淺析牽引電機(jī)環(huán)火的原因及防護(hù)措施

目    錄

摘   要 I
Abstract II
引   言 1
第 1 章 牽引電機(jī)環(huán)火的危害 2
1.1牽引電機(jī)概述 2
1.2環(huán)火的定義 5
1.3環(huán)火的危害 5
1.4當(dāng)前的國內(nèi)對牽引電機(jī)環(huán)火的研究現(xiàn)狀 6
第 2 章 牽引電機(jī)環(huán)火的原因分析 1
2.1環(huán)火產(chǎn)生的具體原因分析 1
2.2環(huán)火產(chǎn)生的具體案例分析 2
第 3 章 牽引電機(jī)環(huán)火的防護(hù)措施分析 1
結(jié) 束 語 4
致    謝 5
參考文獻(xiàn) 6

 
 
摘   要
牽引電動機(jī)作為電力機(jī)車主要電氣設(shè)備之一，其質(zhì)量的好壞對機(jī)車整體質(zhì)量起著至關(guān)重要的影響。雖然近年來，在制造廠家與各科研部門的共同努力下，牽引電動機(jī)基礎(chǔ)質(zhì)量得以不斷提高。但牽引電動機(jī)在某些惡劣條件下運(yùn)行時，在換向器表面正、負(fù)電刷之間可能出現(xiàn)強(qiáng)烈的環(huán)行電弧而發(fā)生短路，同時伴有閃光與巨響，這種現(xiàn)象稱為環(huán)火。環(huán)火不僅嚴(yán)重影響列車安全正常運(yùn)行，而且每年給鐵路運(yùn)輸造成巨大經(jīng)濟(jì)損失。本文在參考了大量國內(nèi)外的研究文獻(xiàn)資料和數(shù)據(jù)的基礎(chǔ)之上，針對牽引電動機(jī)環(huán)火的故障進(jìn)行了分析，討論了產(chǎn)生環(huán)火故障的原因，指出在運(yùn)用、保養(yǎng)、檢修中存在的問題，并提出預(yù)防措施。

關(guān)鍵詞： 牽引電機(jī)；環(huán)火；故障；改進(jìn)；
 
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;