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Патент USA US2132028

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L. o. GUNDERSON El‘ AL
2,132,028
AUTOMATIC BOILER WATER CONDITIONER AND BLOW-OFF SYSTEM
Filed 001:. 9, 1956
2 Sheets-Sheet l
Zew£50. Garzdqsvm
OZand' W Cara-m
Oct. 4, 1938.
|_. o. GUNDERSON ET AL
2,132,028.
AUTOMATIC BOILER WATER CONDITIONER AND BLOW-OFF SYSTEM
Filed Oct. 9, 1956
2 Sheets-Sheet 2
—-ZZ7VE[72L7R5
0. 6mm
wand Iv.’ (‘av-rick -
~
2,132,028
Patented Oct. .4, 1938 ’
UNITED STATES PATENT OFFICE
2,132,028
AUTOMATIC BOILER. WATER CONDITIONER
AND BLOW-OFF SYSTEM.
Lewis 0. Gunderson and Oland w. Garrick, cm
cago, Ill., assignors to Electro-Chemical En
gineering Corporation, Chicago, 111.. a corpora
tion "of Delaware
~Application October 9, 1936, Serial No. 104,760
23 Claims. (Cl. 122-381‘)
This invention relates to the collecting and discharge of large amounts of steam and were
discharging of collapsed foam from the upper
portion of a steam boiler to remove foam forming
and foam stabilizing ingredients that have been
5 adsorbed and accumulated in the water surface
and foam bubble
More speci?cally, this
invention relates to apparatus for discharging the
water from collected collapsed foam in a boiler
without waste of steam from the boiler while si
10 “multaneously actuating a blow-off valve for in
termittently removing sludge and sediment from
the boiler.
V
.
In the Carrick and Seniii’ U; S. Patent No.
2,038,414 dated April 21, 1936, there is described
15 and claimed a'foam indicating and control ap
‘paratus for steam boilers wherein the moisture
entrainment in the steam above the boiler water
is accurately indicated while the-steam is still in '
the boiler by means of a collecting tube disposed
20 in the steam space of the boiler for sampling
the moisture in the steam. The collected mois
ture is drained through an indicating means and
can actuate a blow-o? mechanism’for blowing
down the boiler. However in this patent the
25 boiler is blown off in the usual manner from the
lower portions thereof.
We have found that the foam forming ingre
dients and foam stabilizing ingredients in boiler
very ine?icient for blowing down the boiler to
remove foam producing substances.
It is then an object of this invention to provide
apparatus for removing foam producing and foam
stabilizing ingredients from steam boilers in oper
ation.
‘
i
A further object of this invention is to provide
apparatus for collecting collapsed foam or “light
water” at the boiler water surface in an operating
steam boiler and discharge this material’without
discharge of substantial amounts of ‘steam from
the boiler. ,
A further object of this invention is to provide
an automatic blow-off apparatus for steam boilers 15
actuated by water containing large amounts of
foam forming and foam stabilizing ingredients
that have been ‘collected ‘from the boiler water.
A further object of this invention is to dis
charge from an operating steam boiler, the water
from collapsed foam collected near the upper por
tion of the boiler together with sludge and sedi- _
ment from the lower portion of the boiler.
Other and further objects of this invention will
become apparent to those skilled in the art from
the following detailed description of the annexed
sheets of drawings which disclose preferred em
bodiments of the invention.
water accumulate ‘or are positively adsorbed in
On the drawings:
'
30 ‘the steam .bubble interfaces or in the'foam ?lms. " Figure 1 is a fragmentary diagrammatic side
As these substances are released at the water sur
elevational view, with a part broken away and‘ 30
face upon breaking of the steam bubbles it is shown ‘in cross. section, of a locomotive boiler
apparent that they are free to recirculate in the showing our invention applied thereto.
_
boiler water, repeating their function of bringing
Figure 2 is a diagrammatic vertical cross-sec
35,v about foam formation and stabilization by beg ' tional view taken substantially along the line
‘coming adsorbed in the surfaces of new steam 11-11 of Figure. 1.
bubbles formed in the‘ evaporation zone in the
Figure 3 is an enlarged elevational view of the '
boiler. These substances therefore perpetuate‘ blow-off valve illustrated in the lower right-hand '
foam formation in the boiler unless they are re
corner of»F'1gure 1.
.moved or unless their foam ‘forming and sta
Figure 4 is a fragmentary diagrammatic view 40
, bilizing ability is destroyed.
~
with a part broken away and shown in cross sec
According to this invention the “light water" tion, of a locomotive boiler showing a modi?ed
or the water contained in the foam ?lms having form of our invention applied thereto.
a high concentration of foam forming and foam
Figure 5 is an enlarged fragmentary vertical
45 stabilizing ingredients is collected at the top level vcross-sectional view taken substantially along the
45
of the boiler water and'discharged ‘from the line (.V-V of Figure 4.
boiler. The apparatusiof this invention ‘provides
Figure 6 is an elevational view of an alternative
for the removal of the concentrated boiler water f form of pipe line system for the apparatus shown
containing the foam producing and foam stabiliz
50 ing substances without discharging substantial
amounts of steam from the boiler and therefore
Idi?'ers widely“ from previously vused skimmers
' which consisted of perforated pipes located at the
surface of the boiler water to skimo?’ foam there
, from. These skimmers,-however, permitted the
in Figure 4.
'
' Figure '7 is an enlarged vertical cross-sectional 50
view of the blow-01f valve illustrated in the lower
right-hand corner of‘Figure 4.
As shown on the drawings:
1
The‘invention is shown as applied to a locomo
tive boiler but it should be understood that the
2
,
2,132,028 >
- invention may be applied, as well, to other
of boilers. The locomotive boiler l0 shown in
Figures 1 and 2 comprises the usual boiler shell II
and a ?re box l2 de?ned by the sheet I3. Boiler
tubes l4 extend in communication with the fire
box forwardly through the sheet l3.
_
Under usual operating conditions water I! sur
rounds the tubes l4 and the ?re box l2 and ex-'
tends upwardly to the normal water line I6 which
10 is a slight distance above the crown sheet II for
the ?re box.
,
valve 26 from the basin 2| or from the mud‘ ring
may be controlled by the size of the pipes 24 and
33 or by placing regulating valves such as 24a
in either or both of these pipes. A shut-off valve
31 may be provided in the blow-off valve 26'to
permit disassembly of the blow-off valve for re
pair purposes without removing pressure from
the boiler. v
-
'
:
' It should be understood that any type of blow
off valve can be used.
.
10
'
From the above description of Figures. 1 to 3, it
. The space I!) between the water level l6 and
should be understood that the foam stabilizing
the top of the boiler is the steam space of the
boiler from which steam is supplied to the steam
15 dome 20 for feeding the operating cylinders (not
and foam producing substances are concentrated
at the top water» level in the boiler in what clS
shown) of the locomotive.
20
25
30
35
45
_
According to this invention a collecting basin
2| is located approximately at the normal 'water
level l6 in the boiler and the bottom of the basin
may be slightly below or slightly elevated from
that level as long as the top edges of the basin
are above the normal water level. The basin 2|
is suspended from the boiler shell II by means
of straps 22 and 23 and is thus held rigidly in the
boiler and extends transversely thereacross with
out interfering with the ?ow of steam to the
steam dome 20. The basin 2| is preferably lo
cated, as shown in Figure 1, between the steam
dome '20 and the primary evaporation zone of
the boiler so that it will intercept any excessive
foam development in the boiler that might other
wise continue toward the steam outlet in the
steam dome and be entrained with the steam.
'When the boiler is in operation the buoyancy of'
the steam bubbles increases the volume of the
boiler water such that the top edge of the basin
will be below the water level. A pipe 24 com
municates with the bottom-of the basin 2| and‘
with the inlet 25 of a blow-off valve 26, which
may be of any usual construction. The blow-oil’
valve when opened will ,cause the water in the
basin 2| to be drained fromthe basin and dis
charged from boiler through a discharge line 21
communicating with the valve 26 and with a
steam separator 28 mounted on top of the boiler
shell ||. Steam and water are separated from
each other in the separator 28_ and the steam dis
charged upwardly at 29 from the separator 28.
known as concentrated water or light water.
This light water is collected in the basin 2| and
is discharged from the boiler thereby removing
the foam producing and foam stabilizing ma
terials. Since. the collecting basin is drained
from' the bottom thereof, there -is no material loss 20
of steam when the boiler is blown down.
_
In accordance with this invention‘ sludge and
sediment can also be blown‘ from the boiler si
multaneously with the removal of concentrated
25
Steam is separated from the discharged con
centrated boiler water and the discharged sludge
water and released to the atmosphere above the
boiler. The sludge water and the concentrated
water are discharged with harmless force to the 80
~ boiler water.
road bed below the locomotive.
In Figures 4 and 5 parts identical with parts
described in Figures 1 and 2 have been designated
by the same reference numerals. .
In Figures 4 and 5, the reference numerals 40 .85
and 4| designateseparate buckets or basins hav
ing open tops and closed bottoms mounted in the
steam space IQ of the boiler with their bottoms
extending into the boiler water |5_ below the nor
mal level l6 thereof. The bucket 4| is taller than 40
the bucket 46 and extends thereabove as shown. ‘
Brackets '42 and 43 support the buckets 40 and 4|
from the boiler shell .||. The position _ of the
buckets with respect to the boiler water |5_can
be adjusted such as,.for example, byproviding. 45
slots in the straps or brackets 42 and 43.
Pipes 44 and 45 enter through the boiler shell
II as best shown in Figure 5 and extend hOl'lZOD-e
The water is discharged through a downwardly - tally through the steam space IQ of the’ boiler into
50 extending pipe 30 to the road bed below the boiler the buckets 4ll-and 4| respectively. The pipes 44 60
and. 45 are bent downwardly in the centers of the
buckets to form siphon legs 44a and 45a respec
charge water from the mud ring in the boiler. tively. ‘The siphon legs 44a and 45a terminate
For this purpose, the blow-off valve 26 is secured > near the/bottoms of the buckets or basins 40 and
55 to a flange 32 of a pipe 33 extending through 4|. By arranging the tops of the buckets at two 55
the boiler shell II as indicated in Figure 3. The ' different levels in the boiler, the lower bucket 40
pipe 33 communicates with the mud ring of the will collect collapsed foam before the foam level
boiler and when the valve 26 is opened, sludge in the boiler reaches'the level of the top of bucket
and sediment will be discharged through the pipe 4 I. The matter collected in bucket 40 is discharged
60 33 into the blow-oil‘ valve 26' and through the , from below its surface by the siphon leg 4411 into 60
discharge pipe 21 into the steam separator 28 the pipe 44 whenever its level in the bucket vis
where‘the steam is separated therefrom and the above the siphon neck. If the foam level inv the
boiler continues to rise in spite of the discharge
sludge water is discharged tothe road bed.
The blow-off valve 26 can be opened by steam from bucket 40, collapsed foam will be collected in
65 pressure from the locomotive boiler supplied the bucket 4| as soon as the foam level reaches the
through a‘ pipe line 34.. Admission of steam top of this bucket. Matter collected in bucket, 4|
through the pipe line 34 is controlled by an op
is discharged therefrom from below its surface‘
eratinglvalve 35 mounted in the cab 36 of the into the pipe 45 by the siphon'leg 45a.
The pipe 45, outside of the boiler shell ||, feeds
locomotive. When the valve 35 is opened the
steam pressure of the boiler is exerted in the pipe ‘ into a valve 46 of the steam trap type mounted on
line 34 and this pressure causes the blow-01! valve the boiler near the bottom thereof as best shown
to open thereby discharging water from the basin in Figure}. The valve 46 discharges into a hori
2| and sludge and. sediment from the mud ring zontal pipe 41 extending toward the rear' of‘ the
as' at 3|.
If desired the blow-off valve 26 can also dis
in
of the boiler.
75
The amount of discharge through the blow-off
boiler.
_
~
'
'
'
' The pipe 44, outside of the boiler shell ll, 75 ‘
3
2,132,028‘
terminates in a valve 48 of the steam trap type
mounted on the boiler || near the bottom there
of. The valves 45 and 48 are adapted to be
opened by water collected therein but are not
opened by steam. The valve 48 discharges
through a pipe 49 into the pipe 41.
The siphon legs 44a and 45a prevent spasmodic
operation of the steam traps 46 and 48 whenever
a little water is splashed into the buckets 44 and
10 45 since water will not enter the traps until
either bucket is ?lled above the siphon neck of
the siphon legs. The traps will‘ then operate
continuously until the buckets are emptied into
the lower terminus of the siphon legs. - ’
15
operate to center and position the coiled spring‘ >
We have found that the boiler water at the
top of the boiler contains relatively greater
amounts of foam producing and'foam stabilizing 5
substances and have therefore according to this
invention collected this water in the buckets 40
and 4|. It is known that the water surface and
the steam bubble interfaces ofvboiler water ex
hibit low surface tension, which means that sur 10
face active substances which produce and sta
bilize foam are positively adsorbed therein. This
lowered surface tension induces positive adsorp
tion of other foreign substances, both dissolved
and suspended matter, particularly colloidal sub-L
stances all of which accentuate the production
Vent holes 44b and 45b (Figure 5_) are prefer
ably provided at the top of each siphon leg to
prevent boiler pressure from forcing water up
into the siphon legs when the buckets are only
and stabilization of foam.
The foam or steam bubbles that are collapsed
partially ?lled as a result of steam condensation
in the collecting‘buckets 48 and 4| will naturally
20 in the pipes 44 and 45.
Small holes of 11;" di—
ameter are sumcient to prevent this ?ow until
the buckets are ?lled above the siphon necks.
The pipe 41 terminates in a blow-off valve 58
shown in detail in Figure '7. A tube 5| com
municates 'with the pipe line 41 ahead of the"
blow-oil’ valve 58 and registers with apressure
gauge 52 in the cab 38 of the locomotive. ‘The
pressure within the pipe line 41 is thereby indi
cated to the operator in the cab and indicates
contain a higher concentration of the foam pro
15
20
ducing foreign substances than the solid water
withdrawn 'from the lower portions pf the boiler.
The collecting buckets are arrranged at two
different levels with the bucket 48'being designed
to collect foam or light water from a' level ap
25
proximately even with the top reading of the
water glass on a locomotive'boiler.
As water ac
cumulates in the bucket 48 and passes above the
siphon neck or leg 44a it will ?ow into the valve
48 through the pipe line 44. The valve 48 opens 80
30 when the valves 45 or 48 are open and water is
‘ to discharge water into the pipe line 41'." The
draining from the bucketsf
'
The blow-off valve 58 comprises a passaged water in the pipe line 41 is discharged into the
body portion 53 having an inlet 54 for con
blow-off valve 58 in the inlet port 54 thereof on
nection to the'pipe 41, a sludge water inlet 55 top of the piston head 58. .Since the ?ow from
for connection with a. pipe 56 leading from the
bottom portion or mud ring of the boiler and a
discharge portion 51 communicating with the
pipe line 21 to the steam separator 28.
»
valve- 48 will not ‘ordinarily be su?icient‘ to de
press thev piston 58, the water from the valve
flowing through the pipe line 41 passes through
the duct 65 in the piston head and is discharged
to the steam separator 28 on top of the boiler
through the pipe line 21. Any steam is liber 40
The body portion 53 is provided with an annu
lar valve seat 58 about a port 59 that provides
communication between the inlet portion 54 and ated to the atmosphere through the opening 29~
the discharge 51. A piston 68 is slidably mounted of the separator 28 while the water is drained
in the cylindrical portion 5| above the port 59 . with harmless force to the road bed through the
and is adapted to seat against the annular seat discharge pipe line 38.
When water has been ‘completely discharged
58 by virtue of pressure in the inlet portion 54
on the relatively large area of the top 5811 of the from the bucket 48 steam will ?ow through the
piston.
pipe 44 into the valve 48 thereby causing this
'
The piston 68 is provided with an upper cy
lindrical portion 52 that extends into a recessed
plug 83 threaded into the top of the body por
tion 53 of the valve. The cylindrical portion 52 is
provided with a condensate groove 54 to prevent
water from being trapped above'the cylindrical
portion 52.
‘
The piston head 58 is also provided with a duct
65 extending therethrough to permit drainage
, from the inlet portion 54 into the discharge,
portion
51.
‘
-
s
I , ~ “The piston 58 is also provided with an elon
gated reduced lower end 85 extending through
valve to close due to the absence of water. The
discharge of water from the boiler is then ‘dis
continued until water is again accumulated in‘ 50
‘the bucket 48. The discharge‘ of boiler water
from the bucket 48 may be of relatively small
magnitude such as three to ?ve gallons perv
minute, This will'causethe valve 48 to be opened
for extended periods of time depending upon the
nature of. the boiler water and the foaming tend
encies thereof.
‘‘
Ordinarily the rate of discharge from the
' bucket 40 will be so arranged that it will be
insuf?cient to completely condition the boiler
5 the discharge portion 51 into the sludge inlet‘ water to keep foam developments ‘from rising
portion 55 of the valve for a purpose to be here- ' above the level of the cylinder 48. Therefore
periodically the foam or light water will develop
inafter described.
The body portion 53 is provided with a threaded above the level of foam collector 48 and will be‘
‘bore 51 between the sludge inlet 55 and dis
charge portion 51 thereof for receiving an aper
tured seat insert 68 through which the end 86
of the‘qpiston 68 freely extends. A ball 58 pref
erablybf stainless steel, is adapted to be held
accumulated irr'the bucket 4|. When the water 65
in the bucket 4| reaches a level above the siphon
in engagement with the insert 58 by means of a
coiled spring 18 mounted in a recessed boss or
The combined water streams from the valves
.plug 1|. ‘which is threaded into the apertured
lower end of the body portion 53. The plug 1|
is provided with a centering boss 12 and up
75 standing segmental cylindrical lugs 13 that co
leg 45a of the pipe line 45 it Will be discharged
into the valve 46. The water will open the'valvég
45 and ?ow into the pipe line 41.v
'
‘
45 and 48 will be in excess of the amount that
can be freely discharged through the duct 65 of
the piston head 68 in' the blowio'? valve 58 thus
creating a pressure above the piston head in the
. blow~off valve and causing the ‘piston to be seated 75
4
2,182,028
against the valve seat 58. This downward move
ment of the piston causes the end portion 56
thereof to depress the ball 69 thus communicating
the sludge water inlet 58 with the discharge open
ing 51 and permitting a blowing off of the lower
portion of the boiler into the pipe line 21 to the
steam separator. The blowing off of the lower
portion of the boiler thus prevents the accumu
lation of, excessive solid foreign matter in the
10 boiler and decreases the foaming therein so that
the valves 46 and 48 will be closed and the piston
60 will again rise in the blow-oil‘ valve to shut
off the ?ow of sludge water from the boiler. Ob
viously; the discharge from the valve 46 alone
15 may, in some instances, be su?lcient to operate
the blow-off valve 50 for the discharge of sludge
water as,\for example, when the valve 48 becomes
inoperative.
-
It should be understood'that normally the con
20. centrated or light water in the bucket 48 can be
ple, within seventy-?ve percent of the maximum '
allowable concentration. The systems are en
tirely automatic‘ and carry out the function of
maintaining a uniform desirable concentration of
boiler water without manual interference. The.
systems further provide for the most e?icient re
moval of foam forming and foam stabilizing sub
stances with the least waste of boiler water and
thus with the least interference with the operat
10
ing e?iciency of the boiler.
The collection of foam forming and foam sta
bilizing substances in the collapsed foam ?lms
will permit the maintenance of higher concentra
tions of soluble mineral salts in the boiler water,
thus materially reducing the waste of water blown 15
out to prevent foaming. Since water blown out
from a collapsed foam ?lm source contains higher
percentages of the foam forming substances than
the main body of boiler water, the percentage of
these substances in the boiler water will be ma
continually» discharged without actuating the
terially reduced simultaneously with the increased
blowq-o? valve 50. However when the concentrated
concentration of‘ dissolved mineral salts in the
water. This results in many advantages besides
saving of boiler water in that it permits the main
or light water accumulates so as to rise beyond the
top portion of the siphon leg ‘45a in the bucket
4|,‘ this increased flow is sufficient to open the
blow-01f valve for the discharge of sludge water
from the boiler thereby decreasing the foreign
ingredients in the boiler water and lowering the
20!
tenance of a higher alkalinity of the boiler water 25
without danger of excessive foaming._ The main
tenance of higher alkalinity reduces the corrosive
qualities of the water and will increase the effec
tiveness of the chemical treatment of the boiler
30
water to prevent all types of scale formation.
As pointed out above the system of this .inven
tion utilizing basins, buckets and other collecting
discharge water. This is bene?cial incold weath- ‘I means for collapsed foam above the normal visi
er to prevent a freeze-up of the blow-off system ble water level, intercepts the foam. simultaneous
and assures an opening of the blow-off valve 5% ly developed in the evaporation zones of the boiler 35
and prevents its reaching the steam outlet.
- at least at infrequent intervals to remove accu
foam. Even if no water collects in the buckets 48
and 4!, steam contained in the pipe lines 44 and
45 will eventually condense forming water to open
'the valves 46 and 48 at infrequent intervals to
mulated sludge.
7 It should also be understood that the blow-off
system can be used without the blow-off valve Eli
40 for discharging sludge water. In other words the
collecting buckets can be used alone in connec
tion with valves such as 46 and 48 for removing
concentrated water from the boiler.
In Figure 6 there is illustrated another modi?
45 cation of the system wherein the pipe line 45 from
the bucket 4| terminates in the valve 46 and dise
charges water into the pipe line 4'! as described in
Figure 4. However the discharge pipe 44 from
the bucket 40 communicates with a valve 48 of
the steam trap type which valve 48 discharges
50
through a pipe, 80 into a second steam separator
8| mounted at the lower portion of the boiler.
Thus water from the bucket 48 is discharged sep-'
arately from water from the cylinder 4!. The
65 steam separator is provided with a steam dis
. ‘charge opening 82 at the top thereof and a water
drain as at’the bottom thereof.‘ In this manner
some of the light or concentrated water is dis
charged through a separate system and the bucket
,4l collects the excessive foam or light water for
actuating the blow-off valve to discharge sludge
water from the boiler.~
-
We are aware that many changes may be made
and numerous details of construction may be
varied through a wide range without departing
from the principles .of this invention, and we 40
therefore, do not purpose ' limiting the patent
granted hereon otherwise than necessitated by the
prior art.“
7
We claim as our invention:
1
.
l. The method of controlling boiler water in 45
operating steam boilers which comprises collect
ing water directly from the main body of light
boiler water only above the normal level of water
in the boiler and periodically draining the col
lected water from the boiler without substantial 50
discharge of steam therewith.
2. The method of controlling foaming of boiler
water in operating steam boilers which comprises
collecting directly from the main body of water
in the boiler; only water from collapsed foam on 55
top of the boiler water and periodically discharg
ing the collected water from the boiler without
. substantial discharge of steam therewith.
3. The method of controlling foaming of boiler
water in operating vIsteam boilers which comprises 60
segregating directly from the main body of water
in the boiler, only water from collapsed foam on
From the above description it should be un s top of the boiler water, and dischargingthe seg
derstood that many modifications of the ‘illusé ‘ regated water from‘ the boiler when a predeter
trated systems can be used in applying this in
mined amount has been segregated without vent
vention and are within the scope ‘of the invention." ing the steam space of the boiler to the atmos
The systems of this invention provide for the
controlling of boiler water without excessive and
unnecessary blowing off of boiler water such as
takes
place in the continuous blow-off systems
70
whichA operate whenever the boiler is in service.'
' With the systems of this invention blowing oifis
not accomplished after washouts or water changesv
and does not take place until the boiler water
concentration reaches a definite value. for exam
' 7 phere.
-
‘
4. The method of controlling foaming in oper
ating steam boilers which comprises collecting di
rectly from the main body of water in the boiler,
70
only concentrated boiler water on top of the boiler
water in the boiler, periodically discharging the
collected water from the boiler without venting
the steam space of the boiler to the atmosphere 75
2,132,028 '
and simultaneously blowing off sludge water from
pipe lines preventing the passage of steam there
the bottom of the boiler.
through, a blow-on’ valve, a discharge line com
,
.
5. The method» of controlling foaming in oper
municating with said steam traps and with, said
ating steam boilers which comprises segregating’ blow-off valve, a sludge discharge pipe comihuni
directly from the main body of water in the boiler,
only concentrated boiler water from collapsed
foam on top of the boiler water, periodically‘dis
charging the segregated water from the boiler
from below the surface of said water to, prevent
10 discharge of steam therewith and simultaneously
blowing off sludge water from the bottom of the
boiler.
,
6. The method of controlling foaming in oper
ating steam boilers which comprises collecting
directly from the main body of water in the
boiler, only water from collapsed foam on top of
the boiler water, flowing the collected water from
cating with the valve and with the lower portion
of the-“boiler, means in said valve actuated by
?ow of water from the steam traps discharge
line into the valve for opening and closing the
sludge blow-o? and a drain line from said blow-,
off valve for receiving the sludge water and the 10
collected water therefrom)u
,
V
11. Apparatus for controllingfoaming in oper
ating steam boilers which comprises a collecting
means mounted in the boiler in communication
15
with the boiler only above the normal water level.
therein whereby foam can ?ow into said means
directly from the main body of water in the boiler, below the surface thereof out of the boiler to pre- ‘ a pipe line communicating with the lower portion
vent discharge of steam with the water and blow
of said ,means to drain the means, a blow-off valve
20 ing o? sludge water from the bottom of the boiler outside of the boiler communicating with said pipe 20
whenever the ?ow of concentrated water‘ increases
line, means communicating the blow-off valve
beyond a predetermined amount. ’
with the lower portion of‘the boiler, and means a
7. The method of controlling foaming in oper
responsive to periodic liquid ?ow through the pipe
ating steam boilers with least possible waste of line for actuating said blow-off valve to discharge
25 boiler water which comprises collecting directly ,water from the collectingmeans and sludge water
from the main body of water in the boiler, only from the boiler.
‘ '
water from collapsed foam on top of the boiler
12. Apparatus for controlling foaming in oper
water in the steam space of the boiler, ?owing the ating steam boilers which comprises an open
collected water out of the boiler without substan
topped bucket vertically mounted in the steam
30 tial discharge of steam therewith and utilizing the
space of a boiler with the lower end thereof below
?owing water to blow off sludge water from the the normal level of water in the boiler and the
bottom of the boiler whenever the flow increases open top in communication with the light water
beyond a predetermined rate.
' zone in the boiler. a pipe line extending'into the
8. The method of operating locomotive boilers bucket from outside of the boiler and having a
35 to control foaming of boiler water therein which downturned leg portion terminating near the bot
comprises collecting concentrated water from col
tom of the bucket. a steam trap outside of the
lapsed foam on" top of the boiler water directly boiler below the bucket communicating with the
from the main body of water in the boiler in the pipe line. said trap being actuated whenever water steam space of the boiler, draining the collected collected in the bucket over?ows the leg portion of
40 concentrated water through a steam trap ‘from the pipe thereby discharging water into the trap
below the level thereof out of the boiler to pre
until the bucket is emntiéd below said leg and a
vent discharge of steam therewith, ?owing the discharge line for receiving water from the steam
25v
30
35
40
drained water into a blow-off valve and‘ actuating
' said valve with the ?ow of water to blow oif>sludge
45 water from the bottom of the boiler.
9. Apparatus for controlling foaming in operat
ing steam boilers comprising a pair of open topped
‘ buckets vertically mounted in the steam space of
a boiler and having the bottom ends thereof be
50 low the normal water level in the boiler, the top
13. Apparatus for controlling foaming in oper
ating steam boilers comprising a pair of buckets
vertically mounted in the steam space of a boiler
in communication withm the {boiler at ‘separate
levels above normal ‘water level in the boiler for
receiving therein light water formed on top of
the boiler water, individual pipe lines extending 50
of one of said buckets being at a higher level in _ from outside of the boiler into said buckets and '
. the boiler than the top of the other bucket, indi-' having ‘downwardly turned leg portions terminat
vidual pipe lines extending from outside of the ing in the buckets near the bottoms thereof, steam
boiler into the buckets and having downwardly
55 turned leg portions terminating in the buckets,
near the bottoms thereof. steam traps, each at a
level beneath the buckets, communicating with
said pipe lines for receiving water and steam from
the buckets. a discharge line communicating with
the steam traps for-receiving water therefrom, a
water actuated blow-off valve communicating with
said discharge line having a restricted passageway
accommodating limited flow of water from said
line therethrough, said valve being opened by an
increased ?ow of water therein from said line, a
sludge pipe communicating with the lower por
tion of the boiler and with the blow-o?' valve, and
a drain line from said blow-off valve.
'
10. Apparatus for controlling foaming in steam
.70 boilers with least possible waste of boiler water
which comprises means for collecting water from
collapsed foam at separate levels in the boiler
within the light water zone thereof, pipe lines for
draining the collected water from the boiler, steam
traps below the water collecting means in said
traps outside of the boiler below the levels of the
buckets communicating with said pipe lines for Y’
receiving water and steam from the buckets, a
discharge line communicating with the steam
traps for receiving water therefrom, a water actu
ated blow-off valve communicating with said dis
charge line having a passage accommodating a
limited flow of water from said line therethrough
and means to open the valve actuated by flow of
water'from said line whenever said?ow exceeds
said limited amount accommodated by said pas
sage, a sludge pipe communicating with the lower
portion of the boiler and with the blow-o?' valve,
and a. drain line from said blow-61f valve for re
ceiving the water from the steam‘ traps and the
sludge water from the blow-o?’ valve.
14. The method of controlling foaming ‘in steam
boilers with the least possible waste of boiler
water which comprises collecting in a container
directly from the main body of boiler water in the
steam space of the boiler, concentrated water
from collapsed team on top of the boiler water. ‘
,
6
2,182,028
the boiler, only light water and \water from col;
periodically discharging said water only without. lapsed foam on ‘the boiler water, a drain pipe
discharge of steam therewith until said container communicating with the lower portion of said
means to remove collected water therefrom, and a
'is substantially empty.
15. The method of controlling-foaming in steam valve in said pipe for controlling the ?ow of water
draining the collected water out of the‘boiler and
boilers with ‘the least possible waste of boiler
therethrough.
,
I
'
20. Apparatus for controlling foaming in oper:
concentrated water from collapsed foam on top of ating steam boilers which comprises an open
the boiler water in the steam space of the boiler topped bucket vertically mounted in the steam
directly from the main body of water in the boiler, space of the boiler with the lower end thereof 10
draining the collected ‘water out of the boiler, below the normal level of water in the boiler, a
discharging the water only without substantial pipe extending into the buckehfrom outside of
discharge of steam therewith, utilizing said water the boiler and having a downturned leg portion
to actuate a blowing off of sludge water from the terminating in the bucket near the bottom there
boiler and discharging said sludge water coinci¢ of, said leg portion being vented at the top there
dentally with‘ the discharge of water-from said of, a steam trap at a level below the bucket com- \
municating with said pipe line and a discharge
water responsive valve.
1
16. Apparatus for controlling foaming in oper~~ line ‘from said steam trap adapted~> to receive
water therefrom to discharge said water whenever
ating steam boilers which comprises water col
water which comprises collecting in a container ~
20
it over?ows from the steam trap.
‘
20 lecting means in the boiler having the inlet there
21. Apparatus for controlling foaming in steam
of above the normal water level in the boiler but .
below the steam outlet, said inlet being in com
munication only with the main body of light boiler
boilers comprising means for collecting concen
trated water at the top of boiler water in an oper
. water formed on‘ top of the boiler water for di
25 rectly receiving light water into thecollecting
ating steam boiler, pipes for draining the col
lected water from said means at different levels
means, a vdrain line for‘ draining liquid from the ' therein, steam traps below the level of the col
collecting means and a liquid responsive valve in lecting means communicating with each of said
said drain line below the collecting means for pipes, a discharge line communicating with the
effecting periodic discharge ofliquid from the steam traps to receive water therefrom, a blow
30 collecting means, said valve being so constructed oir valve casing in communication with the lower at
and arranged to open upon a predetermined flow portion of the boiler, a piston slidable in said valve
of liquid thereto and close upon cessation of said casing, means in the valve casing operated by the
piston to open and close the valve, said discharge
?ow.
line terminating in said valve casing above the
17. Apparatus for controlling foaming in oper
piston therein to feed water from the traps to the 35
35 ating steam boilers which comprises water col
lecting means in the boiler having the inlet there
of above the normal water level in the boiler but
below the steam outlet, said inlet being in com
piston for operating the piston and a. duct in said _
munication with the main body'of light boiler‘
piston allowing drainage of a predetermined flow
of water from the discharge line, said blow-oi!
valve parts being so constructed and arranged‘
water formed on top of the ‘boiler water for di
that a flow greater than a predetermined flow will
rectly receiving light water into the collecting
depress thepiston to openthe valve and blow o?f
the boiler.
',
22. Apparatus for controlling foaming in oper
ating steam boilers which comprises is collecting
means, a drain line extending into the collecting
means having a downturned leg portion terminat
ing near the bottom of the collecting means and
a liquid responsive valve in said drain line at a
level below the collecting means, said valve'being
so constructed and arranged to open upon a pre
determined ?ow of liquid thereto and close upon a
cessation of said ?ow whereby a rise in liquid level
in the collecting means above the downturned leg
means mounted in the boiler between the steam 45
outlet and main evaporation zone of the boiler in
direct communication with the light boiler water
above the normal water level therein and posi-'
tioned to collect only light water and foam gener
ated in the boiler that might otherwise continue
portion therein effects a siphoning of liquid out _ toward the steam outlet and be entrained in the
of the collecting means into the valve to open
the valve for discharge of liquid until the liquid
level in the collecting means is below the leg
portion whereupon the liquid flow to the valve
ceases and the valve closes to prevent discharge’
of steam.
‘
I
18. The method of controlling foaming in ‘oper
ating steam boilers which comprises collecting di
rectly from the main body of water, in the boiler
only the light water formed above the normal level
steam delivered from the boiler, a pipe line com
municating with the lower portion of said means
to drain the means and a liquid responsive valve
in said pipe line below the collecting means for
effecting periodic discharge of the collected mate
rial.
'
'
231 The method of controlling foaming in oper-,
ating steam boilers which comprises ‘collecting
foam-generated in the boiler directly from the
main body of‘water in the boiler only at 'a level
of waterin the boiler, periodically siphoning the . above the normal water level in the boiler. and at
collected water whenever the same exceeds a pre
a point between the steam outlet and main evap- '
determined level and discharging said water without ventingx steam in the steam space to the
oration zone of the boiler to prevent entrainment
of foam and moisture in the steam issuing'from
atmosphere.
> the boiler and periodically draining the collected
- l9. Apparatusifor removiiig foam producing and foam from the boiler without venting steam in
foam stabilizing ingredients from boiler water in. the steam space to the atmosphere.
_ ‘operating steam boilers which comprisesrmeans
in the upper. portion of the boiler so positioned as‘
LEWIS d. oonoanson.
to collect directly from the main body of water in
0mm) w. cARRrcx.
70'
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