4-rasm. Uch g’ildirakli transformator.
a-ish g’ildiraklarining joylashish sxemasi; b-lapatkalardagi tezliklar parallelogrammi; 1-
yetaklovchi val; 2-nasos g’ildiragi; 3-reaktor; 4-turbina g’ildiragi; 5-yetaklanuvchi val.
Gidratransformatorning keltirilgan xarakteristikasi (5-rasm, b) uning turbina va nasos
g’ildiraklari aylanishlari sonini nisbatining qiymatini o’zgarishiga asosan momentlar
koeffisiyentini, transformasiya koeffisiyentini va f.i.k ni o’zgarishini ifodalaydi. Grafikdan
ko’rinib turibdiki uzatishlar soni oshgan sari transformasiya koeffisiyenti kamayadi, moment
koeffisiyenti ham kamayadi, f.i.k. esa dastlab oshib boradi va ma’lum qiymatga yetgandan
so’ng yana kamaya boshlaydi.
5-rasm. Gidrotransformator xarakteristikasi.
a-tashqi, b-keltirilgan
Transformasiya koeffisiyenti, K
Н
Т
М
М
К
=
; (7-22)
Gidrotransformatorning f.i.k.
i
К
n
M
n
M
N
N
H
H
T
T
H
T
=
⋅
⋅
=
=
η
; (7-23)
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MUNDARIJA Bet
1. Suyuqliklarning gidrostatik bosimini o’rganish va gidrostatik paradoksni
tajribada kuzatish
._______________________________________ 5
2. Gidrostatik mashinalarni o’rganish.________________________________ 10
3. Suyuqliklarning oqim harakatini o’rganish. pito naychasi va boshqa
asboblar yordamida oqim tezligini o’lchash._________________________ 11
4.
Suyuqlikning
harakat rejimlarini o’rganish. _________________________ 13
5.
Markazdan qochma nasoslarni o’rganish. ___________________________ 16
6.
Hajmiy nasoslarni o’rganish. _____________________________________ 18
7.
Gidrouzatmalar. ________________________________________ 23
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.
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