AN IMPROVED METHOD OF FEEDING PURIFIED WATER TO STEAM BOILERS AND APPARATUS FOR USE IN CONNECTION THEREWITH
Year: 1884

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and C, Patent Agents,
Southampton Buildings, London, in the County of Middlesex, do hereby declare
the nature of said Invention for "AN IMPROVED METHOD OF FEEDING PURIFIED
WATER TO STEAM BOILERS AND APPARATUS FOR USE IN CONNECTION THEREWITH
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
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This invention relates to an improved method of feeding water to steam-boilers
and to apparatus for use in connection therewith.
The object of the said invention is to provide for the feeding of feed water freed
from impurities to steam boilers such as Cornish or other cylindrical-boilers, circular
boilers having boiler-tubes or tubular boilers,, from a tubular or other equivalent
boiler having a sufficiently higher pressure than that prevailing in the said boiler
or boilers to be fed with the said feed-water and also, to provide means for effecting
the said feed of water from the boiler in which the higher pressure exists to the
boiler or boilers under lower pressure, so as to cause the feed to be either continually
or periodically, and to allow of being readily regulated.
In the accompanying drawing
Figure 1 shows a tubular boiler provided with a device for purifying feed-water
and combined with a number of cylindrical boilers to be fed from the said tubular
boiler with purified feed water.
Figure 2 shows the connection of the cylindrical boilers with the connecting pipe
from the tubular boiler.
A indicates the tubular boiler and B the device or depositing-chamber employed
for purifying feed-water.
CC indicate the cylindrical or other boilers to be fel from the boiler A with
feed-water, and D indicates a pipe connecting by means of the branches & d', the
said boiler A with the boilers, CC. The branches are provide with suitable
cut-off valves a while the pipe D has the main cut-off valvo a¹.
The tubular boiler A is suitably connected with the device or depositing.
chamber B substantially in the same manner as described in the Specification
of former Letters Patent dated October 30th A.D. 1882 N° 5168. so that no
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page_text: particularly detailed description will be required for this part of the arrangement
shown in the drawing. The feed water enters the chamber B through the feed-
water inlet-pipe c and is met by the circulating mixture of steam and hot water
ejected from the tubular boiler A through the steam inlet-pipe b, the said circulating
mixture forcing the fresh feed-water with reduced velocity through a number of
suitable filtering plates or equivalent filtering media h of any convenient material,
whereby the impurities contained in the said feed-water are separated from the
latter and retained by the said filtering-media while the purified feed-water mixed
with the said water of circulation passes on and enters the, boiler A through the
pipe e.
I wish to state here that I do not confine myself to apply sieve-like plates in the
chamber B for the purpose of filtering the feed-water and purifying the same as
stated in the said former specification hereinbefore referred to, as I propose to
substitute for such perforated plates any equivalent filtering-material of suitable
nature and construction, such as hurdle-work of thorns, wire-grate, coarse sack-
cloth, basket-work, or any other equivalent material adapted to retain the said
impurities in the feed-water when the latter is met, and carried along through the
said filtering media, by the circulating mixture of steam and hot water ejected
from the boiler A. The latter being thus continually fed with feed-water practically
free from impurities has a higher pressure than exists in the boilers C. C which as
herein before described are connected with the said boiler A by means of the pipe D
having the main cut-off valve a¹ and the branches d d' provided with the cut-off
valves a a.
In order to effect the feeding of the said boilers C.C₁ having the lower pressure
with purified feed-water from the boiler A having the higher pressure, I proceed as
follows, that is to say, if for instance the boiler C¹ requires feed water I open the
valve a¹ in the main and the valve a in the branch di so as to cause the required
quantity of the purified water from the boiler A to be forced through the pipes D
and d' into the boiler C¹ by means of the higher pressure prevailing in the said
boiler A as compared to that existing in the boiler C¹. After the feeding of the
boiler C¹ has been completed the said valves are shut again and the same operation
will take place with regard to boiler C by opening the valve a¹ of the main and
the valve a of the branch d. Instead of such periodical feeding it will be seen that
the feeding may also take place continually if the said valves a' and a are made
adjustable and provided with graduations so as to allow of regulating the inflow of
purified feed-water from the boiler A into the boilers C C¹ in proper proportion to
the consumption of steam in the said boilers.
It will be seen that this improved method of feeding boilers with feed-water
freed from impurities allows of readily combining with cylindrical or any other
equivalent boilers such devices for freeing feed water from its impurities whose
appliance, otherwise, to the said boilers would have been impossible, or most
difficult, while by means of the adjustable connection, described, of the said boilers
with the high-pressure tubular or other equivalent boiler, a ready appliance of such
purifying devices to boilers of any construction is ensured without there being any
changes required as concerns the construction, foundation or mode of working of
such boilers.
I wish it understood that I do not confine the application of this improved
method to boilers of any particular construction, nor to the manner in which the
high-pressure boiler is provided with the feed-water free from impurities.
.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is.
First. The method of feeding with purified feed-water one or more steam-boilers
of any suitable construction, by combining the said steam boiler or boilers with one
or more tubular or any other equivalent boilers containing the said feed-water
under a higher pressure than that prevailing in the steam-boiler or boilers to be
fed, substantially as, and for the purpose, specified.
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page_text: Second. The combination with one or more tubular or other equivalent boilers
containing water free from impurities, of one or more cylindrical or any other
suitably constructed boilers and a connecting-pipe having one or more shut-off
valves, the water in the said tubular boiler or boilers being under higher pressure
than the water in the said cylindrical boiler or boilers, so that, on opening the said
valve or valves, the required quantity of the water in the tubular boiler will be
forced into the cylindrical boiler, substantially as, and for the purpose, set forth.
Third. The combination, with the depositing-chamber B, of hurdle-work, wire-
grate, sack-cloth or other suitable filtering-inedia, except perforated plates, for
retaining the impurities contained in the fresh feed-water met and carried along by
the circulating mixture of steam and water from the tubular boiler A, substantially
as, and for the purpose, specified.
DLL:
01 st. 1
1004
HASELTINE, LAKE & Co.,
For the Applicant.