IMPROVEMENTS CONNECTED WITH CONDENSING EXHAUST STEAM AND HEATING FEED WATER OF HIGH PRESSURE STEAM ENGINES
Year: 1884

page_text: I JOHN GOUCHER of 166 Fleet Street in the City of London Agricultural
Engineer and Threshing Machine Beater Manufacturer, do hereby declare the
nature of my said invention for IMPROVEMENTS CONNECTED WITH CONDENSING
EXHAUST STEAM AND HEATING FEED WATER OF HIGH PRESSURE STEAM ENGINES,
to be as follows:-
My improvements consist in injecting or conducting the feed water of the boiler
of the high pressure steam engine into the exhaust pipe of the said engine at the
elbow as near the cylinder as convenient or it may be let into the said pipe at any
other point, the said feed water coming in contact and mixing therein with the
exhaust steam and being carried by and in company with the said steam into a
cistern and on its passage the steam becomes condensed by the water and the water
becomes heated by the steam to a greater extent than has hitherto been done."
The steam and heated water are deposited in the said cistern which is kept about
half full of water and indicated by a water guage fixed thereto in the ordinary
way. An outlet pipe is fixed to the lid or upper part of the cistern which allows
so much of the steam as may not be condensed to escape.
The said cistern in stationary engines is placed as near to the chimney end of
the boiler as convenient and an injector of a very simple construction is fixed
to the said boiler into which the heated water from the cistern is conveyed by a
pipe which is made with a tap in it by which the supply can be regulated. The
exhaust steam is discharged upon the water or into the steam space into the cistern
which being between the water and the atmosphere as will be understood at each
discharge of the exhaust puts pressure upon the water which aids the injector in
forcing the said water into the boiler; By this method the pump and the usual
power required to work it is thus dispensed with, or the pump if prefered may
be used for forcing the water from the cistern into the boiler.
In the portable type of engine the action is the same but I place the cistern
upon the smoke box which is so constructed that it forms the lower part of the
chimney and admits of the smoke and spent heat from the tubes or flues passing

page_text: through it. The cistern which is kept about half full of water and the feed water
being put into the exhaust pipe and coming in contact and mixing therein with
the exhaust steam and being carried by the said steam into the cistern the steam
becomes condensed and the water heated as before described there being an outlet
pipe which allows the uncondensed steam to escape into the chimney.
The injector is fixed to the end of the boiler and to the under side of the cistern
inside the said smoke box the water being thereby conveyed into the injector and
forced into the boiler the supply being regulated by a tap.

page_text: I JOHN GOUCHER of 166 Fleet Street in the city of London, Agricultural
Engineer and Threshing Machine Beater Manufacturer. do hereby declare, the
nature of my said invention for "IMPROVEMENTS CONNECTED WITH CONDENSING
EXHAUST STEAM AND HEATING FEED WATER OF HIGH PRESSURE STEAM ENGINES"
and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:
My improvements consist in injecting or conducting the feed water of the boiler
of the high pressure steam engine into the exhaust pipe of the said engine at the
elbow as near the cylinder as convenient or it may be let into the said pipe at any
other point, the said feed water coming in contact and mixing therein with the
exhaust steam and being carried by and in company with the said steam into a
cistern and on its passage the steam becomes condensed by the water and the
water becomes heated by the steam to a greater extent than has hitherto been
done. The steam and heated water are deposited in the said cistern which is kept
about half full and indicated by a water gauge fixed thereto in the ordinary way.
An outlet pipe is fixed to the lid or upper part of the cistern which allows so much
of the steam as may not be condensed to escape.
I prefer that the said cistern in stationary engines should be placed as near to
the end of the boiler as convenient at the chimney end and an injector be fixed
to, the said boiler into which the heated water from the cistern is conveyed by a
pipe which is made with a tap or valve in it by which the supply can be regulated.
The exhaust steam is discharged upon the water or into the steam space in the
cistern which being between the water and the atmosphere as will be understood
at each discharge of the exhaust puts pressure upon the water which aids the
injector in forcing the said water into the boiler. By this method the pump and
the usual power required to work it is thus dispensed with or the pump may be
used for putting the water from the cistern into the boiler and also for putting the
feed water into the exhaust pipe where it has to be raised any distance.
In the portable type of engine the action is the same but I prefer to place the
cistern upon the smoke box which is so constructed that it forms the lower part of.
the chimney and admits of the smoke and spent heat from the tubes or flues passing
through it. The cistern which is kept about half or one third full of water and
the said feed water being put into the exhaust pipe and coming in contact and
mixing therein with the exhaust steam and being carried by the said steam into
the cistern the steam becomes condensed and the water heated as before described
there being an outlet pipe which allows the uncondensed steam to escape into the
chimney.
The injector is fixed to the end of the boiler and to the underside or bottom of
the cistern inside the said smoke box the water being thereby conveyed into the
injector and forced into the boiler the supply being regulated by a tap or valve as
before stated.
My invention will be understood by referring to the annexed drawings. In the
example, Figure 1 shows a plan of an arrangement suitable for stationary engines
in which A is the exhaust steam pipe from an engine cylinder the exhaust steam
passing in the direction shown by the arrow.
In an elbow B of said exhaust pipe A 1 fit a small pipe with a nozzle C leading
from a tank or other water receptacle which may be placed above or below the
level of the elbow as found convenient.

page_text: .
.
Beyond the elbow B the exhaust pipe A is extended to the cistern D into which
the water from the water pipe C and the water formed from the condensed steam
are forced along with the portion of steam not condensed to charge said cistern D
to a given height which can be determined by the glass gauge as shown at Figure 2
which is a side elevation of the cistern D. A further condensation takes place in
the cistern D and any steam remaining is allowed to escape by the outlet pipe E.
I prefer arranging the cistern in this manner in order that the water therein may
be raised to as high as temperature as possible before being transferred to the
boiler F by means of any suitable injector or pump from the pipe G see Figure 3.
Figure 4 is a part sectional elevation. Figure 5 a section on line a, b, and
Figure 6 a plan of the bottom of the cistern D which show an example of applica
tion of my invention to a portable engine in which the water may be obtained
from a tank or other receptacle above or below the level of the nozzle C the water
pipe I being provided with a tap or valve J which can be adjusted to supply the
requisite quantity of water to the cistern D.
.
In the portable type of engine I purpose that the upper end of the exhaust
pipe A should be curved, as shown on Figure 5; in the cistern D and by the
partition K put in the cistern close thereto the steam in the said cistern A is
made to travel round the chimney L before it can escape by the outlet or escape
pipe E which according to this arrangement terminates in the chimney L.
In the drawing of the portable type of engine the exhaust pipe is shown at
Figures 4 and 5 brought down to near the middle of the boiler thence running to
the smoke box and up into the cistern but it may be carried on the top of said
boiler outside direct into the cistern or it may be carried along inside the boiler
into the smoke box before entering the cistern.
The examples thus given are sufficient to explain the application of my invention
and how I intend to carry it into effect the type and design of the engine regulating
more or less the position of the exhaust pipe and of the water pipe fixed therein.
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 improved means of utilizing the exhaust steam of the bigh pressure
steam engine for heating the feed water of the boiler as herein set forth
and substantially as shown by the annexed drawings.
Secondly. The employment of a water pipe by which the feed water is conveyed
into the exhaust pipe of an engine, said water pipe furnishing water to be
heated by the exhaust steam which said steam becomes condensed or
partially so and the said steam and water are thus carried in combination
to and deposited in a cistern as the feed water for the boiler as set forth
and shown by the annexed drawings.
The 28th day of November 1884