Nyob rau hauv kev lag luam automation tswj tshuab, lub siab transmitter yog renowned raws li "qhov muag" ntawm cov txheej txheem kev lag luam. Qhov raug thiab ruaj khov ntawm nws cov ntaub ntawv yog ncaj qha ntsig txog kev ruaj ntseg ntawm cov khoom, cov khoom zoo, thiab cov khoom siv lifespan. Txawm li cas los xij, hauv kev ua haujlwm tiag tiag, lub tshuab xa hluav taws xob tsis tas yuav ua haujlwm hauv chav ntsuas twj ywm. Kev vibration, ib qho kev cuam tshuam ntau thiab feem ntau tsis txaus ntseeg, yog qhov ua txhaum loj ua rau ntsuas qhov yuam kev, ntsuas kev puas tsuaj, thiab lub tswb tsis raug.
Tsab ntawv xov xwm no yuav tshawb xyuas qhov kev ua haujlwm ntawm kev vibration ntau heev, nthuav tawm ntau yam kev cuam tshuam ntawm kev co ntawm kev ntsuas siab, thiab muab cov kev daws teeb meem zoo xws li kev xaiv mus rau kev teeb tsa thiab commissioning.
I. Kev txheeb xyuas cov xwm txheej ua haujlwm vibration
Kev vibration ib puag ncig yog ubiquitous, tab sis cov xwm txheej hauv qab no yuav tsum tau ceev faj tshwj xeeb. Yog tias tus neeg siv khoom lub vev xaib muaj cov lus piav qhia zoo li "cov yeeb nkab tsis tu ncua" lossis "cov yeeb nkab dhia txhua zaus lub valve qhib," nws tuaj yeem raug txiav txim raws li qhov chaw muaj zog vibration.
1. Cov kav dej txuas ntxiv rau cov khoom siv fais fab
Qhov no yog qhov feem ntau vibration qhov chaw. Thaum cov khoom siv xws li twj tso kua mis (tshwj xeeb tshaj yog cov twj reciprocating), compressors (tshwj xeeb tshaj yog ntsia hlau compressors), thiab cov kiv cua ua haujlwm, lawv tsim cov pulsations raws sij hawm. Lub inlet thiab qhov hluav taws xob pipelines ntawm cov cuab yeej no feem ntau vibrate synchronously nrog loj amplitude thiab tsawg zaus, ua rau muaj kev cuam tshuam tseem ceeb rau cov transmitters ntsia rau hauv pipelines.
2. Cov khoom siv lub cev lossis cov kav dej uas nyob ib sab
Thaum cov khoom siv xws li cov tso tsheb hlau luam, vibrators, crushers, thiab pob zeb ua haujlwm, lub cev vibrates hnyav heev. Yog ibsiab transmitteryog ntsia ncaj qha rau ntawm cov khoom siv lub cev los yog cov yeeb nkab luv luv txuas nrog nws, nws yog qhov sib npaug ntawm qhov ncaj qha txuas mus rau qhov chaw vibration.
3. Instantaneous shocks tshwm sim los ntawm kua pulsation
Ntxiv nrog rau cov neeg kho tshuab kev co, cov kua dej tsis ruaj khov kuj tuaj yeem ua rau "vibration" nyhuv. Tej yam xwm txheej muaj xws li:
Kev nyab xeeb valve pop-up/reset:Tsim kom muaj zog loj heev yoj.
Dej rauj / chav rauj:Thaum cov li qub qhib lossis kaw sai, cov kua dej kinetic zog tam sim ntawd hloov mus rau hauv lub zog siab, ua rau muaj kev puas tsuaj tsis zoo.
Txawm hais tias cov kev poob siab no yog tam sim no, lawv muaj qhov tseem ceeb tshaj plaws, yooj yim ua rau sensor diaphragm qaug zog lossis xoob ntawm cov khoom siv hluav taws xob.
II. Core Impacts of Vibration on Pressure Measurement
Kev vibration tsis yog ua rau lub ntsuas "co"; nws puas tsuaj rau qhov ntsuas qhov system los ntawm peb qhov ntev: mechanical, sensing, thiab signal.
1. Txo kev ntseeg siab - Lub cev puas tsuaj
Ntev - lub sij hawm raug rau ib puag ncig vibratory ua rau irreversible mechanical puas nyob rau hauv lub siab transmitter:
Solder sib koom cracking:Fine solder pob qij txha ntawm lub rooj tsav xwm Circuit Court undergone qaug zog tawg nyob rau hauv alternating stress.
Connector loosening:Kev sib txuas cov khoom xws li ribbon cables thiab pins ua rau kev sib cuag tsis zoo vim kev co, ua rau muaj kev cuam tshuam tsis sib xws.
Zaub kev puas tsuaj:Pins thiab backlight Cheebtsam ntawm LCD lossis LED modules tawg, ua rau cov ntu uas ploj lawm, flickering, lossis txawm tias lub vijtsam dawb.
Impulse kab rupture:Rigid impulse kab tawg thiab xau ntawm cov hauv paus hniav los yog fittings vim kev ntxhov siab concentration.
2. Kev ntsuas tsis raug - Cov nyhuv nrawm (tshwj xeeb tshaj yog rau cov khoom siv hluav taws xob tsawg)
Qhov no yog qhov feem ntau insidious thiab tseem ceeb cuam tshuam. Qee cov sensors, thaum hnov qhov siab, muaj qhov rhiab diaphragm nrog qee qhov loj. Thaum tag nrho cov transmitter vibrates nrog lub raj xa dej, lub diaphragm generates ntxiv hloov chaw vim inertia, uas superimposes ntawm lub teeb liab siab tiag tiag, sib npaug rau "siab phem."
Phenomenon:Lub teeb liab tso zis qhia pom qhov hloov pauv raws sij hawm raws li kev vibration zaus, lossis xoom drift.
Qhov hnyav:Rau micro-Differential siab transmittersnrog ib tug ntau ntawm tsuas yog ob peb puas los yog txhiab Pascals, qhov yuam kev tshwm sim los ntawm kev vibration acceleration tuaj yeem poob dej tag nrho cov teeb liab siab tiag tiag.
3. Kev cuam tshuam kev sib txuas lus - "Cov ntaub ntawv tsis zoo dhia"
Kev lag luam niaj hnub no feem ntau siv cov kev sib txuas lus digital xws li HART thiab Foundation Fieldbus superimposed ntawm 4-20mA analog teeb liab. Kev vibration tsis tsuas yog cuam tshuam nrog cov teeb liab analog amplitude tab sis kuj ua rau lub suab nrov ntawm cov kab teeb liab, ua rau kev puas tsuaj ntawm kev sib txuas lus digital.
Tej yam tshwm sim:Tus nqi siab tau txais los ntawm chav tswj tau dhia tsis zoo, tam sim ntawd mus dhau - ntau yam, lossis muaj kev cuam tshuam ntau zaus. Tus neeg siv khoom thawj zaug feem ntau yog "lub transmitter tawg," thaum lub hauv paus ua rau muaj kev vibration cuam tshuam nrog lub teeb liab voj.
III. Systematic Solutions: Los ntawm Qhov Chaw mus rau Kev Txiav Txim
Kev daws teeb meem kev vibration tsis tuaj yeem tso siab rau ib kauj ruam tab sis yuav tsum ua raws li lub hauv paus ntsiab lus ntawm "tsis txhob zam yog tias ua tau, cais yog tias ua tau, tiv thaiv yog tias tsim nyog." Ntawm no yog plaub - txheej txheem kev daws teeb meem:
Txheej 1: Kev zam qhov tseem ceeb - Hloov qhov chaw teeb tsa
Qhov no yog qhov tseem ceeb tshaj plaws, tus nqi - ua tau zoo, thiab zoo tshaj - txoj kev ua. Qhia tus neeg siv khoom kom hloov lawv lub siab: tsis txhob ua kom lub transmitter hloov mus rau qhov kev vibration, txav lub transmitter kom deb ntawm kev co.
Kev ntsuas tshwj xeeb:Siv capillary tej thaj chaw deb mounting los yog ncua impulse piping rau nruab lub transmitter lub cev ntawm ib tug ruaj bracket los yog kem yam tsawg kawg yog 1.5-2 meters deb ntawm lub vibration qhov chaw, tawm tsuas yog tej thaj chaw deb flange los yog impulse kev twb kev txuas ntawm lub raj.
Siv tau scenario:Txhua qhov xwm txheej muaj qhov chaw hloov pauv cov raj xa dej, tshwj xeeb tshaj yog nyob rau ntawm qhov hluav taws xob ntawm cov twj reciprocating.
Lub ntsiab lus tseem ceeb ntawm kev sib txuas lus:"Txuag lub taub hau transmitter mus rau qhov tsis yog-vibrating steel beam, txuas nrog capillary - nqis peev ib zaug, kev co- pub dawb rau lub neej."
Txheej 2: Kev cais lub cev - Txiav txoj kev coj ua
Thaum cov chaw taws teeb teeb tsa tsis tuaj yeem ua tau, lub caij hloov pauv yuav tsum tau muab tso rau ntawm lub transmitter thiab qhov chaw vibration.
Kev ntsuas tseem ceeb:Siv lub stainless hlau saj zawg zog hose (hlau hose) es tsis txhob ntawm ib tug nruj impulse yeeb nkab. Lub hose saj zawg zog absorbs feem ntau ntawm cov neeg kho tshuab kev co, converting lub nruj conduction rau hauv ib tug saj zawg zog kev twb kev txuas.
Cov kev ceev faj:Lub hose ntev yuav tsum yog nruab nrab (feem ntau tsis pub tsawg tshaj 500mm), tsis txhob me me dhau lub vojvoog khoov uas tuaj yeem ua rau qaug zog. Tsis tas li ntawd, siv kev vibration-damping yeeb nkab brackets (U-clamps nrog roj hmab pads) kom ruaj ntseg lub transmitter lub cev, es tsis txhob screwing lub transmitter ncaj qha mus rau cov yeeb nkab nruj.
Txheej 3: Xaiv Kev Txhawb Nqa - Xaiv Kev vibration-Cov khoom siv tiv taus
Rau cov ntsiab lus tseem ceeb ntsuas qhov kev vibration tsis tuaj yeem zam tau tag nrho, yuav tsum tau them nyiaj los ntawm theem kev xaiv khoom.
Cov ntsiab lus tseem ceeb:Pom zoo kom ua tiav welded qauv. Kev sib txuas ntawm lub sensor, hluav taws xob vaj tsev nyob, thiab lub davhlau ya nyob twg thaiv yog tsim los siv laser vuam es tsis txhob O-rings lossis threaded kev sib txuas. Kev tsim kho welded tsis tsuas yog tshem tawm txoj hauv kev tawm, tab sis kuj tseem txhim kho tag nrho cov khoom siv dag zog, zoo tiv thaiv kev sib koom ua ke qaug zog thiab txuas txuas.
Ntxiv nta:
Xaiv cov rooj sib tham hauv Circuit Court nrog cov potting tag nrho thiab sealing.
Yuav tsum tau lub transmitter kom dhau siab -cov qauv kev vibration xeem (piv txwv li, IEC 60068-2-6, 10-60Hz, 0.35mm amplitude lossis siab dua).
Tsis txhob ua qauv nrog ntev -cov khoom siv lead ua, lossis xaiv qhov chaw taws teeb -mount zaub.
Txheej 4: Kev Kho Software - Lub Sijhawm Ua Lag Luam Teb rau Kev ruaj ntseg
Nyob rau hauv cov xwm txheej uas lub cev txhais tau tias yog txwv thiab cov txheej txheem tso cai rau ib tug qeeb teb, siv software/hardware parameter hloov mus rau "filter" lub vibration suab.
Txoj kev tseem ceeb:Ua kom lub sijhawm damping tsis tu ncua.
Txoj Cai:Damping ua zoo li qis - dhau lim. Ua kom tus nqi damping smooths tawm lub teeb liab glitches tshwm sim los ntawm siab - zaus vibration.
Kev ua haujlwm:Kho lub sij hawm damping default (piv txwv li, 0.2 vib nas this) mus rau 1-2 vib nas this, los yog ntev dua (nyob ntawm seb lub vibration zaus).
Cov nyhuv:Qhov kev nyeem ntawv ua tam sim ntawd ruaj khov, tshem tawm qhov hloov pauv tsis muaj nuj nqis.
Tus nqi:Cov lus teb tiag tiag rau kev hloov siab qeeb qeeb. Nws tsis haum rau cov ntawv thov uas yuav tsum tau tshawb pom sai sai ntawm kev hloov siab ceev (piv txwv li, kev nyab xeeb valve pop- nce kev saib xyuas), tab sis nws yog qhov tsim nyog rau cov xwm txheej uas qhov siab yog qhov ruaj khov thiab tsuas yog xav tau kev co lim dej.
Cov txheej txheem Advanced:Qee qhov ntse transmitters txhawb kev teeb tsa sib txawv damping qhov tseem ceeb rau "tus nqi tso tawm" thiab "tus nqi tso zis," tso cai rau kev ruaj khov ntawm -qhov chaw nyeem ntawv thaum khaws cov lus teb sai dua.
MDM7000 Ntse Siab Transmitter
Thib peb-XYZ triaxial vibration test
Ntau zaus:10Hz ~ 2000Hz
Peak-rau-peak amplitude:1 hli
Kev ntsuas kub:24.4°C dej
Test humidity:52.1% RH
Lub sijhawm vibration:30 feeb
