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Westfalia Separator
46
Mineraloil Systems GmbH
2058-9001-101
/
0506
2.6
The regulating ring
(using oil purification as an example)
Function of the regulating ring
Optimum dewatering of oils containing water is only possible if the bowl is cor-
rectly adjusted to the difference in density between the oil and the water.
The regulating ring with the correct inner diameter, i.e. with the diameter that
corresponds to the density difference between the oil and water, should there-
fore be selected from the set of regulating rings (with different inner diameters)
supplied with the separator and fitted in the bowl.
The inner diameter of the regulating ring to be selected can be determined with
the aid of the diagram or by experiment. The rule of thumb is:
•
small
regulating ring for
heavy oil,
•
large
regulating ring for
light oil.
2.6.1 Determining the size of the regulating ring with the aid of the
diagram
(using oil purification as an example)
The diagram can be used to determine
–
the inner diameter of the regulating ring and,
–
if desired, the density of the oil
for a given separating temperature, provided that the density of the oil is known
at a temperature between 15
o
C and 90
o
C.
Example
Given:
– Density of oil at 20
o
C
ρ
oil 20
°
C
3
– Separating temperature
t
=
70
o
C
To be determined:
– Inner diameter of regulating ring
d
=
?
– Density of oil at 70
o
C
ρ
oil 70
°
C
=
?
Determined:
– Inner diameter of the regulating ring
according to the diagram
– Density of oil at 70
o
C
according to the diagram
ρ
oil 70
°
C
3
If no regulating ring with the determined inner diameter is available, a smaller
ring can be machined to the required size. Before doing that, however, check by
experiment whether the regulating rings furnished with the separator are ade-
quate for optimum dewatering.
Summary of Contents for OSD 6-91-067
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