湍流等离子体发生器的结构设计与实验研究
郭文钰1，林长海*,3，曹修全1,2，马耀明1
（1.四川轻化工大学 机械工程学院，四川 宜宾 644000；2.宜宾四川轻化工大学产业研究院，四川 宜宾 644000；3.四川苏格通讯技术有限公司，四川 宜宾 644000）
摘要：基于等离子体发生器结构设计理论，介绍了自制湍流等离子体发生器结构设计要点，通过LabVIEW虚拟仪器技术、MATLAB软件、电路设计与数据采集技术设计了一套诊断系统，然后利用该系统对湍流等离子体发生器的射流特性进行了实验研究。实验结果表明：通过增加中间电极的数量并限制其长度能够有效抑制双弧现象，不仅提高了等离子体发生器的工作功率，而且有利于提高湍流等离子体发生器的使用寿命；在满足U*(z)＞ΔU(z)的情况下，限制阳极轴向尺寸可以避免大尺度分流现象，从而提高湍流等离子体发生器的射流稳定性；此外，工作条件的变化会对等离子体射流特性产生明显的影响。
关键词：湍流等离子体发生器；等离子体射流特性；LabVIEW虚拟仪器技术；诊断系统
中图分类号：TF806.83 文献标志码：A doi：10.3969/j.issn.1006-0316.2023.08.008
文章编号：1006-0316 (2023) 08-0055-08
Structural Design and Experimental Study of a Turbulent Plasma Torch
GUO Wenyu1，LIN Changhai*,3，CAO Xiuquan1,2，MA Yaoming1
( 1.School of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin 644000, China; 2.Industrial Research Institute of Sichuan University of Science & Engineering, Yibin 644000, China; 3.Sichuan Suge Communication Technology Co., Ltd., Yibin 644000, China )
Abstract：On the basis of the structural design theory of the plasma torch, the structural design key points of a homemade turbulent plasma torch are discussed in detail. A diagnostic system is designed through the LabVIEW virtual instrument technology, the MATLAB software, the design of the circuit and data acquisition technology. Then the jet characteristics of the turbulent plasma torch are experimentally studied with this system. The experimental results show that: the double-arc phenomenon could be effectively suppressed by increasing the number of the intermediate electrodes and limiting their axial length, which could not only improve the working power of the plasma torch but also prolong the service life of the turbulent plasma torch; under the condition of U*(z)>DU(z), the large-scale shunting phenomenon could be avoided by limiting the axial length of the anode, which could improve the jet stability of the turbulent plasma torch; besides, the jet characteristics of the plasma torch could be influenced obviously by the working conditions.
Key words：turbulent plasma torch；plasma jet characteristics；LabVIEW virtual instrument technology；diagnostic system
———————————————
收稿日期：2022-09-23
基金项目：宜宾市科技计划项目（2021JC002）；道路施工技术与装备教育部重点实验室开放基金（300102252502）；泸州市机械结构优化及材料应用泸州市重点实验室开放基金（SCHYZSA-2022-02）；四川轻化工大学研究生创新基金（Y2022033）
作者简介：郭文钰（1999－），男，四川南充人，硕士，主要研究方向为热等离子体性能诊断，E-mail：1392242417@qq.com；曹修全（1989－），男，重庆人，博士，副教授，主要研究方向为热等离子体技术及其应用，E-mail：cao_comeon@126.com。*通讯作者：林长海（1982－），男，福建福州人，硕士，工程师，主要研究方向为通讯产品及可穿戴设备设计开发，E-mail：411469879@qq.com。
（1.四川轻化工大学 机械工程学院，四川 宜宾 644000；2.宜宾四川轻化工大学产业研究院，四川 宜宾 644000；3.四川苏格通讯技术有限公司，四川 宜宾 644000）
摘要：基于等离子体发生器结构设计理论，介绍了自制湍流等离子体发生器结构设计要点，通过LabVIEW虚拟仪器技术、MATLAB软件、电路设计与数据采集技术设计了一套诊断系统，然后利用该系统对湍流等离子体发生器的射流特性进行了实验研究。实验结果表明：通过增加中间电极的数量并限制其长度能够有效抑制双弧现象，不仅提高了等离子体发生器的工作功率，而且有利于提高湍流等离子体发生器的使用寿命；在满足U*(z)＞ΔU(z)的情况下，限制阳极轴向尺寸可以避免大尺度分流现象，从而提高湍流等离子体发生器的射流稳定性；此外，工作条件的变化会对等离子体射流特性产生明显的影响。
关键词：湍流等离子体发生器；等离子体射流特性；LabVIEW虚拟仪器技术；诊断系统
中图分类号：TF806.83 文献标志码：A doi：10.3969/j.issn.1006-0316.2023.08.008
文章编号：1006-0316 (2023) 08-0055-08
Structural Design and Experimental Study of a Turbulent Plasma Torch
GUO Wenyu1，LIN Changhai*,3，CAO Xiuquan1,2，MA Yaoming1
( 1.School of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin 644000, China; 2.Industrial Research Institute of Sichuan University of Science & Engineering, Yibin 644000, China; 3.Sichuan Suge Communication Technology Co., Ltd., Yibin 644000, China )
Abstract：On the basis of the structural design theory of the plasma torch, the structural design key points of a homemade turbulent plasma torch are discussed in detail. A diagnostic system is designed through the LabVIEW virtual instrument technology, the MATLAB software, the design of the circuit and data acquisition technology. Then the jet characteristics of the turbulent plasma torch are experimentally studied with this system. The experimental results show that: the double-arc phenomenon could be effectively suppressed by increasing the number of the intermediate electrodes and limiting their axial length, which could not only improve the working power of the plasma torch but also prolong the service life of the turbulent plasma torch; under the condition of U*(z)>DU(z), the large-scale shunting phenomenon could be avoided by limiting the axial length of the anode, which could improve the jet stability of the turbulent plasma torch; besides, the jet characteristics of the plasma torch could be influenced obviously by the working conditions.
Key words：turbulent plasma torch；plasma jet characteristics；LabVIEW virtual instrument technology；diagnostic system
———————————————
收稿日期：2022-09-23
基金项目：宜宾市科技计划项目（2021JC002）；道路施工技术与装备教育部重点实验室开放基金（300102252502）；泸州市机械结构优化及材料应用泸州市重点实验室开放基金（SCHYZSA-2022-02）；四川轻化工大学研究生创新基金（Y2022033）
作者简介：郭文钰（1999－），男，四川南充人，硕士，主要研究方向为热等离子体性能诊断，E-mail：1392242417@qq.com；曹修全（1989－），男，重庆人，博士，副教授，主要研究方向为热等离子体技术及其应用，E-mail：cao_comeon@126.com。*通讯作者：林长海（1982－），男，福建福州人，硕士，工程师，主要研究方向为通讯产品及可穿戴设备设计开发，E-mail：411469879@qq.com。
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