A system for detecting ultrasonic cavitation intensity

Abstract

The invention discloses a system for detecting the strength of ultrasonic cavitation. The system comprises a light source generator, which is used to generate optical signals; an optical splitter, which is used to divide an optical signal generated by the light source generator into two identical optical signals; single photon detectors, which are respectively arranged on the cavitation area and the reference area; an endoscope arranged on the cavitation area; a cavitation area parameterized model generating module, and a data base. By using the single photo detectors, the strength of ultrasonic cavitation is precisely measured; at the same time, the cavitation area is converted into a dynamic simulation model by the cavitation area parameterized model generating module during the whole detection process, the observation becomes easier for the staff, the precision of prediction and analysis is further improved, moreover, the display screen is provided with a data calculation module and an image generating module, and the detection results become more visual.

Description

Technical field [0001] The invention relates to ultrasonic cavitation intensity detection, in particular to a system for detecting the ultrasonic cavitation intensity. Background technique [0002] Ultrasonic cleaning and sonochemistry mainly use the cavitation effect of ultrasonic waves, and are widely used in machinery, medicine, electronics, and chemical industries. Cavitation refers to the formation of cavitation in the liquid and its subsequent dynamic behavior when the pressure of the liquid drops to a low enough level. Its main manifestation is the appearance of a large number of tiny bubbles that are constantly expanding and shrinking in the liquid. It produces and instantly collapses, forming a cloud of bubbles. When these bubbles collapse, a shock wave will be generated, and when they are close to the wall, they will move towards the wall and form a micro jet that hits the wall. These characteristics of cavitation make the measurement of the cavitation field very diff...

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Problems solved by technology

The aluminum foil cavitation method uses the cavitation effect of aluminum foil to evaluate the strength of the cavitation field, but this method is very imprecise, cannot be measured quantitatively, and has poor repeatability, and the presence of aluminum foil will affect the cavitation field, making the measurement deviate The real situation; the hydrophone method uses the measurement of sound pressure to indirectly reflect the cavitation intensity. This method does not directly reflect the information of the cavitation field. In many cases, the pressure field and the cavitation field are not equivalent, and the hydrophone probe If the diameter is large, it will affect the cavitation field. Cavitation will cause cavitation on the surface of the hydrophone, causing damage to the hydrophone. The iodine release method uses the chemical effect of cavitation to indirectly reflect the cavitation intensity. The chemical method has a great relationship with the indicator used, and is not linearly related to the cavitation intensity. In addition, this method cannot reflect the distribution characteristics of the cavitation field

At present, there is no good method or index for evaluating the cavitation effect. The manufacturers of ultrasonic cleaning equipment often talk to themselves, and the cavitation intensity cannot be compared, resulting in a very confusing market.

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