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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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>浙江電子線圈客戶至上</p><p><span>***更新：</span>2020-06-28 14:26:20</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ker87c8" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">無錫東英電子有限公司</a></p><p><span>聯(lián)系人：</span>朱淇華</p><p><span>郵箱: </span>wxdydz@163.com</p><p><span>電話: </span>13921179070</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0510-83785478</p><p><span>地址: </span>江蘇省無錫市錫山區(qū)錫北鎮(zhèn)新壩村</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="3t7toqx" class="page-proshow02"><p class="title">詳細說明</p><div id="uj7pace" class="box"><p><p> 諧振電容: c 單位:PF 本題建義c=500...1000pf 可自行先決定，或由Q值決定 </p> <p> 諧振電感: l 單位: 微亨 </p> <p> 線圈電感的計算公式 </p> <p> 1。針對環(huán)形線圈,有以下公式可利用: (鐵芯) </p> <p> L=N2.AL L= 電感值(H) </p> <p> H-DC=0.4πNI / l N= 線圈匝數(shù)(圈) </p> <p> AL= 感應系數(shù) </p> <p> H-DC=直流磁化力 I= 通過電流(A) </p> <p> l= 磁路長度(cm) </p> <p> l及AL值大小，可參照Microl對照表。例如: 以T50-52材，線圈5圈半，其L值為T50-52(表示OD為0.5英吋)，經(jīng)查表其AL值約為33nH </p> <p> L=33.(5.5)2=998，浙江電子線圈客戶至上.25nH≒1μH </p> <p> 當流過10A電流時，其L值變化可由l=3.74(查表) </p> <p> H-DC=0.4πNI / l = 0.4×3.14×5.5×10 / 3.74 = 18.47 (查表后) </p> <p> 即可了解L值下降程度(μi%) </p> <p> 2。介紹一個經(jīng)驗公式 </p> <p> L=(k*μ0*μs*N2*S)/l </p> <p> 其中 </p> <p> μ0 為真空磁導率=4π*10(-7)。(10的負七次方) </p> <p> μs 為線圈內(nèi)部磁芯的相對磁導率，浙江電子線圈客戶至上，空心線圈時μs=1 </p> <p> N2 為線圈圈數(shù)的平方 </p> <p> S 線圈的截面積，浙江電子線圈客戶至上，單位為平方米 </p> <p> l 線圈的長度，單位為米 </p> <p> k 系數(shù)，取決于線圈的半徑(R)與長度(l)的比值。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江電子線圈客戶至上" src="https://tyunfile.71360.com/WaterMark/UploadFile/dongying/637218591383662110/1606588.jpg"></div><p> 本發(fā)明屬于變壓器及其相關設備的安裝領域，具體地涉一種變壓器的起吊方法。背景技術：隨著電力事業(yè)的發(fā)展，變壓器大量進入居民區(qū)和商業(yè)區(qū)。長期處于噪聲環(huán)境中，輕則影響人們的生活質(zhì)量，重則對人的聽力造成長久損傷，因此采取有效方法降低變壓器造成的噪聲意義重大。目前減小變壓器噪聲的方法主要有如下幾種：減小磁致伸縮；提高硅鋼片的疊裝質(zhì)量；控制鐵心的固有頻率；控制冷卻系統(tǒng)的噪聲；安裝橡膠減震板；安裝消音油箱；設置隔音墻隔音室等。前四種方法從振動源考慮，通過改變鐵心的特性減小噪聲，不適用于變壓器已經(jīng)設計完成的場合。后三種方法是通過安裝減震設施以及阻斷噪聲傳播途徑等手段減小變壓器噪聲對人們的影響。對于變壓器已經(jīng)安裝完成的場合，只能通過外界干涉進行減震降噪。在變壓器底部安裝彈簧減震器是一種有效減弱變壓器震動的途徑。在變壓器減震器的安裝過程中，變壓器的起吊環(huán)節(jié)**為困難。但目前，尚未存在一套科學的變壓器起吊體系。綜上所述，目前針對變壓器減震器的安裝過程，急需一種簡單方便的安裝變壓器起吊方法。技術實現(xiàn)要素：為了解決上述技術問題，本發(fā)明提出了一種變壓器的起吊方法，其特征在于。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江電子線圈客戶至上" src="https://tyunfile.71360.com/WaterMark/UploadFile/dongying/637218591376162110/1061678.jpg"></div><p> 電磁閥里有密閉的腔，在的不同位置開有通孔，每個孔都通向不同的油管，腔中間是閥，兩面是兩塊電磁鐵，哪面的磁鐵線圈通電閥體就會被吸引到哪邊，通過控制閥體的移動來檔住或漏出不同的排油的孔，而進油孔是常開的，液壓油就會進入不同的排油管，然后通過油的壓力來推動油缸的活塞，活塞又帶動活塞桿，活塞竿帶動機械裝置動。這樣通過控制電磁鐵的電流就控制了機械運動。直動式電磁閥工作原理通電時，電磁線圈產(chǎn)生電磁力把關閉件從閥座上提起，閥門打開；斷電時，電磁力消失，彈簧把關閉件壓在閥座上，閥門關閉。分布直動式電磁閥工作原理它是一種直動式和先導式相結合的原理。常閉式：當入口與出口沒有壓差時，通電后電磁力直接打開先導孔連接主閥活塞依次向上提起，閥門打開；當入口與出口達到啟動壓差時，通電后，電磁力先打開先導孔，主閥活塞上腔壓力下降，從而利用壓差和電磁力拉動主活塞，閥口打開；斷電時，靠彈簧復位關閉先導孔，主活塞上腔增壓，推動主活塞向下移動，閥關閉。常開式與常閉式相反。先導式電磁閥工作原理常閉式一一通電時，電磁力吸合先導孔閥芯，先導孔打開，主閥活塞上腔壓力下降，在主活塞上腔和下腔形成上低下高的壓力。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/424263.html</p></div></div></div></div></div><div id="shrnz2y" class="page-right twoColRt"><div id="hmtvnzw" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="sceqseb" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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