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    • 當前位置:樂清市騰陽防爆電器有限公司 > 產品中心 > 防爆箱 > 化工不銹鋼BQXB-50P防爆變頻器

      化工不銹鋼BQXB-50P防爆變頻器

      產品型號: BQXB
      品  牌: 騰陽防爆
        價格電議,您可以向供應商詢價得到該產品價格
      所 在 地: 浙江溫州樂清市
      更新日期: 2022-08-06
      詳細信息
      BQXB系列防爆動力配電箱(變頻器)(ⅡB、ⅡC、DIP)
      變頻器配電箱 防爆配電箱 防爆照明配電箱
      廠用防爆配電箱 不銹鋼防爆配電箱 防爆動力配電箱
      防爆防腐配電箱 防爆照明動力配電箱 油田防爆配電箱
      首當其沖要解決的就是變頻器在防爆箱內的位置確定:
        
        變頻器結構布置
        
        我們將主回路設計成一個大單元,安裝在長方形防爆腔內后壁,后壁上通過一個過度散熱器
      與IGBT模塊、整流模塊等發熱元件接合,防爆外殼外壁加焊槽形散熱器,過度散熱器與槽形散熱器
      通過熱管相連接。變頻器內部產生的熱量就通過防爆腔后壁過度散熱器熱管槽形散熱器散發出去。
        
        變頻器的主回路在防爆箱的處理方案:
        
        主回路結構與通用變頻器的不同
        
       。1)沒有回路避免因繼電器動作時產生電火花造成的不安全因素,增加了變頻器的安全可靠性。
        
       。2)整流器容量選擇比通用變頻器增大一倍目的是為了耐受住變頻器開機瞬間電容充電電流的沖擊。
        
       。3)濾波電容選用多只無感電容并聯電解電容體積大,高溫環境下易爆炸,不安全;
      而無感電容體積小,耐高溫、高壓,在這種環境下應用非常安全。
        
        變頻器是一種發熱量非常大的電器,因此裝進防爆箱內只待解決的就是發熱問題:
        
        散熱問題
        
        由于變頻器的所有元件都裝在防爆腔內,空氣不能流動,散熱問題成為該變頻器所要解決的關鍵問題。
      在這里我們采用了一種新的散熱技術-熱管散熱技術。
        
       。1)熱管技術原理
        
        熱管是一種具有極高導熱性能的傳熱元件,它通過在全封閉真空管內工質的蒸發與凝結來傳遞熱量,
      具有極高的導熱性、良好的等溫性、冷熱兩側的傳熱面積可任意改變、可遠距離傳熱、可控制溫度等一系列優點。由熱管組成的換熱器具有傳熱效率高、結構緊湊、流體阻損小等優點。
        
        既然是防爆變頻器控制箱那么重點的在重點就是防爆問題,那么防爆問題是怎么解決的呢:
        
        防爆問題
        
        由于該變頻器所使用的環境有爆炸性氣體或粉塵較多,這就要求變頻器密封防爆,
      所以它的外殼不能用普通的殼體,必需用標準的防爆腔,把變頻器所有的元件都裝在防爆腔內。
      在防爆腔門上開一個觀察窗,把顯示部分裝在上面,把啟動、停止、調速控制裝在防爆腔門上。 
       
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