JPS557661A - Measuring system for underground pipe line - Google Patents
Measuring system for underground pipe lineInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1978
- 1978-07-03 JP JP8081078A patent/JPS557661A/en active Pending
Cited By (2)
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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