CN106149005A - A kind of auto feed control system used for aluminium electrolysis based on ICLC - Google Patents
A kind of auto feed control system used for aluminium electrolysis based on ICLC Download PDFInfo
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- CN106149005A CN106149005A CN201610619449.5A CN201610619449A CN106149005A CN 106149005 A CN106149005 A CN 106149005A CN 201610619449 A CN201610619449 A CN 201610619449A CN 106149005 A CN106149005 A CN 106149005A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/20—Automatic control or regulation of cells
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/14—Devices for feeding or crust breaking
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Abstract
The invention discloses a kind of auto feed control system used for aluminium electrolysis based on ICLC, it is characterized in that, mainly by control chip U, transformer T, concentration sensor QW, diode D9, Zener diode D6, polar capacitor C14, low-pass filter circuit, voltage regulator circuit, the ICLC being connected with the Same Name of Ends of transformer T former limit inductance coil, and the field-effect micro-processor interface circuit composition being connected with control chip U and transformer T and voltage regulator circuit respectively.Because harmonic wave produced by interference signal eliminates or suppresses in the signal of telecommunication that concentration sensor QW can be exported by the present invention, the signal of telecommunication making concentration sensor QW export is smoother and more accurate；Effectively ensure that the accuracy to signal transacting for the present invention；And the present invention can also prevent the frequency of electric current from drift occur to being adjusted the high transient state of voltage and current, make voltage and current held stationary.
Description
Technical field
The present invention relates to field of aluminum electrolysis, specifically refer to a kind of automatically add based on the used for aluminium electrolysis of ICLC
Material control system.
Background technology
Aluminum electrolysis uses molten-salt electrolysis technique, makees equipment with aluminium cell, and electrolysis raw material made by aluminum oxide, with ice
Spar electrolyte dissolution aluminum oxide generates metallic aluminium through electrochemical reaction.Dissolve aluminum oxide in the electrolyte in electrolytic process
Constantly consume, aluminium cell has several alumina reservoir and several alumina feeding device.Present alumina feeding device
All using volumetric feeder to realize, the duty of volumetric feeder is then by oxidation by Loading Control System
The collection result of aluminum concentration signal controls.The production target of aluminium electroloysis is or excellent, depends primarily on alumina concentration control
Whether accurate.
But, existing aluminum oxide auto feed control system used for aluminium electrolysis is easily subject to interference, and occurs to signal
Manage inaccurate problem, cause volumetric feeder in aluminium electrolysis process accurately not feed to electrolytic cell, cause aluminum oxide
Concentration occurs that fluctuation aluminium electroloysis is unable to reach excellent production target；And existing aluminum oxide auto feed used for aluminium electrolysis controls
System there is also the unstable problem of output voltage.
Therefore it provides signal can accurately be processed by one, can ensure that again the oxygen used for aluminium electrolysis of output voltage stabilization
Changing aluminium auto feed control system is the task of top priority.
Content of the invention
It is an object of the invention to overcome aluminum oxide auto feed control system used for aluminium electrolysis of the prior art to signal
Process inaccurate, and the defect that output voltage is unstable, provide a kind of based on ICLC used for aluminium electrolysis from
Dynamic Loading Control System.
The purpose of the present invention is realized by following technical scheme: a kind of based on ICLC used for aluminium electrolysis automatically
Loading Control System, mainly by control chip U, transformer T, concentration sensor QW, of the same name with transformer T former limit inductance coil
The ICLC that is connected of end, N pole is connected with ICLC, P pole after resistance R15 with control core
The N pole of the diode D9 that the CC pin of piece U is connected, diode D9 and P pole VS pin with control chip U after resistance R14
Be connected, Zener diode D6 that N pole is connected with the COM pin of control chip U, positive pole and transformer T secondary inductance coil
Non-same polarity be connected, negative pole be connected with the Same Name of Ends of transformer T secondary inductance coil after ground connection polar capacitor C14,
It is serially connected in the low-pass filter circuit between concentration sensor QW and the IN pin of control chip U, manage with the CF of control chip U respectively
The voltage regulator circuit that pin is connected with CM pin and PWM pin, and respectively with control chip U and transformer T and electricity
The field-effect micro-processor interface circuit composition that voltage regulator circuit is connected；The GND pin ground connection of described control chip U；Described transformer T
The Same Name of Ends of secondary inductance coil and non-same polarity are collectively forming the output of this control system.
Described ICLC is by FET MOS2, triode VT6, triode VT7, triode VT8, N pole
Be connected with the emitter stage of triode VT6, diode that P pole is connected with the source electrode of FET MOS2 after resistance R24
The diode D13 that D11, P pole is connected with the source electrode of FET MOS2, N pole is connected with the drain electrode of FET MOS2, just
The polar capacitor that pole is connected with the base stage of triode VT6, negative pole is connected with the source electrode of FET MOS2 after resistance R25
C16, positive pole is connected with the colelctor electrode of triode VT6 after resistance R22, negative pole current collection with triode VT7 after resistance R23
The polar capacitor C15 that pole is connected, P pole is connected with the colelctor electrode of triode VT7, N pole after resistance R28 with triode VT8
The diode D12 that is connected of base stage, one end is connected with the base stage of triode VT7, the N pole phase of the other end and diode D12
Connect adjustable resistance R26, negative pole is connected with the grid of FET MOS2, positive pole after resistance R27 with diode D12's
The polar capacitor C17 that N pole is connected, P pole is connected with the grid of FET MOS2 after resistance R29, N pole and triode
The diode D14 that the colelctor electrode of VT8 is connected, and positive pole is connected with the grid of FET MOS2 after resistance R30, negative
The polar capacitor C18 composition that pole is connected with the emitter stage of triode VT8 after resistance R31；The emitter stage of described triode VT7
Be connected with the negative pole of polar capacitor C16, its grounded collector；The minus earth of described polar capacitor C15；Described triode
The grounded collector of VT8；The N pole of described diode D11 is connected with the N pole of diode D9；The leakage of described FET MOS2
Pole is connected with the Same Name of Ends of transformer T former limit inductance coil.
Described low-pass filter circuit is connected with the positive pole of amplifier P after resistance R4 by amplifier P, triode VT1, positive pole
Connect, polar capacitor C2 that negative pole is connected with concentration sensor QW, positive pole is connected with the positive pole of polar capacitor C2 after resistance R5
Connect, the polar capacitor C3 of minus earth, P pole is connected with the negative pole of amplifier P after resistance R6, N pole after resistance R8 with put
The diode D2 that the output of big device P is connected, negative pole is grounded after being connected with the negative pole of amplifier P, positive pole is through adjustable resistance
The polar capacitor C4 being connected with the N pole of diode D2 after R7, one end is connected with the N pole of diode D2, the other end and three poles
The inductance L1 that the emitter stage of pipe VT1 is connected, negative pole is connected with the base stage of triode VT1, the output of positive pole and amplifier P
The polar capacitor C5 being connected, positive pole is connected with the output of amplifier P, negative pole is connected with the colelctor electrode of triode VT1
Polar capacitor C6, P pole is connected with the output of amplifier P after resistance R2, N pole is connected with the colelctor electrode of triode VT1
The diode D3 connecing, positive pole is connected with the output of amplifier P after resistance R1, the polar capacitor C1 of minus earth, and N
The diode D1 composition that pole is connected with the positive pole of amplifier P, P pole is connected with the output of amplifier P after resistance R3；Institute
The IN pin of the colelctor electrode and control chip U of stating triode VT1 is connected.
Described voltage regulator circuit is by triode VT2, and triode VT3, P pole is connected with the CF pin of control chip U, N
The diode D4 that pole is connected with the emitter stage of triode VT2 after resistance R9, positive pole is connected with the CM pin of control chip U
Connect, polar capacitor C8 that negative pole is connected with the base stage of triode VT2, positive pole is connected with the colelctor electrode of triode VT2, negative pole
The polar capacitor C7 of ground connection, P pole is connected with the base stage of triode VT2, N pole negative pole with polar capacitor C7 after resistance R10
The diode D5 being connected, positive pole is connected with the base stage of triode VT3, negative pole base stage with triode VT2 after resistance R11
The polar capacitor C9 being connected, one end is connected with the N pole of diode D5, the other end is connected with the colelctor electrode of triode VT3
Adjustable resistance R13, and with adjustable resistance R13 phase and connect resistance R12 composition；The emitter stage of described triode VT3 and control
The PWM pin of coremaking piece U is connected, its colelctor electrode is also connected with field-effect micro-processor interface circuit.
Described field-effect micro-processor interface circuit is by FET MOS1, triode VT4, triode VT5, positive pole and control chip
Polar capacitor C12, positive pole and the FET that the OUT pin of U is connected, negative pole is connected with the grid of FET MOS1
The polar capacitor C10 that the drain electrode of MOS1 is connected, negative pole is connected with the colelctor electrode of triode VT3, P pole is with triode VT4's
The drain electrode of the diode D8 that colelctor electrode is connected, N pole is connected with the negative pole of polar capacitor C10, one end and FET MOS1
Be connected, adjustable resistance R19 that the other end is connected with the base stage of triode VT4, positive pole is connected with the colelctor electrode of triode VT5
Connect, polar capacitor C11 that negative pole is connected with the N pole of diode D8 after resistance R21, P pole after inductance L2 with diode D8
N pole is connected, N pole is connected with the colelctor electrode of triode VT5 after resistance R18 diode D10, one end and triode
The resistance R17 that the emitter stage of VT4 is connected, the other end is connected with the colelctor electrode of triode VT5, positive pole is with triode VT5's
The polar capacitor C13 that emitter stage is connected, negative pole is connected with the non-same polarity of transformer T former limit inductance coil, and N pole with
The diode D7 composition that the base stage of triode VT5 is connected, P pole is connected with the COM pin of control chip U after resistance R16；
The drain electrode of described FET MOS1 is also connected with the PWM pin of control chip U, its source electrode then P pole phase with diode D7
Connect；The N pole ground connection of described diode D8.
In order to reach more preferable using effect, the described control chip U then integrated chip of the excellent AD736 of have employed realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) because harmonic wave produced by interference signal eliminates in the signal of telecommunication that concentration sensor QW can be exported by the present invention
Or suppression, the signal of telecommunication making concentration sensor QW export is smoother and more accurate；Effectively ensure that the present invention to signal transacting
Accuracy；And the present invention can also prevent the frequency of electric current from drift occur to being adjusted the high transient state of voltage and current
Move, make voltage and current held stationary, ensure that the present invention can export burning voltage, effectively ensure that aluminium electrolysis process
Middle volumetric feeder, to the accuracy of charging of the cell, makes aluminium electroloysis reach excellent production target.
(2) present invention can to input power when powering up produced high surge current suppress, effectively by surge
Within the scope of electric current is reduced to allow, ensure that the stability of output voltage of the present invention.
(3) the control chip U of the present invention then preferentially have employed the integrated chip of AD736 and realizes, by this chip with outside
Circuit combines, and can effectively guarantee the accuracy to signal transacting for the present invention, enables the invention to effectively automatically control entirely
Charging process；And also improve the stability of output voltage of the present invention.
Brief description
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the ICLC of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U, transformer T, concentration sensor QW and transformer T former limit inductance
The ICLC that the Same Name of Ends of coil is connected, N pole is connected with ICLC, P pole is through resistance R15
The diode D9 being connected with the CC pin of control chip U afterwards, P pole VS pin with control chip U after resistance R14 is connected
Connect, Zener diode D6 that N pole is connected with the COM pin of control chip U, positive pole is non-with transformer T secondary inductance coil
The polar capacitor C14 of ground connection after Same Name of Ends is connected, negative pole is connected with the Same Name of Ends of transformer T secondary inductance coil, concatenation
Low-pass filter circuit between the IN pin of concentration sensor QW and control chip U, respectively with the CF pin of control chip U and
The voltage regulator circuit that CM pin and PWM pin are connected, and adjust with control chip U and transformer T and voltage respectively
The field-effect micro-processor interface circuit composition that economize on electricity road is connected.
The GND pin ground connection of described control chip U；The Same Name of Ends of described transformer T secondary inductance coil and non-same polarity
Being collectively forming the output of this control system, during enforcement, this output is then connected with volumetric feeder.In order to reach more preferable
Using effect, the described control chip U then integrated chip of the excellent AD736 of have employed realizes, the VS pin of this chip then with outside
Power supply is connected.Meanwhile, described concentration sensor QW then preferentially have employed ZJ2001A strength of fluid sensor and realizes, should
Concentration sensor QW is used for gathering alumina concentration value in electrolytic process.
Further, described low-pass filter circuit is by amplifier P, triode VT1, resistance R1, resistance R2, resistance R3, electricity
Resistance R4, resistance R5, resistance R6, adjustable resistance R7, resistance R8, polar capacitor C1, polar capacitor C2, polar capacitor C3, polarity electricity
Hold C4, polar capacitor C5, polar capacitor C6, diode D1, diode D2, diode D3, and inductance L1 composition.
During connection, the positive pole of polar capacitor C2 is connected with the positive pole of amplifier P after resistance R4, and negative pole senses with concentration
Device QW is connected.The positive pole of polar capacitor C3 is connected with the positive pole of polar capacitor C2 after resistance R5, minus earth.Diode
The P pole of D2 is connected with the negative pole of amplifier P after resistance R6, and N pole is connected with the output of amplifier P after resistance R8.
Wherein, after the negative pole of polar capacitor C4 is connected with the negative pole of amplifier P be grounded, positive pole after adjustable resistance R7 with
The N pole of diode D2 is connected.One end of inductance L1 is connected with the N pole of diode D2, the transmitting of the other end and triode VT1
Pole is connected.The negative pole of polar capacitor C5 is connected with the base stage of triode VT1, and positive pole is connected with the output of amplifier P.
The positive pole of polar capacitor C6 is connected with the output of amplifier P, and negative pole is connected with the colelctor electrode of triode VT1.
Meanwhile, the P pole of diode D3 is connected with the output of amplifier P after resistance R2, and N pole is with triode VT1's
Colelctor electrode is connected.The positive pole of polar capacitor C1 is connected with the output of amplifier P after resistance R1, minus earth.Two poles
The N pole of pipe D1 is connected with the positive pole of amplifier P, and P pole is connected with the output of amplifier P after resistance R3.Described three poles
The colelctor electrode of pipe VT1 is connected with the IN pin of control chip U.
Further, described voltage regulator circuit is by triode VT2, triode VT3, resistance R9, resistance R10, resistance
R11, resistance R12, adjustable resistance R13, polar capacitor C7, polar capacitor C8, polar capacitor C9, diode D4, and diode
D5 forms.
During connection, the P pole of diode D4 is connected with the CF pin of control chip U, N pole after resistance R9 with triode
The emitter stage of VT2 is connected.The positive pole of polar capacitor C8 is connected with the CM pin of control chip U, and negative pole is with triode VT2's
Base stage is connected.The positive pole of polar capacitor C7 is connected with the colelctor electrode of triode VT2, minus earth.
Meanwhile, the P pole of diode D5 is connected with the base stage of triode VT2, N pole after resistance R10 with polar capacitor C7
Negative pole be connected.The pole of polar capacitor C9 is connected with the base stage of triode VT3, negative pole after resistance R11 with triode VT2
Base stage be connected.One end of adjustable resistance R13 is connected with the N pole of diode D5, the colelctor electrode of the other end and triode VT3
Being connected, resistance R12 and adjustable resistance R13 phase simultaneously connect.The emitter stage of described triode VT3 and the PWM pin of control chip U
Being connected, its colelctor electrode is also connected with field-effect micro-processor interface circuit.
Yet further, described field-effect micro-processor interface circuit is by FET MOS1, triode VT4, triode VT5, electricity
Resistance R16, resistance R17, resistance R18, resistance R19, adjustable resistance R20, resistance R21, polar capacitor C10, polar capacitor C11, pole
Property electric capacity C12, polar capacitor C13, diode D7, diode D8, diode D10, and inductance L2 composition.
During connection, the positive pole of polar capacitor C12 is connected with the OUT pin of control chip U, negative pole and FET MOS1
Grid be connected.The positive pole of polar capacitor C10 is connected with the drain electrode of FET MOS1, the collection of negative pole and triode VT3
Electrode is connected.The P pole of diode D8 is connected with the colelctor electrode of triode VT4, and N pole is connected with the negative pole of polar capacitor C10
Connect.
Wherein, one end of adjustable resistance R19 is connected with the drain electrode of FET MOS1, and the other end is with triode VT4's
Base stage is connected.The positive pole of polar capacitor C11 is connected with the colelctor electrode of triode VT5, negative pole after resistance R21 with diode
The N pole of D8 is connected.N pole with diode D8 after inductance L2, the P pole of diode D10 is connected, N pole after resistance R18 with
The colelctor electrode of triode VT5 is connected.One end of resistance R17 is connected with the emitter stage of triode VT4, the other end and triode
The colelctor electrode of VT5 is connected.
Meanwhile, the positive pole of polar capacitor C13 is connected with the emitter stage of triode VT5, negative pole and transformer T former limit inductance
The non-same polarity of coil is connected.The N pole of diode D7 is connected with the base stage of triode VT5, P pole after resistance R16 with control
The COM pin of coremaking piece U is connected.The drain electrode of described FET MOS1 is also connected with the PWM pin of control chip U, its
Source electrode is then connected with the P pole of diode D7；The N pole ground connection of described diode D8.
As in figure 2 it is shown, described ICLC is by FET MOS2, triode VT6, triode VT7, three poles
Pipe VT8, resistance R22, resistance R23, resistance R24, resistance R25, adjustable resistance R26, resistance R27, resistance R28, resistance R29, electricity
Resistance R30, resistance R31, polar capacitor C15, polar capacitor C16, polar capacitor C17, polar capacitor C18, diode D11, two poles
Pipe D12, diode D13, and diode D14 form.
During connection, the N pole of diode D11 is connected with the emitter stage of triode VT6, P pole after resistance R24 with field-effect
The source electrode of pipe MOS2 is connected.The P pole of diode D13 is connected with the source electrode of FET MOS2, N pole and FET MOS2
Drain electrode be connected.The positive pole of polar capacitor C16 is connected with the base stage of triode VT6, negative pole after resistance R25 with field-effect
The source electrode of pipe MOS2 is connected.
Wherein, the positive pole of polar capacitor C15 is connected with the colelctor electrode of triode VT6 after resistance R22, and negative pole is through resistance
It is connected with the colelctor electrode of triode VT7 after R23.The P pole of diode D12 is connected with the colelctor electrode of triode VT7, N pole warp
It is connected with the base stage of triode VT8 after resistance R28.One end of adjustable resistance R26 is connected with the base stage of triode VT7, separately
One end is connected with the N pole of diode D12.The negative pole of polar capacitor C17 is connected with the grid of FET MOS2, positive pole warp
After resistance R27, the N pole with diode D12 is connected.
Meanwhile, the P pole of diode D14 is connected with the grid of FET MOS2 after resistance R29, N pole and triode
The colelctor electrode of VT8 is connected.The positive pole of polar capacitor C18 is connected with the grid of FET MOS2 after resistance R30, negative pole
It is connected with the emitter stage of triode VT8 after resistance R31.
The emitter stage of described triode VT7 is connected with the negative pole of polar capacitor C16, its grounded collector；Described polarity
The minus earth of electric capacity C15；The grounded collector of described triode VT8；The N pole of described diode D11 and the N pole of diode D9
It is connected；The drain electrode of described FET MOS2 is connected with the Same Name of Ends of transformer T former limit inductance coil.
During work, control chip U must electrically activate and receive the alumina concentration letter detected by strength of fluid sensor QW
Number, send corresponding trigger according to alumina concentration signal simultaneously.When alumina concentration is identical with benchmark concentration, control
Chip U sends low level, and FET MOS1 is not turned on, and volumetric feeder dead electricity quits work.As strength of fluid sensor QW
When the alumina concentration signal that gathered is low, control chip U sends high level, and FET MOS1 turns on, and volumetric feeder obtains
Electricity is started working, i.e. volumetric feeder is interpolation aluminum oxide in electrolytic cell, adds alumina concentration and benchmark concentration in making solution groove
Keep consistent.
The present invention can by the signal of telecommunication of concentration sensor QW output because harmonic wave produced by interference signal carries out eliminating or
Suppression, the signal of telecommunication making concentration sensor QW export is smoother and more accurate；Effectively ensure that the present invention to signal transacting
Accuracy；And the present invention can also prevent the frequency of electric current from drift occur to being adjusted the high transient state of voltage and current,
Make voltage and current held stationary, ensure that the present invention can export burning voltage, effectively ensure that in aluminium electrolysis process
Volumetric feeder, to the accuracy of charging of the cell, makes aluminium electroloysis reach excellent production target.
Meanwhile, the present invention can to input power when powering up produced high surge current suppress, effectively by wave
Gush electric current be reduced to allow within the scope of, ensure that the stability of output voltage of the present invention.The control chip U of the present invention
Then preferentially have employed the integrated chip of AD736 to realize, combined with external circuit by this chip, can effectively guarantee the present invention
Accuracy to signal transacting, enables the invention to effectively automatically control whole charging process；And also it is defeated to improve the present invention
Go out the stability of voltage.
As described above, just can well realize the present invention.
Claims (6)
1. the auto feed control system used for aluminium electrolysis based on ICLC, it is characterised in that mainly by controlling
The surge current limit that the Same Name of Ends of coremaking piece U, transformer T, concentration sensor QW, with transformer T former limit inductance coil is connected
Circuit processed, N pole is connected with ICLC, P pole is connected with the CC pin of control chip U after resistance R15
The N pole of diode D9, diode D9 with P pole the VS pin with control chip U after resistance R14 be connected, N pole and control chip
The Zener diode D6 that the COM pin of U is connected, positive pole is connected with the non-same polarity of transformer T secondary inductance coil, negative pole
After being connected with the Same Name of Ends of transformer T secondary inductance coil, the polar capacitor C14 of ground connection, is serially connected in concentration sensor QW and control
Low-pass filter circuit between the IN pin of coremaking piece U, respectively with the CF pin of control chip U and CM pin and PWM pin
The voltage regulator circuit being connected, and the field effect being connected with control chip U and transformer T and voltage regulator circuit respectively
Micro-processor interface circuit is answered to form；The GND pin ground connection of described control chip U；The Same Name of Ends of described transformer T secondary inductance coil with
Non-same polarity is collectively forming the output of this control system.
2. a kind of auto feed control system used for aluminium electrolysis based on ICLC according to claim 1,
It is characterized in that, described ICLC is by FET MOS2, triode VT6, triode VT7, triode VT8, N
The diode that pole is connected with the emitter stage of triode VT6, P pole is connected with the source electrode of FET MOS2 after resistance R24
The diode D13 that D11, P pole is connected with the source electrode of FET MOS2, N pole is connected with the drain electrode of FET MOS2, just
The polar capacitor that pole is connected with the base stage of triode VT6, negative pole is connected with the source electrode of FET MOS2 after resistance R25
C16, positive pole is connected with the colelctor electrode of triode VT6 after resistance R22, negative pole current collection with triode VT7 after resistance R23
The polar capacitor C15 that pole is connected, P pole is connected with the colelctor electrode of triode VT7, N pole after resistance R28 with triode VT8
The diode D12 that is connected of base stage, one end is connected with the base stage of triode VT7, the N pole phase of the other end and diode D12
Connect adjustable resistance R26, negative pole is connected with the grid of FET MOS2, positive pole after resistance R27 with diode D12's
The polar capacitor C17 that N pole is connected, P pole is connected with the grid of FET MOS2 after resistance R29, N pole and triode
The diode D14 that the colelctor electrode of VT8 is connected, and positive pole is connected with the grid of FET MOS2 after resistance R30, negative
The polar capacitor C18 composition that pole is connected with the emitter stage of triode VT8 after resistance R31；The emitter stage of described triode VT7
Be connected with the negative pole of polar capacitor C16, its grounded collector；The minus earth of described polar capacitor C15；Described triode
The grounded collector of VT8；The N pole of described diode D11 is connected with the N pole of diode D9；The leakage of described FET MOS2
Pole is connected with the Same Name of Ends of transformer T former limit inductance coil.
3. a kind of auto feed control system used for aluminium electrolysis based on ICLC according to claim 2,
It is characterized in that, described low-pass filter circuit is by amplifier P, triode VT1, positive pole positive pole with amplifier P after resistance R4
Be connected, polar capacitor C2 that negative pole is connected with concentration sensor QW, positive pole positive pole with polar capacitor C2 after resistance R5
Be connected, the polar capacitor C3 of minus earth, P pole is connected with the negative pole of amplifier P after resistance R6, N pole is after resistance R8
The diode D2 being connected with the output of amplifier P, negative pole be connected with the negative pole of amplifier P after ground connection, positive pole through adjustable
The polar capacitor C4 being connected with the N pole of diode D2 after resistance R7, one end is connected with the N pole of diode D2, the other end with
The inductance L1 that the emitter stage of triode VT1 is connected, negative pole is connected with the base stage of triode VT1, positive pole is defeated with amplifier P's
Going out the polar capacitor C5 that is connected of end, positive pole is connected with the output of amplifier P, the colelctor electrode phase of negative pole and triode VT1
The polar capacitor C6 connecting, P pole is connected with the output of amplifier P after resistance R2, the colelctor electrode of N pole and triode VT1
The diode D3 being connected, positive pole is connected with the output of amplifier P after resistance R1, the polar capacitor C1 of minus earth,
And the diode D1 group that N pole is connected with the positive pole of amplifier P, P pole is connected with the output of amplifier P after resistance R3
Become；The colelctor electrode of described triode VT1 is connected with the IN pin of control chip U.
4. a kind of auto feed control system used for aluminium electrolysis based on ICLC according to claim 3,
It is characterized in that, described voltage regulator circuit is connected with the CF pin of control chip U by triode VT2, triode VT3, P pole
Connect, diode D4 that N pole is connected with the emitter stage of triode VT2 after resistance R9, the CM pin phase of positive pole and control chip U
The polar capacitor C8 that connection, negative pole are connected with the base stage of triode VT2, positive pole is connected with the colelctor electrode of triode VT2, bears
Pole ground connection polar capacitor C7, P pole is connected with the base stage of triode VT2, N pole after resistance R10 with polar capacitor C7 bear
The diode D5 that pole is connected, positive pole is connected with the base stage of triode VT3, negative pole base with triode VT2 after resistance R11
The polar capacitor C9 that pole is connected, one end is connected with the N pole of diode D5, the other end is connected with the colelctor electrode of triode VT3
The adjustable resistance R13 connecing, and form with adjustable resistance R13 phase the resistance R12 connecting；The emitter stage of described triode VT3 with
The PWM pin of control chip U is connected, its colelctor electrode is also connected with field-effect micro-processor interface circuit.
5. a kind of auto feed control system used for aluminium electrolysis based on ICLC according to claim 4,
It is characterized in that, described field-effect micro-processor interface circuit is by FET MOS1, triode VT4, triode VT5, positive pole and control
Polar capacitor C12, positive pole and the field-effect that the OUT pin of chip U is connected, negative pole is connected with the grid of FET MOS1
The polar capacitor C10 that the drain electrode of pipe MOS1 is connected, negative pole is connected with the colelctor electrode of triode VT3, P pole and triode VT4
The diode D8 that colelctor electrode is connected, N pole is connected with the negative pole of polar capacitor C10, the leakage of one end and FET MOS1
The adjustable resistance R19 that pole is connected, the other end is connected with the base stage of triode VT4, the colelctor electrode phase of positive pole and triode VT5
Connect, the polar capacitor C11 that is connected with the N pole of diode D8 after resistance R21 of negative pole, P pole after inductance L2 with diode
Diode D10, one end and the triode that the N pole of D8 is connected, N pole is connected with the colelctor electrode of triode VT5 after resistance R18
The resistance R17 that the emitter stage of VT4 is connected, the other end is connected with the colelctor electrode of triode VT5, positive pole is with triode VT5's
The polar capacitor C13 that emitter stage is connected, negative pole is connected with the non-same polarity of transformer T former limit inductance coil, and N pole with
The diode D7 composition that the base stage of triode VT5 is connected, P pole is connected with the COM pin of control chip U after resistance R16；
The drain electrode of described FET MOS1 is also connected with the PWM pin of control chip U, its source electrode then P pole phase with diode D7
Connect；The N pole ground connection of described diode D8.
6. a kind of auto feed control system used for aluminium electrolysis based on ICLC according to claim 5,
It is characterized in that, described control chip U is the integrated chip of AD736.
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| CN201610619449.5A CN106149005A (en) | 2016-07-29 | 2016-07-29 | A kind of auto feed control system used for aluminium electrolysis based on ICLC |
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| CN201610619449.5A CN106149005A (en) | 2016-07-29 | 2016-07-29 | A kind of auto feed control system used for aluminium electrolysis based on ICLC |
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Citations (3)
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|---|---|---|---|---|
| JPS57174483A (en) * | 1981-04-17 | 1982-10-27 | Sumitomo Light Metal Ind Ltd | Method and device for continuous measurement of current efficiency of aluminum electrolyzing cell |
| CN105274573A (en) * | 2015-10-30 | 2016-01-27 | 四川华索自动化信息工程有限公司 | Automatic alumina feeding system for aluminium electrolysis |
| CN105274574A (en) * | 2015-10-30 | 2016-01-27 | 四川华索自动化信息工程有限公司 | Aluminum electrolysis automatic aluminum oxide feeding system based on two-stage symmetric filtering circuit |
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2016
- 2016-07-29 CN CN201610619449.5A patent/CN106149005A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57174483A (en) * | 1981-04-17 | 1982-10-27 | Sumitomo Light Metal Ind Ltd | Method and device for continuous measurement of current efficiency of aluminum electrolyzing cell |
| CN105274573A (en) * | 2015-10-30 | 2016-01-27 | 四川华索自动化信息工程有限公司 | Automatic alumina feeding system for aluminium electrolysis |
| CN105274574A (en) * | 2015-10-30 | 2016-01-27 | 四川华索自动化信息工程有限公司 | Aluminum electrolysis automatic aluminum oxide feeding system based on two-stage symmetric filtering circuit |
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| Title |
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| 吴运昌: "《模拟集成电路原理与应用》", 30 June 1995, 广州：华南理工大学出版社 * |
| 黄欣平: "《列车无线调度通信》", 31 October 2011, 北京：中国铁道出版社 * |
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Application publication date: 20161123 |