Improvements in Feed-water Heaters.
Year: 1888

page_text: Date of Application, 24th Sept., 1888
Complete Specification Left, 24th June, 1889-Accepted, 27th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Feed-water Heaters.
I, THOMAS WILLIAMS BAYES of Brookside House, Birtley, in the County of Durham
Engineer do hereby declare the nature of this invention to be as follows:-
The feed water to be heated is by constant supply or special feed or donkey pump
supplied to the feed-water heater through a pipe, the inlet being regulated automatically
by a float and regulating valve in the receiver containing the heater, and which may
be of any suitable form, say a cylindrical pipe or an old boiler.
The heater proper
arranged therein, consists essentially of the water inlet pipe and regulating valve, the
float connected thereto, and a pipe for admitting the exhaust steam; the feed-water
admitted from the valve being arranged to flow along the top of the exhaust steam
pipe or part of same so as to become partly heated, for which purpose the said pipe
has a longitudinal flange along each side, to form a trough for the water to flow in.
At the outlet end of the exhaust steam pipe I provide a deflecting appliance, so that
the water running down over the end of the trough in a thin stream or streams shall
meet a thin sheet of the steam at right angles and drop down right through it thus
effectually condensing the steam and taking up its heat.
A suitable form of apparatus is constructed as follows:-The water inlet pipe
entering the receiver vertically is fitted with a flat rubber or other valve mounted on
a vertical stem or rod which, at its lower end is jointed to a lever having its fulcrum
on one side of the said joint and the float attached on the opposite side or end of the
lever. To the end of the lever, on the first named side, I joint a rod which passes up
through a stuffing-box in the receiver and is loaded according to the working pressure
of the feedwater entering the receiver. To the upper outer end of this rod I
connect an index hand to show the water level on a divided scale. The fulcrum of
this lever is on the bottom of the exhaust steam pipe which enters the receiver
horizontally and is formed with a rectangular part shallow in depth and of com-
paratively great width, the top side being made to slant down towards the exit end
and provided with a flange on each side so as to form a trough for the cold feed-water
to flow along in from the regulating valve, the casing of which may be in one casting
therewith. Or the trough part may be made of thin copper. Opposite the exit end
of this pipe I provide a deflecting plate to compel the water to flow down in a thin
flat sheet which meeting the exhaust steam at right angles and also in a thin sheet
produces thorough condensation of the steam and the imparting of high heat to the
feed-water, which has received some heat previously by surface contact with the top
of the exhaust steam pipe. In order to detach any scale that may form in the trough,
I provide a small pipe and cock for injecting cold water thereupon at times while
hot, the feed inlet and the exhaust steam having been previously turned off; by this
means by the sudden contraction the scale will crack and become detached and may
be removed through a hand-hole provided on the receiver. The latter is also provided
with a vapour outlet pipe at top, and with a hot feed outlet pipe which takes its
supply from the water in the receiver near the water level.
D
1000
THOMAS WILLIAMS BAYES.
By Jensen & Son,
77, Chancery Lane, London, W.C., Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Feed-water Heaters.
I, THOMAS WILLIAMS BAYES of Brookside House Birtley, in the County of Durham,
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 feed water to be heated is by constant supply or special feed or donkey
pump supplied to the feed water heater through a pipe, the inlet being regulated
automatically by a float and regulating valve in the receiver containing the heater,
and which may be of any suitable form say a cylindrical pipe, an old boiler or a
specially constructed tank to suit individual requirements. The heater proper, arranged
therein, consists essentially of the water inlet pipe and regulating valve, the float
connected thereto, and a pipe for admitting the exhaust steam; the feed-water
admitted from the valve being arranged to flow along the top of the exhaust steam
pipe or part of same so as to become partly heated, for which purpose the said pipe
has a longitudinal flange along each side, to form a trough for the water to flow in.
At the outlet end of the exhaust steam pipe I provide a deflecting appliance, so that
the water running down over the end of the trough in a thin stream or streams shall
meet a thin sheet of the steam at right angles and drop down right through it, thus
effectually condensing all or part of the steam and taking up its heat.
A suitable form of apparatus is constructed as shewn on the accompanying
drawings Figure 1 being a sectional side elevation. Fig. 2 a sectional end
elevation to a larger scale and Figs. 3 and 4 detail views in section and plan
respectively.
The water inlet pipe A enters the receiver B vertically or in the case of a square
receiver the water by preference enters at the side to give facility for removal of the
cover. The pipo A is fitted with a flat rubber or other valve C mounted on a vertical
stem or rod c which slides in and is guided in a tube or socket which prevents
the entry of the water into the pipe G¹ and the formation of scale at this place
which might prevent the free working of the rod c. This latter is at its lower end jointed
to a lever D having its fulcrum d on one side of the said joint and the float E
attached on the opposite side or end of the lever. To the end of the lever on the
first named side, I joint a rod F which passes up through a socket M or a stuffing
box in the receiver B and is loaded by weights according to the working pressure
of the feed water entering the receiver. To the upper outer end of this rod I may
connect an indox hand to shew the water level on a divided scale. The fulcrum d
of the lever D is on the bottom of the exhaust steam pipe G which in this case
enters the receiver horizontally and is formed with a rectangular part G₁ shallow in
depth and of comparatively great width, the top side being made to slant down
towards the oxit end and provided with a flange 91 on each side so as to form a
trough for the cold feed water to flow along in from the regulating valve C the
casing C of which may be in one casting therewith.
The trough may be provided with small steps or terraces g² in order to promote
the spreading of the water all over the surface of the trough. The trough part may
be made of thin copper instead of cast iron. Opposite the exit end. of this pipe G¹
I provide a deflecting plate h to compel the water to flow down in a thin flat sheet
which meeting the exhaust steam at right angles and also in a thin sheet produces
thorough condensation of the steam and the imparting of high heat to the feed water,
that has previously received some heat by surface contact with the top of the exhaust
steam pipe.
The deflecting plate h may be made adjustable to suit the head or force
of the water supply and other circumstances. In order to detach any scale that may
form in the trough I may provide a small pipe and cock for injecting cold water
thereupon at times while hot the feed inlet and the exhaust steam having been
previously turned off; by means of the sudden contraction the scale will crack and
become detached and may be removed through a hand hole provided on the receiver.

page_text: The latter is also provided with a vapour outlet pipe I at top and with a hot feed
outlet pipe K which takes its supply from the water in the receiver near the water
level. L represents a valve or cock of ordinary construction serving to remove the
sludge and provided with a long spindle which goes through a stuffing box m
on top.
The receiver B may be of any suitable form to suit circumstances or locality;
sometimes as stated an old disused boiler or closed tank may be conveniently applied
as it is not exposed to internal pressure in this apparatus.
The construction of my heater is such that scale forming or accumulating in any
part can be easily removed. Sometimes I provide a scum pan or pipe and cock
which draws off impurities and oily parts from the surface of the water in the heater
at certain intervals while stopping the water inlet and steam inlet.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A feed water heater consisting essentially of an exhaust supply steam pipe
which enters a receiver and is provided with deflecting appliance at its outlet end
and upon the flat trough shaped top of which the cold water supply is received which
meets the exhaust steam at the outlet end and commingles therewith so as to condense
it and to be heated thereby, the cold water inlet being regulated by a valve which
is automatically regulated by a float substantially as set forth.
.2. The construction of feed water heater described with reference to the
accompanying drawings.
3. The trough shaped part G¹ with flanges glas shewn and described.
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11
قييم
1
1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.