US3494850A - Short-circuiting device for electrolytic cell - Google Patents

Short-circuiting device for electrolytic cell Download PDF

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Publication number
US3494850A
US3494850A US584149A US3494850DA US3494850A US 3494850 A US3494850 A US 3494850A US 584149 A US584149 A US 584149A US 3494850D A US3494850D A US 3494850DA US 3494850 A US3494850 A US 3494850A
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United States
Prior art keywords
short
cell
sole plate
circuiting
electrolytic cell
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Expired - Lifetime
Application number
US584149A
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English (en)
Inventor
Paul Druylants
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Solvay SA
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Solvay SA
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Filing date
Publication date
Application filed by Solvay SA filed Critical Solvay SA
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Publication of US3494850A publication Critical patent/US3494850A/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • C25B9/66—Electric inter-cell connections including jumper switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/002—Very heavy-current switches

Definitions

  • This invention relates to a device for short-circuiting an electrolytic cell.
  • the short-circuiting devices of the present invention are particularly adapted for use with mobile mercury cathode cells which electrolyze aqueous solutions of alkali metal halides.
  • the devices generally used for short-circuiting mobile mercury cathode cells consist of a set of rapidbreak disconnectors each having a heavy contact connecting it simultaneously to two copper has bars, one of the bus bars being in contact with the sole plate of one cell and the other of the bus bars being in contact with the sole plate of an adjacent cell and the bus bars being of sufiicient thickness to assure the apportionment of the current along the entire length of the sole plates of the two adjacent cells.
  • Such devices are very expensive due to the considerable quantity of copper used.
  • the disconnectors generally used in electrolytic cells require very rapid operation, i.e., operation in a period on the order of hundredths of a second.
  • the apparatus of the present invention allows relatively slow operation, on the order of a second or a few seconds. This slower operation permits the use of control mechanisms and transmission devices which require substantially less power. Accordingly, the foregoing constitutes an additional advantage of the present invention.
  • the short-circuiting of an electrolytic cell of a serially electrically connected plurality of electrolytic cells is effected by means of a plurality of slow (i.e., on the order of one second or a few seconds) operation disconnectors or switches having electrical contacts, preferably linear tulip contacts,
  • the means for moving the switch members comprises members arranged as a plurality of parallelograms each of which is articulated on a set of guide rods. At least one of the switch members is mounted on each of the parallelograms and there is provided means for simultaneously actuating the sets of guide rods thereby to simultaneously move the parallelograms and therewith the switch members.
  • FIG. 1 is a longitudinal section of the sole plate of a cell provided with the short-circuiting device of the present invention, the disconnectors being in open position;
  • FIG. 2 is a view corresponding to FIG. 1 but in which the disconnectors are in closed position;
  • FIG. 3 is a transverse section of two adjacent cells
  • FIG. 4 is a detailed transverse section of the shortcircuiting device itself.
  • the means for simultaneously moving the switch members of the disconnectors comprises a plurality of parallelograms 1 articulated on guide rods 2, 3 and 4 and connected by transmission rods 5 to a control cylinder 6 (FIGS. 1 and 2).
  • the control cylinder 6 is of conventional construction and axially moves the control rods 5 by hydraulic, pneumatic or magnetic actuation, for example.
  • the cylinder 6 may contain a piston integral with the first of the control rods 5 which piston is driven by means of air or a liquid.
  • the first control rod 5 may be activated in the cylinder 6 electromagnetically.
  • the cylinder 6, in fact, comprises a pneumatic, hydraulic or electromagnetic control switch.
  • each of the parallelograms which side is defined by a rigid metal strap 14, is a plate 7 carrying a plurality of switch members or knives.
  • Silverplated copper linear tulip contacts having fingers 8 mounted in direct electrical contact with the underside of a sole plate 13 of an electrolytic cell by means of a copper angle-piece 19 (FIG. 4).
  • the knives 7 are electrically connected to the sole plate of an adjacent cell by means of flexible copper connections, such as wire, 9 (FIG. 3).
  • flexible copper connections such as wire, 9 (FIG. 3).
  • the guide rods 2, 3 and 4 are articulated at one end to the parallelogram 1 and at the other end to a fixed support frame 12 (FIG. 4).
  • the pltae 7 carrying the knives is mounted on the strap 14 by means of screws 15 and the plate 7 and the parallelogram 1 are electrically insulated from each other by insulation 16, 17 and 18 (FIG. 4).
  • the control switch 6 is actuated to move the control rod 5 and the control rods 5 move the parallelograms 1, the guide rods 2, 3 and 4 on which the parallelograms 1 are articulated permitting the movement of the parallelograms 1 (FIG. 2).
  • the knives are thus moved into engagement with the fingers 8 whereby electrical contact is established for the short-circuiting.
  • the guide rods 5 are moved back to their original axial position by the control switch 6 whereby the parallelograms 1 are returned to their original position (FIG. 1) and the knives are wtihdrawn from engagement with the fingers 8.
  • a series of movable mercury cathode electrolytic cells each having a sole plate and anodes and means electrically connecting the sole plate of one cell with the anodes of an adjacent cell to electrically connect said cels in series
  • means for short-circuiting a cell comprising a plurality of knife switches comprising a plurality of aligned tulip contacts on said sole plate, said contacts being arranged along the length of said sole plate and being fastened directly thereto and in electrically conductive relation therewith, and movable knives engageable with said contacts
  • flexible coupling means electrically connecting said knives with the sole plate of an adjacent cell
  • parallelogram means for moving said knives into and out of engagement with said contacts
  • said parallelogram means comprises parallel pairs of pivotally interconnected toggle-action levers, frame means pivotally supporting one lever of each pair and means pivotally connecting the other lever of each pair with said knife.
  • Apparatus according to claim 1 comprising a link pivotally connected at one end to said knife and extending approximately perpendicular to the direction of movement of said knife and in its plane of movement and frame means pivotally supporting the other end of said link to .guide said knife in its movement.
  • said interconnecting means comprises link means interconnecting said toggle-action levers of said disconnecting switches of said cell.
  • actuating means comprises a fluid pressure motor connected with said interconnecting means.
  • Apparatus according to claim 1 in which said actuating means has an operating time .of the order of a second to a few seconds.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US584149A 1965-10-04 1966-10-04 Short-circuiting device for electrolytic cell Expired - Lifetime US3494850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL656512846A NL147792B (nl) 1965-10-04 1965-10-04 Elektrolyseinrichting met direct op de bodemplaat van elke cel bevestigde vaste, liervormige contacten, die met mesvormige beweegbare contacten van een kortsluitschakelaar kunnen samenwerken en aandrijfinrichting voor die messen.

Publications (1)

Publication Number Publication Date
US3494850A true US3494850A (en) 1970-02-10

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ID=19794298

Family Applications (1)

Application Number Title Priority Date Filing Date
US584149A Expired - Lifetime US3494850A (en) 1965-10-04 1966-10-04 Short-circuiting device for electrolytic cell

Country Status (4)

Country Link
US (1) US3494850A (es)
BE (1) BE687532A (es)
ES (1) ES331847A1 (es)
NL (1) NL147792B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4078984A (en) * 1976-01-13 1978-03-14 Hooker Chemicals & Plastics Corporation Circuit of monopolar electrolytic cells
US4317708A (en) * 1979-12-07 1982-03-02 Olin Corporation Remote-controlled jack for intercell connectors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443112A (en) * 1942-05-30 1948-06-08 American Smelting Refining Contact structure for electrolytic cells
US2508523A (en) * 1946-09-11 1950-05-23 Krebs & Co Device for the protection of the cathodes of electrolytic cells
US2834728A (en) * 1953-03-02 1958-05-13 Oronzio De Nora Impianti Method and apparatus for protecting the cathodes of electrolytic cells

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443112A (en) * 1942-05-30 1948-06-08 American Smelting Refining Contact structure for electrolytic cells
US2508523A (en) * 1946-09-11 1950-05-23 Krebs & Co Device for the protection of the cathodes of electrolytic cells
US2834728A (en) * 1953-03-02 1958-05-13 Oronzio De Nora Impianti Method and apparatus for protecting the cathodes of electrolytic cells

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4078984A (en) * 1976-01-13 1978-03-14 Hooker Chemicals & Plastics Corporation Circuit of monopolar electrolytic cells
US4317708A (en) * 1979-12-07 1982-03-02 Olin Corporation Remote-controlled jack for intercell connectors

Also Published As

Publication number Publication date
NL6512846A (es) 1967-04-05
NL147792B (nl) 1975-11-17
ES331847A1 (es) 1967-07-01
DE1671478A1 (de) 1971-09-30
DE1671478B2 (de) 1975-06-12
BE687532A (es) 1967-03-29

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