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GB1369658A - Systems for detecting thermal overloads in a rotary member - Google Patents

Systems for detecting thermal overloads in a rotary member

Info

Publication number
GB1369658A
GB1369658A GB5447371A GB5447371A GB1369658A GB 1369658 A GB1369658 A GB 1369658A GB 5447371 A GB5447371 A GB 5447371A GB 5447371 A GB5447371 A GB 5447371A GB 1369658 A GB1369658 A GB 1369658A
Authority
GB
United Kingdom
Prior art keywords
magnet
magnetic
motor
detector
rotor
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
GB5447371A
Inventor
Andre Linsig
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.)
Alstom SA
Original Assignee
Unelec SA
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 to FR7030589A priority Critical patent/FR2102756A5/en
Priority to DE2156399A priority patent/DE2156399C3/en
Application filed by Unelec SA filed Critical Unelec SA
Priority to GB5447371A priority patent/GB1369658A/en
Priority to BE775711A priority patent/BE775711A/en
Priority to JP47009539A priority patent/JPS4883301A/ja
Publication of GB1369658A publication Critical patent/GB1369658A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
    • G01K7/38—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils the variations of temperature influencing the magnetic permeability
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/04—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
    • G01K13/08—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Protection Of Generators And Motors (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

1369658 Protective devices for dynamoelectric machines UNELEC 23 Nov 1971 54473/71 Headings H2A and H2K In combination with a rotatable member, e.g. a rotor 1 of a squirrel cage electric motor a system for detecting thermal overloads of said member comprises a magnet 5 carried by the member and a stationary magnetic field detector 7 located to be responsive to the field from the magnet during rotation of the member and a member 6 of a magnetic material of which the permeability is temperature dependent and of which the Curie point corresponds to an overload temperature to be detected and arranged on the rotatable member so that it lies between the magnet and the field detector when the magnet pases the detector during rotation of the rotatable member. The magnet is a permanent bar magnet and the magnetic member 6 is secured to an end thereof. Alternatively the magnetic member 6 may be secured to the periphery of the rotor outside of the magnetic circuit of the rotary machine on a conductor such as the short circuiting ring 4 of a squirrel cage motor, a coil head of a wound rotor, a synchronous motor inductor or the collector plate of a D.C. motor. The signal emitted by the detector (Hall effect or magnetic resistor) operates an alarm and/or triggers the supply switch for the motor.
GB5447371A 1970-08-20 1971-11-23 Systems for detecting thermal overloads in a rotary member Expired GB1369658A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7030589A FR2102756A5 (en) 1970-08-20 1970-08-20 DEVICE FOR DETECTION OF THERMAL OVERLOADS OF A ROTATING ORGAN.
DE2156399A DE2156399C3 (en) 1970-08-20 1971-11-12 Thermal overload protection for electrical machines
GB5447371A GB1369658A (en) 1970-08-20 1971-11-23 Systems for detecting thermal overloads in a rotary member
BE775711A BE775711A (en) 1970-08-20 1971-11-23 DEVICE FOR DETECTION OF THERMAL OVERLOADS OF A ROTATING ORGAN.
JP47009539A JPS4883301A (en) 1970-08-20 1972-01-27

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR7030589A FR2102756A5 (en) 1970-08-20 1970-08-20 DEVICE FOR DETECTION OF THERMAL OVERLOADS OF A ROTATING ORGAN.
DE2156399A DE2156399C3 (en) 1970-08-20 1971-11-12 Thermal overload protection for electrical machines
GB5447371A GB1369658A (en) 1970-08-20 1971-11-23 Systems for detecting thermal overloads in a rotary member
BE775711A BE775711A (en) 1970-08-20 1971-11-23 DEVICE FOR DETECTION OF THERMAL OVERLOADS OF A ROTATING ORGAN.
JP47009539A JPS4883301A (en) 1970-08-20 1972-01-27

Publications (1)

Publication Number Publication Date
GB1369658A true GB1369658A (en) 1974-10-09

Family

ID=43303379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5447371A Expired GB1369658A (en) 1970-08-20 1971-11-23 Systems for detecting thermal overloads in a rotary member

Country Status (5)

Country Link
JP (1) JPS4883301A (en)
BE (1) BE775711A (en)
DE (1) DE2156399C3 (en)
FR (1) FR2102756A5 (en)
GB (1) GB1369658A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071350A3 (en) * 1981-07-28 1985-01-09 United Kingdom Atomic Energy Authority Temperature threshold detectors
GB2261518A (en) * 1991-11-15 1993-05-19 Heidelberger Druckmasch Ag Apparatus for measuring at least one state variable of a brushless direct-current motor
GB2261517A (en) * 1991-11-15 1993-05-19 Heidelberger Druckmasch Ag Apparatus for measuring at least one state variable of a rotating body
EP1595489A1 (en) * 2004-05-12 2005-11-16 Askoll Holding S.r.l. Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing-machines
US8256954B2 (en) 2008-04-09 2012-09-04 Agilent Technologies, Inc. Contactless device for measuring operating parameters of rotors of high-speed rotary machines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020100798A1 (en) 2020-01-15 2021-07-15 Noris Automation Gmbh Arrangement for non-contact magnetic temperature measurement on a moving or temporarily non-moving or fixed machine component, method for calibrating such an arrangement and method for performing non-contact magnetic temperature measurement on a moving, temporarily non-moving or fixed machine component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959475C (en) * 1952-12-19 1957-03-07 Siemens Ag Thermal release, especially for overcurrent protection of electrical machines
CH466428A (en) * 1967-12-04 1968-12-15 Bbc Brown Boveri & Cie Slip-ring-free rotor temperature measuring device for an electrical machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071350A3 (en) * 1981-07-28 1985-01-09 United Kingdom Atomic Energy Authority Temperature threshold detectors
US4576781A (en) * 1981-07-28 1986-03-18 United Kingdom Atomic Energy Authority Temperature threshold detectors
GB2261518A (en) * 1991-11-15 1993-05-19 Heidelberger Druckmasch Ag Apparatus for measuring at least one state variable of a brushless direct-current motor
GB2261517A (en) * 1991-11-15 1993-05-19 Heidelberger Druckmasch Ag Apparatus for measuring at least one state variable of a rotating body
GB2261518B (en) * 1991-11-15 1995-03-01 Heidelberger Druckmasch Ag Apparatus for measuring at least one state variable of a brushless direct-current motor
US5418451A (en) * 1991-11-15 1995-05-23 Heidelberger Druckmaschinen Ag Apparatus for measuring at least one state variable of a brushless direct-current motor
EP1595489A1 (en) * 2004-05-12 2005-11-16 Askoll Holding S.r.l. Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing-machines
US7607895B2 (en) 2004-05-12 2009-10-27 Askoll Holding S.R.L. Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing machines
US8256954B2 (en) 2008-04-09 2012-09-04 Agilent Technologies, Inc. Contactless device for measuring operating parameters of rotors of high-speed rotary machines

Also Published As

Publication number Publication date
DE2156399C3 (en) 1981-05-14
DE2156399A1 (en) 1973-05-17
DE2156399B2 (en) 1980-10-02
BE775711A (en) 1972-05-23
FR2102756A5 (en) 1972-04-07
JPS4883301A (en) 1973-11-07

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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