介質(zhì)的流速選用范圍表

介質(zhì)的流速選用范圍表介質(zhì)工作條件或管徑范圍流速推薦值m/s飽和蒸汽DN＜10030~15DN=100~20035~25DN＞20030~40P＜1MPa15~20P=1~4MPa20~40P=4~12MPa40~60過熱蒸汽DN＜10040~20DN=100~20050~30DN＞20040~60

二次蒸汽回用時15~30不回用60高壓乏汽80~100乏汽排氣管，從受壓容器排出80從無壓容器排出15~30壓縮氣體真空5~10P≤0.3MPaG8~12P=0.3~0.6MPaG20~10P=0.6~1.0MPaG15~10P=1~2MPaG12~8P=2~3MPaG8~3P=3~30MPaG3~0.5氧氣P=0~0.05MPaG10~5P=0.05~0.6MPaG8~6P=0.6~1MPaG6~4P=2~3MPaG4~3煤氣管道長50~100m，P≤0.027MPaG3~0.75管道長50~100m，P≤0.27MPaG12~8管道長50~100m，P≤0.8MPaG12~3半水煤氣P=0.1~0.15MPaG10~15天然氣30煙道氣煙道內(nèi)3~6管道內(nèi)3~4石灰窯氣10~12氮氣P=5~10MPaG2~5氫氮混合氣P=20~30MPaG5~10氨氣P=真空15~25P＜0.3MPaG8~15P＜0.6MPaG10~20P＜2MPaG3~8乙烯氣體P=22~150MPaG5~6乙炔氣體P＜0.01MPaG3~4P＜0.15MPaG4~8P＜2.5MPaG最大4氮氣體10~25液體1.5氯仿氣體10液體2氯化氫氣體（鋼襯膠管道）20液體（橡膠管道）1.5乙二醇2水及粘度相似的液體P=0.1~0.3MPaG0.5~2P＜1MPaG3~0.5P＜8MPaG3~2P＜20~30MPaG3.5~2自來水主管P=0.3MPaG1.5~3.5支管P=0.3MPaG1.0~1.5鍋爐給水P＞0.8MPaG1.2~3.5蒸汽冷凝水0.5~1.5冷凝水自流0.2~0.5過熱水2海水P＜0.6MPaG1.5~2.5油及粘度較大的液體粘度0.05Pa·sDN250.5~0.9DN500.7~1.0DN1001.0~1.6粘度0.1Pa·sDN250.3~0.6DN500.5~0.7DN1000.7~1.0DN2001.2~1.6粘度1Pa·sDN250.1~0.2DN500.16~0.25DN1000.25~0.35DN2000.35~0.55液氨P=真空0.05~0.3P≤0.6MPaG0.8~0.3P≤2MPaG1.5~0.8氫氧化鈉濃度0~30%2濃度30~50%1.5濃度50~73%1.2硫酸濃度88~93%（鉛管）1.293%~100%（鑄鐵管、鋼管）1.2鹽酸襯膠管1.5氯化鈉帶固體2~4.5物固體1.5泥狀混合物濃度15%2.5~3濃度25%3~4濃度65%2.5~3氣體鼓風(fēng)機吸入管10~15鼓風(fēng)機排出管15~20壓縮機吸入管10~20壓縮機排出管P＜1MPaG10~8P=1~10MPaG10~20P＞10MPaG8~12往復(fù)式真空泵吸入管13~16往復(fù)式真空泵排出管25~30油封式真空泵吸入管10~13水及粘度相似的液體往復(fù)泵吸入管0.5~1.5往復(fù)泵排出管1~2離心泵吸入管