Isici esiqondile kakhulu sama-asynchronous motors ukuthi kukhona umehluko phakathi kwejubane langempela le-motor kanye nesivinini samagnetic field, okungukuthi, kukhona ukushelela; uma kuqhathaniswa namanye amapharamitha okusebenza kwenjini, isiliphu senjini yisona esitholakala kalula, futhi noma yimuphi umsebenzisi wemoto angasebenzisa okulula. Ukusebenza kubalwa.
Enkulumweni yamapharamitha wokusebenza kwenjini, izinga lokushelela liyipharamitha yokusebenza ebaluleke kakhulu, ebonakala ngephesenti lesiliphu esihlobene nesivinini esivumelanayo. kwe.Isibonelo, imvamisa yamandla engu-2-pole motor enesilinganiso sokushelela esingu-1.8% kanye nemoto enezigxobo eziyi-12 inomehluko omkhulu ekusheleleni okuphelele kwangempela. Uma izinga lokushelela lilingana no-1.8%, ukushelela kwe-asynchronous motor ye-2-pole power frequency frequency ngu-3000 × 1.8% = 54 rpm, ukushelela kwe-12-pole power frequency motor ngu-500 × 1.8% = 9 rpm.Ngokufanayo, kuma-motor anezigxobo ezihlukene ezine-slip efanayo, izilinganiso zokushelela ezihambisanayo nazo zizohluka kakhulu.
Kusukela ekuhlaziyeni okuqhathanisayo kwemiqondo yokushelela nokushelela, ukushelela kuyinani eliphelele, okungukuthi, umehluko ophelele phakathi kwesivinini sangempela kanye nesivinini sikazibuthe esivumelanayo, futhi iyunithi ithi rev/min; kuyilapho ukushelela kungumehluko phakathi kwesiliphu kanye nesivinini sokuvumelanisa. iphesenti.
Ngakho-ke, isivinini sokuvumelanisa nesivinini sangempela senjini kufanele kwaziwe lapho kubalwa isiliphu.Ukubalwa kwejubane lokuvumelanisa lemotho kususelwa kufomula ethi n=60f/p (lapho u-f kuyinani elilinganiselwe lemvamisa yenjini, futhi u-p uyinombolo yamapheya wezigxobo zenjini); Ngakho-ke, ijubane lokuvumelanisa elihambisana nemvamisa yamandla 2, 4, 6, 8, 10 kanye ne-12 Isivinini singama-3000, 1500, 1000, 750, 600 no-500 rpm.
Ijubane langempela le-motor lingatholwa yi-tachometer, futhi libalwa ngokwenani lama-revolutions ngomzuzu.Isivinini sangempela se-asynchronous motor singaphansi kwejubane lokuvumelanisa, futhi umehluko phakathi kwejubane elivumelanisayo kanye nesivinini sangempela ukushelela kwe-asynchronous motor, futhi iyunithi i-rev/min.
Kunezinhlobo eziningi zama-tachometers, futhi ama-tachometer kagesi awumqondo ojwayelekile: amathuluzi okulinganisa isivinini ajikelezayo aklanywe futhi akhiqizwa ngokusekelwe kubuchwepheshe besimanje be-elekthronikhi ngokuvamile anezinzwa nezibonisi, kanti amanye aphinde abe nokuphuma kwesignali nokulawula.Ihluke kubuchwepheshe bendabuko bokulinganisa isivinini se-photoelectric, i-tachometer ye-inductive ayidingi ukufaka inzwa ye-photoelectric, akukho isandiso se-motor shaft, futhi ingasetshenziswa embonini yepompo yamanzi nakwezinye izimboni lapho kunzima khona ukufaka izinzwa.
Isikhathi sokuthumela: Mar-30-2023