The Horizontal Steam Turbine For Stationary Plants 1920
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When starting up a new turbine for the
first time, there are always present in the
circulating system impurities of many kinds,
such as core sand, scale, cotton waste, etc.
It is, therefore, good practice after running
the turbine for two or three weeks, to remo ve
the entire supply of oil from the system and
recharge it with new oil.
The oil taken out should be allowed to
rest in a large tank, or in barreis, to separate
it from the impurities. The separated good
oil can then be used as “make up” for the
turbine.
Should the charge of oil first removed
from the turbine be badly affected by ab-
normal quantities of impurities, the oil should
be heated and, after separation from the
bulk of impurities, passed through a good
filter before use.
Adding New Oil
Where little or no water enters the circula-
tion system and where there is practically
no waste or leakage of oil, so that the amount
of new oil added to the system per week is
very small, the oil will gradually become
darker in color.
Where incorrect oils are in use, a dark
deposit will be thrown down throughout the
system, upon the addition of a new charge
of oil, due to the action of the old oil on the
new; and more particularly is this the case
with heavy oils than with light oils.
A correct high grade oil, when used in the
circulation system of a steam turbine under
normal conditions of operation, will demand
only small adclitional quantities of “make up”
oil to insure economical and continuous
service.
The correct high grade oils separate quickly
from impurities and will not break down
under normal working conditions. They will
reduce friction to a minimum, prevent
high bearing temperatures and provide a
greater margin of safety.
The “make up” for lost oil, due to leakage
and vaporization, will vary according to the
size and operating conditions of the turbine;
and when correct oils are used this replace-
ment is usually sufficient to keep the oil in
satisfactory working condition for a long
time.
When, however, the limit of the oil’s
capability has been reached, entire replace-
ment with fresh oil is recommended.
In reviewing the various causes of the for-
mation of deposit, it will be observed that
decomposition of the oil is invariably fol-
lowed by a darkening in color and an increase
in the percentage of acidity.
Therefore, both these features can be taken
as standards by which to judge the service
value of the oil.
D T E. Oils
FOR TURBINE LUBRICATION
DOMESTIC BRANCHES
DETROIT, MICH.
Telegraph Bldg.
INDIANAPOLIS, IND.
Merchants’ Bank Bldg.
BOSTON, MASS.
49 Federal Street
MINNEAPOLIS, MINN.
Rand Bldg.
NEW YORK, N.Y.
61 Broadway
PITTSBURGH, PA.
Fulton Bldg.
CHICAGO, ILL.
Fisher Bldg.
KANSAS CITY, KAN.
Riverview Bank Bldg.
PHILADELPHIA, PA. *
Brown Bros. Bldg.
DES MOINES, IA.
Shops Bldg.
FOREIGN OFFICES IN PRINCIPAL CITIES THROUGHOUT THE WORLD
VACUUM OIL COMPANY
New York, U. S. A.
Specialists in the Manufacture of High Grade Lubricants for every Class of Machinery—Obtainable Everywhere in the World
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