6. Uzgich-taqsimlagichdagi markazdan qochma va vakuum rosdagichlarning vazifasi nimadan iborat?
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1 2 .1 - rasm.
Y orugM ik o q im ining ta q s im ta n ish i ( a ) va q a y ta rg ic h n in g q a m ro v b u rc h a g i ( b ) : 2 a - n u r n i n g y o y i l i s h b u r c h a g i ; 2 a - q a y t a r g i c h n i n g q a m r o v b u r c h a g i ; / - f o k u s m a s o f a s i . 1 2 . 2 . C h o ‘g ‘l a n is h l a m p a l a r i Traktorlarda avtom obillam i c h o ‘g ‘lanish lampalari qoMlaniladi. Elektr toki o ‘tishi natijasida lam p an in g ch u lg ba m i qiziydi va m a 'l u m h aro ra td a n key in n u r c h iq a r a boshlaydi. C h o ‘g ‘lanish lam pasi kolba (1) d a n (12. 2 - a ra sm ) b ir yoki ikkita c h o ‘g ‘lanish ch u lg ‘am lari (2 va 3) d a n , fokuslantiruvchi flanes (5) li sokol (7) d a n va k o n tak t (6) d a n iborat. Ikki c h u lg ‘am li c h o ‘g ‘lanish lam palari y aqinni va u z o q n i yoritish rejim larida ishlashini t a ’minlaydi. C h o ‘gManish lam palari yuqori h a r o ra tg a c h id a m li, kichik oMchamli boMishi va ingichka volfram s im d a n silindrli spiral shaklida o ‘ralishi lozim. O d a td a spiral 2300—2700°C g a c h a qiziydi. Sokol yoritish asbob p a tro n ig a la m p a n i qotirish u c h u n xizm at qiladi, u n d an tashqari tokni energiya m an b aid a n lam pani kontaktlariga yetkazish u c h u n h a m xizm at qiladi. L a m p a la r sokol lari shtiftli va flanesli boMishi m u m k in . Shtiftli sokol lam p alarid a (12.2- b va 12.2- d rasm lar) c h o ‘g ‘- 1 2 .2 - rasm . C h o ‘g ‘la n ish la m p a la ri: A - y o r u g ' l i k n i Y e v r o p a t i z i m i d a t a r q a t a d i g a n b o s h y o r i t i s h f a r a l a r i ; b - i k k i c h u l g ' a m l i s h t i f t l i l a m p a ; d - b i r c h u l g ' a m l i s h t i f t l i l a m p a ; e - b a r m o q s i m o n l a m p a ; f - s o f i t l a m p a ; 1 - s h i s h a k o l b a ; 2 , 3 —c h o ‘g ‘l a n i s h c h u l g ‘a m l a r i ; 4 - e k r a n ; 5 - f o k u s l a y d i g a n f l a n e s ; 6 - k o n t a k t l a r ; 7 - s o k o l . 306 lanish c h u l g la m la r in i shtiftlarga n isb a ta n a n iq jo y lash ish in i t a ’m in la sh qiyin. S h tiftli so k o l l a m p a n i p a t r o n d a b e lg ila n g a n h o l a t d a ish o n c h li tu t ib tu r is h n i t a ’m in la y o lm a y d i. S h u n in g u c h u n b u tu rd a g i la m p a la r y u q o ri t a la b la r q o ‘y ila d ig a n y o r itis h a s b o b la r id a q o ‘llan ilm a y d i. L a m p a la r vibratsiya va silkinish sh aroitida ishlaydi, sh u n in g u c h u n b a q u w a t boMishi lozim. L a m p a kolbasining sokolga m a h k a m la n ish i la m p a n i p a tro n g a o ‘rnatish va k erak boMsa olishda u n d a t a ’sir qiladigan kuchga chidashi kerak. U n d a n tashqari lam palar traktor va avtomobillarda ish davrida hosil boMadigan k uchlanish tebranishlarga chid am li boMishi lozim. C h o 'g M an ish la m p a la ri q u y id a g ic h a n o m la n is h i m u m k in : m asala n , A 1 2 - 4 5 + 4 0 . B u n d a A - a v t o m d b i l la m p a lig in i, 12 yoki 2 4 - n o m i n a l k u c h la n ish in i, 4 5 + 4 0 esa u z o q n i va y a q in n i yoritish u c h u n sarflaydigan q u v v a tn i Vt d a k o ‘rsatadi. A g a r l a m p a n o m l a n i s h id a M N harflari b o M s a o ‘t a i x c h a m l a s h g a n , S h a r f i b o M sa s o f i t g a o i d l a m p a h is o b la n a d i. YorugMikning Y evropa tizimi b o ‘yicha taqsim laydigan faralarda R 4 5+41 (12.2- a rasm ) turdagi yagona ikki c h u lg 'a m li sokol turdagi flanes la m p a la r qoMlaniladi. P o g ‘o n a shaklida tay yorlangan flanes d iam etri 22 m m boMgan sokolga k av sh a rlan g an . F la n e s sirtidagi ikkita ta y a n c h faradagi o p tik e le m e n tla r in i fokus m asofasi 27 va 22 m m boMgan lam p alarn i qoMlashga im k o n beradi. L a m p a u c h kontaktli sh tek er bilan jih o z la n ib kolodkalarga kiritiladi. X a lq a r o q o i d a l a r g a k o ‘ra S R t u r d a g i fa ra l a m p a l a r id a u z o q n i y o ritish u c h u n ta q a s i m o n s h a k ld a o ‘ra lg a n c h u l g ‘a m qoMlanilgan, y a q in n i yoritish u c h u n esa s ilin d rsim o n sh a k ld a ta y y o rla n g a n c h u lg ‘am q oM lanilgan. Y o r u g l i k n i Y e v r o p a t i z i m i b o ‘y i c h a t a r q a t a d i g a n l a m p a l a r d a ( 1 2 . 3 - a ra s m ) u z o q n i y o r itis h c h u l g ‘a m i (1) ni q a y ta r g ic h f o k u s id a j o y l a s h t ir il a d i. K ic h ik b u r c h a k o s t i d a t a r q a t il a d i g a n u z o q n i y o r itis h l a m p a s i, yorugMik d a s ta s in i c h u l g ‘a m n i k ic h ik o M c h a m la rid a n o lad i. C h u l g ‘a m yo y k o ‘r i n i s h d a b a ja r ilib g o r i z o n t a l te k is lik d a j o y l a s h tir ila d i. Yaqinni yoritadigan silindr shaklidagi chulg‘a m (2) uzoqni yoritadigan c h u lg ‘a m (1) ga nisbatan biroz o ld in ro q d a va optik o ‘q q a paralell h a m d a biroz b a la n d r o q joylashtiriladi. L a m p a la rn in g ishlash m u d d a ti ulam i rusum iga q a ra b 200 d a n 400 soatg ac h a tashkil qiladi. K uchlanish oshishi ularni ishlash m u d d a tig a salbiy t a ’sir k o ‘rsatadi. G a lo g e n la m p a la r 12.3- ra sm d a k o ‘rsatilgan. Bir c h u lg ‘am li N 1 (A K G 12-55) va N Z (A K G 12- 55-1) lam palari tu m a n g a qarshi faralarda qoMlaniladi, ikki ch u lg ‘am li N 4 (A K G 12-60+65) lam p alar bosh yoritish faralarda o ‘rnatiladi. Shuni aytish kerakki, galogen la m p a la r faqat konstruksiyasida qoMlash m u m k in boMgan faralarda o ‘rnatiladi. 307 Download 54.06 Kb. Do'stlaringiz bilan baham: |
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