CN103023367A - Crude oil electric dehydration high voltage power supply device - Google Patents
Crude oil electric dehydration high voltage power supply device Download PDFInfo
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- CN103023367A CN103023367A CN2012105437025A CN201210543702A CN103023367A CN 103023367 A CN103023367 A CN 103023367A CN 2012105437025 A CN2012105437025 A CN 2012105437025A CN 201210543702 A CN201210543702 A CN 201210543702A CN 103023367 A CN103023367 A CN 103023367A
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Abstract
The invention provides a crude oil electric dehydration high voltage power supply device, relates to crude oil electric dehydration high voltage power supply devices, and aims at solving the problems of continuous discharge of high voltage dehydration electrodes, collapse of high voltage dehydration electric fields and increasing of capacity requirement of the high voltage power supply devices during crude oil electric dehydration process. The crude oil electric dehydration high voltage power supply device performs pressure regulating and current-limiting on low voltage alternating current and then performs boosting through a high voltage transformer, two paths of high voltage outputs of the high voltage transformer are rectified by a first high voltage silicon stack and a second high voltage silicon stack, formed into high voltage direct current with positive polarity and negative polarity, and output to a high voltage fast pulse unit. A microprocessor control unit judges whether dehydration electrodes form ripples according to voltage and current monitoring values and controls switching of the high voltage fast pulse unit. Under a normal dehydration condition, the high voltage fast pulse unit outputs direct current with positive and negative polarity, and when short circuits are caused by existence of ripples, the high voltage fast pulse unit exerts batch-type high voltage large current pulse to load till the ripples are opened, and accordingly electric fields in a dehydration container are recovered. The crude oil electric dehydration high voltage power supply device is applied to the crude oil processing process.
Description
Technical field
The present invention relates to a kind of electric supply installation, be specifically related to the crude oil electric dewatering high voltage power supply device.
Background technology
The dehydration of crude oil is an important step in the Crude Oil Processing, and electricity, chemical dehydration method are adopted in each oil field more at present, and institute's making alive is industrial frequency AC or high direct voltage, and supply power mode generally has the dehydration of interchange, direct current dehydration and alternating current-direct current dehydration.Along with the oil field enters the high water-cut stage mining phase, each oil recovery factory generally uses tertiary oil recovery technology.In the electric dehydration process of ternary composite oil-displacing, owing to added alkali/Surfactant/Polymer ternary combination, the increase of crude oil conductivity, viscosity are strengthened, thereby the difficulty of the dehydration of crude oil is increased.These materials easily adhere on the insulated tension pole of dewatering container, thereby cause on the insulating device surface long-term stable creeping discharge occuring easily.Simultaneously, water droplet in the crude oil is easy to form stable water ripples under electric field action, to cause continuous discharge when the water ripples develops into when running through two electrodes, the existence of this discharge has destroyed the foundation of dewatering container inner high voltage electric field, has also increased the problems such as capacity of dehydration power supply simultaneously.
Summary of the invention
The formation owing to the water ripples causes the interelectrode continuous discharge of high press-dehydrating in the existing crude oil electric dewatering process in order to solve in the present invention, and cause thus collapsing and problem that the high voltage power supply device capacity requirement increases of high pressure dewatering electric field, thereby the crude oil electric dewatering high voltage power supply device has been proposed.
The crude oil electric dewatering high voltage power supply device, it comprises switching pressure regulation performance element, voltage sensor, current limiting reactor, high-tension transformer, the first high voltage silicon stack, the first current-limiting resistance, the first high-voltage capacitor, high pressure fast pulse unit, the second high voltage silicon stack, the second current-limiting resistance, the second high-voltage capacitor, current sensor and microcomputer control unit
A voltage output end of described switching pressure regulation performance element is connected with an end of current limiting reactor, the other end of this current limiting reactor is connected with an end of the primary coil of high-tension transformer, and the other end of the primary coil of this high-tension transformer is connected with another voltage output end of switching pressure regulation performance element; Voltage sensor is for detection of the voltage signal between two voltage output ends of switching pressure regulation performance element, and this voltage signal is exported to the voltage signal input of microcomputer control unit; Current sensor is for detection of the current signal of switching pressure regulation performance element output, and this current signal exports to the current signal input of microcomputer control unit,
One end of the secondary coil of high-tension transformer is connected with the positive pole of the first high voltage silicon stack, the negative pole of this first high voltage silicon stack is connected with an end of the first current-limiting resistance, and the other end of this first current-limiting resistance is connected in node a1 with an end of the first high-voltage capacitor and the positive polarity dc voltage input end of high pressure fast pulse unit simultaneously;
The other end of the secondary coil of high-tension transformer is connected with the negative pole of the second high voltage silicon stack, the positive pole of this second high voltage silicon stack is connected with an end of the second current-limiting resistance, the other end of this second current-limiting resistance is connected in node a2 with an end of the second high-voltage capacitor and the negative polarity dc voltage input end of high pressure fast pulse unit simultaneously, and the anodal dc voltage output end HV+ in high pressure fast pulse unit, negative pole dc voltage output end HV-and direct voltage ground GND output are the load link;
The centre tap of the secondary coil of high-tension transformer is connected the power supply ground of input direct voltage with the other end of the other end of the first high-voltage capacitor, the second high-voltage capacitor simultaneously and is connected with high pressure fast pulse unit;
The a pair of both positive and negative polarity high pressure break-make control signal output of microcomputer control unit is connected with a pair of both positive and negative polarity high pressure break-make control signal input of high pressure fast pulse unit,
The a pair of both positive and negative polarity Regulation Control signal output part of microcomputer control unit is connected with a pair of both positive and negative polarity Regulation Control signal input part of switching pressure regulation performance element,
The a pair of both positive and negative polarity overcurrent protection signal output part of microcomputer control unit is connected with a pair of both positive and negative polarity overcurrent protection control signal input of switching pressure regulation performance element.
Crude oil electric dewatering high voltage power supply device of the present invention is used for high voltage direct current that crude oil electric dewatering uses and the high voltage power supply device of high pressure fast pulse timesharing alternation, with the formation of stablizing the conductivity water ripples in effective elimination crude oil electric dewatering process, prevent continuous discharge, avoided having reached the purpose that guarantees the Establishment of Stable of high pressure dewatering electric field because of the collapsing and phenomenon that the high voltage power supply device capacity requirement increases of high pressure dewatering electric field.
Description of drawings
Fig. 1 is the electrical principle schematic diagram of crude oil electric dewatering high voltage power supply device;
Fig. 2 is the electrical schematic diagram of high pressure fast pulse unit;
Fig. 3 is the internal structure schematic diagram of high pressure fast pulse unit.
Embodiment
Embodiment one, specify present embodiment in conjunction with Fig. 1, the described crude oil electric dewatering high voltage power supply device of present embodiment, it comprises switching pressure regulation performance element 1, voltage sensor 2, current limiting reactor 3, high-tension transformer 4, the first high voltage silicon stack 5, the first current-limiting resistance 6, the first high-voltage capacitor 7, high pressure fast pulse unit 8, the second high voltage silicon stack 9, the second current-limiting resistance 10, the second high-voltage capacitor 11, current sensor 12 and microcomputer control unit 13
A voltage output end of described switching pressure regulation performance element 1 is connected with an end of current limiting reactor 3, the other end of this current limiting reactor 3 is connected with an end of the primary coil of high-tension transformer 4, and the other end of the primary coil of this high-tension transformer 4 is connected with switching pressure regulation performance element 1 another voltage output end; Voltage sensor 2 is for detection of the voltage signal between two voltage output ends of switching pressure regulation performance element 1, and this voltage signal is exported to the voltage signal input of microcomputer control unit 13; Current sensor 12 is for detection of the current signal of switching pressure regulation performance element 1 output, and this current signal exports to the current signal input of microcomputer control unit 13,
One end of the secondary coil of high-tension transformer 4 is connected with the positive pole of the first high voltage silicon stack 5, the negative pole of this first high voltage silicon stack 5 is connected with an end of the first current-limiting resistance 6, and the other end of this first current-limiting resistance 6 is connected in node a1 with an end of the first high-voltage capacitor 7 and the positive polarity dc voltage input end of high pressure fast pulse unit 8 simultaneously;
The other end of the secondary coil of high-tension transformer 4 is connected with the negative pole of the second high voltage silicon stack 9, the positive pole of this second high voltage silicon stack 9 is connected with an end of the second current-limiting resistance 10, the other end of this second current-limiting resistance 10 is connected in node a2 with an end of the second high-voltage capacitor 11 and the negative polarity dc voltage input end of high pressure fast pulse unit 8 simultaneously, and high pressure fast pulse unit 8 anodal dc voltage output end HV+, negative pole dc voltage output end HV-and direct voltage ground GND output are the load link;
The power supply ground of the centre tap while of the secondary coil of high-tension transformer 4 with the input direct voltage that the other end of the other end of the first high-voltage capacitor 7, the second high-voltage capacitor 11 is connected with high pressure fast pulse unit is connected;
The a pair of both positive and negative polarity high pressure break-make control signal output of microcomputer control unit 13 is connected with a pair of both positive and negative polarity high pressure break-make control signal input of high pressure fast pulse unit 8,
The a pair of both positive and negative polarity Regulation Control signal output part of microcomputer control unit 13 is connected with a pair of both positive and negative polarity Regulation Control signal input part of switching pressure regulation performance element 1,
The a pair of both positive and negative polarity overcurrent protection signal output part of microcomputer control unit 13 is connected with a pair of both positive and negative polarity overcurrent protection control signal input of switching pressure regulation performance element 1.
The beneficial effect of present embodiment is: eliminate the formation of stablizing the conductivity water ripples in the dehydrator by the intermittent high-pressure Fast pulsed discharge, guarantee the Establishment of Stable of dewatering electric field, improve electrical oil dewatering water quality and efficient, and reduce the capacity of dehydration electric supply installation.
Embodiment two, specify present embodiment in conjunction with Fig. 2, the difference of present embodiment and embodiment one described crude oil electric dewatering high voltage power supply device is, high pressure fast pulse unit 8 comprises third high piezoelectricity container 8-10, the first electromagnetic relay, the 4th high-voltage capacitor 8-11 and the second electromagnetic relay, and described the first electromagnetic relay comprises the normal open switch 8-4 of the first electromagnetic relay and the coil 8-12 of the first electromagnetic relay; The second electromagnetic relay comprises the normal open switch 8-5 of the second electromagnetic relay and the coil 8-13 of the second electromagnetic relay,
The end of the end of described third high piezoelectricity container 8-10 and the normal open switch 8-4 of the first electromagnetic relay is connected in node a1, the other end of the normal open switch 8-4 of this first electromagnetic relay is connected with anodal dc voltage output end HV+, and the two ends after the coil 8-13 parallel connection of the coil 8-12 of the first electromagnetic relay and the second electromagnetic relay are connected with a pair of both positive and negative polarity high pressure break-make output of microcomputer control unit 13 as a pair of both positive and negative polarity high pressure break-make input of high pressure fast pulse unit 8;
The end of the end of the 4th high-voltage capacitor 8-11 and the normal open switch 8-5 of the second electromagnetic relay is connected in node a2, and the other end of the normal open switch 8-5 of this second electromagnetic relay is connected with negative pole dc voltage output end HV-;
The other end of third high piezoelectricity container 8-10 is connected with direct voltage ground GND output with the other end of the 4th high-voltage capacitor 8-11 simultaneously.
Operation principle of the present invention is:
Single phase alternating current (A.C.) voltage AC220 carries out delivering to current limiting reactor 3 after pressure regulation and the switching control through switching pressure regulation performance element 1, then export high-tension transformer 4 to low pressure is boosted to the required ac high-voltage of dehydration, high-tension transformer 4 secondary coils adopt the double winding centre tap ground connection mode of connection, its two-way High voltage output is received respectively the first high voltage silicon stack 5 and the second high voltage silicon stack 9, the first high voltage silicon stack 5 becomes the positive polarity direct current with AC rectification and charges through 6 pairs of the first high-voltage capacitors 7 of the first current-limiting resistance, the second high voltage silicon stack 9 becomes the negative polarity direct current with AC rectification and charges through 10 pairs of the second high-voltage capacitors 11 of the second current-limiting resistance, and this just, the negative polarity high direct voltage inputs to high pressure fast pulse unit 8.The output of microcomputer control unit 13 is controlled switching high pressure performance element 1 and high pressure fast pulse unit 8 respectively, and by voltage sensor 2(VT) and current sensor 12(CT) respectively the voltage and current in main supply electricity loop carried out Real-Time Monitoring, judge according to the voltage and current monitor value whether high press-dehydrating electrode has because the short circuit that the water ripples forms between high-field electrode exists.When existing without short circuit, utilize the normal open switch of two electromagnetic relays of microcomputer control unit 13 control 8 inside, high pressure fast pulse unit, make high pressure fast pulse unit 8 output high-voltage dc voltages; When having short circuit, microcomputer control unit 13 sends instruction, disconnection is to the high voltage direct current power supply of dehydration of crude oil container, and the high-voltage capacitor (8-10 and 8-11 among Fig. 3) of 8 inside, high pressure fast pulse unit charged, control switching pressure regulation performance element 1 cuts off the control electricity of major loop after high-voltage capacitor (8-10 and 8-11 among Fig. 3) is full of voltage, and normal open switch (8-4 and 8-5 among Fig. 3) closure of control 8 inside, high pressure fast pulse unit, the energy that high-voltage capacitor this moment (8-10 and 8-11 among Fig. 3) stores by high-voltage switch gear to load discharge, utilize the large electric current of high-energy-density of discharge generation, short circuit water ripples in the dehydration electrode is washed open, and the electric field in the dewatering container is recovered and foundation again, to guarantee that high voltage power supply device is to stable power-supplying and the dehydration of dehydration capacity.
As shown in Figure 3, the internal structure of high pressure fast pulse unit is switch installation board 8-1, anodal high-voltage terminal end 8-2, negative pole high-voltage terminal end 8-3, the first electromagnetic relay, the second electromagnetic relay, positive extra-high voltage end of incoming cables 8-6, negative pole high pressure end of incoming cables 8-7, the first high pressure pull bar 8-8, the second high pressure pull bar 8-9, third high piezoelectricity container 8-10, the 4th high-voltage capacitor 8-11 and mounting base 8-14
The lower surface of switch installation board 8-1 is fixed in the upper end of the upper end of the normal open switch 8-4 of the first electromagnetic relay and the normal open switch 8-5 of the second electromagnetic relay, and anodal high-voltage terminal end 8-2 and negative pole high-voltage terminal end 8-3 are positioned at the upper surface of switch installation board 8-1,
The normal open switch 8-5 high-voltage contact of the normal open switch 8-4 of the first electromagnetic relay and the second electromagnetic relay is closed under normal circumstances, positive and negative polarity high pressure is introduced by positive extra-high voltage end of incoming cables 8-6 and negative pole high pressure end of incoming cables 8-7, and is connected to load by anodal high-voltage terminal end 8-2 and negative pole high-voltage terminal end 8-3 output; When there is the water ripples in the dehydration electrode, the coil 8-12 of the first electromagnetic relay and the coil 8-13 of the second electromagnetic relay action, the normal open switch 8-4 of the first electromagnetic relay and the normal open switch 8-5 high-voltage contact of the second electromagnetic relay are disconnected, this moment, High voltage output was cut off, the positive-negative polarity high pressure of input charges to third high piezoelectricity container 8-10 and the 4th high-voltage capacitor 8-11 respectively, pulse capacitor is full of the coil 8-12 of rear the first electromagnetic relay of electricity and the coil 8-13 of the second electromagnetic relay is flicked by control, drive the normal open switch 8-5 closure of normal open switch 8-4 and second electromagnetic relay of the first electromagnetic relay, pulse capacitor forms positive-negative polarity high pressure fast pulse by high-voltage switch gear to load discharge.
Claims (2)
1. crude oil electric dewatering high voltage power supply device, it is characterized in that, it comprises switching pressure regulation performance element (1), voltage sensor (2), current limiting reactor (3), high-tension transformer (4), the first high voltage silicon stack (5), the first current-limiting resistance (6), the first high-voltage capacitor (7), high pressure fast pulse unit (8), the second high voltage silicon stack (9), the second current-limiting resistance (10), the second high-voltage capacitor (11), current sensor (12) and microcomputer control unit (13)
A voltage output end of described switching pressure regulation performance element (1) is connected with an end of current limiting reactor (3), the other end of this current limiting reactor (3) is connected with an end of the primary coil of high-tension transformer (4), and the other end of the primary coil of this high-tension transformer (4) is connected with another voltage output end of switching pressure regulation performance element (1); Voltage sensor (2) is for detection of the voltage signal between two voltage output ends of switching pressure regulation performance element (1), and this voltage signal is exported to the voltage signal input of microcomputer control unit (13); Current sensor (12) is for detection of the current signal of switching pressure regulation performance element (1) output, and this current signal exports to the current signal input of microcomputer control unit (13),
One end of the secondary coil of high-tension transformer (4) is connected with the positive pole of the first high voltage silicon stack (5), the negative pole of this first high voltage silicon stack (5) is connected with an end of the first current-limiting resistance (6), and the other end of this first current-limiting resistance (6) is connected in node a1 with an end of the first high-voltage capacitor (7) and the positive polarity dc voltage input end of high pressure fast pulse unit (8) simultaneously;
The other end of the secondary coil of high-tension transformer (4) is connected with the negative pole of the second high voltage silicon stack (9), the positive pole of this second high voltage silicon stack (9) is connected with an end of the second current-limiting resistance (10), the other end of this second current-limiting resistance (10) is connected in node a2 with an end of the second high-voltage capacitor (11) and the negative polarity dc voltage input end of high pressure fast pulse unit (8) simultaneously, and the anodal dc voltage output end HV+ in high pressure fast pulse unit (8), negative pole dc voltage output end HV-and direct voltage ground GND output are the load link;
The centre tap of the secondary coil of high-tension transformer (4) is connected 8 with the other end of the first high-voltage capacitor (7), the other end of the second high-voltage capacitor (11) with high pressure fast pulse unit simultaneously) the power supply ground of input direct voltage be connected;
The a pair of both positive and negative polarity high pressure break-make control signal output of microcomputer control unit (13) is connected with a pair of both positive and negative polarity high pressure break-make control signal input of high pressure fast pulse unit (8),
The a pair of both positive and negative polarity Regulation Control signal output part of microcomputer control unit (13) is connected with a pair of both positive and negative polarity Regulation Control signal input part of switching pressure regulation performance element (1),
The a pair of both positive and negative polarity overcurrent protection signal output part of microcomputer control unit (13) is connected with a pair of both positive and negative polarity overcurrent protection control signal input of switching pressure regulation performance element (1).
2. crude oil electric dewatering high voltage power supply device according to claim 1, it is characterized in that: high pressure fast pulse unit (8) comprises third high piezoelectricity container (8-10), the first electromagnetic relay, the 4th high-voltage capacitor (8-11) and the second electromagnetic relay, and described the first electromagnetic relay comprises the normal open switch (8-4) of the first electromagnetic relay and the coil (8-12) of the first electromagnetic relay; The second electromagnetic relay comprises the normal open switch (8-5) of the second electromagnetic relay and the coil (8-13) of the second electromagnetic relay,
One end of the normal open switch (8-4) of one end of described third high piezoelectricity container (8-10) and the first electromagnetic relay is connected in node a1, the other end of the normal open switch of this first electromagnetic relay (8-4) is connected with anodal dc voltage output end HV+, and the two ends after coil (8-13) parallel connection of the coil of the first electromagnetic relay (8-12) and the second electromagnetic relay are connected with a pair of both positive and negative polarity high pressure break-make output of microcomputer control unit (13) as a pair of both positive and negative polarity high pressure break-make input of high pressure fast pulse unit (8);
One end of the normal open switch (8-5) of one end of the 4th high-voltage capacitor (8-11) and the second electromagnetic relay is connected in node a2, and the other end of the normal open switch of this second electromagnetic relay (8-5) is connected with negative pole dc voltage output end HV-;
The other end of third high piezoelectricity container (8-10) is connected with direct voltage ground GND output with the other end of the 4th high-voltage capacitor (8-11) simultaneously.
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| CN201210543702.5A CN103023367B (en) | 2012-12-14 | 2012-12-14 | Crude oil electric dehydration |
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| CN201210543702.5A CN103023367B (en) | 2012-12-14 | 2012-12-14 | Crude oil electric dehydration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103614158A (en) * | 2013-11-26 | 2014-03-05 | 中国石油天然气股份有限公司 | High-frequency impulse dehydrating and power supplying combination device with anti-short circuit impact self-recovering mode |
| CN105978393A (en) * | 2015-11-26 | 2016-09-28 | 中国石油天然气股份有限公司 | High-impedance alternating current and direct current superposition high-voltage power supply device for crude oil electric dehydration |
| CN108418306A (en) * | 2018-03-28 | 2018-08-17 | 哈尔滨理工大学 | A kind of high-voltage switch gear control system of quick response |
| CN114797182A (en) * | 2022-04-07 | 2022-07-29 | 北京纳米能源与系统研究所 | Electric dehydration device based on friction nano generator |
| US11857895B2 (en) | 2021-11-03 | 2024-01-02 | Saudi Arabian Oil Company | Bi-phase (Scott-T) transformer double volted AC electrostatic coalescer |
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| JP2006007236A (en) * | 2004-06-23 | 2006-01-12 | Origin Electric Co Ltd | Parallel seam joining apparatus |
| CN102005936A (en) * | 2009-09-01 | 2011-04-06 | 北京石油化工学院 | Control parameter optimization control system and method of crude oil dehydration power supply |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614158A (en) * | 2013-11-26 | 2014-03-05 | 中国石油天然气股份有限公司 | High-frequency impulse dehydrating and power supplying combination device with anti-short circuit impact self-recovering mode |
| CN103614158B (en) * | 2013-11-26 | 2016-01-20 | 中国石油天然气股份有限公司 | Short Circuit withstand impacts self-recovering type high-frequency impulse dehydration power supply combination device |
| CN105978393A (en) * | 2015-11-26 | 2016-09-28 | 中国石油天然气股份有限公司 | High-impedance alternating current and direct current superposition high-voltage power supply device for crude oil electric dehydration |
| CN105978393B (en) * | 2015-11-26 | 2019-05-21 | 中国石油天然气股份有限公司 | A kind of crude oil electric dewatering high impedance alternating current-direct current superposition high voltage power supply device |
| CN108418306A (en) * | 2018-03-28 | 2018-08-17 | 哈尔滨理工大学 | A kind of high-voltage switch gear control system of quick response |
| US11857895B2 (en) | 2021-11-03 | 2024-01-02 | Saudi Arabian Oil Company | Bi-phase (Scott-T) transformer double volted AC electrostatic coalescer |
| CN114797182A (en) * | 2022-04-07 | 2022-07-29 | 北京纳米能源与系统研究所 | Electric dehydration device based on friction nano generator |
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