JPS5729920A - Leakage gas detecting method for lng pipeline - Google Patents

Leakage gas detecting method for lng pipeline

Info

Publication number
JPS5729920A
JPS5729920A JP10434180A JP10434180A JPS5729920A JP S5729920 A JPS5729920 A JP S5729920A JP 10434180 A JP10434180 A JP 10434180A JP 10434180 A JP10434180 A JP 10434180A JP S5729920 A JPS5729920 A JP S5729920A
Authority
JP
Japan
Prior art keywords
pipe body
gas detecting
leakage
keeping material
swiftly
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
JP10434180A
Other languages
Japanese (ja)
Inventor
Atsushi Hara
Akira Hagio
Osamu Suzuki
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP10434180A priority Critical patent/JPS5729920A/en
Publication of JPS5729920A publication Critical patent/JPS5729920A/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
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators

Landscapes

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

Abstract

PURPOSE:To detect leakage swiftly, by installing a gas detecting sensor in a cool keeping material or its proximity, and diffusing leakage gas from a pipe body in the axial direction of the pipe body by a groove formed in the axial direction of the pipe body. CONSTITUTION:An LPG pipe P is connected and extended by an expansion joint part 5 each other. In the circumference of this expansion joint part 5 are provided a cool keeping material 2 and a leakage preventive layer 3, and in the cool keeping material 2 is installed an inflammable gas detecting sensor 6. For instance, in case when LNG has leaked from a pipe body 1, gasified leakage LNG goes into a groove 4 of the cool keeping material 2, which has been provided in the pipe axial direction of the pipe body 1, moves swiftly in the longitudinal direction of the pipe body 1 through this groove 4, immediately attains around the inflammable gas detecting sensor 6, and an alarm is raised swiftly.
JP10434180A 1980-07-31 1980-07-31 Leakage gas detecting method for lng pipeline Pending JPS5729920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10434180A JPS5729920A (en) 1980-07-31 1980-07-31 Leakage gas detecting method for lng pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10434180A JPS5729920A (en) 1980-07-31 1980-07-31 Leakage gas detecting method for lng pipeline

Publications (1)

Publication Number Publication Date
JPS5729920A true JPS5729920A (en) 1982-02-18

Family

ID=14378208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10434180A Pending JPS5729920A (en) 1980-07-31 1980-07-31 Leakage gas detecting method for lng pipeline

Country Status (1)

Country Link
JP (1) JPS5729920A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101074337B1 (en) 2011-03-07 2011-10-17 김영식 Water leakage sensing cover preventing water leakage sensor from malfunction by intake of outer air and dew condensation
CN109268691A (en) * 2017-07-17 2019-01-25 宝武炭材料科技有限公司 System for automatically prejudging leakage of volatile chemical medium pipeline
CN112113147A (en) * 2020-09-07 2020-12-22 孙永林 Gas leakage detection ring capable of automatically changing light from convex at joint of natural gas pipeline

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101074337B1 (en) 2011-03-07 2011-10-17 김영식 Water leakage sensing cover preventing water leakage sensor from malfunction by intake of outer air and dew condensation
CN109268691A (en) * 2017-07-17 2019-01-25 宝武炭材料科技有限公司 System for automatically prejudging leakage of volatile chemical medium pipeline
CN109268691B (en) * 2017-07-17 2020-05-05 宝武炭材料科技有限公司 System for automatically prejudging leakage of volatile chemical medium pipeline
CN112113147A (en) * 2020-09-07 2020-12-22 孙永林 Gas leakage detection ring capable of automatically changing light from convex at joint of natural gas pipeline

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