CN203174210U - Integrated detector of aluminum electrolysis cell - Google Patents
Integrated detector of aluminum electrolysis cell Download PDFInfo
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- CN203174210U CN203174210U CN 201320157539 CN201320157539U CN203174210U CN 203174210 U CN203174210 U CN 203174210U CN 201320157539 CN201320157539 CN 201320157539 CN 201320157539 U CN201320157539 U CN 201320157539U CN 203174210 U CN203174210 U CN 203174210U
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Abstract
The utility model discloses an integrated detector of an aluminum electrolysis cell. The integrated detector of the aluminum electrolysis cell mainly comprises a thermocouple temperature detection circuit, an AD (analogue-digital) detection circuit, an SD (secure digital) card memory circuit, a motor control circuit and a limiting switch circuit which are connected with a microcontroller; the motor control circuit is connected with a stepper motor; the stepper motor is connected with a stainless steel guide rod through a screw; a detection point at one end of the stainless steel guide rod is connected into the electrolysis cell; and the other end of the stainless steel guide rod is connected with a cathode bus of the electrolysis cell to be used as a reference point. The integrated detector of the aluminum electrolysis cell not only can be used for measuring the operating parameters such as electrolyte temperature, two levels, electrolyte pressure drop, bottom pressure drop and bottom participation thickness of the electrolysis cell, but also can be used for multi-parameter measurement just by once operation, is high in measurement accuracy, and also can achieve the purposes of implementing data transferring and leading-in of background software, analyzing the operating parameters of the electrolysis cell and comprehensively analyzing the operating condition of the electrolysis cell.
Description
Technical field
The utility model relates to field of aluminum electrolysis, particularly to the measuring apparatus of running state parameters such as the electrolyte temperature of aluminium cell, two levels, bottom land precipitation, bottom land pressure drop.
Background technology
In the process of electrolysis of aluminum, in order to grasp the operation conditions of electrolyzer, need measure the technical parameter of the relevant operation of electrolyzer, man of current electrolysis aluminium manufacturer comprises two levels (aluminium level and electrolyte level), electrolyte temperature, bottom land pressure drop etc. to the content of electrolyzer routine measurement, and ionogen pressure drop and bottom land are deposited in the routine measurement and can't measure.In the measuring process of routine, different measurement contents, need to adopt different survey instruments, generally, metering system is original, the accuracy of take off data is subjected to the limitation influence of too many human factor and measuring method, and therefore the result who measures has spent the work that a large amount of people carries out repeatability often, and measuring error is bigger.Along with the development of modern science and technology, the especially development of computer software and hardware, can realize fully measuring process automatization, take off data is accurately quick, for the electrolytic aluminium factory fine-grained management provides technical guarantee.
The utility model content
Technical problem to be solved in the utility model needs survey instrument many at operating parameters such as existing aluminum cell electrolyte temperature, two levels, bottom land pressure drops exactly, and measuring accuracy difference and bottom land precipitation are difficult to problems of measurement design with the ionogen pressure drop
The aluminium cell comprehensive detectorThis detector single job, not only can measure at the bottom of electrolyte temperature, two levels, ionogen pressure drop, bottom land pressure drop, the electrolytic bath operating parameters such as precipitation thickness, and can measuring multiple parameters, the measuring accuracy height, can also realize the importing of data conversion storage and daemon software, analyze the electrolyzer operating parameter, the operation conditions of multianalysis electrolyzer.
Technical solution adopted in the utility model is:
A kind of aluminium cell comprehensive detector mainly is made up of the electric thermo-couple temperature testing circuit that links to each other with microcontroller, AD testing circuit, SD card memory circuit, circuit for controlling motor and limit switch circuit; Circuit for controlling motor is connected with stepper-motor, and stepper-motor is connected with the stainless steel guide rod by leading screw, and stainless steel guide rod one end check point inserts in the electrolyzer, and the other end is connected conduct with reference to point with the electric tank cathode bus.Microcontroller rotates by control step motor motor, by leading screw stainless steel one end check point is sent in the electrolyzer, and the other end removes electric tank cathode bus point for referencial use, gathers the electrolyzer pressure drop by the stepper-motor motion.
The AD testing circuit comprises that bath voltage detection and stainless steel and vertical angle detect, it is spacing to cooperate stepper-motor motion and limit switch to touch bottom land, calculate stainless steel check point and bottom of electrolytic tank vertical line distance, simultaneously since dielectric substrate and aluminium liquid layer and dielectric substrate and aluminium flowing-out mouth place voltage exist obvious must saltus step, so can measure simultaneously aluminium level, electrolyte level and electrolyzer from bottom land to aluminium flowing-out mouth voltage change situation;
By thermopair is fixed on the stainless steel guide rod, enters and detect electrolytic tank electrolysis matter temperature in the dielectric substrate in addition.
Be stainless steel guide rod shift position, bath voltage pressure drop, two levels and the electrolyte temperature etc. of showing in real time directly perceived, microprocessor also is connected with liquid crystal display circuit.
The electric thermo-couple temperature testing circuit adopts MAX6675 special electric thermo-couple temperature acquisition chip, and chip carries cold junction compensation, need not the artificial compensation that adds, and has reduced measuring error, has reduced cost.
Microprocessor adopts STM32F103ZET high speed microprocessor, economical and efficient
SD card memory circuit is with SPI signalling methods storing data information.
Measuring principle is described: 1, bath voltage detects, stainless steel guide rod N one terminal voltage check point A is probeed in the electrolyzer, the other end check point B is connected to the electric tank cathode bus as the reference point, detect pressure drop between the two, in addition by mobile check point A, thus detect electrolyzer from bottom land to aluminium flowing-out mouth voltage change graphic representation; 2, two horizontal checkouts, bottom land pressure drop and ionogen pressure drop, bath voltage is found in detecting, voltage existed obvious saltus step after voltage detecting point A left the aluminium liquid layer and enters dielectric substrate and leave aluminium flowing-out mouth, control stainless steel guide rod N miles of relative movement according to this principle by stepper-motor M, two horizontal datas can be measured, bottom land pressure drop and ionogen pressure drop information can be obtained simultaneously; 3, precipitation detects at the bottom of the electrolytic bath, precipitation can be divided into two kinds of hard-caked sediment and soft precipitations at the bottom of the electrolytic bath, if what stainless steel guide rod N check point touched is soft precipitation, stainless steel guide rod N check point A can enter into precipitation inside so, be an equation body according to precipitation surface and aluminium liquid layer so, the soft precipitation top layer should be consistent with the aluminium fluid pressure drop, therefore touching soft precipitation can make the electrolyzer pressure drop descend, if instead what touch is hard-caked sediment, because the contact drop that hard-caked sediment causes can make the electrolyzer pressure drop raise on the contrary.
The beneficial effect that the utility model can enough reach is:
1, the utility model can detect two levels and electrolyte temperature, ionogen pressure drop automatically, reduces cost of labor, has alleviated labour intensity, enhances productivity;
2, the utility model can detect the bath voltage changing conditions, provides the data basis for adjusting electrolyzer.
3, the utility model can detect electrolyzer precipitation size and type of precipitation, helps to repair electrolyzer.
4, the utility model once can measuring multiple parameters, the measuring accuracy height, and can realize the importing of data conversion storage and daemon software, analyze the electrolyzer operating parameter, and then the operation conditions of multianalysis electrolyzer.
Description of drawings
Fig. 1 is logic block-diagram of the present utility model.
Fig. 2 is schematic circuit diagram of the present utility model.
Embodiment:
The utility model will be further described below in conjunction with accompanying drawing:
As Fig. 1, shown in Figure 2: this aluminium cell comprehensive detector is by power source circuit 1, watchdog reset circuit 2, JTAG program download circuit 3, battery electric quantity testing circuit 4, circuit for controlling motor 5, keystroke interface circuit 6, AD testing circuit 7, microprocessor 8, SD card memory circuit 9, limit switch circuit 10, electric thermo-couple temperature testing circuit 11 and liquid crystal display circuit 12 are formed, circuit for controlling motor 5 is connected with stepper-motor M, stepper-motor M is connected with stainless steel guide rod N by leading screw, stainless steel guide rod N one end check point inserts in the electrolyzer, and the other end is connected conduct with reference to point with the electric tank cathode bus.Microcontroller 8 rotates by control step motor motor, by leading screw stainless steel N one end check point A is sent in the electrolyzer, and the other end check point B connects electric tank cathode bus point for referencial use, gathers the electrolyzer pressure drop by stepper-motor M motion.Wherein AD testing circuit 7 comprises that bath voltage detection and stainless steel and vertical angle detect, it is spacing to cooperate stepper-motor M motion and limit switch to touch bottom land, calculate stainless steel guide rod N check point and bottom of electrolytic tank vertical line distance, simultaneously since dielectric substrate and aluminium liquid layer and dielectric substrate and aluminium flowing-out mouth place voltage exist obvious must saltus step, so can measure simultaneously aluminium level, electrolyte level and electrolyzer from bottom land to aluminium flowing-out mouth voltage change situation; Detect electrolytic tank electrolysis matter temperature in the dielectric substrate by thermopair being fixed on the stainless steel guide rod N, entering in addition; Be stainless steel guide rod shift position, bath voltage pressure drop, two levels and the electrolyte temperature etc. of showing in real time directly perceived, microprocessor 8 also is connected with liquid crystal display circuit 12; Electric thermo-couple temperature testing circuit 11 adopts MAX6675 special electric thermo-couple temperature acquisition chip, and chip carries cold junction compensation, need not the artificial compensation that adds, and has reduced measuring error, has reduced cost; Microprocessor 8 adopts the STM32F103ZET high speed microprocessor, and economical and efficient SD card memory circuit 9 is with SPI signalling methods storing data information.Measuring principle is: 1, bath voltage detects, stainless steel guide rod M one terminal voltage check point A is probeed in the electrolyzer, the other end check point B is connected to the electric tank cathode bus as the reference point, detect pressure drop between the two, in addition by mobile check point A, thus detect electrolyzer from bottom land to aluminium flowing-out mouth voltage change graphic representation; 2, two horizontal checkouts, bottom land pressure drop and ionogen pressure drop, bath voltage is found in detecting, voltage existed obvious saltus step after voltage detecting point A left the aluminium liquid layer and enters dielectric substrate and leave aluminium flowing-out mouth, pass through step motor control stainless steel guide rod N miles of relative movement according to this principle, two horizontal datas can be measured, bottom land pressure drop and ionogen pressure drop information can be obtained simultaneously; 3, precipitation detects at the bottom of the electrolytic bath, precipitation can be divided into two kinds of hard-caked sediment and soft precipitations at the bottom of the electrolytic bath, if what stainless steel guide rod N check point touched is soft precipitation, stainless steel guide rod N check point A can enter into precipitation inside so, be an equation body according to precipitation surface and aluminium liquid layer so, the soft precipitation top layer should be consistent with the aluminium fluid pressure drop, therefore touching soft precipitation can make the electrolyzer pressure drop descend, if instead what touch is hard-caked sediment, because the contact drop that hard-caked sediment causes can make the electrolyzer pressure drop raise on the contrary.
This aluminium cell comprehensive detector is by two joint 12V lead-acid cell power supplies, wherein a joint is the power supply of power source circuit 1 part, power source circuit 1 provides regulated supply for whole instrument, by chip U10, resistance R 15, resistance R 49, electric capacity 35, electric capacity 36, electric capacity 37, electric capacity 38, capacitor C 39, inductance L 11,3.3V source of stable pressure and chip U8 that inductance L 13 and LED lamp L12 form, resistance R 43, capacitor C 31, capacitor C 32, capacitor C 33, schottky diode D10, the 5V voltage stabilized source that inductance L 10 and LED lamp L5 form, its chips U10 adopts LT1121, chip U8 adopts LM2576 electric capacity 37, electric capacity 35, electric capacity 38, electric capacity 36, capacitor C 32, capacitor C 31, capacitor C 33 is filter capacitor, connect the analog power that inductance L 13 produces 3.3V at the 3.3V power supply, resistance R 49 connects power supply ground will simulate ground and its isolation, LED lamp L12 and LED lamp L5 are power light, and resistance R 50 and resistance R 43 is as respectively as the current-limiting resistance of LED lamp; Watchdog reset circuit 2 realizes that circuit hardware resets, comprise chip U5, button K1, resistance R 31, resistance R 32, resistance R 33 and capacitor C 30, its chips U5 adopts IMP706, the PB6 of processor chips U7 and NRST connect 7,6 pins of chip U7 respectively, can realize this instrument hardware reset function less than in 200 milliseconds, producing the positive negative pulse stuffing dual mode by the PB6 pin of button K1 and processor chips U7, prevent that deadlock, program fleet phenomenon from taking place; JTAG program download circuit 3 is finished the program download function, comprise connector U4, resistance R 26, resistance R 27, resistance R 28, resistance R 29, resistance R 30 and capacitor C 28, wherein resistance R 27, resistance R 28, resistance R 29, resistance R 30 are pull-up resistor, R26 is pull down resistor, C28 is filter capacitor, finishes the program download function by emulator; Battery electric quantity testing circuit 4 realizes that battery electric quantity detects, comprise resistance R 15, resistance R 16, resistance R 17, resistance R 18, resistance R 19, resistance R 20, resistance R 21, capacitor C 20, triode Q1, triode Q2, capacitor C 21, wherein triode Q1 is NPN, triode Q2 is PNP, the PC0 of chip U7 and PG10 are connected on resistance R 16 and resistance R 17 1 ends respectively, two joint lead-acid celies are connected on resistance R 21 1 ends, when the PG10 of chip U7 pin is high level, cell voltage enters the road AD pin PC0 of chip U7 through triode Q2, processor chips U7 can detect cell voltage by the PC0 pin, cross when low when battery electric quantity, send guard signal; Circuit for controlling motor 5 realizes that the control step motor rotates, comprise chip U3, connector P1, switch S 21, insurance F1, resistance 1, resistance 2, resistance 4, resistance 7, resistance 9, resistance 10, resistance 11, resistance 12, electric capacity 5, electric capacity 8, electric capacity 10, electric capacity 12, electric capacity 14, electric capacity 15, electric capacity 16, electric capacity 17, diode D1, diode D7, wire jumper seat J1, wire jumper seat J2 and stepper-motor M, wherein connector P1 connects two 12V lead-acid celies as the 24V power supply interface of motor, S21 is the trip switch of stepper-motor M, chip 3 adopts the L298N motor drive ic, wire jumper seat J1 is used for selecting half step or full step mode, wire jumper seat J2 is used for selecting decay or evanescent mode fast at a slow speed, 5 pin of U3,21 pin, 8 pin, the 16 pin drive-motor that links to each other with stepper-motor rotates, and 2 pin, 1 pin, 23 pin, 14 pin respectively with the PB0 pin of processor chips U7, the PB1 pin, the PB5 pin, the PB8 pin links to each other, the PB5 pin of processor chips U7 is for generation of reset signal, the reset drives chip, during PB8 pin output high level, thereby the PB1 pin produces clock pulse signal control step motor M rotating speed, PB0 output high-low level control step motor M is just changeed or is reversed, and cooperates stainless steel guide rod N to use and can realize that move distance detects; Keystroke interface circuit 6 is finished user input capability, comprise diode D2, diode D3, diode D4, diode D5, diode D6 and each button S1 to S20, the PD7 pin of processor chips U7, PD8 pin, PD9 pin, PD10 pin are connected to the line scanning of button respectively, PD11 pin, PD12 pin, PD13 pin, PD14 pin, PD15 pin are connected to the column scan of button respectively, if there is button to press, can obtain the rank scanning sign indicating number of button, finally determine the button that is pressed; The angle of finishing the AD testing circuit detect and the electrolytic aluminum bottom land to leaving the dielectric substrate voltage condition, comprise chip U1, chip U2, resistance R 3, resistance R 5, resistance R 13, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 6, capacitor C 7, capacitor C 9, capacitor C 11, capacitor C 13, crystal oscillator X1, plug socket J3 and plug socket J4, combination hub J3 send angular transducer detected stepper-motor M inclination angle and plummet angle signal 2 mouthfuls of the 6 pin AD switching channels of chip U2, combination hub J4 delivers to bath voltage 1 mouthful of the 7 pin AD switching channel of chip U2, the AD77051 that chip U2 adopts is 16 high precision analogue conversion chips, chip U1 adopts REF193 3V reference power supply, the REF+ that output pin 6 meets AD chip U2 provides votage reference for it, 1 pin of chip U2,12 pin, 13 pin and 14 pin respectively with the PA8 pin of processor chips U7, the PB9 pin, the PA9 pin links to each other with the PA10 pin, processor chips U7 sends to chip U2 by the PA9 pin with the control command of AD chip, and transmitting angle and the bath voltage information that chip U2 collects by the PA10 pin, the line correlation of going forward side by side is handled; Microprocessor 8 is finished bath voltage and is detected, stepper-motor M adjustable-speed rotating campaign, electrolytic tank electrolysis matter temperature detection, two level detection, SD card data storage and control functions such as other peripheral circuits by interface, comprise chip U7, resistance R 14, resistance R 22, resistance R 25, capacitor C 18, capacitor C 19, capacitor C 22, capacitor C 23, capacitor C 24, capacitor C 26, capacitor C 25, capacitor C 27, inductance L 1, inductance L 2, crystal oscillator X2, crystal oscillator X3, diode D8, diode D9, battery BT1, wherein U7 adopts STM32F103ZET, battery BT1 is that system's real-time clock continued operation after backup power source guaranteed system cut-off; SD card memory circuit 9 is realized data storage function, comprise SD deck SD1, resistance 34, resistance 35, resistance 36, resistance 37 and capacitor C 29,1 pin of SD deck, 2 pin, 5 pin and 7 pin are connected with PB14 with SPI interface pin PB12, PB15, the PB13 of processor chips U7 respectively, utilize the SPI signalling methods with data information memory in the SD card, inquire about use in order to the user; Limit switch circuit 10 is finished stepper-motor M sports limiting function, comprise combination hub CN1, chip U6, resistance R 38, resistance R 39, resistance R 40, resistance R 41, resistance R 44, resistance R 45, resistance R 46, resistance R 47, LED lamp L6, LED lamp L7, LED lamp L8 and LED lamp L9, wherein U6 adopts the TLP521-4 opto-coupler chip, inner integrated 4 road photoelectric isolating circuits, 4 road transistor collector port ones, 6 pin, 14 pin, 12 pin and 10 pin connect the PE12 pin of processor chips U7 respectively, the PE13 pin, PE14 pin and PE15 pin, socket C1 connects 4 tunnel outside limit switches and is used for the spacing use of stepper-motor M, bright to LED lamp that should the road when the conducting of a certain road of outside limit switch, this road can drag down corresponding process chip U7 pin simultaneously, and whether therefore can judge the stepper-motor movement position by the corresponding pin high-low level of measurement processor chip transfinites; Electric thermo-couple temperature testing circuit 11 is finished electrolytic tank electrolysis matter temperature detecting function, comprise chip U9, capacitor C 34 and combination hub P2, combination hub P2 connects thermopair and by stepper-motor M1 motion the thermopair check point is sent in the electrolytic tank electrolysis matter, send detected temperature signal the chip U9 of band cold junction compensation function to, chip U9 after treatment with temperature signal with the SPI communication modes by 7 pin to the PA6 pin that sends processor chips U7 to conscientious analyzing and processing also; Liquid crystal display circuit 12 is realized the man-machine friendly function of data presentation, comprise LCD MODULE LCD1 and resistance R 48, capacitor C 41, capacitor C 42, capacitor C 43, capacitor C 44, capacitor C 45 and chip U11, wherein Liquid Crystal Module LCD1 adopts 3.5 cun liquid crystal displays, 5 pin of LCD1,6 pin, 7 pin, 8 pin, 9 pin, 10 pin, 11 pin, 12 pin, 13 pin, 14 pin, 15 pin, 16 pin are respectively at the PF2 pin of processor chips U7, the PF3 pin, PF0 pin and PF1 pin, the PE0 pin, the PE1 pin, the PE2 pin, the PE3 pin, the PE4 pin, the PE5 pin, PE6 pin and the choosing of PE7 pin connect, processor chips U7 is by these interface read-write Liquid Crystal Modules LCD1, chip U11 is touch-screen process chip AD7846 in addition, and the user also can realize human-computer interaction function by pressing touch-screen.
Need to prove; the category of the utility model protection is not limited to above-described embodiment; the parameter acquisition device also is not limited to stepper-motor and connects a kind of mode of stainless steel guide rod; storage mode also is not limited to a kind of mode of SD card; so long as adopt above-mentioned measuring principle, the system that utilizes microprocessor to measure a plurality of parameters of aluminium cell automatically all is protection domain of the present utility model.
Claims (7)
1. aluminium cell comprehensive detector, main by the electric thermo-couple temperature testing circuit that links to each other with microcontroller, the AD testing circuit, SD card memory circuit, circuit for controlling motor and limit switch circuit are formed, it is characterized in that: circuit for controlling motor is connected with stepper-motor, stepper-motor is connected with the stainless steel guide rod by leading screw, stainless steel guide rod one end check point inserts in the electrolyzer, the other end is connected conduct with reference to point with the electric tank cathode bus, microcontroller rotates by control step motor motor, by leading screw stainless steel one end check point is sent in the electrolyzer, the other end removes electric tank cathode bus point for referencial use, gathers electrolyzer pressure drop information automatically by the stepper-motor motion.
2. electrolyzer comprehensive detector as claimed in claim 1, it is characterized in that: the AD testing circuit comprises that bath voltage detection and stainless steel and vertical angle detect, it is spacing to cooperate stepper-motor motion and limit switch to touch bottom land, calculate stainless steel guide rod check point and bottom of electrolytic tank vertical line distance, simultaneously since dielectric substrate and aluminium liquid layer and dielectric substrate and aluminium flowing-out mouth place voltage exist obvious must saltus step, so can measure simultaneously aluminium level, electrolyte level and electrolyzer from bottom land to aluminium flowing-out mouth voltage change situation.
3. electrolyzer comprehensive detector as claimed in claim 1 or 2 is characterized in that: by thermopair is fixed on the stainless steel guide rod, enters and detect electrolytic tank electrolysis matter temperature in the dielectric substrate.
4. electrolyzer comprehensive detector as claimed in claim 3, it is characterized in that: microprocessor also is connected with liquid crystal display circuit.
5. electrolyzer comprehensive detector as claimed in claim 4 is characterized in that: electric thermo-couple temperature testing circuit employing MAX6675 special electric thermo-couple temperature acquisition chip.
6. electrolyzer comprehensive detector as claimed in claim 5 is characterized in that: microprocessor employing STM32F103ZET high speed microprocessor.
7. electrolyzer comprehensive detector as claimed in claim 6, it is characterized in that: SD card memory circuit is with SPI signalling methods storing data information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320157539 CN203174210U (en) | 2013-04-01 | 2013-04-01 | Integrated detector of aluminum electrolysis cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320157539 CN203174210U (en) | 2013-04-01 | 2013-04-01 | Integrated detector of aluminum electrolysis cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203174210U true CN203174210U (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320157539 Expired - Lifetime CN203174210U (en) | 2013-04-01 | 2013-04-01 | Integrated detector of aluminum electrolysis cell |
Country Status (1)
| Country | Link |
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| CN (1) | CN203174210U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954320A (en) * | 2014-05-16 | 2014-07-30 | 北方工业大学 | Comprehensive measurement device and method for temperature and aluminum level in aluminum electrolysis process |
| CN107576409A (en) * | 2017-08-25 | 2018-01-12 | 张安全 | Electrolytic cell aluminium level and electrolyte level height and bath temperature On-line Measuring Method |
| CN110129831A (en) * | 2019-06-19 | 2019-08-16 | 沈阳鑫博工业技术股份有限公司 | A kind of aluminium cell technique multi-parameter on-line measurement device and measurement method |
-
2013
- 2013-04-01 CN CN 201320157539 patent/CN203174210U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954320A (en) * | 2014-05-16 | 2014-07-30 | 北方工业大学 | Comprehensive measurement device and method for temperature and aluminum level in aluminum electrolysis process |
| CN103954320B (en) * | 2014-05-16 | 2016-05-18 | 北方工业大学 | Method for measuring temperature and aluminum level in aluminum electrolysis process |
| CN107576409A (en) * | 2017-08-25 | 2018-01-12 | 张安全 | Electrolytic cell aluminium level and electrolyte level height and bath temperature On-line Measuring Method |
| CN110129831A (en) * | 2019-06-19 | 2019-08-16 | 沈阳鑫博工业技术股份有限公司 | A kind of aluminium cell technique multi-parameter on-line measurement device and measurement method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |