优质煤粉仓专用重力防爆门,,　,
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74DD重力防爆门
　　,膜板式防爆门又分圆形防爆门、斜面防爆门、圆形带活动短管防爆门、400X600带活动短管防爆门,通常布置于热风送粉管道上,斜面防爆门通常布置于户外。带活动短管防爆门布置于煤粉仓系统。重力防爆门有水平布置和垂直布置两种,主要用于烟道。,
　　,防爆门的作用是当煤粉受热膨胀时,造成系统压力过高,气流冲破膜板或顶开重力盖而泄压,达到保护设备和管道的目的。,
　　,该系列防爆门皆按照74DD标准制作防爆门分圆形、斜面、椭圆形和带活动短管等类型,每类编制规格有Dg200—Dg1000等八种。,
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74DD圆形防爆门

标号,,DD4321,,DD4322,,DD4323,,DD4324,,DD4325,,DD4326,,DD4327,,DD4328,,
公称通径,,毫米,,300,,400,,500,,600,,700,,800,,900,,1000,,
D,,325,,326,,530,,630,,720,,820,,920,,1020,,
B,,427,,528,,645,,745,,843,,943,,1043,,1153,,
B1,,563,,706,,866,,1008,,1143,,1285,,1424,,1578,,
H,,572,,673,,782,,882,,976,,1075,,1174,,1279,,
重量（kg）,, ,,38,, ,, ,, ,, ,,130,, ,,
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74DD斜面防爆门











标号,
,DD4301,
,DD4302,
,DD4303,
,DD4304,
,DD4305,
,DD4306,
,DD4307,
,DD4308,
,
公称通径,
,毫米,
,300,
,400,
,500,
,600,
,700,
,800,
,900,
,1000,
,
D,
,427,
,528,
,645,
,745,
,843,
,943,
,1043,
,1153,
,
D1,
,325,
,326,
,530,
,630,
,720,
,820,
,920,
,1020,
,
H,
,221,
,221,
,223,
,223,
,233,
,233,
,233,
,225,
,
重量（,kg,）,
, ,
, ,
, ,
, ,
, ,
, ,
, ,
,86