A detection method based on the detection device for the wall thickness and wall thickness difference of drug-type cover

Abstract

The invention discloses a detection method based on a detection device for the wall thickness and wall thickness difference of a drug-type cover, and relates to the technical field of wall thickness detection. The detection method includes: 1) starting the rotation of the turntable, and the rotation of the turntable drives the rotation of the medicine-type cover mold; the laser range finder collects the distance between the turntable and the medicine-type cover mold when the turntable rotates at a preset angle, and rotates the turntable 360° to measure the distance with the laser. The data collected by the distance meter is used as the first group of data; 2) the drug-type cover to be tested is placed on the drug-type cover mold, and step 1 is repeated, and the collected data is used as the second group of data; the collection point in step 2) is the same as The same in step 1); 3) compare the second set of data with the same data of the collection points in the first set of data, and calculate the difference between the corresponding points to be the wall thickness of the collection point; calculate the difference between the wall thicknesses The value is the wall thickness difference; the original non-contact measurement is changed to indirect measurement, which improves the detection accuracy and reduces the scratches on the surface of the medicine cover.

Description

technical field [0001] The invention relates to the technical field of wall thickness detection, in particular to a detection method based on a detection device for the wall thickness and wall thickness difference of a drug-type cover. Background technique [0002] Perforating charge is a kind of well completion equipment used to establish effective channels in the wellbore and oil layer. Its quality will greatly affect the oil and gas production of production wells. Metal powder liner is the key component of perforating charge. The symmetry and uniformity of mass distribution are very critical to the perforating elastic performance. The actual processed liner inevitably has a wall thickness difference, and the quality of the liner has a significant impact on the formed jet. The wall thickness does not refer to The wall thickness of the drug-shaped cover along the circumferential direction changes, but the wall thickness that the drug-shaped cover should have in a certain cr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of low detection efficiency and direct contact measurement that cause scratches on the surface of the drug-type cover in the prior art, and provide a detection method based on the detection device of the wall thickness and wall thickness difference of the drug-type cover

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