All About Engines
Forfatter: Edward Cressy
År: 1918
Forlag: Cassell and Company, LTD
Sted: London, New York, Toronto and Melbourne
Sider: 352
UDK: 621 1
With a coloured Frontispiece, and 182 halftone Illustrations and Diagrams.
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Steam Turbines 161
single row of blades. Steam is directed upon the
blades of the first wheel through three nozzles, one of
which is shown on the diagram. Each nozzle can
be opened or closed separately, so that the supply of
steam may be adjusted for one-half, or full load, or
over load. If the condenser is not in operation all
three nozzles
Fig. 97.—Section through governor
must be open
for full load.
At each end
of the casing
are glands to
prevent the
escape of
steam. The
bearings are
not shown;
on the left-
hand side
is a register-
ing block,
consisting of
a bearing fitting over a portion of the shaft provided
with ribs, and having similar ribs on its interior sur-
face to prevent endwise motion of the shaft. At one
end of the shaft is the safety governor, about which
something will be said presently, and there is a flexible
coupling connecting the turbine shaft with the shaft of
the electric generator, pump, or other machine which
it is intended to drive.
The construction of the blading is shown in
L