Cov ntsiab lus twg yuav tsum tau saib xyuas thaum txhim kho lub clamp-on ultrasonic flowmeter?

Thaum txhim kho lub clamp-on ultrasonic flowmeter, yuav tsum tau them sai sai rau ntau yam xws li cov xwm txheej ntawm cov kav dej, qhov chaw teeb tsa sensor, thiab cov yam ntxwv ib puag ncig kom ntseeg tau tias qhov ntsuas raug thiab cov khoom siv ruaj khov. Nov yog cov kev ceev faj tshwj xeeb:

I. Kev Tshuaj Xyuas Cov Xwm Txheej Tseem Ceeb ntawm Cov Kav Dej

1. Cov Khoom Siv Yeeb Nkab thiab Phab Ntsa Thickness
   • Cov cuab yeej ntsuas clamp-on vam khom cov nthwv dej ultrasonic uas nkag mus rau hauv cov kav dej kom nthuav dav. Yog li ntawd, cov kav dej yuav tsum ua los ntawm cov khoom siv tsis yog hlau (xws li PVC, PE) lossis cov khoom siv hlau nyias nyias (xws li hlau tsis xeb, hlau carbon, nrog rau phab ntsa tuab feem ntau pom zoo kom yog ≤ 10mm).
   • Yog tias phab ntsa sab hauv ntawm cov kav dej muaj txheej tiv thaiv xeb, scaling, lossis lining (xws li cement, roj hmab lining), nws yog qhov tsim nyog los xyuas kom meej tias nws cov tuab yog sib xws thiab tsis cuam tshuam rau kev xa suab nthwv dej; txwv tsis pub, qhov yuam kev ntsuas yuav tshwm sim.
2. Txoj kab uas hla ntawm cov kav dej thiab qhov nrawm ntawm cov dej ntws
   • Xyuas kom tseeb tias qhov ntsuas ntawm lub ntsuas dej sib xws nrog lub raj xa dej txoj kab uas hla thiab qhov nrawm ntawm qhov ntws (feem ntau, cov hom clamp-on yog qhov tsim nyog rau cov raj xa dej nrog DN15 ~ DN6000, thiab qhov nrawm ntawm qhov ntws feem ntau pom zoo kom yog 0.3 ~ 12m / s).
   • Qhov ceev ntawm cov dej ntws qis dhau (<0.3m/s) yuav ua rau muaj cov teeb liab tsis muaj zog, thiab qhov ceev ntawm cov dej ntws siab dhau (>12m/s) yuav cuam tshuam rau kev ntsuas qhov ruaj khov vim muaj cua hlob.
3. Xeev Nruab Nrab hauv Cov Kav Dej
   • Cov khoom siv yuav tsum yog cov kua dej ib theem xwb (kua uas tsis muaj ntau lub npuas, cov khoom me me uas dai, lossis cov khoom tsis huv). Txwv tsis pub, cov npuas lossis cov khoom me me yuav cuam tshuam/cuam tshuam cov suab nrov, ua rau lub teeb liab poob lossis ua yuam kev.
   • Tsis txhob muab cov stratification, vortices, lossis turbulence hnyav ntawm cov khoom nruab nrab hauv cov kav dej (xws li ze ntawm cov li qub thiab cov twj tso kua mis), thiab xyuas kom meej tias qhov ntsuas yog qhov ruaj khov puv-yeeb nkab ntws.

II. Kev Xaiv Qhov Chaw Teeb tsa Sensor

1. Cov Kev Cai ntawm Cov Yeeb Nkab Ncaj
   • Yuav kom paub tseeb tias cov qauv dej ntws ruaj khov, qhov chaw teeb tsa sensor yuav tsum ua tau raws li qhov ntev ntawm cov yeeb nkab ncaj ua ntej thiab tom qab:
     • Sab saud (sab deb ntawm lub sensor): Yog tias muaj lub luj tshib, lub qhov dej, lub twj tso kua mis, lossis lwm yam khoom tiv thaiv ua ntej, nws yuav tsum yog ≥ 10 npaug ntawm txoj kab uas hla ntawm cov kav dej (10D); yog tias tsis muaj cov khoom nyuaj, nws yuav tsum yog ≥ 5D.
     • Downstream (sab ze rau lub sensor): ≥ 5D (yog tias muaj cov khoom tiv thaiv downstream, nws raug pom zoo kom ≥ 3D).
   • Tsis txhob teeb tsa rau ntawm qhov siab tshaj plaws ntawm cov kav dej (qhov chaw uas huab cua yuav sib sau ua ke) lossis qhov chaw qis tshaj plaws (qhov chaw uas slag yuav sib sau ua ke).
2. Kev Taw Qhia thiab Qhov Sib Nrug
   • Raws li cov khoom siv thiab txoj kab uas hla ntawm cov kav dej, xaiv txoj kev V (cov suab nthwv dej hla dhau cov kav dej, haum rau cov kab uas hla me thiab nruab nrab) lossis txoj kev Z (cov suab nthwv dej hla dhau cov kav dej ncaj qha, haum rau cov kab uas hla loj lossis cov kav dej tuab).
   • Ob lub sensors (qhov kawg xa thiab qhov kawg txais) yuav tsum tau teeb tsa symmetrically rau ob sab ntawm lub raj xa dej kom ntseeg tau tias txoj kev suab nthwv dej sib luag rau lub raj xa dej, thiab qhov sib nrug ua raws li cov qauv xam hauv phau ntawv qhia flowmeter (feem ntau cuam tshuam nrog lub raj xa dej txoj kab uas hla thiab lub kaum sab xis ntawm lub suab nthwv dej).
3. Tsis txhob cuam tshuam cov chaw
   • Khaws cia kom deb ntawm cov chaw cuam tshuam electromagnetic muaj zog (xws li lub cev muaj zog, transformers, zaus converters) kom tiv thaiv cov teeb liab electromagnetic los ntawm kev cuam tshuam nrog kev sib kis ultrasonic.
   • Khaws cia kom deb ntawm cov chaw uas ua rau muaj kev co (xws li cov twj tso kua mis, cov tshuab compressors). Yog tias tsim nyog, nruab cov ntaub thaiv kev co kom tiv thaiv kev sib txuas tsis zoo ntawm lub sensor vim yog kev co ntawm cov kav dej.

III. Cov ntsiab lus ntawm kev teeb tsa Sensor

1. Kev Kho Mob Nto ntawm Cov Kav Dej
   • Ua ntej kev teeb tsa, ntxuav qhov chaw ntawm cov kav dej kom tshem tawm cov xeb, xim, roj, lossis cov txheej oxide kom ntseeg tau tias muaj kev sib cuag ze ntawm lub sensor thiab cov kav dej (yog tias tsim nyog, xuab zeb kom txog thaum nws ci ntsa iab; cov kav dej uas tsis yog hlau yuav tsum tshem tawm cov av ntawm qhov chaw).
   • Yog tias qhov chaw ntawm cov kav dej tsis sib npaug, siv cov tshuaj sib txuas tshwj xeeb (xws li silica gel, glycerin) los sau cov qhov sib txawv thiab tshem tawm cua (cua yuav ua rau cov suab nrov tsis zoo). Cov tshuaj sib txuas yuav tsum sib xws nrog cov khoom nruab nrab (tsis ua rau cov kav dej puas).
2. Txoj Kev Kho Sensor
   • Siv ib lub khoom siv tshwj xeeb los kho lub sensor kom ruaj khov rau ntawm cov kav dej kom tsis txhob xoob (kev xoob yuav ua rau lub teeb liab tsis ruaj khov), tab sis xyuam xim rau lub zog kom tiv thaiv cov kav dej puas tsuaj lossis lub sensor puas tsuaj.
   • Rau cov kav dej uas yooj yim hloov pauv xws li cov yas, lub zog ntawm cov khoom siv yuav tsum nruab nrab kom tsis txhob muaj cov kav dej raug ntswj tiaj thiab cuam tshuam rau tus qauv ntws.
3. Kev Txuas Cable thiab Kev Tiv Thaiv
   • Cov xov hluav taws xob sensor yuav tsum tau khaws cia deb ntawm cov kab hluav taws xob siab kom tsis txhob muaj kev cuam tshuam rau cov teeb liab, thiab qhov ntev ntawm cov xov hluav taws xob yuav tsum ua tau raws li qhov yuav tsum tau ua hauv phau ntawv qhia (cov xov hluav taws xob ntev dhau yuav ua rau cov teeb liab tsis zoo).
   • Rau kev teeb tsa sab nraum zoov, nws yog qhov tsim nyog los tiv thaiv cov cables kom tsis txhob ntub dej (xws li kev teeb tsa cov pob qij txha uas tsis ntub dej) thiab tiv thaiv lawv ntawm kev raug tshav ntuj kom tsis txhob muaj kev laus ntawm cable.

IV. Kev Hloov Kho Ib Puag Ncig thiab Kev Ua Haujlwm

1. Kub thiab av noo ib puag ncig
   • Qhov kub thiab txias ntawm lub sensor yuav tsum nyob hauv qhov ntau ntawm cov khoom siv (feem ntau yog -30 ℃ ~ + 60 ℃). Tsis txhob raug rau qhov kub thiab txias heev, kub tsawg, lossis huab cua noo ntev (nruab cov khoom siv rwb thaiv tsev lossis cov khoom siv tiv thaiv hnub yog tias tsim nyog).
   • Yog tias qhov kub ntawm cov kav dej kub dhau (xws li >100 ℃), xyuas kom meej tias qhov kub ntawm lub sensor tsis kam tiv taus kom tsis txhob ua haujlwm ntawm tus neeg sawv cev txuas lossis puas tsuaj rau lub sensor vim qhov kub siab.
2. Cov Kev Cai Tiv Thaiv Kev Tawg thiab Kev Tiv Thaiv
   • Thaum txhim kho rau hauv qhov chaw uas yooj yim tawg thiab tawg (xws li cov chaw ua haujlwm tshuaj lom neeg), xaiv cov sensors uas tiv taus kev tawg uas ua tau raws li qhov yuav tsum tau ua ntawm qib tiv taus kev tawg.
   • Rau sab nraum zoov lossis qhov chaw noo noo, xyuas kom meej tias qib tiv thaiv cov khoom siv yog ≥ IP65 kom tiv thaiv dej nag thiab hmoov av nkag.

V. Kev Ua Haujlwm thiab Kev Txheeb Xyuas Tom Qab Kev Teeb Tsa

1. Kev Tshawb Pom Lub Zog Teeb Liab
   • Tom qab kev teeb tsa, xyuas lub zog ntawm lub teeb liab los ntawm lub flowmeter host (feem ntau yog qhia ua feem pua ​​lossis decibel). Xyuas kom lub teeb liab ruaj khov (pom zoo ≥ 60%). Yog tias lub teeb liab tsis muaj zog, rov kho qhov chaw ntawm lub sensor lossis tus neeg sawv cev txuas.
   • Saib seb qhov ntws tam sim ntawd thiab qhov ntws sib sau ua ke puas phim qhov xwm txheej ua haujlwm tiag tiag (kev txheeb xyuas tuaj yeem ua tau los ntawm kev sib piv nrog cov nqi ntws paub lossis cov nqi empirical).
2. Kev Tshawb Xyuas Kev Ruaj Ntseg Mus Ntev
   • Tshawb xyuas qhov kho ntawm lub sensor thiab lub xeev ntawm tus neeg sawv cev txuas (seb nws qhuav lossis tsis tau sib txuas), tshwj xeeb tshaj yog thaum muaj kev co loj lossis kev hloov pauv kub.