Large power composite ultraphonic pipe

Abstract

The invention relates to a large power composite ultraphonic pipe. A long composite ultraphonic pipe is formed in such a way that a plurality of short composite pipe piezoelectric transducer units are connected along the axial direction by hollow thread pipes; both ends of the long composite ultraphonic pipe are provided with covers; each short composite pipe piezoelectric transducer unit comprises at least one cylindrical surface piezoelectric pile ring group; the outer parts of the cylindrical surface piezoelectric pile ring groups are provided with metal prestress shells; the outer walls of the cylindrical surface piezoelectric pile ring groups and the inner walls of the metal prestress shells are tightly compounded together; the inner parts of the cylindrical surface piezoelectric pile ring groups are provided with expanding type prestress mechanisms; the two adjacent expanding type prestress mechanisms are electrically connected; the metal prestress shells of the two adjacent short composite pipe piezoelectric transducer units are electrically connected; cylindrical surface piezoelectric pile units in each cylindrical surface piezoelectric pile ring group are electrically connected, and the two adjacent cylindrical surface piezoelectric pile ring groups are electrically connected. The large power ultraphonic pipe can generate even cylindrical surface sound radiation in the radial omnidirectional range and is particularly suitable for the ultraphonic processing of liquid.

Description

technical field [0001] The invention relates to an ultrasonic device, in particular to a high-power composite ultrasonic tube capable of producing omnidirectional cylindrical radiation. Background technique [0002] With its advantages of high power density, high electromechanical conversion efficiency and stable performance, the composite ultrasonic transducer has been widely used in ultrasonic cleaning, ultrasonic welding, ultrasonic vibration cutting and processing, etc. Sandwich type longitudinal composite ultrasonic transducer, etc. [0003] High-power ultrasound has broad application prospects in the field of liquid ultrasonic treatment technology. Liquid ultrasonic treatment technology is an energy-saving and environmentally friendly green ultrasonic application technology that uses ultrasonic vibration energy to produce physical effects such as cavitation, radiation pressure, and acoustic flow in liquid media to process liquids. For example, in the field of sonoche...

AI Technical Summary

Problems solved by technology

[0006] (2) For ultrasonic rod transducers with lower frequencies, their lateral dimensions (diameters) will be relatively large, which limits their application range

There is a problem with energy conversion efficiency compared to a single vibration mode

Generally, the vibration energy conversion efficiency of mode conversion is lower than that of a single vibration mode transducer

[0013] (2) The circular tube can only be driven by the longitudinal composite transducers at both ends, so the total output power of the cylindrical transducer is limited

In addition, the length of the circular tube must meet the integer multiple of half wavelength, and the circular tube should not be too long, otherwise, the efficiency of the transducer will be low

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