浅析牵引电机环火的原因及防护措施.doc

浅析牵引电机环火的原因及防护措施

目    录

摘   要 I
Abstract II
引   言 1
第 1 章 牵引电机环火的危害 2
1.1牵引电机概述 2
1.2环火的定义 5
1.3环火的危害 5
1.4当前的国内对牵引电机环火的研究现状 6
第 2 章 牵引电机环火的原因分析 1
2.1环火产生的具体原因分析 1
2.2环火产生的具体案例分析 2
第 3 章 牵引电机环火的防护措施分析 1
结 束 语 4
致    谢 5
参考文献 6

 
 
摘   要
牵引电动机作为电力机车主要电气设备之一，其质量的好坏对机车整体质量起着至关重要的影响。虽然近年来，在制造厂家与各科研部门的共同努力下，牵引电动机基础质量得以不断提高。但牵引电动机在某些恶劣条件下运行时，在换向器表面正、负电刷之间可能出现强烈的环行电弧而发生短路，同时伴有闪光与巨响，这种现象称为环火。环火不仅严重影响列车安全正常运行，而且每年给铁路运输造成巨大经济损失。本文在参考了大量国内外的研究文献资料和数据的基础之上，针对牵引电动机环火的故障进行了分析，讨论了产生环火故障的原因，指出在运用、保养、检修中存在的问题，并提出预防措施。

关键词： 牵引电机；环火；故障；改进；
 
Abstract
Traction motor of electric locomotive main electrical equipment as one, its quality of locomotive quality plays a crucial effect. Although in recent years, the manufacturer and the scientific research departments under the joint efforts, traction motor foundation to improve the quality of. But the traction motor in some harsh operating conditions, the commutator surface positive, negative brush may occur between the circular arc and strong short circuit occurs, accompanied by the flash and bang, this phenomenon is called the ring of fire. Ring fire not only seriously affect the safe and normal operation of the train, and every year to the railway transportation has caused huge economic losses. In this paper, referring to the large number of domestic and foreign research literature on the basis of information and data, the traction motor flashover fault analysis, discusses the fire ring fault reason, pointed out in the use, maintenance, maintenance of existing problems, and puts forward the preventive measures.
Key words: traction motor; fault; improvement of the ring of fire;