JPS5763433A - Detecting method for abnormal state in transport pipe - Google Patents

Detecting method for abnormal state in transport pipe

Info

Publication number
JPS5763433A
JPS5763433A JP13905080A JP13905080A JPS5763433A JP S5763433 A JPS5763433 A JP S5763433A JP 13905080 A JP13905080 A JP 13905080A JP 13905080 A JP13905080 A JP 13905080A JP S5763433 A JPS5763433 A JP S5763433A
Authority
JP
Japan
Prior art keywords
vacuum degree
variation
pipe
substance
abnormal state
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
JP13905080A
Other languages
Japanese (ja)
Inventor
Shizuya Kawabe
Yukio Hiramatsu
Toshiyuki Ikemiya
Takenobu Higashimoto
Kimitoshi Aoto
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP13905080A priority Critical patent/JPS5763433A/en
Publication of JPS5763433A publication Critical patent/JPS5763433A/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
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/283—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes for double-walled pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks

Landscapes

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

Abstract

PURPOSE:To detect abnormal state of a transport pipe rapidly, by a method wherein a gap is constituted between the pipe and an anticorrosive layer, a given vacuum degree is held, and variation of the vacuum degree or leakage of substance is detected. CONSTITUTION:A gap 9 constituted between a transport pipe 5 and an anticorrosive layer 6 is held in a given vacuum degree. If the pipe is damaged and a transported substance leaks out of the pipe, variation of the vacuum degree of leakage of fluid is led to detectors 12-14. Variation of the vacuum degree based on damage of the anticorrosive layer 6, impression of abnormal external force, or invasion of external substance is also led to the detectors 12-14. The detectors 12-14 which detect the transported substance and the external substance corresponding to variation of the vacuum degree of the gap generate alarm according to the detected abnormal state and may have a transmitter or a suction device 17 to obtain vacuum state. A connecting box 10 of the detector is connected through a conduit 11 to the detector 12.
JP13905080A 1980-10-04 1980-10-04 Detecting method for abnormal state in transport pipe Pending JPS5763433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13905080A JPS5763433A (en) 1980-10-04 1980-10-04 Detecting method for abnormal state in transport pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13905080A JPS5763433A (en) 1980-10-04 1980-10-04 Detecting method for abnormal state in transport pipe

Publications (1)

Publication Number Publication Date
JPS5763433A true JPS5763433A (en) 1982-04-16

Family

ID=15236297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13905080A Pending JPS5763433A (en) 1980-10-04 1980-10-04 Detecting method for abnormal state in transport pipe

Country Status (1)

Country Link
JP (1) JPS5763433A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889538B2 (en) * 2003-10-02 2005-05-10 Varco I/P, Inc. Monitoring system for leak prevention and detection
WO2025225112A1 (en) * 2024-04-26 2025-10-30 日本特殊陶業株式会社 Detection device and detection method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825583A (en) * 1971-08-04 1973-04-03
JPS49107288A (en) * 1973-02-13 1974-10-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825583A (en) * 1971-08-04 1973-04-03
JPS49107288A (en) * 1973-02-13 1974-10-11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889538B2 (en) * 2003-10-02 2005-05-10 Varco I/P, Inc. Monitoring system for leak prevention and detection
WO2025225112A1 (en) * 2024-04-26 2025-10-30 日本特殊陶業株式会社 Detection device and detection method

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