Rotor ntawm lub cev muaj zog induction nrog rau theem rotor: daim ntawv thov hauv tshuab asynchronous

2024 Tus sau: Erin Ralphs | [email protected]. Kawg hloov kho: 2024-02-19 16:10

Ib lub cev muaj zog yog lub tshuab hluav taws xob tsim los hloov hluav taws xob rau hauv lub zog siv tshuab. Cov qauv tsim muaj ntau qhov chaw, tab sis hnub no peb yuav xav txog tsuas yog qhov txav ntawm lub tshuab hluav taws xob - lub rotor.

Rotor tsim

Feem ntau, cov cuab yeej ntawm lub rotor ntawm lub induction lub cev muaj zog zoo li qhov no: lub rotor yog steel ncej, ntawm cov phaj ntawm txias-dov anisotropic hluav taws xob steel yog nias. Lub rotor yog ua los ntawm daim hlau, uas yog cais los ntawm ib leeg los ntawm ib txheej ntawm oxide zaj duab xis. Qhov no yog tsim nyog los txo cov eddy tam sim no uas cuam tshuam rau lub cev muaj zog efficiency.

Hom rotor windings ntawm lub cev muaj zog induction

Tom ntej no, peb yuav tshuaj xyuas ib qho ntxiv. Peb yuav tsum paub seb lub rotor windings ntawm lub induction lub cev muaj zog yog dab tsi, lawv yog dab tsi, ntau yam, tsim nta, nrog rau cov txheej txheem tso. Muaj 2 hom rotor winding: squirrel-cage thiab theem rotor. A squirrel-cage rotor yog ntau dua, nws yog pheej yig dua ua dua ib theem rotor.

Lub cev muaj zog nrog lub rotor xav tau kev saib xyuas tsawg dua nrog lub rotor theem. Cov theem rotor yog siv tsawg zaus, nws yog me ntsis kim dua hauv kev ua tiav, thiab tseem yuav tsum tau saib xyuas ntau zaus vim muaj cov ntiv tes xoo. Tsis tas li ntawd nws yuav paub meej tias vim li cas cov engineers qhia txog qhov kev tsim no. Tam sim no cia peb tham ntau ntxiv txog txhua lub rotor.

Squirrel-cage rotor

Ntawm lub rotor ntawm asynchronous electric motor muaj windings uas tau sau los yog soldered rau hauv grooves. Rau cov tshuab hluav taws xob qis thiab nruab nrab, cov khoom siv winding feem ntau yog txhuas, thiab rau cov muaj zog dua, tooj liab. Qhov no yog tsim nyog los tsim ib tug electromagnet uas yuav, raws li nws yog, ua raws li rotating magnetic flux. Lub rotor yog magnetized nyob rau hauv lub zog ntawm ib tug magnetic teb rotating nyob rau hauv qhov chaw.

Qhov no yog li cas nws hloov tawm tias lub rotor muaj nws tus kheej magnetic teb, uas, raws li nws tau, ua raws li lub rotating magnetic teb nyob rau hauv lub stator. Lub tawb squirrel nyob rau hauv kev sib cuag ncaj qha nrog lub rotor, thiab, zoo li ib tug transformer, ib tug sib nqus teb yog induced rau nws, thiab, raws li, ib tug tej yam electromotive quab yuam. Txawm li cas los xij, qhov voltage yog xoom. Lub rotor tam sim no ntawm lub induction lub cev muaj zog sib txawv nyob ntawm seb lub tshuab load ntawm lub ncej. Qhov siab dua qhov load, qhov siab dua qhov tam sim no ntws hauv rotor windings.

Phase rotor

Qhov tseem ceeb ntawm cov qauv yog txheej txheem zoo li squirrel-cage rotor. Tag nrho cov tib steel ncej, uas daim hlau ntawm hluav taws xob steel nrog grooves yog nias. Ib tug feature ntawm lub rotor ntawm lub asynchronous lub cev muaj zog nrog ib theem rotor yog muaj nyob rau hauv lub grooves ntawm tsis muaj dej nyab los yog soldered winding, tab sis ib tug pa tooj liab winding nteg, raws li nyob rau hauv ib tug stator. Cov windings no yog lub hnub qub txuas nrog.

Ntawd yog, txhua qhov kawg yog nyob rau hauv ib qho twist, thiab qhov seem 3 xaus raug coj tawm mus rau lub nplhaib. Lub rotor theem yog tsim los txwv qhov pib tam sim no. Copper-graphite txhuam yog txuas mus rau lub nplhaib ntiv nplhaib, uas swb tshaj lawv. Tom qab ntawd, cov neeg sib cuag feem ntau raug tshem tawm ntawm cov txhuam hniav mus rau hauv lub thawv muaj npe, qhov chaw pib tam sim no yog tswj los ntawm rheostat lossis cov kua rheostat los ntawm kev hloov qhov tob ntawm immersion ntawm cov electrodes hauv electrolyte.

Raws li twb tau hais lawm, qhov kev ntsuas no tso cai rau koj txwv qhov pib tam sim no. Txhawm rau txo cov txhuam txhuam, cov tshuab hluav taws xob niaj hnub no tau nruab nrog tus qauv tsim, tom qab pib, reclines cov txhuam hniav thiab luv luv-circuits tag nrho windings rau ib leeg. Thaum lub cav nres, cov txhuam hniav rov qab los rau lawv qhov chaw.

Txhim kho cov tsav nrog lub sijhawm rotor

Kev tu lub rotor ntawm lub induction lub cev muaj zog nrog ib theem rotor yog ib qho kev tshuaj xyuas tsis tu ncua ntawm txhuam, ntiv nplhaib ntiv nplhaib, kuaj xyuas tus mob lossis cov kua dej hauv lub rheostat. Nws kuj tseem tsim nyog kuaj xyuas cov immersed electrodes. Raws li cov txiaj ntsig ntawm kev tshuaj xyuas lub rotor ntawm lub asynchronouslub cev muaj zog nrog ib theem rotor, yog tias tsim nyog, cov txhuam hniav yuav tsum tau hloov, tab sis cov kws ua haujlwm tseem ceeb tam sim ntawd hais kom tshem tawm cov hlua khi thiab cov kab noj hniav uas cov rings nyob nrog ib daim ntaub. Txij li thaum lub abrasive yog hluav taws xob conductive, nws tsim kev pheej hmoo ntawm malfunction los yog ib tug luv luv Circuit Court.

Yog tias hnav cov nplhaib, hloov lawv. Yog tias cov nplhaib hnav sai heev, nws txhais tau hais tias cov txhuam hniav siv los ntawm cov khoom tsis raug. Lawv kuj tseem muaj cov plhaub, tab sis lawv tau muab tshem tawm thiab tom qab ntawd grinded nyob rau hauv ob peb lub sij hawm kom qhov chaw nyob ib sab ntawm cov txhuam hniav yog du. Txoj haujlwm no yog ua tiav ntawm lub tshuab dhos kom muaj kev sib dhos.

kev sib hloov ceev

Tus naj npawb ntawm ncej khub teeb tsa lub rotor ceev ntawm lub induction lub cev muaj zog, nws tsis ntau tshaj 3000 ko taw thaum txuas ncaj qha rau peb lub network. Qhov no yog vim lub network zaus ntawm 50 Hz. Nws yog nrog qhov ceev no uas sib nqus flux rotates hauv stator ntawm lub tshuab hluav taws xob. Lub rotor tom qab nws lig me ntsis, uas yog vim li cas lub cev muaj zog asynchronous. Qhov ncua sij hawm yog txiav txim siab raws li txoj cai thiab tau muab cais rau txhua lub cav.

Nrog 1 ncej khub, kev sib hloov ceev ntawm cov hlau nplaum yuav yog 3000 rpm, nrog 2 ncej khub - 1500 rpm, nrog 4 - 750 rpm. Yog tias nws yog qhov tsim nyog los nce lossis kho tus naj npawb ntawm cov kiv puag ncig ib feeb yam tsis muaj kev hloov pauv tseem ceeb, lub tshuab hloov pauv zaus raug teeb tsa hauv qhov tsim. Lub zaus converter tuaj yeem tso tawm ob qho tib si 100 thiab 200 Hz. Txhawm rau nrhiav qhov nrawm, sivformula (6050)/1=3000, qhov twg:

• 1 – tus naj npawb ntawm ncej khub;

• 60 – tas li;

• 50 – zaus;

• 3000 - rotations ib feeb ntawm magnetic teb ntawm ib zaus.

Piv txwv tias peb tuaj yeem kho qhov zaus ntawm qee lub cev muaj zog, thiab nce mus rau 75Hz. Cia peb siv cov mis los nrhiav qhov kev sib hloov ceev: 1/(6075)=4500 rpm. Tam sim no peb tau disassembled qhov tseeb hais tias lub rotor ceev ntawm lub induction lub cev muaj zog tsis nyob ntawm tus rotor nws tus kheej, tab sis nyob ntawm tus naj npawb ntawm ncej khub.

Nyob rau hauv xaus, peb xav hais tias nyob rau hauv lub tsev version, hluav taws xob cov cav tov nrog ib theem rotor yog xyaum tsis pom. Cov tshuab no yog npaj rau kev lag luam siv nyob rau hauv qhov chaw uas voltage dips yog undesirable. Qhov no kuj tseem siv tau rau cov tshuab loj, qhov pib tam sim no tuaj yeem ncav cuag 20 npaug ntawm qhov ntsuas tam sim no. Lub installation ntawm cov tshuab no txhais tau tias txuag cov peev txheej thiab nyiaj txiag thaum lub sijhawm teeb tsa. Kev sib hloov ceev tsis cuam tshuam los ntawm qhov twg rotor nyob rau hauv lub asynchronous lub cev muaj zog: nrog ib theem lossis squirrel-cage rotor.