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href="http://m.cdcfah.com/cp/second-_dgdq/">電工電氣</a>?<a href="http://m.cdcfah.com/cp/third-dgdq_kcdgdqcp/">庫存電工電氣產(chǎn)品</a>?咸寧避雷針制作歡迎咨詢湖北乾元上風(fēng)電氣供應(yīng)</p><div id="y77kh7f" class="leftbox clearfix"><h1>咸寧避雷針制作歡迎咨詢湖北乾元上風(fēng)電氣供應(yīng)</h1><div id="velnudp" class="proBig"><div id="mwtahja" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/hbqysf/637232513372724610/4217025.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2acebnu" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/hbqysf/637232513372724610/4217025.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7n3g2x7" 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>湖北省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>咸寧避雷針制作,避雷針</p><p><span>***更新：</span>2021-01-09 12:08:49</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="ycj8dse" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">湖北乾元上風(fēng)電氣工程有限公司</a></p><p><span>聯(lián)系人：</span>尹經(jīng)理</p><p><span>郵箱: </span></p><p><span>電話: </span>15671528728</p><p><span>傳真: </span>156_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>156-71528728</p><p><span>地址: </span>武漢市江岸區(qū)金橋大道金橋壹號1203</p><p>[當(dāng)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="bumoqm3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="py8srde" class="box"><p><h2> 避雷針的覆蓋面積是多少 </h2> <p> <span style="font-size:16px;">據(jù)中國的規(guī)范規(guī)定，單支避雷針的保護(hù)范圍是一個錐體，高度為h的避雷針，其在地面上的保護(hù)半徑r=1，咸寧避雷針制作.5h；在被保護(hù)物高度hx的水平面上，其保護(hù)半徑rx為：rx=(1，咸寧避雷針制作.5h-2hx)P。 “折線法”是比較成熟的方法，在電力系統(tǒng)又稱“規(guī)程法”，咸寧避雷針制作，即單支避雷針的保護(hù)范圍是一個以避雷針為軸的折線圓錐體。單支避雷針的保護(hù)范圍在DL/T620-997《交流電氣裝置的過電壓保護(hù)和絕緣配合》標(biāo)準(zhǔn)中有所規(guī)定；“滾球法”是國際電工會（IEC）推薦的接閃器保護(hù)范圍計算方法之一。我國建筑防雷規(guī)范GB50057-1994Z中也把“滾球法”強(qiáng)制作為計算避雷針保護(hù)范圍的方法。滾球法是以hR為半徑的一個球體沿需要防止擊雷的部位滾動，當(dāng)球體只觸及接閃器（包括被用作接閃器的金屬物）或只觸及接閃器和地面（包括與大地接觸并能承受雷擊的金屬物），而不觸及需要保護(hù)的部位時，則該部分就得到接閃器的保護(hù)。</span> 避雷針安裝廠家，湖北乾元上風(fēng)電氣供應(yīng)。咸寧避雷針制作</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="咸寧避雷針制作,避雷針" src="https://tyunfile.71360.com/UploadFile/hbqysf/637232513372724610/4217025.jpg"></div><h2> 房屋避免雷擊的有效方法 </h2> <p> <span style="font-size:16px;">裝置避雷針是避免雷擊的有效方法。在房屋處豎一金屬棒，棒下端連一條足夠粗的銅線，銅線下端連一塊金屬板埋入地下深處潮濕處。金屬棒的上端須是一個尖頭或分叉為幾個尖頭。有了這樣的裝置，當(dāng)空中有帶電的云時。避雷針的前列因靜電感應(yīng)就集中了異種電荷，發(fā)生前列放電，與云內(nèi)的電相中和，避免發(fā)生激烈的雷電、這就是避雷針能避雷的一方面。但這種作用頗慢，如果云中積電很快，或一塊帶有大量電荷的云突然飛來，有時來不及按上述方式中和，于是有強(qiáng)烈的放電，加雷電仍會發(fā)生。但這時由于避雷針高過周圍物體，它的前列又集中了與云中電異號的電荷，如果雷電是在云和地面物之間發(fā)生，放電電流主要通過避雷針流入大地，因此，不會打在房屋或附近人的身上，只會打在避雷針上了。由此可見，避雷針的前列放電作用會減少地面物與云之間打雷的可能性；到了不可避免時，它自己就負(fù)擔(dān)了雷的打擊，房屋與人得到了安全。</span> 咸寧避雷針制作避雷針安裝價格，湖北乾元上風(fēng)電氣供應(yīng)，品質(zhì)優(yōu)良值得推薦！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="咸寧避雷針制作,避雷針" src="https://tyunfile.71360.com/UploadFile/hbqysf/637232513372919922/6502836.jpg"></div><h2> 避雷針的作用是什么？ </h2> <p> <span style="font-size:16px;">常規(guī)防雷電可分為防直擊雷電、防感應(yīng)雷電和綜合性防雷電。防直擊雷電的避雷裝置一般由三部分組成，即接閃器、引下線和接地體；接閃器又分為避雷針、避雷線、避雷帶、避雷網(wǎng)。以避雷針作為接閃器的防雷電原理是：避雷針通過導(dǎo)線接入地下，與地面形成等電位差，利用自身的高度，使電場強(qiáng)度增加到極限值的雷電云電場發(fā)生畸變，開始電離并下行先導(dǎo)放電。避雷針在強(qiáng)電場作用下產(chǎn)生前列放電，形成向上先導(dǎo)放電；兩者會合形成雷電通路，隨之瀉入大地，達(dá)到避雷效果。實(shí)際上，避雷針是引雷針，可將周圍的雷電引來并提前放電，將雷電電流通過自身的接地導(dǎo)體傳向地面，避免保護(hù)對象直接遭雷擊。</span> </p><h2> 建筑物在多少高度必須安裝避雷針 </h2> <p> <span style="font-size:16px;">并不是規(guī)定有多少層需要裝避雷針，要看樓房是不是在避雷帶保護(hù)半徑之內(nèi)。就是說房子如果50層，旁邊如果也有一個51層的樓房上裝了避雷針，如果樓房在避雷針保護(hù)半徑之內(nèi)，也可以不用裝。如果房子只有三層，但是在當(dāng)?shù)氐狞c(diǎn)，附近也有沒有裝避雷針，這樣也需要裝避雷針。避雷針的種類：直擊雷避雷針/特殊避雷針/提前預(yù)放電避雷針 1、直擊雷適用于石化倉庫、廣播電視、加油站、建筑大樓、信標(biāo)臺，通信基站、氣象臺、基地、雷達(dá)機(jī)房、銀行大樓。 2、特殊適用于較高的建筑大樓微波通訊站、雷達(dá)基站、信標(biāo)臺，通信基站、基地、雷達(dá)機(jī)房、銀行大樓、天文氣象臺等重要場所。 3、預(yù)放電當(dāng)避雷針截受雷擊時，由接閃體接閃，通過雷電波形處理裝置，利用外殼與中心接地桿之間有3mm間隙，構(gòu)成耦合電容，同時外殼通過一個電感線圈接地（中心接地桿）當(dāng)下行先導(dǎo)接近接閃器時，由于頻率極高，電感呈開路狀態(tài)，電容對高頻呈現(xiàn)短路特性。因此耦合電容作用下，接閃器表面電場強(qiáng)度迅速增加，直至觸發(fā)雪崩過程，從而能在頃刻間將雷電流泄放入地，以至有效的達(dá)到防雷害保安全的目的。</span> 防雷避雷針安裝公司，湖北乾元上風(fēng)電氣供應(yīng)，品質(zhì)優(yōu)良值得推薦！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="咸寧避雷針制作,避雷針" src="https://tyunfile.71360.com/UploadFile/hbqysf/637232513374277344/5446338.jpg"></div><h2> 避雷針的保護(hù)范圍是多少？ </h2> <p> <span style="display:none;"></span><span style="font-size:16px;">避雷針的工作原理就其本質(zhì)而言，避雷針不是避雷，而是利用其高聳空中的有利地來位，把雷電引向自身，承受雷擊。同時把雷電流泄入大地，起著保護(hù)其附源近比它矮的建筑物或設(shè)備免受雷擊的作用。簡單一點(diǎn)說，一級保護(hù)是以30米為半徑、二級保護(hù)是45米為半百徑、三級保護(hù)是60米為半徑做弧的保護(hù)范圍。計算方法避雷針的保護(hù)半徑與高度（h）有關(guān)，以及與所現(xiàn)的滾球半徑有關(guān)， D為滾球半徑（度閃擊距離）類建筑物為D＝30米第二類建筑物為D＝45米第三類建筑物為D＝60米保護(hù)范圍采用規(guī)范之計算公式： Rx=?{h(2hr-h)}-?{hx(2hr-hx)} 其中Rx為避雷針在距離地問面hx米處的保護(hù)半徑（米）； hr為滾球半徑,根據(jù)建筑物類別取值30、45、60； hx為被保護(hù)物的高度一般來說，避雷針越高，保護(hù)范圍就越大，保護(hù)效果也越好，但考慮到避雷針建設(shè)的安全性和經(jīng)濟(jì)答性，避雷針大多建設(shè)在35米-45米之間。</span> 防雷避雷針安裝廠家，湖北乾元上風(fēng)電氣供應(yīng)，歡迎您來點(diǎn)電咨詢！咸寧小區(qū)避雷針檢測</p><p style="text-indent:25px">避雷針價格，湖北乾元上風(fēng)電氣供應(yīng)，品質(zhì)優(yōu)良值得推薦！咸寧避雷針制作</p><h2> 避雷針的作用是什么 </h2> <p> <span style="font-size:16px;">避雷針，又名防雷針、接閃桿，是用來保護(hù)建筑物、高大樹木等避免雷擊的裝置。避雷針由接閃器、接地引下線和接地體 3部分組成。接閃器通常采用直徑為 15～20mm、長度為1～2m的圓鋼或鋼管，固定于支柱上端經(jīng)接地引下線與接地體連接。當(dāng)雷云對地放電通道發(fā)展到臨近地面時，由于避雷針前列突出地面并有良好接地，在針尖附近的電場強(qiáng)度提高，聚積相反極性的電荷，引導(dǎo)放電。進(jìn)而防止建筑物或儀器蓄積過多電荷而遭受雷擊。一般來講，雷電并不會直接擊中避雷針，而避雷針本身如果被閃電擊中也有著融化及的危險。避雷針具有一定的保護(hù)作用.</span> 咸寧避雷針制作</p><p style="text-indent:25px">湖北乾元上風(fēng)電氣工程有限公司致力于電工電氣，是一家貿(mào)易型的公司。公司業(yè)務(wù)分為武漢防雷檢測，變電站防雷接地，機(jī)房避雷針安裝，避雷針等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司從事電工電氣多年，有著創(chuàng)新的設(shè)計、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅實(shí)有力的支持。</p></p><br 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