FPGA based descaling system of ultrasonic guided-wave liquid-filled pipe

Abstract

The invention discloses an FPGA based descaling system of an ultrasonic guided-wave liquid-filled pipe and belongs to the technical field of ultrasonic non-destructive removal. The FPGA based descaling system mainly comprises a signal source generating module, a data acquisition module, a power amplification module, a waveform display module and a driving descaling module. When fouling accumulation is discovered in a liquid-filled pipe, an inputted key can be identified through a DDS controller of an FPGA development board to call a corresponding ROM core, a DA module converts a digital signalin the ROM core into an analog signal so as to generate a voltage signal; a data acquisition device collects the voltage signal and transmits the voltage signal to a power amplifier; the amplified voltage signal drives a wedge-shaped piezoelectric sensor, and the piezoelectric sensor converts the voltage signal into a mechanical vibration signal; the mechanical vibration signal means that ultrasonic guided-wave is spread in the pipe wall, part of energy leaks or is refracted to the fouling part, and the fouling removal effect is realized through the cavatition. The FPGA based descaling systemcan efficiently, rapidly and safely remove fouling and has higher application value in the food and chemical industry.

Description

technical field [0001] The invention relates to an FPGA-based descaling system for ultrasonic guided wave liquid-filled pipelines, belonging to the technical field of ultrasonic non-destructive removal. Background technique [0002] Pipelines have advantages in transporting fluids and play an important role in economic and social development. However, pipeline contamination is an issue that must be brought to the attention of the industry. It forces related industries to regularly remove dirt and even replace pipes. If the descaling operation is not timely or appropriate, it may also cause the pipe to deform, leak or even burst. [0003] At present, there are many dirt removal technologies at home and abroad, but they can be divided into: physical descaling and chemical descaling. (1) Physical flushing method, using water or other liquids or solids to remove dirt through mechanical and frictional forces, but this method has a series of problems such as stopping normal pro...

AI Technical Summary

Problems solved by technology

(1) Physical flushing method, using water or other liquids or solids to remove dirt through mechanical and frictional forces, but this method has a series of problems such as stopping normal production, replacing substances in the pipeline, and excessive local pressure

(2) Chemical corrosion method, using acidic or other corrosive solutions to dissolve dirt, also requires a large amount of water to wash the pipe wall, so it will cause a lot of waste of solutions and water resources, in addition to acidic and corrosive solutions It will also corrode metal pipes, and there is an indirect risk of safe production

(3) Ultrasonic descaling method, which removes dirt through mechanical vibration and cavitation effect, but the coverage is limited and the descaling effect is not good

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