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Development On High Power Ultrasonic Generator And The Experimental Rsearch On Utrasonic Emulsifying

Posted on:2001-01-24Degree:MasterType:Thesis
Country:ChinaCandidate:L H LiuFull Text:PDF
GTID:2132360002952619Subject:Thermal Engineering
Abstract/Summary:PDF Full Text Request
The ultrasonic generator and the vibration system are the key and crux of the ultrasonic emulsifying technology, which will have wide application. The purpose of the thesis is focused on the ultrasonic emulsifying equipment, which are useful for the investigation to the mechanism and technique of emulsification and combustion. It includes: (1) Based on analytical calculations of the combustion of emulsified oil by the equal energy and yong methods, the effects of emulsified oil combustion, and the percentage of energy and yong are introduced in this thesis. (2) The process and conditions of technology, and the types and parameters of high power ultrasonic transducer for ultrasonic emulsification are analyzed. A new type automatic control system of the ultrasonic emulsifying process is given. (3) An ultrasonic generator with adjustable parameters and various frequency and its key technology are described, which is characterized by high reliability. (4 )The mathematical model for the accuracy four-terminal network of the ultrasonic vibration system is established. The experimental research on the overall characteristics of the ultrasonic vibration system is supplied. (5) The mathematical model for impedance match of ultrasonic transducer is described. Based on the load and frequency characteristics of the transducer system, the near-optimal design is obtained through theoretical calculation and manual adjustment. (6) Based on the coupled resonance theory, analysis is made on the piezoelectric transducer's matching problem. A new concept of matching-dynamic is proposed with emphasis on the importance of efficiency in matching.
Keywords/Search Tags:Ultrasonic generatom, Ultrasonic emulsifying, Automatic control, Impedance matching
PDF Full Text Request
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