GB1260316A - Tubular heating elements and magnesia insulation therefor and method of production - Google Patents

Tubular heating elements and magnesia insulation therefor and method of production

Info

Publication number
GB1260316A
GB1260316A GB1854/69A GB185469A GB1260316A GB 1260316 A GB1260316 A GB 1260316A GB 1854/69 A GB1854/69 A GB 1854/69A GB 185469 A GB185469 A GB 185469A GB 1260316 A GB1260316 A GB 1260316A
Authority
GB
United Kingdom
Prior art keywords
boron nitride
additive
mixture
heating elements
tubular 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.)
Expired
Application number
GB1854/69A
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.)
General Electric Co
Original Assignee
General Electric Co
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
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB1260316A publication Critical patent/GB1260316A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • 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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49087—Resistor making with envelope or housing
    • Y10T29/49089—Filling with powdered insulation

Landscapes

  • Resistance Heating (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

1,260,316. Metal-sheathed heating elements. GENERAL ELECTRIC CO. 13 Jan., 1969 [1 Feb., 1968], No. 1854/69. Heading H5H. [Also in Division C1] A tubular heating element including a metal sheath enclosing a coaxial coiled resistor contains a compacted polycrystalline. electrical insulating mass filling the space between the resistor and the sheath,. which mass is formed from a composition comprising a uniform mixture of granular fused magnesia and from 0À1 to 5À0 per cent by weight of an electrically non-conducting additive in a particulate form, said additive having a structure of the layer type and being boron nitride or a mixture thereof with a silicate, said composition at 85 per cent of its theoretical density having a specific impedance of at least 50 megohm/ins at 1526‹ F. The preferred additives are a mixture of boron nitride with talc or boron nitride with pyrophillite. The additive may be present in an amount of 2% by wt.
GB1854/69A 1968-02-01 1969-01-13 Tubular heating elements and magnesia insulation therefor and method of production Expired GB1260316A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70247468A 1968-02-01 1968-02-01

Publications (1)

Publication Number Publication Date
GB1260316A true GB1260316A (en) 1972-01-12

Family

ID=24821361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1854/69A Expired GB1260316A (en) 1968-02-01 1969-01-13 Tubular heating elements and magnesia insulation therefor and method of production

Country Status (6)

Country Link
US (1) US3477058A (en)
JP (1) JPS49301B1 (en)
DE (1) DE1904873B2 (en)
FR (1) FR2001103A1 (en)
GB (1) GB1260316A (en)
SE (1) SE347598B (en)

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* Cited by examiner, † Cited by third party
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US3622755A (en) * 1969-03-21 1971-11-23 Gen Electric Tubular heating elements and magnesia insulation therefor and method of production
DE1921789C3 (en) * 1969-04-29 1975-02-20 Dynamit Nobel Ag, 5210 Troisdorf Process for the production of pipe fillings for electric radiators
US3658587A (en) * 1970-01-02 1972-04-25 Allegheny Ludlum Steel Electrical insulation coating saturated with magnesium and/or calcium ions
US3678435A (en) * 1970-11-09 1972-07-18 Allis Chalmers Mfg Co Electrical resistor
US3761859A (en) * 1971-07-27 1973-09-25 Philips Corp Heating element having a high heating current
DE2525441C3 (en) * 1975-06-07 1981-04-16 Dynamit Nobel Ag, 5210 Troisdorf Electrically insulating filling for an electric tubular heater
JPS5227598A (en) * 1975-08-28 1977-03-01 Hitachi Heating Appliance Co Ltd Carged material for a heating unit
US4234786A (en) * 1979-02-12 1980-11-18 General Electric Company Magnesia insulated heating elements and method of making the same
DE3278966D1 (en) * 1981-05-18 1988-09-29 Matsushita Electric Ind Co Ltd A shielded heating element and a method of manufacturing the same
DE3272855D1 (en) * 1981-05-19 1986-10-02 Matsushita Electric Ind Co Ltd A shielded heating element
US5977519A (en) * 1997-02-28 1999-11-02 Applied Komatsu Technology, Inc. Heating element with a diamond sealing material
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US20030085034A1 (en) * 2000-04-24 2003-05-08 Wellington Scott Lee In situ thermal processing of a coal formation to produce pyrolsis products
US7040400B2 (en) * 2001-04-24 2006-05-09 Shell Oil Company In situ thermal processing of a relatively impermeable formation using an open wellbore
US7051811B2 (en) 2001-04-24 2006-05-30 Shell Oil Company In situ thermal processing through an open wellbore in an oil shale formation
WO2003036037A2 (en) * 2001-10-24 2003-05-01 Shell Internationale Research Maatschappij B.V. Installation and use of removable heaters in a hydrocarbon containing formation
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NZ567052A (en) 2003-04-24 2009-11-27 Shell Int Research Thermal process for subsurface formations
CA2579496A1 (en) 2004-04-23 2005-11-03 Shell Internationale Research Maatschappij B.V. Subsurface electrical heaters using nitride insulation
US7986869B2 (en) * 2005-04-22 2011-07-26 Shell Oil Company Varying properties along lengths of temperature limited heaters
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EP2010754A4 (en) 2006-04-21 2016-02-24 Shell Int Research Adjusting alloy compositions for selected properties in temperature limited heaters
US7540324B2 (en) 2006-10-20 2009-06-02 Shell Oil Company Heating hydrocarbon containing formations in a checkerboard pattern staged process
WO2008131182A1 (en) 2007-04-20 2008-10-30 Shell Oil Company Controlling and assessing pressure conditions during treatment of tar sands formations
EP2198118A1 (en) 2007-10-19 2010-06-23 Shell Internationale Research Maatschappij B.V. Irregular spacing of heat sources for treating hydrocarbon containing formations
CA2718767C (en) 2008-04-18 2016-09-06 Shell Internationale Research Maatschappij B.V. Using mines and tunnels for treating subsurface hydrocarbon containing formations
US20100101783A1 (en) 2008-10-13 2010-04-29 Vinegar Harold J Using self-regulating nuclear reactors in treating a subsurface formation
WO2010118315A1 (en) 2009-04-10 2010-10-14 Shell Oil Company Treatment methodologies for subsurface hydrocarbon containing formations
US9466896B2 (en) * 2009-10-09 2016-10-11 Shell Oil Company Parallelogram coupling joint for coupling insulated conductors
US8816203B2 (en) * 2009-10-09 2014-08-26 Shell Oil Company Compacted coupling joint for coupling insulated conductors
US8356935B2 (en) * 2009-10-09 2013-01-22 Shell Oil Company Methods for assessing a temperature in a subsurface formation
US8875788B2 (en) 2010-04-09 2014-11-04 Shell Oil Company Low temperature inductive heating of subsurface formations
US8939207B2 (en) 2010-04-09 2015-01-27 Shell Oil Company Insulated conductor heaters with semiconductor layers
US8701768B2 (en) 2010-04-09 2014-04-22 Shell Oil Company Methods for treating hydrocarbon formations
US8631866B2 (en) 2010-04-09 2014-01-21 Shell Oil Company Leak detection in circulated fluid systems for heating subsurface formations
US9127523B2 (en) 2010-04-09 2015-09-08 Shell Oil Company Barrier methods for use in subsurface hydrocarbon formations
US8967259B2 (en) 2010-04-09 2015-03-03 Shell Oil Company Helical winding of insulated conductor heaters for installation
US8857051B2 (en) 2010-10-08 2014-10-14 Shell Oil Company System and method for coupling lead-in conductor to insulated conductor
US8732946B2 (en) 2010-10-08 2014-05-27 Shell Oil Company Mechanical compaction of insulator for insulated conductor splices
US8943686B2 (en) 2010-10-08 2015-02-03 Shell Oil Company Compaction of electrical insulation for joining insulated conductors
US9016370B2 (en) 2011-04-08 2015-04-28 Shell Oil Company Partial solution mining of hydrocarbon containing layers prior to in situ heat treatment
EP2695247A4 (en) 2011-04-08 2015-09-16 Shell Int Research Systems for joining insulated conductors
WO2013001883A1 (en) * 2011-06-29 2013-01-03 ボッシュ株式会社 Ceramic-heater-type glow plug
JO3139B1 (en) 2011-10-07 2017-09-20 Shell Int Research Forming insulated conductors using a final reduction step after heat treating
US9309755B2 (en) 2011-10-07 2016-04-12 Shell Oil Company Thermal expansion accommodation for circulated fluid systems used to heat subsurface formations
CA2850756C (en) 2011-10-07 2019-09-03 Scott Vinh Nguyen Using dielectric properties of an insulated conductor in a subsurface formation to assess properties of the insulated conductor
JO3141B1 (en) 2011-10-07 2017-09-20 Shell Int Research Integral splice for insulated conductors
AU2012367347A1 (en) 2012-01-23 2014-08-28 Genie Ip B.V. Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation
JP5216947B1 (en) * 2012-10-19 2013-06-19 株式会社岡崎製作所 RTD element for cryogenic use
CN108219508B (en) * 2018-02-07 2021-03-30 大石桥市美尔镁制品有限公司 Moisture-proof material and preparation method and application thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280517A (en) * 1942-04-21 Electrical insulation of modified
US3201738A (en) * 1962-11-30 1965-08-17 Gen Electric Electrical heating element and insulation therefor

Also Published As

Publication number Publication date
DE1904873B2 (en) 1980-01-31
FR2001103A1 (en) 1969-09-26
DE1904873A1 (en) 1969-09-11
JPS49301B1 (en) 1974-01-07
SE347598B (en) 1972-08-07
US3477058A (en) 1969-11-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee