皇冠即时比分

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水泵扬程

水泵百科 卧泉泵业 669浏览 0评论

水泵的扬程又称为泵的压头,是指单位重量流体经泵所获得的能量。泵的扬程大小取决于泵的结构(如叶轮直径的大小,叶片的弯曲情况等、转速。目前对泵的压头尚不能从理论上作出精确的计算,一般用实验方法测定。

YI、GAIKUANG

扬程H(m)离心泵皇冠即时比分的扬程又称为泵的压头,是指单位重量流体经泵所获得的能量。

BENGDEYANGCHENGDAXIAOQUJUEYUBENGDEJIEGOU(RUYELUNZHIJINGDEDAXIAO,YEPIANDEWANQUQINGKUANGDENG、ZHUANSU。DUIBENGDEYATOUBUNENGCONGLILUNSHANGZUOCHUJINGQUEDEJISUAN,YIBANYONGSHIYANFANGFACEDING。

 

ER、SHIYANCEDING

BENGDEYANGCHENGKETONGSHIYANCEDING,JIZAIBENGJINKOUCHUZHUANGYIZHENKONGBIAO,CHUKOUCHUZHUANGYIYALIBIAO,RUOBUJILIANGBIAOJIEMIANSHANGDEDONGNENGCHA(JIΔu2/2g=0),BUJILIANGBIAOJIEMIANJIANDENENGLIANGSUNSHI(JI∑f1-2=0),ZEBENGDEYANGCHENGKEYONGXIASHIJISUAN

ZHUYIYIXIALIANGDIAN:

皇冠即时比分(1)SHIZHONGp2WEIBENGCHUKOUCHUYALIBIAODEDUSHU(Pa);p1WEIBENGJINKOUCHUZHENKONGBIAODEDUSHU(FUBIAOYAZHI,Pa)。

(2)ZHUYIQUFENLIXINBENGDEYANGCHENG(YATOU)HESHENGYANGGAODULIANGGEBUTONGDEGAINIAN。

皇冠即时比分YANGCHENGSHIZHIDANWEIZHONGLIANGLIUTIJINGBENGHOUHUODEDENENGLIANG。ZAIYIGUANLUXITONGZHONGLIANGJIEMIANJIAN(BAOKUOBENG)LIECHUBONULIFANGCHENGSHIBINGZHENGLIKEDESHIZHONGHWEIYANGCHENG,ERSHENGYANGGAODUJINZHIΔzYIXIANG。

LI2-1XIANCEDINGYITAILIXINBENGDEYANGCHENG。GONGZHIWEI20℃QINGSHUI,CEDELIULIANGWEI60m^3/hSHI,BENGJINKOUZHENKONGBIAODUSHUWEI0.02Mpa,CHUKOUYALIBIAODUSHUWEI0.47Mpa(BIAOYA),YIZHILIANGBIAOJIANCHUIZHIJULIWEI0.45mRUOBENGDEXIRUGUANYUYACHUGUANGUANJINGXIANGTONG,SHIJISUANGAIBENGDEYANGCHENG。

JIE:

CHA20℃SHUIMIDU1.0*10e3kg/m3,

h=0.45m (1MpaYUEDENGYU100MISHUIZHU)

皇冠即时比分pCHUKOU=0.47Mpa (0.47*100MISHUIZHU=47MISHUIZHU)

pJINKOU=-0.02Mpa (0.02*100MISHUIZHU=2MISHUIZHU)

ρWEIYETIDEMIDU

H=h+(pCHUKOU-pJINKOU)/ρg=0.45+(0.47*10e6-(-0.02*10e6))/(10e3*9.887)=45.96m(SHUIZHU)

转载请注明:卧泉泵业博客 » 水泵扬程

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