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Grundfos CR 90 - Вала; Минимальное Давление На Входе; Указание; Температура Рабочей Жидкости Для Уплотнения

Grundfos CR 90
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 (RU)
235
5.2  
    
    
  . 333.
5.3    
    

CR, CRI, CRN  1s  20 CR, CRN  32  150
. 3    
  
 CRI CRN    H 
  - , HxxE, 
  (CIP)    150 °C
  15 .
 CR, CRI, CRN   
   
 120 °C.
5.4    
. 4     CR
   ()  
  :
H=p
b
x 10,2 - NPSH - H
f
- H
v
- H
s
p
b
=   .
    
 1 .
  p
b
 
 .
NPSH =    , .
.
   NPSH   331 
   .
H
f
=       
    
.
H
v
=     
, . . E  . 336. t
m
= 
.
H
s
=   =  0,5 . .
   "H" ,  
     "H" . .
   "H" , 
     "H" . . 
  ""    
    .

p
b
= 1 .
 : CR 15, 50 .
: 15
3
/.
NPSH ( . 331): 1,1 . .
H
f
= 3,0 . .
 : +60 °C.
H
v
( . E, . 336): 2,1 . .
H = p
b
x 10,2 - NPSH - H
f
- H
v
- H
s
[ . .].
H = 1 x 10,2 - 1,1 - 3,0 - 2,1 - 0,5 = 3,5 . .
 ,      
   3,5 . .
   : 3,5 x 0,0981 = 0,343 .
   : 3,5 x 9,81 = 34,3 .
5.5    
  . 334   
   .   
       
     ,
  . A, . 333.
   ,  1,5 
 ,   . B, . 334.
Указание
   
   
 .
Указание
    
 ,  .
TM03 8853 4907

 


[]

 
[°C]
HQQE 0,37 - 45 -40 - 120 °C
HBQE 55-75 0-120 °C
HQQV 0,37 - 45 -20 - 90 °C
HBQV 55-75 0-90 °C
Указание
   
+120 °C    
   .
-60 -40 -20 0 20 40 60 80 100 120 140
0
5
10
15
20
25
30
35
p [bar]
HQQE/V
HBQE/V
H
Q
Q
E
H
Q
Q
E
H
B
Q
E
H
Q
Q
V
H
Q
Q
E
t [°C]
TM02 0118 3800
Hv
H
NPSH
Pb
Hf

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