JPH0299382U - - Google Patents
Info
- Publication number
- JPH0299382U JPH0299382U JP782389U JP782389U JPH0299382U JP H0299382 U JPH0299382 U JP H0299382U JP 782389 U JP782389 U JP 782389U JP 782389 U JP782389 U JP 782389U JP H0299382 U JPH0299382 U JP H0299382U
- Authority
- JP
- Japan
- Prior art keywords
- circumferential weld
- pipe inspection
- inspection pig
- threshold value
- determining whether
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000007689 inspection Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
Description
第１図は本考案の一実施例を示す説明図、第２
図は信号処理回路のブロツク図、第３図は従来技
術を示す説明図、第４図はフローチヤート図であ
る。
１……ピグ本体、２……シールカツプ、４……
マイク、１２……アナログコンパレーター。
Fig. 1 is an explanatory diagram showing one embodiment of the present invention;
3 is a block diagram of a signal processing circuit, FIG. 3 is an explanatory diagram showing a conventional technique, and FIG. 4 is a flowchart. 1...Pig body, 2...Seal cup, 4...
Microphone, 12...Analog comparator.
Claims (1)
を検知する手段と、該検知信号が予め定めたいき
値を超えることを判定する手段とからなる管内検
査ピグ用円周溶接部検出装置。 A circumferential weld detection device for a pipe inspection pig, comprising means for detecting sound emitted by the pipe inspection pig when it passes the circumferential weld, and means for determining whether the detection signal exceeds a predetermined threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP782389U JPH0299382U (en) | 1989-01-26 | 1989-01-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP782389U JPH0299382U (en) | 1989-01-26 | 1989-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0299382U true JPH0299382U (en) | 1990-08-08 |
Family
ID=31213163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP782389U Pending JPH0299382U (en) | 1989-01-26 | 1989-01-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0299382U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59183316A (en) * | 1983-03-23 | 1984-10-18 | ブリテイツシユ・ガス・コ−ポレ−シヨン | Method and device for persuing pipeline-pig |
| JPS623685A (en) * | 1985-06-28 | 1987-01-09 | Nippon Kokan Kk <Nkk> | Detector for tube welding position |
-
1989
- 1989-01-26 JP JP782389U patent/JPH0299382U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59183316A (en) * | 1983-03-23 | 1984-10-18 | ブリテイツシユ・ガス・コ−ポレ−シヨン | Method and device for persuing pipeline-pig |
| JPS623685A (en) * | 1985-06-28 | 1987-01-09 | Nippon Kokan Kk <Nkk> | Detector for tube welding position |