CN108654832A - Excitation system of electromagnetic separator - Google Patents
Excitation system of electromagnetic separator Download PDFInfo
- Publication number
- CN108654832A CN108654832A CN201810770134.XA CN201810770134A CN108654832A CN 108654832 A CN108654832 A CN 108654832A CN 201810770134 A CN201810770134 A CN 201810770134A CN 108654832 A CN108654832 A CN 108654832A
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- Prior art keywords
- trigger
- silicon
- voltage
- electromagnetic separator
- separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
- B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
- B03C1/0335—Component parts; Auxiliary operations characterised by the magnetic circuit using coils
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Abstract
The invention discloses an excitation system of an electromagnetic separator, which belongs to the technical field of excitation equipment of a magnetic separator and comprises the electromagnetic separator and a power supply system of an excitation coil of the magnetic separator, wherein the power supply system of the excitation coil of the magnetic separator comprises a power supply, a fuse, a three-phase transformer and a voltage regulation control system, and the voltage regulation control system comprises a contact type voltage regulator, a silicon controlled module, a trigger, a potentiometer and a rectifier bridge group; the fuse input end links to each other with the power, and the three-phase transformer is connected to the fuse output end, and the secondary of three-phase transformer is connected with contact voltage regulator, and contact voltage regulator's output is connected with silicon controlled rectifier module input, and rectifier bridge group is connected to silicon controlled rectifier module's output, and rectifier bridge group output links to each other with the electromagnetic separator, and silicon controlled rectifier module is connected with the trigger, and the potentiometre is connected to the potential level of trigger. The magnetic separator has the advantages of good magnetic mineral separation effect, high excitation efficiency and low loss, and can be widely applied to the field of power supply of the excitation system of the magnetic separator.
Description
Technical field
The present invention relates to electromagnetic separator energizing apparatus technical field, the excitation systems of specifically a kind of electromagnetic separator.
Background technology
In recent decades, electromagnetic separator highest magnetic field intensity develops to 20000GS by 2000GS, in grinding for preparation equipment
In studying carefully, it is set always essentially from mechanical structure with constantly bringing forth new ideas for field coil, the excitation system of magnetic separator power supply is generated
To be single for electric installation, the voltage of held stationary, and ignore the influence by the regulation and control of voltage to field waveform.
Notification number is that the patent of CN105099308B discloses a kind of generator excitation unit, is related to synchronous machinery excitation control
Field processed, it is intended to field-forcing function be separated from original excitation system, effectively reduce three-phase transformer secondary side winding
Voltage and capacity, and then reduce cost, improve system reliability.Technical key point includes：It is normal field power supply, N number of
Rectifier bridge and controller；The first input end of N number of rectifier bridge is connect with one end of normal field power supply, and the of the rectifier bridge of N
Two input terminals are connect with the other end of normal field power supply；N is the integer more than 0；Further include encourage by force power supply and N+1 it is whole
Flow bridge；The first input end of the N+1 rectifier bridge is connect with the one end for encouraging power supply by force, the second input terminal of the N+1 rectifier bridge
It is connect with the other end for encouraging power supply by force；The positive output end of N+1 rectifier bridge links together, and reversed-phase output is connected to one
It rises；Controller with each rectifier bridge there is signal to connect；Publication No. is that the patent document of CN106936281A discloses one kind
The excitation unit of AC exciter, including：Gas-turbine；The main generator being connected by shaft with the rotor of gas-turbine；
The rotating rectifier that three-phase alternating current is converted into DC current and is powered to the Exciting Windings for Transverse Differential Protection of main generator；By armature
The three-phase alternating current flow-thru electrode that winding and d axis Exciting Windings for Transverse Differential Protection and q axis Exciting Windings for Transverse Differential Protection constitute and sent out armature winding
To the AC exciter of rotating rectifier；The excitation unit that AC exciter is driven when main generator starts；And
Electric current is provided to the field power supply of excitation unit.Excitation unit is made of 2 single-phase inverters, therefore can quick-response excitation
The action of device, or on startup, can also excitation be formed to the Exciting Windings for Transverse Differential Protection of main generator, and normal in low speed rotation
When, identical excitation unit also is used to excitation, so as to simplify circuit, the excitation unit of the invention is all made of burning voltage progress
Power supply, ignores the influence to field waveform by the regulation and control of voltage, is imitated to cause electromagnetic separator to sort magnetic mineral
The bad problem of fruit.
Invention content
In view of this, in view of the deficiencies of the prior art, the present invention provides a kind of magnetic mineral efficiency of separation it is high, effect
It is good, the excitation system of low electromagnetic separator is lost.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of excitation system of electromagnetic separator,
Including electromagnetic separator and magnetic separator magnetizing coil power supply system, the magnetic separator magnetizing coil power supply system includes power supply, melts
Disconnected device, three-phase transformer and voltage control system, the voltage control system include contact type voltage regulator, silicon controlled module, touch
Send out device, potentiometer and rectifier bridge group；The fuse input terminal is connected with the power supply, described in the fuse output end connection
Three-phase transformer, three-phase transformer pair side are connect with the contact type voltage regulator, the output end of the contact type voltage regulator
It is connect with the silicon controlled module input terminal, the output end of the silicon controlled module connects the rectifier bridge group, the rectifier bridge
Group output end is connected with the electromagnetic separator, and the silicon controlled module is connect with the trigger, the current potential of the trigger
Shelves connect the potentiometer.
Preferably, the contact type voltage regulator is three phase voltage regulating device, is connected to three-phase transformer pair side, is risen secondary
The effect of pressure regulation.
Preferably, the silicon controlled module include three silicon-controlled modules, three silicon-controlled modules respectively with it is described
The three of contact type voltage regulator are connected, and the silicon-controlled module is made of two one-way SCR reverse parallel connections, are used for voltage wave
The control of shape and frequency of delivery.
Preferably, the rectifier bridge group is the three phase full bridge rectification group of six diodes composition, every two diodes connection
At a bridge arm.
Preferably, trigger tool is there are three trigger terminal, is respectively completed three-phase triggering, the trigger terminal with it is described
The control pole of silicon-controlled module connects, and the common end of the trigger, primary input end and 5v terminals are corresponding to the potentiometer
Terminal, which corresponds to, to be connected.
Preferably, the triggering mode of the trigger is zero cross fired, makes the intermittent unlatching in voltage turn-on angle and interruption.
Preferably, the rated voltage of the fuse is consistent with circuit ceiling voltage.
Preferably, three-phase transformer rated voltage ratio circuit ceiling voltage is 1.5 times big.
Compared with prior art, beneficial effects of the present invention are as follows：
380V, 50Hz alternating current of national grid are passed through transformation, rectification and a system by the excitation system of electromagnetic separator of the present invention
The regulation and control of row control element and protection generate suitable voltage and electric current and supply coil with electromagnetic separator, to generate for
The magnetic field of sorting mined material adjusts magnetic fluctuation range and magnetic field power, to reach magnetic by the control to output voltage waveforms
The field transformation controllable in moment makes the magnetic mineral into sorting bin form aggregation-pine during converting in the magnetic field instant
The effect for dissipating-assembling, to improve concentrate grade and the rate of recovery.
Voltage control system is triggered by zero trigger mode, makes the intermittent unlatching in voltage turn-on angle and interruption, one
The interval transmission mode that very fast transformation is formed in fixed cycle, is combined using potentiometer with contact type voltage regulator two-by-two, completes voltage
The control of amplitude fluctuations range and period of waves, to make the magnetic field that electric field generates that corresponding variation occur, formation has certain
The magnetic field of characteristic achievees the purpose that improve magnetic mineral separating effect.
In addition, rectifier bridge group filters out clutter to reach the stability of voltage, the rated voltage of the fuse and circuit
Ceiling voltage is consistent, and avoids circuit overlond running, three-phase transformer rated voltage ratio circuit ceiling voltage 1.5 times big
Left and right ensures that the enough load capacity of three-phase transformer, the contact type voltage regulator are three-phase type pressure regulator, leans on rotatable handle tune
The size for saving output voltage plays secondary pressure regulation and it is not whole to form pressure regulation with circuit in series after the silicon-controlled parallel connection two-by-two
Road is flowed back to, the control of voltage waveform and frequency of delivery is convenient for.
Description of the drawings
Fig. 1 is the structural circuit figure of the present invention；
Wherein, 1- power supplys, 2- fuses, 3- three-phase transformers, 4- contact type voltage regulators, 5- silicon controlled modules, 6- rectifier bridge groups,
7- electromagnetic separators, 8- triggers, 9- potentiometers.
Specific implementation mode
For a better understanding of the present invention, present disclosure, but this hair are further fairly set out with reference to embodiment
Bright protection content is not limited solely to the following examples.In the following description, give a large amount of concrete details so as to
More thorough understanding of the invention is provided.It will be apparent, however, to one skilled in the art that the present invention can be with
It is carried out without one or more of these details.
Embodiment one
As shown in Figure 1, a kind of excitation system of electromagnetic separator, including electromagnetic separator 7 and magnetic separator magnetizing coil power supply system
System, the magnetic separator magnetizing coil power supply system include power supply 1, fuse 2, three-phase transformer 3 and voltage control system, described
Voltage control system includes contact type voltage regulator 4, silicon controlled module 5, trigger 8, potentiometer 9 and rectifier bridge group 6；The fusing
2 input terminal of device is connected with the power supply 1, and 2 output end of the fuse connects the three-phase transformer 3, the three-phase transformer 3
Secondary side is connect with the contact type voltage regulator 4, the output end of the contact type voltage regulator 4 and 5 input terminal of the silicon controlled module
The output end of connection, the silicon controlled module 5 connects the rectifier bridge group 6,6 output end of rectifier bridge group and the electromagnetism magnetic
Machine 7 is selected to be connected, the silicon controlled module 5 is connect with the trigger 8, and the current potential shelves of the trigger 8 connect the potentiometer
9。
Specifically, the contact type voltage regulator 4 is three phase voltage regulating device, it is connected to the secondary side of the three-phase transformer 3, plays two
The effect of secondary pressure regulation, the silicon controlled module 5 include three silicon-controlled modules, and three silicon-controlled modules connect with described respectively
The three of touch pressure regulator 4 are connected, and the silicon-controlled module is made of two one-way SCR reverse parallel connections, are used for voltage waveform
With the control of frequency of delivery.
The excitation system of the electromagnetic separator of the embodiment of the present invention, by 380V, 50Hz alternating current of national grid by becoming
Pressure, rectification and a series of regulation and control of control elements and protection generate the line of suitable voltage and electric current feeding and electromagnetic separator
Circle, by the control to output voltage waveforms, adjusts magnetic fluctuation range and magnetic field to generate the magnetic field for sorting mined material
Power, to reach the magnetic field transformation controllable in moment, the process that makes the magnetic mineral into sorting bin be converted in the magnetic field instant
In ,-loose-effect assembled is formed and assembles, to improve concentrate grade and the rate of recovery.
Embodiment two
As shown in Figure 1, a kind of excitation system of electromagnetic separator, including electromagnetic separator 7 and magnetic separator magnetizing coil power supply system
System, the magnetic separator magnetizing coil power supply system include power supply 1, fuse 2, three-phase transformer 3 and voltage control system, described
Voltage control system includes contact type voltage regulator 4, silicon controlled module 5, trigger 8, potentiometer 9 and rectifier bridge group 6；The fusing
2 input terminal of device is connected with the power supply 1, and 2 output end of the fuse connects the three-phase transformer 3, the three-phase transformer 3
Secondary side is connect with the contact type voltage regulator 4, the output end of the contact type voltage regulator 4 and 5 input terminal of the silicon controlled module
The output end of connection, the silicon controlled module 5 connects the rectifier bridge group 6,6 output end of rectifier bridge group and the electromagnetism magnetic
Machine 7 is selected to be connected, the silicon controlled module 5 is connect with the trigger 8, and the current potential shelves of the trigger 8 connect the potentiometer
9。
Specifically, the contact type voltage regulator 4 is three phase voltage regulating device, it is connected to the secondary side of the three-phase transformer 3, plays two
The effect of secondary pressure regulation, the silicon controlled module 5 include three silicon-controlled modules, and three silicon-controlled modules connect with described respectively
The three of touch pressure regulator 4 are connected, and the silicon-controlled module is made of two one-way SCR reverse parallel connections, are used for voltage waveform
With the control of frequency of delivery.
The excitation system of the electromagnetic separator of the embodiment of the present invention with embodiment one the difference is that：The rectifier bridge
The three phase full bridge rectification group that group 6 forms for six diodes, every two diodes connect into a bridge arm, form pressure regulation not rectification
The control of voltage waveform and frequency of delivery is convenient in circuit；There are three trigger terminals for the tool of the trigger 8, are respectively completed three and touch
Hair, the trigger terminal are connect with the control pole of the silicon-controlled module, common end, primary input end and the 5v of the trigger 8
Terminal is corresponding with the respective terminal of the potentiometer 9 to be connected.
Embodiment three
As shown in Figure 1, a kind of excitation system of electromagnetic separator, including electromagnetic separator 7 and magnetic separator magnetizing coil power supply system
System, the magnetic separator magnetizing coil power supply system include power supply 1, fuse 2, three-phase transformer 3 and voltage control system, described
Voltage control system includes contact type voltage regulator 4, silicon controlled module 5, trigger 8, potentiometer 9 and rectifier bridge group 6；The fusing
2 input terminal of device is connected with the power supply 1, and 2 output end of the fuse connects the three-phase transformer 3, the three-phase transformer 3
Secondary side is connect with the contact type voltage regulator 4, the output end of the contact type voltage regulator 4 and 5 input terminal of the silicon controlled module
The output end of connection, the silicon controlled module 5 connects the rectifier bridge group 6,6 output end of rectifier bridge group and the electromagnetism magnetic
Machine 7 is selected to be connected, the silicon controlled module 5 is connect with the trigger 8, and the current potential shelves of the trigger 8 connect the potentiometer
9。
Specifically, the contact type voltage regulator 4 is three phase voltage regulating device, it is connected to the secondary side of the three-phase transformer 3, plays two
The effect of secondary pressure regulation, the silicon controlled module 5 include three silicon-controlled modules, and three silicon-controlled modules connect with described respectively
The three of touch pressure regulator 4 are connected, and the silicon-controlled module is made of two one-way SCR reverse parallel connections, are used for voltage waveform
With the control of frequency of delivery.
The excitation system of the electromagnetic separator of the embodiment of the present invention, with embodiment one, two the difference is that：It is described to touch
The triggering mode for sending out device 8 is zero cross fired, and voltage control system triggered using zero trigger mode, is made between voltage turn-on angle
Formula of having a rest is opened and is interrupted, and is formed the interval transmission mode of very fast transformation in some cycles, is utilized potentiometer and contact pressure regulation
Device combines two-by-two, completes the control of voltage magnitude fluctuation range and period of waves, corresponding to make the magnetic field that electric field generates occur
Variation, formed with certain characteristic magnetic field, achieve the purpose that improve magnetic mineral separating effect.
Example IV
As shown in Figure 1, a kind of excitation system of electromagnetic separator, including electromagnetic separator 7 and magnetic separator magnetizing coil power supply system
System, the magnetic separator magnetizing coil power supply system include power supply 1, fuse 2, three-phase transformer 3 and voltage control system, described
Voltage control system includes contact type voltage regulator 4, silicon controlled module 5, trigger 8, potentiometer 9 and rectifier bridge group 6；The fusing
2 input terminal of device is connected with the power supply 1, and 2 output end of the fuse connects the three-phase transformer 3, the three-phase transformer 3
Secondary side is connect with the contact type voltage regulator 4, the output end of the contact type voltage regulator 4 and 5 input terminal of the silicon controlled module
The output end of connection, the silicon controlled module 5 connects the rectifier bridge group 6,6 output end of rectifier bridge group and the electromagnetism magnetic
Machine 7 is selected to be connected, the silicon controlled module 5 is connect with the trigger 8, and the current potential shelves of the trigger 8 connect the potentiometer
9。
Specifically, the contact type voltage regulator 4 is three phase voltage regulating device, it is connected to the secondary side of the three-phase transformer 3, plays two
The effect of secondary pressure regulation, the silicon controlled module 5 include three silicon-controlled modules, and three silicon-controlled modules connect with described respectively
The three of touch pressure regulator 4 are connected, and the silicon-controlled module is made of two one-way SCR reverse parallel connections, are used for voltage waveform
With the control of frequency of delivery.
The excitation system of the electromagnetic separator of the embodiment of the present invention, with embodiment one, two, three the difference is that：Institute
The rated voltage and circuit ceiling voltage for stating fuse 2 are consistent, and avoid circuit overlond running；3 volume of the three-phase transformer
Constant voltage is 1.5 times bigger than circuit ceiling voltage, ensures that the enough load capacity of three-phase transformer, the potentiometer 9 pass through three
Leading-out terminal is connected with circuit, and the size of input resistance is adjusted using brush, completes the adjusting to entire loop current.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical scheme of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (8)
1. a kind of excitation system of electromagnetic separator, it is characterised in that：It powers including electromagnetic separator and magnetic separator magnetizing coil
System, the magnetic separator magnetizing coil power supply system include power supply, fuse, three-phase transformer and voltage control system, described
Voltage control system includes contact type voltage regulator, silicon controlled module, trigger, potentiometer and rectifier bridge group；The fuse is defeated
Enter end with the power supply to be connected, the fuse output end connects the three-phase transformer, three-phase transformer pair side and institute
State contact type voltage regulator connection, the output end of the contact type voltage regulator connect with the silicon controlled module input terminal, it is described can
The output end for controlling silicon module connects the rectifier bridge group, and the rectifier bridge group output end is connected with the electromagnetic separator, described
Silicon controlled module is connect with the trigger, and the current potential shelves of the trigger connect the potentiometer.
2. the excitation system of electromagnetic separator as described in claim 1, it is characterised in that：The contact type voltage regulator is three-phase
Regulator is connected to three-phase transformer pair side, plays secondary pressure regulation.
3. the excitation system of electromagnetic separator as claimed in claim 2, it is characterised in that：The silicon controlled module includes three
Silicon-controlled module, three silicon-controlled modules are connected with the three of the contact type voltage regulator respectively, the silicon-controlled module
It is made of two one-way SCR reverse parallel connections, is used for the control of voltage waveform and frequency of delivery.
4. the excitation system of electromagnetic separator as claimed in claim 3, it is characterised in that：The rectifier bridge group is six two poles
The three phase full bridge rectification group of pipe composition, every two diodes connect into a bridge arm.
5. the excitation system of electromagnetic separator as claimed in claim 4, it is characterised in that：There are three triggerings for the trigger tool
Terminal is respectively completed three-phase triggering, and the trigger terminal is connect with the control pole of the silicon-controlled module, the public affairs of the trigger
End, primary input end and 5v terminals are corresponding with the respective terminal of the potentiometer connected altogether.
6. the excitation system of electromagnetic separator as claimed in claim 5, it is characterised in that：The triggering mode of the trigger is
Zero cross fired makes the intermittent unlatching in voltage turn-on angle and interruption.
7. the excitation system of electromagnetic separator as claimed in claim 6, it is characterised in that：The rated voltage of the fuse with
Circuit ceiling voltage is consistent.
8. the excitation system of electromagnetic separator as claimed in claim 7, it is characterised in that：The three-phase transformer rated voltage
It is 1.5 times bigger than circuit ceiling voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770134.XA CN108654832A (en) | 2018-07-13 | 2018-07-13 | Excitation system of electromagnetic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770134.XA CN108654832A (en) | 2018-07-13 | 2018-07-13 | Excitation system of electromagnetic separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108654832A true CN108654832A (en) | 2018-10-16 |
Family
ID=63774059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810770134.XA Pending CN108654832A (en) | 2018-07-13 | 2018-07-13 | Excitation system of electromagnetic separator |
Country Status (1)
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| CN (1) | CN108654832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593808A (en) * | 2021-06-23 | 2021-11-02 | 华能(浙江)能源开发有限公司玉环分公司 | Excitation circuit of iron remover and excitation voltage control method |
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| EP0013637A1 (en) * | 1979-01-04 | 1980-07-23 | Etablissements Raoul Lenoir | Electrical D.C. supply circuit with polarity inversion control and adjustable voltage for an autonomous electromagnetic hoisting device |
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| CN101811092A (en) * | 2010-04-14 | 2010-08-25 | 唐山拓新电器有限公司 | Electromagnetically-focused concentration machine |
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| CN208194657U (en) * | 2018-07-13 | 2018-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Excitation system of electromagnetic separator |
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2018
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Patent Citations (5)
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|---|---|---|---|---|
| EP0013637A1 (en) * | 1979-01-04 | 1980-07-23 | Etablissements Raoul Lenoir | Electrical D.C. supply circuit with polarity inversion control and adjustable voltage for an autonomous electromagnetic hoisting device |
| CN1595792A (en) * | 2004-06-24 | 2005-03-16 | 王旭 | Semiconductor excitation system for synchronous generator |
| CN101811092A (en) * | 2010-04-14 | 2010-08-25 | 唐山拓新电器有限公司 | Electromagnetically-focused concentration machine |
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| CN113593808A (en) * | 2021-06-23 | 2021-11-02 | 华能(浙江)能源开发有限公司玉环分公司 | Excitation circuit of iron remover and excitation voltage control method |
| CN113593808B (en) * | 2021-06-23 | 2024-01-26 | 华能(浙江)能源开发有限公司玉环分公司 | Exciting circuit of iron remover and exciting voltage control method |
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