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src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268047434618_lcdianji_5605250.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gqcz4p7" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268047434618_lcdianji_5605250.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="2frtik2" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>浙江中型電機零配件</p><p><span>***更新：</span>2020-05-29 10:08:44</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="3egd4x2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">山東聯(lián)創(chuàng)電機有限公司</a></p><p><span>聯(lián)系人：</span>李道松</p><p><span>郵箱: </span>505920191@qq.com</p><p><span>電話: </span>13906437131</p><p><span>傳真: </span>0533_7781170</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0533-7788099</p><p><span>地址: </span>山東省淄博市臨淄區(qū)朱臺鎮(zhèn)魏家村</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="vumjyvp" class="page-proshow02"><p class="title">詳細說明</p><div id="dspwlco" class="box"><p><p> 日常工作中最常見的三相異步電動機有鼠籠型電機和繞線式電機。這是根據(jù)它們的轉(zhuǎn)子結構來分類的。從外觀上看，明顯的區(qū)別就是繞線式電機帶轉(zhuǎn)子滑環(huán)，鼠籠式電機不帶。鼠籠型電機轉(zhuǎn)子繞組是自己短路的繞組，在轉(zhuǎn)子在每個槽中放有一根導體，導體比鐵芯長，在鐵芯兩端用兩個端<span style="display:none;"></span>環(huán)將導體短接，形成短路繞組。若將鐵芯去掉，剩下的繞組形狀似松鼠籠子，故稱鼠籠式繞組。 </p> <p> <span style="display:none;"></span>繞線型電機：轉(zhuǎn)子是銅線繞制的線圈，線圈末端是通過滑環(huán)引到啟動控制設備上。 </p> <p> 繞線式電機 </p> <p> 優(yōu)缺點如下： </p> <p> 1.鼠籠式異步電動機： </p> <p> 優(yōu)點：結構簡單，啟動方便，運行可靠，體積小，堅固耐用，便于維護、檢修和安裝，成本低等。 </p> <p> 缺點：啟動轉(zhuǎn)矩較小，浙江中型電機零配件，功率因數(shù)較低，轉(zhuǎn)速不易調(diào)節(jié)，浙江中型電機零配件，直接啟動時啟動電流大。正常情況下，浙江中型電機零配件，鼠籠型電機冷狀態(tài) </p> <p> 下運行啟動2-3次，每次間隔時間不得小于5分鐘。熱狀態(tài)下運行啟動一次。鼠籠式異步電動機在頻繁啟動時，還 </p> <p> 容易造成鼠籠斷條。 </p> <p> 2.繞線式異步電動機： </p> <p> 優(yōu)點：通過在轉(zhuǎn)子回路中串入外加電阻，降低了啟動電流和轉(zhuǎn)速，增加了啟動轉(zhuǎn)矩?？梢愿纳齐妱訖C的啟動和調(diào) </p> <p> 速性能。 </p> <p> 缺點：結構復雜，維護較麻煩，運行可靠性較差，價格較貴。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江中型電機零配件" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268047434618_lcdianji_5605250.jpg"></div><p style="text-indent:25px">異步電動機的轉(zhuǎn)子由轉(zhuǎn)子鐵心、轉(zhuǎn)子繞組及轉(zhuǎn)軸組成。轉(zhuǎn)子鐵心也是電動機磁路的一部分，也是用硅鋼片疊成。與定子鐵心沖片不同的是，轉(zhuǎn)子鐵心沖片是在沖片的外圓上開槽，疊裝后的轉(zhuǎn)子鐵心外圓柱面上均勻地形成許多形狀相同的槽，用以放置轉(zhuǎn)子繞組。轉(zhuǎn)子繞組是異步電動機電路的另一部分，其作用為切割定子磁場，產(chǎn)生感應電勢和電流，并在磁場作用下受力而使轉(zhuǎn)子轉(zhuǎn)動。其結構可分為籠型繞組和繞線式繞組兩種類型。這兩種轉(zhuǎn)子各自的主要特點是：籠型轉(zhuǎn)子結構簡單，制造方便，經(jīng)濟耐用；繞線式轉(zhuǎn)子結構復雜，價格貴，但轉(zhuǎn)子回路可引入外加電阻來改善起動和調(diào)速性能?；\型轉(zhuǎn)子繞組由置于轉(zhuǎn)子槽中的導條和兩端的端環(huán)構成。為節(jié)約用鋼和提高生產(chǎn)率，小功率異步電動機的導條和端環(huán)一般都是融化的鋁液一次澆鑄出來的；對于大功率的電動機，由于鑄鋁質(zhì)量不易保證，常用銅條插入轉(zhuǎn)子鐵心槽中，再在兩端焊上端環(huán)?；\型轉(zhuǎn)子繞組自行閉合，不必由外界電源供電，其外形像一個籠子，故稱籠型轉(zhuǎn)子。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江中型電機零配件" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099268088279679_lcdianji_2251850.jpg"></div><p> 對于交流電機，額定電壓在1000V及以上的為高壓電機；低于1000V的為低壓電機(有些資料中的界限是1140V)。對于直流電機，額定電壓在1500V及以上的為高壓電機；低于1500V的為低壓電機。那么，高壓電機和低壓電機相比有哪些優(yōu)缺點：額定電壓不一樣，啟動和工作電流不一樣，電壓越高，電流越??；電機的絕緣和耐壓也不一樣，電機繞組的導線也一樣，同樣功率的電機，高電壓的電機導線比低電壓的要少，使用的電纜也不一樣。 </p> <p> 一、線圈的絕緣材料有所區(qū)別，低壓電機，線圈主要采用漆包線或其他簡單的絕緣，如復合紙，高壓電機的絕緣通常采用多層結構，如粉云母帶，結構更復雜，耐壓程度更高。 </p> <p> 二、散熱結構上的區(qū)別，低壓電機主要采用同軸風扇直吹散熱，高壓電機大多數(shù)帶有**的散熱器，通常有兩種風扇，一組內(nèi)循環(huán)風扇，一組外循環(huán)風扇，兩組風扇同時運轉(zhuǎn)，在散熱器上進行熱交換將熱量排出電機外面。 </p> <p> 三，軸承結構不同，低壓電動機通常前后各有一組軸承，而高壓電動機，因為負載較重，通常軸伸端會有兩組軸承，非軸伸端的軸承數(shù)量根據(jù)負載情況而定，而特別大型的電動機會采用滑動軸承。 </p> <p> <br /> </p> <span style="display:none;"></span><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江中型電機零配件" src="http://tyunfile.71360.com/UpLoadFile/2019/11/21/9/637099267873280552_lcdianji_5231498.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/77368.html</p></div></div></div></div></div><div id="kzlia2g" class="page-right twoColRt"><div id="a279n2i" class="box01 margin10 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