Hambisa izandla zakho ezincinci kwaye uhlale kude nokusilela kwemoto okucaphukisayo?

Hambisa izandla zakho ezincinci kwaye uhlale kude nokusilela kwemoto okucaphukisayo?

1. Injini ayinakuqalwa

1. Injini ayijiki kwaye akukho sandi.Isizathu kukuba kukho isigaba esibini okanye sesithathu sesiphaluka esivulekileyo kwi-motor power supply okanye i-winding.Okokuqala jonga umbane wobonelelo.Ukuba akukho mbane kwizigaba ezithathu, impazamo ikwisekethe;ukuba i-voltage yesigaba sesithathu ilinganisiwe, impazamo ikwimotor ngokwayo.Ngeli xesha, ukuchasana kwee-windings ezithathu ze-motor kunokulinganiswa ukufumanisa i-windings ngesigaba esivulekileyo.

2. I-motor ayiguquki, kodwa kukho isandi esithi "humming".Ukulinganisa i-terminal ye-motor, ukuba i-voltage yesigaba sesithathu ilinganisiwe kwaye ixabiso elilinganisiweyo linokugwetywa njengomthwalo onzima.

Amanyathelo okuhlola: okokuqala susa umthwalo, ukuba isantya kunye nesandi semoto siqhelekile, sinokugwetywa ukuba ukugqithiswa okanye inxalenye yomatshini yomthwalo iphosakele.Ukuba ayikajiki, ungajika i-motor shaft ngesandla.Ukuba iqinile kakhulu okanye ayikwazi ukujika, yenza umlinganiselo wamanqanaba amathathu.Ukuba inqanaba lesithathu langoku lilungelelene, kodwa likhulu kunexabiso elilinganisiweyo, mhlawumbi inxalenye yomatshini yemoto ibambekile kwaye i-motor Ukunqongophala kweoli, ukuthwala i-rust okanye umonakalo omkhulu, i-cover cover okanye i-oyile igubungele. efakwe ngokungqongqo kakhulu, i-rotor kunye ne-internal bore ziyangqubana (ekwabizwa ngokuba kukutshayela).Ukuba kunzima ukuguqula i-motor shaft ngesandla kwi-angle ethile okanye ukuba uva isandi se-periodic "chacha", sinokugwetywa njengokutshayela.

Izizathu zezi:

(1) Umsantsa phakathi kwamakhonkco angaphakathi nangaphandle ebheringi mkhulu kakhulu, kwaye ukuthwala kufuneka kutshintshwe.

(2) Igumbi lokuthwala (umngxuma wokuthwala) likhulu kakhulu, kwaye ububanzi bomngxuma ongaphakathi bukhulu kakhulu ngenxa yokuguga kwexesha elide.Inyathelo likaxakeka kukwenza i-electroplate umaleko wesinyithi okanye ukongeza umkhono, okanye ukubethelela amanqaku amancinci eludongeni lwegumbi lokuthwala.

(3) I-shaft igobile kwaye isigqubuthelo sokugqibela sigugile.

3. I-motor ijikeleza ngokukhawuleza kwaye ihamba kunye nesandi esithi "humming", kunye ne-shaft vibrates.Ukuba umlinganiselo olinganisiweyo wesigaba esinye ngu-zero, kwaye i-current yezinye izigaba ezibini idlula kakhulu i-current rated current, ithetha ukuba kukusebenza kwezigaba ezimbini.Isizathu sesokuba esinye isigaba sesekethe okanye unikezelo lwamandla luvulekile okanye isigaba esinye sokuvuthuluka kwemoto sivulekile.

Xa esinye isigaba semoto encinci sivulekile, sinokujongwa nge-megohmmeter, i-multimeter okanye isibane sesikolo.Xa uhlola i-motor kunye neenkwenkwezi okanye i-delta uxhumano, i-joints of the three-phase windings kufuneka ihlanjululwe, kwaye isigaba ngasinye kufuneka silinganiswe kwisiphaluka esivulekileyo.Uninzi lwee-windings ze-medium-capacity motors zisebenzisa iingcingo ezininzi kwaye zixhunyiwe ngokuhambelanayo malunga namasebe amaninzi.Kunzima ngakumbi ukujonga ukuba ngaba iingcingo ezininzi zophukile okanye isebe elihambelanayo linqanyuliwe.Indlela yokulinganisa yangoku yenqanaba lesithathu kunye nendlela yokuchasana isetyenziswa rhoqo.Ngokuqhelekileyo, xa umehluko phakathi kwemigangatho emithathu yangoku (okanye ukuchasana) ingaphezulu kwe-5%, isigaba esinombane omncinci (okanye ukuchasana okukhulu) sisigaba sesiphaluka esivulekileyo.

Ukuziqhelanisa kubonakalise ukuba impazamo yesekethe evulekileyo yemoto yenzeka kakhulu ekupheleni kokujija, ukudibanisa okanye ukukhokela.

2. I-fuse ivuthelwe okanye i-thermal relay iyanqanyulwa xa iqala

1. Amanyathelo okusombulula ingxaki.Khangela ukuba umthamo we-fuse ufanelekile, ukuba umncinci kakhulu, yifake endaweni efanelekileyo kwaye uzame kwakhona.Ukuba i-fuse iyaqhubeka nokuvuthela, khangela ukuba ibhanti yokuqhuba igxininise kakhulu okanye umthwalo ukhulu kakhulu, nokuba kukho isiphaluka esifutshane kwisiphaluka, nokuba i-motor ngokwayo ifutshane okanye iphantsi.

2. Indlela yokujonga impazamo ephantsi.Sebenzisa i-megohmmeter ukulinganisa ukunyanzeliswa kwe-insulation ye-motor winding ukuya emhlabeni.Xa ukunyanzeliswa kwe-insulation kuphantsi kwe-0.2MΩ, kuthetha ukuba ukujika kumanzi kwaye kufuneka kumiswe.Ukuba ukuchasana ku-zero okanye isibane sokulinganisa sisondele ekukhanyeni okuqhelekileyo, isigaba sisekelwe.Ukujika okujikajikayo kwenzeka ngokubanzi kwindawo yokuphuma yenjini, umngxuma wokungena wentambo yombane okanye indawo ejikozayo yolwandiso.Kwimeko yokugqibela, ukuba kufunyaniswe ukuba impazamo yomhlaba ayinzulu, i-bamboo okanye iphepha le-insulating lingafakwa phakathi kwe-stator core kunye ne-winding.Emva kokuqinisekisa ukuba akukho mhlaba, unokugqunywa, upende ngepeyinti ye-insulating kwaye yomiswe, kwaye uqhubeke usetyenziswa emva kokugqithisa ukuhlolwa.

3. Indlela yokuhlola yokuvala impazamo yesekethe emfutshane.Sebenzisa i-megohmmeter okanye i-multimeter ukulinganisa ukunyanzeliswa kwe-insulation phakathi kwazo naziphi na izigaba ezibini kwimigca yokudibanisa eyahlukileyo.Ukuba ide isondele kwi-zero ngaphantsi kwe-0.2Mf, ithetha ukuba isiphaluka esifutshane phakathi kwezigaba.Ukulinganisa imisinga yee-windings ezintathu ngokulandelelanayo, isigaba esinowona mbane mkhulu sisigaba esifutshane, kwaye i-short-circuit detector ingasetyenziselwa ukujonga i-interphase kunye ne-inter-turn short circuits of windings.

4. Indlela yokugweba ye-stator ejikeleza intloko kunye nomsila.Xa ulungisa kwaye ukhangele i-motor, kuyimfuneko ukuphinda uphinde uhlolisise intloko kunye nomsila we-stator winding ye-motor xa i-outlet ichithwa kwaye ilibalekile ukuba ibhalwe okanye ileyibhile yasekuqaleni ilahlekile.Ngokubanzi, indlela yokusika intsalela yemagnethi yokuhlola, indlela yokuhlola i-induction, indlela yokubonisa i-diode kunye nendlela yokuqinisekisa ngokuthe ngqo yomgca wokutshintsha ingasetyenziswa.Iindlela ezininzi zokuqala zonke zifuna izixhobo ezithile, kwaye umlinganisi kufuneka abe namava athile asebenzayo.Umgaqo wokuqinisekisa ngokuthe ngqo wokutshintsha intloko yentambo ilula, kwaye ikhuselekile, ithembekile kwaye inembile.Sebenzisa ibhloko ye-ohm ye-multimeter ukulinganisa ukuba zeziphi iziphelo zocingo ezimbini ezikwisigaba esinye, kwaye emva koko uphawule intloko kunye nomsila we-stator winding.Iintloko ezintathu (okanye imisila emithathu) yeenombolo eziphawulweyo zixhunyiwe kwisekethe ngokulandelanayo, kwaye imisila emithathu eseleyo (okanye iintloko ezintathu) idibene kunye.Qala injini ngaphandle komthwalo.Ukuba ukuqala kucotha kakhulu kwaye ingxolo iphezulu kakhulu, oko kuthetha ukuba intloko kunye nomsila wesigaba esinye sokujikoza zibuyiselwa umva.Ngeli xesha, amandla kufuneka anqunyulwe ngokukhawuleza, indawo yokudibanisa kwesinye sezigaba kufuneka iguqulwe, kwaye ke amandla kufuneka avulwe.Ukuba isafana, ithetha ukuba isigaba sokutshintsha asiguqulwanga.Buyisa intloko kunye nomsila wesi sigaba, kwaye utshintshe ezinye izigaba ezibini ngokulandelelana ngendlela efanayo de isandi sokuqala semoto siqhelekile.Le ndlela ilula, kodwa kufuneka isetyenziswe kuphela kwiinjini ezincinci kunye neziphakathi ezivumela ukuqala ngokuthe ngqo.Le ndlela ayinakusetyenziswa kwiinjini ezinomthamo omkhulu ongavumeli ukuqala ngokuthe ngqo.