FR2357967A2 - METHOD AND APPARATUS FOR CHECKING IMMINENT FAILURES OF JOULE-EFFECT HEATING ELECTRODES - Google Patents

METHOD AND APPARATUS FOR CHECKING IMMINENT FAILURES OF JOULE-EFFECT HEATING ELECTRODES

Info

Publication number
FR2357967A2
FR2357967A2 FR7720172A FR7720172A FR2357967A2 FR 2357967 A2 FR2357967 A2 FR 2357967A2 FR 7720172 A FR7720172 A FR 7720172A FR 7720172 A FR7720172 A FR 7720172A FR 2357967 A2 FR2357967 A2 FR 2357967A2
Authority
FR
France
Prior art keywords
joule
checking
heating electrodes
electrodes
effect heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR7720172A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Owens Corning
Original Assignee
Owens Corning Fiberglas Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/702,543 external-priority patent/US4063027A/en
Application filed by Owens Corning Fiberglas Corp filed Critical Owens Corning Fiberglas Corp
Publication of FR2357967A2 publication Critical patent/FR2357967A2/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0019—Circuit arrangements
    • H05B3/0023—Circuit arrangements for heating by passing the current directly across the material to be heated

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

L'invention concerne la détection du déplacement des électrodes de chauffage par effet Joule d'une matière opaque. Elle se rapporte à un procédé selon lequel la variation de résistance entre des paires d'électrodes est déterminée sur une longue période, par rapport à la valeur initiale, et permet ainsi la détermination d'un affaissement d'une ou plusieurs électrodes et de la direction d'affaissement. Application au contrôle du fonctionnement des fours à verre chauffés par effet Joule.The invention relates to the detection of the displacement of the heating electrodes by the Joule effect of an opaque material. It relates to a method according to which the variation of resistance between pairs of electrodes is determined over a long period, relative to the initial value, and thus allows the determination of a sag of one or more electrodes and of the direction of sag. Application to the control of the operation of glass furnaces heated by the Joule effect.

FR7720172A 1976-07-06 1977-06-30 METHOD AND APPARATUS FOR CHECKING IMMINENT FAILURES OF JOULE-EFFECT HEATING ELECTRODES Pending FR2357967A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/702,543 US4063027A (en) 1975-11-10 1976-07-06 Method of and apparatus for monitoring for electrode displacement in the Joule effect heating of heat softenable material

Publications (1)

Publication Number Publication Date
FR2357967A2 true FR2357967A2 (en) 1978-02-03

Family

ID=24821644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720172A Pending FR2357967A2 (en) 1976-07-06 1977-06-30 METHOD AND APPARATUS FOR CHECKING IMMINENT FAILURES OF JOULE-EFFECT HEATING ELECTRODES

Country Status (5)

Country Link
AU (1) AU512059B2 (en)
BE (1) BE856271R (en)
DE (1) DE2730049A1 (en)
FR (1) FR2357967A2 (en)
GB (1) GB1587563A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064086A1 (en) * 1981-04-30 1982-11-10 Elemelt Limited Furnace for the melting of glass

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR95793E (en) * 1965-11-11 1971-06-25 Knapsack Ag Device for measuring the current flowing through the individual electrodes of electrolytic cells.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR95793E (en) * 1965-11-11 1971-06-25 Knapsack Ag Device for measuring the current flowing through the individual electrodes of electrolytic cells.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064086A1 (en) * 1981-04-30 1982-11-10 Elemelt Limited Furnace for the melting of glass

Also Published As

Publication number Publication date
AU2647577A (en) 1979-01-04
DE2730049A1 (en) 1978-03-30
GB1587563A (en) 1981-04-08
BE856271R (en) 1977-10-17
AU512059B2 (en) 1980-09-18

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