Online monitoring device for vibration and creep of high-temperature high-pressure pipeline

Abstract

The invention relates to an online monitoring device for the vibration and the creep of a high-temperature high-pressure pipeline, and belongs to an ultrasonic detection principle-based pipeline online-monitoring device. A fixed coordinate frame is fixedly connected with a bracket, wherein the bracket is fixedly connected with a base; four ultrasonic probes are arranged at the 1/2 positions of upper, lower, left and right coordinatometers of the fixed coordinate frame respectively, and are connected with outer ultrasonic probe sheaths in a sleeving way; the outer ultrasonic probe sheaths are adhered to measurement points of the outer wall of a heat-preservation layer; a signal output terminal of each ultrasonic probe is connected with an input terminal of a wireless acquirer respectively; power supply terminals of the wireless acquirer and the ultrasonic probes are connected with a power module respectively; a wireless transmitter is electrically connected with the wireless acquirer; the wireless acquirer and the power module are fixedly connected with a cross plate of the bracket. The device has the advantages of novel structure, higher sensitivity, convenience in mounting and maintenance, capability of synchronously monitoring the vibration, the creep value and the creep speed of the pipeline and important practical significance.

Description

technical field [0001] The invention relates to an on-line monitoring device for vibration and creep of high-temperature and high-pressure pipelines in the technical field of thermal power engineering, in particular to an on-line monitoring device for vibration and creep of high-temperature and high-pressure pipelines based on the principle of ultrasonic detection. Background technique [0002] High-temperature and high-pressure pipes are usually used as steam pipes in thermal systems of power plants. In high-temperature and high-pressure power plants, it usually operates at a pressure of 90-140 atmospheres and a temperature of 510-570°C. In order to improve the reliability of high-temperature and high-pressure pipeline materials in operation, the state of the materials must be supervised first. It is particularly important for the high temperature and high pressure pipelines that have been running for more than the design hours. In many cases, the creep deformation value ...

AI Technical Summary

Problems solved by technology

[0016] The invention provides an online monitoring device for vibration and creep of high-temperature and high-pressure pipelines to solve the existing problems of low precision, large measurement errors, damage to the insulation layer of pipelines, and no online real-time monitoring and early warning of pipeline vibration

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