Probe spring of pipe corrosion detector

A technology for detectors and pipes, which is applied in weather resistance/light resistance/corrosion resistance, instruments, measuring devices, etc. It can solve the problems of incomplete detection data, affecting detection results, impacting pipe walls, etc., and achieves easy processing, not easy to damage, The effect of extending the service life
CN101319983BActive Publication Date: 2011-09-07BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2011-09-07

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Abstract

The invention relates to a probe spring of a pipeline corrosion detector which detects the metal loss degree of a steel pipeline on line and relates to the technical fields of measuring magnetic variables, measuring the linear sizes of thickness and pipeline systems. The invention is characterized in that the probe spring is an elastic ring made by polyurethane. The probe spring is an elastic ring approximating to a triangle or a trapezium made by the polyurethane; a front bevel edge on the advancing direction of the detector is thinner than a back bevel edge; the middle upper part of the back bevel edge bends a little to the front; besides, the upper end and the lower side of the back level edge are provided with fixing holes. As the flexible elasticity, the elastic ring is applied on the probe spring of the pipeline corrosion detector to lead the detector to be stable when passing through a weld bead and lead the probe not to be impacted, thus prolonging the service life of the probe; besides, the elastic ring is hard to be damaged, has long service life, is easily processed and is an ideal probe spring.
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Description

technical field

[0001] The invention relates to a pipeline corrosion detector probe spring for online detection of the metal loss degree of a steel pipeline, and relates to the technical fields of measuring magnetic variables, measuring linear dimensions of thickness and pipeline systems. Background technique

[0002] Although anti-corrosion measures have been taken in the construction of buried steel pipelines, due to various reasons, corrosion will gradually appear after the pipeline has been in operation for several years. In order to ensure the safe operation of the pipeline, it is usually necessary to carry out on-line corrosion detection on the pipeline regularly. At present, internal detection methods are used for pipeline corrosion detection, mainly including ultrasonic detection method and magnetic flux leakage detection method. Regardless of the method, detection is performed by many probes directly in contact with the inner wall of the pipe. Steel pipelines have...

Claims

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