Abstract
The CJ20 series contactor is the new series of exchange contactor that our country succeeds in developing recently, exchanging (50Hz) 380V , 660V and 1140V in specified voltage, the specified electric current range is 4-630A, divides into 11 pieces of electric current grade altogether. Its structure is fixed up a bit more brokenly and three-dimensional for moving directly type pair. Of simple structure, is it install area to be little to take. The armature has not rotated the axle , does not have soft connection to touch the head to move for the moving directly type, help to raise the mechanical life-span . Touch head adopt pairs of broken some structure , exchange to put out as to voltage very much favorable electric arc, thus simplified the arc device of killing .
This text, through designing calculating to every part of parameter of exchanging the contactor of CJ20 series, is it is it analyse to optimize to go on through BASIC procedure language to it, in order to be able to design performance superior contactor come out, let CJ20 series exchange the contactor and get more extensive application. Make an introduction to the structure of every spare part of the contactor at first: The electro-magnet adopts single U moving type directly , it is not the angry crack of magnetic that is put in the middle of the quiet unshakable in one's determination bottom, will not change in the course of using. It is tight on the boots very much in quiet two unshakable in one's determination to divide the magnetic ring to glue with the adhesive. Kill arc room it puts on to be whom potter's clay make too. Auxiliary to touch head adopt colourless transparent outer cover that polycarbonate make , closed structure, it make single part, is it touch both sides of head mainly to put , have 4-6 auxiliary to touch hair, is it control direct current way heavy to turn on from heavy to exceed Cheng auxiliary to touch hair to have also. Utilize the computer to optimize analysing to the part of the electro-magnet during the course of finishing at the end that is designed, in order to reach the anticipated result.
[Key Words]：CJ20 series exchange the contactor The design of every spare part is calculated
Optimization analysis of the electro-magnet
目 录
摘要 Ⅰ
Abstract Ⅱ
第1章 绪 论 1
1.1交流接触器的作用与地位 1
1.2交流接触器的发展概况 1
1.3交流接触器的主要技术参数 2
1.4接触器的结构选型 5
1.5课题主要要完成的工作 6
第2章 触头系统的设计计算 7
2.1设计时对触头的基本要求 7
2.2确定主触头结构形式及其使用材料 7
2.3确定主触头尺寸及参数 8
2.4验算主触头温升及动热稳定性 10
2.5辅助触头的设计 13
第3章 灭弧系统的设计 17
3.1接触器的熄弧原理及方法 17
3.2接触器的常用灭弧装置及材料 18
3.3选择触头灭弧系统的结构形式及尺寸 19
3.4验算主触头灭弧系统性能 19
第4章 电磁系统的设计 21
4.1主要技术数据 21
4.2电磁系统反力特性的计算 22
4.3选择电磁铁的结构形式 23
4.4单U型电磁铁的设计计算 23
第5章 电磁铁的优化设计 36
5.1优化准则 36
5.2优化设计的步骤 38
5.3优化结果 38
