转轮选型模板050114.xls

转轮选型模板050114.xls

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xxx电站水轮机转轮直径、转速及工作范围计算Hmax（m）=91.0Nf（kW）=5000说明取算单位流量Q1在模型曲线上初选，最优单位转速n1与出力限制线的交点稍左处。

Hi（m）=f（%）=0.94取算水轮机效率s取算选用的Q1值与模型最优单位转速值n1交点处的模型效率。

He（m）=115.0Ns（kW）=5319取算单位转速n1取最优单位转速n1。

Hmin（m）=89.0电站高程255实际水轮机效率s根据计算的n2值与模型出力限制线交点稍左处的模型效率-。

转轮型号在模型曲线上初步取值效率修正额定水头（He）下计算值Hmax时计算值Hmin时计算值Hi时计算值取算单位流量m3/s取算水轮机效率最优单位转速r/min模型最高效率模型转轮直径m工艺和部件修正转轮效率修正转轮直径m取算转轮直径m计算转速r/min同步转速r/min单位转速r/min实际水轮机效率水轮机流量m3/s单位流量m3/s空蚀系数吸出高度m单位转速r/min水轮机流量m3/s单位流量m3/s单位转速r/min单位流量m3/s单位转速r/minQ1sn10MmaxD1M1-2D1D1njsnen1sQeQ1Hsn1QeQ1n1Q1n190/D540.250.90062.00.9170.400.020-0.0021.401.4047550065.30.8985.250.250.0285.4773.46.790.3674.20.29#DIV/0!

A1790.230.88562.00.9130.400.0200.0001.471.4745242958.80.8855.330.230.0305.1966.16.890.3366.80.27#DIV/0!

A5420.270.88062.00.9250.500.020-0.0061.361.3648950063.40.8745.390.270.0305.2471.36.980.4072.10.32#DIV/0!

160/D460.620.90067.50.9160.400.020-0.0080.890.8981375062.20.8925.290.620.0433.8370.06.830.9070.80.73#DIV/0!

A2530.750.90063.00.9210.460.020-0.0120.810.8183475056.60.8885.310.750.0552.3563.76.861.1064.40.88#DIV/0!

180/A1940.720.91070.00.9260.350.020-0.0080.820.82915100076.50.9025.230.730.0700.4586.06.761.0586.90.85#DIV/0!

180/D06A0.800.88569.00.9150.400.020-0.0090.790.79937100073.70.8765.380.800.0562.2482.86.961.1783.70.94#DIV/0!

A6780.780.90071.50.9360.370.020-0.0110.790.79971100073.70.8895.300.790.0651.1082.86.861.1583.70.93#DIV/0!

220/A1531.050.90071.00.9150.460.020-0.0140.680.681120100063.40.8865.321.070.080-0.7471.36.881.5672.11.26#DIV/0!

240/D411.080.89077.00.9200.350.020-0.0100.680.681214100063.40.8805.361.080.105-3.9171.36.931.5772.11.27#DIV/0!

260/D741.220.90579.00.9270.350.020-0.0120.630.631345150088.10.8935.281.240.140-8.3199.16.831.80100.21.45#DIV/0!

出力限制线Hmin时He时Hmax时n1Q1Hmax时HiHe时Hi时工作范围转轮260/A2441.250.87080.00.9170.350.020-0.0110.640.641340150089.50.8595.491.250.150-9.58100.67.101.82101.81.46#DIV/0!

A5511.300.90080.20.9350.350.020-0.0130.610.611410150085.30.8875.321.330.110-4.5095.96.871.9497.01.56#DIV/0!

A6900.880.92072.50.9370.360.020-0.0120.740.741051100069.00.9085.190.880.0700.4977.66.711.2878.41.03#DIV/0!

A575c0.550.91566.10.9350.500.020-0.0120.930.9376275065.00.9035.220.560.0601.6673.16.750.8273.90.66#DIV/0!

注释：

计算：

水轮机最高效率Tmax=1-（1-Mmax）*（D1M/D1）0.2-1-2=Tmax-MmaxD1计算：

D1=（Ns/（9.81*Q1*s*H1.5）0.5转速计算：

n=n10*H0.5/D1单位转速n1=n*D1/H0.5单位流量Q1=Q/（D12*H0.5）Q=Nf/（9.81*f*s*H）Hs=10.0-kH-?

/900-D1/2k=1.051.30比转速：

ns=7n（Ns）0.5/6H1.25注：

表中红色字体的单元格是可修改的。

输入电站参数后，看某个转轮在本站设计工况下的单位转速与模型最优单位转速相近，单位流量适当即可。

真诚欢迎各位同行提出中肯的意见。

QQ48257550其它相关参数比转速m.kW单位飞逸转速r/min单位转速r/min使用水头m单位流量m3/s转轮最优工况下的值m.kW本站条件下的计算值m.kWQ1nsnsn1RnRHsy#DIV/0!

84.0113.098.6671.8230-400#DIV/0!

89.796.998.8641.2400#DIV/0!

97.6113.098.3689.5400#DIV/0!

150.0169.5122.31310.9#DIV/0!

166.5169.5115.31357.9140#DIV/0!

170.0225.9127.81486.7110-180#DIV/0!

172.0225.9128.61552.9110-150#DIV/0!

189.9225.9130.91580.6180#DIV/0!

218.0225.9136.61916.390-150#DIV/0!

225.0225.9146.72058.070-105#DIV/0!

247.0338.9150.42277.350-80取算单位流量Q1在模型曲线上初选，最优单位转速n1与出力限制线的交点稍左处。

取算水轮机效率s取算选用的Q1值与模型最优单位转速值n1交点处的模型效率。

实际水轮机效率s根据计算的n2值与模型出力限制线交点稍左处的模型效率-。

Hi时计算值#DIV/0!

263.0338.9158.72365.535-75#DIV/0!

275.5338.9148.92328.560#DIV/0!

-225.9121.11561.1-#DIV/0!

-169.5121.01241.1200HLA690水轮机运转特性曲线计算pass.D1（m）=0.88ne（r/min）=750Hmax（m）=90.3He（m）=Hmax=90.3Hi1=85.2Hi2=80.0n1=69.5n1=71.5n1=73.8m（%）Q1（m3/s）Ns（kW）m（%）Q1（m3/s）Ns（kW）m（%）Q1（m3/s）Ns（kW）m（%）80.01.200610280.00.840391480.00.840356280.081.01.500772581.00.840396581.00.840360781.082.0082.00.840401582.00.840365382.083.0083.00.840406583.00.840369983.084.0084.00.840411584.00.840374484.085.00.995538485.00.840416585.00.840379085.086.01.035566786.00.840421686.00.840383686.087.01.075595787.00.840426687.00.840388187.088.01.110622388.00.840431688.00.840392788.089.01.150652289.00.840436689.00.840397389.090.0090.00.840441690.00.840401890.090.5090.50.840444190.50.840404190.591.0091.00.840446691.00.840406491.091.5091.50.840449291.50.840408791.592.0092.00.840451792.00.840411092.091.5091.50.840449291.50.840408791.591.0091.00.840446691.00.840406491.090.0090.00.840441690.00.840401890.089.01.160657989.00.840436689.00.840397389.088.01.212679588.00.840431688.00.840392788.087.01.247691087.00.840426687.00.840388187.086.01.277699386.00.840421686.00.840383686.085.01.308707785.00.840416585.00.840379085.0在5出力限制线上87.31.239688988.21.238637688.71.238583587.3拐弯处的点的换算点拐弯处的点计算值n1Q1m（%）s（%）HNs注释水轮机出力计算：

Ns=9.81*s*Q1*D21*H1.5155.00.90092.190.13.54034拐弯处点的H计算：

H=（D1*n/n1）0.5266.00.70092.190.13.22743377.01.20092.190.12.94056453.00.90092.190.13.5403480.0Hmin（m）=64.6=-0.02Hi3=74.9Hi4=69.7Hmin=64.6n1=76.3n1=79.1n1=82.1Q1（m3/s）Ns（kW）m（%）Q1（m3/s）Ns（kW）m（%）Q1（m3/s）Ns（kW）0.840322680.00.840289680.00.84025840.840326881.00.840293481.00.84026180.840330982.00.840297182.00.84026510.840335183.00.840300883.00.84026840.840339284.00.840304584.00.84027170.840343385.00.840308285.00.84027500.840347586.00.840311986.00.84027830.840351687.00.840315687.00.84028160.840355788.00.840319388.00.84028490.840359989.00.840323189.00.84028830.840364090.00.840326890.00.84029160.840366190.50.840328690.50.84029320.840368291.00.840330