Wall thickness detecting system for high-temperature inner barrel

Abstract

The present invention provides a high-temperature inner cylinder wall thickness detecting system, which comprises an ultrasonic transducing head that is used for obtaining the thickness signal of the inner cylinder wall, a signal transmission and channel switching device that is connected with the ultrasonic transducing head and is used for transmitting the signal and for switching the channels, an ultrasonic inspiring and receiving measuring device that is connected with the signal transmission and channel switching device and is used for sending an inspiring signal and for receiving the thickness signal of the inner cylinder wall. The detecting system can be used for measuring the thickness of the inner wall of the high-temperature chimney in the fire plant, and is provided with a plurality of switching channels and can simultaneously measure the thickness of different target substances.

Description

technical field [0001] The invention relates to a thickness detection system, and in particular to an inner cylinder wall thickness detection system applied in a high temperature environment. Background technique [0002] Ultrasonic thickness measurement is based on the principle of ultrasonic pulse reflection. When the ultrasonic pulse emitted by the probe passes through the object to be measured and reaches the interface of the material, the pulse is reflected back to the probe. Measure the thickness of the material. All kinds of materials that can make ultrasonic waves propagate inside them at a constant speed can be measured by this principle. The thickness gauge designed according to this principle can accurately measure various plates and various processed parts, and can also monitor various pipelines and pressure vessels in production equipment, and monitor their thinning degree after being corroded during use . [0003] For the current measurement of the wall thic...

AI Technical Summary

Problems solved by technology

However, the current general-purpose ultrasonic thickness measuring transducer cannot work normally at high temperature, because it is inaccurate in measurement at high temperature, has a short life and poor reliability, and is easy to fall off after long-term work, so it cannot be used for long-term measurement of the wall thickness of the inner tube of a high-temperature chimney. , reliable and continuous measurement, it is impossible to obtain the corrosion status and corrosion rate of the inner wall of the cylinder by the corrosion flue gas

At the same time, the existing thickness detection device only has a single channel, that is, only one ultrasonic thickness measurement transducer is connected, and can only measure one target object at a time. When multiple targets need to be detected, multiple thickness detection devices must be used, or Move the same thickness detection device to the position of multiple targets, which causes troubles in use and high cost

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