Kungani injini ikhiqiza i-shaft current?

Kungani injini ikhiqiza i-shaft current?

I-current in the motor's shaft-bearing seat-base circuit ibizwa ngokuthi i-shaft current.

Izinkinga ze-shaft current:

I-asymmetry ye-magnetic field;

Kukhona ama-harmonics kugesi wamanje;

Ukukhiqiza nokufakwa okungalungile, okuholela ezikhala zomoya ezingalingani ngenxa yokungangeni kwe-rotor;

Kukhona igebe phakathi kwama-semicircles amabili we-stator core etholakalayo;

Inombolo yezingcezu ze-stator core ezakhiwe imikhakha yokupakisha ayifanelekile.

Izingozi: Indawo ephethe injini noma amabhola azoguguleka bese kwakhiwa ama-micropores afana nephoyinti, okuzokwenza kube kubi kakhulu ukusebenza kwe-bearing, kukhuphule ukulahleka kokungqubuzana nokushisa, futhi ekugcineni kubangele ukuvutha.

Kungani amamotho ajwayelekile engasetshenziswa ezindaweni zasemathafeni?

Ukuphakama kunemiphumela emibi ekukhuphukeni kwezinga lokushisa kwemoto, i-motor corona (i-high voltage motor) kanye ne-DC motor commutation.

Kufanele kuqashelwe izici ezintathu ezilandelayo:

Ukuphakama kokuphakama, kuyanda izinga lokushisa lemoto kanye namandla okukhiphayo amancane.Kodwa-ke, lapho izinga lokushisa lincipha ngokukhuphuka kokuphakama ngokwanele ukuvala ithonya lokuphakama ekukhuphukeni kwezinga lokushisa, amandla okukhiphayo alinganiselwe enjini angahlala engashintshiwe;

Izinyathelo zokuvimbela i-Corona kufanele zithathwe lapho kusetshenziswa ama-motor-voltage aphezulu emathafeni;

I-Altitude ayilungile ekushintsheni kwemoto ye-DC, ngakho-ke kufanele kuqashelwe ekukhetheni izinto ze-carbon brush.

Kungani injini kungafanele isetshenziswe ngomthwalo omncane?

Lapho injini isebenza ngomthwalo omncane, izodala:

Isici samandla emoto siphansi;

Ukusebenza kahle kwezimoto kuphansi.

Lapho injini isebenza ngomthwalo omncane, izodala:

Isici samandla emoto siphansi;

Ukusebenza kahle kwezimoto kuphansi.

Izodala ukumoshwa kwemishini nokusebenza ngendlela engenamnotho.

Yiziphi izimbangela zokushisa kwemoto?

Umthwalo mkhulu kakhulu;

isigaba esilahlekile;

Amapayipi omoya avaliwe;

Isikhathi sokugijima esinesivinini esiphansi side kakhulu;

Ama-harmonics okunikezwa kwamandla makhulu kakhulu.

Imuphi umsebenzi okudingeka wenziwe ngaphambi kokufaka injini engakaze isetshenziswe isikhathi eside?

Linganisa i-stator, ukumelana nokufakwa kwe-insulation kwesigaba ukuya kwesinye esimazombezombe kanye nokumelana nokufakwa kwamajika kuya emhlabathini.

I-insulation resistance R kufanele igcwalise ifomula elandelayo:

R＞Un/(1000+P/1000)(MΩ)

Un: I-voltage elinganiselwe ye-motor winding (V)

P: Amandla emoto (KW)

Okwenjini ye-Un=380V, R＞0.38MΩ.

Uma ukumelana ne-insulation kuphansi, ungakwazi:

a: Injini igijima ngaphandle komthwalo amahora angu-2 kuya kwangu-3 ukuze yomiswe;

b: Sebenzisa i-low-voltage alternating current ka-10% we-voltage elinganisiwe ukuze udlulele endaweni ephendukayo noma uxhume ama-winding ezigaba ezintathu ochungechungeni bese uwabhaka ngomsinga oqondile ukuze ugcine owamanje ku-50% wamanje olinganisiwe;

c: Sebenzisa isiphephetha-moya ukuthumela umoya oshisayo noma into yokushisisa ukuze ushise.

Hlanza injini.

Faka esikhundleni samafutha.

Kungani ngingakwazi ukuqala injini endaweni ebandayo ngokuthanda kwami?

Uma injini igcinwa endaweni enezinga lokushisa eliphansi isikhathi eside kakhulu, izokwenza:

I-motor insulation iphukile;

Ukuthwala amafutha kuqanda;

I-solder powder emajoyini ocingo.

Ngakho-ke, injini kufanele ifudunyezwe futhi igcinwe endaweni ebandayo, futhi ama-windings nama-bearings kufanele ahlolwe ngaphambi kokusebenza.

Yiziphi izimbangela zokungasebenzi kahle kwezigaba ezintathu kumotho?

Ukungalingani kwamandla kagesi wezigaba ezintathu;

Igatsha lesigaba esithile ngaphakathi kwe-motor ine-welding engalungile noma ukuthintana kabi;

I-motor winding ijika-to-turn isekethe emfushane noma isifunda esifushane siye phansi noma isigaba-kuya-isigaba;

Iphutha lezintambo.

Kungani injini engu-60Hz ingakwazi ukuxhunywa kugesi we-50Hz?

Lapho uklama injini, ishidi lensimbi ye-silicon ngokuvamile lenziwa ukuthi lisebenze endaweni yokugcwala kwejika lamagnetization.Lapho i-voltage yokunikezwa kwamandla ihlala njalo, ukunciphisa imvamisa kuzokhuphula i-flux kazibuthe kanye ne-excitation yamanje, okuholela ekwenyukeni kwemoto yamanje kanye nokulahleka kwethusi, okuholela ekwandeni kokukhuphuka kwezinga lokushisa kwemoto.Ezimweni ezimbi kakhulu, injini ingase ishiswe ngenxa yokushisa kwekhoyili.

Yiziphi izimbangela zokulahleka kwesigaba semoto?
Ukunikezwa kwamandla kagesi:

Oxhumana naye wokushintsha ompofu;

I-Transformer noma ikhefu lomugqa;

I-fuse ishaywa.

Isici semoto:

Izikulufu ezisebhokisini lokuhlangana kwezimoto zixega futhi okuthintana naye kubi;

I-welding ye-wiring engalungile yangaphakathi;

I-motor winding iphukile.

Yiziphi izimbangela zokudlidliza okungavamile nomsindo wamamotho?
Izici zemishini:
I-lubrication ne-bearing wear ingasebenzi kahle;
Izikulufu zokubopha zikhululekile;
Kukhona imfucumfucu ngaphakathi injini.
Izici ze-Electromagnetic:
Ukusebenza kwe-motor overload;
Ukungalingani kwamanje kwezigaba ezintathu;
isigaba esilahlekile;
Iphutha lesifunda esifushane lenzeka ku-stator kanye ne-rotor windings;
Ingxenye yokushisela ye-cage rotor ivulekile futhi ibangela imigoqo ephukile.
Imuphi umsebenzi okufanele wenziwe ngaphambi kokuqala injini?

Linganisa ukumelana nokufakwa kwe-insulation (kuma-motor-voltage aphansi, akufanele kube ngaphansi kuka-0.5MΩ);

Linganisa i-voltage yokuhlinzeka.Hlola ukuthi izintambo zemoto zilungile yini nokuthi amandla kagesi ayahlangabezana yini nezidingo;

Hlola ukuthi impahla yokuqala isesimweni esihle yini;

Hlola ukuthi i-fuse ifanelekile yini;

Hlola ukuthi injini isekelwe phansi futhi uxhumano lweziro lulungile;

Hlola ukudluliswa komonakalo;

Hlola ukuthi imvelo yemoto ifanelekile yini futhi ususe izinto ezivuthayo nezinye izibi.

Yiziphi izimbangela zokushisisa kwe-motor bearing?

Injini ngokwayo:

Amasongo angaphakathi nangaphandle okuthwala aqine kakhulu;

Kunezinkinga ngokuma nokubekezelelana kwezindawo, njengokungahlangani kahle kwezingxenye ezifana nesisekelo somshini, ikhava yokugcina, kanye ne-shaft;

Ukukhetha okungalungile kwama-bearings;

Ukuthwala akugcotshisiwe kahle noma ukuthwala akuhlanzwa kahle, futhi kukhona udoti kugrisi;

i-eksisi yamanje.

Ukusetshenziswa:

Ukufakwa okungalungile kweyunithi, njenge-coaxiality ye-motor shaft kanye nedivayisi eqhutshwayo ayihlangabezani nezidingo;

I-pulley idonsa kakhulu;

Ama-bearings awanakekelwa kahle, amafutha awanele noma impilo yesevisi iphelelwe yisikhathi, futhi ama-bearings ayoma futhi awonakele.

Yiziphi izizathu zokumelana nokufakwa kwezimoto okuphansi?

I-winding inomswakama noma ingena emanzini;

Uthuli noma amafutha aqoqana kuma-windings;

Ukuguga kwe-insulation;

I-insulation ye-motor lead noma i-wiring board yonakalisiwe.