CN101345492A - Primary oil electric dehydration energy-saving high power pulse power supply and its generation method - Google Patents
Primary oil electric dehydration energy-saving high power pulse power supply and its generation method Download PDFInfo
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Abstract
The invention relates to an energy saving and large pulse power supply for crude oil electric dehydration and the production method thereof. The large pulse power supply comprises a low voltage dc power supply device outputting a low voltage dc power supply, a large power inversion device inverting the low voltage dc power supply and outputting a bipolar low voltage pulse power supply, a pulse transformer device improving voltage of the bipolar low voltage pulse power supply and outputting a high voltage dc power supply, a pulse switch device making the high voltage dc power supply be a high voltage and high frequency pulse power supply output to a load, a detection device and a control device. Firstly the bipolar low voltage pulse power supply is formed by the treatments of rectification, filter and inversion to the ac power supply, then the high voltage dc power supply is formed by treatments of voltage rise, rectification and filter to the pulse transformer, finally the high voltage and high frequency pulse power supply is formed by crossing the pulse switch with a complementary structure. The energy saving and large pulse power supply of the invention has advantages of frequency modulation, amplitude modulation, pulse width modulation, wide current range, non-harmonic pollution, energy conservation and small size or the like.
Description
Technical field
The present invention relates to a kind of high-frequency and high-voltage great power pulse power source, especially a kind of primary oil electric dehydration energy-saving high power pulse power supply and production method thereof.
Background technology
Studies show that the high-frequency and high-voltage great power pulse power source has good application prospects in petrochemical industry (as production technologies such as electric demulsification, solvent extraction, water-oil separatings).But up to the present, also there are more technical problem in Frequency Adjustable, amplitude modulation, accent pulsewidth, energy-conservation high-frequency and high-voltage great power pulse power source that prior art is manufactured, and therefore the high-frequency and high-voltage great power pulse power source does not also have application example in petrochemical industry at present.
Chinese patent (application number 200610008306.7) has proposed a kind of " production method of hf and hv pulse power supply and high-frequency and high-voltage electric pulse ", be a kind of by " friendship-straight-superimposed pulses is boosted " generation hf and hv pulse (High Voltage High Frequency Pulse, abbreviation HVHFP) technical scheme of power supply, this HVHFP power supply is introduced on the high-frequency electrical dehydrator battery lead plate through high-voltage explosion-proof interface and High-Voltage Insulation rod, can in electric dehydrator, be formed the high-frequency impulse electric field and dewater.Practical application shows that the technical scheme of this HVHFP power supply of prior art also needs further perfect, is mainly reflected in:
(1) because there is conditions of streaking in impulse waveform, be difficult to the pulse dehydrating effect that reaches desirable, the rising and falling edges steepness of impulse waveform is poor, makes that the anxious poly-property of energy is poor in dehydration;
(2) link before rectifying part owing to used Industrial Frequency Transformer, makes that the whole system power consumption is very big, still has certain energy saving space, simultaneously because the use of Industrial Frequency Transformer makes that the volume of whole device is bigger;
(3) voltage regulation accuracy is not high.
Summary of the invention
The purpose of this invention is to provide a kind of primary oil electric dehydration energy-saving high power pulse power supply and production method thereof, when possessing Frequency Adjustable, amplitude modulation, accent pulsewidth, have characteristics such as good, the energy-conservation and volume of output pulse waveform is little.
To achieve these goals, the invention provides a kind of primary oil electric dehydration energy-saving high power pulse power supply, comprising:
The low-voltage DC source apparatus is used for that low-voltage AC is carried out rectifying and wave-filtering and handles, the low-voltage dc power supply of output amplitude through adjusting;
The high power contravariant device is connected with described low-voltage DC source apparatus, is used for that described low-voltage dc power supply is carried out inversion and handles, by the bipolarity action of low-voltage pulse power supply of duty ratio modulation output amplitude through adjusting;
Pulse transformer arrangement is connected with described high power contravariant device, is used for described bipolarity action of low-voltage pulse power supply being boosted and the rectifying and wave-filtering processing output high-voltage DC power supply;
The pulse switch device is connected with described pulse transformer arrangement, to the high voltagehigh frequency pulse power of load output frequency through adjusting;
Checkout gear is used to monitor electric current and the voltage that described pulse switch device is exported the high voltagehigh frequency pulse power, obtains output parameter;
Control device, be connected with checkout gear with described low-voltage DC source apparatus, high power contravariant device, pulse switch device respectively, be used for regulating the amplitude of the amplitude of described low-voltage dc power supply, described bipolarity action of low-voltage pulse power supply and the frequency of the described high voltagehigh frequency pulse power according to described output parameter.
Described high power contravariant device comprises inverter circuit and drive circuit, the input of described inverter circuit is connected with the low-voltage DC source apparatus, output is connected with pulse transformer arrangement, control end is connected with control device by inverse changing driving circuit, described inverter circuit is used for that described low-voltage dc power supply is carried out inversion and handles acquisition bipolarity action of low-voltage pulse power supply, and adjust the duty ratio of described bipolarity action of low-voltage pulse power supply according to the control signal of control device output, by adjusting the bipolarity action of low-voltage pulse power supply of pulse duration output amplitude through adjusting.
Described pulse transformer arrangement comprises N highpowerpulse transformer and N impulse commutation filter circuit, to the boost former limit parallel connection of N highpowerpulse transformer handling of described bipolarity action of low-voltage pulse power supply, and be connected with described high power contravariant device, the secondary of each highpowerpulse transformer is connected with the input of an impulse commutation filter circuit, carry out the output of N impulse commutation filter circuit of rectifying and wave-filtering processing and connect successively, the positive output end of first current rectifying and wave filtering circuit is connected with described pulse switch device with the negative output terminal of N current rectifying and wave filtering circuit.
Described pulse switch device comprises the first pulse switch group of connecting with load and the second pulse switch group in parallel with load, the first pulse switch group that forms complementary structure is connected with described control device with the second pulse switch group, and another one pulse switch group disconnects when being led to by pulse switch winding of described control device control.Each pulse switch group comprises the pulse switch that several are connected in series, and each pulse switch is connected with driver element, and described driver element is connected with described control device by control interface, and described driver element is control impuls driving transformer or optical fiber driver module.
On the technique scheme basis, described control device comprises:
The parameter acquisition module is connected with described checkout gear, is used for receiving output parameter from checkout gear;
The low-voltage dc power supply control module is connected with described low-voltage DC source apparatus, by controlling the amplitude that the controllable silicon trigger angle is regulated described low-voltage dc power supply;
The pulse width modulation module is connected with described high power contravariant device, regulates the amplitude of described bipolarity action of low-voltage pulse power supply by pulse width modulation;
The pulse switch control module is connected with described pulse switch device, regulates the frequency of the described high voltagehigh frequency pulse power by on-off mode;
Central processing module, be connected with described parameter acquisition module, low-voltage dc power supply control module, pulse width modulation module and pulse switch control module respectively, be used for according to described output parameter by the low-voltage dc power supply control module control the amplitude of the low-voltage dc power supply of described low-voltage DC source apparatus output, by the described high power contravariant device output of pulse width modulation module controls bipolarity action of low-voltage pulse power supply amplitude and control the frequency of the high voltagehigh frequency pulse power of described pulse switch device output by the pulse switch control module.
To achieve these goals, the present invention also provides a kind of production method of primary oil electric dehydration energy-saving high power pulse power supply, comprising:
Wherein, described step 20 specifically comprises: low-voltage dc power supply is carried out inversion handle acquisition bipolarity action of low-voltage pulse power supply, by adjusting the duty ratio of described bipolarity action of low-voltage pulse power supply, by adjusting the bipolarity action of low-voltage pulse power supply of pulse duration output amplitude through adjusting.
Wherein, described step 30 specifically comprises: the highpowerpulse transformer of N former limit parallel connection is to the processing of boosting of described bipolarity action of low-voltage pulse power supply, the impulse commutation filter circuit that N output connected successively carries out rectifying and wave-filtering to the output of each highpowerpulse transformer respectively to be handled, and makes the positive output end of first current rectifying and wave filtering circuit and high-voltage DC power supply of negative output terminal output of N current rectifying and wave filtering circuit.
Wherein, described step 40 specifically comprises: adopt the complementary type pulse switch group that the first pulse switch group is connected with load, the second pulse switch group is in parallel with load, described high-voltage DC power supply is processed into the high voltagehigh frequency pulse power of adjusting to the frequency process of load output, after the first pulse switch group disconnects, the second pulse switch winding is logical, make the second pulse switch group and load constitute a discharge loop, by rapid discharge eliminate the waveform hangover, pulse rising and falling edges steepness is poor.
The invention provides a kind of primary oil electric dehydration energy-saving high power pulse power supply and production method thereof, handle formation bipolarity action of low-voltage pulse power supply by AC power being carried out rectification control, filtering and inversion, boost by pulse transformer and rectifying and wave-filtering processing formation high-voltage DC power supply, the pulse switch group through complementary structure forms the high voltagehigh frequency pulse power at last again.Compare with the prior art that adopts " handing over-straight-superimposed pulses ", control device of the present invention is by the driving pulse of IGBT device in the control high power contravariant device, thereby change the output duty cycle of the bipolarity action of low-voltage pulse power supply of high power contravariant device output, reached the purpose of regulating HVHFP power supply amplitude, the voltage regulation accuracy height; Owing to use pulse transformer to replace the Industrial Frequency Transformer of prior art, and adopted the integrated morphology that the former limit of many group pulses transformer is in parallel and secondary is connected, not only reach purpose of energy saving, but also overcome the technical limitations of present manufacturing highpowerpulse transformer; Owing to adopt complementary type pulse switch group, efficiently solve the conditions of streaking of impulse waveform in the prior art, make the present invention in crude oil electric dewatering, can really reach the pulse dehydrating effect, further can also realize any adjusting of frequency.In a word, the present invention have that Frequency Adjustable, amplitude modulation, accent pulsewidth, current range are wide, no-harmonic wave pollution, energy-conservation, advantage such as volume is little.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of primary oil electric dehydration energy-saving high power pulse power supply embodiment of the present invention;
Fig. 2 is the structural representation of high power contravariant device of the present invention;
Fig. 3 a～Fig. 3 d regulates the principle schematic of bipolarity action of low-voltage pulse power supply amplitude for the present invention;
Fig. 4 is the structural representation of pulse transformer arrangement of the present invention;
Fig. 5 is the structural representation of pulse switch device of the present invention;
Fig. 6 is the schematic diagram of output pulse waveform of the present invention;
Fig. 7 is the structural representation of control device of the present invention;
Fig. 8 is the schematic diagram of control device constant current control of the present invention;
Fig. 9 is the flow chart of the production method of primary oil electric dehydration energy-saving high power pulse power supply of the present invention.
Description of reference numerals:
2-low-voltage DC source apparatus; 3-high power contravariant device; The 4-pulse transformer arrangement;
5-pulse switch device; The 6-load; The 7-control device;
The 8-checkout gear; The 31-inverter circuit; The 32-protective circuit;
The 33-inverse changing driving circuit; 41
1-the first pulse transformer; 41
2-the second pulse transformer;
41
3-Di three pulse transformers; 41
N-Di N pulse transformer; 42
1-the first current rectifying and wave filtering circuit;
42
2-the second current rectifying and wave filtering circuit; 42
3-Di three current rectifying and wave filtering circuits; 42
N-Di N current rectifying and wave filtering circuit;
The 51-first pulse switch group; The 52-second pulse switch group; 53-first driver element;
54-second driver element; The 71-central processing module; 72-parameter acquisition module;
73-pulse width modulation module; 74-pulse switch control module; 75-low-voltage dc power supply control module.
Embodiment
Fig. 1 is the structural representation of primary oil electric dehydration energy-saving high power pulse power supply embodiment of the present invention.As shown in Figure 1, the present embodiment primary oil electric dehydration energy-saving high power pulse power supply comprises low-voltage DC source apparatus 2, high power contravariant device 3, pulse transformer arrangement 4, pulse switch device 5, control device 7 and checkout gear 8, wherein, low-voltage DC source apparatus 2 is used for that low-voltage AC is carried out rectifying and wave-filtering to be handled, the low-voltage dc power supply of output amplitude through adjusting, in the present embodiment, low-voltage DC source apparatus 2 comprises ac power supply apparatus that is used for the output AC electricity and the AC rectification filter that AC power is carried out the AC rectification Filtering Processing.High power contravariant device 3 is connected with low-voltage DC source apparatus 2, is used for that low-voltage dc power supply is carried out inversion and handles, by the bipolarity action of low-voltage pulse power supply of duty ratio modulation output amplitude through adjusting.Pulse transformer arrangement 4 is connected with high power contravariant device 3, is used for bipolarity action of low-voltage pulse power supply being boosted and the rectifying and wave-filtering processing output high-voltage DC power supply.Pulse switch device 5 is connected with pulse transformer arrangement 4, is used for high-voltage DC power supply is handled, and to the high voltagehigh frequency pulse power of load 6 output frequencies through adjusting, in actual the use, load can be the drain sump in the crude oil electric dewatering.Checkout gear 8 is connected the two ends of load 6, is used to monitor the electric current and the voltage of the pulse switch device 5 output high voltagehigh frequency pulse powers, obtains output parameter.Control device 7 is connected with low-voltage DC source apparatus 2, high power contravariant device 3, pulse switch device 5 and checkout gear 8 respectively, the frequency of the amplitude of the amplitude of the low-voltage dc power supply that the output parameter adjusting low-voltage DC source apparatus 2 that is used for monitoring according to checkout gear 8 is exported, the bipolarity action of low-voltage pulse power supply of high power contravariant device 3 outputs and the high voltagehigh frequency pulse power of pulse switch device 5 outputs.
In the present embodiment, AC power can be exported a 380V alternating current; The AC rectification filter adopts controllable silicon trigger angle control mode that this 380V alternating current is carried out rectifying and wave-filtering and handles, and exports the low-voltage dc power supply that amplitude is controlled; This low-voltage dc power supply is handled by the inversion of high power contravariant device 3, and by pulse width modulation, exports the controlled bipolarity action of low-voltage pulse power supply of a fixed-frequency and pulse duration; This bipolarity action of low-voltage pulse power supply boosts and the rectifying and wave-filtering processing by pulse transformer arrangement, exports a high-voltage DC power supply; This high-voltage DC power supply by the pulse switch device after, become a high voltagehigh frequency pulse (HVHFP) power supply; And this HVHFP power supply is loaded into the two ends of load 6; The amplitude of this HVHFP power supply output is adjusted by the low-voltage DC source apparatus 2 of controlled device 7 controls and the high power contravariant device 3 of controlled device 7 controls, the frequency of this HVHFP power supply output is adjusted by the pulse switch device 5 of controlled device 7 controls, realization is to the control of the amplitude and the frequency of HVHFP power supply, to satisfy the whole system requirement.
Fig. 2 is the structural representation of high power contravariant device of the present invention.As shown in Figure 2; high power contravariant device 3 comprises inverter circuit 31, protective circuit 32 and inverse changing driving circuit 33; wherein the input of inverter circuit 31 is connected with low-voltage DC source apparatus 2; its output is connected with pulse transformer arrangement 4, and its control end is connected with control device 7 by inverse changing driving circuit 33.Inverter circuit 31 is used for the low-voltage dc power supply of low-voltage DC source apparatus 2 outputs is carried out the inversion processing; obtain a bipolarity action of low-voltage pulse power supply and to pulse transformer arrangement 4 output; protective circuit 32 is connected with inverter circuit 31; be used to provide protection; one end of inverse changing driving circuit 33 is connected with control device 7; be used for receiving control signal from control device 7; the other end of inverse changing driving circuit 33 is connected with inverter circuit 31; be used for to inverter circuit 31 input control signals, with the amplitude of the bipolarity action of low-voltage pulse power supply of regulating inverter circuit 31 outputs.In the above-mentioned technical solutions of this embodiment, control device 7 adopts pulse width modulation (PWM) mode recently to reach the purpose of regulating its amplitude by the duty of the bipolarity action of low-voltage pulse power supply of adjusting high power contravariant device 3 outputs.
Fig. 3 a～Fig. 3 d regulates the principle schematic of bipolarity action of low-voltage pulse power supply amplitude for the present invention.When the no-load voltage ratio of pulse transformer arrangement is 1: 1, the waveform of Fig. 3 a through pulse transformer arrangement boost and after rectifying and wave-filtering handled, the waveform under the reference axis just upset had become positive waveform, shown in Fig. 3 b, its amplitude does not change; If by changing the duty ratio of positive negative wave among Fig. 3 a, obtain the waveform shown in Fig. 3 c, after boost and the rectifying and wave-filtering of process pulse transformer arrangement handled, the waveform that obtains at last was shown in Fig. 3 d, because the duty ratio of output waveform changes, therefore the average voltage of output will change.By duty ratio formula D=T
ON/ (T
ON+ T
OFF), wherein D represents duty ratio, T
ONRepresent turn-on time, T
OFFThe expression turn-off time, average voltage U=D * V as can be known, wherein U represents average voltage, V represents the voltage peak, therefore by changing duty ratio, has reached the purpose of regulating the output high-accuracy voltage.In regulating control procedure, keep the frequency of pulse transformer arrangement work constant, thereby pulse transformer arrangement is operated on the designed frequency simultaneously, can reach the purpose of maximum energy-saving.Annotatedly be, desire to make pulse transformer arrangement energy-conservation, in design process, can determine its operating frequency by manufactured materials, and must be constant in pulse transformer arrangement its operating frequency in service.The control device of present embodiment is by the driving pulse of IGBT device in the control high power contravariant device, thereby change the output duty cycle of the bipolarity action of low-voltage pulse power supply of high power contravariant device output, reach the purpose of regulating HVHFP power supply amplitude, have system's degree of regulation advantages of higher.
Fig. 4 is the structural representation of pulse transformer arrangement of the present invention.As shown in Figure 4, pulse transformer arrangement of the present invention (also claiming the PC/DC circuit bank) comprises N highpowerpulse transformer and N impulse commutation filter circuit, N is a positive integer, N highpowerpulse transformer is used for respectively the processing of boosting of bipolarity action of low-voltage pulse power supply is comprised first pulse transformer 41
1, second pulse transformer 41
2, the 3rd pulse transformer 41
3..., N pulse transformer 41
N, N impulse commutation filter circuit is used for the power supply that boosts after handling is carried out the rectifying and wave-filtering processing, comprises first current rectifying and wave filtering circuit 42
1, second current rectifying and wave filtering circuit 42
2, the 3rd current rectifying and wave filtering circuit 42
3..., N current rectifying and wave filtering circuit 42
NFirst pulse transformer 41 wherein
1, second pulse transformer 41
2..., N pulse transformer 41
NThe parallel connection of former limit, and be connected with high power contravariant device 3, the secondary of each highpowerpulse transformer is connected with the input of an impulse commutation filter circuit, i.e. first pulse transformer 41
1The secondary and first current rectifying and wave filtering circuit 42
1Input connect second pulse transformer 41
2The secondary and second current rectifying and wave filtering circuit 42
2Input connect ..., N pulse transformer 41
NSecondary and N current rectifying and wave filtering circuit 42
NInput connect, each impulse commutation filter circuit carries out rectifying and wave-filtering to the power supply after handling of boosting through a highpowerpulse transformer respectively to be handled, and obtains N medium voltage DC source; The output of N impulse commutation filter circuit is connected successively, i.e. first current rectifying and wave filtering circuit 42
1The negative output terminal and second current rectifying and wave filtering circuit 42
2Positive output end connect second current rectifying and wave filtering circuit 42
2Negative output terminal and the 3rd current rectifying and wave filtering circuit 42
3Positive output end connect ..., N-1 impulse commutation filter circuit 42
N-1Negative output terminal and N current rectifying and wave filtering circuit 42
NPositive output end connect, N medium voltage DC subject string joined, make first current rectifying and wave filtering circuit 42
1Positive output end and N current rectifying and wave filtering circuit 42
NHigh-voltage DC power supply of the final output of negative output terminal.
Need to prove that exist electric energy to decrease big and the too huge technological deficiency of volume at prior art HPHVP power supply, the present invention can realize the purpose energy-conservation, that volume is little by the technical scheme that adopts pulse transformer arrangement.Since the voltage that single highpowerpulse transformer is subjected to former limit of pulse transformer and secondary all can not excessive and former limit and the no-load voltage ratio of secondary can not be excessive etc. the technical conditions restriction, the integrated technical scheme of employing highpowerpulse transformer that the above embodiment of the present invention proposes has effectively overcome above-mentioned technical conditions restriction, present embodiment is by adopting the former limit parallel connection of a plurality of pulse transformers, the Integrated Solution of secondary series connection, both solve prior art and adopted the bigger problem of Industrial Frequency Transformer technical scheme power consumption, has compact conformation again, advantages such as volume is little have realized energy-conservation and have reduced the purpose of volume.
Fig. 5 is the structural representation of pulse switch device of the present invention.As shown in Figure 5, pulse switch device of the present invention (also claiming the DC/PC circuit) comprises that the first pulse switch group 51 and the second pulse switch group, 52, the first pulse switch groups 51 connect with load 6, and the second pulse switch group 52 is in parallel with load 6, forms complementary structure.In actual the use, the first pulse switch group 51 can be serially connected in first current rectifying and wave filtering circuit 42 of pulse transformer arrangement 4
1Positive output end and load 6 between, the other end of load 6 connects the N current rectifying and wave filtering circuit 42 of pulse transformer arrangement 4
NNegative output terminal, the first pulse switch group 51 also can be serially connected in the N current rectifying and wave filtering circuit 42 of pulse transformer arrangement 4
NNegative output terminal and load 6 between, the other end of load 6 connects first current rectifying and wave filtering circuit 42 of pulse transformer arrangement 4
1Positive output end, form cascaded structure with load 6.Particularly, the first pulse switch group 51 comprises the pulse switch that several are connected in series, each pulse switch all is connected with first driver element 53, and first driver element 53 that is connected with control device 7 by control interface is used to control being switched on or switched off of the first pulse switch group 51; The second pulse switch group 52 comprises the pulse switch that several are connected in series, and each pulse switch all is connected with second driver element 54, and second driver element 54 that is connected with control device 7 by control interface is used to control being switched on or switched off of the second pulse switch group 52.This structure makes the first pulse switch group 51 and the second pulse switch group 52 form complementary structure, control signal by control device 7 makes a pulse switch winding logical, another one pulse switch group disconnects, promptly after the first pulse switch group 51 disconnects, the second pulse switch group 52 is connected, make the second pulse switch group 52 constitute a discharge loop with load 6, discharge rapidly by the second pulse switch group 52, therefore effectively eliminated technical problems such as the hangover that the prior art output waveform exists, pulse rising and falling edges steepness difference.
Fig. 6 is the schematic diagram of output pulse waveform of the present invention, wherein dotted line is the impulse waveform of prior art, there is conditions of streaking, solid line is an impulse waveform of the present invention, output waveform does not have hangover, so the present invention utilizes the complementary structure of the first pulse switch group and the formation of the second pulse switch group to solve the conditions of streaking of impulse waveform well.In the technique scheme of the present invention, each driver element can also connect a protective circuit.
In the technique scheme of the present invention, driver element can adopt two kinds of technical schemes to realize.A kind of is to adopt control impuls driving transformer scheme, and driver element adopts the control impuls driving transformer, and an end of control impuls driving transformer is connected with pulse switch, and the other end is connected with control device by control interface; Another kind is to adopt optical fiber driver module scheme, and driver element adopts the optical fiber driver module, and an end of optical fiber driver module is connected with pulse switch, and the other end is connected with control device by control interface.When driver element employing optical fiber driver module scheme, the frequency range of HFHVP power supply can be accomplished any adjusting, and control impuls driving transformer and the extensive use in the prior art of optical fiber driver module repeat no more.
Fig. 7 is the structural representation of control device of the present invention.As shown in Figure 7, control device of the present invention comprises central processing module 71, parameter acquisition module 72, pulse width modulation module 73, pulse switch control module 74 and low-voltage dc power supply control module 75, wherein, parameter acquisition module 72 is connected with checkout gear 8 with central processing module 71, be used for receiving output parameter, and send to central processing module 71 from checkout gear 8; Pulse width modulation module 73 is connected with high power contravariant device 3 with central processing module 71, be used for receiving Control Parameter, adopt pulse width modulation (PWM) mode recently to realize the adjusting of its amplitude by the duty of the bipolarity action of low-voltage pulse power supply of adjusting high power contravariant device 3 outputs from central processing module 71; Pulse switch control module 74 is connected with pulse switch device 5 with central processing module 71, is used for receiving Control Parameter from central processing module 71 frequency of the regulating impulse switching device 5 output high voltagehigh frequency pulse powers; Low-voltage dc power supply control module 75 is connected with low-voltage DC source apparatus 2 with central processing module 71, is used for the amplitude of regulating low-voltage DC source apparatus 2 output low-voltage dc power supplies by control controllable silicon trigger angle; Central processing module 71 respectively with parameter acquisition module 72, pulse width modulation module 73, pulse switch control module 74 is connected with low-voltage dc power supply control module 75, be used for controlling by low-voltage dc power supply control module 75 amplitude of the low-voltage dc power supply of low-voltage DC source apparatus 2 outputs according to the output parameter of parameter acquisition module 72, regulate the amplitude of the bipolarity action of low-voltage pulse power supply of high power contravariant device 3 outputs by pulse width modulation module 73, and the frequency of passing through the high voltagehigh frequency pulse power of pulse switch control module 74 regulating impulse switching devices 5 outputs.
Because the drain sump (load) in the crude oil electric dewatering requires constant current output, in therefore actual the use, control device of the present invention is also by low-voltage DC source apparatus and pulse transformer arrangement control constant current output.Fig. 8 is the schematic diagram of control device constant current control of the present invention.As shown in Figure 8, comprise current PI adjuster and voltage pi regulator in the control device, gather a measured current I from load, with reference current value I
REFObtain a reference voltage level U through the current PI adjuster
REF, gather a tested voltage U from the output of pulse transformer arrangement, with reference voltage level U
REFObtain corresponding operating control signal through the overvoltage pi regulator, the low-voltage DC source apparatus is adjusted the electric current of low-voltage dc power supply according to this operating control signal, as coarse adjustment, pulse transformer arrangement according to this adjusted signal adjust bipolarity action of low-voltage pulse power supply electric current, as the accurate adjustment process, make the present invention finally export a constant current value through two two closed-loop controls.
The invention provides a kind of primary oil electric dehydration energy-saving high power pulse power supply, handle formation bipolarity action of low-voltage pulse power supply by AC power being carried out rectification control, filtering and inversion, boost by pulse transformer and rectifying and wave-filtering processing formation high-voltage DC power supply, the pulse switch group through complementary structure forms the high voltagehigh frequency pulse power at last again.Compare with the prior art that adopts " handing over-straight-superimposed pulses ", control device of the present invention is by the driving pulse of IGBT device in the control high power contravariant device, thereby change the output duty cycle of the bipolarity action of low-voltage pulse power supply of high power contravariant device output, reached the purpose of regulating HVHFP power supply amplitude, system's degree of regulation height; Owing to use pulse transformer to replace the Industrial Frequency Transformer of prior art, and adopted the integrated morphology that the former limit of many group pulses transformer is in parallel and secondary is connected, not only reach purpose of energy saving, but also overcome the technical limitations of present manufacturing highpowerpulse transformer; Owing to adopt complementary type pulse switch group, efficiently solve the conditions of streaking of impulse waveform in the prior art, make the present invention in crude oil electric dewatering, can really reach the pulse dehydrating effect, further can also realize any adjusting of frequency.In a word, the present invention have that Frequency Adjustable, amplitude modulation, accent pulsewidth, current range are wide, no-harmonic wave pollution, energy-conservation, advantage such as volume is little.
Fig. 9 is the flow chart of the production method of primary oil electric dehydration energy-saving high power pulse power supply of the present invention, specifically comprises:
In technique scheme, described step 10 specifically comprises: low-voltage AC is carried out rectifying and wave-filtering handle, by control controllable silicon trigger angle, the low-voltage dc power supply of output amplitude through adjusting.Described step 20 specifically comprises: low-voltage dc power supply is carried out inversion handle acquisition bipolarity action of low-voltage pulse power supply, by adjusting the duty ratio of described bipolarity action of low-voltage pulse power supply, by adjusting the bipolarity action of low-voltage pulse power supply of pulse duration output amplitude through adjusting.Described step 30 specifically comprises: the highpowerpulse transformer of N former limit parallel connection is to the processing of boosting of described bipolarity action of low-voltage pulse power supply, the impulse commutation filter circuit that N output connected successively carries out rectifying and wave-filtering to the output of each highpowerpulse transformer respectively to be handled, and makes the positive output end of first current rectifying and wave filtering circuit and high-voltage DC power supply of negative output terminal output of N current rectifying and wave filtering circuit.Described step 40 specifically comprises: adopt the complementary type pulse switch group that the first pulse switch group is connected with load, the second pulse switch group is in parallel with load, described high-voltage DC power supply is processed into the high voltagehigh frequency pulse power of exporting to load, after the first pulse switch group disconnects, the second pulse switch winding is logical, make the second pulse switch group and load constitute a discharge loop, by rapid discharge eliminate the waveform hangover, pulse rising and falling edges steepness is poor.
The production method of primary oil electric dehydration energy-saving high power pulse power supply of the present invention can adopt the structure of primary oil electric dehydration energy-saving high power pulse power supply of the present invention, and its course of work describes in detail, repeats no more.
It should be noted that at last: above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
This patent obtains national high-tech research development plan (863 Program) support, project name: high-efficient energy-saving environment friendly crude oil chaos Pulse Electric dehydrator industrialization key technology research (bullets: 2007AA05Z230).
Claims (10)
1. a primary oil electric dehydration energy-saving high power pulse power supply is characterized in that, comprising:
The low-voltage DC source apparatus is used for that low-voltage AC is carried out rectifying and wave-filtering and handles, the low-voltage dc power supply of output amplitude through adjusting;
The high power contravariant device is connected with described low-voltage DC source apparatus, is used for that described low-voltage dc power supply is carried out inversion and handles, by the bipolarity action of low-voltage pulse power supply of duty ratio modulation output amplitude through adjusting;
Pulse transformer arrangement is connected with described high power contravariant device, is used for described bipolarity action of low-voltage pulse power supply being boosted and the rectifying and wave-filtering processing output high-voltage DC power supply;
The pulse switch device is connected with described pulse transformer arrangement, to the high voltagehigh frequency pulse power of load output frequency through adjusting;
Checkout gear is used to monitor electric current and the voltage that described pulse switch device is exported the high voltagehigh frequency pulse power, obtains output parameter;
Control device, be connected with checkout gear with described low-voltage DC source apparatus, high power contravariant device, pulse switch device respectively, be used for regulating the amplitude of the amplitude of described low-voltage dc power supply, described bipolarity action of low-voltage pulse power supply and the frequency of the described high voltagehigh frequency pulse power according to described output parameter.
2. primary oil electric dehydration energy-saving high power pulse power supply according to claim 1, it is characterized in that, described high power contravariant device comprises inverter circuit and drive circuit, the input of described inverter circuit is connected with the low-voltage DC source apparatus, output is connected with pulse transformer arrangement, control end is connected with control device by inverse changing driving circuit, described inverter circuit is used for that described low-voltage dc power supply is carried out inversion and handles acquisition bipolarity action of low-voltage pulse power supply, and adjust the duty ratio of described bipolarity action of low-voltage pulse power supply according to the control signal of control device output, by adjusting the bipolarity action of low-voltage pulse power supply of pulse duration output amplitude through adjusting.
3. primary oil electric dehydration energy-saving high power pulse power supply according to claim 1, it is characterized in that, described pulse transformer arrangement comprises N highpowerpulse transformer and N impulse commutation filter circuit, to the boost former limit parallel connection of N highpowerpulse transformer handling of described bipolarity action of low-voltage pulse power supply, and be connected with described high power contravariant device, the secondary of each highpowerpulse transformer is connected with the input of an impulse commutation filter circuit, carry out the output of N impulse commutation filter circuit of rectifying and wave-filtering processing and connect successively, the positive output end of first current rectifying and wave filtering circuit is connected with described pulse switch device with the negative output terminal of N current rectifying and wave filtering circuit.
4. primary oil electric dehydration energy-saving high power pulse power supply according to claim 1, it is characterized in that, described pulse switch device comprises the first pulse switch group of connecting with load and the second pulse switch group in parallel with load, the first pulse switch group that forms complementary structure is connected with control device with the second pulse switch group, and another one pulse switch group disconnects when being led to by pulse switch winding of described control device control.
5. primary oil electric dehydration energy-saving high power pulse power supply according to claim 4, it is characterized in that, each pulse switch group comprises the pulse switch that several are connected in series, each pulse switch is connected with driver element, described driver element is connected with described control device by control interface, and described driver element is control impuls driving transformer or optical fiber driver module.
6. according to the described primary oil electric dehydration energy-saving high power pulse power supply of arbitrary claim in the claim 1～5, it is characterized in that described control device comprises:
The parameter acquisition module is connected with described checkout gear, is used for receiving output parameter from checkout gear;
The low-voltage dc power supply control module is connected with described low-voltage DC source apparatus, by controlling the amplitude that the controllable silicon trigger angle is regulated described low-voltage dc power supply;
The pulse width modulation module is connected with described high power contravariant device, regulates the amplitude of described bipolarity action of low-voltage pulse power supply by pulse width modulation;
The pulse switch control module is connected with described pulse switch device, regulates the frequency of the described high voltagehigh frequency pulse power by on-off mode;
Central processing module, be connected with described parameter acquisition module, low-voltage dc power supply control module, pulse width modulation module and pulse switch control module respectively, be used for according to described output parameter by the low-voltage dc power supply control module control the amplitude of the low-voltage dc power supply of described low-voltage DC source apparatus output, by the described high power contravariant device output of pulse width modulation module controls bipolarity action of low-voltage pulse power supply amplitude and control the frequency of the high voltagehigh frequency pulse power of described pulse switch device output by the pulse switch control module.
7. the production method of a primary oil electric dehydration energy-saving high power pulse power supply is characterized in that, comprising:
Step 10, low-voltage AC is carried out rectifying and wave-filtering handle the low-voltage dc power supply of output amplitude through adjusting;
Step 20, low-voltage dc power supply is carried out inversion handle, and by the bipolarity action of low-voltage pulse power supply of duty ratio modulation output amplitude through adjusting;
Step 30, described bipolarity action of low-voltage pulse power supply is boosted and rectifying and wave-filtering is handled, the output high-voltage DC power supply;
Step 40, employing complementary type pulse switch group are processed into described high-voltage DC power supply the high voltagehigh frequency pulse power of adjusting to the frequency process of load output.
8. the production method of primary oil electric dehydration energy-saving high power pulse power supply according to claim 7, it is characterized in that, described step 20 specifically comprises: low-voltage dc power supply is carried out inversion handle acquisition bipolarity action of low-voltage pulse power supply, by adjusting the duty ratio of described bipolarity action of low-voltage pulse power supply, the bipolarity action of low-voltage pulse power supply of output amplitude through adjusting.
9. the production method of primary oil electric dehydration energy-saving high power pulse power supply according to claim 7, it is characterized in that, described step 30 specifically comprises: the highpowerpulse transformer of N former limit parallel connection is to the processing of boosting of described bipolarity action of low-voltage pulse power supply, the impulse commutation filter circuit that N output connected successively carries out rectifying and wave-filtering to the output of each highpowerpulse transformer respectively to be handled, and makes the positive output end of first current rectifying and wave filtering circuit and high-voltage DC power supply of negative output terminal output of N current rectifying and wave filtering circuit.
10. the production method of primary oil electric dehydration energy-saving high power pulse power supply according to claim 7, it is characterized in that, described step 40 specifically comprises: adopt the first pulse switch group to connect with load, the complementary type pulse switch group that the second pulse switch group is in parallel with load, described high-voltage DC power supply is processed into the high voltagehigh frequency pulse power of adjusting to the frequency process of load output, after the first pulse switch group disconnects, the second pulse switch winding is logical, make the second pulse switch group and load constitute a discharge loop, eliminate the waveform hangover by rapid discharge, pulse rising and falling edges steepness is poor.
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| CN114362582A (en) * | 2021-12-10 | 2022-04-15 | 核工业西南物理研究院 | Power supply device for high-power pulse magnetron sputtering and control method thereof |
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