Hauv kev tsim khoom, cov khoom siv xws li twj, kiv cua, compressors, thiab conveyors feem ntau yog tsav los ntawm lub tshuab hluav taws xob. Ntau tus neeg xav tias lub cev muaj zog tsuas yog xav tau "pib thiab khiav," tab sis qhov tseeb, lub sijhawm pib yog feem ntau thaum lub kaw lus ntsib qhov cuam tshuam loj tshaj plaws. Kev pib ncaj qha tuaj yeem ua rau muaj kev kub ntxhov tam sim no, kev hloov pauv hluav taws xob, kev poob siab, dej rauj, thiab kev puas tsuaj rau cov bearings, li qub, cov ntsaws ruaj ruaj, thiab lwm yam khoom.
A soft starteryog tsim los ua kom lub cev muaj zog pib smoother. Nws maj mam nce qhov voltage thov rau lub cev muaj zog, txwv qhov pib tam sim no thiab tso cai rau cov khoom siv kom nrawm tsis tu ncua los ntawm kev ua haujlwm tsis tu ncua mus rau ib txwm ua haujlwm. Rau cov twj tso kua mis, kiv cua, compressors, thiab cov cuab yeej zoo sib xws uas tsis tas yuav hloov kho nrawm tab sis muaj kev cuam tshuam rau kev pib poob siab,soft startertuaj yeem txo cov neeg siv khoom hnav, txo qhov kev pheej hmoo ntawm kev poob qis, thiab txhim kho kev ntseeg tau ntawm kev ua haujlwm.
Yog tias cov cuab yeej tsis tsuas yog xav tau kev pib ua haujlwm zoo xwb tab sis kuj yuav tsum tau hloov kho sai raws li kev ua haujlwm tiag tiag, kev hloov pauv zaus, lossisVFD, feem ntau yog qhov kev xaiv zoo dua. AVFDhloov qhov zaus thiab qhov hluav taws xob nkag mus rau lub cev muaj zog, tso cai rau lub cev muaj zog sib txawv raws li qhov xav tau. Piv txwv li, thaum lub twj tso kua mis tsis tas yuav khiav lag luam ntawm tag nrho cov khiav, lub cev muaj zog ceev yuav raug txo kom txuag tau lub zog. Cov kiv cua, cov tshuab xa khoom, thiab qhov tsis tu ncua - cov tshuab xa dej siab kuj tseem siv tauVFDtswj kom ua tiav ruaj khov thiab lub zog- ua haujlwm tau zoo.
Txoj Cai Ua Haujlwm
A soft startertuaj yeem nkag siab tias yog ib qho khoom siv uas "qhib qhib lub throttle" rau lub cev muaj zog. Nws tsuas yog tswj qhov pib thiab nres cov txheej txheem los ntawm kev tswj qhov voltage. Nws tus nqi tseem ceeb yog txo qhov pib tam sim no thiab kev cuam tshuam rau txhua yam.
A VFDzoo li "electronic gearbox." Nws thawj zaug hloov AC lub zog rau hauv DC lub zog, thiab tom qab ntawd hloov nws rov qab rau hauv AC lub zog nrog kev hloov kho zaus thiab qhov hluav taws xob. Vim tias qhov zaus tuaj yeem hloov pauv, lub zog ceev kuj tseem tuaj yeem tswj tau tas li.
Daim duab 1. Simplified Selection Logic
Tej kev siv
Mos pibthiabVFDsyog siv dav hauv cov twj, kiv cua, compressors, conveyors, mining, petrochemical, dej hauv nroog, thiab lwm yam kev lag luam. Cov ntawv thov no feem ntau suav nrog qhov pib loj tam sim no, hloov pauv cov xwm txheej, lossis cov kev xav tau ntau lawm.
Hauv ib qho 55 kW circulating dej cov ntaub ntawv hais nyob rau hauv lub tuam txhab cov ntaub ntawv, tom qab siv ib tug tsawg-voltage variable- zaussoft- pibtxee, qhov pib tam sim no raug txo los ntawm 5-7 npaug ntawm qhov ntsuas tam sim no kom tsawg dua 1.5 npaug. Nyob rau tib lub sijhawm, kev cuam tshuam rauj dej tau txo qis, thiab kev pabcuam lub neej ntawm cov tshuab foob tau txhim kho.
Qhov taw qhia tseem ceeb sib piv
| Qhov taw qhia | Tus nqi khoom / piav qhia |
|---|---|
| Core tswj txoj kev | Mos oob khab: SCR voltage tswj, feem ntau yog rau pib / nres tswj. VFD: AC-DC-AC hloov dua siab tshiab, haum rau kev tswj ceev nruam. |
| Tsawg-voltage siab- tswj kev ua haujlwm | RNB5000 nrog PG vector tswj: ceev qhov tseeb txog ± 0.02%, lub sijhawm teb<5 ms. |
| Nruab nrab / siab -voltage efficiency thiab lub zog zoo | RNHV3000: efficiency >98%, power factor >0, 96 tzd<2%. |
| Pump retrofit cov txiaj ntsig | 55 kW rooj plaub: pib tam sim no txo los ntawm 5-7 Ie rau<1.5 Ie; mechanical seal life increased by about 40%–60%. |
Xaus
Hauv cov ntsiab lus yooj yim, asoft starterdaws qhov teeb meem ntawm "pib nyuaj heev," thaum aVFDdaws qhov teeb meem ntawm "kev ceev yuav tsum tau tswj." Rau siab- lub zog thiab kev siv tsis tu ncua ntawm kev lag luam, nruab nrab / siab-voltage drive kev daws teeb meem muab kev txhawb nqa zoo dua rau kev ruaj ntseg, kev saib xyuas, thiab kev ua haujlwm ntev -.
