A chain-type rapid detection probe for surface defects based on acfm
A detection probe and chain technology, applied in the field of detection probes, can solve problems such as low detection efficiency and limit the development of ACFM technology, and achieve the effects of improving detection accuracy, flexibility and detection efficiency
Active Publication Date: 2019-08-09
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
Conventional ACFM single-type probes can realize plane and riser detection, but the detection efficiency is low, which limits the development of ACFM technology
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[0015] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.
[0016] Such as figure 1 As shown, the ACFM-based surface defect chain type rapid detection probe of the present invention includes several single-section detection probes 1 and several shafts 2, and all single-section detection probes 1 are connected to a chain type detection probe by rotation of the shaft 2;
[0017] Such as figure 2 , image 3 As shown, each single detection probe 1 includes a detection probe body 11, a partition (not shown), an upper cover 12, a lower cover 13, two supports 14 and two rollers 15, the detection probe The main body 11 is a hollow structure, and the interior of the detection probe body 11 is fixed with a vertical partition, so that ...
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The invention relates to an ACFM-based chained rapid detection probe for surface defects. The ACFM-based chained rapid detection probe for surface defects is characterized by comprising a plurality of single-section detection probes and a plurality of shafts; all the single-section detection probes are connected in a rotating mode through the shafts to form the chained detection probe; each single-section detection probe comprises a hollow detection probe body, a partition plate, an upper cover plate, a lower cover plate, two supports and two rolling wheels, wherein the partition plate is longitudinally arranged inside so that the interior of the detection probe body can be partitioned into two independent spaces used for containing U-shaped magnetic cores, the upper cover plate is fixedly arranged at the top of the detection probe body, the lower cover plate is fixedly arranged at the bottom of the detection probe body, a plurality of detection coils are arranged on the inner side of the lower cover plate, the two supports are fixedly arranged on the two sides of the detection probe body respectively, and the two rolling wheels are connected to the two supports respectively. The ACFM-based chained rapid detection probe for surface defects is of a chained structure, the chain sections are flexibly connected and can rotate, and the ACFM-based chained rapid detection probe for surface defects can be widely applied to detecting surface defects of tubular or planar bodies of different diameters.
Description
technical field [0001] The invention relates to a detection probe, in particular to an ACFM-based chain-type rapid detection probe for surface defects. Background technique [0002] The drilling riser is the weakest and most important connection between the subsea wellhead and the drilling ship. With the development of ocean drilling in deep water and ultra-deep water, drilling riser accidents will bring huge losses to ocean drilling. [0003] In addition, Alternating Current Field Measurement (Alternating Current Field Measurement) has a large number of applications and a certain range of reliability for both pressure vessels and offshore platform steel structures. Conventional ACFM single-type probes can realize plane and riser detection, but the detection efficiency is low, which limits the development of ACFM technology. Contents of the invention [0004] In view of the above problems, the object of the present invention is to provide an ACFM-based fast detection prob...
Claims
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IPC IPC(8): G01N27/83
Inventor 许亮斌蒋世全陈国明盛磊祥李伟周建良贾廷亮
Owner CHINA NAT OFFSHORE OIL CORP