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实用水泵计算选型

2022-07-12 来源:客趣旅游网
附表4:

冷冻水泵计算表

冷冻水泵

CHWP-选型

1.2.3.4

计算书1.扬程计算

H=((H1+H2)+H3)*1.1(mH2O)其中:H:水泵扬程(mH2O)

H1:管路沿程阻力(mH2O)H2:管路局部阻力(mH2O)H3 :设备阻力(蒸发器+末端)序号管路规格一、H1=Σ管长*比摩阻(mH2O)最不利环路选择:制冷主机-水泵-分水器-地下供水管路-1-4mf管井-塔楼竖井-RF新风机组X/RF-03-管井-地下室-集水器-制冷主机(典型环路)H1H1=L*hfDN4501DN3502DN1503DN1504DN1505DN1506DN1257DN1008DN809DN5010DN2511DN2512DN2513DN320.450.360.150.150.150.150.1250.10.080.050.0250.0250.0250.03237.654.7425.81706422.51011231711.73.73.73.72.002.002.002.002.002.001.801.801.501.100.700.700.700.958296291291291291298394361339343.00343.00343.00428.003083.25255.047507.849470186246547.529804334830357634013.11269.11269.11583.60.310.530.754.951.860.650.300.430.830.580.400.130.130.16制冷机房制冷机房制冷机房地下一层1-4m管井4mf4mf4mf4mf4mf5f6f7f8f管径(m)长度(m)流速(m/s)2006年4月25日

比磨阻力沿程阻力沿程阻力备注(mH2O)(pa/m)(pa)1415161718192021222324252627282930313544合计H2DN32DN40DN40DN40DN50DN50DN50DN50DN50DN50DN50DN50DN50DN50DN50DN65DN80DN100DN150DN1500.0320.0420.0420.0420.050.050.050.050.050.050.050.050.050.050.050.0690.080.10.150.153.73.73.73.73.73.73.73.73.73.73.73.73.73.78.78.7941471.5626.140.950.950.950.951.101.101.101.101.101.101.101.101.101.101.101.401.501.802.002.00428.00358.00358.00358.00339.00339.00339.00339.00339.00339.00339.00339.00339.00339.00339.00394.00361.00394.00291.00291.001583.61324.61324.61324.61254.31254.31254.31254.31254.31254.31254.31254.31254.31254.32949.33427.832491576407420806.50.160.130.130.130.130.130.130.130.130.130.130.130.130.130.290.340.320.160.412.0817.429f10f11f12f13f14f15f16f17f18f19f20f21f22f23fRFRFRFRFRF-4M管井H2=ΣζρV2/2规格DN350DN250DN200DN150DN125DN100DN80DN65DN50DN40DN32DN25DN20DN450DN350DN150DN125DN100DN80DN65DN50DN40DN32DN25DN20DN150*125数量6222046610101010106422222222221622流速局部阻力单位阻力V(m/s)系数ζ(pa/个)2.000.265202.000.265202.000.265202.000.265201.800.264211.800.264211.500.262931.400.262551.100.261570.950.261170.950.261170.700.26640.700.266420.265202.000.2652021.6533001.81.6526731.81.6526731.51.6518561.41.6516171.11.659980.951.657450.951.657450.71.654040.71.654042.000.18360局部阻力局部阻力(mH2O)(pa)3120.000.311040.000.101040.000.1010400.001.041684.800.172527.200.251755.000.182548.000.251573.000.161173.250.121173.250.12637.000.06382.200.042080.000.211040.000.106600.000.665346.000.535346.000.533712.500.373234.000.321996.500.201489.130.1516380.381.646468.000.65808.500.08720.000.07序号部件12345678910111213141516171819202122232425弯头弯头弯头弯头弯头弯头弯头弯头弯头弯头弯头弯头弯头三通三通三通三通三通三通三通三通三通三通三通三通26大小头27大小头28293031323334353637383940414243444546474849合计H1:

大小头大小头大小头大小头大小头大小头大小头蝶阀蝶阀蝶阀蝶阀闸阀闸阀球阀过滤器过滤器止回阀软接头软接头软接头软接头软接头管路沿程阻力)

DN125*100DN100*80DN80*65DN65*50DN50*40DN40*32DN32*25DN25*20DN350DN250DN200DN150DN50DN20DN20DN250DN50DN200DN250DN200DN150DN40DN20222222222222211111224221.801.801.501.401.100.950.950.702.002.002.002.002.000.700.702.002.002.002.002.002.000.950.700.180.180.180.180.180.180.180.180.180.180.180.180.270.270.273.003.002.000.180.180.180.180.1829229220317610981814436036036036054066666000600040003603603608144583.20583.20405.00352.80217.80162.45162.4588.20720.00720.00720.00720.001080.0066.1566.156000.006000.004000.00720.00720.001440.00162.4588.200.060.060.040.040.020.020.020.010.070.070.070.070.110.010.010.600.600.400.070.070.140.020.0111.00H1=17.42

H2:

管路局部阻力)

H2=11.00

设备水阻力(蒸发器水H3:

阻力6m+风机盘管3m)

(mH2O)

(mH2O)

(mH2O

H3=8

H:系统阻力总合H=((H1+H2)+H3)*1.1

(mH2O

H=40.06

)2.轴功率:

N=流量(m3/h)*扬程

(mH2O)/367/效率

Q:

水泵流量(m3/h)

Q=273.96

(m3/h)

水泵扬程(m3/h)

H=40.06

(mH2O)

H:

η:效率

η=0.75

水泵轴功率N:

(KW)

N=39.873.水泵电机功率的选择在选取水泵电机功率时根据ISO5199加上安全余量按ISO5199的安全余量(节选)所需泵轴功率至…(KW)1008168494032.5选用电机所需泵轴选用电机所需泵轴选用电机所需泵轴选用电机输输出功率功率至…输出功率功率至…输出功率功率至…出功率(KW)(KW)(KW)(KW)(KW)(KW)(KW)11026304.35.50.550.759019223.240.40.557515.918.52.330.270.375512.8151.72.20.180.25459.1111.11.5376.17.50.811.1(KW)

根据上述4.水

泵的

对照ITT水泵样本选择水泵,型号:GISO-150X125-400

综上所述:

名称型号:水量:L/S扬程:mH2O功率:KW转速:CMH效率:进水口径mm:出水口径mm:叶轮直径mm:净重:Kg外形尺寸(长*宽*高)mm:浮动基础尺寸5.水泵减震器的选择:

f:震动源频率(设备震动频率f=n/60,n为转速,当设备有几个转速时取小值)

f=

静态压缩量δ=

145075%75.00%76.14076.140.0639.87设计提供参数计算参数所选设备参数GISO-150X125-40076.14245145080%DN150DN12537271515431900550750820140.0024.2Hz

32mm

(设计要求或按规范)

mmδ=32.0

K:减震器的弹簧常数,K=P/δ(KG/m),其中P为单个弹簧的荷载:P=3*水泵自重M/弹簧个数

K=111.72Kg/cmn:电机转速转/分钟n=1450CMH

震源的重量Kg(减M:

震器承受的荷载)水泵重量Q2+浮动基础重量Q3+M=

动载1.5R0(静载+干扰力)

===

对查样本减震器

选择广州华侨减震器厂的ZGT系列产品

选择广州华侨减震器厂的ZGT系列产品6个/台单个承重 :型号 :个数查表得:压缩量X=

=

额定荷载:系统固频率

√9800/f0=(2*3.14*

√X )=2.9Hz

频率比λ:

λ=f/f0=8.5

传震率T:

T=1/[(f/f0)2-=0.01

隔震率η

(1-T )η=

*100%

(按厂家提供计算公式)

285-570Kg,1.4Q210011499.75

++Kg

Q3499

KgKg

P=

ZGT-1-126个ZGT-1-12P/K

358Kg

的竖向刚度为:K=117Kg/cm31mm

最佳荷重

428Kg

(符合设计要求)

=99%

(符合设计要求)

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