CAJ | 학술논문

目前对于超声波除垢效果影响因素的研究主要局限在超声波参数和换热介质参数两方面，而对于管道几何结构对超声波除垢效果影响的研究少有报道。为解决这一问题，通过自制超声波实验台分别采用圆管、波纹管、螺纹管和横纹管测量不同管道入口和出口处的声强和空化噪声积分数，对超声波在不同管道中的传播特性和空化效果进行了分析，并深入分析了影响机理。结果表明，管道的几何结构对超声波传播特性和空化效果有着明显影响，相比于圆管，超声波在强化换热管中的传播特性较差，但是由于湍流强度的增加，超声波在横纹管和螺纹管中的空化效果要优于圆管，而波纹管中由于过高的湍流强度空化效果反而比圆管差。
목전대우초성파제구효과영향인소적연구주요국한재초성파삼수화환열개질삼수량방면，이대우관도궤하결구대초성파제구효과영향적연구소유보도。위해결저일문제，통과자제초성파실험태분별채용원관、파문관、라문관화횡문관측량불동관도입구화출구처적성강화공화조성적분수，대초성파재불동관도중적전파특성화공화효과진행료분석，병심입분석료영향궤리。결과표명，관도적궤하결구대초성파전파특성화공화효과유착명현영향，상비우원관，초성파재강화환열관중적전파특성교차，단시유우단류강도적증가，초성파재횡문관화라문관중적공화효과요우우원관，이파문관중유우과고적단류강도공화효과반이비원관차。
The study of ultrasonic de-scaling factors is limited in ultrasonic parameters and heat transfer medium parameters,the effect of pipe geometry structure is seldom studied. Through the self-made ultrasound test bench with enhanced heat exchanger tubes of circular tube,corrugated pipe, threaded pipe and horizontal grain pipe the sound intensity and cavitation noise integral number at outlets of different pipe types were measured,the ultrasonic propagation characteristics and cavitation effect in different pipe types were analyzed,and the influence mechanism was discussed. The geometrical structure of the tube type significantly affected ultrasonic propagation characteristics and cavitation. Compared with circular tube,the ultrasonic propagation characteristics in heat exchange tubes was poorer. Due to increase of turbulence intensity,horizontal grain pipe and threaded pipe could promote ultrasonic cavitation,while corrugated pipe decreased the strength of cavitation because of too high turbulence intensity.