泵第一临界转速计算(能量法)

d1 厘米 17 10 10.5 12 12.5 12.5 14 14.5 15 16 12.5 12 14 10
(d0/d1)4 18 6.5536 5.391663 3.160494 2.684355 2.684355 1.705956 1.482545 1.294538 1 2.684355 3.160494 1.705956 6.5536
B=∑Pi*ai / l= A=∑Pi-B=
274.37 × 103公斤 204.6 × 103公斤
aki*A*10-3 (7+8)*10-3 Mi(9-6)*10-3 2*Mi*10-3 (Mi+Mi-1)*10-3 (2*Mi+Mi-1)*10-3 li 公斤*厘米 公斤*厘米 8 9 1.26849 1.28027 2.700656 2.773546 8.081509 8.769672 8.408861 9.194953 11.76422 14.46759 13.99431 19.34158 17.45197 45.31629 19.39562 50.90005 19.72297 51.4664 20.95055 53.27049 24.73556 58.88656 25.04245 59.41243 25.86083 60.54181 公斤*厘米 10 1.25671005 2.64022625 7.44839672 7.72028499 10.1683158 11.3545101 10.3629055 8.24289463 7.8482949 6.34364592 1.49896156 1.09249932 0 公斤*厘米公斤*厘米 公斤*厘米 厘米 11 12 13 14 2.51342 1.256710055 2.513420109 6.2 5.280452 3.8969363 6.537162545 7 14.89679 10.08862296 17.53701968 26.3 15.44057 15.16868171 22.8889667 1.6 20.33663 17.88860077 28.05691655 16.4 22.70902 21.52282591 32.87733605 10.9 20.72581 21.71741564 32.08032115 16.9 16.48579 18.60580013 26.84869476 9.5 15.69659 16.09118952 23.93948442 1.6 12.68729 14.19194081 20.53558673 6 2.997923 7.842607482 9.341569047 18.5 2.184999 2.591460884 3.683960204 1.5 0 1.09249932 1.09249932 4
∑Pφ i*aφ i*10-6 ∑Pφ i*10-3 aφ k*∑Pφ i*10-6 aφk*A*10-6 公斤*厘米3 24 0 0.105530293 0.849312057 12.77347611 14.08638399 33.64597182 46.26278052 67.13599094 77.41780186 78.64837185 89.99654197 115.1584232 115.5616467 117.3334594 公斤*厘米2 公斤*厘米3 公斤*厘米3 25 26 27 0 0 3.0289264 25.531523 0.247655769 9.4776085 99.069907 2.610492053 25.745875 518.35806 20.8898298 39.376043 550.93256 27.16097498 48.169701 944.6912 59.46831112 61.506748 1144.7988 87.97778788 75.088063 1416.8639 128.2970228 88.473963 1531.272 146.3896017 93.408182 1544.1449 153.4880067 97.12106 1658.4335 185.1641047 109.0902 1887.7088 229.6397731 118.86093 1891.0245 235.2434439 121.54789 1905.3441 240.8354912 123.50203 928.27104 × 103公斤 977.07304 × 103公斤
第一临界转速nk1的计算 Pi 公斤 1 2 3 4 5 6 7 8 9 10 11 12 13 1 3.8 6.3 23.35 2.43 38.89 42 293 40.2 2.5 5.8 16.4 1.8 2.5 ai 厘米 2 3.1 9.7 26.35 40.3 49.3 62.95 76.85 90.55 95.6 99.4 111.65 121.65 124.4 Pi*ai*10-3 ∑Pi 公斤*厘米 3 0.01178 0.06111 0.6152725 0.097929 1.917277 2.6439 22.51705 3.64011 0.239 0.57652 1.83106 0.21897 0.311 公斤 4 3.8 10.1 33.45 35.88 74.77 116.77 409.77 449.97 452.47 458.27 474.67 476.47 478.97 aki 厘米 5 6.2 13.2 39.5 41.1 57.5 68.4 85.3 94.8 96.4 102.4 120.9 122.4 126.4 aki*∑Pi*10-3 ∑Pi*ai*10-3 公斤*厘米 6 0.02356 0.13332 1.321275 1.474668 4.299275 7.987068 34.953381 42.657156 43.618108 46.926848 57.387603 58.319928 60.541808 公斤*厘米 7 0.01178 0.07289 0.6881625 0.7860915 2.7033685 5.3472685 27.864319 31.504429 31.743429 32.319949 34.151009 34.369979 34.680979
Pφi(12*15*18)*10-3 xs(13*16/12) aφi 公斤*厘米2 19 25.53152254 73.53838458 419.2881524 32.57449593 393.7586458 200.1075999 272.0650618 114.4081217 12.87295162 114.2886031 229.275241 3.315688395 14.31960708 厘米 20 4.13333333 3.91419774 15.2390675 0.80477982 8.57405296 5.55012253 8.32139263 4.56958938 0.79346061 2.89397863 7.34530481 0.71078831 1.33333333 厘米 21 4.133333 10.1142 28.43907 40.30478 49.67405 63.05012 76.72139 89.86959 95.59346 99.29398 109.7453 121.6108 123.7333
Pφ i*aφi(19*21)*10-6 aφk 公斤*厘米3 22 0.105530293 0.743781763 11.92416405 1.312907886 19.55958783 12.6168087 20.87321043 10.28181091 1.230569993 11.34817012 25.1618812 0.403223479 1.771812716 厘米 23 3.1 9.7 26.35 40.3 49.3 62.95 76.85 90.55 95.6 99.4 111.65 121.65 124.4 126.4
Bφ=∑Pφi*aφi / l= Aφ=∑Pφi-Bφ=
Βιβλιοθήκη Baidu
（24+27）*10-6 Mφ i*10-6 M2φ i*10-6 Pi*Mφ i*10-6 Pi*M2φ i*10-12 公斤*厘米3 28 3.028926413 9.583138748 26.59518657 52.14951948 62.2560847 95.15271947 121.3508434 155.6099544 170.8259842 175.7694317 199.0867465 234.0193581 237.1095324 240.8354912 E= I0=pai/64*d04 公斤*厘米3 公斤2*厘米6 29 30 3.028926 9.17439522 9.335483 87.1512425 23.98469 575.265571 31.25969 977.168199 35.09511 1231.66673 35.68441 1273.377 33.37306 1113.76083 27.31293 745.996233 24.43638 597.136786 22.28143 496.461901 13.92264 193.839955 4.379585 19.1807642 1.866088 3.48228623 0 0 2100000 公斤/厘米 3216.991 厘米4 nk1=299 4319.033828 公斤2*厘米3 31 11.50992037 58.81354277 560.042617 75.96104592 1364.848817 1498.745151 9778.305262 1097.979851 61.09095604 129.2322651 228.3313259 7.883252884 4.665221208 0 14877.40923 公斤3*厘米6 32 34.86270183 549.0528275 13432.45109 2374.518723 47899.51896 53481.83397 326331.9242 29989.04856 1492.841964 2879.479025 3178.975267 34.52537558 8.705715569 0 481687.7384
li/2 厘米 15 3.1 3.5 13.15 0.8 8.2 5.45 8.45 4.75 0.8 3 9.25 0.75 2
li/3 厘米 16 2.066667 2.333333 8.766667 0.533333 5.466667 3.633333 5.633333 3.166667 0.533333 2 6.166667 0.5 1.333333