【《某市净水厂输配水管网工程设计案例》6500字（论文）】

某市净水厂输配水管网工程设计案例目录TOC\o"1-3"\h\u19638某市净水厂输配水管网工程设计案例 1231911.1供水的方案 1188091.2管网的定线要求 1112501.3设计流量的分配及管径的设计 2197451.3.1节点的设计流量分配 2199581.3.2节点流量计算 4187481.4管段管径设计 454201.5管网的平差规则 5105771.6管网设计校核 241.1供水的方案观察莱西市的地理形状，地势平缓，各地方的地面高程并没有太大的差别。单位甲乙丙丁与城市人民的用水，在除了需要符合相关的规范标准外，没有很多需要去改进的地方。所以供水的方法都一样，不搞特殊。在市中心这些用水量很高的地方则官网的分配就会密集一些。莱西市的西面会有一条河流流经。河水的水位高度变化并不大、能够让城市都不会缺水，所以这一条河流就被选定为莱西市的水源地。所以，净水厂的选址最终就确定在了莱西市西边偏上一些的河流附近，相对的一些构筑物也会选择在这里构建。净水厂的位置靠近河流，这样的设置方式就可以节省不必要的开支。1.2管网的定线要求（1）设计的管道不能太长，成本大，损失多；（2）要依照规范手册来设置高于两个以上的自来水的管数，莱西市的发生事故时的用水量与总量的比例是百分之七十。（3）在运输水时，管道不能太满，气压不可以不是正数。1.3设计流量的分配及管径的设计1.3.1节点的设计流量分配莱西市的输配水方式选择了环状的，因为这样较为合理如图7-1所示：图7-1莱西市给水管网平面布置图若管道没有经过房子等构筑物那就没有长度，只有一侧在输配水的管道长度是q50％，两侧都在输配水的管道的长度就是图内所画的实际的长度。每一段管段的长和配水时的长，如表7-1所示：表7-1每个管段的长度以及配水的长度表管段编号1（1-2）2（2-3）3（3-4）4（4-5）5（5-8）6（8-9）7（10-9）8（4-10）管段长度（m）配水长度（m）管段编号9（11-10）10（6-11）11（3-6）12（2-7）13（7-6）14（7-12）15（12-11）16（11-14）管段长度（m）配水长度（m）管段编号17（14-13）18（9-13）管段长度（m）配水长度（m）用水最高的那一天的最高用时间段的水量如表7-2所示：表7-2最高日最高时的集中用水流量表集中用水用户名称甲乙丙丁集中用水量56.551.929.966.4所处位置节点编号2487如果想要对节点流量和沿线的流量进行计算那就需要和莱西市城市的管网平布置面图来看。所以我们就可以知道每一段管段的全部的输配水的长度是。（1）管网比流量的计算如（7-1）所示：（7-1）式中——给水管网的比流量，L/(s•m）；——用水最多的时候的量，L/s；——用水大户集聚用水，L/s；——一共输配水的长度，m。所以我们就可以知道用水最高的那一天的最高用时间段的水量是。所以我们又能知道了比流量是。（2）沿线流量根据各管段的配水长度计算出各管段的沿线流量，见表7-3。1.3.2节点流量计算表7-3最高时管段沿线流量计算表管段编号配水长度（m）沿线流量（L/s）节点设计流量计算集中流量（L/s）沿线流量（L/s）供水流量（L/s）节点流量（L/s）1（1-2）002（2-3）3（3-4）4（4-5）5（5-8）6（8-9）7（10-9）8（4-10）9（11-10）10（6-11）11（3-6）12（2-7）13（7-6）14（7-12）15（12-11）--16（11-14）--17（14-13）--18（9-13）--合计流量在分配时必须满足许多的要求，输配水时不能过于浪费，成本也不能过高，要合理。1.4管段管径设计管段的直径和城市的流量数值如（7-2）所示：（7-2）式中——各段管子的直径，m；——各个管段的初分配流量，m3/s；——经济流速，m/s。初次分配的流量和输配水管道管径计算值见表7-4：表7-4流量的初次分配及管径计算值表管段编号管段长度（m）初次分配流量（L/s）经济流速（m/s）设计管径（mm）1000i水头损失（m）14001489.121.1313000.9820.3926816.6540.90.822504.5931.2937658.3546.510.643002.1817.5948573.753.380.713002.6526.55515993.196.360.9444004.369.3464954.429.410.602502.7813.73711766.671.160.713502.1226.94819814.1139.480.934003.4963.53916680.899.480.954002.439.161015257.880.750.813502.7337.091111569.263.480.543501.6418.47125180.531.140.632502.6313.691315574.592.850.924002.030.83149242.6555.620.773003.1427.051521292.3134.750.964003.2566.201612416.875.880.763502.3231.671713921.683.460.843503.1343.12189234.455.360.773003.2427.921.5管网的平差规则管网进行平差后的结果如表7-5所示：表7-5管网平差环号管段管长管径初步分配流量qh1000ihij12-36916.65250-41.9-31.294.490.873-610679.2350-65.48-19.771.840.217-615574.740094.8530.952.00.432-75180.625032.1414.692.830.4121.171.98环号管段管长管径初步分配流量qh1000ihij23-47658.35300-47.55-17.792.280.354-1019814.1400-129.48-60.533.090.4911-1016681.840093.4838.142.40.386-1113557.635080.6538.092.730.423-610679.235064.4819.471.740.3216.782.56续表7-5环号管段管长管径初步分配流量qh1000ihij34-58563.7300-51.38-23.552.750.465-815893.1400-95.36-68.344.30.728-94934.4250-29.61-12.732.580.4310-911686.635070.1225.942.220.374-1019914.1400119.4861.533.090.51-17.152.49环号管段管长管径初步分配流量qh1000ihij47-615474.7400-92.85-30.952.00.336-1113457.8350-80.75-38.092.830.4712-1120792.3400124.7568.203.280.557-129252.6530055.5229.053.140.5228.211.87环号管段管长管径初步分配流量qh1000ihij59-139227.4300-55.36-28.973.140.5214-1313909.635083.4642.153.030.5111-1412646.835075.8831.872.520.4211-1016580.8400-99.48-38.142.30.3810-911686.6350-70.12-25.942.220.37-19.032.20环号管段管长管径第一次校正qh1000ihij12-36816.65250-47.86-41.856.140.873-610579.2350-70.44-23.492.220.337-615474.740085.8925.841.670.302-75190.625024.189.651.860.40-29.851.9环号管段管长管径第一次校正qh1000ihij23-47758.35300-50.55-20.562.650.414-1019914.1400-123.48-65.323.280.5311-1016580.840095.4833.822.040.35续表7-526-1113457.835076.7552.223.880.683-610579.235059.4817.241.630.2917.42.26环号管段管长管径第一次校正qh1000ihij34-58563.7300-47.94-20.302.370.425-815893.1400-91.92-30.041.890.338-94934.4250-26.17-10.162.060.3910-911686.635073.5628.052.40.384-1019914.1400122.9265.323.280.5332.872.05环号管段管长管径第一次校正qh1000ihij47-615474.7400-100.39-35.282.280.356-1113457.8350-88.29-45.353.370.5112-1120792.3400117.2162.172.990.537-129252.6530047.9821.932.370.463.471.85环号管段管长管径第一次校正qh1000ihij59-139227.4300-51.03-25.382.750.5014-1313909.635087.7945.903.30.5211-1412646.835080.2135.792.830.4511-1016580.8400-95.15-33.822.040.3610-911686.6350-65.79-22.671.940.34-0.182.17环号管段管长管径第二次校正qh1000ihij12-36816.65250-40-29.934.390.753-610579.2350-62.58-18.941.790.307-615474.740093.7530.331.960.322-75190.625032.0415.5730.49-2.961.86续表7-5环号管段管长管径第二次校正qh1000ihij23-47758.35300-54.4-23.663.050.434-1019914.1400-127.33-69.303.480.5411-1016580.840091.6331.341.890.346-1113457.835072.934.722.580.483-610579.235055.6315.231.440.27-11.672.07环号管段管长管径第二次校正qh1000ihij34-58563.7300-55.96-26.893.140.485-815893.1400-99.94-34.962.20.358-94934.4250-34.19-16.483.340.4810-911686.635065.5422.671.940.354-1019914.1400114.957.752.90.502.092.16环号管段管长管径第二次校正4qh1000ihij7-615474.7400-101.33-35.282.280.356-1113457.8350-89.23-46.293.440.5212-1120792.3400116.2762.172.990.537-129252.6530047.0421.932.370.472.521.87环号管段管长管径第二次校正qh1000ihij59-139227.4300-51.03-25.382.750.5014-1313909.635087.7945.903.30.5211-1412646.835080.2135.792.830.4511-1016580.8400-95.15-33.822.040.3610-911686.6350-65.79-22.671.940.34-0.182.17环号管段管长管径第三次校正qh1000ihij12-36816.65250-39.2-29.244.290.753-610579.2350-61.78-18.301.730.30续表7-57-615474.740094.5525.841.670.272-75190.625032.8415.993.080.49-5.721.80环号管段管长管径第三次校正qh1000ihij23-47758.35300-51.58-21.342.750.414-1019914.1400-124.51-67.113.370.5411-1016580.840094.4533.822.040.366-1113457.835075.7233.912.520.453-610579.235058.4516.721.580.29-3.992.04环号管段管长管径第三次校正qh1000ihij34-58563.7300-56.44-27.833.250.495-815893.1400-100.42-34.962.20.358-94934.4250-34.67-16.923.430.4910-911686.635065.0622.671.940.354-1019914.1400114.4257.752.90.500.702.18环号管段管长管径第三次校正qh1000ihij47-615474.7400-102-35.282.280.356-1113457.8350-89.9-46.293.440.5112-1120792.3400115.660.302.90.527-129252.6530046.3721.102.280.45-0.181.84环号管段管长管径第三次校正qh1000ihij59-139227.4300-51.03-25.382.750.5014-1313909.635087.7945.903.30.5211-1412646.835080.2135.792.830.4511-1016580.8400-95.15-33.822.040.3610-911686.6350-65.79-22.671.940.34-0.182.17续表7-5环号管段管长管径第四次校正qh1000ihij12-36816.65250-37.62-27.203.990.723-610579.2350-60.2-17.771.680.307-615474.740096.1332.812.120.342-75190.625034.4217.343.340.505.171.86环号管段管长管径第四次校正qh1000ihij23-47758.35300-50.6-20.562.650.414-1019914.1400-123.53-65.323.280.5311-1016580.840095.4333.822.040.356-1113457.835076.734.722.580.453-610579.235059.4317.241.630.29-0.092.03环号管段管长管径第四次校正qh1000ihij34-58563.7300-56.6-27.833.250.495-815893.1400-100.58-36.242.280.368-94934.4250-34.83-16.923.430.4910-911686.635064.922.091.890.344-1019914.1400114.2657.752.90.51-1.152.18环号管段管长管径第四次校正qh1000ihij47-615474.7400-102-35.282.280.356-1113457.8350-89.9-46.293.440.5112-1120792.3400115.660.302.90.527-129252.6530046.3721.102.280.45-0.181.84环号管段管长管径第四次校正qh1000ihij59-139227.4300-51.03-25.382.750.5014-1313909.635087.7945.903.30.5211-1412646.835080.2135.792.830.45续表7-511-1016580.8400-95.15-33.822.040.3610-911686.6350-65.79-22.671.940.34-0.182.17环号管段管长管径第五次校正qh1000ihij12-36816.65250-39.01-29.244.290.753-610579.2350-61.59-18.301.730.307-615474.740094.7431.572.040.332-75190.625033.0316.453.170.500.481.88环号管段管长管径第五次校正qh1000ihij23-47758.35300-50.6-20.562.650.414-1019914.1400-123.53-65.323.280.5311-1016580.840095.4333.822.040.356-1113457.835076.734.722.580.453-610579.235059.4317.241.630.29-0.092.03环号管段管长管径第五次校正qh1000ihij34-58563.7300-56.34-27.833.250.495-815893.1400-100.32-36.242.280.368-94934.4250-34.57-16.923.430.49续表7-5310-911686.635065.1622.671.940.354-1019914.1400114.5255.962.810.49-2.362.18环号管段管长管径第五次校正qh1000ihij47-615474.7400-102-35.282.280.356-1113457.8350-89.9-46.293.440.5112-1120792.3400115.660.302.90.527-129252.6530046.3721.102.280.45-0.181.84续表7-5环号管段管长管径第五次校正qh1000ihij59-139227.4300-51.03-25.382.750.5014-1313909.635087.7945.903.30.5211-1412646.835080.2135.792.830.4511-1016580.8400-95.15-33.822.040.3610-911686.6350-65.79-22.671.940.34-0.182.17环号管段管长管径第六次校正qh1000ihij12-36816.65250-39.14-29.244.290.753-610579.2350-61.72-18.301.730.307-615474.740094.6131.572.040.332-75190.625032.916.453.170.500.481.88环号管段管长管径第六次校正qh1000ihij23-47758.35300-50.6-20.562.650.414-1019914.1400-123.53-65.323.280.5311-1016580.840095.4333.822.040.356-1113457.835076.734.722.580.453-610579.235059.4317.241.630.29-0.092.03环号管段管长管径第六次校正qh1000ihij34-58563.7300-55.81-27.833.250.505-815893.1400-99.79-34.962.20.358-94934.4250-34.04-15.643.170.4610-911686.635065.6922.091.890.344-1019914.1400115.0557.752.90.501.402.15环号管段管长管径第六次校正qh1000ihij47-615474.7400-102-35.282.280.356-1113457.8350-89.9-46.293.440.51续表7-512-1120792.3400115.660.302.90.527-129252.6530046.3721.102.280.45-0.181.84环号管段管长管径第六次校正qh1000ihij59-139227.4300-51.03-25.382.750.5014-1313909.635087.7945.903.30.5211-1412646.835080.2135.792.830.4511-1016580.8400-95.15-33.822.040.3610-911686.6350-65.79-22.671.940.34-0.182.17环号管段管长管径第七次校正qh1000ihij12-36816.65250-39.27-29.244.290.743-610579.2350-61.85-18.301.730.307-615474.740094.4831.552.040.332-75190.625032.7715.993.080.49-0.011.86环号管段管长管径第七次校正qh1000ihij23-47758.35300-50.6-20.562.650.414-1019914.1400-123.53-65.323.280.5311-1016580.840095.4333.822.040.356-1113457.835076.734.722.580.453-610579.235059.4317.241.630.29-0.092.03环号管段管长管径第七次校正qh1000ihij34-58563.7300-56.14-27.833.250.505-815893.1400-100.12-36.242.280.368-94934.4250-34.37-16.483.340.4810-911686.635065.3622.671.940.354-1019914.1400114.7257.752.90.50-0.132.19续表7-5环号管段管长管径第七次校正qh1000ihij47-615474.7400-102-35.282.280.356-1113457.8350-89.9-46.293.440.5112-1120792.3400115.660.302.90.527-129252.6530046.3721.102.280.45-0.181.84环号管段管长管径第七次校正qh1000ihij59-139227.4300-51.03-25.382.750.5014-1313909.635087.7945.903.30.5211-1412646.835080.2135.792.830.4511-1016580.8400-95.15-33.822.040.3610-911686.6350-65.79-22.671.940.34-0.182.17剩下的平差由平差软件完成到处数据如下，见表7-6，表7-7：表7-6管段数据表管段编号长度（m）管材管径（mm）流量（L/s）流速（m/s）水头损失（m）千米水头损失（m）长度分配长度系数Ag1-Ag2400焊接钢管13002.41.130.390.98不供水0Ag2-Ag36816.65焊接钢管25039.270.8229.244.29单侧供水0.5Ag3-Ag47758.35焊接钢管30050.60.6420.562.65单侧供水0.5Ag4-Ag58563.7焊接钢管30056.140.7127.833.25单侧供水0.5Ag5-Ag815893.1焊接钢管400100.120.9436.242.28单侧供水0.5Ag8-Ag94934.4焊接钢管25034.370.616.483.34双侧供水1Ag10-Ag911686.6焊接钢管35065.360.7122.671.94双侧供水1Ag4-Ag1019914.1焊接钢管400123.530.9365.323.28双侧供水1A11-Ag1016580.8焊接钢管40095.430.9533.822.04双侧供水1A6-Ag1113457.8焊接钢管35076.70.8134.722.58双侧供水1Ag3-Ag610579.2焊接钢管35059.430.6417.241.63单侧供水0.5Ag2-Ag75190.6焊接钢管25032.770.6315.993.08双侧供水1Ag7-Ag615474.7焊接钢管40094.480.9231.552.04单侧供水0.5Ag7-Ag129252.65焊接钢管30046.370.7721.12.28双侧供水1Ag12-Ag1120792.3焊接钢管400115.60.9660.32.90双侧供水1Ag11-Ag1412646.8焊接钢管35080.210.7635.792.83单侧供水0.5Ag14-Ag1313909.6焊接钢管35087.790.8445.93.30双侧供水1Ag9-Ag139227.4焊接钢管30051.030.7725.382.75双侧供水1表7-7节点数据计算表节点编号地面高程（m）服务水头（m）自由水头（m）节点水压（m）分配流量（L/s）集中流量（L/s）节点流量（L/s）供水流量（L/s）控制点Ag140.502875.69116.190001489.12-Ag238.832858.7997.6264.9228.964.920-Ag337.962851.2089.16166.7450.9166.740-Ag438.102835.7873.88108.710108.710-Ag539.022842.5681.58129.8755.5129.870-Ag631.702839.4471.14118.540118.540-Ag731.402844.1075.5089.78089.780-Ag831.822841.0472.8662.49062.490-Ag930.552844.6275.17127.290127.290-Ag1031.502826.4857.98159.350159.350-Ag1130.042822.6852.72222.170222.170-Ag1231.192826.0757.2690.14090.140-Ag1331.602831.5463.1469.41069.410是Ag1438.852833.5872.4379.67079.670-在结束了管网平差以后，使得莱西市的管网设计更为合理了。1.3管网设计校核输配水管网的设计流量不包括消防水量，因此，发生火灾时，需要考虑其他消防流量。当消防条件大时，消防流量大，无法满足一般用户的用水量，因此消防水是主要来源。出于安全原因，流量是根据最大耗水量与火灾流量之和计算得出的，服务水头仅需要满足火灾节点的要求。依据莱西市的实际情况，设一次火灾的所需要的灭火流量为45L/S，火灾次数为两次，且两次火灾同时发生。消防检查要考虑的灭火流量为，将灭火流量添加到控制点和集中用水的用户的节点上。每个消防节点都需要增加了45L/s的灭火流量，清水池供水量相应的增加了90L/s。在此设计中，选择3节点和5节点作为消防节点。应根据低压消防控制，即10m水柱的自由水压力，只需要考虑灭火节点的服务头。重新分配流量后，每个管段的流量调整如表7-8所示，并进行消防校核的管网平差：表7-8消防校核的管网平差结果计算表环号管段管长管径初步分配流量qh1000ihij12-36816.65250-45.9-38.585.660.84续表7-83-610579.2350-68.48-22.002.080.327-615474.740097.8532.812.120.342-75190.625036.1418.893.640.52-8.892.02环号管段管长管径初步分配流量qh1000ihij23-47758.35300-52.55-21.722.80.414-1019914.1400-124.48-65.723.30.5311-1016580.8400104.4839.632.390.386-1113457.835085.7542.393.150.493-610579.235068.4822.002.080.3216.592.14环号管段管长管径初步分配流量qh1000ihij34-58563.7300-55.38-26.383.080.485-815893.1400-100.36-35.282.220.358-94934.4250-34.61-16.583.360.4810-911686.635075.1228.872.470.384-1019914.1400124.4865.723.30.5316.342.22环号管段管长管径初步分配流量qh1000ihij47-615474.7400-97.85-32.652.110.336-1113457.8350-85.75-42.393.150.4912-1120792.3400129.7574.233.570.577-129252.6530059.5232.573.520.5531.751.95环号管段管长管径初步分配流量qh1000ihij59-139227.4300-60.36-33.313.610.5514-1313909.635088.4646.463.340.5311-1412646.835080.8835.792.830.4411-1016580.8400-104.48-39.632.390.3810-911686.6350-75.12-28.872.470.38-19.562.28续表7-8环号管段管长管径第一次校正qh1000ihij12-36816.65250-43.7-35.175.160.803-610579.2350-66.28-20.741.960.317-615474.7400100.0534.042.20.342-75190.625038.3421.544.150.56-0.322.02环号管段管长管径第一次校正qh1000ihij23-47758.35300-60.31-28.013.610.464-1019914.1400-128.36-69.503.490.5411-1016580.8400100.636.982.230.376-1113457.835081.8738.892.890.483-610579.235064.619.781.870.31-1.862.15环号管段管长管径第一次校正qh1000ihij34-58563.7300-59.06-29.723.470.505-815893.1400-104.04-37.672.370.368-94934.4250-38.29-19.984.050.5210-911686.635071.4426.292.250.374-1019914.1400120.862.133.120.511.062.27环号管段管长管径第一次校正qh1000ihij47-615474.7400-105.99-37.912.450.366-1113457.8350-93.89-50.203.730.5312-1120792.3400121.6165.703.160.547-129252.6530051.3824.892.690.482.481.92环号管段管长管径第一次校正qh1000ihij59-139227.4300-56.07-29.163.160.5214-1313909.635092.7550.633.640.55续表7-8511-1412646.835085.1739.333.110.4611-1016580.8400-100.19-36.642.210.3710-911686.6350-70.83-25.942.220.37-1.782.26环号管段管长管径第二次校正qh1000ihij12-36816.65250-43.7-35.175.160.803-610579.2350-66.28-20.741.960.317-615474.7400100.0534.042.20.342-75190.625038.3421.544.150.56-0.322.02环号管段管长管径第二次校正qh1000ihij23-47758.35300-58.16-26.223.380.454-1019914.1400-126.21-67.513.390.5311-1016580.8400102.7538.302.310.376-1113457.835084.0240.783.030.493-610579.235066.7521.051.990.326.402.16环号管段管长管径第二次校正qh1000ihij34-58563.7300-59.29-29.973.50.515-815893.1400-104.27-37.832.380.368-94934.4250-38.52-20.184.090.5210-911686.635071.2126.182.240.374-1019914.1400120.5761.933.110.510.132.27环号管段管长管径第二次校正qh1000ihij47-615474.7400-106.64-38.382.480.366-1113457.8350-94.54-50.743.770.5412-1120792.3400120.9665.083.130.547-129252.6530050.7324.332.630.480.301.91续表7-8环号管段管长管径第二次校正qh1000ihij59-139227.4300-55.68-28.793.120.5214-1313909.635093.1451.053.670.5511-1412646.835085.5639.713.140.4611-1016580.8400-99.8-36.312.190.3610-911686.6350-70.44-25.592.190.360.062.26环号管段管长管径第三次校正qh1000ihij12-36816.65250-43.7-35.175.160.803-610579.2350-66.28-20.741.960.317-615474.7400100.0534.042.20.342-75190.625038.3421.544.150.56-0.322.02环号管段管长管径第三次校正qh1000ihij23-47758.35300-59.64-27.463.540.464-1019914.1400-127.69-68.903.460.5411-1016580.8400101.2741.952.530.416-1113457.835082.5439.572.940.483-610579.235065.2720.211.910.315.352.20环号管段管长管径第三次校正qh1000ihij34-58563.7300-59.29-29.973.50.515-815893.1400-104.27-37.832.380.368-94934.4250-38.52-20.184.090.5210-911686.635071.2126.182.240.374-1019914.1400120.5761.933.110.510.132.27环号管段管长管径第三次校正qh1000ihij47-615474.7400-106.64-38.382.480.366-1113457.8350-94.54-50.743.770.54续表7-812-1120792.3400120.9665.083.130.547-129252.6530050.7324.332.630.480.301.91环号管段管长管径第三次校正qh1000ihij59-139227.4300-55.68-28.793.120.5214-1313909.635093.1451.053.670.5511-1412646.835085.5639.713.140.4611-1016580.8400-99.8-36.312.190.3610-911686.6350-70.44-25.592.190.360.062.26环号管段管长管径第四次校正qh1000ihij12-36816.65250-43.7-35.175.160.803-610579.2350-66.28-20.741.960.317-615474.7400100.0534.042.20.342-75190.625038.3421.544.150.56-0.322.02环号管段管长管径第四次校正qh1000ihij23-47758.35300-60.85-28.473.670.474-1019914.1400-128.9-70.103.520.5411-1016580.8400100.0636.482.20.366-1113457.835081.3338.492.860.473-610579.235064.0619.471.840.30-4.142.15环号管段管长管径第四次校正qh1000ihij34-58563.7300-59.29-29.973.50.515-815893.1400-104.27-37.832.380.368-94934.4250-38.52-20.184.090.5210-911686.635071.2126.182.240.374-1019914.1400120.5761.933.110.510.132.27续表7-8环号管段管长管径