JPS557661A - Measuring system for underground pipe line - Google Patents

Measuring system for underground pipe line

Info

Publication number
JPS557661A
JPS557661A JP8081078A JP8081078A JPS557661A JP S557661 A JPS557661 A JP S557661A JP 8081078 A JP8081078 A JP 8081078A JP 8081078 A JP8081078 A JP 8081078A JP S557661 A JPS557661 A JP S557661A
Authority
JP
Japan
Prior art keywords
ground
oscillator
pipe line
plastic tube
nozzle
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
JP8081078A
Other languages
Japanese (ja)
Inventor
Kazutoshi Nakao
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8081078A priority Critical patent/JPS557661A/en
Publication of JPS557661A publication Critical patent/JPS557661A/en
Pending legal-status Critical Current

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  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To simply the surely form the signal circuit, by using plastic tubes having conductive material layer.
CONSTITUTION: The plastic tube 2 laminating the conductive foil 2' on the surface is contained in the housing 8 with flat folded manner, the both ends are fixed at the end through the inner hole of the nozzle 5 of cylindrical shape connected to the air compressor 7, and they are inversely fixed with the stop ring 11. Further, after opposing the tip of the nozzle 5 in the pipe line 1 of insulating material, laied under- ground, air is fed from the air compressor 7, the plastic tube 2 is rolled out by pressing the inverted part A to reach the part A to the another end of the man- hole 15 to form the conductor path, and the both ends are connected respectively to the oscillator 3 and ground with the clips 12, 12'. Thus, when high frequency signal is delevired from the oscillator 3, signal current flows in the closed loop circuit consisting of the oscillator 3, plastic tube 2, and ground. The electromagnetic waves produced are caught with the receiver 4 through the leakage on ground to enable to measure the location of the pipe line 1.
COPYRIGHT: (C)1980,JPO&Japio
JP8081078A 1978-07-03 1978-07-03 Measuring system for underground pipe line Pending JPS557661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8081078A JPS557661A (en) 1978-07-03 1978-07-03 Measuring system for underground pipe line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8081078A JPS557661A (en) 1978-07-03 1978-07-03 Measuring system for underground pipe line

Publications (1)

Publication Number Publication Date
JPS557661A true JPS557661A (en) 1980-01-19

Family

ID=13728815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8081078A Pending JPS557661A (en) 1978-07-03 1978-07-03 Measuring system for underground pipe line

Country Status (1)

Country Link
JP (1) JPS557661A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS633934A (en) * 1986-06-23 1988-01-08 Ashimori Ind Co Ltd Method for lining non-metallic pipe line
WO1996018884A1 (en) * 1994-12-16 1996-06-20 Tokyo Gas Co., Ltd. Electromagnetic inspection of elements of piping

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS633934A (en) * 1986-06-23 1988-01-08 Ashimori Ind Co Ltd Method for lining non-metallic pipe line
WO1996018884A1 (en) * 1994-12-16 1996-06-20 Tokyo Gas Co., Ltd. Electromagnetic inspection of elements of piping

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