Device and method for detecting ovality and diameter of large-diameter spheroidal graphite cast pipe

Abstract

The invention discloses a large-diameter spheroidal graphite cast pipe ovality and diameter detection device and a detection method thereof, and belongs to the technical field of spheroidal graphite cast pipe diameter measurement. The device comprises a fixing support and a sensor assembly, the sensor assembly is assembled on a support body of the fixing support, the sensor assembly is composed of a first sensor and a second sensor, and the first sensor and the second sensor are arranged in parallel at an interval; the ductile iron pipe is placed between the measurement ranges of both the first sensor and the second sensor. The cast pipe detection range can be expanded, all cast pipe models at present are covered, the detection precision of the sensor assembly is higher than that of a caliper and a measuring tool, full detection is achieved, the diameter and ovality are calculated through software according to data detected and collected by the sensor assembly, production is fed back in real time, and a quality report is generated. Unqualified products are processed through background data, the maximum outer circle and the minimum outer circle of the cast pipe are found out in time and fed back to a rounding station, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of diameter measurement of ductile iron pipes, and more particularly, to a large-diameter ductile iron pipe ovality and diameter detection device and a detection method thereof. Background technique [0002] my country's ductile iron pipe industry started in the early 1990s and developed rapidly with the strong support of China Urban Water Supply Association. After nearly 40 years of practical use, its safety and practicability have been generally recognized by the water supply industry. Since my country is a country with a shortage of water resources, there are more than 600 water-deficient cities and more than 200 seriously water-deficient cities. [0003] With the large-scale use of ductile iron pipes in water supply and gas transmission, the external dimensions, manufacturing accuracy and product quality of ductile iron pipes are required to be higher. The traditional ruler and caliper are used for manu...

AI Technical Summary

Problems solved by technology

[0006] At present, the conventional through-type LED sensors or laser sensors in the market have a limited range of diameters for detecting circles, and LED sensors can only detect The outer circle size; the laser sensor can only detect the maximum The size of the outer circle cannot cover our DN80-DN2200 cast pipe products, and the detection task cannot be completed

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