
Further; the control device includes single chip control unit; the single chip control unit is electrically connected with keyboard display unit, detection protection location, parameter storage unit and serial communication unit, and the single chip control unit, detection protection location, keyboard display unit, driver element, parameter storage unit and serial communication unit are powered by power circuit；
The single chip control unit includes single-chip computer control system；
The detection protection location includes voltage detection module, current detection module, temperature detecting module and isolation drive module, the voltage detection module detects the magnitude of voltage after voltage stabilizing after filtering and passes to the single-chip computer control system, the current detection module detects the current value after voltage stabilizing after filtering and passes to the single-chip computer control system, the single-chip computer control system starts isolation drive module when detecting magnitude of voltage and current value exception, circuit is protected, temperature in the temperature detecting module detection load, and pass to the single-chip computer control system；
The keyboard display unit includes keyboard operation module and LED display module, the keyboard operation module can input to numerical value the single-chip computer control system, and the LED display module shows the numerical value that the voltage detection module, current detection module and temperature detecting module detect.
Preferably, the three-phase isolation transformer is delta transformer, you can the actual space-consuming of the present invention is greatly reduced, so as to strengthen the applicability of the present invention.
Preferably, the tap of some corresponding country variant normal voltages is provided with the three-phase isolation transformer, you can relax the requirement to input voltage range.
Except it is described above present invention solves the technical problem that, form technical scheme technical characteristic and the advantage as caused by the technical characteristic of these technical schemes in addition to, other technologies problem that the present invention can solve, the other technical characteristics included in technical scheme and advantage caused by these technical characteristics, will be described in further detail with reference to accompanying drawing.
The dual frequency power supplies studied based on technical scheme, are had the advantages and positive effects of：
(1) present apparatus can arbitrarily be set according to heating oil well depth needs output frequency, and scope is reachable：5~6000Hz, i.e., can arbitrarily it be adjusted according to the length of cable；(2) it can ensure not pollute power network using front end three-phase transformer isolation pressure swing techniques, ensure that equipment safety is reliable；(3) area requirement of input voltage is relaxed, 380~460V of three-phase, greatly reduces the noise pollution of output end intermediate-frequency transformer；(4) this equipment also solves the dangerous work for manually adjusting gear according to heat penetration in the past；(5) present apparatus reduces accessory, has carried out integration reform, without winding intermediate-frequency transformer and adjustment electrodeless electric capacity resonance problems again, tedious work amount big trouble when solving conventional equipment assembling, saves cost of labor.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the present invention；
Fig. 2 is the control system hardware block diagram of the present invention；
Fig. 3 is the system principle diagram of the present invention.
In figure：1st, three-phase isolation transformer；2nd, rectification circuit；3rd, filter circuit；4th, direct current absorption resistance；5th, controlling switch；6th, inverter circuit；7th, cable is heated；8th, single chip control unit；9th, keyboard display unit；10th, protection location is detected；11st, parameter storage unit；12nd, serial communication unit；13rd, driver element；14th, power circuit；111st, single-chip computer control system；112nd, LED display module；113rd, keyboard operation module；114th, parameter preserving module；115th, voltage detection module；116th, current detection module；117th, isolation drive module；118th, temperature detecting module；119th, communication unit module.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that being used to help understand the present invention for the explanation of these embodiments, but do not form limitation of the invention.It is mutually combined in addition, as long as the technical characteristic being related in each embodiment of invention described below does not form conflict can each other.
Embodiment 1：
As shown in figure 1, a kind of intelligent heating dual frequency power supplies heater, it is made up of three-phase alternating-current supply, three-phase isolation transformer 1, rectification circuit 2, filter circuit 3, direct current absorption resistance 4, controlling switch 5, inverter circuit 6 and heating cable 7 for heating load.
Wherein：Three-phase alternating-current supply connects the first siding ring of three-phase isolation transformer 1, the output of the second siding ring of three-phase isolation transformer 1 connects the ac input end of rectification circuit 2 respectively, the DC side output of rectification circuit 2 is connected on filter circuit 3, the DC side input of another side joint inverter circuit 6 of filter circuit 3, the AC output of inverter circuit 6 connects heating cable 7, controlling switch 5 is provided between the filter circuit 3 and inverter circuit 6 and the both ends of the controlling switch 5 are parallel with direct current absorption resistance 4, and the inverter circuit 6 is controlled by control device.
Preferably, the filter circuit 3 includes the electric capacity of two series connection.
As shown in Figures 2 and 3; control device includes single chip control unit 8; single chip control unit 8 is electrically connected with keyboard display unit 9, detection protection location 10, parameter storage unit 11 and serial communication unit 12, and single chip control unit 8, detection protection location 10, keyboard display unit 9, driver element 13, parameter storage unit 11 and serial communication unit 12 are powered by power circuit 14；Single chip control unit 8 includes single-chip computer control system 111；Detection protection location 10 includes voltage detection module 115, current detection module 116, temperature detecting module 118 and isolation drive module 117, and keyboard display unit 9 includes keyboard operation module 113 and LED display module 112.
Three-phase electricity first passes through three-phase isolation transformer 1 and is become required voltage,Alternating current is changed into direct current by rectification circuit 2 again,It is filtered voltage stabilizing processing to it by filter circuit 3 again,Processing passes through voltage detection module 115 and the numerical value of the detector voltage of current detection module 116 and electric current after completing,And the numerical value is sent to single-chip computer control system 111,Single-chip computer control system 111 is processed to be sent to LED display module 112 later,And its concrete numerical value is shown,Electric current after rectifying and wave-filtering is handled through overload by PWM inversions,Raise load temperature,Its temperature is detected by temperature detecting module 118,And concrete numerical value is passed into single-chip computer control system 111,Shown again via LED display module 112,If temperature can not reach requirement,The frequency for needing to change by the input of keyboard operation module 113,Pass through the calculating of single-chip computer control system 111,And result of calculation is passed into communication unit module 119,Communication unit module 119 is electrically connected to inverter circuit 6,The conducting of the IGBT in inverter circuit 6, which can be controlled, to be disconnected,So as to reach the frequency of requirement,The change of frequency can change the induction reactance between heating cable 7 and hollow stem,Reduce perceptual heating,Increase resistive heating,It need not transfer the files and change the size of transformer output voltage and complete the transformation of heating power.
In the present embodiment, the tap of some corresponding country variant normal voltages is provided with the three-phase isolation transformer 1.
In the present embodiment, the three-phase isolation transformer 1 is delta transformer.
After actual practical application more than a year, invention achieves expected experiment effect, the stability of whole system brings up to more than 20%, fault rate reduces, the service life for heating cable extends, without electric breakdown phenomena, the pollution of noise disappears, the pollution of mains by harmonics disappears, application of the direct current transmission in heating system is embodied, has brought up to below 2500m compared to below heat penetration 1200m of the prior art, and firing rate is fast, electric energy is saved, viscous crude electrical heating market can be given to save 30% investment.
Embodiments of the present invention are explained in detail above in association with accompanying drawing, but the present invention is not limited to described embodiment.For the ordinary skill in the art, without departing from the principles and spirit of the present invention these embodiments are carried out with a variety of changes, modification, replacement and deformation to still fall within the scope of the present invention.
Claims (4)
- A kind of 1. intelligent heating dual frequency power supplies heater, it is characterised in that：Transformation is isolated by three-phase alternating-current supply, three Device, rectification circuit, filter circuit, direct current absorption resistance, controlling switch, inverter circuit and the heating for heating load Cable forms, wherein：Three-phase alternating-current supply connects the first siding ring of three-phase isolation transformer, and the two of three-phase isolation transformer The output of secondary lateral coil connects the ac input end of rectification circuit respectively, and the DC side output of rectification circuit is connected on filter circuit, The DC side input of another side joint inverter circuit of filter circuit, the AC output of inverter circuit connects heating cable, described Controlling switch is provided between filter circuit and inverter circuit and the controlling switch both ends are parallel with direct current absorption resistance, it is described Inverter circuit is controlled by control device.
- A kind of 2. intelligent heating dual frequency power supplies heater according to claim 1, it is characterised in that：The control Device includes single chip control unit, the single chip control unit be electrically connected with keyboard display unit, detection protection location, Parameter storage unit and serial communication unit, the single chip control unit, detection protection location, keyboard display unit, Driver element, parameter storage unit and serial communication unit are powered by power circuit；The single chip control unit includes single-chip computer control system；The detection protection location includes voltage detection module, current detection module, temperature detecting module and isolation drive mould Block, the voltage detection module detect the magnitude of voltage after voltage stabilizing after filtering and pass to the single-chip computer control system, The current detection module detects the current value after voltage stabilizing after filtering and passes to the single-chip computer control system, described Single-chip computer control system starts isolation drive module when detecting magnitude of voltage and current value exception, circuit is protected, institute The temperature in temperature detecting module detection load is stated, and passes to the single-chip computer control system；The keyboard display unit includes keyboard operation module and LED display module, and the keyboard operation module can be by number Value inputs to the single-chip computer control system, and the LED display module shows the voltage detection module, current detecting mould The numerical value that block and temperature detecting module detect.
- A kind of 3. intelligent heating dual frequency power supplies heater according to claim 1, it is characterised in that：The three-phase The tap of some corresponding country variant normal voltages is provided with isolating transformer.
- A kind of 4. intelligent heating dual frequency power supplies heater according to claim 1 or 3, it is characterised in that：It is described Three-phase isolation transformer is delta transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610528224.9A CN107592689A (en) | 2016-07-06 | 2016-07-06 | A kind of intelligent heating dual frequency power supplies heater |
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| CN201610528224.9A CN107592689A (en) | 2016-07-06 | 2016-07-06 | A kind of intelligent heating dual frequency power supplies heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383874A (en) * | 2018-10-29 | 2019-02-26 | 上海古鳌电子科技股份有限公司 | A kind of bundling device control circuit |
| CN109803462A (en) * | 2019-03-20 | 2019-05-24 | 苏州工业园区海沃科技有限公司 | A kind of transformer dc heating power supply |
| CN112118654A (en) * | 2019-06-19 | 2020-12-22 | 晟美光电有限公司 | Three-phase power supply driving light-emitting diode circuit device |
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| CN204772291U (en) * | 2014-05-26 | 2015-11-18 | 威海聚力微特电机有限公司 | Single -phase frequency conversion driven impacted style electric spanner |
| CN205793437U (en) * | 2016-07-06 | 2016-12-07 | 中国海洋石油总公司 | A kind of intelligent heating dual frequency power supplies heater |
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2016
- 2016-07-06 CN CN201610528224.9A patent/CN107592689A/en active Pending
Patent Citations (7)
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| US6006837A (en) * | 1997-11-17 | 1999-12-28 | Camco International Inc. | Method and apparatus for heating viscous fluids in a well |
| CN1366378A (en) * | 2001-01-15 | 2002-08-28 | 吴加林 | H-bridge triple three-phase reverse-conversion power supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383874A (en) * | 2018-10-29 | 2019-02-26 | 上海古鳌电子科技股份有限公司 | A kind of bundling device control circuit |
| CN109803462A (en) * | 2019-03-20 | 2019-05-24 | 苏州工业园区海沃科技有限公司 | A kind of transformer dc heating power supply |
| CN109803462B (en) * | 2019-03-20 | 2021-11-09 | 苏州工业园区海沃科技有限公司 | Transformer direct current heating power supply |
| CN112118654A (en) * | 2019-06-19 | 2020-12-22 | 晟美光电有限公司 | Three-phase power supply driving light-emitting diode circuit device |
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Address after: 100000 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Applicant after: TIANJIN HEZHONGDA OIL & GAS TESTING CO., LTD. Address before: 100000 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: China National Offshore Oil Corporation Applicant before: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Applicant before: TIANJIN HEZHONGDA OIL & GAS TESTING CO., LTD. |
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