Detector for measuring petroleum pipeline base metal defects
A technology for base metal and oil pipelines, which is applied in the field of detectors for measuring defects in the base metal of oil pipelines, can solve problems such as high cost, inapplicability, high detection environment requirements, and inability to detect internal cracks, so as to suppress pipeline safety accidents and offset direct The effect of coupled signals
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[0017]The present invention will be described in detail below with reference to the drawings and specific embodiments.
[0018]Referencefigure 1 , A detector for measuring base metal defects of petroleum pipelines, including 3 sets of probes (refer tofigure 1 In the dotted line frame is a group of probes), each group of probes includes 6 arrays, each array includes 1 transmitting coil T, 1 shielding coil B and 1 main receiving coil R, which is composed of shielding coil B and main receiving coil R The receiving coil system, that is, the 6 arrays of the first group of probes are T1,T1,T1,T1,T1,(The above symbol is marked as the probe group number, and the subscript is the array number, namely T1,Is the first array of the first set of probes). The normal direction of all coils is orthogonal to the defect; the winding directions of the transmitter coils T (3 transmitter coils) of the 3 sets of probes are the same; the winding direction of the main receiving coil R is the same as the trans...
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