- T\X NDP den 64"C dien trd suat giam tuan theo quy luat ciia chat band an gia tr
14Nguyen Nfing Dinh
G i a m d a n n h i e t do do d e n N D P , dUdng dac trUng V o n - A m p e lai dUdc t h i e t lap nhU cụ N h u vay, m a n g m o n g V O . cd h i e u iing c h u y e n p h a t h u a n n g h i c h . N g h i e n cdu sU p h u t h u o c cua dien a p c h u y e n m a c h vao n h i e t do moi trUdng cho t h a y : t h e o chieu t a n g c u a n h i e t do, dicn dp chuyên m a c h g i a m d a n t u a n t h e o qui l u a t cua mo h i n h n h i e t do tdi h a n [9]. C u n g vdi sU g i a m cua dicn a p c h u y e n m a c h , c u o n g do dong dien c h u y e n m a c h c u n g giam, tiic la cong s u a t c h u y e n m a c h (cong s u a t ngUdng de cho q u a t r i n h c h u y e n m a c h xay ra) giam d a n theo chieu t a n g c u a n h i c t do moi trUdng, dieu n a y cd t h e dUdc giai thich la do cong s u a t tieu tan giam khi nhiiet do moi trvfdng t a n g .
N g h i e n ciiu q u a t r i n h c h u y e n p h a B D K L cua m a n g m d n g VỌ, n h a n t h a y mot each k h a t u d n g m i n h t h d n g q u a p h e p do dac trUng V o n - A m p e *-udn h o a n ( H i n h 5): Tai n h i e t do phong (<T^= 64"C), q u a t r i n h c h u y e n m a c h x u a t hien t h e o ca c h i e u t a n g va chieu giam c u a đng dien. Ca h a i c h u kỵ dUdng d a c trUng Von-Ampe t u d n h o a n deu triing n h a u ( H i n h 5D),
chiing td n h i e t lUdng s i n h r a do d d n g dien k h o n g a n h hUdng den q u a t r i n h c h u y e n m a c h .
Khi n h i e t do moi t r U d n g x u n g q u a n h m a u d a t dén 70"C > T^, t h i q u a t r i n h c h u y e n m a c h k h d n g cdn x u a t h i e n , d u d n g d a c trUng V o n - A m p e t u a n h o a n la d u d n g t h a n g t u y e n tfnh (Hinh 5K) cho p h e p gia t h i e t c h u n g t h u o c t h u o c p h a td giac c u a VỌj. Khi de moi trUdng bao q u a n h m a u nguoi ve N D P d u d n g d a c trUng V o n - A m p e t u a n h o a n lai dUdc t h i e t l a p nhU cii (Hinh 5F). Vdi h a i p h e p do d i e n va do dac trUng V o n - A m p e t u a n h o a n deu p h a t h i e n t h a y hien tUdng c h u y e n p h a B D K L xay r a mot each t h u a n n g h i c h .
Linh k i e n c h u y e n m a c h che t a o t d m a n g m d n g V O . cd t h e b o a t dong d che do cong s u a t h e n tuc hoac d o n g h e n t u c . Cho đng dien c h a y q u a m a n g m d n g VÔ va q u a n s a t q u a trinh c h u y e n m a c h xay r a : b a n đu t h e o chicu t a n g c u a đng dien, cong s u a t toa n h i e t ciing
t a n g theo cho td\ kin m a u dUdc đt n d n g deii n h i e t do ~ 64"C thi q u a t r i n h c h u y e n mach xa}'
rạ T r o n g q u a irinh. c h u y e n m a c h , t u y cUdng do d d n g dien v a n t a n g , n h u n g cdng s u a t hu gidm. dicu nay chUng td d i e n iro c u a mdu giani r a t m a n h . Vdi t i n h c h a t nay m a n g m d n g
VỌ cau t r u e n a n d dUdc u n g dij.n£: de che tao c h u y e n m a c h n h i e l - d i e n t h o n g m m h bao
ngiidng dien t h e hoac d d n g q u a lai t r o n g cac t h i c t bi hoac he t h d n g tU đng hoa q u a t r i n h san x u a l .
4 . K d t l u a n
M a n g m o n g V O . cau t r u e n a n d t i n h t h e da dUdc che tao b d n g phUdng p h a p bdc bay c h u m iia dien id va tai k d . t i n h t r o n g mdi trUdng oxy a p s u a t t h a p . Vdi eau true n a n o t i n h ttie m a n g V O . co r d u e i do c h u y e n p h a b a n d a n - k i m loai g i a m 4"C (idc la T, = G4"C} so vd; m a n g VỌ. binh ihtrdng (T, = 6S"C). Tai v u n g n h i e t do c h u y e n piia cae l i n h c h d i q u a n g va dien cua m a n g m o n g cdu true n a n o da t h a y đ'i dot n g o t va co tinli t h u a n iighach tdt. Vdi eac Linh c h a t na>' mar:g m o n g VỌ, cd t h e d n g d u n g t r o n g ky t h u a t cho too c a m bidn n h i c t - q u a n g va c h u y e n m a c h I r . i n ; : ' ; u n h sd d u n g t r o n g eac k h o t a n g cluia c h d i long do ehay, hoa c h a t iJoc liai hoac b a o ngUdọg dien t h e v i d d n g d i e n q u a taị
L d i c a m on
T,' • ^u\ c h d n Ihẹnh earn dn TS. Dd Hong T h a n h va cac cong sU khde cua Vien K H \ ' L . Vien Kb.'.a hC'C va C J n g nglie Viet N a m ve vice ihUc Inen cac t h u c n g h i e m c\\e tao m a u . Vien Kb.'.a hC'C va C J n g nglie Viet N a m ve vice ihUc Inen cac t h u c n g h i e m c\\e tao m a u .
Linh kiOn quang dien lir tren ca .sd.
15
Cong t r i n h n a y dUdc h o a n t h a n h nhd sU h o trd k i n h p h i cho de t a i Dac biet c a p D H Q G Ha Noi h a i n a m 2 0 0 4 - 2 0 0 5 .
TAI LIEU THAM KHAO