Improvements in Boiler Feed Water Heating Apparatus.
Year: 1890

page_text: Date of Application, 14th Aug., 1890
Complete Specification Left, 14th May, 1891-Accepted, 27th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Boiler Feed Water Heating Apparatus.
EDWIN CHARLES URRY of 232 Goswell Road Islington in the County of
Middlesex, Engineer, & GUILLERMO ANTONIO FARINI of Dartmouth Lodge
Perry Vale Forest Hill in the County of Surrey Gentleman do hereby declare the
nature of this invention to be as follows:-
This invention refers to an improved form of apparatus for utilising the waste
heat from tubular steam boilers.
For this purpose the delivery pipe from the feed pump of an engine is taken up
in a vertical or horizontal boiler to the top inside, when it is coiled round
towards the centre of the boiler & is connected to a chamber near the bottom.
On the opposite side of the said chamber another coil is taken off over the coil
above mentioned and passes down on the opposite side of the boiler to the feed
inlet.
The water having been taken by the feed pump from a hot well or other storage
vessel at as high a temperature as possible to pump it, & is then forced forward
through the coiled tube into the chamber above mentioned and from the said
chamber through the top coil down to the feed inlet, a given charge being delivered
on each stroke of the pump and a gradual heating of the water taking place
during its travel through the coils and chamber, the whole being placed over the
tubes where the waste heat passes off hereby causing a steam feed to the boiler.
Dated this 14th day of August 1890.
E. C. URRY.
G. A. FARINI.
COMPLETE SPECIFICATION.
Improvements in Boiler Feed Water Heating Apparatus.
We, EDWIN CHARLES URRY Engineer, and GUILLERMO ANTONIO FARINI,
Gentleman, both of 232 Goswell Road, Islington in the County of Middlesex 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:
Our invention relates to an improved apparatus for utilising the waste heat
from tubular steam boilers as a means for raising the temperature of the feed
water before admission into the boiler, the object thereof being to economically
effect the feeding of the boiler without loss of power or heat.
In order that our invention may be clearly understood, we have appended the
accompanying sheet of drawings in which
Figure 1 is an elevation, partly in section, of a tubular boiler to which the
apparatus is fitted, and Figure 2 is a plan view of the same.
In carrying our invention into effect, we carry the delivery pipe A from the
feed pump, injector or the like, in an upward direction in a vertical boiler
within the external casing, or through the water and steam spaces as shewn, the
said pipe being similarly carried in an horizontal or diagonal direction when
applied to boilers of other forms or types. Said pipe A is coiled in the manner
shewn by B, Figures 1 and 2, any number of convolutions being used, converging
toward the centre of said boiler, and the end of said coil is connected to a
chamber C, which is properly closed by a jointed cover or covers. A delivery
pipe D leads from said chamber directly to the lower part of the water space E
Price 61

page_text: as shewn, which forms the feed inlet. The feed water having been drawn by a
feed pump, injector or other feeding device, from a hot well or other storage vessel
at a high temperature, the degree of which is limited only by the capability of the
feeding device to lift or impel it, it is forced through the tube A into the
chamber C, and from thence through the pipe or tube E into the boiler, a pre-
determined charge being delivered by each stroke of the pump, or action of an
injector or the like in a given period of time.
The feed water injected in this manner becomes gradually heated during its
passage through the water and steam spaces, by means of the pipe A and is further
raised in temperature by the coiled portion of said pipe B, the surface of which is
exposed to the waste heat from the products of combustion above the tube plate a
of the boiler and the chamber C is also directly over said tube plate, and the
action may be described as follows:―
The feed water having been raised to a high degree of temperature in the hot
well or other reservoir, is, by the arrangement of the pipes A. B. and D, with the
chamber C, heated to a degree nearly or approximately equal to that of the
temperature of the water and steam in the boiler, so that the loss of heat and
power due to an ordinary water feed-even in cases where separate heaters are
employed, is avoided, and the waste heat from the burning fuel is utilised.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that. what we
claim is
First. The method of, and means for superheating feed water before delivery
into a boiler, substantially as herein described with reference to the drawings.
Second. In a feed heating apparatus as referred to in the foregoing claim the
combination of an inlet pipe A, coil B chamber C and outlet or delivery pipe D
substantially as herein described and shewn by the drawings hereto appended.
Third. In a feed heating apparatus as referred to in the preceding claim, the
arrangement of parts whereby the waste heat is utilised within the boiler shell and
above the tubes, substantially as herein described and shewn by the appended
drawings.
FREDA. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.