close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2121643

код для вставки
.Fune 21, 1938.
2,121,643
A, R’ SMITH
ELASTIC FLUID TURBINE ARRANGEMENT
Filed Dec. 19, 1935
Inventor‘ :
Arthur R. Smith
M
n gHis
?an/“75x9
Attorney
2,121,643
Patented June 21, 1938
1'
3 UNITED STAT
PM‘ OFFI'E
2,121,643
ELASTIC‘ FLUID TURBINE ARRANGEMENT
Arthur R. Smith, Schenectady, N. Y., assignor to
General‘ Electric Company, a corporation of
New York
Application December‘ 19, 1935, Serial No. 55,228
4 Claims. (C1. 60-95)
The present invention relates to elastic ?uid
turbine arrangements in which a turbine includ
ing a condenser are provided for driving an elec
tric generator or like machine.
G1
The general object of the invention is to pro
vide an improved construction and arrangement
of such condenser turbines whereby they may be
built more economically and operated at higher
e?‘lciency.
For a consideration of what I believe to be novel
and my invention, attention is directed to the
following description and the claims appended
thereto in connection with the accompanying
drawing.
15
.
In the drawing, Fig. 1 illustrates a turbine ar
rangement embodying my invention, and Fig. 2
illustrates a sectional view along line 2-2 of
Fig. 1.
In the present instance I have shown a mer
cury vapor turbine arrangement because my in
vention is of particular signi?cance in connection
with this type of turbines in which special at
tention need be paid to the sealing of the turbine
casing. In addition, di?culties are often encoun
25 tered in handling the large amount of vapor’
exhausted from mercury vapor turbines, neces
sitating large exhaust hoods or casings connecting
the turbines to the condensers. These difficulties
are overcome in accordance with my invention by
the provision of an arrangement in which the
turbine is disposed substantially entirely within
the condenser so that mercury vapor discharged
from the last turbine bucket wheel may flow free
ly, that is, without any obstruction into the con
denser.
The arrangement shown in the drawing com
prises a turbine l 0 disposed substantially entirely
within the turbine condenser‘ I l and driving a ma
chine, in the present instance an electric gen
erator 12. The condenser II forms a box-shaped
structure with an outer casing I3 having arms or
?anges l4 welded thereto on each side and loosely
engaging supports 15 resting on a foundation 16.
The supports l5 are preferably in the form of
a hollow tubes having ends projecting into de
pressions l1 and 18 in the arms I4 and the
foundation I3 respectively. This form of sup
1
port permits slight movement of the condenser
casing due to expansion and contraction without
setting up undesirable stresses. The condenser
is of the surface type including a lower header [9
and an upper header 20 disposed within the outer
casing and projecting through the front and rear
walls thereof. The headers are connected by
55 banks of cooling tubes 2|. The tubes are bent
outwardly to form a large central space 22 for
accommodating the entire or a substantial por
tion of the turbine structure. A partition 23
separates the condenser space in an upper space
in which condensation. takes place and a lower or
bottom space to which condensate is conducted
through an opening or openings 24 in the parti
tion. A conduit 25 is connected to the bottom of
the condenser for discharging condensate there
from.
The turbine structure includes an outer casing
with an integrally formed front or inlet section 26
and an exhaust section 2'! having upper and lower
halves united by means of bolts 28. The inlet
portion 23 is funnel-shaped and has an outer
wall 29 with a central, axial inlet 30 and an inner
wall 3| substantially concentrically spaced from
the outer wall 29 to form an annular channel 32
for conducting elastic fluid, in the present in
stance mercury vapor, to an annular row of noz
zles 33 disposed ahead of a bucket wheel 34. The
turbine rotor is secured to an overhung shaft
portion supported on a bearing 35 intermediate
the turbineand the generator l2. A cylindrical
element 36 provided with a ?ange 3'1 surrounds
the wall 29 of the inlet casing section and is
secured thereto. The ?ange 3'! is fastened by
means of bolts 38 to a ring 39, which latter is
welded to the condenser casing. Thus, the
?anged cylindrical element 36 represents in sub
stance a means for supporting the front section
of the turbine casing. The rear section of the
turbine casing is secured by means of bolts 40 to
asupport 41, which latter has a ?ange 42 fas
tened by means of bolts 43 to a ring 44 welded to
the condenser casing. The support 41 is also se
cured by a structure 45 to a casing or outer wall 46
of the generator 12. This arrangement permits
easy assembly and disassembly thereof. After
the connection between the condenser and the 40
turbine is removed by disassembling the bolts 38
and 43, the entire turbine weight is supported
through the structure 45 by the generator 12.
The generator itself rests on a foundation 41.
The support is preferably effected through the in
termediary of rolls 48 or like friction bearing
elements so that the generator l2 together with
the turbine [0 may be easily moved away from
the condenser after removal of the bolts 38 and 43.
When installed, the rolls are held in position by O! O
any suitable means, such as blocks or wedges 41w.
In order to eliminate any leakage of elastic
fluid along the bolt connections special sealing
means are provided on the front and rear portion
of the turbine casing. vThe means for sealing 55
2
2,121,643
the connections by the bolts 38 include two con
centrically spaced rings 49 and 50 welded to the
turbine wall 29 and the condenser casing respec
tively and having outer edges integrally united by
means of a channel-shaped plate 5| Welded there
to. The rings 49, 5D with the plate 5| form a
space 52 for receiving any leakage along the bolts
and along the adjacent surfaces of the ?ange 3T
and the ring 39. The connection between the
support 4| and the condenser casing is similarly
sealed by means of concentrically spaced rings
53 and 54 welded to the condensercasing and a
rear plate of the support respectively. The outer
edges of the rings 53 and 54 are united by a
channel-shaped member 55. Disassembly of the
sealing structure is easily accomplished by cut
ting the welded edges between the sealing rings
and the corresponding channel plates. There
after the bolts 38 and 43 may be removed and the
turbine moved out of the condenser casing by
moving the generator away ‘from the condenser.
The condensing itself is very effective in this ar
rangement in that the last bucket wheel exhausts
over its entire area directly into the condenser.
The latter forms in the present instance, in known
manner, a boiler. The cooling ?uid consists
preferably of water conducted to the lower
header I9 through an inlet conduit 56. The
Water as it ‘passes ‘from the lower header to- the
30 cooling tubes into the upper header is heated
turbine casing being disposed substantially en
tirely within the condenser, said condenser hav
ing an outer casing, lower and upper headers
extending axially with the turbine and a plurality 10
of cooling tubes connected between the headers
and embracing the turbine.
2. An elastic ?uid turbine arrangement includ
ing the combination of a condenser having an
outer casing, a lower and an upper header within
the casing, curved cooling tubes connected be
tween the headers to de?ne a large central space,
an elastic ?uid turbine having an inlet portion
sealed to the condenser casing and a last bucket
wheel disposed within and exhausting directly
into the central space, and means for support—
ing the turbine at least partly on the condenser
casing.
'
'
3. An elastic ?uid condensing turbine arrange
ment including the combination of a box-shaped
casing structure, lower and upper headers with
banks of tubes connected between the headers
disposed- within the casing, the tubes being
curved in opposite directions to de?ne a ‘large
central space, and a turbine having a casing 30
and partly evaporated, the steam being dis
disposed within said central space and supported
charged through an outlet conduit 57 secured to
on . the casing. structure.
With my invention I have accomplished an im
proved construction and arrangement of con
4. An elastic'?uid turbine arrangement includ
ing the combination of a multi-stage elastic ?uid
turbine having aoasing with an inlet for receiv
densing turbines for driving, generators or like
machines. Certain features of the arrangement
ing elastic ?uid, and a condenser for're'ceiving
and condensingexhaust ?uid discharged from the
described above are covered by the Patent No.
turbine, said condenser comprising an upper and
a lower header axially arranged above and below
the turbine respectively, a bank ‘of tubes disposed 40
on opposite sides of and embracing vthe turbine,
said tubes being curved outward and. connected
between the headers, and a condenser casing-en
closing ‘the headers and. the tubes .and‘supporting
the upper header.
'
>
2,057,561 of E. D. Dickinson on the same sub
ject matter and the applicationof which was '?led
on the same day as this present application.
Having described the method of operation of
my invention, together with the apparatus which
I now consider‘to represent the best embodiment
.4 c.
What I claim as new and desire to secure by
Letters Patent of the United States is:
1. An elastic ?uid turbine arrangement in
cluding the combination of a multi-stage elastic
?uid turbine having a casing, a machine driven by
the turbine, and a condenser for the turbine, the
thereof, I desire to haveit understood that the
apparatus ‘shown is-only illustrative and that the
invention may be carriedout by other means.
the turbine casing.
'
.
ARTHUR R. SMITH.
Документ
Категория
Без категории
Просмотров
0
Размер файла
331 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа