Venturi vs Orifice
Orifice meters thiab Venturi meters yog cov cuab yeej siv los ntsuas qhov siab ntawm cov dej ntws. Ob leeg yog cov sib txawv siab flowmeter thiab ua hauj lwm los ntawm kev tso ib tug constriction nyob rau hauv cov dej ntws. Raws li cov kua dej hla qhov kev txwv no, nws qhov nrawm nce ntxiv raws li Bernoulli Equation, uas hais tias kev nce siab tsis tuaj yeem hloov pauv hauv cov yeeb nkab, yog tias lub siab txo qis, qhov nrawm ntawm cov dej ntws hauv cov yeeb nkab nce. Txoj cai no yog siv ob qho tib si hauv Venturi nrog rau orifice meters. Cia peb pom qhov sib txawv ntawm ob hom meters kom tus nyeem ntawv nkag siab txog lawv qhov tshwj xeeb zoo thiab qhov tsis zoo thiab ua kom muaj kev xaiv uas haum rau nws cov kev xav tau.
A Venturi meter constricts cov dej ntws thiab lub siab sib txawv yog ntsuas siv lub siab sensors ua ntej thiab nyob rau hauv lub constriction. Qhov no yog ib txoj kev qub heev los ntsuas cov nqi ntws. Orifice phaj zoo ib yam li hauv kev txiav txim siab tias nws siv lub phaj nrog ib lub qhov me me nyob nruab nrab ntawm qhov chaw txwv tsis pub dhau ntawm cov kua dej. Lub siab sib txawv ua ntej thiab tom qab lub qhov ncauj qhia txog tus nqi ntawm cov kua. Qhov no yog qhov tseeb tshwj xeeb ntawm Venturi meter thiab ua rau lub zog poob ntau dua li Venturi meter. Cov paib orifice no pheej yig thiab yooj yim rau nruab hauv yuav luag txhua daim ntawv thov.
Venturi vs Orifice
• Venturi meter yog kim thiab siv sijhawm los nruab. Nws yuav tsum tau ua tib zoo proportioned thiab fabricated. Ntawm qhov tod tes, orifice daim hlau yog ib qho yooj yim los ua, thiab pheej yig heev nyob rau hauv kev sib piv. Lawv kuj tau yooj yim ntsia tau rau hauv txhua daim ntawv thov.
• Lub taub hau poob hauv orifice meters ntau zaus ntau dua nrog Venturi meters. Qhov no txhais ua ntau lub zog poob, uas txhais tau hais tias tag nrho cov kev txuag uas tau txais nrog cov phaj pheej yig thaum pib yuav raug them nrog poob ntawm lub hwj chim. Yog li nws yog qhov yuav tsum tau ua kom siv cov paib orifice thaum lub sijhawm sim thiab tau txais Venturi meters npaj los siv rau lub sijhawm thov.
• Feem ntau, daim phiaj orifice yog hloov tau yooj yim dua li kev txhim kho lub phaj orifice tshiab rau qhov qhib dav dua los yog nqaim dua yog yooj yim dua thiab pheej yig dua li kev npaj cov phaj Venturi.
• Nyob rau tib lub sijhawm, qhov piv ntawm kev nyeem ntawv ntawm Venturi meter rau ntawm daim phiaj orifice yog 1: 2.58
• Orifice daim hlau tuaj yeem ua los ntawm cov khoom sib txawv uas cov txheej txheem ntawm cov kav dej tab sis cov khoom ntawm Venturi raj yuav tsum zoo ib yam li cov kav dej
• Orifice daim hlau yog muab tso rau ntawm flanges xav tau gaskets uas yuav xau tab sis Venturi hlab yog welded nyob rau hauv lub system thiab tsis muaj lus nug txog ib tug to
