輸送介質??? 污水 ?????????????????? 備注
介質粘度?? 0.7225m???????? Pa/s????? 按溫度35°計
介質密度?? 1000
流量?????? 250m3/d
流量?????? 10.41667m3/h
流量?????? 0.002894m3/s
泵前流速?? 1m/s???????????????????? (0.7~1.5m/s)
泵后流速?? 2m/s?????????????????????(0.8~2.5m/s)
泵前管徑?? 0.060713mm???????????????取65
泵后管徑?? 0.04293mm??????????????? 取50
泵前流速?? 0.872429m/s??????????????滿足要求
泵后流速?? 1.474404m/s????????????? 滿足要求
沿程損失計算
進水管長?????????????????????????? 8m
出水管長?????????????????????????? 320m
進水管???????????????????????????? Re83044.98
進水管摩擦系數(λ1)???????????????? 0.000771
進水管沿程損失(∑hf1)????????????? 0.051378m
出水管Re?????????????????????????? 138408.3
出水管摩擦系數(λ2)???????????????? 0.000462
出水管沿程損失(∑hf2)????????????? 5.91872m
小計?????????????????????????????? 5.970098m
局部阻力損失
閥門、管件??????? 個數?????? 阻力系數???? 局部阻力損失
帶濾網的底閥?????? 1??????????? 8.5??????????4.25
90°彎頭?????????? 1???????????0.75????????? 0.375
90°彎頭?????????? 1?????????? 0.75??????????0.375
蝶閥?????????????? 1?????????? 0.3???????????0.15
蝶閥?????????????? 1?????????? 0.3?????????? 0.6
止回閥???????????? 1?????????? 7.5??????????? 15
水表?????????????? 1??????????? 7???????????? 14
小計 ????????????????????????????????????? 34.75
合計 ??????????????????????????????????????44.72009778
由于污水處理區域與基坑1所處標高不同,因此加上標高差值10m,總揚程為55m。
離心泵:100-65-200