JPS56137114A - Water level gauge - Google Patents

Water level gauge

Info

Publication number
JPS56137114A
JPS56137114A JP3970180A JP3970180A JPS56137114A JP S56137114 A JPS56137114 A JP S56137114A JP 3970180 A JP3970180 A JP 3970180A JP 3970180 A JP3970180 A JP 3970180A JP S56137114 A JPS56137114 A JP S56137114A
Authority
JP
Japan
Prior art keywords
tube
water
water level
external
reference head
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
JP3970180A
Other languages
Japanese (ja)
Inventor
Nobuhiko Inai
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 JP3970180A priority Critical patent/JPS56137114A/en
Publication of JPS56137114A publication Critical patent/JPS56137114A/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
    • G01F23/14—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 measurement of pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

PURPOSE:To prevent boiling of water in the reference head tube to measure the water level accurately, by giving an heat insulating structure to the reference head tube and the pressure conducting tube. CONSTITUTION:External parts of pressure conducting tube 4 and reference head tube 7 and the external part of coupling tube 12 in the position corresponding to the inside of storage vessel 2 are coated with external tube 13 concentrically airtightly to have a dual-pipe construction, and external tube 13 has gas exhausted by vacuum pump 14 to form a vacuum heat insulating layer. Since condensed steam forms fixed reference water surface 9 in condensing tank 8, water level 11 is detected by measuring the differential pressure between reference water head 10 and nuclear reactor pressure vessel 1 by differential pressure converter 6. Even if the temperature in storage vessel 2 becomes high due to the accident of loss of the cooling material, water in reference head tube 7 is not boiled in the decompression process, and thus, water level 11 is measured accurately.
JP3970180A 1980-03-28 1980-03-28 Water level gauge Pending JPS56137114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3970180A JPS56137114A (en) 1980-03-28 1980-03-28 Water level gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3970180A JPS56137114A (en) 1980-03-28 1980-03-28 Water level gauge

Publications (1)

Publication Number Publication Date
JPS56137114A true JPS56137114A (en) 1981-10-26

Family

ID=12560310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3970180A Pending JPS56137114A (en) 1980-03-28 1980-03-28 Water level gauge

Country Status (1)

Country Link
JP (1) JPS56137114A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765945A (en) * 1985-11-25 1988-08-23 Kraftwerk Union Aktiengesellschaft Method and apparatus for measuring the filling level in a reactor pressure vessel of a boiling-water reactor
US5533074A (en) * 1995-05-02 1996-07-02 Mansell; Timothy E. Nuclear reactor coolant level monitoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765945A (en) * 1985-11-25 1988-08-23 Kraftwerk Union Aktiengesellschaft Method and apparatus for measuring the filling level in a reactor pressure vessel of a boiling-water reactor
US5533074A (en) * 1995-05-02 1996-07-02 Mansell; Timothy E. Nuclear reactor coolant level monitoring system
WO1996036970A1 (en) * 1995-05-02 1996-11-21 General Physics Corporation Nuclear reactor coolant level monitoring system

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