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Патент USA US3065926

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Nov. 27, 1962
3,065,916
E. F. KURZINSKI
FLUID TRANSFER DEVICE
Filed May 3, 1960
2 Sheets-_Sheet 1
INVENTOR.
EDWARD F. KURZÍNSKÍ
BY
A
°
Ma ~g W
A TTORNE YS
Nov. 27, 1962
E. F. KuRzlNsKl
3,065,916
FLUID TRANSFER DEVICE
Filed May 5. 1960
2 Sheets-Sheet 2
INVENTOR.
EDWARD F. KuRzlNsxl
.A TTOÈNEYS
United States Patent Y
ÜÜCÉ
i.
3,065,916
FLUÃE) TRANSFER DEVEQE
Edward F'. Kurzinsiri, Allentown, Pa., assigner, by mesne
assignments, to Air Products and Chemicals, fue., Tren
lertown, Pa., .a corporation of Delaware
Fiied May 3, 1960, Ser. No. 26,529
2 Claims. (Cl. 239-132)
This invention relates to improvements in fiuid transfer
devices and more particularly to devices for introducing
fluid into a high temperature reaction zone.
Fluid transfer devices may be used for introducing a
fluid, such as oxygen, into the combustion zone of a
metallurgical furnace. For example, in the steel industry,
oxygen is introduced into metallurgical furnaces including
open hearth furnaces, converters, and electrical furnaces
to increase steel output without incurring major capital
investment. Efficient performance is obtained by blowing
the oxygen directly onto the molten bath and for this pur
assists
Patented Nov. 27, i962
2
vention. It is to be expressly understood, however, that
the drawings are designed for purposes of illustration and
not as a definition of the limits of the invention, reference
for the latter purpose being had to the appended claims.
ln the drawings, in which similar reference characters
denote similar elements throughout the several views:
FIGURE l is a cross-sectional View of a ñuid transfer
device embodying principles of the present invention;
FIGURE 2 is a view in section along the line 2-~2 of
FIGURE l;
FIGURE 3 is an end view of the device shown in FIG-
URE l illustrating the discharge end of the device with
the closure removed;
FÍGURE 4 is a view in cross section of the discharge end
portion of a fluid transfer device constructed in accordance
with another embodiment of the present invention;
FÍGURE 5 is a view in section along line 5_5 of
FIGURE 4;
FIGURE 6 is a view in cross section of the discharge
pose a fluid transfer device, sometimes referred to as a 20 >end portion of a fluid transfer device constructed in ac
lance, is extended within the furnace with its discharge end
cordance with a further embodiment of the present in
in close proximity with the surface of the bath. in opera
vention; and
tion, the transfer device may be subject to temperatures in
FÍGURE 7 is an end view of the device shown in
excess of 4000° F. and adequate cooling of the device is
FIGURE 6.
necessary in order to maintain the process and obtain an 25
With reference to FIGURES 1, 2 and 3 of the draw
economical life span of the device. Also, it is advan
ings, a fiuid transfer device is shown therein including
tageous to direct the oxygen onto a large area of the bath
a hollow inner member itl defining a passageway ilî
while utilizing the smallest possible number of devices.
located within a hollow outer member l2 in overlapping,
There are a number of ñuid transfer devices presently
spaced relation therewith to provide an intervening cham
in use for introducing oxygen into metailurgical furnaces. 30 ber t3. 'the members
and i2 may be of circular
These devices are generally fabricated from three con
vcross-section and positioned in concentric relation to
centrically spaced tubes, the oxygen being passed through
provide a ci amber f3 of annular cross-section as shown
the innermost tube and cooling water being directed in~
`in the drawings. A piurality of eiongated hollow mem
wardly through one of the annular spaces about the
bers iii, t5', lo, i?, iii, and tät, providing passageways
center tube and outwardly through the remaining annular 35 E0, Zi, 223, 23, 2li», and 25, respectively, are located in
space. One of the disadvantages of the prior devices is
»the chamber i3, the eiongated members being spaced
the diñiculty of controlling and interrelating water volume
from each other and extending longitudinally of the
`and velocity as a consequence of the difference in cross
sectional arcas of the spaces provided for inward and out
inner and outer members itt and 12. if desired, the
hollow elongated members may be of circular cross
ward ñow of cooling water. Furthermore, the problems 40 section, positioned in equaliy spaced relation in the
presented by prior devices become more severe when a
plurality of discharge nozzles are used to increase the area
chamber 13, and in contact with or secured to the
outer surface of the inner member l@ as shown in the
of the bath impinged upon by the oxygen.
drawings.
1t is therefore an object of the present invention to pro
vide a novel fluid transfer device for operation under
portion 25 and an inner end portion Z7 connected in
`high temperature conditions.
Another object is to provide a iiuid transfer device in
cluding a novel cooling arrangement which eliminates
hollow outer member l2 includes an outer end
end~to-end relation, the outer end portion Z6 including
soaced coolant inlet connection 2S and coolant outlet
connection
The outer end portion Z6 inwardly -of
the outlet connection Z9 is adapted to cooperate with
Still another object is to provide a iiuid transfer device 50 structure not shown for supporting the iiuid transfer de
of the foregoing character including a plurality of dis
vice in the wall or roof of the furnace with the inner
charge nozzles.
end portion Z7 extending into the furnace. The inner
A still further object of the present invention is to pro
end portion Z7 may have a wall thickness less than
vide a fluid transfer device of the multiple nozzle discharge
the wall thickness of the outer end portion Zo and may
type provided with a novel cooling arrangement for main 55 be constructed of material different from the material
coolant velocity control problems.
taining efñcient cooling in regions of the device subject
to high temperatures.
of the outer end portion and may also be made up of `a
plurality of sections such as sections 3d and 31. The
The above and other objects of the invention are
achieved by the provision of a fluid transfer device includ
various sections of the inner end portion may be joined
together and the inner end portion may be joined to the
ing a hollow outer member and a hollov»l inner member
outer end portion by any convenient means such as by
located within the outer member in overlapping relation
ship with the outer surface of the inner member spaced
brazing or welding, for example. The unconnected end
of the portion 2'7 which extends furthermost into the
from the inner surface of the outer member to define a
furnace terminates in a dome-shaped closure 32 which
may be welded or braaed to the section 3f. The inner
chamber extending substantially throughout the overlap
ping region in which a plurality of spaced elongated hol 65 >hol-tow member liti extends throughout the length of the
low members are located, the hollow inner members being
outer hollow member .it with one end 33, its innermost
connected to a plurality of nozzles at the discharge end
end, tern mated in spaced relation with the dome 32 and
of the device.
closed by member 3d and with its other or outermost
The foregoing will be more fully understood from the
end 35 spaced beyond the outer end of the portion 2(
following detailed description considered in connection 70 and terminated in a fluid inlet connection 36.
'
with the accompanying drawing which discloses a ñuid
The elongated hollow members extend throughout the>
Vtransfer device embodying the principles of the present in
length of the inner end portion Z7 `and throughout a
3,065,916
3
portion of the outer end portion 26 terminating in ends
the nozzles 5.15, 46, 47, 4S, 49, and 59. The íiuid di
S7 located beyond the coolant outlet connection 29.
'Sealing means 33 is located adjacent the ends 37 of the
elongated hollow members in sealing contact with the
elongated hollow members and in sealing contact with
the inner surface of the outer end portion 26 and the
outer surface of the hollow inner member 1t?, and sealing means 39 is located between the inner surface of the
recting means 55, 56, and S7 function to positively trans
fer a sufficient portion of coolant to the central region
of the domed closure 32 and the provision of trough~
shaped ñuid directing means and other hollow elongated
portion 25 and the outer surface of the member 10 on the
other side of the coolant inlet connection 228 to form a
members having inclined planar discharge ends insures
substantially uniform circulation of coolant throughout
the region of the discharge end of the device including
the nozzles.
Another form of discharge end structure for a fluid
transfer device is shown in FEGURES 4 and 5 of the
chamber ¿it? in communication with the coolant inlet
drawings. In this embodiment, the ends of the inner
23 and the ends 37 of the elongated hollow members.
hollow member 10 and the outer hollow member 12
The other ends of the elongated hollow members ter
are joined to a unitary structure 69 which includes thc
minate adjacent the closure 32 in fluid communication
with the chamber 13 and the latter chamber communi 15 nozzles and also functions as a closure at the discharge
end of the device. The structure 6d includes a cen
Cates with the coolant outlet connection 29.
trally positioned domed portion 61 merged into a cir
The portions of the elongated hollow member pass
cular wall portieri 62 terminated in a flanged edge 63 for
ing through the outer end portion 26 are preferably
receiving the end of the hollow outer member 12 which
spaced from the outer surface of the hollow inner mem
ber 10 and the inner surface of the overlying portion 20 may be welded or otherwise joined thereto. rPhe unitary
structure 60, also includes a centrally located circular
26 to facilitate providing the seal 3S between these sur
wall portion 64 having a flanged end 65 adapted to
faces adjacent the ends 27 of the elongated hollow mem
receive the end of the hollow inner member 10. The
bers while the portions of the elongated hollow members
within the inner end portion 27 are preferably supported
circular wall portion 64 is joined to the domed portion
66,
25 61 by a plurality of smaller diameter wall portions
which may be of circular cross-section as shown,
pliíies construction of the device but also makes it possi
clined outwardly and downwardly, as viewed in
ble to easily effect repairs and replacement of component
drawings, with respect to the longitudinal axis of
elements as may be required.
on the inner hollow members. This feature not only sim
in
the
the
device. The wall portions 66 are spaced from each other
located at the discharge end of the device with one 30 and may be symmetrically positioned with respect to
the longitudinal axis of the device. The passageways
end of each nozzle connected to the hollow inner mem
67 provided by the wall portions 66 communicate at the
ber 10 in communication with the passageway 11 and
inner ends of the wall portions 66 with the passageway
with the other end of each nozzle extending through a
11 of the hollow inner member 10 through the circular
suitable opening in the do-med closure 32 and being
wall portion 64 and extend through the wall of the domed
joined to the closure in a fluid tight connection such as
A plurality of nozzles 45, 46, 47, 48, 49, and 5t) are
by welding. The nozzles 45, 46, 47, 48, 49, and 50
portion 61 presenting nozzle discharge openings 68. The
are positioned about the longitudinal axis of the de
elongated hollow members 69 in the chamber 13 are lo
cated between wall portions 66 and alternate members
69 include terminating ends lying in an inclined plane
shown at '70 while the remainint7 members are provided
vice, preferably in equally spaced relationship, and are
inclined at an angle relative to the longitudinal axis of
the hollow inner member 10 diverging away from the
longitudinal axis as the nozzles extend from the member
10 to the closure 32.
As mentioned above, one of the features of the pres
ent invention is the provision of a fluid transfer device
of the multiple nozzle type including novel means for
directing coolant to the discharge end of the device in
the region of the nozzles. This means, as shown in
FlGURES l and 3 of the drawings, comprises the re
with inwardly opening trough extensions 71 projecting
downwardly `and inwardly, as Viewed in the drawings,
toward the central part of the domed portion 61. The
unitary structure 60 may be cast from alloyed materials
capable of withstanding high temperatures and may in
clude thick outer walls as shown consistent with the
heat transfer requirements.
The embodiment of the invention shown in FIGURES
6 and 7 of the drawings also includes the feature of the
nozzles at the discharge end of the device and the pro 50 present invention of a hollow inner member 10 present
ing a fluid passageway 11 located in spaced relation with
vision of fluid directing means on the discharge ends
in a hollow outer mem-ber 12 to provide a chamber 13
of the elongated hollow members. In particular, the
housing coolant inlet members and providing a coolant
nozzles 4S, 46, 47, 48, 49, and Sil are oriented with
outlet passageway. In this embodiment of the inven
respect to the longitudinal axis of the device so that
each nozzle lies `between an adjacent pair of the elon 55 tion, the discharge end of the device comprises a unitary
lationship between the elongated hollow members and the
gated hollow members 14, 15, 16, 17, 13, and 19, and
structure 8i), which may be formed by forging, including
the ends of the elongated hollow members at the dis
charge end of the device terminate between the ends
of the nozzles. In addition, the ends of the elongated
a central body portion 31, an outer circular wall portion
72 and an inner circular wall portion 73 extending up
wardly, as viewed in the drawings, beyond the terminat
hollow members are terminated in a unique manner to 60 ing edge of the portion 72, the ends of the portions 62
and 73 being joined to the ends of the hollo-w outer
member 12 and the hollow inner member 10, respectively.
The portions 72 and 73 extend downwardly, as viewed
in the drawings, and merge into the body portion 81
members 15, 17, and 19, include terminating ends lying
in a plane inclined inwardly and downwardly, as viewed 65 at radial regions spaced by a wall presenting a curved
internal surface 74 which forms with the adjacent sur
in the drawings, with respect t0 the longigtudinal axis
faces of the portions 72 and 73 an annular cavity 75
of the device, while certain other elongated hollow mem
comprising an extension of the chamber 13. A plurality
bers, likewise preferably alternate members such as mem
of elongated hollow members 76 forming inlet passage
bers 14, 16, and 18, are provided at their ends with
fluid directing means 55, 56, and 57, respectively. The 70 ways for the coolant are located in the chamber 13 in
spaced relation and in contact with the outer surface
fluid directing means may comprise extensions of the
of the member 10. The elongated members 76 are pro
outer wall portions of respective elo-ngated hollow mem
vided with discharge nozzles 77 which direct the coolant
bers which project beyond the end of the portion 31 in
into the annular chamber 75 at its inner side and the
spaced relation with a portion of the domed closure
32 including areas of the domed closure located within 75 shape of the chamber 75 directs the coolant outwardly
insure direction of coolant to all regions of the discharge
end of the device. As shown, certain of the elongated
hollow members, preferably alternate members such as
3,065,916
6
thro-ugh `the chamber 13. A plurality of fluid nozzles
’77 are formed in the body portion 81, preferably sym
metrically about >the longitudinal axis of the device, the
nozzles 7‘7 communicating with the passageway 11 and
terminating in discharge openings 78 in the `outer surface
members discharging outwardly, improves the cooling of
the device in the region subject to high temperatures and
overcomes cooling problems ordinarily present in multi
nozzle fluid transfer devices.
Fluid transfer devices used in high temperature reac
tion zones are subject to damage due to the high tem
of the portion `8,1.
In operation of the devices described above, the de
peratures involved, the temperature of the available cool
vice _is >supported in 4a metallurgical furnace such as an
ant, the quantity of coolant available, or for other reasons.
It therefore becomes necessary to repair or replace com
open 4hearth furnace for refining Vsteel by suitable sup
porting structure cooperating with the outer end portion
26 of the -hollow outer member ,12 preferably inwardly
ponents of the device particularly components subjected
to high temperatures. The fluid transfer device provided
by the present invention is adapted for disassembly and
replacement of component parts. In particular, should
of the coolant _outlet connection 29 and outwardly of
the connection between the portions 26 _and Z7. Pref
erably, `the supporting structure is designed to -provide
inward and outward movement :of the device as well
as universal Imovement ¿about `its longitudinal axis. A
source of suitable coolant such as water is connected to
any portion of the discharge end of the device become
damaged due to excessive temperatures, the inner end
portion 27 of the hollow outer member 12, the hollow
inner member i0 and the elongated hollow members 14,
the coolant inlet connection 2S and a coolant discharge
l5, i6, 17, lâ and 1% may be removed as a unitary struc
ture by breaking the seal between the inner and outer end
conduit `is connected tothe coolant outlet connection
v2.9). Also, a source of íluid such ¿as oxygen is connected 20 portions of the hollow outer member, the seal 39 between
¿the hollow inner member l0 and the end portion 26,
to the fluid inlet connection 36. The oxygen flows into
and the seal 38 in the region of the ends 27 of the elon
the passageway V11 and discharges into the furnace
gated hollow members. These components of the device
through the nozzles `45, 46, `47, 48, 49, and 50 provid
may be easilyreplaced and the damaged components may
ing a large area of impingement onto the »furnace charge.
At the same time, cooling fluid flows into the chamber 25 be repaired for future use.
There is thus provided by the present invention a novel
40 and then through the passageways of the members
fluid transfer device adapted for introducing a fluid into
Ztl, 21, v2,2, 23, 24, and 25, and discharges therefrom
into Vthe region of .the discharge end of the device in
a `high temperature reaction zone such as a metallurgical
cluding the nozzles and the domed closure 32 as de
furnace. Highly efficient cooling of the device is obtained
scribed above. .Coolant flows-outwardly from the region 30 by providing optimum relationship between the inward
and outward flow of cooling fluid and by directing the in
coming cooling fluid onto portions of the device which are
through the chamber 13 in heat exchange relationship
subject tothe highest temperatures, _including the discharge
with the inner surface of the hollow outer member 12
nozzles, while at the same time providing a device which
throughout the length of its inner end portion 27 and
also in heat exchange relationship with the elongated 35 is of small cross-sectional area as compared to the de
vices provided by the prior art and which results in a
hollow members. Coolant in ñowing from the discharge
substantial reduction of coolant demands. For example,
end of the elongated hollow members into the chamber
.of the domed Aend tothe coolant outlet connection 29
13 traverses each of the fluid nozzle structures and is
fluid transfer devices have been constructed and success
in heat interchange with portions of the domed closure
fully operated in accordance with the present invention
32
adjacent the discharge openings » of the nozzle 40 in which the outside diameter of the device has been sub
stantially reduced and in which the coolant requirements
have been reduced from 6000 gallons per hour required
by the prior art to 400G-2500 gallons per hour. The
plurality of elongated hollow members .1»4, 15, 16, 17, 18,
latter feature also results in a material reduction in heat
and 19 for conducting coolant to the discharge end of the
los;es from the furnace which may be of the order of
device positioned in the chamber comprising the space
'about 1,500,000 Btu. for each fluid transfer device.
between the hollow inner member l0 and the hollow outer
Although only one embodiment of the invention has
member 12 makes it possible to easily provide any desired
been disclosed and described herein, it is to be expressly
relationship between the cross-sectional area of the pas
understood that various changes and substitutions may be
sageways for the incoming coolant and the outgoing cool
ant without consideration of the total cross-sectional area 50 made therein without departing from the spirit of the
invention as well understood by those skilled in the art.
of the oxygen supplying passageway. It will be appre
Reference therefore will be had to the appended claims
ciated this feature of the invention makes it possible to
for a definition of the limits of the invention.
design the oxygen ñow passageway, that is, the passage
What is claimed is:
ways 11 of the hollow inner member l0, by only consider
l. Device for introducing fluid into a combustion zone
ing oxygen flow requirements, and to design the passage 55
of a metallurgical furnace comprising
ways of the elongated hollow members by considering only
an elongated hollow outer member and an elongated
coolant inlet flow requirements. The required cross
sectional area of the coolant outlet passage is established
hollow inner member located within the hollow
by selecting the proper internal diameter of the member
outer member,
12 when considering the area of the inner member 10 60
the ho'low outer member and the hollow inner member
and the total area of the elongated hollow members.
being in overlapping relationship and the outer sur
face of the inner member being spaced from the inner
Thus, in accordance with the present invention, desired
structures.
The feature of the present invention of providing a
relative cross-sectional areas of the coolant inlet passage
way, and the coolant outlet passageway, such as equal or
proportional relationships, may be readily obtained.
surface of the hollow outer member to define a first
zone extending throughout the portions of the mem
65
In addition to the feature of establishing inlet coolant
r'low and the outlet coolant flow relationships as described
above, the means provided by the present invention for
terminating the discharge ends of the coolant inlet mem
bers 14, 1'5, 16, 17, 18, and i9 of the device shown in 70
FEGURES l through 3 and for terminating the discharge
ends of the coolant inlet members 69 of the device shown
in FIGURES 4 and 5, that is having a plurality of coolant
inlet members extend into the nozzle chamber and dis
charge centrally and having a plurality of coolant inlet
bers in overlapping relationship,
the hollow outer member and the hollow inner member
having terminating ends adjacent one end of the first
zone,
a plurality of spaced elongated hollow members locat
ed within the first zone and extending longitudinally
of the device substantially throughout the portions
of the hollow inner member and the hollow outer
member in overlapping relationship,
a closure joined to the hollow outer member and ex
tending outwardly a substantial distance from the ter
3,065,916
7
minating end of the hollow outer member forming a
second zone in communication with the elongated hol
low members and the first zone,
sealing means joined to the terminating end of the
hollow inner member to Seal the hollow inner mem
ber from the second zone and the elongated hollow
members, and
a plurality of nozzle members joined to the terminating
end of the hollow inner member and extending out
wardly from the hollow inner member through the l0
second zone and the closure and being joined to the
closure,
the nozzle members diverging from the longitdinal axis
of the hollow inner member and terminating in open
ings in the closure spaced from the longitudinal axis
and located about a central portion of the closure,
each of the pluralities of spaced elongated hollow
members including an extension projecting into the
second zone between nozzle members and terminat
ing adjacent the central portion of the closure.
2. Device for introducing iiuid into a combustion zone
of a metallurgical furnace comprising
a hollow outer member and a hollow inner member,
the hollow outer member and the hollow inner mem
ber being in overlapping relationship with the outer -
surface of the hollow inner member being spaced
from the inner surface of the hollow outer member
to define a first zone extending throughout the over
8
ber having terminating ends adjacent one end of the
íirst zone,
a plurality of spaced elongated hollow members located
within the first zone and extending longitudinally
of the device substantially throughout the overlap
ping region of the hollow inner member and the
hollow outer member,
a closure joined to the terminating end of the hollow
outer member at one end of the device and extend
ing outwardly a substantial distance from the ter
minating end of the hollow outer member forming
a second zone in communication with the elongated
hollow members in the first zone,
a plurality of nozzle members joined to the terminating
end of the hollow inner member and extending out
wardly from the hollow inner member through the
second zone and the closure and being joined to the
closure, and
extensions on alternate elongated members projecting
into the second zone between the nozzle members to
define openings facing inwardly within the second
zone and the remaining elongated hollow members
including ends terminating in a plane to define open
ings facing outwardly toward a junction between the
hollow outer member and the closure.
References Cited in the file of this patent
UNITED STATES PATENTS
lapping region of the hollow inner member and the
hollow outer member,
3 O 1,468,370
2,807,506
the hollow outer member and the hollow inner mem
Morse _______________ __ Sept. 1S, 1923
Gehring _____________ __ Sept. 24, 1957
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