JPS57198840A - Detecting device for leakage - Google Patents

Detecting device for leakage

Info

Publication number
JPS57198840A
JPS57198840A JP8307481A JP8307481A JPS57198840A JP S57198840 A JPS57198840 A JP S57198840A JP 8307481 A JP8307481 A JP 8307481A JP 8307481 A JP8307481 A JP 8307481A JP S57198840 A JPS57198840 A JP S57198840A
Authority
JP
Japan
Prior art keywords
temperature
main steam
detector
air
power supply
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.)
Granted
Application number
JP8307481A
Other languages
Japanese (ja)
Other versions
JPH0136569B2 (en
Inventor
Morihiko Ikehara
Shoji Sakurai
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 JP8307481A priority Critical patent/JPS57198840A/en
Publication of JPS57198840A publication Critical patent/JPS57198840A/en
Publication of JPH0136569B2 publication Critical patent/JPH0136569B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/002—Investigating fluid-tightness of structures by using thermal means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

PURPOSE:To prevent false detection of leadkage from the main steam pipe by copying with a sharp change in detected temperature at the time of disconnection of a power supply for an air regulator or the like which ventilates a main steam tunnel chamber of a nuclear power plant or the like. CONSTITUTION:A heat quantity released from the main steam pipe 2 into a main steam tunnel chamber 1 is made to flow out into the air by ventilation through ducts 5 and 6 which are connected to an air regulator 4 and the air, respectively. The temperatures on the inlet and outlet sides of each of the ducts 5 and 6 are detected by inlet outlet temperature detectors 20 and 21, respectively, and when the difference temperature exceeds a threshold value, a difference temperature detector 24 generates a detection signal for leakage of the pipe 2. When there happens the discontinuation of a power supply of the regulator 4 or the like, contacts LS5 and LS6 of a temperature detection controller 23 are turned OFF and ON respectively through the intermediary of a timer term relay R2 of a timer TM1 of an air regulator abnormality detector 22 to cope with a sharp change in temperature according to the detector 20 by an alternative temperature memorized in a virtual temperature signal generator 30. Thus, the detector 24 conducts no false detection when power supply for the air regulator or the like is discontinued, while detecting actual leakage without fail.
JP8307481A 1981-05-30 1981-05-30 Detecting device for leakage Granted JPS57198840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8307481A JPS57198840A (en) 1981-05-30 1981-05-30 Detecting device for leakage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8307481A JPS57198840A (en) 1981-05-30 1981-05-30 Detecting device for leakage

Publications (2)

Publication Number Publication Date
JPS57198840A true JPS57198840A (en) 1982-12-06
JPH0136569B2 JPH0136569B2 (en) 1989-08-01

Family

ID=13792025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8307481A Granted JPS57198840A (en) 1981-05-30 1981-05-30 Detecting device for leakage

Country Status (1)

Country Link
JP (1) JPS57198840A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012301A1 (en) * 1989-04-13 1990-10-18 Combustion Engineering, Inc. Quantifying isolation valve leakage
US10508966B2 (en) 2015-02-05 2019-12-17 Homeserve Plc Water flow analysis
US10704979B2 (en) 2015-01-07 2020-07-07 Homeserve Plc Flow detection device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549983A (en) * 1977-06-25 1979-01-25 Nippon Steel Corp Detecting method of internal leakage of fluid valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549983A (en) * 1977-06-25 1979-01-25 Nippon Steel Corp Detecting method of internal leakage of fluid valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012301A1 (en) * 1989-04-13 1990-10-18 Combustion Engineering, Inc. Quantifying isolation valve leakage
US10704979B2 (en) 2015-01-07 2020-07-07 Homeserve Plc Flow detection device
US10942080B2 (en) 2015-01-07 2021-03-09 Homeserve Plc Fluid flow detection apparatus
US11209333B2 (en) 2015-01-07 2021-12-28 Homeserve Plc Flow detection device
US10508966B2 (en) 2015-02-05 2019-12-17 Homeserve Plc Water flow analysis

Also Published As

Publication number Publication date
JPH0136569B2 (en) 1989-08-01

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