JPS57521A - Water level measuring device of nuclear reactor - Google Patents
Water level measuring device of nuclear reactorInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013077349A1 (en) * | 2011-11-22 | 2013-05-30 | 株式会社東芝 | Reactor water level measuring system |
JP2013104757A (en) * | 2011-11-11 | 2013-05-30 | Toshiba Corp | Water level detection system and method |
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 |
-
1980
- 1980-06-02 JP JP7389680A patent/JPS57521A/en active Pending
Cited By (6)
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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