Roj Immersed Transformer Basic Taw Qhia

1.1 Kev txhais

Distribution transformer, hu ua "distribution transformer", yog hais txog cov khoom siv hluav taws xob zoo li qub uas hloov AC voltage thiab tam sim no raws li txoj cai ntawm electromagnetic induction thiab xa AC fais fab hauv lub zog faib hluav taws xob. Hauv qee qhov chaw, lub zog hloov hluav taws xob uas muaj qhov hluav taws xob qis dua 35 kV (feem ntau 10KV thiab qis dua) yog hu ua "distribution transformers" luv luv. Qhov chaw thiab qhov chaw uas lub "distribution transformer" raug teeb tsa yog lub substation. Kev faib tawm transformers yuav tsum tau ntsia rau ntawm ncej lossis hauv av hauv qhov qhib.

1.2 Qauv

Raws li nws cov qauv, roj immersed transformer yuav muab faib ua lub cev, roj conservator, insulating bushing, kais changer, tiv thaiv ntaus ntawv, thiab lwm yam.

1.2.1 Ontology Cov

Lub cev muaj peb yam: hlau core, winding thiab insulating roj. Lub winding yog lub voj voog ntawm lub transformer, thiab cov tub ntxhais hlau yog qhov sib nqus ntawm lub transformer. Qhov ob tsim lub hauv paus ntawm lub transformer, uas yog, electromagnetic ib feem.

1.2.1.1 Core

Cov tub ntxhais yog lub ntsiab sib nqus Circuit Court ib feem ntawm lub transformer. Nws feem ntau yog ua los ntawm cov ntaub ntawv kub-kuav los yog txias-kuav los tiag silicon steel nplooj ntawv uas muaj cov ntsiab lus silicon siab, ib lub thickness ntawm 0.35 los yog 0.5mm, thiab ib tug insulating xim rau saum npoo. Cov tub ntxhais kawm tau muab faib ua ob ntu: lub hauv paus tseem ceeb thiab tus quab hlau. Lub hauv paus tseem ceeb yog them nrog windings. Lub yoke hlau yog siv los kaw qhov sib nqus Circuit Court. Muaj ob hom qauv ntawm cov qauv tseem ceeb: core hom thiab plhaub hom.

1.2.1.2 Cuab Yeej

Lub winding yog ib feem ntawm lub transformer, uas feem ntau yog mob ntawm ib tug winding pwm nrog insulated ca tooj liab hlau los yog round tooj liab hlau. Lub winding yog teem rau ntawm transformer core kem, lub low-voltage winding yog nyob rau hauv lub puab txheej, high-voltage winding yog teem rau txheej txheej ntawm lub low-voltage winding, thiab lub tes tsho ua los ntawm cov ntaub ntawv insulating yog siv los cais. qhov tsawg-voltage winding thiab cov tub ntxhais hlau, thiab cov high-voltage winding thiab low-voltage winding. rau rwb thaiv tsev.

1.2.1.3 Insulating roj

Cov muaj pes tsawg leeg ntawm cov roj immersed transformer roj yog qhov nyuaj heev, feem ntau yog tsim los ntawm naphthenes, alkanes thiab aromatic hydrocarbons. Transformer roj plays ob lub luag haujlwm hauv kev faib cov khoom siv hluav taws xob: ib qho yog los tiv thaiv kev hloov pauv ntawm cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov cores thiab cov roj tso tsheb hlau luam. Qhov thib ob yog tias cov roj transformer tsim cov convection tom qab rhuab, uas ua raws li lub tshav kub dab dej rau lub transformer core thiab windings. Feem ntau siv cov roj transformer muaj peb qhov tshwj xeeb: No. 10, No. 25 thiab No. 45. Daim ntawv lo qhia txog qhov kub thiab txias thaum cov roj pib solidify hauv qab xoom. Piv txwv li, "No. 25" roj txhais tau hais tias cov roj pib solidify ntawm rho tawm 25 degree . Cov roj specifications yuav tsum raug xaiv raws li kev nyab xeeb hauv zos.

1.2.2 Roj conservator

Cov roj conservator yog mounted rau saum lub hau ntawm lub tank roj. Lub ntim ntawm cov roj conservator yog hais txog 10 feem pua ​​​​ntawm cov ntim ntawm cov roj tank. Muaj kev sib txuas ntawm cov yeeb nkab ntawm cov roj conservator thiab cov roj tank. Thaum lub ntim ntawm cov roj immersed transformer expands los yog shrinks raws li qhov kub ntawm cov roj hloov, cov roj conservator plays lub luag hauj lwm ntawm khaws cia thiab replenishing roj, xyuas kom meej tias cov hlau core thiab windings yog immersed nyob rau hauv cov roj; Kev sib cuag nrog huab cua txo tus nqi ntawm cov roj deterioration.

Muaj cov cim roj nyob rau sab ntawm cov roj khaws cia, thiab ntawm ib sab ntawm lub iav raj, muaj cov kab qauv rau cov roj theem ntawm -30 degree, ntxiv rau 20 degree thiab ntxiv rau 40 degree, qhia cov roj theem uas lub transformer uas tsis ua haujlwm yuav tsum ncav cuag; tus qauv Cov kab tuaj yeem cuam tshuam txog seb cov roj ntau puas txaus thaum lub tshuab hloov pauv ua haujlwm ntawm qhov kub sib txawv.

Cov roj conservator yog nruab nrog lub qhov ua pa, kom qhov chaw sab saud ntawm cov roj conservator sib txuas lus nrog cov cua. Thaum cov roj transformer nthuav dav nrog cua sov thiab cog lus nrog txias, huab cua nyob rau sab saud ntawm cov roj conservator tuaj yeem nkag mus rau hauv thiab tawm los ntawm lub qhov ua pa, thiab cov roj theem tuaj yeem nce lossis poob, tiv thaiv cov roj tank los ntawm deformed lossis txawm. puas lawm.

1.2.3 rwb thaiv tsev bushing

Nws yog lub ntsiab insulating ntaus ntawv sab nraum lub thawv transformer, thiab feem ntau ntawm cov transformer insulating bushings yog ua los ntawm porcelain insulating bushings. Lub transformer coj cov hlau lead ntawm lub transformer siab thiab qis voltage windings los ntawm sab hauv ntawm cov roj tank mus rau sab nraud ntawm lub roj tank los ntawm lub siab thiab tsis tshua muaj voltage insulating bushings, thiaj li hais tias lub transformer winding yog insulated los ntawm hauv av (plhaub thiab core), thiab nws kuj yog ib feem tseem ceeb ntawm kev sib txuas ntawm cov hlau lead ruaj khov thiab cov hluav taws xob sab nraud. Lub high-voltage plooj (porcelain bushing) yog qhov siab siab, thiab qhov qis-voltage porcelain bushing yog luv luv.

1.2.4 Taub

Cov cuab yeej rau kev hloov cov kais dej ntawm high-voltage winding ntawm lub transformer thiab kho cov kais dej txoj hauj lwm yuav nce los yog txo tus naj npawb ntawm lem ntawm thawj winding los hloov qhov voltage piv thiab kho cov zis voltage. Tom qab cov roj immersed transformer tsis ua hauj lwm thiab disconnected los ntawm daim phiaj, tus txheej txheem ntawm manually hloov txoj hauj lwm ntawm tus kais changer los kho cov zis voltage yog hu ua tsis muaj-load voltage regulation.

1.2.5 Kev tiv thaiv ntaus ntawv

1.2.5.1 Gas relay

Cov roj relay yog ntsia nruab nrab ntawm lub transformer roj tank thiab cov yeeb nkab txuas ntawm cov roj conservator, thiab txuas nrog cov tswj Circuit Court los tsim cov khoom tiv thaiv roj. Kev sib cuag sab saud ntawm cov roj relay thiab lub teeb hluav taws xob hluav taws xob tsim hluav taws xob sib cais, thiab qis qis ntawm cov roj relay txuas nrog rau ib qho hluav taws xob sab nraud los tsim kev tiv thaiv roj hnyav. Cov roj hnyav ua haujlwm tawm mus rau lub zog hluav taws xob hluav taws xob hluav taws xob thiab xa cov teeb liab ua haujlwm hnyav;

1.2.5.2 Anti-riot yeeb nkab

Anti-riot tube yog ib hom kev tiv thaiv kev nyab xeeb rau transformers. Nws yog ntsia rau sab saum toj ntawm lub transformer npog. Lub raj tiv thaiv kev kub ntxhov yog txuas nrog cov cua. Thaum muaj teeb meem tshwm sim, lub tshav kub yuav vaporize cov roj transformer, uas yuav ua rau cov roj relay xa lub tswb ceeb toom los yog txiav tawm lub hwj chim los tiv thaiv cov roj tank los ntawm tawg.