- Xem xCt cic khe hb gi8a bbnh cbng thc vj cic chi ti& vb bm ciing nhu dung sai phii d i p h g c i c ti&u chudn ky thuet cho phep.
8.5.2. He thdhg bdo ve tgd@ngmay bum chim
Khi v+n hAnh sit dung m5y burn y&u chu c6 he th6ng bio ve quA tai cha dong ca, sut i p trong h& th6ng đu b6i trm. Khi v+n hhnh loai burn c6 mhng chan dQng c a nguai ta thigt ké them bg rale bHo ve bing ditn v?i bing nhiet th6 hien 6 so đ 107. Khi ifn niit m& FI, hay FI, c8ng tic cuon K ndi vdi c8ng tic chinh v i cbng tac
so đ cha mach. t)6 cho thdi diim khhi dong bio v$ kh6ng lhm vi&c ir dbng cqc dai
Khi ihm viec kh8ng quA tHi c8ng tac rale PM, trong ludi rale trung gian Pl7 66ng mach. Mach cua sa db cugn K kkp kin. Khi i p sugt tut giHm trong he th6ng b0i tron c8ng tic 3 K M trong lu6i Pn kin mach ra le lhm viec tich cuon K, ngat
D& thưn Iqi cho viec bHo quin tram b m dat hai ndt di&u hhnh dong cu, mot
nlit trqc tiep d0ng ccụ cbn c A i khic thqc hien q u i tdnh Iim viec.
Vbi muc dich su be giHm tap chgt bdn 3 khoang dqng cu kQ c$u d m g cu (hinh 89) xem x6t ph~cmg phlp lhm kin truc dong cu lim vhng d&m tay Bo 2. ~d
loai t r i ~ mt giim i p sugt len vbng lim kin ch&t 16ng & khoang r8tor. Khoang d0ng c a lien he ch!t chE vdi cinh 4. V6i budng hilt cba bom, lhm kin tir phia barn cfing nam
trong iip sugt hht. Kgt cgu born th!t SIJ d m giin vh b$n.
Nhuuc diim: xugt hien lhm kin dong vh thu nhiet b dong co k&m (3).
6 met s6 loai born xern hinh 90 trong h& thdng phan tHi thuf lqc c6a bam h& thdng thui lgc lien lac g i L bu6ng dong co v6i barn bing ti& llnr khe hir 7 lubn luBn duy tri c$b ngq tia lira tir chiit lbng d8 chay trong dong cọ Luc doc t v c trong 6ng bam thu nh9n do g6i d a thuy lqc.
Trong sb kgt cíu chim đ bHo vc cuon stator khbi su xugt hien chAt long
& cha ra dóihm kin vb bi hbng phii xern xkt thi& b/ ti& n ~ 6 c ir budng g i h hai
vbng bac lhm kin d6 giir luu l u ~ g chilt lbng khi su cb cat nguBn nSing luqng tr&n
t y c rbtor duqc dat bcinh d i quay trong m6i t1'11dng nu& bum.
Trong B'ng xa cua barn n h i h ciip duqc dGt lu6i loc hinh ling tv (4) m6t phin chiit 16ng h3m nong. Chia ra tir h u h g tarn truc chHy qua phin loc 4. Khi barn lim vice phin loc tq dong 1im sach dbng nu& dun n6ng chinh.
Tr&n hinh V111.3 th8 hien s o dB miy bam c6 thik't bi cat tv dong. B m chim 1Bng vio met kh6i (m6t vh) cuQn day d0ng cu (3) duuc bao ve t6t khbi nudc. Barn (2) co th8 c i t bing he phao t~ dong (1) ho* bing tay, khqng phu thu6c vio he . tu .
d0ng d6ng cu di&n 3 cGa barn cbng sugt 0,5 mh lqc (0,73kw) v6i t6c dB vbng quay 2800 v/phlit c6 the 1 pha (2208) hoac 22011 80V) trong lugng c6a burn 9,5 KW kich thudc nh6 nhgt cho burn nu& phuc y 6 mB, gigng 12 40*40cm.