Page:Steamturbinesap01moyegoog.pdf/205

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174 THE STEAM TURBINE

the rotor shell which forms the connecting passage to the right- hand low-pressure section. Arrows indicate in the figure the passage of the steam through the shell. When the steam is dis- charged from the last rows of low-pressure blades, it passes into FIG. 107. Section of Westinghouse Double Flow Turbine. the exhaust pipes of which there is one at each end-and then to the condenser. As there is practically no expansion in the impulse blades, these blade areas are made to increase only in proportion to the reduc- tion in steam velocity in each row of moving blades.