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ECOLOGICAL PROCEDURE OF WATER SEPARATION FROM TRANSFORMER OIL

SOFIJA MILOVANOVIĆ

DR. NENADA PARENTE 10

INTRODUCTION

A device for carrying out the experiment is as simple, as the
In this project is described a practical solution of making structure of oil pit. It is composed of a glass container with a
installation which allows separation of water from the mixture depth about 180 mm in which is placed on the wall a glass
with the transformer oil in the oil pits of large substation. pipe in the form of the cyrillic letter "Г". The lower end
Using physical and chemical properties of transformer (opening) of the pipe is about 5-6 mm from the bottom and
mineral oil and the basic laws of hydrostatics, there is the top at about 45 mm from the top is passing through the
presented the solution of installing the outflow pipe which wall outside of container- which is a practical imitation of
ensures that the oil pits, although they are always full of solution of the oil pit.
water, at any time can receive and retain, for any reason
spilled transformer oil.

The experiment is carried out by pouring water and oil in a
container in several variants (with different ratios of water and
DESCRIPTION OF FUNCTIONING OF oil).
OIL PIT This experiment demonstrated that in none of these cases
hasn’t flowed out oil of the container, but only water.

The principle of functioning of oil pit is based on the fact that
mineral transformer oil, as a liquid with lower density, floats RESULTS OF EXSPERIMENT
on the water surface. So, it is necessary to design the
installation which will help water, which is located below the h v (mm) 137 107 84 61 25 0
oil, to throw out, but retain the oil in the pit. h u (mm) 0 34 62 88 128 157
The following properties of the mineral transformer oils allow Δh (mm) 0 4 8 11 16 20
us to achieve this:
• that its density is lower than density of water, and that is CONCLUSION
0,800 to 0,900 kg/dm³, and the density of water is 1 kg/dm³
• that it doesn’t dissolves in water, and By using this solution, separating water from the transformer
• that it doesn’t coalesce with water. oil in oil pits, it would be a simple and relatively inexpensive
way to prevent flowing large amounts of transformer oil in the
On these properties of transformer oil and the previously environment of substations and causing huge environmental
described principles of hydrostatics is based solution with damages.
wich ,as a natural process, under the influence of gravity,
automatically throw out water, and keeps the oil in the oil pit. LITERATURE

- Milićević S., Mehanika fluida- teorija i praksa,
Mašinski fakultet, Beograd (1998)
- Friš i Timorjev, Opšti kurs fizike, Zavod za izdavanje
udžbenika Socijalističke Republike Srbije, Beograd
(1969)
- Milovanović M., Praktično rešenje ekoloških uljnih
jama u transformatorskim stanicma, JUKO CIGRE,
Beograd (2005)