皇冠即时比分

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三螺杆泵如何选型?

水泵选型 卧泉泵业 932浏览 0评论

螺杆泵皇冠即时比分的选型包括性能参数的选择和泵结构型式的选择,泵结构型式的选择在下一节讲。性能参数的选择:

1. LIULIANGQ:

ZUOWEIRONGJISHIBENG,YINGXIANGSHUANGLUOGANBENGLIULIANGDEYINSUZHUYAOYOUZHUANSUn,YALIp,YIJIJIEZHIDEZHANDUv。

1.1 ZHUANSUnDEYINGXIANG:

LUOGANBENGZAIGONGZUOSHI,LIANGLUOGANJICHENTAOZHIJIANXINGCHENGMIFENGQIANGSHI,JIYIGEMIFENGQIANGDETIJIDEYETIBEIPAICHUQU。LIXIANGZHUANGTAIXIA,BENGNEIBUWUXIELOU,NEIMEBENGDELIULIANGYUZHUANSUCHENGZHENGBI。

Qth=n×q

N ZHUANSU;

皇冠即时比分Q LILUNPAILIANG,JIBENGMEIXUANZHUANYIZHOUSUOPAICHUDEYETITIJI;

Qth LILUNPAILIANG

1.2 YALI△pDEYINGXIANG

BENGSHIJIGONGZUOGUOCHENGZHONG,QINEIBUCUNZAIXIELOU,YECHENGHUAYILIANG。YOUYUBENGDEMIFENGQIANGYOUYIDINGDEJIANXI,QIEMIFENGQIANGQIAN、HOUCUNZAIYACHA△p,YINCI,YOUYIBUFENLIUTIHUILIU,JICUNZAIXIELOU,XIELOULIANGYONG△QBIAOSHI,ZEQ= Qth-△Q

XIANERYIJIAN,SUIZHEMIFENGQIAN、HOUYACHA△pSHENGGAO,XIELOULIANG△QZHUJIANZENGDA。DUIYUBUTONGXINGXIANHEJIEGOU,YINGXIANGDAXIAOYEGEBUXIANGTONG。

1.3 ZHANDUⅤDEYINGXIANG

DUIYUSHUANGLUOGANBENG,ZHANDUDADELIUTIBIZHANDUXIAODELIUTIDEXIELOUYAOXIAO,XIELOULIANGYUJIEZHIZHANDUYOUYIDINGDEBILIGUANXI。

ZONGSHANGSUOSHU:YAOZONGHEDIKAOLVYISHANGGEZHONGYINSU,TONGGUOYIXILIEDEJISUANCAINENGJINGQUEDIZHIDAOBENGDESHIJILIULIANGSHIFOUFUHEGONGKUANGYAOQIU。

2. YALI△p:

离心泵不同,双螺杆泵的工作压力△p由出口负载决定,即出口阻力来决定。出口阻力与泵的出口处的压力是匹配,出口阻力越大,工作压力也越大。若想知道压力,则需要用流体力学的知识对出口阻力作精确地计算。

3. ZHOUGONGLVN:

ZHOUGONGLVFENWEILIANGBUFEN,JI:

皇冠即时比分Nth YEYAGONGLV,JIYALILIUTIDENENGLIANG;

Nr MOCAGONGLV。

DUIYUQUEDINGDEYALIHELIULIANG,QIYETIGONGLVSHIYIDINGDE,YINCIYINGXIANGZHOUGONGLVDEYINSUWEIMOCAGONGLVNr。

皇冠即时比分MOCAGONGLVSHIYOUYUYUNDONGBUJIAN、ZHOUCHENG、MIFENG、YIJICHILUNZHIJIANDEMOCAHEYETIHEGUOLIUBUFENDEMOCAERXIAOHAODENEIBUFENGONGLV。ZHEIXIEMOCALIXIANRANSHISUIZHEYACHADEZENGJIAERZENGJIADE,BINGQIEJIEZHIZHANDUDEZENGJIAYEHUIYINQIYETIMOCAGONGLVDEZENGJIA。

皇冠即时比分YOUCI,BENGDEZHOUGONGLVCHULEYEYAGONGLVWAI,QIZHONGMOCAGONGLVSUIJIEZHIZHANDUJIGONGZUOYALIERZENGJIADE,JIEZHIDEZHANDUYESHIYIGEFEICHANGZHONGYAOCANKAOSHUJU。YOUQIZAISHUSONGGAOZHANDUJIEZHISHI,XUYAOZUOBIJIAOJINGQUEDIJISUAN。

皇冠即时比分ZAIJISUANZHOUGONGLVHOU,XUANZEPEITAODIANJIYINGZUNZHAOYANGBENBIAOGEZHONGSUOGUIDINGDEYOUGUANGUIDING。

  N(KW)

  N≦10

皇冠即时比分  10<n≦50< p=””>

  N﹥50

  N﹥100

  K

  1.5

  1.25

  1.15

  1.1

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