热门关键词:
热门关键词:
(1)LIULIANGQ LIULIANGSHIYEXIABENGZAIDANWEISHIJIANNEISHUSONGDEYETILIANG(TIJIHUOZHILIANG)。
TIJILIULIANGYIQBIAOSHI,GUOJIDANWEISHI:m3/s,GONGCHENGZHONGCHANGYONGDEHAIYOUm3/h、L/sDENG。
ZHILIANGLIULIANGYIQmBIAOSHI,GUOJIDANWEI:kg/s,GONGCHENGZHONGCHANGYONGDEHAIYOUL/hDENG。
ZHILIANGLIULIANGHETIJILIULIANGDEGUANXIWEI
Qm=ρQ (7-1)
SHIZHONGρ—YETIDEMIDU(kg/m3);
精选十码期期准 Q—TIJILIULIANG(m3/h)o
精选十码期期准 (2)YANGCHENGH YANGCHENGSHIZHIYEXIAYEXIABENGSUOCHOUSONGDEDANWEIZHONGLIANGYETITONGGUOYEXIAYEXIABENGHOUHUODEDENENGLIANG,YIHBIAOSHI,DANWEISHIm。
YANGCHENGSHIYIGENENGLIANGZENGLIANGDEGAINIAN,WEIDANWEIYETICONGYEXIAYEXIABENGJINKOUFALANCHU(YEXIABENGJINKOU)DAOCHUKOUFALANCHU(YEXIABENGCHUKOU)SUOHUODEDENENGLIANGZENGLIANG。
精选十码期期准 YEXIABENGDEYANGCHENGKEYIBIAODAWEI
精选十码期期准 H=E2-E1 (7-2)
精选十码期期准 SHIZHONG E2—YEXIABENGCHUKOUCHUDANWEIZHONGLIANGYETIDENENGLIANG(m);
精选十码期期准 E1—YEXIABENGJINKOUCHUDANWEIZHONGLIANGYETIDENENGLIANG(m)。
DANWEIZHONGLIANGYETIDENENGLIANGZAISHUILIXUEZHONGCHENGWEISHUITOU,YOUWEIZHISHUITOUZ、YALISHUITOUP/ρgHESUDUSHUITOUv2/2gSANBUFENZUCHENG,JI:
E2=p2/ρg+v22/2g+z2
精选十码期期准 E1=p1/ρg+v21/2g+z21
精选十码期期准 SHIZHONGP2、P1—YEXIABENGCHUKOU、JINKOUCHUYETIDEJINGYALI(Pa);
精选十码期期准 V2、V1—YEXIABENGCHUKOU、JINKOUCHUYETIDESUDU(m/s);
z2、z1—YEXIABENGCHUKOU、JINKOUCHUZHIYEXIABENGCELIANGJIZHUNMIANDEJULI(m);
ρ—YETIMIDU(kg/m3);
精选十码期期准 g—ZHONGLIJIASUDU(m/s2)。
YINCI,YEXIABENGYANGCHENGWEI
精选十码期期准 H=E2-E1=(P2-P1)/ρg+(v22-v12)/2g
YEXIABENGYANGCHENGBIAOZHENGYEXIABENGBENSHENDEXINGNENG,ZHIYUYEXIABENGJINKOU、CHUKOUCHUDEYETINENGLIANGYOUGUAN,ERYUYEXIABENGZHUANGZHIWUZHIJIEGUANXI。DANKELIYONGZHUANGZHIZHONGYETIDENENGLIANGJISUANYEXIABENGDEYANGCHENG。
精选十码期期准 (3)ZHUANSUnZHUANSUSHIYEXIABENGZHOUDANWEISHIJIANNEIDEZHUANSHU,DANWEIWEIr/min。
(4)GONGLV
精选十码期期准 1)SHURUGONGLVPa:YEXIABENGGONGLVTONGCHANGZHISHURUGONGLV,JIYUANDONGJICHUANDAOYEXIABENGZHOUSHANGDEGONGLV,GUCHENGZHOUGONGLV。SHURUGONGLVYIPaBIAOSHI,GUOJIDANWEIWEIW,GONGCHENGSHANGCHANGYONGkW。
2)YOUXIAOGONGLVPM:ZHIDANWEISHIJIANNEICONGYEXIABENGZHONGSHUSONGCHUQUDEYETIZAIYEXIABENGZHONGHUODEDEYOUXIAONENGLIANG,YOUCHENGSHUCHUGONGLV。YOUXIAOGONGLVGUOJIDANWEISHIW,GONGCHENGSHANGCHANGYONGkW,CHANGCHENGSHUI(YE)GONGLV。
PM=ρgQH
SHIZHONG Q—YEXIABENGSHUSONGYETILIULIANG(m3/h);
H—YEXIABENGYANGCHENG(m);
精选十码期期准 ρ—YETIMIDU(kg/m3);
g—ZHONGLIJIASUDU(m/s2)。
(5)YEXIABENGXIAOLVη YEXIABENGXIAOLVDINGYIWEIYEXIABENGYOUXIAOGONGLVYUZHOUGONGLVZHIBI。YEXIABENGDEZHOUGONGLVYUYOUXIAOGONG
精选十码期期准 LVZHICHAWEIYEXIABENGNEIDESUNSHIGONGLV,QIDAXIAOYONGYEXIABENGDEXIAOLVLAIJILIANG。YEXIABENGXIAOLVYIηBIAOSHI
η=Pu100%/Pa=ρgQH100%/Pa
精选十码期期准 (6)BIXUQISHIYULIANGNPSHr NPSH(Net Positive Suction Head)SHIJINGZHENGXIRUSHUITOUDEYINGWENSUOXIE。
NPSHrCHENGBIXUQISHIYULIANG。NPSHrWULIYIYISHIZHIYEXIABENGJINKOUDAOYEPIANBEIMIANJIAODIYALICHUNENGLIANGSUNSHI,DANWEISHIm。
NPSHrSHIYEXIABENGGUYOUDETEXING,ZHIQUJUEYUYEXIABENGBENSHEN,YUWAIBUDEZHUANGZHIWUGUAN。
NPSHrSHITONGGUOSHIYAN,ANZHAOYIDINGDEXINGNENGBIANHUAYUEDINGHUODE。ZHEIZHONGYUEDINGKEYISHIHETONGGUIDING,YEKEYIZHIJIEZHIXINGYEXIABENGSHIYANFANGFABIAOZHUNDEGUIDING。YIBANCAIYONGNPSH3ZUOWEINPSHrZHI,GB/T3216《HUIZHUANDONGLIYEXIABENGSHUILIXINGNENGYANSHOUSHIYANlJIHE2JI》ZHONGNtXSH3DINGYIWEI:JINXINGZHEIZHONGSHIYANSHI,CAIYONGZHUJIANJIANGDINPSHZHIZHIHENGDINGLIULIANGXIA(YIJI)YANGCHENGDEXIAJIANGDADAO3%,CISHIDENPSHZHIJIWEINPSH3.