JPS57182677A - Pipe joint for detecting concealed pipe - Google Patents

Pipe joint for detecting concealed pipe

Info

Publication number
JPS57182677A
JPS57182677A JP56067796A JP6779681A JPS57182677A JP S57182677 A JPS57182677 A JP S57182677A JP 56067796 A JP56067796 A JP 56067796A JP 6779681 A JP6779681 A JP 6779681A JP S57182677 A JPS57182677 A JP S57182677A
Authority
JP
Japan
Prior art keywords
pipe
ring
corrosion
high frequency
metallic
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
JP56067796A
Other languages
Japanese (ja)
Other versions
JPS645656B2 (en
Inventor
Masakazu Morioka
Masaya Kinugawa
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas 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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP56067796A priority Critical patent/JPS57182677A/en
Publication of JPS57182677A publication Critical patent/JPS57182677A/en
Publication of JPS645656B2 publication Critical patent/JPS645656B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • 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
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/01—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Joints With Sleeves (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Abstract

PURPOSE:To prevent corrosion and also to detect a metallic pipe from the ground, by selecting the electric resistance of a conductive protective ring to a value which obstructs a corrosion current, and leads a high frequency current for detecting a buried pipe. CONSTITUTION:An insertion port 13 of a metallic pipe 2 is inserted into a receiving port of a metallic pipe 1, and between them, a ring-like lock ring 15, a protective ring 16 and a sealing member 17 are placed and are clamped to a flange 11 by a bolt 21 and a nut 22 through a junk ring 18. The respective parts are brought to electric insulating coating, but since the ring 16 has a projection on its surface, the metallic pipes 1, 2 conduct electrically. The ring 16 consists of a conductive organic high polymer material, and its electric resistance is selected to a value which does not make a corrosion current flow but makes a high frequency current for detecting a buries pipe flow. Its volume resistance is set to 20-3,000OMEGAcm. Therefore, corrosion is prevented, and a buries pipe can be detected by a high frequency current.
JP56067796A 1981-05-06 1981-05-06 Pipe joint for detecting concealed pipe Granted JPS57182677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56067796A JPS57182677A (en) 1981-05-06 1981-05-06 Pipe joint for detecting concealed pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56067796A JPS57182677A (en) 1981-05-06 1981-05-06 Pipe joint for detecting concealed pipe

Publications (2)

Publication Number Publication Date
JPS57182677A true JPS57182677A (en) 1982-11-10
JPS645656B2 JPS645656B2 (en) 1989-01-31

Family

ID=13355268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56067796A Granted JPS57182677A (en) 1981-05-06 1981-05-06 Pipe joint for detecting concealed pipe

Country Status (1)

Country Link
JP (1) JPS57182677A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104476U (en) * 1982-01-08 1983-07-15 日本工業ゴム株式会社 Packing ring for piping
JPS60103778U (en) * 1983-12-21 1985-07-15 株式会社クボタ Corrosion-proof metal conduit
JPS6167490U (en) * 1984-10-09 1986-05-09
KR100849283B1 (en) 2007-01-05 2008-07-29 조동국 Butterfly valve
JP2015143524A (en) * 2013-12-25 2015-08-06 コスモ工機株式会社 Pipe joint
JP2017116006A (en) * 2015-12-25 2017-06-29 株式会社水研 Non-bolt joint structure of fluid pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104476U (en) * 1982-01-08 1983-07-15 日本工業ゴム株式会社 Packing ring for piping
JPS60103778U (en) * 1983-12-21 1985-07-15 株式会社クボタ Corrosion-proof metal conduit
JPS6167490U (en) * 1984-10-09 1986-05-09
KR100849283B1 (en) 2007-01-05 2008-07-29 조동국 Butterfly valve
JP2015143524A (en) * 2013-12-25 2015-08-06 コスモ工機株式会社 Pipe joint
JP2020024045A (en) * 2013-12-25 2020-02-13 コスモ工機株式会社 Pipe joint
JP2017116006A (en) * 2015-12-25 2017-06-29 株式会社水研 Non-bolt joint structure of fluid pipe

Also Published As

Publication number Publication date
JPS645656B2 (en) 1989-01-31

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