離心泵數(shù)據(jù)處理終結(jié)版

1、離心泵性能的測(cè)定設(shè)備主要參數(shù)兩取壓11垂H高度差mm320.0離心泵入1 1管徑mm33.4離心泵出丨1管徑mm20.4離心泵型號(hào)BL-4電機(jī)效率0.65揚(yáng)程m25流景mVh6渦輪流最計(jì)儀表系數(shù)次/升77.4原始數(shù)據(jù)實(shí)驗(yàn)序頻率f離心泵入【1處 真 空 度 -pl （險(xiǎn)）離心泵出丨1處 表 JFK P2 （陶 3）功率表讀數(shù)（kw）水溫/ C10.000.2260.4026.026.60.0010.2220.4326.0318.20.0020,2190.4626,0431.750.0030.2130.4926.2549.40.0040,2060.5426-166920.00450.1960.59

2、26.2780.20.0060.1900.6226.2896.250.00704790.6526-29109.90.0080-1710.6826310121.250.0090,1620.7026311130.250.010.1540.7226.312139.850.0110.1450.7326.213146.250.0120,1400.7326-414151.450.0130.1330.7426315159.450.0140,1260,7526,416165.150.0160.12007626.417170.90.0180.1140.7626.418180.80.020,1030.7726-4

3、19189.450.0220.0930.7726.420200.40.0240,0780.7826,5計(jì)算過(guò)程舉例（以第二組數(shù)據(jù)為例）:頻率f-Pl/MPaP 2/MPa功率水溫/t660.0010.2220.4326-0此時(shí)渦輪流量計(jì)輸出的脈沖頻率f=66Hz則該頻率下的體積流屋qv =6.6/77400 =8.5*10W/sP2 Pi=0.223MPa=273*10PaZ2-Zi=320.0mm=032mU訐4q7(TT *di)=4* 8,5*10 7(3.14*0.03342)=0,097 m/s 同理 U2=4 cu/(rr d/)=0260 m/sH=(Z2-Zi)+(P2-Pi)

4、/P g+(U2-u?)/2g=2115mN=043*0.65=0.28Kw2.數(shù)據(jù)處理：取平均溫度26.3*C,水密度p =996.702l<g/m實(shí) 驗(yàn) 序 號(hào)流量Qv(mVs)P 2P1(Pa)入H流速5 (m/s)出丨1流速U2(m/s)軸功率N(KW)揚(yáng)程H (m)效率n10226000000.2623.45753028 53E-O5223000O 0973730 261020 279523 15339690241230.0002352210000.2685130-7197810.29922.9683917-6504240.000412160000.4684231.255662

5、0.318522.50328.3203650.0006382100000.7288221.953691035121.9871239.067260.0008942005001.0209412.736750.383521.1758348.239870.0010361960001.183233,1717830.40320.8280252.328980.0012441860001.4200233.8065350.422519.9987857.5177490.001421790001.6214084.346370.44219.4754461.13457100.0015671710001.788864-7

6、952450.45518.836636337206110.0016831640001.9216425.1511810.46818.2754764.21326120.0018071560002.0632755.5308450.474517.6345765.61683130.001891520002.1576985.7839550.4745173508467.51562140-0019571460002.2344165-9896070-48116.8429166.95229150.002061400002.3524446 3059940.4875163994967,71806160.0021341

7、360002.4365396.531420.49416.1170868.024170.0022081320002.5213716.7588230.49415.840369.18354180.0023361230002.6674317.1503530.500515.1580869.12939190.0024481150002.7950487.4924460.500514.5590669.57416200.0025891020002.9565997.9255020.50713.5213867.47379fT/r P02&7010.42681.55cm20.826.95cm37.426.91

8、6.7cm49.926.92830cm56.826.949KPa69.227.16.6 KPa76,527.07.8 KPa88.227.08.9 KPa95.527.411.5 KPa106.727.4143 KPa120727.517-8 KPa141.827-5244 KPa156.727.530.1 KPa169.727.535-4 KPa180.127.539,2 KPa200.527.6467 KPa流*計(jì)標(biāo)定實(shí)驗(yàn)數(shù)據(jù)處理1夙始數(shù)據(jù)以流量計(jì)標(biāo)定第二組實(shí)驗(yàn)數(shù)據(jù)為例 此時(shí)渦輪流量計(jì)輸出的脈沖頻率f= 10.4Hz則該頻率下的體積流吊M77400 = 1°°/7740

9、0 = 0134L/s取平均水溫A27C.水的密度P =996,511kg>m 由則此時(shí)0134 X 1000C =0767雷諾數(shù)W 0.02X0.428X996.511 = 9980.74Re =0.8545 X 0.001數(shù)據(jù)列表如卜：前5組數(shù)振壓g用U型管圧養(yǎng)計(jì)測(cè)得.所用粘度為27°C水的粘度 M =0.8545 *10 Pa-s'表中壓差值已減去初值。頻率f水溫T/*C壓差A(yù)P/Kpa流最Vs/LsJ流速Um/s流最系數(shù)CRe026.70000010.426.80427920.7672259980.7420.826.90.50.2687

10、340.855840.854346199614837426.91.670.4832041.5388670.8405635892.2849-926.92.830-6447032.0531940.861515478883656.826.94.90.733852.3371020.74525654510.269.227.16.60,8940572.8473150.782329664103176.5277.80.9883723.1476820.79555473416.0288.2278,91,1395353,6290920.858675846443695.527.411.51.233853.9294590.81791891650.07106.727.41431.37855343902960.819505102398.6120.727.517.81,5594324,9663420.830908115834.2141.827.524.41.8320415.8345270.833752136083.6156727.53012,0245486,4476040.829547150382.9