Novel diameter measuring probe for pipeline detector

Abstract

The invention provides a novel diameter measuring probe for a pipeline detector. The novel diameter measuring probe comprises a probe assembly, a diameter measuring sensor, a base assembly, a torsional spring structure, a rotating shaft and a magnet; the probe assembly comprises a probe arm and a wear-resisting sheet, the magnet is embedded into a positioning hole, one end of the probe arm is connected with the wear-resisting sheet, the wear-resisting sheet is contacted with the inner wall of a pipeline, the other end is connected with a probe rotating shaft, the rotating shaft and the probe arm are relatively fixed, and the probe arm drives the rotating shaft to rotate when the wear-resisting sheet is contacted with pipeline deformation; the probe base is used for fixing the diameter measuring probe assembly on the detector in a pipeline, the diameter measuring sensor is fixed on one side of the probe base by using an epoxy resin pouring sealant, a sensor chip directly faces the center of the rotating shaft, and when the rotating shaft rotates, the magnet can be driven to rotate together, the diameter measuring sensor can collect the rotating angle, the pipeline deformation valuecan be calculated by combining the length of the probe arm. The diameter measuring probe is small in size, capable of achieving high-precision detection and recording pipeline deformation data and suitable for detection of pipelines before production and in-service pipelines.

Description

technical field [0001] The patent application of the present invention relates to the field of pipeline detection, in particular to a new type of caliper probe for pipeline detectors. Background technique [0002] Because the pipeline is buried underground and under the sea, after a long period of operation, it may be damaged or corroded by geological damage, corrosion, and its own defects after long-term operation, which may cause damage or corrosion to the inner wall of the pipeline and affect the safety of the pipeline operation. Therefore, it is necessary to conduct internal inspections on the pipeline regularly. [0003] At present, the pipe caliper generally uses the caliper disc structure for detection. The caliper disc is made of aluminum material, and the outer edge processing gap is divided into 8 petals. When encountering the deformed position, a collision occurs, and the diameter measuring disc undergoes plastic deformation, and the deformation of the pipeline is...

AI Technical Summary

Problems solved by technology

When encountering the deformed position, a collision occurs, and the diameter measuring disc undergoes plastic deformation, and the deformation of the pipeline is judged according to the deformation. This kind of diameter measuring device has low precision and does not have the function of data collection, so it cannot accurately judge the specific deformation of the pipeline and distorted position, thus reducing the accuracy of the assessment and increasing the risk of subsequent in-detector runs

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