JPS5558454A - Flaw detector for inside surface of pipe - Google Patents
Flaw detector for inside surface of pipeInfo
- Publication number
- JPS5558454A JPS5558454A JP13178178A JP13178178A JPS5558454A JP S5558454 A JPS5558454 A JP S5558454A JP 13178178 A JP13178178 A JP 13178178A JP 13178178 A JP13178178 A JP 13178178A JP S5558454 A JPS5558454 A JP S5558454A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- inside surface
- truck
- defect
- electromagnets
- 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
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE: To easily and efficiently perform flaw detection work, by mounting electromagnets and a magnetic powder sprinkling nozzle on a truck which moves in a pipe and by placing the pole ends of cores of the electromagnets near the inside surface of the pipe and opening the nozzle obliquely upward to the inside surface of the pipe.
CONSTITUTION: A truck 11 is inserted into an inspected steel pipe. A driving rod 32 is pulled to move the truck. Electromagnets 33 are energized and a magnetic- powder liquid is ejected up backward obliquely to the inside surface of the pipe from a sprinkling nozzle 30 through a hose 38 while the truck 11 is moving forth. Magnetic powder near a defect is attracted by leakage flux and laid in a pattern on the defect. The defect is detected in terms of the pattern.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13178178A JPS5558454A (en) | 1978-10-26 | 1978-10-26 | Flaw detector for inside surface of pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13178178A JPS5558454A (en) | 1978-10-26 | 1978-10-26 | Flaw detector for inside surface of pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5558454A true JPS5558454A (en) | 1980-05-01 |
Family
ID=15065992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13178178A Pending JPS5558454A (en) | 1978-10-26 | 1978-10-26 | Flaw detector for inside surface of pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5558454A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2413854A (en) * | 2004-05-07 | 2005-11-09 | Vetco Gray Inc | Internal riser inspection device and methods of use |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5149778A (en) * | 1974-10-25 | 1976-04-30 | Daikyo Sekyu Kk | KYUKEITAN KUNOTAN SHOSOCHI |
-
1978
- 1978-10-26 JP JP13178178A patent/JPS5558454A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5149778A (en) * | 1974-10-25 | 1976-04-30 | Daikyo Sekyu Kk | KYUKEITAN KUNOTAN SHOSOCHI |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7107863B2 (en) | 2002-04-05 | 2006-09-19 | Vetco Gray Inc. | Internal riser inspection system, apparatus and methods of using same |
GB2413854A (en) * | 2004-05-07 | 2005-11-09 | Vetco Gray Inc | Internal riser inspection device and methods of use |
GB2413854B (en) * | 2004-05-07 | 2008-12-03 | Vetco Gray Inc | Internal riser inspection device and methods of use |
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