JPS5667730A - Optical fiber cable for detecting oil leakage position - Google Patents

Optical fiber cable for detecting oil leakage position

Info

Publication number
JPS5667730A
JPS5667730A JP14353779A JP14353779A JPS5667730A JP S5667730 A JPS5667730 A JP S5667730A JP 14353779 A JP14353779 A JP 14353779A JP 14353779 A JP14353779 A JP 14353779A JP S5667730 A JPS5667730 A JP S5667730A
Authority
JP
Japan
Prior art keywords
oil
optical fiber
fiber cable
detecting
leakage position
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
JP14353779A
Other languages
Japanese (ja)
Inventor
Yasuto Karasawa
Masaya Tanaka
Morihiko Kawabe
Namio Kaneko
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP14353779A priority Critical patent/JPS5667730A/en
Publication of JPS5667730A publication Critical patent/JPS5667730A/en
Pending 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
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G01M3/047—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means with photo-electrical detection means, e.g. using optical fibres

Landscapes

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

Abstract

PURPOSE:To permit a simpler circuit constitution to readily, speedily and accurately detect the oil leakage position by encoding an optical fiber cable by marking. CONSTITUTION:An optical fiber cable 50 is formed by bundling oil-detecting elements 51-54 made of four optical fibers which have oil-detecting parts 51a-54a, shown by white, and masked parts 51b-54b not detecting oil within a given length L, the lengths of the oil-detecting parts and the masked parts being doubled successively in order to encode. One end 50c of the optical fiber cable 50 is connected to a projector 60, and the other end 50d to a light-receiving means 70. Amplifying the output signals of light-receiving elements 71-74 before adding them to a logical circuit 90 permits the detection of the conditions of the penetrating light quantity decreased by the attachment of oil to the oil-detecting elements 51-54, with each oil leakage position specified.
JP14353779A 1979-11-06 1979-11-06 Optical fiber cable for detecting oil leakage position Pending JPS5667730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14353779A JPS5667730A (en) 1979-11-06 1979-11-06 Optical fiber cable for detecting oil leakage position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14353779A JPS5667730A (en) 1979-11-06 1979-11-06 Optical fiber cable for detecting oil leakage position

Publications (1)

Publication Number Publication Date
JPS5667730A true JPS5667730A (en) 1981-06-08

Family

ID=15341045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14353779A Pending JPS5667730A (en) 1979-11-06 1979-11-06 Optical fiber cable for detecting oil leakage position

Country Status (1)

Country Link
JP (1) JPS5667730A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113329A (en) * 1980-12-29 1982-07-14 Osaka Gas Co Ltd Optical fiber sensor system
JPS63193342U (en) * 1987-05-30 1988-12-13
JPS63193341U (en) * 1987-05-30 1988-12-13

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113329A (en) * 1980-12-29 1982-07-14 Osaka Gas Co Ltd Optical fiber sensor system
JPS63193342U (en) * 1987-05-30 1988-12-13
JPS63193341U (en) * 1987-05-30 1988-12-13

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