WO2013110410A3 - Apparatus and method for measuring the position of a displaceable control rod - Google Patents

Apparatus and method for measuring the position of a displaceable control rod Download PDF

Info

Publication number
WO2013110410A3
WO2013110410A3 PCT/EP2012/075700 EP2012075700W WO2013110410A3 WO 2013110410 A3 WO2013110410 A3 WO 2013110410A3 EP 2012075700 W EP2012075700 W EP 2012075700W WO 2013110410 A3 WO2013110410 A3 WO 2013110410A3
Authority
WO
WIPO (PCT)
Prior art keywords
control rod
secondary coils
manner
measuring
coil groups
Prior art date
Application number
PCT/EP2012/075700
Other languages
German (de)
French (fr)
Other versions
WO2013110410A2 (en
Inventor
Naeel MUHAMAD ALI
Markus Reymann
Original Assignee
Areva Gmbh
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 Areva Gmbh filed Critical Areva Gmbh
Publication of WO2013110410A2 publication Critical patent/WO2013110410A2/en
Publication of WO2013110410A3 publication Critical patent/WO2013110410A3/en

Links

Classifications

    • 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
    • G01D5/204—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 by influencing the mutual induction between two or more coils
    • G01D5/2046—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 by influencing the mutual induction between two or more coils by a movable ferromagnetic element, e.g. a core
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (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

The invention relates to an apparatus (0) for measuring the position of a displaceable control rod, having a plurality of secondary coils (S'1-S'47) which are arranged behind one another along a displacement path and are inductively excited by at least one primary coil (1), wherein one or more secondary coils (S'1-S'47) are respectively combined to form at least two coil groups in such a manner that a position signal (P'1-P'3) generated with the aid of the respective coil group is increased or reduced in a step-like manner if the control rod is pushed past the secondary coils (S'1-S'47). Such an apparatus (0), on the one hand, is intended to require the smallest possible number of measuring lines (M0, M1-M'3) and, on the other hand, is intended to determine the control rod position with a high resolution with high operational safety and reliability. For this purpose, the arrangement and connection of the secondary coils (S'1-S'47) are selected according to the invention in such a manner that all of the position signals (P'1-P'3) from all coil groups can be used to unambiguously determine the instantaneous position of the control rod, and at least one of the coil groups has at least two secondary coils (S'1-S'47) which are connected to one another in such a manner that the associated position signal (P'1-P'3) assumes at least three discrete signal levels (N'0-N'3) as the control rod is pushed forwards. The invention also relates to a corresponding method.
PCT/EP2012/075700 2012-01-27 2012-12-17 Apparatus and method for measuring the position of a displaceable control rod WO2013110410A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012001509.7 2012-01-27
DE201210001509 DE102012001509A1 (en) 2012-01-27 2012-01-27 Device and method for measuring the position of a displaceable control rod

Publications (2)

Publication Number Publication Date
WO2013110410A2 WO2013110410A2 (en) 2013-08-01
WO2013110410A3 true WO2013110410A3 (en) 2013-09-19

Family

ID=47557034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/075700 WO2013110410A2 (en) 2012-01-27 2012-12-17 Apparatus and method for measuring the position of a displaceable control rod

Country Status (2)

Country Link
DE (1) DE102012001509A1 (en)
WO (1) WO2013110410A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112599264B (en) * 2020-12-05 2023-02-14 核电运行研究(上海)有限公司 Method for accurately positioning position of control rod
WO2023000130A1 (en) * 2021-07-19 2023-01-26 中广核研究院有限公司 Control rod position detection system and device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308282B1 (en) * 1987-08-28 1991-07-24 Merlin Gerin Non-contact position sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170754A (en) * 1975-10-16 1979-10-09 Westinghouse Electric Corp. Phase encoded digital position probe assembly
FR2763123B1 (en) * 1997-05-07 1999-06-18 Electricite De France METHOD AND APPARATUS FOR ADJUSTING A MEASURING DEVICE USING AN ELECTRIC SENSOR
GB0606055D0 (en) * 2006-03-25 2006-05-03 Scient Generics Ltd Non-contact wheel encoder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308282B1 (en) * 1987-08-28 1991-07-24 Merlin Gerin Non-contact position sensor

Also Published As

Publication number Publication date
DE102012001509A1 (en) 2013-08-01
WO2013110410A2 (en) 2013-08-01

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