Vim li cas lub cev muaj zog tsim cov ncej tam sim no?
Tam sim no nyob rau hauv lub cev muaj zog ncej-bearing rooj-puag Circuit Court yog hu ua ncej tam sim no.
Ua rau ntawm ncej tam sim no:
Sib nqus teb asymmetry;
Muaj harmonics nyob rau hauv lub hwj chim mov tam sim no;
Kev tsim khoom tsis zoo thiab kev teeb tsa, ua rau muaj qhov tsis sib xws ntawm huab cua vim rotor eccentricity;
Nws muaj qhov sib txawv ntawm ob lub voj voog ntawm lub detachable stator core;
Tus naj npawb ntawm cov khoom ntawm stator core tsim los ntawm stacking sectors yog qhov tsis tsim nyog.
Kev phom sij: Lub cev muaj zog ntawm qhov chaw lossis cov pob yuav raug eroded thiab taw tes zoo li micropores yuav raug tsim, uas yuav ua rau cov kabmob ua haujlwm tsis zoo, ua rau muaj kev sib txhuam poob thiab kub, thiab thaum kawg ua rau cov kabmob hlawv tawm.
Vim li cas ho tsis siv cov motors dav dav hauv thaj chaw toj siab?
Qhov siab muaj qhov cuam tshuam tsis zoo rau lub cev kub nce, lub cev muaj zog corona (lub cev muaj zog hluav taws xob siab) thiab DC lub cev muaj zog commutation.
Cov nram qab no peb yam yuav tsum tau muab sau tseg:
Qhov siab dua qhov siab, qhov kub nce ntawm lub cev muaj zog ntau dua thiab qhov me me ntawm cov zis hluav taws xob.Txawm li cas los xij, thaum qhov kub thiab txias txo nrog qhov nce ntawm qhov siab txaus kom them nyiaj rau qhov siab ntawm qhov siab ntawm qhov kub nce, qhov ntsuas tso zis hluav taws xob ntawm lub cev muaj zog tuaj yeem tsis hloov pauv;
Kev tiv thaiv kab mob Corona yuav tsum tau ua thaum lub tshuab hluav taws xob siab siv rau ntawm toj siab;
Qhov siab tsis zoo rau DC motor commutation, yog li yuav tsum tau them nyiaj mloog mus rau kev xaiv cov khoom siv roj carbon txhuam.
Vim li cas lub cav yuav tsum tsis ua haujlwm nrog lub teeb load?
Thaum lub cev muaj zog khiav nrog lub teeb load, nws yuav ua rau:
Lub cev muaj zog qhov tseem ceeb yog tsawg;
Lub cev muaj zog efficiency yog tsawg.
Thaum lub cev muaj zog khiav nrog lub teeb load, nws yuav ua rau:
Lub cev muaj zog qhov tseem ceeb yog tsawg;
Lub cev muaj zog efficiency yog tsawg.
Nws yuav ua rau cov khoom siv khib nyiab thiab kev ua haujlwm tsis zoo.
Dab tsi yog qhov ua rau lub cev muaj zog overheating?
Lub load loj dhau lawm;
tsis muaj theem;
Cov pa cua yog thaiv;
Tsawg ceev khiav lub sij hawm ntev dhau lawm;
Lub hwj huam mov harmonics loj heev.
Dab tsi yuav tsum tau ua ua ntej muab lub cev muaj zog uas tsis tau siv rau lub sijhawm ntev?
Ntsuas lub stator, winding theem-rau-theem rwb thaiv tsev tsis kam thiab winding-rau-hauv av rwb thaiv tsev.
Qhov rwb thaiv tsev tsis kam R yuav tsum ua raws li cov qauv hauv qab no:
R＞Un/(1000+P/1000)(MΩ)
Un: ntsuas voltage ntawm lub cev muaj zog winding (V)
P: Lub cev muaj zog (KW)
Rau Un = 380V lub cev muaj zog, R＞ 0.38MΩ.
Yog tias cov rwb thaiv tsev tsis zoo, koj tuaj yeem:
a: Lub cev muaj zog khiav tsis muaj kev thauj khoom rau 2 mus rau 3 teev kom qhuav;
b: Siv cov hluav taws xob qis hluav taws xob hloov pauv tam sim no ntawm 10% ntawm qhov ntsuas hluav taws xob kom dhau mus rau hauv cov winding lossis txuas peb-theem windings hauv series thiab tom qab ntawd ci lawv nrog tam sim no ncaj qha kom cov tam sim no ntawm 50% ntawm cov ntsuas tam sim no;
c: Siv lub kiv cua xa cov cua kub los yog lub tshuab cua sov rau cua sov.
Ntxuav lub cev muaj zog.
Hloov cov kabmob roj.
Vim li cas kuv tsis tuaj yeem pib lub cev muaj zog hauv qhov chaw txias ntawm qhov xav tau?
Yog hais tias lub cev muaj zog nyob rau hauv ib puag ncig uas tsis kub ntev heev, nws yuav:
Lub cev muaj zog rwb thaiv tsev tawg;
Cov kabmob roj khov khov;
Solder hmoov ntawm hlau pob qij txha.
Yog li ntawd, lub cev muaj zog yuav tsum tau ua kom sov thiab khaws cia rau hauv qhov chaw txias, thiab cov windings thiab bearings yuav tsum tau kuaj xyuas ua ntej ua haujlwm.
Dab tsi yog qhov ua rau tsis sib npaug ntawm peb-theem tam sim no hauv lub cev muaj zog?
Peb-theem voltage imbalance;
Ib theem ceg hauv lub cev muaj zog vuam tsis zoo lossis kev sib cuag tsis zoo;
Lub cev muaj zog winding tig-rau-tig luv luv lossis luv luv Circuit Court rau hauv av lossis theem-rau-theem;
Kev ua yuam kev.
Vim li cas ho tsis tuaj yeem 60Hz lub cev muaj zog txuas nrog 50Hz fais fab mov?
Thaum tsim lub cev muaj zog, daim ntawv silicon steel feem ntau yog ua los ua haujlwm nyob rau hauv qhov chaw saturation ntawm qhov nkhaus magnetization.Thaum lub hwj chim mov voltage yog tas li, txo qhov zaus yuav ua rau cov magnetic flux thiab excitation tam sim no, uas ua rau ib tug nce nyob rau hauv lub cev muaj zog tam sim no thiab tooj liab poob, uas thaum kawg ua rau ib tug nce nyob rau hauv lub kub nce ntawm lub cev muaj zog.Hauv qhov xwm txheej hnyav, lub cev muaj zog yuav raug hlawv vim overheating ntawm lub kauj.
Dab tsi yog qhov ua rau lub cev tsis muaj zog?
Fais fab mov:
Kev sib cuag tsis zoo;
Transformer lossis kab tawg;
Lub fuse yog cua tshuab.
Lub cev muaj zog:
Cov screws nyob rau hauv lub cev muaj zog junction box yog xoob thiab kev sib cuag tsis zoo;
Pem hauv ntej welding tsis zoo;
Lub cev muaj zog winding yog tawg.
Dab tsi yog qhov ua rau muaj qhov txawv txav thiab lub suab ntawm cov motors?
Mechanical yam:
Cov kabmob tsis zoo lubrication thiab bearing hnav;
Lub fastening screws yog xoob;
Muaj cov khib nyiab hauv lub cev muaj zog.
Electromagnetic yam:
Lub cev muaj zog overload ua haujlwm;
Peb-theem tam sim no tsis txaus;
tsis muaj theem;
luv Circuit Court txhaum tshwm sim nyob rau hauv stator thiab rotor windings;
Qhov vuam ib feem ntawm lub tawb rotor yog qhib thiab ua rau cov kab tawg.
Dab tsi yuav tsum tau ua ua ntej pib lub cev muaj zog?
Ntsuas cov rwb thaiv tsev tiv thaiv (rau cov tshuab hluav taws xob tsawg, nws yuav tsum tsis pub tsawg dua 0.5MΩ);
Ntsuas cov khoom siv hluav taws xob.Xyuas seb lub tshuab hluav taws xob puas yog qhov tseeb thiab seb lub zog hluav taws xob puas ua tau raws li qhov xav tau;
Xyuas seb cov khoom pib puas yog nyob rau hauv qhov zoo;
Xyuas seb lub fuse puas haum;
Xyuas seb lub cev muaj zog puas yog av thiab xoom kev sib txuas zoo;
Tshawb xyuas qhov kis tau tus mob rau qhov tsis xws luag;
Xyuas seb qhov chaw tsav tsheb puas tsim nyog thiab tshem tawm cov khoom siv hluav taws xob thiab lwm yam khib nyiab.
Dab tsi yog qhov ua rau lub cev muaj zog overheating?
Lub cev muaj zog nws tus kheej:
Sab hauv thiab sab nraud ntawm cov kabmob yog nruj heev;
Muaj teeb meem nrog cov duab thiab txoj hauj lwm kam rau ua ntawm qhov chaw, xws li tsis zoo coaxiality ntawm qhov chaw xws li lub hauv paus tshuab, kawg npog, thiab ncej;
Kev xaiv tsis raug ntawm cov kabmob;
Cov kabmob tsis zoo lubricated lossis cov kabmob tsis huv, thiab muaj cov khib nyiab hauv cov roj;
axis tam sim no.
Kev siv:
Kev teeb tsa tsis raug ntawm chav tsev, xws li coaxiality ntawm lub cev muaj zog ncej thiab lub tshuab tsav tsis ua raws li qhov yuav tsum tau ua;
Lub pulley yog rub nruj heev;
Cov bearings tsis zoo, cov roj tsis txaus lossis lub neej kev pabcuam tau tas sijhawm, thiab cov bearings qhuav thiab deteriorate.
Dab tsi yog vim li cas rau lub cev muaj zog tiv thaiv hluav taws xob tsawg?
Lub winding yog ntub los yog muaj dej nkag;
Plua plav los yog roj accumulates ntawm lub windings;
Rwb thaiv tsev laus;
Lub rwb thaiv tsev ntawm lub cev muaj zog hlau lead lossis thaiv kab hlau rhuav puas.
Post lub sij hawm: Nov-03-2023
