High-precision imaging and detecting device for detecting small defect of pipeline by helical magnetic matrix
US10338160B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2017 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Feb 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high-precision imaging and detecting device for detecting a small defect of a pipeline by a helical magnetic matrix. The device includes: a helical excitation module including a helical excitation coil; a magnetic matrix detection module, disposed at an inner side of the helical excitation coil and including at least one magnetic sensor group arranged at intervals along an axial direction of the helical excitation coil, group including a plurality of magnetic sensors evenly spaced apart and arranged along a circumferential direction of the helical excitation coil, and the magnetic sensor being configured to detect an induction magnetic field of the pipeline; a signal processing module, connected with the magnetic matrix detection module, and configured to receive, process and output an induction magnetic field signal of the pipeline detected by the magnetic sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.