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Simulation study on dielectric materials brokenby high voltage discharge(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2019年03期
Page:
320-325
Research Field:
Publishing date:

Info

Title:
Simulation study on dielectric materials brokenby high voltage discharge
Author(s):
Li Hongda1Zhang Bin2
1.School of Equipment Engineering; 2.School of Automation and Electrical Engineering,Shenyang Ligong University,Shenyang 110159,China
Keywords:
high voltage dielectrics plasma channels electrode structure pulses
PACS:
TM89
DOI:
-
Abstract:
In order to study the generation mechanism of a plasma channel and the effect of electrode structure on a discharge channel,a three-dimensional model of solid-liquid mixture medium is established,and a rock-breaking simulation software is developed to set circuit parameters and discharge dielectric parameters. By changing the shape and spacing of the electrodes,the solid-liquid mixture plasma channel is simulated by the software,and the spatio-temporal characteristics of the channel and the field around the electrode are obtained. The simulation results show that polarization phenomenon occurs on the surface of the solid dielectrics and a plasma channel is generated after the pulse generated by the pulse generator inputs from the electrode to the solid dielectrics; the plasma channel formes at the junction of inhomogeneous solid dielectrics and liquid dielectrics,and the discharge channel can accumulate energy density in ms-level time and rapidly raise temperature to generate tremendous pressure; the electric field intensity around the plasma channel is obviously higher than that of other areas; the solid dielectrics can be effectively broken when the energy in the plasma channel is 20%~40% of the total energy storage.

References:

[1] 王莹,孙元章,阮江军,等. 脉冲功率科学与技术[M]. 北京:北京航空航天大学出版社,2010:1-2.
[2]聂万胜,周思引,车学科. 纳秒脉冲放电等离子体助燃技术研究进展[J]. 高电压技术,2017,43(6):1749-1751.
Nie Wansheng,Zhou Siyin,Che Xueke. Research progress of nanosecond pulse discharge plasma combustion support technology[J]. High Voltage Technology,2017,43(6):1749-1751.
[3]鲍先凯,赵金昌,武晋文,等. 脉冲荷载作用下煤体裂纹扩展研究[J]. 煤矿安全,2018,49(2):44-46.
Bao Xiankai,Zhao Jinchang,Wu Jinwen,et al. Study on coal crack propagation under impulse loading[J]. Coal Mine Safety,2018,49(2):44-46.
[4]张校熔,庄故章,罗德强,等. SelFrag高电压脉冲矿石破碎技术研究进展[J]. 金属矿山,2017,3:97-100.
Zhang Xiaorong,Zhuang Guzhang,Luo Deqiang,et al. Progress in research on high voltage pulse ore crushing technology of SelFrag[J]. Metal Mine,2017,3:97-100.
[5]母福生. 粉碎新技术概述[J]. 矿山机械,2004,9:78.
Mu Fusheng. Overview of new crushing technology[J]. Mining Machinery,2004,9:78.
[6]Andres U,Bialecki R. Liberation of mineral constituents by high-voltage pulses[J]. Powder Technology,1986,48(3):269-277.
[7]左蔚然,赵跃民,何亚群,等. 电脉冲破碎技术在超纯煤制备中的应用前景[J]. 煤炭科学技术,2012,40(1):122-125.
Zuo Weiran,Zhao Yuemin,He Yaqun,et al. Application prospect of electric pulse crushing technology in preparation of ultra-pure coal[J]. Coal Science and Technology,2012,40(1):122-125.
[8]Bluhm H,Frey W,Giese H,et al. Application of pulsed HV discharges to material fragmentation and recycling[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2000,7(5):625-636.
[9]Andres U. Parameters of disintegration of rock by electrical pulses[J]. Powder Technology,1989,58(4):265-269.
[10]李宏达,李欣,孟宪江,等. 高压脉冲对岩混材料击穿效应的仿真研究[J]. 南京理工大学学报,2015,39(1):15-16.
Li Hongda,Li Xin,Meng Xianjiang,et al. The simulation study of breakdown effect of high-voltage pulse on rock mixtures[J]. Journal of Nanjing University of Technology,2015,39(1):15-16.
[11]安德鲁斯U. 应用有价成分[J]. 国外金属矿选矿,2001(6):28-29.
Andrews U. Applied valuable components[J]. Metal Mineral Processing in Foreign Countries,2001(6):28-29.
[12]田静,杨晓东. 单脉冲放电过程中等离子体通道的观测研究[J]. 电加工与模具,2018(5):19-20.
Tian Jing,Yang Xiaodong. Observation and study of plasma channel during single pulse discharge[J]. Electrical Machining and Model,2018(5):19-20.
[13]Noskov M D,Lopatin V V,Chelokov A A,et al. Investigation of discharge channel elongation under thermal dielectric breakdown[J]. Russian Physics Journal,2003,46(1):91-92.
[14]Kukhta V R,Lopatin V V,Noskov M D,et al. Use of a fractal model for describing discharge development in condensed dielectrics[J]. Zh Tekh Fe,1995,65:1-2.
[15]Kurets V I,Lopatin V V,Noskov M D,et al. Influence of local heterogeneities on discharge channel trajectory at electric pulse destruction of materials[J]. Journal of Minning Science,2000,36(3):268-270.

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Last Update: 2019-06-30