JPS57158522A - Detecting apparatus of water level of pressure vessel of nuclear reactor - Google Patents

Detecting apparatus of water level of pressure vessel of nuclear reactor

Info

Publication number
JPS57158522A
JPS57158522A JP56043965A JP4396581A JPS57158522A JP S57158522 A JPS57158522 A JP S57158522A JP 56043965 A JP56043965 A JP 56043965A JP 4396581 A JP4396581 A JP 4396581A JP S57158522 A JPS57158522 A JP S57158522A
Authority
JP
Japan
Prior art keywords
water level
pressure vessel
nuclear reactor
sheath
thermocouple
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
JP56043965A
Other languages
Japanese (ja)
Inventor
Saichi Imaizumi
Toru Hasegawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56043965A priority Critical patent/JPS57158522A/en
Publication of JPS57158522A publication Critical patent/JPS57158522A/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

Landscapes

  • Physics & Mathematics (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 detect a water level in the pressure vessel of a nuclear reactor accurately, by covering the outer circumference of a heating unit with a sheath having a thermocouple and moreover, providing a water level detector having its outer circumfrence protected by a protective tube to the pressure vessel of the nuclear reactor. CONSTITUTION:A sheath 37 is provided around an electrically insulating material 36 having a coil-shaped heating unit 35 and a thermocouple 38 is embedded on its surface and moreover, water level detectors 34a-34d consisting of a protective tube 39 fitted onto the outside of the sheath 37 are provided to the pressure vessel of a nuclear reactor through a measuring nozzle. Plural thermocouples 38 are provided in the axis direction of the detector 34 and are set on a display device through cables. In thus constituted water level detector, the water level is measured by detecting a part lowering electromotive force of the thermo couple because heat generated by the unit 35 is deprived only at a part where the water level detector is in contact with water 50 when the water flows into the pressure vessel of the reactor, and the electromotive force of the thermocouple provided at this part is dropped down suddenly.
JP56043965A 1981-03-27 1981-03-27 Detecting apparatus of water level of pressure vessel of nuclear reactor Pending JPS57158522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56043965A JPS57158522A (en) 1981-03-27 1981-03-27 Detecting apparatus of water level of pressure vessel of nuclear reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56043965A JPS57158522A (en) 1981-03-27 1981-03-27 Detecting apparatus of water level of pressure vessel of nuclear reactor

Publications (1)

Publication Number Publication Date
JPS57158522A true JPS57158522A (en) 1982-09-30

Family

ID=12678414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56043965A Pending JPS57158522A (en) 1981-03-27 1981-03-27 Detecting apparatus of water level of pressure vessel of nuclear reactor

Country Status (1)

Country Link
JP (1) JPS57158522A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590797A (en) * 1983-09-29 1986-05-27 Commissariat A L'energie Atomique Thermal system for measuring liquid levels
US5044764A (en) * 1989-03-08 1991-09-03 Snow Brand Milk Products Co., Ltd. Method and apparatus for fluid state determination
JPH04332897A (en) * 1990-12-10 1992-11-19 General Electric Co <Ge> Monitor for level in container of voilling water type nuclear reactor
US5394749A (en) * 1993-02-25 1995-03-07 Hughes Aircraft Company Method and apparatus for detecting the position of fluid-fluid interfaces
US5730026A (en) * 1995-03-31 1998-03-24 Josef Maatuk Microprocessor-based liquid sensor and ice detector
WO2000019173A2 (en) * 1998-10-01 2000-04-06 Imaging & Sensing Technology Corporation Analog liquid level sensor
US6546796B2 (en) 2001-03-15 2003-04-15 Therm-O-Disc, Incorporated Liquid level sensor
JP2013007721A (en) * 2011-06-27 2013-01-10 Toshiba Corp Water level temperature detector of nuclear power plant
CN102982853A (en) * 2012-12-03 2013-03-20 中国核动力研究设计院 Water level detector for reactor core and water level measuring method of detector
JP2013104750A (en) * 2011-11-11 2013-05-30 Toshiba Corp Alternative measurement device, alternative measurement system, and alternative measurement method
JP2013104749A (en) * 2011-11-11 2013-05-30 Toshiba Corp Water level and temperature measurement facility for nuclear reactor containment vessel
JP2013140100A (en) * 2012-01-05 2013-07-18 Hitachi-Ge Nuclear Energy Ltd Reactor water level and temperature measuring device
RU2502964C2 (en) * 2009-04-02 2013-12-27 Арефа Гмбх Sealing device for device for measurement of filling level in discharge reservoir of nuclear technical plant
JP2015132549A (en) * 2014-01-14 2015-07-23 株式会社東芝 Measuring apparatus mounting arrangement for spent fuel pool

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590797A (en) * 1983-09-29 1986-05-27 Commissariat A L'energie Atomique Thermal system for measuring liquid levels
US5044764A (en) * 1989-03-08 1991-09-03 Snow Brand Milk Products Co., Ltd. Method and apparatus for fluid state determination
JPH04332897A (en) * 1990-12-10 1992-11-19 General Electric Co <Ge> Monitor for level in container of voilling water type nuclear reactor
US5394749A (en) * 1993-02-25 1995-03-07 Hughes Aircraft Company Method and apparatus for detecting the position of fluid-fluid interfaces
US5730026A (en) * 1995-03-31 1998-03-24 Josef Maatuk Microprocessor-based liquid sensor and ice detector
US5908985A (en) * 1995-03-31 1999-06-01 Maatuk; Josef Microprocessor-based liquid sensor and ice detector
WO2000019173A2 (en) * 1998-10-01 2000-04-06 Imaging & Sensing Technology Corporation Analog liquid level sensor
WO2000019173A3 (en) * 1998-10-01 2000-07-20 Imaging & Sensing Tech Corp Analog liquid level sensor
US6202486B1 (en) * 1998-10-01 2001-03-20 Imaging & Sensing Technology Corporation Analog liquid level sensor
CZ299476B6 (en) * 1998-10-01 2008-08-06 Imaging & Sensing Technology Corporation Analog liquid level sensor
US6862932B2 (en) 2001-03-15 2005-03-08 Therm-O-Disc, Incorporated Liquid level sensor
US6546796B2 (en) 2001-03-15 2003-04-15 Therm-O-Disc, Incorporated Liquid level sensor
RU2502964C2 (en) * 2009-04-02 2013-12-27 Арефа Гмбх Sealing device for device for measurement of filling level in discharge reservoir of nuclear technical plant
US8806970B2 (en) 2009-04-02 2014-08-19 Areva Gmbh Sealing device for a device for measuring the fill level in a fluid container
JP2013007721A (en) * 2011-06-27 2013-01-10 Toshiba Corp Water level temperature detector of nuclear power plant
JP2013104750A (en) * 2011-11-11 2013-05-30 Toshiba Corp Alternative measurement device, alternative measurement system, and alternative measurement method
JP2013104749A (en) * 2011-11-11 2013-05-30 Toshiba Corp Water level and temperature measurement facility for nuclear reactor containment vessel
JP2013140100A (en) * 2012-01-05 2013-07-18 Hitachi-Ge Nuclear Energy Ltd Reactor water level and temperature measuring device
CN102982853A (en) * 2012-12-03 2013-03-20 中国核动力研究设计院 Water level detector for reactor core and water level measuring method of detector
JP2015132549A (en) * 2014-01-14 2015-07-23 株式会社東芝 Measuring apparatus mounting arrangement for spent fuel pool

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