Improvements in and connected with Apparatus for Heating or Evaporating Liquids.
Year: 1891

page_text: Date of Application, 10th Nov.; 1891
Complete Specification Left, 10th Aug., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in and connected with Apparatus for Heating or
Evaporating Liquids.
1, DONALD BARNS MORISON, of Hartlepool Engine Works, Hartlepool, in
the County of Durham, Engineer, do hereby declare the nature of this invention to
be as follows:
My invention relates to improvements in and connected with apparatus for
heating or evaporating liquids by means of steam and is especially applicable for
evaporating sea water for the supply of auxiliary feed water to marine boilers.
The heating tubes are arranged so as to form sets each set being connected to
one common supply and one common discharge, the connections being made one
above or beyond another and held or jointed together by means of one set of nuts
or clamps.
Where an engine is fitted with a steam jacket I connect therewith the heating or
evaporating apparatus so as to take the steam from the jacket thereby increasing
the efficiency of the jacket by promoting rapid circulation of steam within it and
free discharge of the water of condensation. Such steam and water pass into the
evaporator heating tubes and thence in the form of water to a hotwell or other
convenient place.
The heating tubes may be of any suitable section and the coils of any convenient
shape. One method of arrangement with flat coils is to form the common supply
and discharge by two tubes arranged with ports throughout their length. Each
end of each coil is fitted with a socket which passes over the tubes and is opposite
a port. If the tubes are vertical the sets of coils are placed one above another, the
sockets of each forming joints on their neighbours. The top of each tube is
arranged for a nut which holds the various sockets together and on the removal of
the nuts on the supply and discharge tubes each set of coils may be easily taken off
thus enabling overhauling for scaling purposes to be rapidly and simply effected.
Instead of there being tubes within the sockets the sockets themselves may when
fitted together form a tube the upper one being clamped down to the base or other
part of the apparatus by any suitable means. The coils may be arranged vertically,
horizontally, or otherwise, depending upon the nature of the design, and the dome
or upper portion of the apparatus may be removable, or the supply and discharge
tubes may be arranged horizontally and a door be placed opposite so that when it
is opened the nuts on the tubes can be taken off and the various sets of coils be
removed.
Dated this 10th day of November 1001
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and_connected with Apparatus for Heating or
Evaporating Liquids.
I, DONALD BARNS MORISON of Hartlepool Engine Works, Hartlepool, 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 :-
My invention relates to improvements in and connected with apparatus for
heating or evaporating liquids by means of steam, and is especially applicable for
evaporating sea water for the supply of auxiliary feed water to marine boilers.
Paving I

page_text: According thereto the heating tubes are arranged to form sets, each set being
connected to one common supply and one common discharge, the connections being
made one above or beyond another and held or jointed together by means of one
set of nuts or clamps.
The heating tubes may be of any suitable section and the coils of any convenient
shape. The coils may be arranged vertically, horizontally or otherwise, depending
upon the nature of the design, and the dome or upper portion of the vessel in
which they are arranged may be removable, or the supply and discharge tubes may
be arranged horizontally and a door be placed opposite them, so that when the
door is opened the nuts on the tubes can be taken off and the various sets of coils
removed.
In the accompanying drawings,
Fig. 1 shows partly in elevation and partly in section a set of heating coils
with sockets arranged upon supply and discharge tubes according to this
invention.
Fig. 2 is a plan of one of the tubes; and
Fig. 3 is a sectional plan taken in two different planes of a socket and one of the
tubes by which it is carried.
Fig. 4 is a plan shewing a set of heating tubes or coils and the supply and
discharge tubes to which they are connected.
1 and 2 are the supply and discharge tubes respectively, each formed with a
series of ports 3 throughout its length. 4, 4 are the heating tubes or coils of which
only one set is shown in Fig. 4 arranged within the evaporator casing 5 the top of
which is there shown removed. Each coil 4 is fitted at one end with a socket 4*
that surrounds the supply tube 1 with which it is in communication through the
ports 3, and at the other end with a socket 4' that surrounds the discharge tube 2 with
which it is in communication by means of the ports 3 in that tube.
The drawings shew the supply and discharge tubes arranged vertically, the
heating coils of the set being placed one above another, and so that the sockets 4° 4°
of each coil form steam tight joints with the adjacent sockets.
Each of the tubes 1 and 2 is provided at the top with a screw threaded extension 6
to receive a nut 7 by means of which a cap piece 8 can be forced upon the
uppermost socket 4° or 4 for the purpose of forcing the several sockets of a series
closely together. By removing the two nuts 7, the heating tubes or coils 4 may be
easily taken off the pipes 1 and 2, thus enabling them and the tubes 1 and 2 to be
rapidly and simply cleaned.
Where an engine is fitted with a steam jacket I connect therewith the evaporating
apparatus so as to take the steam from the jacket, thereby increasing the efficiency
of the jacket by promoting rapid circulation of steam within it and free discharge
of the water of condensation. Such steam and water pass into the evaporator
heating tubes and thence in the form of water to a hot well or other convenient
place.
Fig. 5 is a side elevation showing an evaporator 9 thus connected to the steam
jacket 10 of a steam engine cylinder 11 by means of a pipe 12 which leaves the jacket
at its lowest part. The action of the steam is as follows :-It enters the
jacket at 13 and having imparted some of its heat to the cylinder, it passes, together
with any water of condensation formed within the jacket, into the pipe 12 and
thence into the heating tubes or coils of the evaporator 9 where the heat thereof is
utilized to evaporate salt or impure water contained therein. The water of
condensation is finally conducted by a pipe 13* to a hotwell where it mixes with
the feed water or to any other convenient place.
By these means a rapid circulation of the steam through the jacket is effected
and accumulation in the jacket of water of condensation prevented, thereby greatly
increasing the efficiency of the jacket, and the heat in the steam and water discharged
from the jacket is utilized in an economical simple and convenient manner, the
combined apparatus being practically automatic in its action.
Fig. 6, shews an evaporator connected to the high pressure and intermediate

page_text: pressure cylinder steam jackets of a triple expansion engine. In this arrangement
the steam for both of the jackets 10 and 10 enters the high pressure jacket 10 by
the pipe and valve at 13. The water formed within the jacket 10 is drained off by
means of a valve or cock 14 placed at its lowest part. The steam for the
intermediate jacket 10" is taken from the high pressure jacket 10 by means of a
pipe 15 which may be provided with a reducing valve 16 to limit the steam pressure
in the second jacket.
The water of condensation from the jacket 10, and the steam and water of
condensation from the jacket 10" are conducted by the pipe 12ª to the evaporator
inlet pipe 12 whence they are led into the heating tubes or coils of the evaporator 9
and their heat utilized as in the arrangement described with reference to Fig. 5.
Instead of a valve or cock 14, a steam trap may be fitted to the jacket 10 so
that only water will be allowed to escape from the jacket at that point.
With the above described arrangement, a thorough circulation of the steam in
the jackets 10, 10" is ensured, especially in the first jacket 10, the efficiency of
which in ordinary practice is usually low, owing to the small difference between the
temperature of the steam in the jacket and of that in the cylinder, and the heat in the
steam and water circulated through the jackets is economically utilized by being
transferred to the water contained in the evaporator, the water of condensation
being finally drained into the hotwell, or otherwise mixed with the feed water.
Fig. 7 is a still further development of the same general arrangement. In this
case the three steam jackets of a triple expansion engine are shewn connected
together and to the evaporator 9.
The steam for the three jackets 10, 10° and 10° enters the first jacket 10 at 12.
The water formed within the jacket 10 drains away by the pipe 14" which is shewn
fitted with a steam trap 17 that allows only water of condensation to pass to the pipe 12ª
and thence to the evaporator. The steam for the second jacket 10 is taken from
the first jacket 10 by means of the pipe 15 which is shewn fitted with a reducing
valve 16 as in Fig. 6. The second jacket is fitted with a steain trap 17ª which also
only allows water of condensation to pass into the pipe 12ª and thence to the
evaporator. The third jacket 10' is connected in like manner with the second steam
jacket, but has no steam trap as both steam and water of condensation pass from it
through the pipe 12ª to the evaporator 9.
In a similar manner four or more cylinder steam jackets could be connected
together, and the maximum circulation of steam and freedom from the water of
condensation ensured.
Having now particularly described and ascertained the nature of the said.
invention and in what manner the same is to be performed I declare that what I
claim is :-
1. In apparatus for heating or evaporating liquids, supporting and jointing the
heating tubes or coils to one common perforated supply pipe and one common
perforated discharge pipe, the connections being made one above or beyond another
and held or jointed together by means of nuts or clamping devices substantially as
hereinbefore described with reference to and shown in Figs. 1, 2, and 3 of the
drawings annexed.
2. Connecting an evaporator or apparatus for evaporating salt or other impure
water for the supply of auxiliary feed water to boilers, to a steam engine cylinder
jacket so that the heating steam will be caused to pass rapidly through the said
jacket and water of condensation formed therein will be rapidly drained away, thus
preventing accumulation of water in and securing the utmost and certain efficiency
of the jacket so long as the evaporating apparatus is working, and also utilizing in
an economical and simple manner the heat in the steam and water discharged from
the said jacket substantially as hereinbefore described with reference to and shown
in Figure 5 of the drawings annexed.
3. Connecting an evaporator or apparatus for evaporating water to two or more
steam engine cylinder jackets that are connected with each other, and each of which,

page_text: excepting the last, is provided at its lowest part with a valve or cock such as 14,
or with a steam trap such as 17 arranged to pass only the condensed water formed
in the jacket with which it is connected, the uncondensed steam from one jacket
being allowed to pass, it may be through a reducing valve, into the next jacket
and so on until the last jacket is reached, the uncondensed steam from the last
jacket, together with the water of condensation from all the jackets being discharged
into the said evaporating apparatus substantially as hereinbefore described with
reference respectively to and shown in Fig. 6 and in Fig. 7 of the drawings annexed
for the purposes specified.
Dated this 10th day of August 1892.
W. LLOYD WISE,
Per W. Cross,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.