CN202721613U - Heavy-oil electrothermal recovery heating power supply - Google Patents
Heavy-oil electrothermal recovery heating power supply Download PDFInfo
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- CN202721613U CN202721613U CN 201220408186 CN201220408186U CN202721613U CN 202721613 U CN202721613 U CN 202721613U CN 201220408186 CN201220408186 CN 201220408186 CN 201220408186 U CN201220408186 U CN 201220408186U CN 202721613 U CN202721613 U CN 202721613U
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Abstract
The utility model discloses a heavy-oil electrothermal recovery heating power supply which belongs to the power supply technology field. The power supply comprises a rectification module, an inversion module, a single chip microcomputer, a DSP, a driving module, an isolation transformer, a man-machine interface module and the like. A filtered direct current passes through the inversion module, then is changed into a single-phase alternating current and is output to the isolation transformer. A three-phase unbalanced power grid is not caused. A double CPU structure of the DSP and the single chip microcomputer are used so that a SPWM operation can be rapidly realized; communication can be performed on a plurality of interface units. A control circuit is further simplified and a failure rate in the heating power supply is reduced. The isolation transformer with an amorphous-alloy annular iron core is used. A medium-high frequency response characteristic is ideal and losses of the power supply itself are small.
Description
Technical field
The utility model relates to a kind of power supply, particularly relates to a kind of viscous crude electric heating and adopts heating power supply.
Background technology
Viscous crude occupies suitable ratio in China's underground petroleum storage, especially ratio is higher in the western oil field of the Liaohe Oil Field of China and in recent years exploitation, its feature is that viscosity is large, solidifying point is high, poor fluidity, is difficult under normal conditions with conventional method exploitation and collection defeated.Through for many years research, the viscous crude acquisition technique can be divided into chemical method, physical method and biological method three major types both at home and abroad.The former environmental pollution problem is difficult to solve, and the latter not yet reaches the commercial Application level, and it is thick that at present viscous crude collection mainly adopts physical method to fall, and except adding the dilution viscosity reductions such as diesel oil or kerosene, having implemented commercial Application and true fruitful physical method is thermal recovery.
It is the wherein a kind of of heavy crude heat extraction that electric heating is adopted, and the electric heating device for picking is made of four major parts usually: special-purpose heating power supply, hollow rod, hollow oil-well pump and heating cable.To utilize special-purpose heating power supply that hollow rod and oil pumper integral body are heated as a load in early days, viscous crude again condensation and problem of blocking oil pipe in taking out lifting process had so both been solved, realized again uninterrupted continuously oil recovery, this is a much progress of heavy crude heat extraction technology.
Heating power supply is the core that viscous crude electric heating is adopted technique device.At present, it is very simple and easy that a lot of electric heating are adopted the well head power supply, and single-phase isolating transformer is just directly powered in pit shaft after the middle piezoelectricity of oilfield electric net become required low tension.Obviously the output of isolating transformer is fixed, and flexibly pressure regulation more can not frequency modulation, also can't require the realization closed-loop control according to wellhead temperature.This extensive Electric heating utilization rate of electrical is lower, and power factor is low, and causes three phase network seriously uneven.
In view of this, the inventor studies this, develops specially a kind of viscous crude electric heating and adopts heating power supply, and this case produces thus.
The utility model content
But the purpose of this utility model provides a kind of flexible output voltage size and frequency, utilization rate of electrical is high and can not disturb the viscous crude electric heating of three phase network to adopt heating power supply.
To achieve these goals, solution of the present utility model is:
A kind of viscous crude electric heating is adopted heating power supply, comprises rectification module, inversion module, single-chip microcomputer, DSP, driver module, isolating transformer and human-machine interface module etc.The input of rectification module connects three-phase alternating current, and output connects the input of inversion module, and the output of inversion module connects isolating transformer; The output of driver module connects inversion module, and input connects DSP, and DSP is connected connection with single-chip microcomputer, and human-machine interface module is connected with single-chip microcomputer is two-way; Described isolating transformer adopts amorphous alloy toroidal core and high withstand voltage large electric current winding.
Also be parallel with a filter capacitor between rectification module and the inversion module, the negative pole of rectification module and filter capacitor is in series with a current-limiting resistance, is parallel with a relay in the both sides of current-limiting resistance.The effect of current-limiting resistance is to limit powered on moment to the charging current of filter capacitor, the protection rectification circuit, and after the filter capacitor charging finishes, the relay adhesive, the current-limiting resistance short circuit is no longer worked.
Described DSP selects the dsp chip of Electric Machine Control class, and the utility model is selected the ADMCF328 of ADI company.
Described inversion module adopts Using Sinusoidal Pulse Width Modulation (SPWM) technology to carry out inversion, selects the IGBT module, and four IGBT modules form a single-phase full bridge inverter circuit.
Single-chip microcomputer is used for human-machine interface module, communication and the control of various I/O interface.
Become direct current behind the three-phase alternating current process rectification module rectifying and wave-filtering, again through excessive capacity filter capacitor, the power factor of Effective Raise power supply reduces the interference to electrical network.Filtered direct current outputs to isolating transformer through becoming single-phase alternating current behind the inversion module, so just can not cause three phase network uneven, again by the no-load voltage ratio of isolating transformer, output voltage can be brought up to the upper limit that load needs.
Modulating frequency by DSP and driver module control inversion module makes the voltage and the frequency that output to isolating transformer adjustable arbitrarily, is convenient to realize optimum Match according to different well depths and load parameter; DSP utilizes the high-speed computation ability of DSP and inner special instruction and the algorithm that is used for inversion control thereof to realize high speed SPWM technology as the inversion main control chip.The two-way connection DSP of single-chip microcomputer and human-machine interface module, control man-machine interface, communication and various I/O interface, digital intelligent interface are easy to realize temperature closed loop control and network monitoring.The utility model adopts DSP and double CPU of microcomputer structure, can realize fast the SPWM computing, can carry out communication with a plurality of interface units again, and control circuit is further simplified, and reduces the failure rate of described heating power supply inside.
Adopt the isolating transformer of amorphous alloy toroidal core, the medium-high frequency response characteristic is desirable, and own loss is little, is particularly suitable for the intermediate frequency transformation, and intermediate frequency output can produce good kelvin effect at calandria, and electric conversion efficiency is higher.
Below in conjunction with drawings and the specific embodiments the utility model is done and to be described in further detail.
Description of drawings
Fig. 1 is the control principle drawing that the viscous crude electric heating of the present embodiment is adopted heating power supply.
Embodiment
A kind of viscous crude electric heating is adopted heating power supply, comprises rectification module 1, inversion module 2, isolating transformer 3, driver module 4, DSP5, single-chip microcomputer 6 and human-machine interface module 7 etc.The input of rectification module 1 connects three-phase alternating current, and output connects the input of inversion module 2, and the output of inversion module 2 connects isolating transformer; The output of driver module 4 connects inversion module 2, and input connects DSP5, and DSP5 is connected two-way connection with single-chip microcomputer, human- machine interface module 7 and 6 two-way connections of single-chip microcomputer; Described isolating transformer 3 adopts amorphous alloy toroidal core and high withstand voltage large electric current winding.
Also be parallel with a filter capacitor C between rectification module 1 and the inversion module 2, rectification module 1 is in series with a current-limiting resistance R with the negative pole of filter capacitor C, is parallel with a relay K in the both sides of current-limiting resistance R.The effect of current-limiting resistance R is to limit powered on moment to the charging current of filter capacitor C, the protection rectification circuit, and after filter capacitor C charging finishes, the relay K adhesive, current-limiting resistance R short circuit is no longer worked.
Described DSP5 selects the dsp chip of Electric Machine Control class, and the utility model is selected the ADMCF328 of ADI company.
Described inversion module 2 adopts Using Sinusoidal Pulse Width Modulation (SPWM) technology to carry out inversion, selects the IGBT module, and four IGBT modules form a single-phase full bridge inverter circuit.
Single-chip microcomputer 6 is used for human-machine interface module 7, communication and the control of various I/O interface.
Become direct current behind three-phase alternating current process rectification module 1 rectifying and wave-filtering, again through excessive capacity filter capacitor C, the power factor of Effective Raise power supply reduces the interference to electrical network.Filtered direct current outputs to isolating transformer 3 through becoming single-phase alternating current behind the inversion module 2, so just can not cause three phase network uneven, again by the no-load voltage ratio of isolating transformer 3, output voltage can be brought up to the upper limit that load needs.
Modulating frequency by DSP5 and driver module 4 control inversion modules 2 makes the voltage and the frequency that output to isolating transformer 3 adjustable arbitrarily, is convenient to realize optimum Match according to different well depths and load parameter; DSP5 utilizes the high-speed computation ability of DSP5 and inner special instruction and the algorithm that is used for inversion control thereof to realize high speed SPWM technology as the inversion main control chip.Single-chip microcomputer 6 two-way connection DSP5 and human-machine interface modules 7, control man-machine interface, communication and various I/O interface, digital intelligent interface are easy to realize temperature closed loop control and network monitoring.The present embodiment adopts DSP5 and single-chip microcomputer 6 dual-cpu structures, can realize fast the SPWM computing, can carry out communication with a plurality of interface units again, and control circuit is further simplified, and reduces the failure rate of described heating power supply inside.
Adopt the isolating transformer 7 of amorphous alloy toroidal core, the medium-high frequency response characteristic is desirable, and own loss is little, is particularly suitable for the intermediate frequency transformation, and intermediate frequency output can produce good kelvin effect at calandria, and electric conversion efficiency is higher.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (6)
1. a viscous crude electric heating is adopted heating power supply, it is characterized in that: comprise rectification module, inversion module, single-chip microcomputer, DSP, driver module, isolating transformer and human-machine interface module; The input of rectification module connects three-phase alternating current, and output connects the input of inversion module, and the output of inversion module connects isolating transformer; The output of driver module connects inversion module, and input connects DSP, and DSP is connected connection with single-chip microcomputer, and human-machine interface module is connected with single-chip microcomputer is two-way; Described isolating transformer adopts amorphous alloy toroidal core and high withstand voltage large electric current winding.
2. a kind of viscous crude electric heating as claimed in claim 1 is adopted heating power supply, it is characterized in that: also be parallel with a filter capacitor between described rectification module and the inversion module, the negative pole of rectification module and filter capacitor is in series with a current-limiting resistance, is parallel with a relay in the both sides of current-limiting resistance.
3. a kind of viscous crude electric heating as claimed in claim 1 is adopted heating power supply, and it is characterized in that: described DSP selects the dsp chip of Electric Machine Control class.
4. a kind of viscous crude electric heating as claimed in claim 3 is adopted heating power supply, and it is characterized in that: described DSP selects the ADMCF328 of ADI company.
5. a kind of viscous crude electric heating as claimed in claim 1 is adopted heating power supply, it is characterized in that: described inversion module adopts sine pulse midth modification to carry out inversion.
6. a kind of viscous crude electric heating as claimed in claim 5 is adopted heating power supply, and it is characterized in that: described inversion module is selected the IGBT module, and four IGBT modules form a single-phase full bridge inverter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220408186 CN202721613U (en) | 2012-08-17 | 2012-08-17 | Heavy-oil electrothermal recovery heating power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220408186 CN202721613U (en) | 2012-08-17 | 2012-08-17 | Heavy-oil electrothermal recovery heating power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202721613U true CN202721613U (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220408186 Expired - Fee Related CN202721613U (en) | 2012-08-17 | 2012-08-17 | Heavy-oil electrothermal recovery heating power supply |
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| Country | Link |
|---|---|
| CN (1) | CN202721613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801335A (en) * | 2012-08-17 | 2012-11-28 | 绍兴文理学院 | Thickened oil electric thermal recovery heating power supply |
-
2012
- 2012-08-17 CN CN 201220408186 patent/CN202721613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801335A (en) * | 2012-08-17 | 2012-11-28 | 绍兴文理学院 | Thickened oil electric thermal recovery heating power supply |
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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 |
Granted publication date: 20130206 Termination date: 20150817 |
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| EXPY | Termination of patent right or utility model |