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GB1360659A - Heating device - Google Patents

Heating device

Info

Publication number
GB1360659A
GB1360659A GB5715571A GB5715571A GB1360659A GB 1360659 A GB1360659 A GB 1360659A GB 5715571 A GB5715571 A GB 5715571A GB 5715571 A GB5715571 A GB 5715571A GB 1360659 A GB1360659 A GB 1360659A
Authority
GB
United Kingdom
Prior art keywords
arc
gas
cathode
current flow
anode
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
GB5715571A
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.)
British Titan Ltd
Original Assignee
British Titan Ltd
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 British Titan Ltd filed Critical British Titan Ltd
Priority to GB5715571A priority Critical patent/GB1360659A/en
Priority to DE2255483A priority patent/DE2255483C2/en
Priority to US308503A priority patent/US3869593A/en
Publication of GB1360659A publication Critical patent/GB1360659A/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
    • H05B7/00—Heating by electric discharge
    • H05B7/18—Heating by arc discharge
    • H05B7/185—Heating gases for arc discharge
    • 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
    • H05B7/00—Heating by electric discharge
    • H05B7/005—Electrical diagrams

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Arc Welding Control (AREA)
  • Furnace Details (AREA)

Abstract

1360659 Starting arc in arc welding apparatus BRITISH TITAN Ltd 13 Oct 1972 [9 Dec 1971] 57155/71 Heading H2H [Also in Division H5] An arc heating device comprises main electrodes 1, 2 and an intermediate electrode 3 insulated from the main electrodes by insulating rings 4, 5. Gas is introduced via inlet 7, 8, 11, 12. On starting the device an initial arc is struck between cathode 2 and the electrode 3. Gas, e.g. oxygen is then introduced into the chamber 1 and the arc is transferred for a high proportion of the time to the anode 1. When the current flow in the intermediate electrode has fallen to a low value, e.g. less than 200 m.a., a control circuit arranges to cut off the intermediate electrode when the current flow next falls to zero so stabilizing the arc between anode and cathode. Gas is then also introduced into chamber 6. Fig. 2 indicates a suitable control circuit comprising a trigger circuit 23 for energizing a thyristor 13, the trigger circuit having a stabilized D.C. power supply 24, and a mercury switch 2 and a leakage resistor 26. A current flow sensing device 18 is provided to activate thryistor cut-off and protection against excess current and voltage peaks in the thyristor is provided respectively by choke 17 and the circuit comprising resistors 20, 21 and capacitor 22. The mercury switch may be solenoid or manually operated in response to the current flow sensing device. The thysistor is mounted on a cooled block 14 using water containing a nucleating agent. The anode 1 may have a conical bore having a cone angle of 1-30 degrees and the arc may be rotated by a magnetic field (0À01-4À0 tacho.) from a coil around the cathode. The cathode may be a solid rod. A field may be provided around the conical bore to increase the gas enthalpy. Helical and/or tangential gas flow may be used and list of electrode materials is provided. The device may be used for welding, cutting, or producing high velocity gas flows or supplying heat to chemical reactions, e.g. oxidation of metal halides (including silicon) to metal oxides, formation of metal carbides by reactions between metal halide and a source of carbon usually in the vapour phase.
GB5715571A 1971-12-09 1971-12-09 Heating device Expired GB1360659A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5715571A GB1360659A (en) 1971-12-09 1971-12-09 Heating device
DE2255483A DE2255483C2 (en) 1971-12-09 1972-11-13 Device for heating gases by means of an electric arc
US308503A US3869593A (en) 1971-12-09 1972-11-21 Heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5715571A GB1360659A (en) 1971-12-09 1971-12-09 Heating device

Publications (1)

Publication Number Publication Date
GB1360659A true GB1360659A (en) 1974-07-17

Family

ID=10478505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5715571A Expired GB1360659A (en) 1971-12-09 1971-12-09 Heating device

Country Status (3)

Country Link
US (1) US3869593A (en)
DE (1) DE2255483C2 (en)
GB (1) GB1360659A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535225A (en) * 1984-03-12 1985-08-13 Westinghouse Electric Corp. High power arc heater

Families Citing this family (18)

* Cited by examiner, † Cited by third party
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US4042802A (en) * 1975-08-11 1977-08-16 Westinghouse Electric Corporation Three-phase arc heater
USRE34806E (en) * 1980-11-25 1994-12-13 Celestech, Inc. Magnetoplasmadynamic processor, applications thereof and methods
EP0087523A1 (en) * 1982-02-22 1983-09-07 ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC) Société Anonyme Equipment for the heating of a gas fluid by means of an electric arc
BE898951A (en) * 1984-02-17 1984-08-17 Centre Rech Metallurgique ELECTRIC ARC PLASMA TORCH.
US4649257A (en) * 1986-05-06 1987-03-10 The Perkin-Elmer Corporation Gas distribution ring for plasma gun
US4674683A (en) * 1986-05-06 1987-06-23 The Perkin-Elmer Corporation Plasma flame spray gun method and apparatus with adjustable ratio of radial and tangential plasma gas flow
US4990732A (en) * 1987-03-19 1991-02-05 Dudko Daniil A Discharge device for magnetic-pulse working and welding of metals
CA1330831C (en) * 1988-09-13 1994-07-19 Ashley Grant Doolette Electric arc generating device
US4970433A (en) * 1988-10-12 1990-11-13 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for tuned unsteady flow purging of high pulse rate spark gaps
US5257500A (en) * 1992-07-27 1993-11-02 General Electric Company Aircraft engine ignition system
JP3291800B2 (en) 1992-12-29 2002-06-10 石川島播磨重工業株式会社 Method for forming cooling channel of constrictor disk
US5374802A (en) * 1992-12-31 1994-12-20 Osram Sylvania Inc. Vortex arc generator and method of controlling the length of the arc
US5296670A (en) * 1992-12-31 1994-03-22 Osram Sylvania Inc. DC plasma arc generator with erosion control and method of operation
US5530220A (en) * 1994-04-11 1996-06-25 Thermal Dynamics Corporation Plasma torch arc transfer circuit
FR2734445B1 (en) * 1995-05-19 1997-07-18 Aerospatiale CONTINUOUS CURRENT ARC PLASMA TORCH, ESPECIALLY INTENDED FOR OBTAINING A CHEMICAL BODY BY DECOMPOSITION OF A PLASMAGEN GAS
CA2397756A1 (en) * 2000-01-18 2001-07-16 Scientific Utilization, Inc. Three-phase alternating current plasma generator having adjustable, extended life electrodes and multiple stream injector rings
US6781087B1 (en) 2000-01-18 2004-08-24 Scientific Utilization, Inc. Three-phase plasma generator having adjustable electrodes
CN107884392B (en) * 2017-10-24 2020-09-18 中国航天空气动力技术研究院 Arc heater air flow enthalpy value spectral measurement system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344256A (en) * 1967-09-26 Method for producing arcs
US2922869A (en) * 1958-07-07 1960-01-26 Plasmadyne Corp Plasma stream apparatus and methods
US2941063A (en) * 1958-09-15 1960-06-14 Plasmadyne Corp Plasma-jet torch apparatus and method relating to increasing the life of the back electrode
NL284064A (en) * 1961-10-06
US3297899A (en) * 1964-01-24 1967-01-10 Thermal Dynamics Corp Electric arc torches having a variably constricting element in the arc passageway
US3309550A (en) * 1964-03-06 1967-03-14 Westinghouse Electric Corp Multiple annular electrode gas arc heater with a magnetic arc spinner
NL6502885A (en) * 1964-03-07 1965-09-08
US3360988A (en) * 1966-11-22 1968-01-02 Nasa Usa Electric arc apparatus
US3538378A (en) * 1967-06-13 1970-11-03 Westinghouse Electric Corp Electrical circuit apparatus for detecting when the current which normally produces an arc between electrodes takes a different path
US3654513A (en) * 1969-06-30 1972-04-04 Westinghouse Electric Corp Arc heater apparatus and method for producing a diffuse arc discharge
US3745321A (en) * 1971-07-28 1973-07-10 L Persits Method of control over operating conditions of an apparatus for plasma-arc treatment of articles and an apparatus for plasma-arc treatment
US3760145A (en) * 1971-12-13 1973-09-18 Panelera International Inc Short gap electric arc heater with opposing gas swirl
US3760151A (en) * 1972-08-11 1973-09-18 Westinghouse Electric Corp Arc detecting material admission apparatus for use in combination with an electric arc heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535225A (en) * 1984-03-12 1985-08-13 Westinghouse Electric Corp. High power arc heater

Also Published As

Publication number Publication date
US3869593A (en) 1975-03-04
DE2255483C2 (en) 1984-02-02
DE2255483A1 (en) 1973-06-14

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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