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

Active Publication Date: 2011-09-07
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, the springs used in probes are compression springs wound by spring steel wires. If the elastic force is small, the probe will not be pressed tightly, which will affect the detection effect; Large enough to hit the pipe wall, it will damage the probe after a long time
At the same time, due to the bouncing of the probe, the detection points near the weld will be missed, resulting in incomplete detection data

Method used

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  • Probe spring of pipe corrosion detector
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  • Probe spring of pipe corrosion detector

Examples

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Embodiment

[0012] Embodiment. This example is a probe spring of a Φ1016mm high-definition pipeline magnetic flux leakage corrosion detector, and this example illustrates the specific implementation of the present invention. The shape of this ring is as figure 2 , image 3 As shown, it is similar to a triangular wine bottle shape, the main dimensions are: width 56.9mm, height 100mm, thickness 12mm; the front outer bevel is R146mm, the front inner bevel is R139mm, the outer edge of the middle and lower part of the rear bevel is R136mm, The inner edge is R128mm, bent from the 68mm distance from the bottom edge to the outer edge R146mm, the inner edge R134mm; the front and rear beveled edges meet at the top, the inner edge is R98mm, and the outer edge is R104.7mm; The diameter of the outer end of the hole is 4.5mm, and the diameter of the inner end is 6.2mm; the two holes at the bottom of the elastic ring are equal diameter holes with a diameter of 3.4mm. Install this elastic ring on the p...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/04G01N27/85
Inventor 周燕萍李久春李育忠金莹杨博霖田爱民
Owner BC P INC CHINA NAT PETROLEUM CORP
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