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Dec. 17, 1946.
n G, B, WARREN
2,412,848
TURBINE-GENERATOR
Filed Jan. 3. 1944
vu
頽V闥Ttor: A
Glenn B. Warren.
Patented Dec. 17, 1946
i
v
UNITED STATES PATENT GFFICE
2,412,848
TURBINE-GENERATOR
Glenn B. Warren, Schenectady, N. Y., assigner Yto
General Electric Company, ya corporation vof
New York
Application January 3, 1944, .,Serial'No. 516,874
6 Claims.
,
(Cl. 290-52)
1
2
' The present invention relates to turbine-gen-
tor l5 driven from the turbine and arranged in
erators and like machine sets or aggregates havalignment therewith ?lengthwise of the railroad
'ing two casings connected together to support the
car of vehicle i0. The generator �has a casing
end of one casing on Ythe adjacent end of the
�with 馻nges il' on each side rigidly secured
other casing. Such support may e accomplished 5 >to a support on the frame l2 by means including
by rigidly securing or hanging the adjacent casbolts lf3. The turbine has a casing l� with an in
ing ends together. In certain instances, as where
let chest ".?� adjacent the generator l5, The 駉w
the casings are subject during operation to conof elastic huid from the Ichest to the turbine is
siderable stresses or bending forces or misaligncontrolled by valve means 2l. The turbine has a
ment, a rigid connection between them may be lo rotor 22 with a shaft 255 -and a bucket wheel or
injurious to the safe operation of the machines.
wheels 2t secured thereto and in the present in
The object of my invention >is to provide an imstance integrally formed therewith. The shaft
proved construction and arrangement for sup25 is rigidly secured to the generator shaft by
porting the adjacent ends of two aligned machine
means of a coupling 25. rI'he exhaust end of the
casings on each other whereby the setting up of 15 turbine casing iii is connected to av condenser 2t
lstresses dueto such connection or support is sub籭n alignment with the turbine by means of a sub�
stantially avoided,
stantially cylindrical exhaust conduit 2� flanged
This is accomplished in accordance with'my invention by the provision of a ball and socket sup-
at its right-?hand end to the exhaust end of the
turbine casing iii and its left-hand end to a
port between the casings, the socket being formed
'by an end portion of one casing and the ball by
the adjacent end portion of the other casing.
Such arrangement constitutes a firm support between the casings and at the same time permits
limited angular movement between them.
For a consideration of what I believe to lbe
novel and my invention, attention is directed to
the following description and the claims appended thereto in connection with the accompanying
drawing.
In the drawing Fig. 1 illustrates an arrangement embodying my invention, and Fig. 2 is an
enlarged detail view of a part of Fig. l.
The invention is of particular significance in
connection 'with turbine-generators for ?mobile
power plants supported on railroad cars or like
vehicles. Such turbine-generators are of considerable length and arranged lengthwise of the sup
porting truck. When moving through a curve
20 铎anged inlet of the condenser 26.
The turbine-generator in the present example
is a three~bearing set, that
the rotors of the
Vgenerator and turbine are supported by three
bearings. A bearing 28 .is arranged to support
zo the outer end of the generator rotor on the gen
erator casing
in conventional manner` An
other bearing
is arranged between the turbine
and the generator to support the adjacent ends
of the two rotors, and a third bearing 3i? located
30 inthe exhaust conduit
supports the outer end
of the turbine rotor on the conduit
The bear
ing 29 has an outer spherically-shaped surface 3i
engaging a similarly shaped supporting ring 32
which in turn is supported by an annular bracket
:4,5
secured to,
the present instance integrally
formed with,
annular casing "ill which at its
left-hand end has a flange 35 secured to a flange
of the turbine casing i9 and circurnferentially
positioned r tive to the latter by radial key
or over a rough track and Aalso due to tempera- .m means
. The casing Zit broadly lis an extension
ture changes >the car and the turbine-generator
ofthe turbine cas-ing la and the turbine shaft 23
casings thereon are subject to considerable bendis supported on the extension 3i by the bearing
ing forces which would set up excessive stresses
fifi, which latter through the rigid coupling 25
if the adjacent ends ofthe ca?sings of the turbine
also acts
`a support for the generator shaft.
and the generator were rigidly secured together. 45
bearing at for supporting the shaft 23 near
The provision of yieldable or loose supporting
the exhaust end of the casing i9 is held on and
means, Asuch yas a ball and socket connection beenclosed by an inner casing
which in turn is
tween Vthe turbine and generator casings, howenclosed by and supported on an outer casing 3Q
ever, precludes the setting up of great .stresses in
located within the exhaust conduit i2? and held
the casings. More speci馽ally, the arrangement 5o and centered thereon by a plurality of circumfer
as shown in the drawing comprises a railroad car
entially spaced supports
Both casings
3i?
I0 having truck means l! and a frame l2 supare sealed to each other and to the turbine shaft
stitutes
ported ona afoundation
railroad track
or support
I3. Thefor
.frame
a turbinel2 con-
to
ed permit
to the the
atmosphere
annular space
and also
between
to preclude
te be sub�
_generator comprising a turbine I4 and a `genera-
stantial heat transfer from the elastic fluid in the
2,412,848
3
4
fluid to the turbine, means forming a ball and
socket connection between the adjacent ends of
the casings to support one casing on the other
casing so as to permit limited angular displace
ment between the casings without creating ex
42, thus forming a rigid support for the exhaust Ul cessive stresses therein, and a speed-governing
end of the turbine casing I9. The inlet end of
mechanism for controlling the valve means in
the turbine casing according to my invention is
cluding a speed governor driven from the exhaust
yieldingly or loosely supported on the adjacent
end of the turbine shaft, and means connecting
end of the generator casing i6 by means of a ball
the governor to the valve means.
In the and socket connection between them.
-2. In a mobile power plant, a car having a
present example the extension Srl of the turbine
frame of appreciable flexibility, and a turbine
casing I9 has an annular spherically-shaped
generator set arranged lengthwise on the frame
portion 43 engaging and supported on a socket
and including a generator having a iianged cas
formed by a spherically-s?naped portion d4 of an
ing of substantial axial length rigidly secured
end shield 5,5 of the generator casing I6. Thus
throughout its length to the frame and a turbine
the end of the turbine casing is loosely support
having a casing of substantial axial length with
ed on the adjacent end of the generator casing by
an inlet end adjacent the generator, means form
a ball and socket connection formed between
ing a two-point support for the exhaust end of
them. This permits each casing to move angu
the turbine on the frame, and means flexibly
larly about the center of the ball and socket con
supporting the inlet end of the turbine casing
nection without thereby setting up stresses in the
on the adjacent end of the generator casing so
other casing. The feet @i on opposite sides of
as to permit limited angular displacement be
the exhaust conduit ?Z1 together with the socket
tween the casings without creating excessive
44 near the inlet end of the _turbine casing broad
ly constitute a three-point support for the tur
stresses therein.
3. A turbine-generator designed and construct
bine casing.
ed to be mounted on a foundation having ap
The ball and socket connection completely en
preciable flexibility including a turbine having a
closes the shaft 23. Therefore the speed-govern
casing and a rotor with a shaft, a generator hav
ing mechanism for controlling the valve means
ing a casing and a rotor with a shaft aligned
2| is operated from the other end of the shaft
with and rigidly connected to the turbine shaft,
23 enclosed within the exhaust conduit 2l. In
a three-bearing support for the shafts including
the present example a vertical duct 縤5 is formed
separate bearings at the opposite ends of the
between an opening of the exhaust casing 2l and
shafts and a single bearing for` supporting ad
an opening in the outer casing 39. A speed govjacent ends of the shafts, spherical self-aligning
ernor d1 is accommodated in the ductd� and
supporting means for supporting said single
driven from the shaft 23 by a worm gear d8. The
bearing on an end portion of one of the casings,
governor is connected to the left-hand end of a
said casing end portion having a spherically
governor beam �which has an intermediate
shaped portion, and a spherical support formed
point held on a fulcrum 5t and a right-hand end
connected to actuate a conventional hydraulic 40 on the other casing for supporting said portion.
exhaust conduit 21 to the interior of the inner
casing 38 and to the bearing 3Q. The exhaust
conduit 2l has opposite fianges or feet el rigidly
secured to the frame l2 by meansincluding bolts
governing mechanism 5l .for positioning the valve
e. A turbine generator designed and construct
means 2l in response to speed changes of the
turbine-generator. The duct 縤6 also serves to
accommodate an oil pump driven from the worm
gear 48 for supplying oil under pressure to the
ed to be supported on a foundation of appreciable
fiexibility comprising a turbine and a generator
hydraulic governing mechanism 5i and to the
bearings.
Thus, with my invention I have accomplished
an improved construction and arrangement of
turbine-generators and like machine sets having
aligned shafts securely fastened together and
each having a casing of appreciable axial length,
the inlet end of the turbine casing being located
adjacent an end of the generator casing and
forming a ball and socket connection therewith
to support the end cf one casing on the end of
the other casing so as to permit limited angular
displacement between the casings without creat
cated between the sets and held on one of the
ing excessive stresses therein, a cylindrical ex
haust conduit extending axially from the ex
haust end of the turbine casing, the turbine hav
casings, which latter together with a portion of
ing a rotor with a shaft extending into the ex
supported by three bearings of which one is lo
haust conduit, bearing means disposed in the
tion. With such arrangement misalignment of
exhaust conduit for supporting the turbine shaft,
a sealed housing supported within the exhaust
the bearings and bending forces acting on the
conduit and enclosing the bearing, a duct formed
casings are taken care of by the flexible connec
through and sealed to the conduit and the hous
tion between the castings.
Having described the method of operation of (il) ing, and accessory actuated means driven from
the turbine shaft and at least partly disposed
my invention, together with the apparatus which
I now consider to represent the best embodiment
in said duct.
5. A turbine-generator designed and construct
thereof, I desire to have it understood that the
ed to be mounted on a foundation having ap
apparatus shown is only illustrative and that the
preciable flexibility comprising a generator hav
invention may be carried out by other means.
ing a casing of substantial axial length arranged
'What I claim as new and desire to secure by
to be rigidly secured to the foundation through
Letters Patent of the United States, is:
the other casing forms a ball and socket connec
1. A turbine-generator designed and construct
ed to be supported on a foundation having ap
preciable flexibility comprising a turbine and a
generator having aligned casings with the inlet
end of the turbine casing adjacent one end of
the generator casing, the inlet end of the turbine
casing having a valve chest with valve means
in the chest for controlling the flow of elastic
out its length, a multi-stage turbine with a cas
ing of substantial axial length having a high
pressure end of comparatively small diameter
axially aligned with and closely arranged to one
end of the generator casing and a comparatively
large diameter low pressure end disposed remote
ly from the generator casing, means constructed
and arranged to provide a two-point support for
2,412,848
the turbine casing on the foundation at a loca
tion remote from the generator, and means pro
viding a third point of support for the high pres
sure end of the turbine casing on the adjacent end
of the generator easing, said last-named means
including a ball and socket joint permitting lim
ited angular displacement between the turbine
and generator casings without creating excessive
stresses therein.
6. A turbine~generator designed and construct�
ed to be mounted on a foundation having ap
preciable flexibility comprising a generator hav
ing a casing of substantial axial length arranged
to be rigidly secured to the foundation through
out its length, a multi-stage turbine with a cas
ing of substantial length having a high pressure
end of comparatively small diameter axially
aligned With and closely arranged to one end of
the generator casing and a comparatively large
diameter low pressure end disposed remotely from
the generator casing and a cylindrical exhaust
casing extending axially from the low pressure
end of the casing, means constructed and ar
ranged to provide a two-point support for the
turbine casing on the foundation at a location
remote from the generator, and means providing
a third point of support for the high pressure
end of the turbine casing on the adjacent end of
the generator casing, said last-named means in
cluding a ball and socket joint permitting limited
angular displacement between the turbine and
generator casings Without creating excessive
stresses therein, the turbine having a rotor with
a shaft supported in a 駌st bearing Within the
ball and socket joint at the generator end and
in a second bearing within the exhaust conduit
at the low pressure end of the turbine, a sealed
housing Within the exhaust conduit and enclos
ing said second bearing, walls forming a duct
through and sealed to the conduit and the hous
ing, and turbine accessory actuating means
driven from the turbine shaft and disposed in
said duct.
GLENN B. WARREN.
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