Umahluko phakathi kweentlobo ezahlukeneyo zeenjini

1. Umahluko phakathi kweenjini ze-DC kunye ne-AC

Idayagram yesakhiwo semoto ye-DC

I-AC motor structure diagram

Iinjini ze-DC zisebenzisa umsinga othe ngqo njengomthombo wamandla azo, ngelixa iinjini ze-AC zisebenzisa umsinga otshintshanayo njengomthombo wamandla azo.

Ngokwesakhiwo, umgaqo weemoto ze-DC ulula, kodwa isakhiwo sinzima kwaye akukho lula ukusigcina. Umgaqo weenjini ze-AC unzima kodwa isakhiwo silula, kwaye kulula ukuyigcina kuneenjini ze-DC.

Ngokwexabiso, iinjini zeDC ezinamandla afanayo ziphezulu kuneenjini ze-AC. Kubandakanya isixhobo sokulawula isantya, ixabiso le-DC liphezulu kunelo le-AC. Kakade ke, kukwakho umahluko omkhulu kwisakhiwo kunye nokugcinwa.
Ngokubhekiselele ekusebenzeni, kuba isantya seenjini ze-DC zizinzile kwaye ulawulo lwesantya luchanekile, olungafezekiyo ngeenjini ze-AC, iinjini ze-DC kufuneka zisetyenziswe endaweni yeenjini ze-AC phantsi kweemfuno ezingqongqo zesantya.
Ukulawulwa kwesantya seenjini ze-AC kunzima, kodwa kusetyenziswe kakhulu kuba izityalo zemichiza zisebenzisa amandla e-AC.

2. Umahluko phakathi kwe-synchronous kunye ne-asynchronous motors

Ukuba i-rotor ijikeleza ngesantya esifanayo ne-stator, ibizwa ngokuba yi-synchronous motor. Ukuba azifani, ibizwa ngokuba yi-asynchronous motor.

3. Umahluko phakathi kweenjini eziqhelekileyo kunye neziguquguqukayo

Okokuqala, iinjini eziqhelekileyo azinakusetyenziswa njengeenjini eziguquguqukayo. Iinjini eziqhelekileyo ziyilwe ngokuhambelana rhoqo kunye ne-voltage engaguqukiyo, kwaye akunakwenzeka ukuziqhelanisa ngokupheleleyo neemfuno zolawulo lwesantya sokuguqula isantya, ngoko ke azinakusetyenziswa njengeenjini eziguquguqukayo.
Ifuthe labaguquli befrikhwensi kwiimotor ikakhulu ekusebenzeni ngokufanelekileyo kunye nokunyuka kobushushu beenjini.
Isiguquli se-frequency sinokuvelisa amanqanaba ahlukeneyo ombane we-harmonic kunye nangoku ngexesha lokusebenza, ukwenzela ukuba i-motor iqhube phantsi kwe-voltage engeyiyo-sinusoidal kunye yangoku. I-harmonics ephezulu kuyo iya kubangela ukulahleka kobhedu kwe-motor stator, ukulahleka kobhedu kwe-rotor, ukulahleka kwentsimbi kunye nokulahlekelwa okongeziweyo ukwandisa.
Eyona nto ibalulekileyo kwezi yilahleko yethusi ye-rotor. Ezi lahleko ziya kubangela ukuba injini ivelise ubushushu obongezelelweyo, inciphise ukusebenza kakuhle, inciphise amandla aphumayo, kwaye ukunyuka kwamaqondo obushushu eenjini eziqhelekileyo kuya kunyuka nge-10% ukuya kuma-20%.
I-frequency converter frequency frequency ranges ukusuka kwi-kilohertz ezininzi ukuya ngaphezulu kwe-10 kilohertz, eyenza ukuba i-stator winding ye-motor imelane nesantya esiphezulu kakhulu sokunyuka kwe-voltage, elilingana nokusetyenziswa kombane onyukayo kakhulu kwi-motor, ukwenza ukujika kwe-inter-turn. ukugquma kwenjini ukumelana novavanyo oluqatha.
Xa iimotor eziqhelekileyo zinikwa amandla ngabaguquli bamaza, ukungcangcazela kunye nengxolo ebangelwa ngumbane, oomatshini, ukungena komoya kunye nezinye izinto ziya kuba nzima ngakumbi.
I-harmonics equlethwe kumbane oguquguqukayo oguquguqukayo uphazamisana ne-harmonics yendawo yendalo yenxalenye ye-electromagnetic yemoto, zenza amandla ahlukeneyo e-electromagnetic excitation, ngaloo ndlela yonyusa ingxolo.
Ngenxa yoluhlu olubanzi lokusebenza kwamaza ombane kunye noluhlu olukhulu lokutshintsha kwesantya, ukujikeleza kwamaza ahlukeneyo ombane we-electromagnetic kunzima ukunqanda i-vibration frequencies yeendawo ezahlukeneyo zolwakhiwo lwemoto.
Xa i-frequency yonikezelo lwamandla iphantsi, ilahleko ebangelwa yi-harmonics ye-high-order kunikezelo lwamandla inkulu; okwesibini, xa isantya semoto eguquguqukayo sincitshiswa, umthamo womoya wokupholisa uyancipha ngokuthe ngqo kwityhubhu yesantya, okukhokelela ekubeni ubushushu bemoto bungatshatyalaliswa, ukunyuka kobushushu kunyuka kakhulu, kwaye kunzima ukufezekisa. imveliso torque rhoqo.

4. Umahluko wesakhiwo phakathi kweenjini eziqhelekileyo kunye neenjini ezijikelezayo

01. Iimfuno zomgangatho ophezulu wokugquma
Ngokubanzi, inqanaba le-insulation yee-motor frequency frequency ngu-F okanye ngaphezulu. Ukufakwa phantsi komhlaba kunye nokuqina kombane wokujika kocingo kufuneka kuqiniswe, kwaye ukukwazi ukugquma ukumelana nombane we-impulse kufuneka kuqwalaselwe ngokukodwa.
02. Iimfuno zokungcangcazela okuphezulu kunye nengxolo yeemotor frequency frequency
Iimotor eziguquguqukayo eziphindaphindwayo kufuneka zithathele ingqalelo ngokupheleleyo ubungqongqo bamacandelo eemoto kunye nawo wonke, kwaye zizame ukonyusa amaza azo endalo ukunqanda ukuphinda-phinda ngamandla ngamaza amandla.
03. Iindlela zokupholisa ezahlukeneyo zeemotor frequency frequency
Iimotor eziguquguqukayo eziqhelekileyo zisebenzisa ukupholisa umoya ngenkani, oko kukuthi, eyona fan yokupholisa imoto iqhutywa yimoto ezimeleyo.
04. Imilinganiselo yokukhusela eyahlukeneyo iyafuneka
Imilinganiselo yokugquma i-insulation kufuneka yamkelwe kwiimotor frequency frequency ezinomthamo ongaphezulu kwe-160KW. Ikakhulu kulula ukuvelisa i-asymmetry yesekethe yemagnethi kunye ne-shaft yangoku. Xa i-current eveliswa ngamanye amacandelo e-high-frequency idibaniswe, i-shaft current iya kwanda kakhulu, ibangele umonakalo wokuthwala, ngoko ke amanyathelo okukhusela athathwa ngokubanzi. Kwiimotor eziguquguqukayo zamandla rhoqo, xa isantya sidlula i-3000 / min, igrisi ekhethekileyo yokumelana nobushushu kufuneka isetyenziswe ukuhlawulela ukunyuka kobushushu bebheringi.
05. Inkqubo yokupholisa eyahlukileyo
I-fan frequency motor yokupholisa i-motor isebenzisa unikezelo lwamandla oluzimeleyo ukuqinisekisa umthamo oqhubekayo wokupholisa.

2.Ulwazi olusisiseko lweemoto

Ukukhetha imoto
Imixholo esisiseko efunekayo kukhetho lweemoto zezi:
Uhlobo lomthwalo oqhutywayo, amandla alinganisiweyo, amandla ombane alinganisiweyo, isantya esilinganiselweyo, kunye nezinye iimeko.
Uhlobo lomthwalo · Injini yeDC · Injini elungelelanisiweyo · Imoto ehambelanayo
Kumatshini oqhubekayo wokuvelisa onomthwalo ozinzileyo kwaye akukho mfuneko zikhethekileyo zokuqalisa kunye nokuqhobosha, iimotor zemagnethi ezisisigxina okanye iimotor ze-squirrel cage asynchronous kufuneka zikhethwe, ezisetyenziswa ngokubanzi koomatshini, iimpompo zamanzi, abalandeli, njl.
Kumatshini wokuvelisa ngokuqala rhoqo kunye nokuqhobosha kwaye kufuna itorque enkulu kunye ne-braking torque, efana neekhreyini zebhulorho, iihosti zemigodi, iicompressor zomoya, ii-rolling Mills ezingaguqukiyo, njl.
Ngezihlandlo ezingenazo iimfuneko zolawulo lwesantya, apho isantya esiqhubekayo sifuneka okanye into yamandla ifuna ukuphuculwa, kufuneka kusetyenziswe iimotor ezisisigxina zemagnethi ezihambelanayo, ezinje ngeempompo zamanzi ezinomthamo ophakathi nomkhulu, iicompressor zomoya, iihoists, ii-mill, njl.
Kumatshini wokuvelisa odinga uluhlu lwesantya solawulo olungaphezulu kwe-1: 3 kwaye ifuna ukulawulwa kwesantya esiqhubekayo, esizinzileyo kunye nesigudileyo, kuyacetyiswa ukuba usebenzise iimotor ze-synchronous zemagnethi ezisisigxina okanye iimotor zeDC okanye i-squirrel cage asynchronous motors ezinommiselo oguquguqukayo wesantya. njengezixhobo ezinkulu zoomatshini bokuchaneka, abacwangcisi be-gantry, ii-rolling Mills, ii-hoists, njl.
Ngokubanzi, i-motor inokumiselwa ngokuthe ngqo ngokubonelela ngohlobo lomthwalo oqhutywayo, amandla alinganisiweyo, i-voltage elinganisiweyo, kunye nesantya esilinganiselweyo semoto.
Nangona kunjalo, ukuba iimfuno zomthwalo kufuneka zifezekiswe ngokufanelekileyo, ezi parameters zisisiseko zikude ngokwaneleyo.
Ezinye iiparameters ekufuneka zibonelelwe zibandakanya: i-frequency, inkqubo yokusebenza, iimfuno zokugqithiswa, inqanaba lokukhusela, inqanaba lokukhusela, umzuzu we-inertia, i-torque yokumelana nomthwalo, indlela yokufakela, ubushushu be-ambient, ukuphakama, iimfuno zangaphandle, njl. iimeko)

3.Ulwazi olusisiseko lweemoto

Amanyathelo okukhetha imoto
Xa i-motor isebenza okanye ihluleka, iindlela ezine zokujonga, ukuphulaphula, ukuvumba kunye nokuchukumisa zingasetyenziselwa ukukhusela nokuphelisa iphoso ngexesha lokuqinisekisa ukusebenza ngokukhuselekileyo kwemoto.
1. Jonga
Qwalasela ukuba kukho naziphi na izinto ezingaqhelekanga ngexesha lokusebenza kwemoto, ezibonakaliswa ikakhulu kwezi meko zilandelayo.
1. Xa i-stator winding is short-circuited, unokubona umsi uphuma kwi-motor.
2. Xa i-motor igxininiswe kakhulu okanye iqhutywe kwilahleko yesigaba, isantya siya kuthoba kwaye kuya kuba nesandi esinzima "sokubetha".
3. Xa i-motor isebenza ngokuqhelekileyo, kodwa ngokukhawuleza iyeka, uya kubona iintlantsi eziphuma kumdibaniso okhululekileyo; ifuse iyavuthelwa okanye inxalenye ixingile.
4. Ukuba i-motor vibrates ngamandla, mhlawumbi isixhobo sokuhambisa sinamathele okanye i-motor ayilungiswanga kakuhle, i-foot bolts ikhululekile, njl.
5. Ukuba kukho i-discoloration, amanqaku okutshisa kunye namanqaku omsi kwiindawo zoqhagamshelwano kunye nokudibanisa ngaphakathi kwe-motor, oko kuthetha ukuba kunokubakho ukufudumala kwendawo, ukudibanisa okungahambi kakuhle kwi-conductor connection okanye i-winding burnt, njl.
2. Phulaphula
Xa i-motor isebenza ngokuqhelekileyo, kufuneka ikhuphe i-uniform kunye nesandi esilula "sokubetha", ngaphandle kwengxolo kunye nezandi ezikhethekileyo.
Ukuba ingxolo iphezulu kakhulu, kubandakanywa ingxolo ye-electromagnetic, ingxolo, ingxolo yokuphuma komoya, ingxolo yomatshini wokukhuhlana, njl.
1. Ngengxolo ye-electromagnetic, ukuba i-motor yenza isandi esiphakamileyo, esisezantsi kunye nesinzima, izizathu zinokuba ngolu hlobo lulandelayo:
(1) I-gap yomoya phakathi kwe-stator kunye ne-rotor ayilingani. Ngeli xesha, isandi siphezulu kwaye siphantsi, kwaye ikhefu phakathi kwezandi eziphezulu kunye nezantsi zihlala zingatshintshi. Oku kubangelwa ukuthwala ukuthwala, okwenza i-stator kunye ne-rotor ingabikho.
(2) Umsinga wamanqanaba amathathu awulingani. Oku kubangelwa kukuzijika kwezigaba ezithathu kusekelwe phantsi ngendlela engeyiyo, kujikelezo olufutshane okanye ukuba noqhagamshelwano olubi. Ukuba isandi sibuthuntu kakhulu, oko kuthetha ukuba i-motor igcwele kakhulu okanye ibaleka ngendlela yesigaba.
(3) Undoqo wentsimbi ukhululekile. Ngexesha lokusebenza kwe-motor, ukungcangcazela kubangela ukuba iibholiti zentsimbi zikhululeke, nto leyo ebangela ukuba i-iron core silicon sheet ikhululeke kwaye yenze ingxolo.
2. Ukuthwala ingxolo, kufuneka ubeke iliso rhoqo ngexesha lokusebenza kwemoto. Indlela yokubeka iliso yile: beka isiphelo esinye se-screwdriver ngokuchasene nenxalenye yokufaka i-bearing kunye nesinye isiphelo kufuphi nendlebe yakho, kwaye unokuva isandi sokuthwala. Ukuba ukuthwala kusebenza ngokuqhelekileyo, isandi sisandi esiqhubekayo kunye esihle "sokurhwashaza", ngaphandle kokuguquguquka okanye izandi zentsimbi.
Ukuba ezi zandi zilandelayo ziyenzeka, yinto engaqhelekanga:
(1) Kukho isandi “sokutswina” xa kuqhutywa umsebenzi. Esi sisandi sentsimbi, esibangelwa ngokubanzi kukungabikho kweoli kwi-bearing. Ukuthwala kufuneka kuhlulwe kwaye umlinganiselo ofanelekileyo wegrisi kufuneka wongezwe.
(2) Ukuba kuvakala isandi “sokuntyiloza,” eso sisandi esibakho xa ibhola ijikeleza. Ngokuqhelekileyo kubangelwa ukomiswa kwegrisi okanye ukungabikho kweoli. Umlinganiselo ofanelekileyo wegrisi unokongezwa.
(3) Ukuba isandi “sokucofa” okanye “sokubetha,” sisandi esiveliswa kukushukuma okungaqhelekanga kwebhola ekuthwaleni. Oku kubangelwa umonakalo webhola kwi-bearing okanye ixesha elide elingasetyenziswanga kwi-motor, okubangelwa ukomisa kwegrisi.
3. Ukuba isixhobo sothumelo kunye nesixhobo esiqhutywayo senza isandi esiqhubekayo endaweni yesandi esiguquguqukayo, sinokusingathwa ngokwezi meko zilandelayo.
(1) Isandi sexesha elithi “pop” sibangelwa yibhanti engalinganiyo.
(2) Isandi sexesha elithi "dong dong" sibangelwa ukukhululeka phakathi kokudibanisa okanye i-pulley kunye ne-shaft, kunye nokunxiba isitshixo okanye isitshixo.
(3) Isandi sokungqubana esingalinganiyo sibangelwa kukungqubana kweencakuba nesiciko sefeni.

3. Ukujoja
Ukusilela nako kunokugwetywa kwaye kuthintelwe ngokujoja imoto.
Vula ibhokisi yesiphambuka kwaye uyijoje ukuze ubone ukuba akukho vumba elitshileyo na. Ukuba iphunga elikhethekileyo lepeyinti lifunyenwe, lithetha ukuba ukushisa kwangaphakathi kwemoto kuphezulu kakhulu; ukuba ivumba elitshileyo eliqinileyo okanye ivumba elitshileyo lifunyenwe, kusenokwenzeka ukuba umnatha wogcino wokugquma waphukile okanye umjikelo utshisiwe.
Ukuba akukho vumba, kuyimfuneko ukusebenzisa i-megohmmeter ukulinganisa ukuchasana kwe-insulation phakathi kwe-winding kunye ne-casing. Ukuba ingaphantsi kwe-0.5 megohms, kufuneka yomiswe. Ukuba ukuchasana ngu-zero, kuthetha ukuba yonakele.
4. Bamba
Ukuchukumisa ubushushu bezinye iinxalenye zemoto kunokugqiba unobangela wempazamo.
Ukuqinisekisa ukhuseleko, sebenzisa umva wesandla sakho ukuze uchukumise i-motor casing kunye neendawo ezingqongileyo zokuthwala.
Ukuba iqondo lobushushu aliqhelekanga, izizathu zisenokuba zezi zilandelayo:
1. Ukungena komoya kakubi. Okufana nokuwa kwefeni, ukuvaleka kombhobho wokungenisa umoya, njl.
2. Ukugcwala. Umsinga mkhulu kakhulu kwaye i-stator winding ishushu kakhulu.
3. I-stator winding turns i-short-circuited okanye i-current phase-three-phase ayilingani.
4. Ukuqala rhoqo okanye ukuqhobosha.
5. Ukuba iqondo lokushisa elijikeleze ukuthwala liphezulu kakhulu, linokubangelwa ukuthwala umonakalo okanye ukungabikho kweoli.

Imimiselo yobushushu obuthwele iMotor, izizathu kunye nokunyangwa kwezinto ezingaqhelekanga

Imimiselo imisela ukuba ubushushu obuphezulu beebheringi eziqengqelekayo abuyi kuba ngaphezulu kwe-95℃, kwaye ubushushu obuphezulu beebheringi zokutyibiliza abuyi kudlula kwi-80℃. Kwaye ukunyuka kweqondo lobushushu akuyi kudlula i-55 ℃ (ukunyuka kobushushu bubushushu obuthweleyo bususe ubushushu be-ambient ngexesha lovavanyo).

Izizathu kunye nonyango lokunyuka kwamaqondo obushushu athwele kakhulu:

(1) Isizathu: I-shaft igobile kwaye umgca ophakathi awuchanekanga. Unyango: Fumana iziko kwakhona.
(2) Unobangela: Izikrufu zesiseko zikhululekile. Unyango: Qinisa izikrufu zesiseko.

(3) Unobangela: Isithambiso asicocekanga. Unyango: Faka endaweni yesithambiso.

(4) Unobangela: Isithambiso sisetyenziswe ixesha elide kwaye asikatshintshwa. Unyango: Coca iibheringi kwaye ubeke endaweni yesithambiso.
(5) Unobangela: Ibhola okanye i-roller kwibheringi yonakele. Unyango: Faka enye endaweni yebheringi.

I-Anhui Mingteng Oomatshini abaSigxina-Magnetic kunye neZixhobo zoMbane Co., Ltd.(https://www.mingtengmotor.com/) ifumene iminyaka eyi-17 yophuhliso olukhawulezayo. Inkampani iphuhlise kwaye yavelisa ngaphezulu kwe-2,000 yeenjini zemagnethi ezisisigxina eziqhelekileyo, iifrikhwensi eziguquguqukayo, ubungqina boqhushumbo, ubungqina bokudubula okuguquguqukayo, ukuqhuba ngokuthe ngqo, kunye nochungechunge olunobungqina bokudubula ngokuthe ngqo. Iinjini ziye zasebenza ngempumelelo kwiifeni, iimpompo zamanzi, abahambisi bebhanti, iibhola zebhola, i-mixers, i-crushers, i-scrapers, iimpompo zeoli, oomatshini bokujikeleza kunye neminye imithwalo kwiinkalo ezahlukeneyo ezifana nemigodi, isinyithi, kunye nombane, ukufezekisa iziphumo ezilungileyo zokulondoloza amandla. kunye nokufumana udumo olubanzi.

Ilungelo lokushicilela: Eli nqaku lishicilelwe kwakhona kwikhonkco lokuqala:

https://mp.weixin.qq.com/s/hLDTgGlnZDcGe2Jm1oX0Hg

Eli nqaku alibonisi iimbono zenkampani yethu. Ukuba unezimvo ezahlukeneyo okanye iimbono, nceda usilungise!