结构及供电电源对沿面介质阻挡放电装置放电特性及臭氧生成的影响

发布时间：2018-04-23 11:46

本文选题：沿面介质阻挡放电 + 装置结构　；参考：《电工技术学报》2017年02期

【摘要】：沿面介质阻挡放电(SDBD)等离子体能够高效生成反应活性物质,在生物医学、环保等应用领域得到广泛研究。SDBD装置的结构和供电电源参数是影响其放电特性及反应活性物质生成的主要因素,为此,以具有螺环线形高压电极的管状沿面放电装置为对象,研究了装置结构及供电电源对其放电特性及臭氧生成的影响。结果表明:在相同的供电电压下,螺环线形高压电极的螺距、介质厚度影响电极间的电场强度和分布、放电功率和臭氧生成量,但螺环线形高压电极的线径对放电功率和臭氧生成量几乎没有影响;螺环线形高压电极的螺距存在一个优化值,在螺距低于25mm时,放电功率和臭氧产生量随着螺距的增加而增加,当螺距大于25mm时,放电功率和臭氧产生量基本不再变化;当绝缘介质管厚度由3mm减小到1.6mm时,放电功率提高约2倍,臭氧产生量提高约3倍。同采用50Hz交流电源供电相比,SDBD装置采用9.6k Hz高频电源供电时,在较低的电压下即可获得较大的放电功率及臭氧产量,且臭氧生成的能量效率提高约25%。
[Abstract]:Surface dielectric Barrier discharge (DBD) plasma can efficiently produce reactive substances in biomedicine. The structure of SDBD plant and the power supply parameters are the main factors that influence the discharge characteristics and reactive active material formation in the SDBD plant. Therefore, the tubular discharge device with spiral high voltage electrode is taken as the object. The effects of device structure and power supply on discharge characteristics and ozone generation are studied. The results show that, at the same supply voltage, the pitch and dielectric thickness of the spiral loop high voltage electrode affect the electric field intensity and distribution, discharge power and ozone generation. However, the diameter of spiral high voltage electrode has little effect on discharge power and ozone generation, and the pitch of spiral loop high voltage electrode has an optimized value, when the pitch is lower than 25mm, When the pitch is greater than 25mm, the discharge power and ozone generation will not change, and when the thickness of insulating dielectric tube decreases from 3mm to 1.6mm, the discharge power will increase by about 2 times. Ozone production increased by about three times. Compared with 50Hz AC power supply, when 9.6kHz high frequency power supply is used, the discharge power and ozone output can be obtained at lower voltage, and the energy efficiency of ozone generation can be improved by about 25%.
【作者单位】：大连理工大学电气工程学院;许继集团研发中心;
【基金】：国家自然科学基金(21577011) 中央高校基本科研业务费专项基金(DUT15QY23)资助项目
【分类号】：O461

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