精选十码期期准

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液下泵的基本参数

文章出处:江苏华强泵业有限公司人气:发表时间:2017-11-25 10:01:23

 (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.