Measuring device and measuring method for out-of-roundness of a boiler pressure vessel shell

By combining a telescopic frame with a self-centering clamping and rotational measurement device with a distance measuring device, the difficulty of measuring the out-of-roundness of boiler pressure vessel cylinders is solved, achieving efficient and accurate full-circumference diameter measurement, applicable to boiler pressure vessels with different inner diameters.

CN116448003BActive Publication Date: 2026-06-19FUSHUN SPECIAL EQUIP SUPERVISION & INSPECTION INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUSHUN SPECIAL EQUIP SUPERVISION & INSPECTION INST
Filing Date
2023-03-27
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In the existing technology, it is difficult to measure the out-of-roundness of the boiler pressure vessel shell, and it is not convenient to obtain the full circumference diameter data, resulting in inaccurate measurement and low efficiency.

Method used

Design a measuring device that includes a telescopic frame and a distance measuring device. Through self-centering clamping and rotation measurement, ensure that the rotation axis of the distance measuring device coincides with the axis of the boiler pressure vessel. Adopt detachable telescopic components to adapt to different inner diameters, and combine laser or ultrasonic distance measuring instruments to perform full-circumference measurement.

Benefits of technology

It achieves high-precision and rapid measurement of boiler pressure vessel cylinder out-of-roundness, improving measurement efficiency and flexibility, and is applicable to boiler pressure vessels with different inner diameters.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a measuring device and method for measuring the out-of-roundness of boiler pressure vessel cylinders, comprising a telescopic frame and a ranging device. The ends of the first, second, and third telescopic sections are extendable, so that the extension axes of the second and third telescopic sections coincide with the chord length of the boiler pressure vessel, which is equal in length and parallel to the chord length. This, in turn, causes the rotation axis of the ranging device to coincide with the axis of the boiler pressure vessel. The advantages are that by determining the center and then rotating to measure the full circumference diameter, the measurement results are highly accurate. Simultaneously, the rotational measurement method allows for rapid measurement in a short time, thus improving measurement efficiency. Since the telescopic frame can internally clamp the boiler pressure vessel, it has excellent adaptability to boiler pressure vessels with different inner diameters, thereby greatly improving the flexibility of the measuring device for the out-of-roundness of boiler pressure vessel cylinders.
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