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class="keyword_light"><p> 假如無焰泄爆裝置泄爆片于除塵器的泄爆，常見的測算泄爆面積的標著:GB/T15605-2008、EN14491-2012和NFAP68-2013?，F階段中國在泄爆面積測算時存在的不足，關鍵有： </p> <p> 1)沒有依據有關規范開展泄爆面積的測算，只是依據經驗或除塵器尺寸挑選泄爆片規格尺寸。導致的結果可能是泄爆面積不足大，危害泄爆實際效果，導致除塵器內泄爆工作壓力擴大，會導致除塵器形變或毀壞; </p> <p> 2)不清楚粉塵的發生爆炸特性，如Kst、Pmax等;粉塵發生爆炸特性Kst和Pmax是用以粉塵泄爆面積測算時重要也是務必的主要參數。一般的作法是參照有關規范列舉的Kst和Pmax值，但參照粉塵和具體粉塵在顆粒物尺寸、顆粒物樣子、環境濕度等層面有區別，靠譜的做法是開展粉塵發生爆炸特性檢測，以獲得具體粉塵的Kst和Pmax值; </p> <p> 3)用以無焰泄爆裝置泄爆面積測算的主要參數挑選不科學，如Pstat和Pred的賦值;這兩個會危害泄爆面積的數值，如：Pred值獲得較鐘頭，測算的泄爆面積就大;Pred值獲得很大時，測算的泄爆面積就小。Pred怎樣賦值，與除塵器的抗壓強度相關; </p> <p> 除塵器內部聚集遍布的濾袋或濾筒促使發生爆炸的散播明顯的很慢，發生爆炸將會會沿濾袋或濾筒中間散播。無論如何，因為濾袋或濾筒的制冷效用和濾袋或濾筒間不容易產生滲流，發生爆炸的快速傳播會減少。 </p> <p> 全新的EN14491和NFPA68規范中容許在預估除塵器泄爆面積時，根據綜合性考慮到濾袋或濾筒的容積、濾袋或濾筒間的間隔尺寸、泄爆板的布局部位等要素，來相對的挑選用以泄爆面積測算的除塵器的容積。 </p> <p> GB/T15605-2008規范5.2.2規定：器皿容量不包括在其中阻礙物的容積。器皿內若有阻礙物(如濾袋、套封、濾筒)，則器皿容量應減掉過慮構件所占容積或過慮物質包圍著的容積。 </p> <p> 提議在挑選無焰泄爆裝置泄爆口腔上皮細胞，聯絡技術專業的生產商或有關工作人員開展泄爆面積的測算。 </p></div> <div style="width:100%; font-size:20px; color:#666; padding:10px 0px; 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