自來水管道流量一覽表

自來水管道流量一覽表管徑經(jīng)驗(yàn)流量一覽戔管徑經(jīng)濟(jì)流量經(jīng)濟(jì)流量經(jīng)濟(jì)流量（F/d）經(jīng)濟(jì)流速Cm/s）備比最低最高景低量高最低平均最與最俏最高150,00020101115015寸20j00,。時(shí)3010202701W4寸250&00050203242011寸320L00080305269011-1/4寸如P00.0013'050S1109011-1/■號(hào)寸5000.002007012717001.?寸7000,00380140249332018000,0050018032643401100ro0,01.1004006789S001.412500,020620106014840L41500,01034090960152621600.621.422000.030.059018421602713441B0.81.623OQ0,050.11LS44034416610496720.721.59傾OT110,23403825567210S522D04C0.891.856000,230.518351822200^02-141743?尊0.82L79市政給水管管徑市政給水管管徑，一般用PE,口徑從20mm-620mm。一般是按水泵出口口徑選配水管的管徑；水泵連接的出水管不是管徑越大越好，選的管徑能滿足流量的要求而且阻力損失又合理時(shí)為好。鍍鋅管是按內(nèi)徑計(jì)算的，內(nèi)徑15mm=4分管,20mm=6分,25mm=1寸;PPR管/鋁塑管則是按內(nèi)徑計(jì)算的,16mm也就相當(dāng)于3分管,20mm差不多相當(dāng)于4分的。鍍鋅管徑一般工程上計(jì)算時(shí)，水管路，壓力常見為0.1--0.6MPa，水在水管中流速在1--3米/秒，常取1.5米/秒。流量=管截面積X流速=0.002827X管徑A2X流速（立方米/小時(shí)尸2:平方。管徑單位：mm管徑=sqrt（353.68X流量/流速）；sqrt:開平方；飽和蒸汽的公式與水相同，只是流速一般取20--40米/秒。水流量計(jì)算表DN15、DN25、DN50管道的流量各為多少？DN15、DN25、DN50管徑的截面積分別為：DN15:152*3.14/4=176.625平方毫米，合0.0177平方分米。DN25:252*3.14/4=490.625平方毫米，合0.0491平方分米。DN50:502*3.14/4=1962.5平方毫米，合0.1963平方分米。設(shè)管道流速為/=4米/秒，即V=40分米/秒，且1升=1立方分米，則管道的流量分別為截面積乘以流速）：DN15管道：流量0=0.0177*40=0.708升/秒，合2.55立方米/小時(shí)。DN25管道：流量0=0.0491*40=1.964升/秒，合7.07立方米/小時(shí)。DN50管道：流量0=0.1963*40=7.852升/秒，合28.27立方米/小時(shí)。注：必須給定流速才能計(jì)算流量，上述是按米/秒計(jì)算的。管徑與流速、流量的計(jì)算方法一虹程上計(jì)算時(shí)，水管路，壓力^為0.1--0.6MPa水在水管中流速在~3米渺，常取1.5米/秒。流量=管截面積x流速=0.002827：管密2x流速（立方米小時(shí)）水壓在0.2mpa，流量是15立方每小時(shí)，要用的管徑是多少0.2Mpa的水壓全部轉(zhuǎn)換為動(dòng)能，速度為20m/s,體積流量為15mA3/h，可換算為0.0042mA3/s,則管道面積為：0.0042/20=0.00021m〃2=210mmA2，管路直徑為16.3mm,考慮到壓力損失，選擇20mm的管路就差不多了流量=流速流通面積。而根據(jù)管道水流量計(jì)算公式0=（H/sL）1/2流量與管道長度存在關(guān)系，請(qǐng)問怎么理解？流量=流速過流面積根據(jù)管道水流量計(jì)算公式0=VXSV---液體流動(dòng)的流速S---過流斷面的面積L---是流量的單位為每秒升流量與管道長度不存在關(guān)系它指的是單位時(shí)間內(nèi)通過某一斷面液體的數(shù)量，與長度沒有關(guān)系。

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管徑/流速/流量對(duì)照表管錚流量m3/h0一4站U-6in在O.Sm^s1.0nif，sl.tasL6in咯LSm^s2.0ruf，s2.2￡￡^S[一4tn「s2一6施2.Sm,,s3.0m;s2DG.50.70.91.11.41.61-62,02.32.52.72?93.23.425C.71.11,41.82.12.52.63.2S.53.94.24.64.m5.3321.21.73.32.93.54.14.65.25.S6.4e.97.58.18.7401.82.73.64.5S.4e.a7.2S,.1&.01C.010.911.B12.713.5502.34.2G.77.1S.59.911.312-714.115.637.018.419.821.2654.S7.29.6.11-9W.3：1C.719.121,523.926.323.731.13二435.8307.210?914.518.121.7：25.329.032?636.239.843.447,0SO.754.31C011.317,023.638.333.939.645.250.956.562.267.973.579.264.c12517.726-535.344.253.061.970..779.5ae.497.2i0CP0114.9L23.7132.515025.43S.250.963.676.3：39.1101.8114.5127.2140.0152.7tOc.4178.1190.92C045.2"9皿S113.1135.715S.318L0Eos.e226.2243.8STI.4294.1aie.7339.325070.710C.0141.4176.7212.1247.4282.7318.13SS.4363.8■4M.1459,51&4.B530.13C0101.S152.7203.6254.5505.435C.3407..1458?0□06.9559-.S6L0..7661.0712.5763.4350133.5207.8277.154：&.4415.6484.554.2523.4B92.77-62.0831.3900?5969.31-339.14C01S1.0271.4361..9452.4542.S633.3733.6B14.3304.8995.310B5.7LL76a21266.71357.2450蹈土。345.5458.0572-6S87.1801.6916.11D30.61145.11259.01374..1L48S.61603.21717.75C0232.7424.1565.-5706.9S4S.2989.61131.01272.31413.71555.1169C.51837.S1979.22120.36C0407.1610.7314.31317.91221.4Z425.0132S.61B32.22335.72239.32442.926<fi.52SS0.03053.S皆中DM，流速202d32405065如1001261&0200260300360400閉式系統(tǒng)&.5-0.&0.6-0.74.7-D.S0.-9-10.9-1.21.1-1.41.2-1.61.8-1.S1.