水泵計算選型表p

附表6：,,,,,,,,

采暖水泵計算表2,,,,,,,,

采暖水泵選型計算書,,HWP-4.5,,,,,2006年4月25日,

1.揚程計算,,,,,,,,

H=（（H1+H2）+H3）*1.1（mH2O）,,,,,,,,

其中:,,,,,,,,

H：水泵揚程（mH2O）,,,,,,,,

H1：管路沿程阻力（mH2O）,,,,,,,,

H2：管路局部阻力（mH2O）,,,,,,,,

H3：設備阻力（蒸發(fā)器+末端）（mH2O）,,,,,,,,

序號,管路規(guī)格,管徑(m),長度(m),流速(m/s),比磨阻力（pa/m),沿程阻力(pa),沿程阻力(mH2O),備注

一、H1=Σ管長*比摩阻（mH2O）,,,,,,,,

最不利環(huán)路選擇：板式換熱器-水泵-1層供水管路-末端散熱器-回水管路-板式換熱器,,,,,,,,

H1,H1=L*hf,,,,,,,

1,DN400,0.4,20,2.00,84,1680,0.17,制冷機房

2,DN125,0.125,10,1.80,298,2980,0.30,制冷機房

3,DN100,0.1,120,1.80,394,47280,4.73,

4,DN80,0.08,80,1.50,361,28880,2.89,

8,DN32,0.032,50,0.95,428,21400,2.14,

9,DN25,0.025,60,0.70,343,20580,2.06,

10,DN20,30,30,0.70,471,14130,1.41,

合計,,,370,,,,13.69,

H2,H2=ΣζρＶ２／２,,,,,,,

序號,部件,規(guī)格,數(shù)量,流速V(m/s),局部阻力系數(shù)ζ,單位阻力（pa/個),局部阻力(pa),局部阻力(mH2O)

5,彎頭,DN125,4,1.80,0.26,421,1684.80,0.17

6,彎頭,DN100,16,1.80,0.26,421,6739.20,0.67

7,彎頭,DN80,6,1.50,0.26,293,1755.00,0.18

11,彎頭,DN32,10,0.95,0.26,117,1173.25,0.12

12,彎頭,DN25,10,0.70,0.26,64,637.00,0.06

13,彎頭,DN20,6,0.70,0.26,64,382.20,0.04

14,三通,DN150,4,2,0.26,520,2080.00,0.21

18,三通,DN100,2,1.8,1.65,2673,5346.00,0.53

19,三通,DN80,2,1.5,1.65,1856,3712.50,0.37

,三通,DN50,2,1.1,1.65,998,1996.50,0.20

22,三通,DN32,2,0.95,1.65,745,1489.13,0.15

24,三通,DN25,16,0.7,1.65,404,6468.00,0.65

25,三通,DN20,2,0.7,1.65,404,808.50,0.08

27,大小頭,DN125*100,2,1.80,0.18,292,583.20,0.06

28,大小頭,DN100*80,2,1.80,0.18,292,583.20,0.06

29,大小頭,DN80*50,2,1.50,0.18,203,405.00,0.04

31,大小頭,DN50*32,2,1.10,0.18,109,217.80,0.02

33,大小頭,DN32*25,2,0.95,0.18,81,162.45,0.02

34,大小頭,DN25*20,2,0.70,0.18,44,88.20,0.01

36,蝶閥,DN250,2,2.00,0.18,360,720.00,0.07

37,蝶閥,DN200,2,2.00,0.18,360,720.00,0.07

38,蝶閥,DN125,2,2.00,0.18,360,720.00,0.07

40,閘閥,DN20,1,0.70,0.27,66,66.15,0.01

41,球閥,DN20,1,0.70,0.27,66,66.15,0.01

42,過濾器,DN125,1,2.00,3.00,6000,6000.00,0.60

44,止回閥,DN125,1,2.00,2.00,4000,4000.00,0.40

45,軟接頭,DN250,2,2.00,0.18,360,720.00,0.07

46,軟接頭,DN200,2,2.00,0.18,360,720.00,0.07

47,軟接頭,DN125,2,2.00,0.18,360,720.00,0.07

48,軟接頭,DN40,2,0.95,0.18,81,162.45,0.02

合計,,,,,,,,5.09

H1：,管路沿程阻力）,,,,,,,

,H1=,13.69,（mH2O）,,,,,

H2：,管路局部阻力）,,,,,,,

,H2=,5.09,（mH2O）,,,,,

H3：,設備水阻力（板式換熱器水阻力3m+散熱器盤管2m）,,,,,,,

,H3=,5,（mH2O）,,,,,

H：,系統(tǒng)阻力總合H=（（H1+H2）+H3）*1.1,,,,,,,

,H=,26.16,（mH2O）,,,,,

2.軸功率:,,N=流量（m3/h)*揚程（mH2O）/367/效率,,,,,,

Q：,水泵流量（m3/h),,,,,,,

"系統(tǒng)總水量為120l/s,其中裙樓1-4層424臺散熱器水量40l/s,塔樓及地下室約600臺散熱器水量80l/s",,,,,,,,

,Q=,144,（m3/h),,,,,

H：,水泵揚程（m3/h),,,,,,,

,H=,26.16,（mH2O）,,,,,

η：,效率,,,,,,,

,η=,0.75,,,,,,

N：,水泵軸功率（KW),,,,,,,

,N=,13.69,（KW),,,,,

3.水泵電機功率的選擇,,,,,,,,

在選取水泵電機功率時根據(jù)ISO5199加上安全余量,,,,,,,,

按ISO5199的安全余量(節(jié)選）,,,,,,,,

所需泵軸功率至…（KW),,選用電機輸出功率（KW),所需泵軸功率至…（KW),選用電機輸出功率（KW),所需泵軸功率至…（KW),選用電機輸出功率（KW),所需泵軸功率至…（KW),選用電機輸出功率（KW)

100,,110,26,30,4.3,5.5,0.55,0.75

81,,90,19,22,3.2,4,0.4,0.55

68,,75,15.9,18.5,2.3,3,0.27,0.37

49,,55,12.8,15,1.7,2.2,0.18,0.25

40,,45,9.1,11,1.1,1.5,,

32.5,,37,6.1,7.5,0.81,1.1,,

根據(jù)上述計算及上表數(shù)據(jù)，所選水泵電機功率應為18.5KW,,,,,,,,

4.水泵的選型:,,,,,,,,

對照ITT水泵樣本選擇水泵，型號：GISO-125X100-315,,,,,,,,

綜上所述：,,,,,,,,

名稱,,設計提供參數(shù),,計算參數(shù),,所選設備參數(shù),,

型號：,,,,,,GISO-125X100-315,,

水量：L/S,,,,40,,40,,

揚程：mH2O,,,,26.16,,33,,

功率：KW,,,,13.69,,18.5,,

轉速：CMH,,,,,,1450,,

效率：,,,,75%,,80%,,

進水口徑mm：,,,,,,DN125,,

出水口徑mm：,,,,,,DN100,,

葉輪直徑mm：,,,,,,325,,

凈重：Kg,,,,,,419,,

外形尺寸（長*寬*高）mm：,,,,,,1366,440,750

浮動基礎尺寸,,,,,,1700,650,140.00

5.水泵減震器的選擇：,,,,,,,,

,f：震動源頻率(設備震動頻率f=n/60，n為轉速，當設備有幾個轉速時取小值）,,,,,,,

,f=,24.2,Hz,,,,,

,靜態(tài)壓縮量δ=,,32mm,（設計要求或按規(guī)范）,,,,

,δ=,32.0,mm,,,,,

,K：減震器的彈簧常數(shù)，K=P/δ（KG/m），其中P為單個彈簧的荷載：P=3*水泵自重M/彈簧個數(shù),,,,,,,

,K=,65.47,Kg/cm,,,,,

,n：,電機轉速,轉/分鐘,,,,,

,n=,1450,CMH,,,,,

,M：,震源的重量Kg（減震器承受的荷載）,,,,,,

,M=,水泵重量Q2+浮動基礎重量Q3+動載1.5R0（靜載+干擾力）,,,,,,

,=,1.4Q2,+,Q3,Kg,,,

,=,586.6,+,387,Kg,,,

,=,973.35,Kg,,,,,

,對查樣本減震器,,,,,,,

,選擇廣州華僑減震器廠的ZGT系列產品,,,,,,,

,選擇廣州華僑減震器廠的ZGT系列產品6個/臺,,,,,,,

,單個承重：,P=,210,Kg,,,,

,型號：,ZGT-1-7,,,,,,

,個數(shù),6個,,,,,,

,查表得：,ZGT-1-7,的豎向剛度為:,,,,,

,,K=,64,Kg/cm,,,,

,壓縮量X=,P/K,,,,,,

,=,33,mm,,(符合設計要求）,,,

,額定荷載：,125-310Kg，,,最佳荷重233Kg,,,,

,系統(tǒng)固頻率,,,,,,,

,f0=,√9800