1. Qhov cuam tshuam ntawm cov yeeb nkab ncaj nraim sab saud thiab sab hauv qab ntawm qhov ntsuas qhov tseeb ntawm lub tshuab ntsuas ultrasonic flowmeter. Tus lej calibration K yog ib qho kev ua haujlwm ntawm Reynolds tus lej. Thaum qhov ceev ntawm cov dej ntws tsis sib xws los ntawm laminar flow mus rau turbulent flow, tus lej calibration K yuav hloov pauv ntau heev, ua rau qhov ntsuas qhov tseeb txo qis. Raws li qhov yuav tsum tau siv, lub tshuab ntsuas ultrasonic flow transducer yuav tsum tau teeb tsa rau hauv qhov seem ntawm cov yeeb nkab ncaj nraim sab saud ntawm 10D, qhov seem ntawm cov yeeb nkab ncaj nraim sab saud ntawm 5D txoj haujlwm, rau qhov muaj cov twj tso kua mis, cov li qub thiab lwm yam khoom siv thaum qhov ntev ntawm qhov seem ncaj nraim, qhov yuav tsum tau ua ntawm "qhov deb ntawm turbulence, kev co, qhov chaw sov, qhov chaw suab nrov thiab qhov chaw ci ntsa iab kom deb li deb tau". Yog tias muaj cov twj tso kua mis, cov li qub thiab lwm yam khoom siv sab saud ntawm qhov chaw teeb tsa ntawm lub tshuab ntsuas ultrasonic flow transducer, qhov seem ntawm cov yeeb nkab ncaj nraim yuav tsum ntau dua 30D. Yog li ntawd, qhov ntev ntawm qhov seem ntawm cov yeeb nkab ncaj nraim yog qhov tseem ceeb los xyuas kom meej qhov tseeb ntawm kev ntsuas.
2. Qhov cuam tshuam ntawm cov khoom siv pipeline parameter rau qhov ntsuas qhov tseeb ntawm ultrasonic flowmeter. Qhov tseeb ntawm qhov teeb tsa pipeline parameter muaj feem cuam tshuam nrog qhov tseeb ntawm kev ntsuas. Yog tias qhov teeb tsa ntawm cov khoom siv thiab qhov loj ntawm pipeline tsis sib xws nrog qhov tseeb, nws yuav ua rau muaj qhov yuam kev ntawm thaj tsam theoretical pipeline flow cross-sectional thiab thaj tsam tiag tiag ntawm qhov ntws cross-sectional, ua rau cov txiaj ntsig kawg tsis raug. Tsis tas li ntawd, qhov sib nrug ntawm lub ultrasonic flow meter transducer yog qhov tshwm sim ntawm kev xam tag nrho ntawm ntau yam kev ntsuas xws li kua (suab ceev, dynamic viscosity), pipeline (khoom siv thiab qhov loj), thiab txoj kev teeb tsa ntawm lub transducer, thiab lwm yam, thiab qhov deb ntawm kev teeb tsa ntawm lub transducer deviates, uas kuj yuav ua rau muaj qhov yuam kev loj heev. Ntawm lawv, qhov teeb tsa thiab qhov deb ntawm kev teeb tsa ntawm sab hauv ntawm pipeline muaj feem cuam tshuam rau qhov tseeb ntawm kev ntsuas. Raws li cov ntaub ntawv cuam tshuam, yog tias qhov yuam kev sab hauv ntawm pipeline yog ± 1%, nws yuav ua rau muaj qhov yuam kev ntws txog ± 3%; Yog tias qhov yuam kev nruab nrab ntawm kev teeb tsa yog ± 1 hli, qhov yuam kev ntws yuav nyob hauv ± 1%. Nws tuaj yeem pom tias tsuas yog nrog qhov kev teeb tsa raug ntawm cov kav dej tsis tuaj yeem ua rau lub ultrasonic flowmeter raug ntsia thiab qhov cuam tshuam ntawm cov kav dej tsis raug ntawm kev ntsuas qhov tseeb tuaj yeem txo qis.
3, qhov cuam tshuam ntawm qhov chaw teeb tsa ultrasonic flow meter transducer rau qhov ntsuas qhov tseeb. Muaj ob txoj hauv kev los teeb tsa lub transducer: hom kev xav thiab hom ncaj qha. Yog tias kev siv lub suab nrawm nrawm ncaj qha luv luv, lub zog teeb liab tuaj yeem txhim kho.
4. Kev cuam tshuam ntawm tus neeg sawv cev txuas rau qhov tseeb ntawm kev ntsuas. Yuav kom ntseeg tau tias muaj kev sib cuag tag nrho nrog cov kav dej, thaum txhim kho lub transducer, ib txheej ntawm tus neeg sawv cev txuas yuav tsum tau coated sib npaug ntawm qhov chaw ntawm cov kav dej, thiab qhov tuab dav dav yog (2mm - 3mm). Cov npuas thiab cov granules hauv lub coupler raug tshem tawm kom qhov chaw emitter ntawm lub transducer txuas nruj nreem rau phab ntsa raj. Cov ntsuas dej ntws rau kev ntsuas dej ncig feem ntau ntsia hauv Qhov Dej, thiab ib puag ncig yog noo noo thiab qee zaum dej nyab. Yog tias siv tus neeg sawv cev txuas dav dav, nws yuav ua tsis tiav hauv lub sijhawm luv luv, cuam tshuam rau qhov tseeb ntawm kev ntsuas. Yog li ntawd, yuav tsum xaiv cov coupler tshwj xeeb uas tsis muaj dej, thiab yuav tsum siv lub coupler hauv lub sijhawm ua haujlwm, feem ntau 18 lub hlis. Yuav kom ntseeg tau tias qhov tseeb ntawm kev ntsuas, lub transducer yuav tsum tau rov nruab dua txhua 18 lub hlis thiab lub coupler yuav tsum tau hloov.
Lub sijhawm tshaj tawm: Cuaj hlis-04-2023