JPS57521A - Water level measuring device of nuclear reactor - Google Patents

Water level measuring device of nuclear reactor

Info

Publication number
JPS57521A
JPS57521A JP7389680A JP7389680A JPS57521A JP S57521 A JPS57521 A JP S57521A JP 7389680 A JP7389680 A JP 7389680A JP 7389680 A JP7389680 A JP 7389680A JP S57521 A JPS57521 A JP S57521A
Authority
JP
Japan
Prior art keywords
gamma
ray
temp
detectors
heating elements
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.)
Pending
Application number
JP7389680A
Other languages
Japanese (ja)
Inventor
Eiji Seki
Ichiro Tai
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7389680A priority Critical patent/JPS57521A/en
Publication of JPS57521A publication Critical patent/JPS57521A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/288—X-rays; Gamma rays or other forms of ionising radiation

Abstract

PURPOSE:To make water levels measurable with high accuracy with simple construction by disposing gamma-ray heating elements consisting of gamma-ray absorbing materials disposed in multiplicity at prescribed intervals within a vessel, and measuring temp. differences of these gamma-ray heating elements. CONSTITUTION:A housing tube 3 having through-holes 6 provided at prescribed intervals gamma-ray heating elements 12 having temp. detectors and a gamma-ray detector guide tube 7 are inserted in the vertical direction in a nuclear reactor pressure vessel 1 contaning a core 2 therein, and the outputs of the respective temp. detectors are connected via cables 14 to a temp. measuring circuit 16. A gamma-ray detector is provided to the leading end of the cable driven by a driving mechanism 11, and this gamma-ray detector moves within the tube 7. The elements 12 having absorbed the gamma-rays released from the core 2 are cooled in the furnace water but the elements 12 existing on the outside of the water surface are difficult to be cooled and therefore if the temp. differences of the gamma-ray heating elements are measured with the temp. detectors, the position of the water level is measured and it is possible to measure gamma-ray intensity distributions as well with gamma-ray detectors 9.
JP7389680A 1980-06-02 1980-06-02 Water level measuring device of nuclear reactor Pending JPS57521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7389680A JPS57521A (en) 1980-06-02 1980-06-02 Water level measuring device of nuclear reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7389680A JPS57521A (en) 1980-06-02 1980-06-02 Water level measuring device of nuclear reactor

Publications (1)

Publication Number Publication Date
JPS57521A true JPS57521A (en) 1982-01-05

Family

ID=13531417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7389680A Pending JPS57521A (en) 1980-06-02 1980-06-02 Water level measuring device of nuclear reactor

Country Status (1)

Country Link
JP (1) JPS57521A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013104757A (en) * 2011-11-11 2013-05-30 Toshiba Corp Water level detection system and method
WO2013077349A1 (en) * 2011-11-22 2013-05-30 株式会社東芝 Reactor water level measuring system
JP2013124883A (en) * 2011-12-13 2013-06-24 Hitachi Ltd Reactor water level gauge
JP2013137236A (en) * 2011-12-28 2013-07-11 Toshiba Corp Water level measurement device
CN110057424A (en) * 2019-06-04 2019-07-26 南华大学 Air-cooled passive nuclear level sensing device and its measurement method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013104757A (en) * 2011-11-11 2013-05-30 Toshiba Corp Water level detection system and method
WO2013077349A1 (en) * 2011-11-22 2013-05-30 株式会社東芝 Reactor water level measuring system
JP2013108905A (en) * 2011-11-22 2013-06-06 Toshiba Corp Reactor water level instrumentation system
JP2013124883A (en) * 2011-12-13 2013-06-24 Hitachi Ltd Reactor water level gauge
JP2013137236A (en) * 2011-12-28 2013-07-11 Toshiba Corp Water level measurement device
CN110057424A (en) * 2019-06-04 2019-07-26 南华大学 Air-cooled passive nuclear level sensing device and its measurement method

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