GB2000298A - Electromagnetic position indicator - Google Patents

Electromagnetic position indicator

Info

Publication number
GB2000298A
GB2000298A GB7827401A GB7827401A GB2000298A GB 2000298 A GB2000298 A GB 2000298A GB 7827401 A GB7827401 A GB 7827401A GB 7827401 A GB7827401 A GB 7827401A GB 2000298 A GB2000298 A GB 2000298A
Authority
GB
United Kingdom
Prior art keywords
position indicator
secondary winding
core member
electromagnetic position
core
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.)
Granted
Application number
GB7827401A
Other versions
GB2000298B (en
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of GB2000298A publication Critical patent/GB2000298A/en
Application granted granted Critical
Publication of GB2000298B publication Critical patent/GB2000298B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
    • G21C17/12—Sensitive element forming part of control element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/225—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
    • G01D5/2258—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils by a movable ferromagnetic element, e.g. core
    • G01D5/2266—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils by a movable ferromagnetic element, e.g. core specially adapted circuits therefor
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

An electromagnetic position indicator to indicate continuously the position of a linearly movable member, such as a nuclear reactor control rod, is operatively connected to a magnetic core member 12 which varies the inductive coupling between primary 14 and secondary windings. The secondary winding comprises pairs of series-opposed coils 20-36 spaced apart in the direction of movement of the core. A ponderation resistor is connected to each pair, R0-Rn, and a processing circuit receives voltages from the secondary winding terminals AB and AC and delivers a signal proportional to a resistance ratio indicating the position of the core member. <IMAGE>
GB7827401A 1977-06-21 1978-06-20 Electromagnetic position indicator Expired GB2000298B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7719892A FR2395566A1 (en) 1977-06-21 1977-06-21 CONTROL BAR POSITION SENSOR FOR NUCLEAR REACTOR

Publications (2)

Publication Number Publication Date
GB2000298A true GB2000298A (en) 1979-01-04
GB2000298B GB2000298B (en) 1982-02-03

Family

ID=9192698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827401A Expired GB2000298B (en) 1977-06-21 1978-06-20 Electromagnetic position indicator

Country Status (7)

Country Link
JP (1) JPS548545A (en)
BE (1) BE868276A (en)
DE (1) DE2826917A1 (en)
ES (1) ES470922A1 (en)
FR (1) FR2395566A1 (en)
GB (1) GB2000298B (en)
IT (1) IT1109561B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190507A (en) * 1986-05-16 1987-11-18 Kollmorgen Corp Inductive sensor or transducer for use in hostile environments
GB2278405B (en) * 1993-05-25 1996-09-11 Ian Ross Walker Control system for movable magnetic member
US9804286B2 (en) 2014-06-20 2017-10-31 Rolls-Royce Power Engineering Plc Method of optimising the output of a sensor for indicating the relative location of a mettalic object
US10060763B2 (en) 2014-06-20 2018-08-28 Rolls-Royce Power Engineering Plc Sensor assembly for measuring the relative position of a control rod connected to a lead screw within a nuclear reactor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752580Y2 (en) * 1988-09-19 1995-11-29 多摩川精機株式会社 Linear sensor
CN104697427B (en) * 2014-12-12 2017-06-09 中国航空工业集团公司北京长城计量测试技术研究所 A kind of differential transformer type inductance displacement sensor being made up of multiple coils

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1407530A (en) * 1973-01-03 1975-09-24 Westinghouse Electric Corp Position indication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1407530A (en) * 1973-01-03 1975-09-24 Westinghouse Electric Corp Position indication system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190507A (en) * 1986-05-16 1987-11-18 Kollmorgen Corp Inductive sensor or transducer for use in hostile environments
US4887465A (en) * 1986-05-16 1989-12-19 Kollmorgen Corporation Transducers for hostile environments
GB2190507B (en) * 1986-05-16 1990-08-29 Kollmorgen Corp Transducers for hostile environments
GB2278405B (en) * 1993-05-25 1996-09-11 Ian Ross Walker Control system for movable magnetic member
US9804286B2 (en) 2014-06-20 2017-10-31 Rolls-Royce Power Engineering Plc Method of optimising the output of a sensor for indicating the relative location of a mettalic object
US10060763B2 (en) 2014-06-20 2018-08-28 Rolls-Royce Power Engineering Plc Sensor assembly for measuring the relative position of a control rod connected to a lead screw within a nuclear reactor

Also Published As

Publication number Publication date
JPS548545A (en) 1979-01-22
GB2000298B (en) 1982-02-03
FR2395566B1 (en) 1980-11-21
BE868276A (en) 1978-10-16
IT1109561B (en) 1985-12-23
FR2395566A1 (en) 1979-01-19
DE2826917A1 (en) 1979-01-18
ES470922A1 (en) 1979-04-01
IT7868400A0 (en) 1978-06-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee