CN104155331A - Portable field measurement device for liquidus temperature of aluminum electrolyte - Google Patents
Portable field measurement device for liquidus temperature of aluminum electrolyte Download PDFInfo
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- CN104155331A CN104155331A CN201410361046.6A CN201410361046A CN104155331A CN 104155331 A CN104155331 A CN 104155331A CN 201410361046 A CN201410361046 A CN 201410361046A CN 104155331 A CN104155331 A CN 104155331A
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Abstract
The invention discloses a portable field measurement device for liquidus temperature of an aluminum electrolyte, and relates to a measurement device for electrolysis temperature of aluminum. The portable field measurement device comprises a sampler, a temperature sensor, a metal guide rod, a compensation lead, a handle and a measurement instrument. The temperature sensor consists of two thermocouples, one thermocouple is arranged in the middle of the sampler for providing a reference temperature, the other thermocouple is arranged at the bottom of the sampler for providing a tested temperature, the two thermocouples achieve temperature transmission by being connected with a temperature measurement instrument through the compensation lead; the measurement instrument consists of a touch screen, a single board computer, a storage battery, a charger and a box body, and the touch screen is capable of displaying a cold distributing curve and a differential thermal curve of a temperature drop process of electrolyte melt in real time, and displaying and exporting measurement data and the curves. The portable field measurement device has the advantages of being high in temperature measurement speed and high in intelligent degree, achieving field real-time measurement, displaying and recording, being convenient to carry and being capable of performing cyclic detection on the liquidus temperature of the electrolyte in an industrial aluminum electrolytic cell.
Description
Technical field
The present invention relates to a kind of aluminium electrolytic temperature measurement mechanism, particularly relate to a kind of portable onsite measurement device for aluminum electrolyte initial crystal temperature.
Background technology
Aluminium electrolyte electrolysis temperature, liquidus temperature and the degree of superheat are the important technical parameters in aluminum smelting technology process, electrolysis temperature, liquidus temperature and the degree of superheat and electrolytic process electrolytic tank thermal equilibrium have substantial connection, and electrolyte superheat degree increases, and charcoal consumption increases, ledge attenuate, the shortening of stretching one's legs; Electrolyte superheat degree reduces, and ledge thickens, and stretches one's legs elongated.Therefore electrolyte melt temperature directly affects thermal stability and the current efficiency of electrolytic tank, even can affect bath life.In laboratory, with specific thermal analyzer, liquidus temperature of aluminium electrolyte is measured, because sampling, cooling, crystallization, remelting meeting change bath composition, cause the inaccuracy of measurement result, laboratory off-line analysis lags behind simultaneously, cannot be on-the-spot to actual production real-time monitoring.
Adjust manufacturing condition by liquidus temperature, keep between 8～10 DEG C of the degrees of superheat, can make electrolytic tank form good ledge crust, impel material balance and the energy equilibrium of electrolytic tank, finally realize stablizing of electrolyte ingredient and stablizing of electrolysis temperature, improve current efficiency, reduce energy consumption.Therefore control has greater significance to Aluminium Electrolysis for rapid and accurate determination aluminium cell high-temperature electrolysis matter melt liquidus temperature, the degree of superheat.
Summary of the invention
The object of the present invention is to provide a kind of portable onsite measurement device for aluminum electrolyte initial crystal temperature, this device can directly carry out tour inspection to on-the-spot aluminium industrial cell electrolyte primary crystal temperature and the degree of superheat, have measurement quick and precisely, the feature such as safe and reliable, intelligent degree is high, easy to carry, existing field real-time measurement.
The object of the invention is to be achieved through the following technical solutions:
Portable onsite measurement device for aluminum electrolyte initial crystal temperature, described device comprises sampler, sampler connecting rod, thermopair, compensating line joint, metal guide rod, handle, compensating wire, measuring instrument; Measuring instrument is made up of touch-screen, single card microcomputer, accumulator, charger, casing, metal guide rod lower end welding sampler, and temperature sensor is welded in sampler, and one end is stretched in sampler, and the other end is connected with measuring instrument by compensating wire; Temperature sensor adopts two K-type nickel chromium-nickel silicon thermocouples composition, and electric thermo-couple temperature induction end stretches into sampler 10mm, and one is placed in sampler middle part, measures as reference temperature, and other one is placed in sampler bottom, two thermopair spacing 10mm.
Described portable onsite measurement device for aluminum electrolyte initial crystal temperature, described measuring instrument touch-screen adopts LED display.
Described portable onsite measurement device for aluminum electrolyte initial crystal temperature, described measuring instrument LED display has " data demonstration ", " data sheet ", " historical trend ", " real-time tendency ", " parameter setting ", " copyright statement " displaying block.
Described portable onsite measurement device for aluminum electrolyte initial crystal temperature, the inner accumulator of installing of described device.
Described portable onsite measurement device for aluminum electrolyte initial crystal temperature, described measuring instrument is provided with USB flash disk interface.
Described portable onsite measurement device for aluminum electrolyte initial crystal temperature, described measuring instrument adopts 24v power supply, lithium battery 5000mA, and be provided with temperature correction instrument.
Advantage of the present invention and effect are:
The present invention have measurement quick and precisely, the advantage such as safe and reliable, intelligent degree is high, easy to carry, existing field real-time measurement.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
fig. 2 is the cold curve of example cloth of the present invention and differential thermal curve figure.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the invention will be further described.
The invention provides and a kind of portablely can directly carry out tour inspection device to on-the-spot aluminium industrial cell electrolyte primary crystal temperature and the degree of superheat.The present invention includes sampler, temperature sensor, metal tube, handle, compensating wire, measuring instrument formation.
Metal tube is divided into two sections, between two sections, adopts and is threaded, and Metallic rod lower end is welded with sampler, and epimere is equipped with handle, and temperature inductor is made up of two K type nickel chromium-nickel silicon thermocouples, is welded in sampler, and its temperature sense end stretches in sampler.Two thermopairs wherein one insert sampler middle part, as reference temperature, insert sampler bottom for other one, as measuring temperature; Two other one end of thermopair are connected by connection terminal with measuring instrument by compensating wire, and compensating wire is inserted in metal tube.
Measuring instrument detects to such an extent that temperature signal is converted to digital signal by temperature probe.Measuring instrument can be to temperature correction, real time data list demonstration, the demonstration of real time data figure, file designation and to data storage etc., and it is temperature survey intelligent kernel using single-chip microcomputer as main control unit.Measurement data is passed to LED touch-screen by serial ports, can directly show, control measured electrolyte sample temperature variation curve by touch-screen.
Measuring instrument temperature variation curve comprises the cold curve of cloth and differential thermal curve.According to aluminium electrolyte system phase diagram, when reducing, liquid phase region electrolyte temperature reaches system component Tc, system undergoes phase transition, discharge latent heat of phase change can make to decline temperature curve keep one section of temperature constant state, there is flex point in curve, when system is issued to thermal equilibrium in new condition, temperature can continue to decline, the temperature-time curve of drawing out is like this cold curve of cloth, and when flex point appears in the cold curve of cloth, electrolyte temperature is liquidus temperature.Differential thermal curve is to describe temperature difference (reference temperature and measurement temperature)-time curve, in the time that electrolyte system temperature is reduced to liquidus temperature, system undergoes phase transition, discharging latent heat of phase change can make to measure temperature and slightly raise, the temperature difference diminishes, there is minimum value in curve, now minimum point temperature is liquidus temperature, and when the cold curve of cloth occurs liquidus temperature flex point with differential thermal curve, displaying time should be consistent.Electrolyte temperature and liquidus temperature difference are the degree of superheat.
Embodiment:
Accompanying drawing 1 description of symbols: 1-sampler, 2-sampler connecting rod, 3-thermopair, 4-compensating line joint, 5-metal guide rod, 6-handle, 7-compensating wire, 8-measuring instrument.Sampler 1 is put into electrolytic tank aluminium electrolyte melt, start measuring instrument 8, click " newly-built " in data display function piece, numbering is measured in name, clicks and starts, and measuring instrument 8 enters working stage.When measurement, will be equipped with sampler 1 Metallic rod 2 by handle 6 is inserted in bath of cell, observe the cold curve of cloth and differential thermal curve figure in measuring instrument 8 " enforcement trend " functional block, through some seconds, the electrolyte temperature that measuring instrument 8 shows is not rising, reach steady state (SS), Metallic rod 2 and sampler 1 are taken out from electrolytic tank, be positioned over the smooth position of electrolytic bath shell, make sampler 1 electrolyte Slow cooling, gauger observes the cold curve of cloth and differential thermal curve in measuring instrument 8 " enforcement trend " functional block, in the time there is flex point in curve, click measuring instrument 8 " data demonstration " functional block and " stop " button, test process finishes.There is electrolytical sampler again to insert in electrolytic tank by residual inside, treat the fusing that again heats up of part electrolyte, electrolyte in sampler is poured out.Data processing: click the measuring instrument 8 touch-screens cold curve of " enforcement trend " functional block cloth and differential thermal curve flex point, corresponding flex point place liquidus temperature is recorded and shows in real time, and the degree of superheat is calculated and shown by measuring instrument 8 according to electrolysis temperature and liquidus temperature value difference value.Click measuring instrument 8 touch-screens " data demonstration " functional block " save data " button, can store test data; Click measuring instrument 8 touch-screens " historical trend " functional block, can show the cold curve of cloth, differential thermal curve, liquidus temperature and the degree of superheat to storing data.
Claims (6)
1. portable onsite measurement device for aluminum electrolyte initial crystal temperature, is characterized in that, described device comprises sampler, sampler connecting rod, thermopair, compensating line joint, metal guide rod, handle, compensating wire, measuring instrument; Measuring instrument is made up of touch-screen, single card microcomputer, accumulator, charger, casing, metal guide rod lower end welding sampler, and temperature sensor is welded in sampler, and one end is stretched in sampler, and the other end is connected with measuring instrument by compensating wire; Temperature sensor adopts two K-type nickel chromium-nickel silicon thermocouples composition, and electric thermo-couple temperature induction end stretches into sampler 10mm, and one is placed in sampler middle part, measures as reference temperature, and other one is placed in sampler bottom, two thermopair spacing 10mm.
2. portable onsite measurement device for aluminum electrolyte initial crystal temperature according to claim 1, is characterized in that, described measuring instrument touch-screen adopts LED display.
3. portable onsite measurement device for aluminum electrolyte initial crystal temperature according to claim 2, it is characterized in that, described measuring instrument LED display has " data demonstration ", " data sheet ", " historical trend ", " real-time tendency ", " parameter setting ", " copyright statement " displaying block.
4. portable onsite measurement device for aluminum electrolyte initial crystal temperature according to claim 1, is characterized in that, the inner accumulator of installing of described device.
5. portable onsite measurement device for aluminum electrolyte initial crystal temperature according to claim 1, is characterized in that, described measuring instrument is provided with USB flash disk interface.
6. portable onsite measurement device for aluminum electrolyte initial crystal temperature according to claim 1, is characterized in that, described measuring instrument adopts 24v power supply, lithium battery 5000mA, and be provided with temperature correction instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361046.6A CN104155331A (en) | 2014-07-28 | 2014-07-28 | Portable field measurement device for liquidus temperature of aluminum electrolyte |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361046.6A CN104155331A (en) | 2014-07-28 | 2014-07-28 | Portable field measurement device for liquidus temperature of aluminum electrolyte |
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| Publication Number | Publication Date |
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| CN104155331A true CN104155331A (en) | 2014-11-19 |
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| CN201410361046.6A Pending CN104155331A (en) | 2014-07-28 | 2014-07-28 | Portable field measurement device for liquidus temperature of aluminum electrolyte |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371428A (en) * | 2018-12-19 | 2019-02-22 | 东北大学 | A kind of device and method of automatic the detection aluminium electrolyte degree of superheat and electrolysis temperature |
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| CN102494789A (en) * | 2011-12-28 | 2012-06-13 | 东北大学 | Device and method for measuring aluminum electrolyte temperature and liquidus temperature |
| CN103926014A (en) * | 2013-01-14 | 2014-07-16 | 中南大学 | Temperature measuring method and system for aluminum electrolysis primary crystal |
| CN204008517U (en) * | 2014-07-28 | 2014-12-10 | 沈阳化工大学 | Portable onsite measurement device for aluminum electrolyte initial crystal temperature |
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2014
- 2014-07-28 CN CN201410361046.6A patent/CN104155331A/en active Pending
Patent Citations (6)
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| US6231229B1 (en) * | 2000-05-26 | 2001-05-15 | Advanced Micro Devices, Inc. | Instrument and method to measure the duration of exposure to temperature by determining the amount of an indicator material |
| CN2711729Y (en) * | 2003-12-25 | 2005-07-20 | 冯乃祥 | Measurer for aluminium electrolyte fusant temperature, primary crystal temperature and overheat degree |
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| CN102494789A (en) * | 2011-12-28 | 2012-06-13 | 东北大学 | Device and method for measuring aluminum electrolyte temperature and liquidus temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371428A (en) * | 2018-12-19 | 2019-02-22 | 东北大学 | A kind of device and method of automatic the detection aluminium electrolyte degree of superheat and electrolysis temperature |
| CN109371428B (en) * | 2018-12-19 | 2024-04-26 | 东北大学 | Device and method for automatically detecting superheat degree and electrolysis temperature of aluminum electrolyte |
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