Lub tshuab hluav taws xob nruab nrab yog cov khoom siv hluav taws xob uas hloov 50Hz AC lub zog rau hauv nruab nrab zaus (300Hz txog 100Hz) lub zog, thiab tom qab ntawd hloov peb-theem AC fais fab rau hauv DC fais fab, thiab tom qab ntawd hloov lub zog DC mus rau qhov hloov tau nruab nrab zaus tam sim no, uas ntws los ntawm capacitors thiab induction coils.Tsim cov kab hluav taws xob sib nqus siab siab, txiav tawm cov khoom siv hlau hauv qhov induction kauj, siv lub hauv paus ntsiab lus ntawm electromagnetic induction los ua kom muaj qhov loj eddy tam sim no ntawm cov khoom hlau, kub cov khoom siv hlau, thiab smelt nws.
Qhov nruab nrab zaus induction rauv yog ib qho kev sib cais system load.Thaum lub sijhawm ua haujlwm, cov kev sib raug zoo tam sim no tau nkag mus rau hauv daim phiaj hluav taws xob, ua rau cov mem tes tam sim no voltage ntawm tus yam ntxwv impedance ntawm daim phiaj hluav taws xob, ua rau muaj kev hloov pauv ntawm cov hluav taws xob hauv kab hluav taws xob, thiab cuam tshuam rau cov khoom siv hluav taws xob zoo thiab kev nyab xeeb ntawm cov khoom siv. .Txij li thaum lub lag luam fais fab mov ntawm nruab nrab zaus rauv los ua ib tug nruab nrab zaus los ntawm lub rectification zaus converter, lub hwj chim daim phiaj yuav tsim ib tug loj tus naj npawb ntawm cov teeb meem high-order harmonics thaum lub sij hawm ua hauj lwm, uas yog ib tug ntawm cov loj tshaj plaws kev txiav txim siab harmonic qhov chaw nyob rau hauv lub daim phiaj load.
Tsib yam ntxwv ntawm nruab nrab zaus rauv
1. Txuag nyiaj
Cov cua kub ceev dua, kev tsim khoom siab, tsis tshua muaj cua oxidation carburization, txuag cov ntaub ntawv raw thiab cov nqi, thiab ua kom lub neej ntev ntawm cov cuab yeej siv abrasive.
Vim tias lub hauv paus ntsiab lus ntawm qhov nruab nrab zaus induction rauv yog electromagnetic, cov cua sov tsim los ntawm qhov nruab nrab zaus induction rauv yog tsim los ntawm cov hlau nws tus kheej.Cov neeg ua haujlwm ib txwm tuaj yeem ua haujlwm tas li ntawm kev ua haujlwm forging tsis pub dhau kaum feeb tom qab siv qhov nruab nrab zaus induction rauv, yam tsis tas yuav tsum muaj lub tshuab tsim hluav taws xob.Cov neeg ua haujlwm tau pib lub tshuab hluav taws xob tua hluav taws thiab kev sib khi ua ntej.Vim tias txoj kev cua sov no ua kom sov sai dua thiab muaj oxidation tsawg dua, oxidation ablation ntawm nruab nrab zaus cua sov steel castings tsuas yog 0.5%, oxidation ablation ntawm cov cua kub cua sov yog 2%, thiab cov thee raw cov cua sov tshaj 3%.Qhov nruab nrab zaus cua sov txheej txheem txuag cov ntaub ntawv raw, piv nrog cov thee thee rauv, ib tuj ntawm cov hlau castings txuag 20-50KG stainless hlau daim hlau.Nws cov khoom siv raw khoom tuaj yeem ncav cuag 95%.Vim tias cov cua kub tsis sib xws thiab qhov kub ntawm qhov sib txawv ntawm qhov tseem ceeb ntawm qhov chaw me me, lub neej kev pab cuam ntawm lub forging tuag yog zoo heev thaum lub sij hawm forging.Lub forging roughness yog qis dua 50um, thiab kev siv tshuab yog txuag hluav taws xob.Qhov nruab nrab zaus cua sov tuaj yeem txuag hluav taws xob los ntawm 31.5% -54.3% piv nrog cov roj cua sov, thiab cov roj cua kub txuag hluav taws xob txuag 5% -40%.Cov cua kub zoo yog qhov zoo, qhov seem seem tuaj yeem raug txo los ntawm 1.5%, qhov tso zis tuaj yeem nce los ntawm 10% -30%, thiab lub neej kev pabcuam ntawm cov cuab yeej abrasive tuaj yeem txuas ntxiv los ntawm 10% -15%.
2. Cov ntsiab lus tiv thaiv ib puag ncig
Ib puag ncig zoo hauv chaw ua haujlwm, txhim kho lub chaw ua haujlwm ib puag ncig ntawm cov neeg ua haujlwm thiab cov tuam txhab cov duab, tsis muaj kuab lom, txuag hluav taws xob.
Piv nrog cov thee qhov cub, induction cua sov rauv tsis tuaj yeem haus luam yeeb los ntawm cov qhov cub hluav taws xob hauv qab cua sov, uas tuaj yeem ua tau raws li cov cai ntawm Lub Chaw Tiv Thaiv Ib puag ncig.Tsis tas li ntawd, nws tuaj yeem tsim cov duab sab nraud ntawm lub tuam txhab thiab forge kev lag luam txoj kev loj hlob ntawm kev tsim kev lag luam.Induction cua sov yog cua sov ntawm hluav taws xob rauv hluav taws xob los ntawm chav tsev kub txog 100 ° C, lub zog noj tsawg dua 30 ° C, thiab kev siv cov forgings tsawg dua 30 ° C.Partition txoj kev ntawm forging noj
3. Cua sov txiv hmab txiv ntoo
Cov cua kub tsis sib xws, qhov sib txawv me me ntawm cov tub ntxhais thiab qhov chaw, qhov kub thiab txias tswj qhov tseeb
Induction cua sov ua kom sov nyob rau hauv cov hlau nws tus kheej, yog li cov cua sov yog txawm thiab qhov kub ntawm qhov sib txawv ntawm cov tub ntxhais thiab qhov chaw me me.Daim ntawv thov kev tswj qhov kub thiab txias tuaj yeem tswj qhov kub thiab txias, txhim kho cov khoom zoo thiab dhau tus nqi.
4. Tus nqi
Lub tshuab hluav taws xob nruab nrab ntawm qhov hluav taws xob ua kom sov sai dua, lub tshuab hluav taws xob melting tsuas yog siv hluav taws xob hluav taws xob tsis tshaj 500 degrees, thiab melting ntau dua thiab sai.
5. Kev nyab xeeb kev ua haujlwm
Cov chaw taws teeb saib xyuas qhov nruab nrab zaus hluav taws xob rauv hluav taws xob raug xaiv, uas tsim nyog rau kev tsim khoom ib puag ncig.Muaj zog tiv thaiv kev cuam tshuam muaj peev xwm thiab muaj kev nyab xeeb siab.Tsis muaj cov xaim txuas ntawm cov cuab yeej ua haujlwm thiab cov cuab yeej tswj tau, uas yog, cov chaw taws teeb tswj.Rau txhua qhov kev ua haujlwm nyuaj, nias cov yuam sij ntawm cov chaw taws teeb tswj los ntawm qhov deb.Tom qab tau txais cov lus qhia, qhov nruab nrab zaus hluav taws xob rauv hluav taws xob tuaj yeem ua tiav cov haujlwm ua haujlwm ib kauj ruam raws li cov txheej txheem zoo.Vim tias lub tshuab hluav taws xob hluav taws xob yog cov khoom siv hluav taws xob siab, nws tsis yog tsuas yog muaj kev nyab xeeb dua, tab sis kuj tuaj yeem zam kev puas tsuaj rau lub tshuab hluav taws xob vim muaj kev ntshai los ntawm kev ua haujlwm yuam kev.
Vim li cas qhov nruab nrab zaus qhov cub ua kom muaj kev sib haum xeeb
Harmonics yuav ua rau muaj kev phom sij loj rau kev ua haujlwm nyab xeeb ntawm daim phiaj hluav taws xob.Piv txwv li, kev sib haum xeeb tam sim no yuav ua rau muaj kev sib tw ntau zaus vortex hlau poob hauv lub transformer, uas yuav ua rau lub transformer overheat, txo qhov tso zis ntim ntawm lub transformer, ua rau lub suab nrov ntawm lub transformer, thiab ua rau muaj kev phom sij rau lub neej ntawm transformer. .Cov nyhuv sticking ntawm harmonic tam sim no txo qhov ntu ntu ntawm tus neeg xyuas pib thiab ua rau kom poob ntawm txoj kab.Harmonic voltage cuam tshuam rau kev ua haujlwm ib txwm muaj ntawm lwm yam khoom siv hluav taws xob ntawm daim phiaj, ua rau kev ua haujlwm tsis raug ntawm cov cuab yeej tswj tsis siv neeg thiab ntsuas ntsuas tsis raug.Harmonic voltage thiab tam sim no cuam tshuam rau kev ua haujlwm ntawm cov khoom siv sib txuas lus peripheral;transient overvoltage thiab transient overvoltage tshwm sim los ntawm harmonics puas lub rwb thaiv tsev txheej ntawm machinery thiab khoom, ua rau peb-theem luv-circuit faults thiab kev puas tsuaj rau transformers;harmonic voltage thiab tus nqi ntawm cov tam sim no yuav ua rau ib nrab series resonance thiab parallel resonance nyob rau hauv pej xeem lub hwj chim daim phiaj, uas ua rau muaj xwm txheej loj.Nyob rau hauv tag nrho cov txheej txheem ntawm inverter fais fab mov, thawj DC stabilized fais fab mov yog ib tug square yoj hloov fais fab mov, uas yog sib npaug rau cov sine waves txuam nrog ntau high-order mem tes tam sim no.Txawm hais tias tom qab-theem Circuit Court xav tau lub lim, cov harmonics tsis tuaj yeem raug lim tawm tag nrho, uas yog qhov ua rau muaj kev sib haum xeeb.
Harmonic zog ntawm nruab nrab zaus rauv
Lub zog tso zis ntawm qhov nruab nrab zaus induction rauv yog txawv, thiab cov txheeb ze sib haum xeeb kuj txawv:
1. Lub ntuj lub zog ntawm lub tshuab hluav taws xob nruab nrab ntawm lub tshuab hluav taws xob yog nruab nrab ntawm 0.8 thiab 0.85, lub zog reactive xav tau loj, thiab cov ntsiab lus sib haum xeeb yog siab.
2. Lub ntuj lub zog ntawm lub tshuab hluav taws xob qis nruab nrab ntawm qhov hluav taws xob yog nruab nrab ntawm 0.88 thiab 0.92, thiab lub zog reactive xav tau me me, tab sis cov ntsiab lus sib haum xeeb yog siab heev.
3. Lub net side harmonics ntawm qhov nruab nrab zaus rauv yog feem ntau 5th, 7th thiab 11th.
Harmonic tswj txoj kev ntawm nruab nrab zaus rauv
Ib leeg-tuned lim ntawm 5, 7, 11 thiab 13 zaug tau tsim.Ua ntej lim nyiaj them, lub zog ntawm tus neeg siv khoom qhov nruab nrab zaus induction rauv melting txuas yog 0.91.Tom qab cov khoom siv lim dej raug muab tso rau hauv kev ua haujlwm, qhov nyiaj them siab tshaj plaws yog 0.98 capacitive.Tom qab cov khoom siv lim dej raug muab tso rau hauv kev ua haujlwm, tag nrho cov kev khiav hauj lwm voltage distortion tus nqi (tag nrho cov harmonic distortion tus nqi) yog 2.02%.Raws li lub zog zoo tus qauv GB / GB / T 14549-1993, qhov ua haujlwm voltage harmonic (10KV) tus nqi qis dua 4.0%.Tom qab ua cov ntxaij lim dej ntawm 5th, 7th, 11th thiab 13th harmonic tam sim no, lub lim tus nqi yog li 82∽84%, uas tshaj tus nqi tswj ntawm peb lub tuam txhab kev lag luam tus qauv.Filter nyhuv yog qhov zoo.
Lub sij hawm xa tuaj: Plaub Hlis-13-2023