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耐火型絕緣母線槽:高層建筑與重要設(shè)施的電力安全屏障

更新時(shí)間:2025-09-05      瀏覽次數(shù):20
  一、什么是耐火型絕緣母線槽
  耐火型絕緣母線槽是一種專門針對(duì)火災(zāi)場(chǎng)景設(shè)計(jì)的電力傳輸設(shè)備,旨在火災(zāi)發(fā)生時(shí)維持關(guān)鍵線路的電力供應(yīng),為人員疏散、消防救援和重要設(shè)備運(yùn)行爭(zhēng)取寶貴時(shí)間。其核心結(jié)構(gòu)由四部分組成:
  防火外殼:采用冷成型薄鋼型材或冷拉型鋼制成,表面噴涂防火涂料(遇火后迅速膨脹形成致密碳化隔熱層,封閉外殼縫隙),部分產(chǎn)品采用雙層中空結(jié)構(gòu),通過(guò)空氣隔熱阻止高溫氣體侵入。
  耐火母線:產(chǎn)品采用聚酰亞氨(黃金帶)+粉云母帶混合纏繞(參考9),確保高溫下絕緣性能穩(wěn)定。
  耐火支架:由氧化鋁陶瓷或耐火絕緣材料制成,支架開有凹槽固定母線,防止母線移位。
  連接與分接組件:兩端設(shè)母線槽連接盒(采用耐火絕緣組件,連接可靠),內(nèi)部設(shè)母線分接盒(支持插接式分接,無(wú)需斷電即可擴(kuò)展回路)。
 
  二、核心性能
  1.耐火性能
  耐火時(shí)間:常規(guī)產(chǎn)品可在火災(zāi)中連續(xù)運(yùn)行1小時(shí)以上;
  耐火溫度:當(dāng)環(huán)境溫度升至960℃(模擬建筑火災(zāi)的高溫場(chǎng)景)時(shí),母線槽仍能維持正常運(yùn)行;
  隔熱措施:根據(jù)使用場(chǎng)景不同,隔熱層設(shè)計(jì)分為兩種——
  長(zhǎng)期通電場(chǎng)景(如正常供電線路):采用空氣隔熱(不影響散熱);
  應(yīng)急電源場(chǎng)景(如消防線路):采用硅棉填充。
  2.絕緣性能
  絕緣性能直接決定了母線槽在正常和火災(zāi)場(chǎng)景下的安全性。
  3.機(jī)械性能
  外殼的機(jī)械強(qiáng)度直接影響母線槽的使用壽命和環(huán)境適應(yīng)性:
 
  三、適用場(chǎng)景
  1.高層建筑
  需求:高層建筑(如100米以上的寫字樓、住宅)的消防電梯、應(yīng)急照明、防火卷簾等設(shè)備需要24小時(shí)不間斷電力,火災(zāi)時(shí)若電力中斷,將直接威脅人員生命安全;
  優(yōu)勢(shì):母線槽載流量大,可替代多根耐火電纜,減少電纜橋架占用空間。
  2.重要公共設(shè)施
  機(jī)場(chǎng)/車站:航站樓的廣播系統(tǒng)、行李傳送帶、應(yīng)急照明需要持續(xù)供電,確保旅客疏散有序;
  體育館/展覽館:大型活動(dòng)中的照明、音響、消防系統(tǒng)需要穩(wěn)定電力,火災(zāi)時(shí)若電力中斷,可能引發(fā)踩踏事故;
  檔案館/博物館:珍貴文物、檔案的恒溫恒濕設(shè)備需要不間斷電力,火災(zāi)時(shí)若電力中斷,可能導(dǎo)致文物損壞。
  3.工業(yè)場(chǎng)景
  化工、冶金、汽車制造等工廠的應(yīng)急電源線路(如消防泵、排煙風(fēng)機(jī)),需要在火災(zāi)時(shí)維持運(yùn)行,防止事故擴(kuò)大。
 
  四、選型與安裝
  1.選型要點(diǎn)
  消防要求:選擇密集絕緣母線槽(防止煙囪效應(yīng)),特別重要場(chǎng)所(如醫(yī)院ICU)選用耐火型母線槽;
  絕緣材料:選擇無(wú)鹵素、低煙的絕緣材料(如陶瓷化硅橡膠),避免火災(zāi)時(shí)釋放有毒氣體;防火材料檢測(cè)無(wú)鹵低煙電纜。
  2.安裝注意事項(xiàng)
  施工前準(zhǔn)備:需具備完善的施工圖紙和產(chǎn)品技術(shù)文件,確保安裝部位的建筑裝飾工程已結(jié)束(如墻面抹灰、吊頂安裝),電氣設(shè)備(如配電柜)已檢驗(yàn)合格;
  安裝位置:遠(yuǎn)離腐蝕性蒸汽、重機(jī)械,避免母線槽受機(jī)械沖擊或化學(xué)腐蝕。
  定期維護(hù):
  每年檢測(cè)接頭溫升;
  每?jī)赡隀z查絕緣電阻;
  每三年檢查防火涂料。
 
  未來(lái),隨著技術(shù)的進(jìn)步,耐火型絕緣母線槽將向“更環(huán)保、更智能、更耐用”方向發(fā)展,成為高層建筑與重要設(shè)施的“標(biāo)配”電力設(shè)備。對(duì)于建筑設(shè)計(jì)師、電氣工程師而言,選擇耐火型絕緣母線槽,就是選擇“更安全、更可靠的電力傳輸方案”。

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