轮机英语21.ppt

Lesson 21 Oil Treatment
第21课油的处理
Both fuel oils and lubricating oils
require treatment before passing to the engine.
This will involve storage and
heating to allow separation of
water present, coarse(粗的)
and fine filtering to remove
solid particles and also
centrifuging.
The centrifugal separator(离
心式分油机) is used to separate
two liquids, for example oil and
water, or a liquid and solids as
in contaminated oil.
Separation is speeded up by the
use of a centrifuge(分油机) and
can be arranged as a continuous
process. Where a centrifuge is
arranged to separate two liquids,
it is known as a “purifier(分水
机)”.
Where a centrifuge is arranged
to separate impurities and small
amounts of water from oil it is
known as a “clarifier(分杂机)”.
The separation of impurities and water from fuel oil is essential for bustion. The removal of contaminating impurities from lubricating oil will
reduce engine wear and
possible breakdowns (损坏).
Centrifuging
A centrifuge consists of an electric motor drive to a vertical shaft on the top of which is mounted the bowl assembly(分离筒组件).
An outer framework(机壳)
surrounds the assembly and
carries the various feed and
discharge connections.