Page 260 - Steam Turbines Design, Applications, and Rerating
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Reaction vs. Impulse Type Steam Turbines 239
Figure 12.17 Water-steam mixing arrangement used in low-speed water
wash systems. (Dresser-Rand Company, Wellsville, N.Y.)
The washing may be continued until conductivity measurements of
the condensate or exhaust steam indicate that no further deposits are
being dissolved. Additionally, it is appropriate to note that the trip-
throttle valve should be checked to be certain it is operating satisfacto-
rily since washing may not thoroughly clean deposits from this valve
and that if carryover deposits are not also cleaned from the piping
between the boiler and the turbine, this carryover may be deposited in
the turbine in a very short period after washing.
Figure 12.18 Full-speed water wash arrangement. (Dresser-Rand Company, Wells-
ville, N.Y.)
