擋板門用(yong)于(yu)(yu)(yu)煙(yan)(yan)氣(qi)(qi)(qi)脫(tuo)硫系(xi)統吸收(shou)塔進、出口或(huo)旁路(lu)煙(yan)(yan)道上(shang)，或(huo)用(yong)于(yu)(yu)(yu)煙(yan)(yan)氣(qi)(qi)(qi)脫(tuo)硝及煙(yan)(yan)氣(qi)(qi)(qi)除塵(chen)系(xi)統中，風門通常采(cai)用(yong)百葉窗式雙(shuang)(shuang)層(ceng)擋(dang)板(ban)(ban)(ban)結(jie)構，關斷時(shi)雙(shuang)(shuang)層(ceng)擋(dang)板(ban)(ban)(ban)之間(jian)通入密(mi)封空(kong)氣(qi)(qi)(qi)進行氣(qi)(qi)(qi)密(mi)封，實現隔離關斷煙(yan)(yan)氣(qi)(qi)(qi)的作用(yong)，擋(dang)板(ban)(ban)(ban)門采(cai)用(yong)單軸驅動(dong)雙(shuang)(shuang)百葉窗式擋(dang)板(ban)(ban)(ban)結(jie)構，雙(shuang)(shuang)層(ceng)葉片中間(jian)設計(ji)有導入密(mi)封空(kong)氣(qi)(qi)(qi)的密(mi)封室，將高(gao)于(yu)(yu)(yu)煙(yan)(yan)氣(qi)(qi)(qi)壓力的密(mi)封空(kong)氣(qi)(qi)(qi)通入擋(dang)板(ban)(ban)(ban)，使雙(shuang)(shuang)層(ceng)擋(dang)板(ban)(ban)(ban)之間(jian)形成(cheng)密(mi)封空(kong)氣(qi)(qi)(qi)隔離層(ceng)，阻斷煙(yan)(yan)氣(qi)(qi)(qi)流的通過。 

　　擋板門密封(feng)風系統的(de)密封(feng)風機(ji)和電加(jia)熱(re)器可由廠方選型后成(cheng)套提(ti)供，擋(dang)板(ban)門采用機(ji)電一體(ti)化產品，具(ju)有力(li)矩(ju)保護(hu)和限(xian)位裝(zhuang)(zhuang)置并(bing)能遠方控制操作，電動(dong)(dong)裝(zhuang)(zhuang)置還具(ju)有手、電動(dong)(dong)切換(huan)功(gong)能以(yi)備安裝(zhuang)(zhuang)調試、檢(jian)修時使(shi)用，擋(dang)板(ban)門包括(kuo)風門本體(ti)、密封(feng)風入(ru)口閥(fa)、驅動(dong)(dong)裝(zhuang)(zhuang)置和其它(ta)附(fu)件，密封(feng)風機(ji)和電加(jia)熱(re)器可成(cheng)套供貨。

　　風道擋板門用于電廠煙風管道中作截流介質作用，擋板門具有全開全閉功能，使介質在管道中全部流通或關斷，一般不作調節門使用，風道擋板門常用于電廠或其它行業中的煙管、風道中做截流介質用，風門啟閉角度90℃，它具有全開全關兩個功能，使系統某一管路介質全部流通或關閉。