描述

定子是用來產(chǎn)生旋轉(zhuǎn)磁場的。三相電動機(jī)的定子一般由外殼、定子鐵心、定子繞組等部分組成。

（1）外殼

三相電動機(jī)外殼包括機(jī)座、端蓋、軸承蓋、接線盒及吊環(huán)等部件。

機(jī)座：鑄鐵或鑄鋼澆鑄成型，它的作用是保護(hù)和固定三相電動機(jī)的定子繞組。中、小型三相電動機(jī)的機(jī)座還有兩個端蓋支承著轉(zhuǎn)子，它是三相電動機(jī)機(jī)械結(jié)構(gòu)的重要組成部分。通常，機(jī)座的外表要求散熱性能好，所以一般都鑄有散熱片。

端蓋：用鑄鐵或鑄鋼澆鑄成型，它的作用是把轉(zhuǎn)子固定在定子內(nèi)腔中心，使轉(zhuǎn)子能夠在定子中均勻地旋轉(zhuǎn)。

軸承蓋：也是鑄鐵或鑄鋼澆鑄成型的，它的作用是固定轉(zhuǎn)子，使轉(zhuǎn)子不能軸向移動，另外起存放潤滑油和保護(hù)軸承的作用。

接線盒：一般是用鑄鐵澆鑄，其作用是保護(hù)和固定繞組的引出線端子。

吊環(huán)：一般是用鑄鋼制造，安裝在機(jī)座的上端，用來起吊、搬抬三相電動機(jī)。

（2）定子鐵心

異步電動機(jī)定子鐵心是電動機(jī)磁路的一部分，由0.35mm～0.5mm厚表面涂有絕緣漆的薄硅鋼片疊壓而成，如圖2所示。由于硅鋼片較薄而且片與片之間是絕緣的，所以減少了由于交變磁通通過而引起的鐵心渦流損耗。鐵心內(nèi)圓有均勻分布的槽口，用來嵌放定子繞圈。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計算機(jī)控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列

本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

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