各类水景流量扬程计算.doc

各类水景水力流量扬程计算（150818收集）A景区一水力计算 跌泉流量计算Q=cmb(2g)0.5H1.5m取0.36，c取1，初选H=0.2kpa，测量得L=9.0m，Lt=1.6m，b=0.4m则Q1=0.36*0.4*4.43*0.09=0.057 m3/s单宽流量q=6.3*10-3 m3/(sm)，则D=40.11*10-6/0.63=6.37*10-5Ld=4.30*D0.27*p=0.127m，0.1 Ld 2/3Lt,，经校核，跌水景水舌长度lt在合理范围内，因此，选定的流量可作为选用跌水景循环水泵的依据。 同理求Q2m取0.37，c取1，初选H=0.2kpa，测量得L=8.4m，Lt=1.6m，b=0.4m则Q2=0.37*0.4*4.43*0.09=0.059 m3/s单宽流量q=0.059/8.4=7.0 *10-3m3/(sm)，则D=4.9*10-5/0.63=7.78*10-5水蛇Ld=4.30*0.078*0.4=0.134m，可取故Q=Q1+Q2=0.057+0.059=0.116 m3/s，考虑到二级跌泉接收部分一级的水量，故取Q=0.1 m3/s即Q=100L/s，H0=21.65-20.84+1=1.81mq(L/s)DN（mm）L（m）h（m）V（m/s）011002001.70.0653.1212572001.60.0221.78h=0.065+0.025=0.09m，故扬程为1.9m 同上求泵二，m取0.36，c取1，初选H=0.2kpa，测量得L=6.0m，Lt=1.6m，b=0.4mQ=0.057 m3/s单宽流量q=0.057/6=0.0095=9.5*10-3 m3/(sm)，则D=14.33*10-5Ld=4.30*D0.27*p=0.158m可取，扬程H=1.81+0.045=1.86mA 景区二水力计算同上L=7.8m，初选Q=0.057 m3/s单宽流量q=7.3*10-3 m3/(sm)，则D=5.3*10-5/0.63=8.48*10-5Ld=4.30*D0.27*p=0.137m，符合要求扬程H=1.29+0.045=1.33m选泵IS100-80-125，流量60m/h，扬程4m，功率1.5kw/h跌水池m取0.36，c取1，初选H=0.2kpa，测量得L=5.5m，Lt=1.5m，b=0.6m，p=0.85Q=0.36*0.6*0.43*0.09=8.61*10-2单宽流量q=1.56*10-2 m3/(sm) ，则D=2.45*10-4/0.63=3.9*10-4Ld=4.30*D0.27*p=0.44m0.1 Ld 2/3Lt故可取Q=86 L/s，Dn=200mm，h=0.09m，扬程H=1.62+0.09=1.71m，选泵为离心清水泵；XA65/13B 流量86.5 m3/s，扬程13.7m，功率7.5kw/h卵石涌泉涌泉高度0.4m，喷头选用YQ-201，额定流量6 m3/h，喷头直径DN25，个数15个，管材：钢衬塑复合管，总流量90 m3/h，选取最不利管段计算0112233445566778q(L/s)2511.6710.008.336.675.003.331.67DN（mm）12510010010010010010080L（m）0.81.51.51.51.51.51.51.5h（m）0.0240.0300.0230.0160.0110.0060.0030.003V（m/s）2.011.431.221.020.820.610.410.36故得到h=0.116m则水泵扬程H=0.116+20.95-20.020+0.4=1.45m，Q=90 m3/h故选泵IS100-80-125A，额定流量93.5 m3/h，扬程17m，功率7.5kw/h特色汀步喷泉 跌泉跌泉流量计算Q=cmb(2g)0.5H1.5m取0.36，c取1，初选H=0.2kpa，测量得L=19.0m，Lt=0.45m，b=0.25m，P=0.3m则Q1=0.36*0.25*4.43*0.09=0.0359m3/s单宽流量q=1.9*10-3 m3/(sm)，则D=3.57*10-6/0.02646=13.48*10-5Ld=4.30*D0.27*p=0.1163m，0.1 Ld 2/3Lt,，经校核，跌水景水舌长度lt在合理范围内，因此，选定的流量可作为选用跌水景循环水泵的依据。 喷泉6个喷高1.2m，一个喷高0.6m，一个喷高0.4m即YQ-101喷头6个，额定流量9 m3/h；YQ-201喷头2个，额定流量6 m3/h故需总流量66 m3/h取最不利管段计算：H0=2.65+0.6=3.25m，L=4.9m采用氯化聚氯乙烯给水管01122334455667q(L/s)18.3315.8313.3310.837.505.002.50De（mm）1401401251251109075L（m）1.50.20.20.40.40.20.2h（m）0.0320.0030.0040.0060.0050.0030.002V（m/s）1.61.41.41.21.01.00.8水泵扬程H=3.25+0.042=3.293.3m，选泵清水离心泵XA65/20，额定流量66 m3/h，扬程13.1m，功率4kw/h旱喷总流量Q=330 m3/h，采用氯化聚氯乙烯给水管（PVC-C），选择最不利管段计算q(L/s)De（mm）L（m）h（m）V（m/s）0191.671601.00.2216.2731268.331600.50.0644.6762360.001600.50.0504.1063446.671600.50.0323.1944545.001600.50.0303.085643.331600.50.0282.9656741.671600.50.0262.8527833.331600.50.0172.2818925.001600.50.0101.71191016.671400.50.0091.48910118.331100.50.0081.20511126.6711