Analysis of the charging characteristics of MgO powder in the feeding tube of a mineral insulated cable filling device

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics Pub Date : 2025-02-08 DOI:10.1016/j.elstat.2025.104039

Jialiang Chi, Jinjun Wang, Meixuan Su, Yao Zhao, Zhiqiang Wang

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引用次数: 0

Abstract

During the filling process of mineral insulated cables, MgO powder particles undergo tribocharging within the feeding tube, leading to charge accumulation on the surface and inside the powder. This results in a reduction in compactness of the powder, which subsequently affects the insulating properties of mineral insulated cables. The research on the phenomenon of tribocharging within the feeding tube is still insufficient. In order to address the aforementioned issues, the discrete element method (DEM) is used to construct a theoretical model and the EDEM simulation software is employed to examine the tribocharging process of MgO powder within the feeding tube. Then experiments are utilized to ascertain the influence of the tube's tilting angle and particle size on the charge-to-mass ratio of MgO powder particles. The results show that both the tilt angle of the feeding tube and the MgO particle size are proportional to the charge-to-mass ratio of the MgO powder.

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矿物绝缘电缆充填装置进料管中氧化镁粉体的充装特性分析

矿物绝缘电缆在填充过程中，MgO粉体颗粒在进料管内发生摩擦充电，导致粉体表面和内部电荷积累。这导致粉末的致密性降低，从而影响矿物绝缘电缆的绝缘性能。对进料管内摩擦充注现象的研究尚不充分。为了解决上述问题，采用离散元法（DEM）构建理论模型，并采用EDEM仿真软件对进料管内MgO粉的摩擦充装过程进行了研究。然后通过实验确定了管的倾斜角度和颗粒尺寸对MgO粉末颗粒电荷质量比的影响。结果表明：进料管倾斜角度和MgO颗粒尺寸与MgO粉末的电荷质量比成正比；

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Electrostatics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

11.10%

发文量

审稿时长

49 days

期刊介绍： The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.