Vortex flow meter los yog turbine flow meter?

(I) Vortex Flow Meter: Engineering Application of the Karman Vortex Street Effect

Lub vortex flow meter ua haujlwm raws li qhov dej -paub Karman vortex txoj kev cuam tshuam. Thaum cov kua dej ntws los ntawm cov khoom uas tsis yog - streamlined, piv txwv li, lub tshuab hluav taws xob vortex, ob kab ntawm cov vortex tsis tu ncua yog tsim los hloov pauv ntawm ob sab hauv qab. Cov vortices no, zoo li cov kab uas zoo sib xws, hu ua Karman vortex txoj kev. Qhov zaus ntawm cov vortex tiam no muaj feem cuam tshuam nrog cov kua dej tshaj tawm. Los ntawm kev ntsuas qhov vortex zaus, cov kua dej tshaj tawm tuaj yeem suav tau zoo, thiab yog li tus nqi ntws tuaj yeem txiav txim siab.

Piv txwv li, xav txog qhov sawv ntawm tus dej thiab pom cov dej ntws hla pob zeb, tsim me me, tig vortices qab lawv. Yog tias peb tuaj yeem suav qhov nrawm ntawm cov vortices, peb tuaj yeem kwv yees tus nqi dej ntws. Lub vortex flow meter siv lub hauv paus ntsiab lus no, tab sis nws yog qhov tseeb dua thiab kev tshawb fawb. Nws siv cov sensors los kuaj xyuas lub feeb hloov siab lossis kev vibrations tshwm sim los ntawm vortex tiam, hloov mus rau hauv cov teeb liab hluav taws xob. Tom qab ua tiav cov teeb liab thiab suav, qhov ntws ntawm cov kua dej tuaj yeem ua kom pom tseeb.

(II) Turbine Flow Meter: Ntsuas cov kua Kinetic zog tig ceev

Lub turbine flow meter cia siab rau lub zog ntawm cov kua los tsav lub turbine txoj kev sib hloov. Thaum cov kua nkag mus rau hauv lub ntsuas ntsuas, nws thawj zaug dhau los ntawm kev qhia vane, uas ua haujlwm zoo li tus neeg tsav tsheb, teeb tsa cov kua dej los cuam tshuam lub turbine ntawm tus nqi ruaj khov thiab kev taw qhia. Raws li qhov cuam tshuam ntawm cov kua dej, lub turbine pib tig nrawm, thiab nws qhov kev sib hloov ceev yog ncaj qha proportional rau cov kua dej ntws. Qhov no zoo ib yam li siv lub kiv cua los txhawb lub tshuab cua; lub zog cua, lub tshuab cua nrawm nrawm dua.

Txhawm rau ntsuas lub turbine qhov kev sib hloov ceev, lub turbine flow meter siv lub magnetoelectric sensor. Ib tug sib nqus conductor yog ntsia rau ntawm qhov rotating ib feem ntawm lub turbine. Raws li lub turbine rotates, lub magnetic conductor rotates ib yam nkaus thiab, lub sij hawm hloov lub magnetic tsis kam ntawm lub magnetic Circuit Court. Raws li lub hauv paus ntsiab lus ntawm electromagnetic induction, qhov kev hloov ntawm magnetic resistance induces coj hluav taws xob mem tes signals nyob rau hauv lub kauj. Los ntawm kev sau, txheeb xyuas, thiab ua cov zaus ntawm cov hluav taws xob pulse signals, cov kua dej sib thooj tuaj yeem suav thiab nthuav tawm.

Tom qab nkag siab txog lawv cov qauv kev ua haujlwm, tam sim no peb yuav muab piv rau cov yam ntxwv ntawm vortex flow meter thiab turbine flow meter, uas yuav pab peb xaiv qhov tsim nyog rau kev siv tswv yim.

(I) Kev Ua Tau Zoo

Nyob rau hauv cov nqe lus ntawm qhov tseeb, turbine flow meters excel, boasting exceptionally siab ntsuas precision nrog ib tug yuam kev ntau yam feem ntau tswj nyob rau hauv ± 0.5% - ± 1%. Qhov no zoo ib yam li kev siv lub siab - qhov tseeb qhov sib npaug rau qhov hnyav, muab cov txiaj ntsig zoo kawg nkaus. Qhov no high precision ua turbine flow meters qhov kev xaiv nyob rau hauv daim ntawv thov uas tsis tshua muaj neeg txaus txaus, xws li kev lag luam kev sib hais haum thiab zoo tshuaj ntau lawm. Hauv kev lag luam roj, ob tus neeg yuav khoom thiab cov muag khoom xav tau kev ntsuas qhov tseeb ntawm cov roj ntws; lub siab precision ntawm turbine flow meters ua kom muaj kev ncaj ncees thiab ncaj ncees kev lag luam, tiv thaiv kev lag luam tsis sib haum xeeb los ntawm kev ntsuas qhov yuam kev.

Vortex flow meter kuj muaj qhov raug zoo, feem ntau nrog kev ua yuam kev ntawm ± 1% - ± 2%. Txawm hais tias me ntsis tsawg dua qhov tseeb ntawm turbine flow meters, qhov tseeb no yog txaus rau feem ntau cov ntawv thov kev lag luam. Nyob rau hauv cov txheej txheem ntau lawm qhov twg precision yuav tsum tsis yog tshwj xeeb tshaj yog nruj, vortex flow meters, nrog rau lawv cov yam ntxwv, kuj muaj peev xwm ua si lub luag hauj lwm tseem ceeb, muab kev ntseeg tau txaus cov ntaub ntawv rau cov txheej txheem ntau lawm.

(II) Siv Media

Vortex flow meter yog zoo li txhua yam - rounders, hloov tau rau ntau hom xov xwm. Txawm hais tias nws yog kua, roj, lossis chav dej, lawv tuaj yeem tswj tau yooj yim. Hauv kev tsim tshuaj lom neeg, nws yog qhov tsim nyog los ntsuas qhov ntws ntawm cov kua dej nrog cov khoom sib txawv. Vortex flow meter tuaj yeem ua haujlwm ruaj khov thiab raug nyob rau hauv qhov chaw sib tham nyuaj. Ntxiv mus, lawv tsis rhiab heev rau kev hloov hauv cov kua dej ntom ntom thiab viscosity; Txawm hais tias cov yam ntxwv ntawm qhov nruab nrab hloov mus rau qee qhov, vortex flow meter tseem tuaj yeem tswj xyuas qhov ntsuas qhov tseeb.

Turbine flow meters, ntawm qhov tod tes, zoo li "huv freaks." Lawv tsim nyog rau kev ntsuas huv, qis - cov kua dej muaj kuab paug, xws li dej thiab roj teeb. Qhov no yog vim hais tias turbine flow meters muaj rotating qhov chaw hauv. Yog tias cov kua dej muaj cov khoom raug tshem tawm, ua npuas dej, lossis lwm yam tsis huv, nws tuaj yeem ua rau muaj kev puas tsuaj los yog jamming ntawm lub turbine rotor, ua rau muaj kev cuam tshuam loj rau kev ntsuas qhov tseeb thiab tej zaum yuav ua rau lub ntsuas dej tsis zoo. Hauv kev lag luam khoom noj khoom haus thiab dej haus, qhov twg nws yog qhov tsim nyog los ntsuas tus nqi ntawm cov khoom siv kua ntshiab, turbine flow meters tuaj yeem ua tau zoo heev vim lawv qhov raug siab thiab hloov tau zoo los ntxuav cov kua. Txawm li cas los xij, yog tias nws tsim nyog los ntsuas qhov ntws ntawm cov dej khib nyiab uas muaj impurities, turbine flow meters tsis haum; Hauv qhov no, vortex flow meter yuav yog qhov kev xaiv zoo dua.

(III) Tus Nqi thiab Kev Kho

Los ntawm kev xav txog tus nqi, vortex flow meters muaj qhov pib nqis peev tsawg, uas yog qhov txaus nyiam rau cov tuam txhab uas muaj peev nyiaj tsawg. Ntxiv mus, lawv cov nqi kho mob kuj tseem tsawg, nrog rau cov nqi kho txhua xyoo kwv yees li 1% ntawm tus nqi khoom qub. Qhov no feem ntau yog vim tsis muaj kev txav ntawm cov khoom siv, cov qauv yooj yim thiab muaj zog, thiab tsis tshua muaj kev cuam tshuam rau kev ua haujlwm tsis zoo thaum lub sijhawm ua haujlwm, ua rau muaj kev saib xyuas tsawg dua thiab ntau zaus. Nyob rau hauv lub sij hawm ntev - tej yaam num kev lag luam, tus nqi saib xyuas qis ntawm vortex flow meters tuaj yeem txuag cov tuam txhab nyiaj ntau.

Turbine flow meter muaj qhov pib peev ntau dua vim lawv cov txheej txheem tsim khoom ntau dua thiab qhov yuav tsum tau ua. Txawm li cas los xij, lawv cov nqi kho mob yuav tsum tsis txhob kwv yees. Vim hais tias ntawm qhov kev sib hloov sab hauv, cov calibration thiab lubrication tsis tu ncua yog tsim nyog los xyuas kom meej qhov ntsuas qhov tseeb thiab kev ua haujlwm ib txwm muaj. Tus nqi tu txhua xyoo ntawm lub tshuab ntsuas dej ntws tuaj yeem ncav cuag 3% -5% ntawm tus nqi khoom qub. Thaum siv, turbine tig yuav tsum tau kuaj xyuas tsis tu ncua los tiv thaiv turbine jamming los ntawm cov kua impurities los yog corrosion. Yog tias pom cov turbine hnav, cov khoom yuav tsum tau hloov tam sim ntawd. Cov haujlwm tu vaj tse no yuav tsum muaj peev txheej ntawm cov neeg ua haujlwm thiab cov peev txheej.

Hauv kev siv tswv yim, kev teeb tsa thiab kev siv kom zoo yog qhov tseem ceeb rau kev ua haujlwm ntawm cov ntsuas ntws. Hauv qab no yog qee qhov kev txiav txim siab rau kev teeb tsa thiab siv vortex flowmeter thiab turbine flowmeter.

(I) Installation Points

Vortex flow meter muaj qhov yuav tsum tau ua kom yooj yim rau kev teeb tsa, uas yog ib qho ntawm cov laj thawj rau lawv qhov chaw nyob hauv kev lag luam. Feem ntau, lawv muaj cov kev xav tau qis dua rau cov kav dej ntws ncaj qha thiab qis qis; Qhov ntev ntawm cov yeeb nkab ncaj nraim feem ntau tsuas yog yuav tsum yog 10 npaug ntawm cov yeeb nkab txoj kab uas hla (10D), thiab cov yeeb nkab ncaj nraim qhov ntev yuav tsum yog 5 npaug ntawm cov yeeb nkab txoj kab uas hla (5D). Qhov no tso cai rau kev yooj yim installation txawm nyob rau hauv cov xwm txheej uas txwv qhov chaw thiab complex yeeb nkab layouts. Tsis tas li ntawd, vortex flow meters yog hloov tau rau hauv lawv cov kev taw qhia kev teeb tsa, thiab tuaj yeem ntsia tau kab rov tav lossis ntsug. Thaum txhim kho kab rov tav, xyuam xim rau qhov chaw sensor, thiab sim kom tsis txhob txhim kho nws ntawm qhov qis tshaj ntawm cov yeeb nkab kom tsis txhob muaj cua npuas lossis impurities cuam tshuam rau kev ntsuas; Thaum txhim kho vertically, cov kua yuav tsum ntws los ntawm hauv qab mus rau sab saum toj kom tsis txhob muaj roj tsub zuj zuj nyob rau hauv lub sensor thiab xyuas kom meej ntsuas qhov tseeb.

Nyob rau hauv sib piv, turbine flow meters muaj ntau stringent xav tau rau installation tej yam kev mob. Nws yuav tsum muaj kev lees paub nruj ntawm cov yeeb nkab ncaj 20 npaug ntawm cov yeeb nkab txoj kab uas hla (20D) sab sauv thiab cov yeeb nkab ncaj 5 npaug ntawm cov yeeb nkab txoj kab uas hla (5D) nqes. Qhov no yog vim qhov ntsuas qhov tseeb ntawm lub turbine flow meter yog nyob ntawm qhov ruaj khov ntawm cov kua dej ntws. Tsuas yog ib txoj kab ncaj nraim ntev txaus tuaj yeem xyuas kom meej tias cov kua dej tuav ruaj khov tshaj tawm thiab cov kev taw qhia thaum nkag mus rau lub ntsuas ntsuas, tsis txhob muaj zog tsis sib xws uas tsim los ntawm cov dej ntws tsis ruaj khov xws li vortices thiab turbulence ntawm cov turbine hniav, yog li ua kom qhov tseeb ntawm qhov ntsuas tau. Yog hais tias cov kav dej ncaj nraim ntawm qhov ntev tsis txaus, cov kua dej yuav ntws tsis tu ncua thaum nkag mus rau qhov ntsuas ntsuas, ua rau muaj kev ntsuas qhov yuam kev. Thaum txhim kho lub turbine flow meter, tshwj xeeb yuav tsum tau them rau cov kev taw qhia ntawm cov kua; Nws yuav tsum tau xyuas kom meej tias cov dej ntws cov kev taw qhia yog raws li cov kev taw qhia qhia los ntawm lub xub nyob rau hauv lub sensor vaj tse. Yog tias qhov kev taw qhia ntawm kev teeb tsa tsis raug, lub turbine yuav tsis tig kom zoo, ua qhov ntsuas qhov tseeb tsis tuaj yeem ua tsis tau, thiab tseem tuaj yeem ua rau lub ntsuas ntsuas dej puas.

(II) Kev ceev faj rau kev siv

Thaum siv vortex flow meter, yuav tsum tau saib xyuas tshwj xeeb kom tsis txhob muaj kev cuam tshuam sab nraud. Txij li thaum lub vortex flow meter ntsuas ntws los ntawm kev txheeb xyuas cov teeb liab tsim los ntawm vortices, cov teeb liab no kuj tsis muaj zog thiab yooj yim cuam tshuam los ntawm sab nraud electromagnetic teb, kev vibrations, thiab lwm yam. Yog li ntawd, thaum lub sij hawm installation, vortex flowmeters yuav tsum tau khaws cia kom deb ntawm qhov chaw muaj zog electromagnetic cuam tshuam, xws li loj motors thiab transformers. Nyob rau tib lub sijhawm, xyuas kom lub flowmeter muaj qhov zoo hauv av kom txo tau qhov cuam tshuam ntawm electromagnetic cuam tshuam ntawm lub teeb liab. Yog hais tias lub vortex flowmeter tau nruab rau hauv ib puag ncig uas muaj kev vibration muaj zog, kev ntsuas kev vibration damping yog qhov tsim nyog, xws li siv cov vibration damping pads thiab cov pob qij txha hloov tau, kom tsis txhob muaj kev vibration los ntawm kev xa mus rau lub flowmeter thiab cuam tshuam rau kev ntsuas qhov tseeb.

Rau turbine flowmeters, nws yog ib qho tseem ceeb kom tsis txhob muaj kev vibration hnyav thiab cuam tshuam thaum siv. Vim hais tias lub turbine nyob rau hauv lub flowmeter yog ib tug precision rotating tivthaiv, kev co loj heev los yog tej yam yuav ua rau deformation los yog puas rau lub turbine rotor, los yog ceev bearing hnav, yog li cuam tshuam rau lub flowmeter ntsuas qhov tseeb thiab kev pab lub neej. Hauv kev ua haujlwm txhua hnub, tsis txhob pib lossis tso tseg cov khoom siv loj nyob ze ntawm lub flowmeter, vim qhov no yuav ua rau lub raj xa dej vibration. Tsis tas li ntawd, thaum tswj lossis kho cov kav dej, ua tib zoo tiv thaiv lub turbine flowmeter los ntawm kev cuam tshuam tsis zoo. Tsis tas li ntawd, txij li qhov ntsuas qhov tseeb ntawm turbine flowmeters cuam tshuam los ntawm kev hloov pauv hauv cov kua dej kub thiab siab, ua tib zoo saib xyuas cov dej kub thiab siab thaum siv kom ntseeg tau tias lawv nyob hauv qhov ntsuas ntsuas qhov ua haujlwm. Yog tias qhov kub thiab txias hloov pauv yog qhov tseem ceeb, kev them nyiaj thiab kho qhov ntsuas ntsuas yuav tsim nyog los xyuas kom meej.

Hauv kev lag luam petrochemical, vortex flow meters yog dav siv rau chav ntsuas thiab ntsuas corrosive media. Turbine flow meter yog siv ntau dua hauv kev ua lag luam roj thiab hloov daim ntawv thov vim lawv qhov siab.

Hauv cov tshuab cua sov hauv nroog, vortex flow meter yog qhov kev xaiv zoo tshaj plaws rau kev ntsuas dej kub, raws li lawv qhov siab - kub tsis kam thiab tsis tshua muaj siab poob zoo kawg nkaus raws li qhov yuav tsum tau ua.

Hauv kev lag luam khoom noj thiab tshuaj, qhov uas yuav tsum tau ua kom huv si yog qhov siab heev, txhua yam -stainless steel turbine flow meters yog qhov tsim nyog, vim tias lawv cov phab ntsa du tsis tshua muaj kab mob loj hlob.

Vortex flow meter feem ntau raug xaiv rau ntev - kev saib xyuas cov kav dej nyob deb vim tias lawv yuav luag tsis ua rau lub cev poob siab, uas yog qhov tseem ceeb rau kev txo cov twj siv zog.

Media Priority Principple:

Vortex flow meters yog nyiam rau cov xwm txheej uas muaj impurities, corrosive media, lossis multiphase flow; turbine flow meter raug xaiv kom huv si, qis -cov kua dej viscosity yuav tsum muaj kev ntsuas siab -.

Qhov tseeb matching txoj cai:

Rau cov xwm txheej xws li kev lag luam sib tham thiab kev tswj xyuas qhov tseeb, turbine flow meters xav tau qhov tseeb ntawm ± 0.5%; vortex flow meter tuaj yeem siv rau kev tswj cov txheej txheem niaj hnub.

Maintenance adaptability txoj cai:

Vortex flow meter raug xaiv rau thaj chaw deb uas tsis muaj kev saib xyuas lossis ntev - cov haujlwm ua haujlwm ntev; turbine flow meters raug xaiv rau cov xwm txheej uas muaj peev xwm ua haujlwm tsis tu ncua thiab cov kev cai nruj nruj.