关醒凡 - 轴流泵和斜流泵模型及工程应用3

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-5- 第三节 贯流泵模型及工程应用

一、JGM-3、JGM-4贯流泵装置模型

1、图8-9 JGM-3 、JGM-4模型装置流道图和三维图

2、图8-10 JGM-3综合特性曲线;表8-10 JGM-3试验数据

3、图8-11 JGM-4综合特性曲线;表8-11 JGM-4试验数据

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图8-19 JGM-3 、JGM-4模型装置流道图和三维图 -5- 图8-10 JGM-3综合特性曲线

JGM-3后灯泡贯流泵综合特性曲线流量(Q)(L/S)0°1-4°-2°432放角Φ叶片安563.0378.631397367.779.0578.532.852.82308.3342.020013401422效率(η)(%)(m)扬程(H)汽蚀比转速Cns比转速78H(m)-2°3000°+2°74%74%70%65%Q(L/S)72%433.0+4°+2°399.53.1077.91490143578.563.09400-4°D=300mm n=1450r/min+4°50070%JGM-372%65%76%1102109210861086110276%78%67.5m8m7m

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表8-10 JGM-3试验数据(Q(l/s),H(m),η(%))

-4 Q 347.3 347.3 337.0 329.1 320.9 314.0 308.3 299.9 292.9 283.8 274.2 268.2 255.9 247.5 239.9 232.9 252.2 216.3

H 1.08 1.13 1.63 1.98 2.28 2.59 2.85 3.03 3.26 3.47 3.83 3.99 4.29 4.58 4.75 4.98 5.20 5.39

η 53.64 56.83 67.28 72.84 73.17 77.94 78.53 77.98 77.61 77.08 75.41 75.14 73.21 71.52 69.83 68.85 67.57 65.70

ns 2944 2847 2131 1820 1617 1453 1340 1262 1181 1110 1013 972 899 842 806 767 729 696

-2 Q 376.4 368.8 363.2 355.0 351.1 342.0 332.4 322.1 313.7 307.3 301.5 294.8 279.0 267.2 259.7 254.5 244.6 234.8

H 1.52 1.86 2.05 2.34 2.52 2.82 3.06 3.33 3.58 3.81 3.92 4.15 4.54 4.85 5.06 5.22 5.48 5.69

η 65.36 71.69 74.03 75.86 77.37 79.05 78.20 76.91 76.35 75.92 75.60 75.20 73.61 70.95 69.51 68.79 66.68 64.23

ns 2372 2019 1861 1667 1508 1422 1319 1219 1140 1076 1043 989 899 837 799 773 731 696

0 Q 424.1 423.5 412.3 399.9 384.7 367.7 351.3 332.4 314.6 295.6 273.6 252.8

H 0.98 1.05 1.50 2.03 2.56 3.03 3.49 4.02 4.53 5.02 5.50 5.96

η 51.31 51.70 63.92 71.29 77.36 78.63 78.11 77.33 75.43 73.20 68.09 63.86

ns 3499 3322 2507 1968 1622 1397 1229 1075 956 858 771 698

+2 Q 446.0 440.1 429.3 424.8 420.5 412.1 405.4 399.5 384.8 366.8 357.9 349.8 336.7 325.6 313.0 300.0 287.3 270.5

H 1.51 1.76 2.19 2.36 2.49 2.72 2.94 3.09 3.45 3.85 4.11 4.38 4.73 5.01 5.34 5.62 5.88 6.18

η 61.85 65.32 72.04 74.78 75.71 76.38 77.70 78.57 76.93 75.71 74.70 74.20 73.19 72.34 69.68 66.54 64.85 60.96

ns 2595 2298 1926 1812 1732 1605 1501 1435 1297 1166 1097 1034 958 902 843 794 751 702

+4 Q 466.0 459.9 454.8 453.5 439.8 432.2 433.2 421.5 407.4 397.3 391.8 381.5 374.2 366.0 358.3 348.7 337.7 314.3

H 2.02 2.22 2.50 2.39 2.83 3.02 3.10 3.29 3.61 3.79 3.97 4.24 4.49 4.73 5.00 5.23 5.48 5.97

η 68.51 72.85 73.90 72.63 75.11 75.06 77.90 76.01 75.39 73.80 74.62 72.68 72.65 71.57 71.51 70.84 68.15 64.39

ns 2132 1974 1795 1853 1608 1518 1490 1406 1290 1227 1177 1106 1050 998 947 903 859 776

-7- 图8-11 JGM-4综合特性曲线

JGM-4后灯泡贯流泵模型装置综合特性曲线流量(Q)(L/S)0°1-4°-2°432放角Φ叶片安564.2379.461122391.1978.8378.783.723.96353.74373.9620011741152效率(η)(%)(m)扬程(H)汽蚀比转速Cns比转速78H(m)-2°3000°+2°80%78%438.50+4°+2°416.874.6880.251100109579.664.56400-4°D=300mm n=1450r/min+4°50070%JGM-474%11911032110010501100Q(L/S)79%76%72%78%74%76%7.5m8m8.5m -8-

表8-11 JGM-4试验数据(Q(l/s),H(m),η(%))

-4 Q 412.1 402.0 390.8 378.6 367.2 364.6 362.7 361.1 353.9 347.9 339.7 331.2 312.5 291.7 274.8 239.5 213.9 203.0

H 1.53 2.04 2.51 3.12 3.57 3.69 3.76 3.88 4.02 4.20 4.40 4.62 5.18 5.73 6.16 7.09 7.53 7.56

η 52.07 60.81 67.03 72.91 75.36 76.66 77.02 77.63 77.19 76.89 76.05 74.88 72.73 70.35 67.85 62.8 57.05 54.15

ns 2520 2007 1691 1415 1260 1225 1205 1174 1131 1086 1036 985 879 788 724 608 549 533

-2 Q 429.9 421.6 414.1 404.3 393.2 388.6 384.2 379.5 373.1 369.2 360.2 353.5 344.6 322.6 309.3 267.0 245.2 228.3

H 2.16 2.46 2.79 3.23 3.67 3.87 4.03 4.21 4.35 4.46 4.67 4.79 4.96 5.62 5.98 6.99 7.34 7.59

η 61.56 64.95 68.55 72.52 75.59 76.55 77.77 77.76 77.60 77.19 76.08 74.90 73.60 71.81 70.04 68.27 58.42 55.34

ns 1987 1784 1608 1426 1276 1219 1176 1131 1096 1070 1020 991 953 840 785 649 599 564

0 Q 445.0 440.3 422.5 411.8 405.1 403.8 402.5 399.3 395.7 392.8 374.9 362.1 350.2 337.3 325.7 291.9 269.3 246.4

H 2.65 2.82 3.56 3.95 4.22 4.29 4.31 4.41 4.43 4.49 4.82 5.19 5.54 5.84 6.13 6.97 7.3 7.5

η 66.12 67.69 74.41 76.51 77.83 78.15 78.38 78.52 77.36 76.58 74.54 73.08 72.48 70.50 68.86 63.79 58.77 54.49

ns 1735 1648 1354 1238 1167 1151 1145 1121 1111 1096 1017 945 885 835 791 680 631 590

+2 Q 465.2 458.5 441.8 435.8 429.3 425.5 423.1 419.2 414.1 408.8 391.0 382.7 370.7 352.8 326.0 306.6 290.2 273.5

H 3.35 3.57 4.12 4.39 4.58 4.75 4.78 4.84 4.93 4.98 5.24 5.48 5.74 6.18 6.70 7.06 7.23 7.44

η 71.58 73.99 76.82 77.57 78.24 78.80 78.60 78.16 77.09 75.38 72.35 71.08 68.87 66.97 61.90 58.79 56.10 53.59

ns 1488 1406 1241 1176 1129 1095 1087 1071 1050 1036 975 933 887 818 741 690 659 627

+4 Q 479.6 476.5 464.6 459.3 452.7 450.7 447.6 439.8 434.0 428.1 420.7 406.0 395.0 380.0 366.6 356.9 334.0 307.6