DD147473A3 - METHOD AND ARRANGEMENT FOR SHORT-CIRCUIT DETECTION, IN PARTICULAR BOTH ELECTROLYTIC COPPER REFINING - Google Patents

Abstract

Claim 1: A method for automatic verification and detection of short circuits in electrolysis baths, characterized in that the short circuit formation is detected by the rising temperature value and visually displayed.

Description

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Method and Arrangement for short-circuiting, in particular, for electrolytic kiev filter filtration

The invention relates to a method and an arrangement for detection and "designation of occurring short circuits, in particular during the electrolytic Kupferräffination.

Short circuits in "electrolysis" baths increase the specific energy consumption by ... preventing the current efficiency, whereby the cathode temperatures heat up differently depending on the currents flowing through them «

Known and applied are methods that allow plaguing the occurring short circuits by determining the different 'heating of the cathode bars by palpation by hand

 Furthermore, it has been known and suggested to take advantage of the magnetic effect of the direct current. It will help with

a G-outsider. the magnetic field density measured in the vicinity of the cathodic rods is 'the magnetic'. Peldinal density is considered a measure of the flowing G-Ieichstrom *. It is also known that the bath voltage depends on the bath resistance, In the case of a short circuit, between two electrodes, I set a low bath resistance, and thus a low bath voltage Value and from this a model tension is calculated, which • allows for an Ejitso divorce. · If - a.

In addition, a method known in the field of recording and reproducing, based on the use of heat by means of special infrared fibrillation, is known. The difference in the intensity of the infrared radiation emanating from the cathode rods serves as the decisive criterion a short circuit detection. '.... Furthermore, a device for detecting short-circuits in electric fluid baths is known, which measures the short-circuit current occurring in the event of short circuit as a voltage drop over a defined measuring distance on the cathode bar with a defined resistance Millivolt meters, or an electronic threshold value can be used _;

The short-term search by hand has the disadvantage that it depends on the sense of the respective examiner, and thus is subjective and faulty.; At / higher bath temperatures, which in. Measurements ¹ ZVlT can be used, the human capacity, the. In the case of low temperature differences no longer limits. In addition, short circuits that .. the decision "can '. Are available, are not found by this method · The method of magnetic Beldlinien.dichtemessung has the Hachteilj that the measure selective, may not be enough.' Particularly makes itself felt in the Endbädern, wherein the influence of the leakage magnetic field occurs around the ^{Katodenstäbe;.;} '.

At bath voltages, it proves to be unfavorable that the bath in which short circuits occur can be located, a direct assignment of the corresponding short circuit to the short-circuited electrodes ^. -not possible. _: The process for Peststellung of short-circuits by means of infrared camera has the disadvantage that considerable economic expenses or technological changes in the relevant 'Produlctionsverfahren für.einen use sind..Außerdem required is the application of this method, an equal Eniissionsvermögen all Katodenstäbe requires additional under operating conditions Technological measures required. , , ·. ·. ·. ···· ·

The device for determining Kursachiüssen in electrolysis baths has the disadvantage that the working conditions are not significantly improved as a continuation of the baths with the gate direction is still required or that the proposed frame arrangement a permanent disturbance of PiOduktionsablaufs in the elimination of course - represents conclusions and is therefore not compatible with automation *. · ·.

The purpose of the invention is to ensure an early detection of short circuits with the aid of a measuring method and arrangement optimally adapted to the given technological conditions

  thereby achieving an increase in the current efficiency.

The invention has for its object to provide an automatically running measuring method and -Arangement, with the help of short circuits during an electrolysis process in its formation phase. Early ·, objectively and. can be detected and rejected without disturbing the technological process _o

According to the invention, this object is achieved in that the rising during the short circuit between the anode and cathode in Katödenstab Joule heat is detected by thermistors, with an automatic evaluation of their resistance changes in a portable elelttrprilö'cheii display and evaluation, takes place, the thermistors are: .dabei arranged in individual thermally and electrically mutually insulated copper blanks below the electroless ends of the cathode bars, with an automatic correction of. Temperature threshold - with respect to the respective 'primary influencing variables, the individual'Bades, As Badeinlauf- or »outlet temperature, ambient temperature u. ä ₀ :, by further thermistors as Hess-, feeler means, a'nncheschalteten electronic assembly in the display and evaluation part, made.

· For continuous short-circuit monitoring, the sys- tems are switched on. Bathing pending information values either in, bath groups or * bath rows or ^ centrally summarized and a data acquisition system or Meßverarbeitungsanlage zug- ''; leads. >;' ^: . '.-. , "V;"'·".-";' - _: ' -.'. ''. _v . ' : '

Likewise ^: da5 output signal to control .maschinellen. Facilities for short-circuit removal usable. , . '. ·.'

^The: inventive solution has over known arrangements the advantage that the arrangement of the sensor under, the electroless end of Katodenstäbe no intervention in the technological sequence of an electrolysis process are required "The method and arrangement enable early knowledge of the Semperaturregimes of the respective electrolyte e- 'Bades and an early, automatic assignment of an existing short circuit. the relevant cathode rod without subjective influence. In addition, the use of this method and arrangement prevents the possibility of adjacent shorts occurring by walking through the manual shorting detection baths. Furthermore, the erfindungagemäße solution ensured by the; Reduction of short circuit numbers one increase of current efficiency and improvement of cathode quality · D.-i'eyond is the method and arrangement. economically and technically 'have inexpensive and easy to ^hand-: -'

The invention is intended, hereinafter several. Ausführungsbelspielielen, be explained in more detail. In the accompanying notes:;

Pig «; 1: an arrangement for the determination of short circuits in ..- of the overall view j. , ·,

Pig * 2ϊ an A-A Schnatt according to Pig. 1 ; Pigo 3: the plan view of a section of an electrolysis bath with an underlayed measuring arrangement;

, Pig. 4r Sclmitt by an electrolysis bath with underneath measuring; '.. - Arrangement _β /. , , -

Kürzßchlußfeststolluni; Am bath

The cathode rod Ί is heated by the current flowing through it. In the "relevant cathode" (stat), there is an increase in the temperature values in the case of the short circuit. * Ties are detected as follows ti '.

In the thermal and -electrical "non-ionic" -glass bearing blocks 3 toe arranged on the measuring axis .2, there are the in-millimeter inserters 4, which have been inserted into them.

This measuring rail 2 is according to 'Pig. 3 under the .stromlosen ends of Katodenstä be "1 set. Guided Upon occurrence of Kurzschlüsöen v / ill be caused by the increase of the Joulsclien Wäririe value-based resistance change of Sherraistören. A Aiischlußkasten 5 to a portable ErfasGungc- and Hachv" ^r eisteil 6 ,

This signal indicates the exceeding of a signal / cell value automatically adjusted to the primary influences of the single bath by means of an optical display. Dos voltage; - vorsorgungsteil, the electronic SChv / ellwertschalter _and: optische'Kursschlußanseigevorrichtung are in the transportable Erfacsungs- and liachweisteil G housed ·.

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In another embodiment, instead of the transportable detection and Uachweistciles 6 used directly at the bathroom, • the change in resistance caused by the increase in temperature of the Hessian tunnels over the Meßs-tellenunischalter a central Hessv / ertorfassungsanlage _Ρ The individual 'Elektrol.ysebäder can then automatically or manually checks for shorts • checks where

Claims (4)

Erf in_duigsig8prucli · Method for automatically checking and detecting short circuits in electrolysis baths, characterized in that the short circuit formation is detected by the rising temperature value and visually indicated. 2. The method according to item 1, characterized in that an automatic correction of the temperature threshold in dependence on the respective primary influencing variables of the individual .Bath takes place: '..... · _:. , '. 3. Arrangement for carrying out the method according to Pkt. 1 to 2   for the automatic testing and plaguing of short circuits in electrolysis baths, characterized by the attachment of in Meßfühlereinsätzen cast (4) thermistors in thermally ^and: electrically insulated from one another Gu-bearing blocks   (3) on the de-energized side of the. Cathode rods (1). 4. Arrangement according to item 3 », characterized in that the detection of the increase in temperature caused by temperature rise of the thermistors is carried out by means of a position change-over switch in a portable detection and detection unit or a central measured value detection system or in bath grids or bath rows. .. '. 'For this 3 sheets drawings