Motar rotor induction dumama kayan aiki da shaft dumama jaket

Na’ura mai juyi mara shaft na motar an yi shi da zanen karfe na silicon kuma an zuba shi cikin duka tare da ruwa na aluminum. Bayan an ɗora shi zuwa wani zafin jiki, ana ɗaukar zafi a kan sandar da aka sarrafa. Bayan sanyaya, ana gyara rotor mara igiya tare da shaft don zama linzamin kwamfuta. Cage rotor.

A da, yawancin masana’antun masana’antu sun yi amfani da tanderun wuta ko tanderun juriya don ƙona rotors mara ƙarfi. Don haɓaka ingancin dumama da haɓaka aiki, da rage yawan amfani da wutar lantarki da farashin samarwa, an haɓaka kayan aikin dumama don rotors marasa shaft kuma an sami sakamako mafi kyau. Kyakkyawan sakamako, yanzu ana amfani dashi a samarwa

An zaɓi mitar halin yanzu bisa ga diamita na rotor mara ƙarfi. Don rotor mara igiya na injin gabaɗaya, ana amfani da kayan aikin dumama mitar wutar lantarki don girman diamita; don ƙananan rotors mara igiya, ana amfani da kayan aikin dumama na tsaka-tsaki. Hoto na 12-24 yana nuna cikakken saitin na’ura mai juyi mai jujjuya wutar lantarki shigar da kayan dumama, gami da mitar wutar lantarki induction kayan dumama, katunan wuta, da kabad na lantarki.

Hoto 12-24 Shaftless rotor ikon mitar dumama cikakken kayan aiki

1. Tsari sigogi na shaftless rotor zafi hannun riga shaft

Tsarin na’ura mai zafi na rotor mai zafi mai zafi yana dogara ne akan matsakaicin tsangwama tsakanin shaft da rami na ciki na na’ura mai juyi don sanin zafin dumama na rotor maras nauyi. Matsakaicin zafin jiki na dumama (ba tare da) shine inda H ——shaft da Matsakaicin tsangwama tsakanin diamita na ciki na rotor mara shaft (mm); D ——diamita na ciki na rotor mara shaft (mm); K——madaidaicin faɗaɗa faɗaɗawar takardar siliki. K= (11 ~ 13) 10-6

Domin sauƙaƙe da zafi hannun riga na shaftless na’ura mai juyi a kan shaft, da kuma la’akari da yawan zafin jiki ragewa a lokacin zafi hannun riga tsari, da dumama zafin jiki na shaftless na’ura mai juyi ya kamata da dama digiri mafi girma fiye da m dumama zafin jiki, dangane da. musamman halin da ake ciki.

2. Zaɓin mitar halin yanzu na induction dumama kayan aiki

Ingartaccen kayan aikin induction dumama kayan aikin yana ƙaddara ta ainihin zaɓi na mitar yanzu. Zurfin shigar da p na yanzu – tsayayyar aikin yanki (ft • cm); f-ƙaddamar da dangi na yanki na aikin;

Ana iya gani daga wannan dabarar da ke sama cewa lokacin da resistivity p da dangi permeability na workpiece ne m, kamar yadda na yanzu mita f ƙara, da shigar azzakari cikin farji zurfin na yanzu a kan workpiece zama karami da karami. An yi imani da cewa ruwan da aka jawo yana gudana ne kawai a cikin Layer mai shiga yanzu, kuma zafinsa yana samuwa ne kawai a cikin wannan Layer na yanzu. Shaftless na’ura mai juyi thermal shaft shaft yana buƙatar rami na ciki na na’ura mai juyi da za a faɗaɗa thermally, kuma ƙarfen da ke ƙasa da zurfin shigar yanzu a cikin na’ura mai juyi mara nauyi zai iya zama mai tsanani daga Layer mai zafi a cikin hanyar da za a iya sarrafa ta. Lokacin da mitar halin yanzu ya fi girma, lokacin da ake buƙata don irin wannan canjin zafi ya fi tsayi, wanda ke ƙara yawan zafin da ke watsawa cikin matsakaicin kewaye ta hanyar rotor mai zafi mara ƙarfi, kuma yana rage ƙarfin zafi na na’urar dumama induction. Domin inganta yanayin zafi na induction dumama kayan aikin, dole ne a gajarta lokacin dumama. Hanyar ita ce don rage mita na yanzu kuma ƙara zurfin shigar azzakari cikin farji na yanzu akan kayan aikin.

Tun da takardar siliki na siliki na rotor maras nauyi yana da kyawawa mai kyau na maganadisu, ƙarancin dangi yana da girma, kuma zurfin shigarsa na yanzu ƙanana ne. Lokacin da rotor mara igiya yana mai tsanani da 1000Hz halin yanzu, bambancin zafin jiki tsakanin saman waje da rami na ciki shine 100 -150 ^, wato, lokacin da rami na ciki ya kasance 250Y, zafin jiki na waje shine 350-400 nil. Misali, idan aka yi amfani da dumama shigar da mitar wutar lantarki na yanzu, bambancin zafin jiki tsakanin saman ciki da na waje shine tsawon 20 ~ 50. Idan zafin rami na ciki shine 250Y kuma zafin jiki na waje shine 270 ~ 300 ^ o, zafin zafi na dumama yana da yawa don cimma yanayin zafin jaket ɗin dumama iri ɗaya. Mai dacewa don ceton iko.