11
The pumping unit has the task of producing compressed air at high pressure (200-300 bar) and purifying
it by means of the decantation and filtering systems until it reaches a level of purity equal to or higher
than the limits set by the standards DIN 3188 - UNI EN 132 - CGA/E, or to increase the pressure of the
gas inhaled (only inert - non-explosive gases).
This unit consists of the following components (Fig. 5-6):
5
The intake air contains a certain degree of humidity according to atmospheric conditions. During the
compression and subsequent cooling, the humidity condenses and together with the particles of lubricating
oil forms a milky white emulsion that precipitates into the separators.
The compression diagram is included in chapter 13.
6
Technical description
2 . 2
2 . 2
2 . 2
2 . 2
2 . 2
Description of the pump unit
Description of the pump unit
Description of the pump unit
Description of the pump unit
Description of the pump unit
N°
Description
N°
Description
1
Intake filter
12
2
nd
stage safety valve
2
1
st
stage head
13
Monobloc
3
2
nd
stage head
14
Filter-holding bracket
4
3
rd
stage head
15
Fan
5
1
st
stage cylinder
16
Oil cap
6
2
nd
stage cylinder
17
Final condensate separator
7
3
rd
stage guiding cylinder
18
Condensate separator between stages
8
1
st
-2
nd
stage cooling pipe
19
Condensate discharge connection
9
2
nd
-3
rd
stage cooling pipe
20
Maintenance valve
10
Final cooling pipe
21
Pipe-fastening bracket
11
1
st
stage safety valve
22
3
rd
stage or final safety valve
Table 1
Содержание MCH 13/ET
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