CA2571893C - Appareil et methode d'inspection de structure lineaire - Google Patents
Appareil et methode d'inspection de structure lineaire Download PDFInfo
- Publication number
- CA2571893C CA2571893C CA2571893A CA2571893A CA2571893C CA 2571893 C CA2571893 C CA 2571893C CA 2571893 A CA2571893 A CA 2571893A CA 2571893 A CA2571893 A CA 2571893A CA 2571893 C CA2571893 C CA 2571893C
- Authority
- CA
- Canada
- Prior art keywords
- sensors
- magnetic
- pig
- poles
- field generator
- 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.)
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Links
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
L'invention porte sur un appareil destiné à détecter des anomalies dans un objet long, conducteur de l'électricité, devant être inspecté. L'objet peut être une canalisation ou un autre tube creux. L'appareil peut avoir un générateur de champ magnétique et un réseau de capteurs espacés autour du générateur de champ. Lorsqu'un mouvement relatif dans la direction longitudinale se produit entre l'appareil et l'objet devant être inspecté, le champ magnétique mobile, ou flux, passé du générateur de champ dans l'objet devant être inspecté peut tendre à amener des courants de Foucault à circuler dans l'objet. Les capteurs peuvent être espacés à la fois axialement et périphériquement pour permettre une variation du flux magnétique, ou une divergence de courants de Foucault, devant être détectée en tant que fonction de l'un ou l'autre, ou des deux, d'une position axiale par rapport au front d'onde du champ magnétique (ou, de façon réellement équivalente, tout autre donnée telle que le plan radial du milieu du générateur de champ), et d'une position périphérique autour de la périphérie de l'appareil telle que mesurée à partir d'une donnée angulaire. Un calcul de post-traitement peut ensuite tendre à permettre à des inférences d'être tirées au sujet de l'emplacement, de la taille, de la forme et peut-être de la nature, d'anomalies dans un objet. Les capteurs, et peut-être tout le générateur de champ, peuvent être maintenus à une distance de sécurité de l'objet devant être inspecté, comme par un boîtier scellé de façon étanche tel qu'il peut protéger les capteurs et réduire le besoin pour et le coût de l'entretien. Le générateur de champ peut comprendre deux pôles primaires de même nature, maintenus dans une orientation dos à dos sans contact, et peut comprendre des cercles magnétiques secondaires placés pour polariser le flux du circuit magnétique primaire en une forme plus concentrée par rapport à l'objet devant être inspecté.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2571893A CA2571893C (fr) | 2006-12-21 | 2006-12-21 | Appareil et methode d'inspection de structure lineaire |
| CA2757488A CA2757488C (fr) | 2006-12-21 | 2006-12-21 | Appareil et methode d'inspection de structure lineaire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2571893A CA2571893C (fr) | 2006-12-21 | 2006-12-21 | Appareil et methode d'inspection de structure lineaire |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2757488A Division CA2757488C (fr) | 2006-12-21 | 2006-12-21 | Appareil et methode d'inspection de structure lineaire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2571893A1 CA2571893A1 (fr) | 2008-06-21 |
| CA2571893C true CA2571893C (fr) | 2014-02-11 |
Family
ID=39537618
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2757488A Active CA2757488C (fr) | 2006-12-21 | 2006-12-21 | Appareil et methode d'inspection de structure lineaire |
| CA2571893A Active CA2571893C (fr) | 2006-12-21 | 2006-12-21 | Appareil et methode d'inspection de structure lineaire |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2757488A Active CA2757488C (fr) | 2006-12-21 | 2006-12-21 | Appareil et methode d'inspection de structure lineaire |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2757488C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3108804A1 (fr) * | 2018-08-08 | 2020-02-13 | Pure Technologies Ltd. | Procede et appareil de detection des defauts dans un tube metallique |
-
2006
- 2006-12-21 CA CA2757488A patent/CA2757488C/fr active Active
- 2006-12-21 CA CA2571893A patent/CA2571893C/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2757488A1 (fr) | 2008-06-21 |
| CA2757488C (fr) | 2013-02-26 |
| CA2571893A1 (fr) | 2008-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |