Distribution Fais Fab Transformer Basic Knowledge
Nyob rau hauv cov txheej txheem ntawm kev xa hluav taws xob, kev hloov pauv thiab kev faib tawm hauv lub zog hluav taws xob, kev faib hluav taws xob hloov hluav taws xob yog cov khoom siv hluav taws xob tseem ceeb. Txawm hais tias nws yog ib qho kev lag luam, khw muag khoom, lub tsev ua haujlwm, lossis thaj chaw nyob, transformers tuaj yeem pom txhua qhov chaw.
1. Lub hauv paus ntsiab lus ntawm kev faib hluav taws xob transformer
Transformer yog ib qho cuab yeej siv lub hauv paus ntsiab lus ntawm electromagnetic induction los hloov AC voltage thiab tam sim no. Lub ntsiab Cheebtsam yog thawj kauj, theem nrab coil thiab hlau core (magnetic core).
2. Lub luag haujlwm ntawm kev faib hluav taws xob transformer
Variable voltage: nce lossis txo qhov voltage, thiab hloov cov hluav taws xob uas tsim los ntawm lub tshuab hluav taws xob mus rau theem voltage rau kev siv nyob hauv tsev lossis kev lag luam los ntawm cov txheej txheem ntawm kev txhawb nqa, thauj, thiab nqis.
Kev hloov pauv tam sim no: hloov qhov loj ntawm qhov tam sim no thaum hloov qhov voltage
Kev rho tawm: cais cov neeg siv khoom thiab lub zog siv hluav taws xob kom txo tau qhov kev sib tsoo.
3. Dab tsi yog hom kev faib hluav taws xob transformer?
Raws li txoj kev ua kom txias:
A. Roj immersed tis transformer: ib tug transformer uas siv cov roj transformer raws li qhov nruab nrab insulating thiab txias nruab nrab, thiab cov tub ntxhais hlau thiab coil yog tag nrho rau hauv cov roj insulating.
B. Qhuav hom faib transformer: cov tub ntxhais hlau thiab coil yog cam khwb cia nrog epoxy resin khoom ua si lub luag hauj lwm insulating.
Raws li tus naj npawb ntawm lub zog theem, nws tuaj yeem muab faib ua ib-theem transformers thiab peb-theem transformers.
A. Cov yam ntxwv ua haujlwm ntawm ib theem faib transformers
Ib-theem transformer yog ib qho transformer uas nws thawj winding yog ib-theem winding. Raws li pom nyob rau hauv daim duab, ob qho tib si thawj winding thiab theem nrab winding ntawm ib-theem transformer yog qhov txhab ntawm cov tub ntxhais hlau, thawj winding yog AC voltage input davhlau ya nyob twg, thiab lub thib ob winding yog AC voltage output davhlau ya nyob twg. Cov zis voltage ntawm qhov thib ob winding yog proportional rau tus naj npawb ntawm lem ntawm lub kauj.
Tib theem faib transformers tuaj yeem hloov cov khoom siv hluav taws xob siab rau hauv ib-theem qis-voltage rau siv ntau yam khoom siv. Piv txwv li, AC 6600V high-voltage tuaj yeem hloov mus rau AC 220V low-voltage los ntawm ib theem faib transformer los muab lub zog rau lub teeb lossis lwm yam khoom siv. Ib-theem transformers muaj qhov zoo ntawm cov qauv yooj yim, me me, thiab qhov poob qis, thiab tsim nyog siv rau hauv cov kab hluav taws xob tsawg (qis dua 60Hz) nrog cov khoom me me.
Ib-theem transformers feem ntau yog siv nyob rau hauv cov cheeb tsam ntawm lub hwj chim kis tau tus mob thiab tis systems, raws li zoo raws li nyob rau hauv lub hwj chim mov ntawm ib co teeb pom kev zoo los yog me me motors, thiab lawv daim ntawv thov piv txwv yog qhia nyob rau hauv daim duab. Tsis tas li ntawd, nws tseem tuaj yeem siv los ua lub zog hloov pauv hauv ntau yam khoom siv hluav taws xob thiab hluav taws xob.
B. Cov yam ntxwv ua haujlwm ntawm peb theem transformers
Peb theem transformer yog ib hom kev hloov pauv uas tau siv dav hauv cov khoom siv fais fab. Peb theem transformer tiag tiag yog kev sib xyaw ntawm peb theem ib zaug transformers ntawm tib lub peev xwm, thawj winding (high-voltage coil) yog peb-theem, thiab theem nrab winding (low-voltage coil) kuj yog peb-theem.
Peb-theem transformers feem ntau yog siv rau kev nce qib lossis nce qib hauv peb-theem fais fab mov system. Nws yog feem ntau siv los hloov lub siab voltage ntawm ob peb txhiab volts rau hauv qhov tsis tshua muaj hluav taws xob ntawm 380V los muab lub zog rau cov khoom siv hluav taws xob.
Peb theem transformers muaj ntau yam kev siv, xws li substations, industrial thiab mining enterprises, kev tsim kho qhov chaw, ntws thiab irrigation khoom, post thiab telecommunications, textiles, railways, tsev kawm ntawv, tsev kho mob, lub teb chaws tiv thaiv, elevator, thiab lwm yam., thiab kuj yog haum rau qee qhov hluav taws xob hluav taws xob qis hluav taws xob uas muaj qhov hloov pauv loj thiab qis. nyob rau hauv txoj kab kev faib khoom.
7. Dab tsi yog cov khoom ntawm lub transformer muaj li ntawm?
A. Lub cev tseem ceeb: suav nrog cov tub ntxhais hlau, winding, kev txhawb nqa rwb thaiv tsev
B. Voltage regulating device: kais changer, (on-load voltage regulating device thiab non-excitation voltage regulating device)
C. Roj tank thiab daim ntawv radiator (tis), bushing
D. Cov khoom siv kev nyab xeeb: noo noo absorber, roj relay, roj lim tsev thiab ntsuas ntsuas kub, thiab lwm yam.
8. Kev siv cov roj transformer yog dab tsi
(1) Rwb thaiv tsev muaj nuj nqi: Transformer roj muaj zog rwb thaiv tsev kev ua tau zoo, uas yuav tsim kom muaj zog rwb thaiv tsev txaus ntawm winding thiab lub plhaub. Feem ntau hom yog DB25 thiab DB45.
(2) Thaum tshav kub kub dissipation nyhuv: Transformer roj ib txwm circulates ntawm lub cev thiab daim ntawv radiator raws li lub hauv paus ntsiab lus ntawm cua sov, thiab dissipates tshav kub los ntawm lub radiator kom qhov kub ntawm lub kauj los ntawm siab dhau heev lawm.
(3) Arc suppression muaj nuj nqi: Thaum lub teeb tsa hluav taws xob tswj hluav taws xob ua haujlwm, lub teeb arc yuav raug tsim thaum lub kais hloov pauv qhib, thiab cov roj hloov pauv tuaj yeem tua lub teeb arc los ua lub luag haujlwm tiv thaiv.
9. Lub luag hauj lwm ntawm cov roj conservator (roj conservator)
Cov roj conservator (roj conservator) yog ntsia obliquely saum lub tank roj, thiab muaj cov roj yeeb nkab sib txuas nrog cov roj tank. Thaum lub ntim ntawm cov roj transformer nthuav dav thiab shrinks nrog kev hloov ntawm cov roj kub, cov roj conservator plays lub luag hauj lwm ntawm cov roj cia thiab roj replenishment. Tiv thaiv cov roj thiab huab cua los ntawm oxidized thiab damp. Muaj cov roj theem raj ntawm cov roj hauv ncoo, thiab qee qhov kuj tseem muaj cov kua ntsuas ntsuas ntsuas ntsuas ntsuas qhov hloov ntawm qib roj.
10. Dab tsi yog qhov kev cai ntawm kev thauj khoom?
On-load voltage regulation yog ib tug voltage regulation txoj kev nyob rau hauv uas lub transformer yuav hloov lub voltage los ntawm kev hloov tus kais txoj hauj lwm thaum nws khiav nrog load.
11. Dab tsi yog qhov poob ntawm lub transformer thaum ua haujlwm
Transformer poob muaj xws li: tsis muaj-load poob (hlau poob): qhov poob los ntawm eddy tam sim no ntawm cov tub ntxhais hlau,
Load poob (tooj liab poob): Qhov poob los ntawm kev tiv thaiv cua sov ntawm lub winding.
12. Dab tsi yog lub luag haujlwm ntawm lub nqus dej noo (lub tshuab ua pa)?
A. Txij li thaum qhov kub ntawm lub transformer yuav hloov txhua lub sij hawm thaum lub sij hawm ua hauj lwm, cov roj theem nyob rau hauv lub transformer yuav nce los yog poob, thiab cov roj yuav tsum tau tawm, txwv tsis pub lub siab yuav nce; nws tuaj yeem nkag siab tias yog cov txheej txheem ua pa, uas tiv thaiv cov roj thiab Cov nyhuv ntawm kev sib cuag ntawm huab cua ncaj qha.
B. Nruab ib lub tank silica gel rau ntawm cov roj exhalation channel, lub transformer ua pa los ntawm silica gel, thiab cov dej ntws tawm yog absorbed. Thaum cov dej nce mus txog ib theem, cov xim ntawm silica gel yuav hloov ntawm xiav mus rau liab. Lub sijhawm no, silica gel yuav tsum tau hloov.
13. Gas relay yog dab tsi? Lub luag haujlwm yog dab tsi?
Gas relay (tseem hu ua roj relay) yog cov cuab yeej tiv thaiv uas siv hauv cov khoom siv hluav taws xob. Nws yog ntsia nruab nrab ntawm cov roj conservator ntawm lub transformer thiab cov kav dej ntawm cov roj tank. Thaum qhov kev txhaum sab hauv ntawm lub transformer yog siv los decompose cov roj los tsim cov roj los yog ua rau cov roj ntws, ua kom muaj kev sib cuag ntawm cov roj relay ua, thiab xa cov teeb liab "heavy gas" thiab lub tswb "gas" rau lub tswb. Cov neeg ua haujlwm hauv lub luag haujlwm los ntawm kev sib txuas hauv hluav taws xob ib txwm ua kom nco ntsoov lub tshuab hloov pauv tias nws txawv txav lossis ua haujlwm tsis raug.
