CN201717803U - Electric-controlled frequency-converting and voltage-regulating pulse desalting/dehydrating device - Google Patents
Electric-controlled frequency-converting and voltage-regulating pulse desalting/dehydrating device Download PDFInfo
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- CN201717803U CN201717803U CN2009202981016U CN200920298101U CN201717803U CN 201717803 U CN201717803 U CN 201717803U CN 2009202981016 U CN2009202981016 U CN 2009202981016U CN 200920298101 U CN200920298101 U CN 200920298101U CN 201717803 U CN201717803 U CN 201717803U
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Abstract
The utility model discloses an electric-controlled frequency-converting and pressure-regulating pulse desalting/dehydrating device for crude oil, which comprises a transformer T, a microcomputer N, a controller KZG, a voltage regulating module TY, a filter LA and the like, wherein alternating current of 380 volts is regulated into a pulse circuit by the filter LA, the pulse circuit is connected with the transformer T after voltage regulation by the voltage regulating module TY, the microcomputer N is connected with the transformer T, the controller KZG, the voltage regulating module TY and the filter LA respectively, the width of pulse sent by a pulse generator is 30 to 10000 Mus, the pulse interval thereof is 30 to 10000 Mus, the pulse frequency thereof is continuously adjustable within the range from 50 to 2000 Hz, and the field voltage waves are square unidirectional pulse waves. The electric-controlled frequency-converting and pressure-regulating pulse desalting/dehydrating device adopts square-pulse-wave voltage, forms a high-voltage/pulse field, has the characteristics of improving the dehydration efficiency and reducing the electric consumption in running, solves the problem of heavy current when in dehydration, improves the coalescence force among water drops, has the functions of oscillating demulsification and electrophoresis demulsification, has obvious power saving effect, and improves the running stability of equipments.
Description
Technical field
The utility model belongs to crude oil desalting/dehydration frequency conversion voltage adjusting Pulse Electric control techniques field, and what relate generally to is a kind of crude oil desalting/dehydration frequency conversion voltage adjusting pulse electric control gear.
Background technology
Salt content in crud oil and water are normal condition and the universal phenomena in the oil extraction process, behind the crude oil water containing, great changes will take place for physical propertys such as its specific heat, viscosity, not only produce and bring a series of difficulties to the oil field, also can give the storage in the oil depot, the conveying of railway, highway, shipping, long distance pipeline, and the processing refining of oil plant causes adverse effect.The purpose of dehydration of crude oil work is exactly will manage the water in the crude oil is removed, and eliminates the harm of water.The dehydration of crude oil just becomes obligato link in the crude oil production process.
Because it is numerous to influence the factor of electric dehydration effect, present diversification at electric dehydration Study on Technology direction at present, mainly concentrate on three big aspects: the one, the electric dehydration electrode plate structure of development of new is as two-layer pole plate, three layers of pole plate, mouse cage pole plate, hang pole plate etc.; The 2nd, develop different supply power modes or breakdown of emulsion mode, as AC field, DC electric field, alternating current-direct current electric field, ripple breakdown of emulsion, microwave demulsifying etc.; The 3rd, the demulsifier of exploitation high-efficiency broad spectrum is as the synthetic demulsifier of different process, oil-soluble demulsifier, desalination auxiliary agent etc.The exploitation of these technology and applying to improving the development of electric dehydration technology, solve the problem that exists in producing, has been played crucial effect.
Prolongation along with oil property poor qualityization and production cycle, the stable operation and the dewatering efficiency of electric dehydration equipment have been subjected to serious impact, it is obvious day by day that existing dehydration technique is difficult to satisfy the trend of producing needs, and mainly show as: (1) crude oil deep dehydration compliance rate is lower, the dehydration difficulty; (2) the draining oil-containing that takes off of electricity raises, and not only causes certain wasting of resources, and causes sewage disposal difficulty and disposal cost to increase.Simultaneously, the sump oil of recovery also becomes a difficult problem of producing the oil plant processing; (3) because oil density is big, water content is high, emulsification is serious, make the electric dehydration electric current increase, even cause transformer tripping operation, scaling loss, cause energy consumption to raise significantly;
(4) crude oil takes off the moisture increase in back, causes the corrosion of carriage load increase and transporting equipment.These factors have brought very big difficulty for the oil field dehydration of crude oil, have had influence on ordinary production, the sale in oil field.Based on above-mentioned factor, the oil field is thirsted for the breakthrough of crude oil electric dewatering technology very much, and is also very urgent to new electric dehydration technology requirement.
Summary of the invention
The purpose of this utility model promptly produces thus, proposes a kind of crude oil desalting/dehydration frequency conversion voltage adjusting pulse electric control gear.Solve the problem that dehydration of crude oil rate is low, the draining oil-containing is many, energy consumption is big, electric field space is expanded, prolonged crude oil dewatering time in electric field, effectively improve dewatering efficiency, save the operation power consumption, reduce production costs.
The utility model realizes that the technical scheme that above-mentioned purpose is taked is: it is by transformer T, microcomputer N, controller KZG, voltage regulating module TY, compositions such as filter LA, the alternating current of 380V is organized into impulse circuit by filter LA with alternating current, the size back of being adjusted voltage by voltage regulating module TY joins with transformer T, microcomputer N respectively with transformer T, controller KZG, voltage regulating module TY, filter LA connects, the pulse duration that described frequency conversion voltage adjusting pulse electric control gear sends is 30～10000 μ s, inter-train pause 30～10000 μ s, pulse frequency 50～2000Hz is adjustable continuously, and the field voltage waveform is the unidirectional pulse square wave.
The utility model adopts pulse square wave voltage, form high pressure, impulse electric field, complete alternating current and direct current electric field different from the past, the oil-water emulsion particle polarizes under instantaneous pressure, coalescent, avoid having the advantages that to improve dewatering efficiency, save the operation power consumption because of short circuit or electric current increase the reduction that causes voltage of electric field.Compare with existing electric dehydration technology, maximum difference just is the waveform difference of voltage of electric field.Alternating current desalting technology the earliest is that power frequency 50Hz alternating current is imported after transformer boosts on the electric dehydration jar pole plate, constitutes alternating electric field, and it is coalescent that the formation vibration is moved in the vibration that utilizes alternating electric field that water droplet is produced.Fa Zhan alterating and direct current dehydration technique afterwards, be not that the AC and DC electricity mixes utilization, but control by rectification circuit, between the vertical electrode plate, form the direct current highfield, utilize the DC electric field dipolar forces that polarization is produced to water droplet coalescent, form between battery lead plate end and oil-water interfaces and exchange weak electric field, waveform is a half-sinusoid.The utility model adopts frequency conversion voltage adjusting pulse power supply mode, when on electrode, applying unidirectional pulse voltage, can be decomposed into the stack of direct voltage and alternating voltage because of unidirectional pulse voltage, it is the dipolar forces coalescence effect that water droplet in the crude oil both had been subjected to DC electric field, be subjected to the vibration coalescence effect of AC field again, simultaneously electric pulse can make that peak electric field improves a lot in the crude oil.Thereby high electric field pulse is more effective than alternating current, direct current breakdown of emulsion.Have following characteristics:
(1) solved the big problem of dehydration current.Emulsion is under the impulse electric field effect, and water droplet polarizes, is out of shape, assembles, and forms the water chain, and the oversize meeting of water chain length causes short circuit, before the water chain causes short circuit, and stopping pulse, the water chain is damaged, and short circuit promptly disappears.The formation of long water chain needs the regular hour, and short circuit is in case formation will cause the leakage of electric energy, and then energy consumption is big if continue to switch on, and breakdown of emulsion efficient is low.The so suitable width of strobe pulse is damaged at water, after short circuit disappears, adds next pulse again, just can avoid the leakage of electric energy.When too high or emulsification is serious at water content in crude oil, emulsion enters conventional electric desalting equipment and is short-circuited easily, causes power consumption excessive, even can't send, use frequency conversion voltage adjusting Pulse Electric dehydration technique can avoid occurring these situations, guarantee good dehydrating effect.
(2) improve coalescence force between water droplet.Because the intermittent power supply technical characterstic of impulse electric field, under the same conditions, impulse electric field strength exchanges, the alterating and direct current field intensity is high 3～5 times, square being directly proportional of coalescence force in the crude oil emulsion between the water droplet and electric field strength, thereby more traditional interchange, the alternating current-direct current of coalescence force improves 9～25 times in the impulse electric field, helps breakdown of emulsion more.
(3) have the vibration breakdown of emulsion effect.The instantaneous pressure impulse electric field can produce bigger vibration to the water droplet in the emulsion, makes that emulsion interfaces tension force is damaged around the water droplet, has accelerated collision and coalescent between the water droplet, thereby has further improved the ability of breakdown of emulsion.
(4) has the effect of electrophoresis breakdown of emulsion.One-way high-pressure Pulse Electric field energy makes fine liquid particles move about to the pole plate of the band charges of different polarity, and water droplet is agglomerated into big water droplet on pole plate, and like this, these tiny water droplets have just been sloughed, and have further improved the efficient of dehydration.
(5) power savings is obvious.The pulse power is an intermission power supply method, has shortened conduction time, reduces running current, has tangible power savings; Adopt microcomputerized control, realize voltage compensating function, reduced whole impedance and brought loss.
(6) intensifier operation stability.Can effectively avoid reducing or short circuit by the impulse electric field of SCR control output, greatly improve the stability of electric desalting apparatus power supply, guarantee the stable operation of electric dehydration equipment because of electric current increases the voltage that produces.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model frequency conversion voltage adjusting pulse electric control gear.
Fig. 2 is the schematic diagram of the utility model frequency conversion voltage adjusting pulse generating circuit.
Embodiment
In conjunction with the accompanying drawings, it is as follows to provide execution mode of the present utility model:
Shown in Fig. 1-2, the described crude oil desalting of this example example/dehydration frequency conversion voltage adjusting pulse electric control gear is made up of transformer T, microcomputer N, controller KZG, voltage regulating module TY, filter LA etc., the alternating current of 380V joins by filter LA, voltage regulating module TY and transformer T, what filter LA adopted is conventional filter circuit, and its effect is that alternating current is organized into impulse circuit.What voltage regulating module TY adopted also is conventional regulating circuit, and its effect is a size of adjusting voltage.What microcomputer N adopted is homemade EM1 control module; be connected with transformer T, controller KZG, voltage regulating module TY, filter LA respectively; by output voltage, the output current of continuously monitoring transformer T; signal such as frequency, duty ratio; and information delivered among the microcomputer N; by comparing with system's rated value and default value; by controller KZG employing also is conventional control circuit; effect is the output of regulating transformer T, realizes functions such as constant voltage control, Energy Saving Control, electric field breakdown protection tracking Control, load response control.The output of transformer T is hung 8 with the insulation of mouse cage electrode 2 and is connected.Its pulse duration 30～10000 μ s, inter-train pause 30～10000 μ s, pulse frequency 50～2000Hz is adjustable continuously, and the field voltage waveform is the unidirectional pulse square wave.
Claims (1)
1. crude oil desalting/dehydration frequency conversion voltage adjusting pulse electric control gear, it is characterized in that: it is by transformer (T), microcomputer (N), controller (KZG), voltage regulating module (TY), filter (LA) is formed, the alternating current of 380V is organized into impulse circuit by filter (LA) with alternating current, the size back of being adjusted voltage by voltage regulating module (TY) joins with transformer (T), microcomputer (N) respectively with transformer (T), controller (KZG), voltage regulating module (TY), filter (LA) connects, the pulse duration that described frequency conversion voltage adjusting pulse electric control gear sends is 30～10000 μ s, inter-train pause 30～10000 μ s, pulse frequency 50～2000Hz is adjustable continuously, and the field voltage waveform is the unidirectional pulse square wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202981016U CN201717803U (en) | 2009-12-28 | 2009-12-28 | Electric-controlled frequency-converting and voltage-regulating pulse desalting/dehydrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202981016U CN201717803U (en) | 2009-12-28 | 2009-12-28 | Electric-controlled frequency-converting and voltage-regulating pulse desalting/dehydrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717803U true CN201717803U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202981016U Expired - Fee Related CN201717803U (en) | 2009-12-28 | 2009-12-28 | Electric-controlled frequency-converting and voltage-regulating pulse desalting/dehydrating device |
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| Country | Link |
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| CN (1) | CN201717803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542970A (en) * | 2019-09-20 | 2021-03-23 | 中国石油化工股份有限公司 | Power supply control method, device and system and machine-readable storage medium |
-
2009
- 2009-12-28 CN CN2009202981016U patent/CN201717803U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542970A (en) * | 2019-09-20 | 2021-03-23 | 中国石油化工股份有限公司 | Power supply control method, device and system and machine-readable storage medium |
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| 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: 20110119 Termination date: 20161228 |