Experimental study on the life and performance of an improved DC arc plasma torch

doi:10.1088/1361-6463/ad256b

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Experimental study on the life and performance of an improved DC arc plasma torch
	Hu, Ya-Hao 2,3; Sun, Su-Rong 3; Meng, Xian 2; Huang, He-Ji 2; Wang, Hai-Xing 1,3
刊名	JOURNAL OF PHYSICS D-APPLIED PHYSICS
	2024-05-17
卷号	57 期号:20 页码:15
关键词	DC arc plasma torch shielding gas nitrogen arc electrode erosion
ISSN号	0022-3727
DOI	10.1088/1361-6463/ad256b
通讯作者	Sun, Su-Rong(ssr18@buaa.edu.cn) ; Wang, Hai-Xing(whx@buaa.edu.cn)
英文摘要	A novel DC arc plasma torch is designed in this paper in order to reduce the electrode erosion, and a series of experiments are carried out to investigate how to improve the lifetime and performance of the nitrogen DC arc plasma torch. The analysis of voltage characteristics of the plasma torch indicates that the interelectrode insert can increase the average arc voltage and the sudden expansion structure can reduce the voltage fluctuation, which is helpful to improve the working stability to some extent. The spectrum characteristics at the plasma torch outlet and the cold flow simulations show that the dual shielding gas mainly act near the anode and can effectively cover the entire anode wall. Combining the shielding gas distribution with anode heat transfer processes in argon and nitrogen plasma torch, it is inferred that argon shielding gas plays an important role on reducing the anode heat transfer processes in nitrogen plasma torch, which can effectively suppress the anode erosion. The life testing experimental results find that there is no significant erosion of the cathode, anode, and interelectrode insert after cumulative working time exceeding 20 h. The maximum nitrogen plasma jet length can reach similar to 35 mm with the outlet jet temperature of about 20 000 K at the current of 100 A and nitrogen gas flow rate of 10 slm. The maximum average specific enthalpy and thermal efficiency are respectively about 14 MJ kg-1 and 75% in the nitrogen plasma torch. Therefore, this newly designed DC arc plasma torch not only can suppress the electrode erosion but also has good working performance, which is expected to have excellent application prospects.
资助项目	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities[YWF-23-L-1221] ; [12375245] ; [12005010] ; [12175011] ; [11735004]
WOS关键词	COAL-GASIFICATION ; ANODE ATTACHMENT ; GENERATION ; SIMULATION ; MECHANISM ; FUTURE ; ENERGY ; JET
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:001174649800001
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94564]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Sun, Su-Rong; Wang, Hai-Xing
作者单位	1.Beihang Univ, Ningbo Inst Technol, Ningbo 315800, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 3.Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China
推荐引用方式 GB/T 7714	Hu, Ya-Hao,Sun, Su-Rong,Meng, Xian,et al. Experimental study on the life and performance of an improved DC arc plasma torch[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2024,57(20):15.
APA	Hu, Ya-Hao,Sun, Su-Rong,Meng, Xian,Huang, He-Ji,&Wang, Hai-Xing.(2024).Experimental study on the life and performance of an improved DC arc plasma torch.JOURNAL OF PHYSICS D-APPLIED PHYSICS,57(20),15.
MLA	Hu, Ya-Hao,et al."Experimental study on the life and performance of an improved DC arc plasma torch".JOURNAL OF PHYSICS D-APPLIED PHYSICS 57.20(2024):15.