Ukuthoba i-Motor Shaft kuphucula ukuthembeka kwe-Inverter-Powered Motors

Iinjineli zogcino kwincopho yezakhiwo zorhwebo okanye izityalo zemizi-mveliso zihlala zihlaziya iimotor kwaye zijonga ezinye iimpawu zokudinwa, kwaye ngaphandle kwezixhobo zokukhusela okanye isoftware yolawulo lokuxela kwangaphambili ukubonelela ngezilumkiso, iinjineli zinokuma kwaye zicinge, "Zeziphi ezo motors iya iba worse?"Ngaba iya ivakala, okanye yingcinga yam nje le?”Iinzwa zangaphakathi zobunjineli (ukuva) kunye ne-hunches (i-alamu eziqikelelwayo) zemoto zinokuthi zichanekile, ngokuhamba kwexesha, iibheringi ziphakathi kolwazi lomntu.Ukunxiba kwangaphambili kwimeko, kodwa kutheni?Lumkela olu nobangela “mtsha” wokungaphumeleli kwaye wazi ukuba ungayinqanda njani ngokususa umbane wendlela eqhelekileyo.

Kutheni iinjini zisilela?

Ngelixa kukho izizathu ezininzi ezahlukeneyo zokungaphumeleli kwemoto, unobangela wokuqala, ixesha kunye nexesha kwakhona, unokusilela.Iinjini zemizi-mveliso zihlala zifumana izinto ezahlukeneyo zokusingqongileyo ezinokuchaphazela kakubi ubomi bemoto.Ngelixa ungcoliseko, ukufuma, ubushushu okanye ukulayisha okungalunganga ngokuqinisekileyo kunokubangela ukungaphumeleli kokuthwala kwangaphambi kwexesha, enye into enokubangela ukusilela ekuthwaleni kumbane wemowudi eqhelekileyo.

Umbane wemowudi eqhelekileyo

Uninzi lweenjini ezisetyenziswayo namhlanje zisebenza kumbane onqamlezileyo, okuthetha ukuba ziqhagamshelwe ngokuthe ngqo kumandla amanqanaba amathathu angena kwindawo (ngesixhobo sokuqalisa).IiMoto eziqhutywa kukuguquguquka kwee-frequency drives ziye zaxhaphaka ngakumbi njengoko izicelo ziye zanzima ngakumbi kumashumi ambalwa eminyaka adlulileyo.Inzuzo yokusebenzisa i-frequency frequency drive drive motor kukubonelela ngolawulo lwesantya kwizicelo ezinje ngeefeni, iimpompo kunye nabahambisi, kunye nokuqhuba imithwalo ngokufanelekileyo ukugcina amandla.

Enye into engalunganga yokuguquguquka kwamaza ombane, nangona kunjalo, kukubakho kombane wemowudi eqhelekileyo, enokuthi ibangelwe kukungalingani phakathi kombane wenqanaba lesithathu lokuqhuba.Ukutshintsha kwesantya esiphezulu se-pulse-width-modulated (PWM) inverter kunokubangela iingxaki kwi-motor windings kunye neebheringi, ii-windings zikhuselwe kakuhle nge-inverter anti-spike insulation system, kodwa xa i-rotor ibona i-voltage spikes iqokelelana, okwangoku. ifuna iNdlela yokuchasana nokuncinci emhlabeni: ngeebheringi.

Iinqwelo zeemoto zixutywe ngegrisi, kwaye ioli kwigrisi yenza ifilimu esebenza njenge-dielectric.Ngokuhamba kwexesha, le dielectric idiliza, inqanaba le-voltage kwi-shaft liyanyuka, ukungalingani kwangoku kufuna indlela yokunciphisa ubuncinci ngokuthwala, okubangela ukuba i-arc ibe yi-arc, eyaziwa ngokuba yi-EDM (i-Electrical Discharge Machining).Ngokuhamba kwexesha, le ngqungquthela eqhubekayo iyenzeka, iindawo ezingaphezulu kwimidyarho yokuthwala ziba yi-brittle, kwaye iincinci ezincinci zentsimbi ngaphakathi kwibherethi zinokuphuka.Ekugqibeleni, le nto eyonakalisiweyo ihamba phakathi kweebhola ezithwele kunye neentlanga ezithweleyo, idala i-abrasive effect enokubangela iqabaka okanye i-grooves (kwaye inokunyusa ingxolo ye-ambient, i-vibration, kunye nobushushu bemoto).Njengoko imeko iya isiba mandundu, ezinye iinjini zinokuqhubeka nokusebenza, kwaye kuxhomekeke kubuzaza bengxaki, ekugqibeleni umonakalo kwiibheringi zeemoto unokungaphepheki ngenxa yokuba umonakalo sele wenziwe.

ngokusekelwe kuthintelo

Indlela yokuphambukisa umsinga ukusuka ekuthwaleni?Isisombululo esiqhelekileyo kukongeza umhlaba we-shaft kwelinye icala le-motor shaft, ngakumbi kwizicelo apho i-voltages yemowudi eqhelekileyo inokuthi ixhaphake.Ukumisa i-Shaft ngokusisiseko yindlela yokudibanisa i-rotor ejikelezayo yemoto ukuya emhlabeni ngesakhelo semoto.Ukongeza i-shaft ground kwi-motor (okanye ukuthenga i-motor efakwe ngaphambili) ngaphambi kokufakela inokuba lixabiso elincinci xa kuthelekiswa neendleko zokulondoloza ezinxulumene nokuthwala ukutshintshwa, singasathethi ke ngeendleko eziphezulu zokunciphisa indawo.

Iindidi ezininzi zamalungiselelo okumisa i-shaft zixhaphakile kwishishini namhlanje.Ukufakela iibrashi zekhabhoni kwizibiyeli kusadumile.Ezi ziyafana neebhrashi zekhabhoni zeDC eziqhelekileyo, ezibonelela ngokudityaniswa kombane phakathi kweendawo ezijikelezayo nezimileyo zesekethe yemoto..Uhlobo olutsha lwesixhobo kwimarike sisixhobo seringi yebrashi yefiber, ezi zixhobo zisebenza ngendlela efanayo kwiibhrashi zekhabhoni ngokubeka imicu emininzi yeefiber zokuqhuba kwisangqa esijikeleze ishafti.Umphandle weringi uhlala umile kwaye udla ngokuxhonywa kwipleyiti yokuphela kwemoto, ngelixa iibhrashi zikhwela kumphezulu we-motor shaft, ziphambukisa umsinga kwiibhrashi kwaye zibekwe ngokukhuselekileyo.Nangona kunjalo, kwiinjini ezinkulu (ngaphezulu kwe-100hp), kungakhathaliseki ukuba isixhobo sokumisa i-shaft sisetyenzisiweyo, kuyacetyiswa ngokubanzi ukuba kufakwe i-bearing bearing kwelinye icala le-motor apho isixhobo sokumisa i-shaft sifakwe ukuqinisekisa ukuba zonke ii-voltages kwi-rotor zikhona. ikhutshwe ngesixhobo sokumisa phantsi.

ukuququmbela

Ukuqhuba okuguquguqukayo okuguquguqukayo kunokonga amandla kwizicelo ezininzi, kodwa ngaphandle kokumiswa okufanelekileyo, kunokubangela ukusilela kwangaphambi kwexesha.Kukho izinto ezintathu ekufuneka uziqwalasele xa uzama ukunciphisa umbane wemowudi eqhelekileyo kusetyenziso oluguquguqukayo lwe-frequency drive: 1) Qinisekisa ukuba i-motor (kunye ne-motor system) isekelwe ngokufanelekileyo.2) Misela ibhalansi yefrikhwensi efanelekileyo, eya kunciphisa amanqanaba engxolo kunye nokungalingani kombane.3) Ukuba i-shaft grounding ibonwa iyimfuneko, khetha isiseko esifanelekileyo kwisicelo.