Improvements in or connected with Feed Water Heaters.
Year: 1891

page_text: Date of Application, 22nd Oct., 1891
Complete Specification Left, 22nd July, 1892-Accepted, 27th Aug, 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Feed Water Heaters.
I, FRANKLIN HOOKING, of 7, York Street, Liverpool, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
The type of apparatus to which this invention relates, are those which have for
their object the heating of the feed water, mainly for steam generators, the heating
being effected by surface contact with steam filled tubes, ways, or coils contained in
a vessel.
For example, such a feed water heater may consist of a vertical vessel provided
with a series of tubes, spiral ways, or coils of tubes, held between diaphragms or
equivalent connections provided at the top and bottom of the vessel, the upper ends
of the tubes, ways, or coils, being open to a steam inlet, and the lower ends being
open to an outlet or drain through which the water condensed from the steam
escapes or is led off. The vessel is provided with an inlet and an outlet passage
for the feed water which flows through or is forced through the vessel by a feed
pump, the water being heated by surface contact with the tubes, ways, or coils,
which are steam filled.
I provide a chamber at the bottom of the vessel and below the water outlet, at
the lower ends of the tubes, ways or coils, or part of the apparatus. When
diaphragms are used the connecting parts of the tubes, ways, or coils may be
prolonged to connect to one of said diaphragms. When required, the diaphragms
are suitably stayed to the ends of the vessel. This chamber serves as a collecting
chamber or trap for collecting sludge or foreign matter which may find its
way into the vessel with the feed water. A door or cock or valve is provided
at the bottom of the chamber for the purpose of removing the sludge by blowing
through, or otherwise.
Dated this 21st day of October 1891.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with Feed Water Heaters.
I, FRANKLIN HOCKING, of 7, York Street, Liverpool, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
The type of apparatus to which this invention relates, are those which have for
their object the heating of the feed water, mainly for steam generators, the heating
being effected by surface contact with steam filled tubes, ways, or coils contained
in a vessel.
For example, such a feed water heater may consist of a vertical vessel provided
with a series of tubes, spiral ways, or coils of tubes, held between diaphragms or
equivalent connections provided at the top and bottom of the vessel, the upper ends
of the tubes, ways, or coils, being open to a steam inlet, and the lower ends being
open to an outlet or drain through which the water condensed from the steam
escapes or is led off. The vessel is provided with an inlet and an outlet passage
for the feed water which flows through or is forced through the vessel by a feed
LD017

page_text: pump, the water being heated by surface contact with the tubes, ways, or coils,
which are steam filled.
.
I provide a chamber at the bottom of the vessel and below the water outlet, at
the lower ends of the tubes, ways or coils, or part of the apparatus. When
diaphragms are used the connecting parts of the tubes, ways, or coils may be
prolonged to connect to one of said diaphragms. When required, the diaphragms
are suitably stayed to the ends of the vessel. This chamber serves as a collecting
chamber or trap for collecting sludge or foreign matter which may find its way into
the vessel with the feed water. A door or cock or valve is provided at the
bottom of the chamber for the purpose of removing the sludge by blowing through,
or otherwise.
In the drawings which serve to illustrate my invention Figure 1 is a sectional
elevation, and Figure 2 a plan of my improved feed heater.
Referring to the example illustrated, a is a cast iron or other case of the
apparatus, having at its upper end a branch 6 for the inlet of the water or other
liquid to be heated, and at its lower part a branch c for the outlet of the heated
water. d are the heating conduits, consisting of inner and outer tubes of corrugated
form, such as shown, and having at their upper ends T shaped connecting nipples e,
and at their lower ends similar connecting nipples f, said nipples being fixed by
nuts, or otherwise, to the diaphragms g and h, respectively. These diaphragms
come between, and are held in position by, the upper and lower covers i and j and
the flanges of the case a. Into the upper cover i steam is admitted through
the aperture or hole ', and the condensed water carried away from the lower
one by the aperture or hole j¹, the steam being conveyed to the cover i
and the condensed water carried away from j by suitable supply and carrying off
pipes fixed thereto.
It will be seen that the outlet branch c for the heated water stands up from or
above the lower diaphragm ha considerable distance, so that a quiescent chamber
is provided between the level of this outlet and the bottom of the apparatus: the
heating tubes & being also stopped at the level of this outlet c. This chamber is
designated K. K.K. K., and forms a quiescent vessel into which solid or foreign
matters in the water being heated are deposited, and whereby they are retained.
This chamber therefore constitutes a mud or sludge chamber, meaning thereby a
chamber in which all solid or foreign matters are thrown down and collected. The
removal of such matters from the chamber K. K. K. K. is effected by removing
the door and withdrawing said deposited matters by hand or by any other suitable
means. The door may be fastened by bolts and nuts or by other suitable
known means.
The operation of the heater is as follows:-
Steam being admitted into the case or cover i above the diaphragm 9 by the
inleti, passes by way of the hollow nipples e into the annular space formed between
the outer and inner tubes forming the heating surface or pipes d, and passes down
through this space towards the lower part of the heater. The water to be heated
also enters at the top through the branch and passes downwards around outside,
and through the inside, of the conduits d towards the lower part of the apparatus.
The effect of the two fluids, one upon the other, is, of course, that a transference
of heat takes place, the water becoming heated, and the steam cooled and
condensed, the latter escaping as condensed water from the lower cover j, whilst
the former, that is the water heated by the steam, leaves by the branch c; and at the
same time by the downward direction of motion of the water being heated, and
the position of the chamber K. K. K. K., the solid and foreign matters of the
water are thrown down and caught and deposited in said chamber below the
branch c; while the hot water, ridded of foreign and solid matters, and clear,
passes away by such branch at the higher level.
"
m represents a thermometer disposed on the outlet branch o and connected
therewith, whereby the temperature of the outgoing water can be ascertained
at will.

page_text: The tubes d, nipples e, and diaphragms 9 h, herein shown, are all of known forms
or construction, and therefore no claim per se is made to them; and instead of them
I may use other known suitable forms of tubes or heating surface, and connections,
if desired, without departing from this invention. Moreover the particular con-
struction or form of casing a shown, and parts connected therewith, may be
modified to suit different applications of the invention, and requirements; and the
chamber K. K. K. K. may be made separate from the casing a and be suitably
connected thereto; also the water inlet and outlet may be reversed.
Having now particularly described and ascertained the nature, object and
purposes of my invention and how the same may be performed, I declare that
what I claim is :-
(1.) A feed water heater, comprising a chamber (such as described); tubes or
heating surface (such as specified, or referred to herein) disposed within said
vessel; and a chamber disposed at the lower part of said vessel and serving as the
receptacle or depositing chamber for solid and foreign matters from the liquid
heated; operating substantially as herein set forth.
(2.) The feed water heater, consisting particularly of the vessel a, with inlet b,
and water outlet ; heating tubes d, with inlet and outlet ef and diaphragms g h;
and chamber K. K. K. K., set forth with reference to the drawings.
n
01
CT1
1000
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.