1、l=J|三三|化工原理實(shí)驗(yàn)-流量計(jì)校核實(shí)驗(yàn)報(bào)告流量計(jì)校l=jw核一、實(shí)驗(yàn)操作熟悉實(shí)驗(yàn)裝置，了解各閥門的位置及作用。對(duì)裝置中有關(guān)管道、導(dǎo)壓管、壓差計(jì)進(jìn)行排氣，使倒U形壓差計(jì)處于工 作狀態(tài)。對(duì)應(yīng)每一個(gè)閥門開度，用容積法測(cè)量流量，同時(shí)記下壓差計(jì)的讀數(shù)， 按由小到大的順序在小流量時(shí)測(cè)量8-9個(gè)點(diǎn)，大流量時(shí)測(cè)量56個(gè) 點(diǎn)。為保證標(biāo)定精度，最好再?gòu)拇罅髁康叫×髁恐貜?fù)一次，然后取其 平均值。測(cè)量流量時(shí)應(yīng)保證每次測(cè)量中，計(jì)量桶液位差不小于100mm或測(cè)量 時(shí)間不少于40s。二、數(shù)據(jù)處理數(shù)據(jù)記錄計(jì)量水箱規(guī)格：長(zhǎng)400mm ；寬300mm管徑 d (mm)： 25孔板取喉徑d0 (mm)： 15.347查出實(shí)驗(yàn)溫

2、度下水的物性：密度 P = 996.2542 kg/m3 粘度 u = 0.000958 PaS數(shù)據(jù)處理Re _ du p _ dp * 4V _ 4Vp日 日 兀d 2 兀曰dV _ u A _ C A 詢 /p貝UC =o0 00 00、；2Ap / p孔板流量計(jì)試驗(yàn)數(shù)據(jù)處理左/cm右/cmAR/m時(shí)間 t/s水箱 高度 h/cm體積V/m3流量 Qv/m3 s-i流速V/m s-i空流系數(shù)C0雷min57.057.0Qv=h.S/tV= 4qvn d 2V=C0.即Rmax33.145.3133.746.30.126406.70.0081932.05E-041.10780.7049238

3、.247.10.089416.10.0074541.82E-040.98330.7445340.648.80.082415.70.0070221.71E-040.92640.7307442.548.90.064405.20.0064061.60E-040.86620.7734543.849.40.056414.90.0060371.47E-040.79640.7601645.650.30.047414.50.0055441.35E-040.73130.7620747.951.30.034413.90.0048051.17E-040.63380.7764849.452.20.028413.50.

4、0043121.05E-040.56880.7678951.653.30.017412.90.0035738.71E-050.47130.8165150.952.80.019403.00.0036969.24E-050.49980.8189248.751.60.029413.70.0045581.11E-040.60130.7976347.150.80.037404.00.0049281.23E-040.66630.7825444.749.90.052414.70.005791.41E-040.76380.7566542.548.80.063415.20.0064061.56E-040.845

5、10.7605640.848.00.072415.60.0068991.68E-040.91010.7661737.647.10.095416.30.0077621.89E-041.02390.7503835.346.20.109416.90.0085012.07E-041.12140.7672933.445.60.122406.70.0082542.06E-041.11610.7218孔板流量計(jì)R-Qv雙對(duì)數(shù)坐標(biāo)圖lgQvIIIIIIIIU-0.600-4.100 -4.050 -4.000 -3.950 -3.900 -3.850 -3.800 -3.750 -3.700 -3.(Rg!-

6、2.000孔板流量計(jì)C0-Re圖0.8400數(shù)0.8200系 流0.8000空0.78000.76000.74000.72000.70000.6800y = -0.2058x + 1.6043.83.94.14.24.3雷諾數(shù)的對(duì)數(shù)logRe文丘里流量計(jì)實(shí)驗(yàn)數(shù)據(jù)處理左/cm右/cmAR/m時(shí)間 t/s水箱高 度 h/cm體積V/m3流量 Qv/m3 s-1流速V/m s-1空流系數(shù)C 0雷min66.366.3Qv=h.S/tV= 4qvd2V=C .雖0 J2 gRRmax19.057.8129.662.70.3314017.700.02185.45E-044.4721.756234.164

7、.10.34116.360.02024.92E-044.0321.663340.366.10.2584014.800.01824.56E-043.7391.663444.466.30.2194013.400.01654.13E-043.3851.634548.466.90.1853610.900.01343.73E-043.0601.607652.567.10.1464011.800.01453.63E-042.9811.762756.566.40.099419.260.01142.78E-042.2821.639860.565.70.052407.000.00862.16E-041.7681

8、.752163.365.30.02404.950.00611.52E-041.2511.997259.465.70.063417.950.00982.39E-041.9601.763356.466.20.098409.480.01172.92E-042.3951.728451.966.40.1454011.020.01363.39E-042.7841.651545.365.40.2014013.800.01704.25E-043.4861.757640.765.20.2454013.680.01694.21E-043.4561.577737.065.00.284015.750.01944.85E-043.9791.699832.165.20.3314116.400.02024.93E-044.0421.587927.163.90.3684017.300.02135.33E-044.3711.627lgQv文丘里流量計(jì)R-Qv雙對(duì)數(shù)坐標(biāo)圖-0.800650-2.000文丘里流量計(jì)C0-R e單對(duì)數(shù)坐標(biāo)圖2.500-02.000-y = -0.4311x + 3.6669一- 土二1.5001.000