变压器油浸绝缘纸之间的微动磨损机理研究

史晓婉, 阎明印, 赵 晶

doi:10.16577/j.issn.1001-1560.2022.0220

材料保护 >

2022 , Vol. 55 >Issue 8: 90 - 94

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0220

试验研究

变压器油浸绝缘纸之间的微动磨损机理研究

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(沈阳工业大学机械工程学院，辽宁沈阳 110870)

赵晶(1978-)，教授，博士，主要研究方向为变压器绝缘、流体机械、高分子材料加工机械，电话：13840336401，E - mail: lnzj9999@hotmail.com

收稿日期: 2022-03-20

修回日期: 2022-04-29

录用日期: 2022-05-30

网络出版日期: 2023-12-17

基金资助

中央引导地方科技发展专项基金(2020JH6/10500016)资助

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Study on Fretting Wear Mechanism between Transformer Oil - Immersed Insulation Papers

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(School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, China)

Received date: 2022-03-20

Revised date: 2022-04-29

Accepted date: 2022-05-30

Online published: 2023-12-17

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摘要

为分析变压器振动对绕组绝缘纸产生的影响，根据磁激微动影响下变压器绕组油浸绝缘纸破损的现象，使用摩擦磨损试验机UMT - 2对油浸绝缘纸进行摩擦磨损实验。通过在上球试样外侧包裹与摩擦副厚度相同的油浸绝缘纸实现油纸 - 油纸摩擦，对试验过程中采集的摩擦系数和油浸绝缘纸破损状态进行分析，明确在油纸 - 油纸摩擦中，纸张厚度和法向载荷大小对其磨损情况的影响。研究发现：在相同的法向载荷和摩擦次数的情况下，随着油浸绝缘纸厚度的增加破损层数减少，但摩擦系数随之增大。对于相同厚度的油浸绝缘纸，随着摩擦次数和法向载荷的增加其破损层数增多，但摩擦系数随之变小。油纸 - 油纸摩擦主要磨损机制为黏着磨损、磨粒磨损和剥层磨损共同作用。

关键词： 油浸绝缘纸; 磁激微动; 磨损机理; 摩擦系数; 法向载荷

本文引用格式

史晓婉, 阎明印, 赵晶 . 变压器油浸绝缘纸之间的微动磨损机理研究[J]. 材料保护, 2022 , 55(8) : 90 -94 . DOI: 10.16577/j.issn.1001-1560.2022.0220

Abstract

In order to analyze the influence of transformer vibration on the winding oil - immersed insulation paper, the friction and wear tester UMT - 2 was used to test the such paper based on the damage phenomenon of transformer winding oil - immersed insulation paper under the influence of magnetic excitation fretting. Oil paper - oil paper friction was realized by wrapping oil - immersed insulation paper with the same thickness as the friction pair on the outer side of the upper sphere specimen. The influence of paper thickness and normal load on the wear of oil paper - oil paper friction process was determinated through an analysis of the friction coefficient collected during the test and the damage state of oil - immersed insulation paper. Results showed that under the same normal load and friction times, the number of damaged layers decreased and the friction coefficient increased with the increase of the thickness of oil - immersed insulation paper. For the oil - immersed insulation paper with the same thickness, the number of damaged layers increased and the friction coefficient decreased with the increase of friction times and normal load. The main wear mechanism of oil paper - oil paper friction was the combined action of adhesive wear, abrasive wear and delamination wear.

Key words： oil - immersed insulation paper; magnetic excitation fretting; wear mechanism; friction coefficient; normal load

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