介质常用流速范围.docx

1、介质常用流速范围介质种类管路种类及工况p=0.1-0.3MPa(表压)p1.0MPa(表压)p8.0MPa(表压)0.520.532323.50.510.52流速范围 m/s水及粘度相近液体p20.0-30.0MPa(表压)热网循环水、冷却水压力回水无压回水p=0.3MPa0.51.21.53.51.01.530.20.50.51.52自来水锅炉给水冷凝水蒸汽冷凝水过热水海水、微碱水饱和蒸汽主管支管p0.8MPa(表压)自流p0.6MPa(表压)DN200DN=200-100DN100p1.0MPa(绝压)1.52.530402535153015202040406040603050204015

2、306051081210201015812360.530.7538123121015303436510784634251015510蒸汽p=1-4MPa(绝压)p=4-12MPa(绝压)DN200过热蒸汽DN=200-100DN100利用时不利用时真空p0.3MPa(表压)p=0.3-0.6MPa(表压)二次蒸汽压缩气体p=0.6-1.0MPa(表压)p=1.0-2.0MPa(表压)p=2.0-3.0MPa(表压)p=3.0-30.0MPa(表压)p0.03MPa煤气（管路长50-100mm）半水煤气天然气烟道气p=0.3MPap=0.8MPap=0.1-0.15MPa(表压)管道内烟道内p=

3、0-0.05MPa(表压)p=0.05-0.6MPa(表压)氧气p=0.6-1.0MPa(表压)p=1.0-2.0MPa(表压)p=2.0-3.0MPa(表压)氮气变换气氮氢混合气p=5-10MPa(绝压)p=0.1-2.0MPa(绝压)p=20-30MPa(绝压)介质种类真空氨气p0.3MPa(表压)p0.6MPa(表压)p2.0MPa(表压)乙烯气p=22MPa(表压)p=150MPa(表压)p0.01MPa(表压)乙炔气p0.15MPa(表压)p2.5MPa(表压)真空液氮硫酸盐酸排出废水油及相似液体p0.6MPa(表压)p2MPa(表压)管路种类及工况15-25815102038305

4、634485流速范围 m/s0.050.30.30.80.81.588100%1.21.50.40.80.52DN25粘度50 10-3Pa*sDN50DN100DN25DN50DN100DN200DN25粘度1Pa*sDN50DN100DN200鼓风机吸入管路排出管路压缩机吸入管路p1MPa0.50.90.7111.60.30.60.50.70.711.21.60.10.20.160.250.250.350.350.5510151520102081010208121316253010130.51.5121.520.51.51.5333。512204534油及粘度大的液体粘度0.1Pa*s气体压缩机排出管路p=110MPap10MPa吸入管路排出管路吸入管路排出管路常温70110往复泵油封式真空泵吸入管路往复泵离心泵吸入管路水及粘度相似液体离心泵排出管路高压离心泵排出管路齿轮泵吸入管路排出管路空气输送粉粒体水力输送粉粒体