Surface descaling method based on multi-frequency leaked ultrasonic guided waves

Abstract

The invention relates to a surface descaling method based on multi-frequency ultrasonic guided waves and belongs to the technical field of descaling. According to the technical key points of the method, for the medium scaling surface containing liquid load, an energy converter module is placed at the position away from a liquid load scaling area, a signal generation module generates a multi-frequency continuous excitation voltage signal, after being amplified through a signal amplifying module, the multi-frequency continuous excitation voltage signal acts on the energy converter module, ultrasonic guided waves propagated along a structure body are generated, when the guided waves are propagated to the scaling area with the liquid load, some energy is leaked into the liquid, the generated cavitation effect can effectively impact on scale, and the purpose of descaling is achieved. According to the method, the advantage of the large coverage range of the ultrasonic guided waves is utilized for achieving remote online scale removing, equipment to be washed does not need to be shut down, or disassembled, meanwhile, the multi-frequency excitation method can remove the scale more uniformly and effectively, and the removing rate is increased. The method is high in efficiency, the acting range is large, and pollution to environment is avoided.

Description

technical field [0001] The invention relates to a surface descaling method based on multi-frequency ultrasonic guided waves, which belongs to the technical field of descaling. Background technique [0002] Industrial equipment in humid environments or fluid heat exchange areas, such as boilers, heat exchangers, circulating cooling water systems, and membrane filtration systems (sea water desalination), will always have dirt deposits on the heat transfer surfaces. Dirt usually accumulates on solid surfaces in contact with fluids, and exists as a solid or slime-like substance. Surface fouling will reduce the heat transfer coefficient of the equipment, resulting in a decrease in production capacity and an increase in production energy consumption. Moreover, if the dirt is not dealt with in time, it may also cause mechanical failure of the equipment and unexpected shutdown, causing serious industrial accidents. [0003] At present, the descaling methods for the surface of indu...

AI Technical Summary

Problems solved by technology

Therefore, the traditional ultrasonic method needs to disassemble the equipment, which leads to the interruption of production, and this method has the disadvantage of small removal range

Images