pa1778data.pdf

U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 84)
each of its ends, is located inside of the stator shell. The
drum carries rows of stationary stator blades around its
circumference along its entire length. The blades direct the
incoming air as it passes through the rotor. Located at the
bottom center of the compressor casing at its southern end is an
84" diameter flanged air intake connection. Air is drawn into
the compressor through a hooded air intake pipe which runs
vertically alongside the outside south wall of the building at
its western end. Located at the bottom center of the compressor
casing at its northern end is a 60" diameter flanged air
discharge connection. The compressed air is taken from this
connection through a 60" diameter pipe which is run horizontally
along the outside of the building's south wall to a pipe bridge
where it is connected to the cold blast main.
d. Drive Shaft: The 7" diameter drive shafts from the
turbine and compressor are connected together at the center of
the turboblower by a flexible coupling.
14. Turboblower Number Four Lubrication System: The
lubrication system for turboblower number four is located on the
floor of the building just east of the compressor. Manufactured
by the Bowser Company of Fort Wayne, Indiana, it consists of an
800 gallon oil tank, an oil cooler, and a 3/4 hp motor connected
to a oil recirculating pump.
Installation Date: 1962.
15. Turboblower Number Four Surface Condenser: A 30,000 sq.
ft. capacity Elliott surface condenser is bolted to the exhaust
steam connection located on the underside of the turbine casing.
Laid out on a north - south axis, its centerline is located
approximately 12 , -0" above the floor of the building. The 27'-3"
long x approximately 10*-0" diameter condenser consists of a cast
iron shell which encloses a large number of 20'-3" long x 1/4"
diameter tubes. Located on the eastern and western sides of the
condenser at its northern end are a 3 0" diameter flanged inlet
and a 30" diameter flanged outlet connection which are used for
circulating service water through the tubes. Located on the
underside of the surface condenser shell near its center are two
4" diameter flanged condensate removal connections.
Installation Date: 1962.
a. Air Ejectors: Two Elliott steam jet air ejectors are
connected to the eastern side of the surface condenser near its
centerline. The 9 7/8" long ejectors are laid out vertically.
Each ejector has a 1/2" diameter threaded steam inlet connection
at its lower end and a 1 1/2" diameter threaded discharge
connection at its upper end. Each ejector is connected to the
condenser by a 1" diameter threaded suction inlet. The