Improvements in Apparatus for Evaporating Water or Condensing Steam.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Evaporating Water or Condensing
Steam.
I, 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 apparatus for evaporating water by means of steam
or for condensing steam by means of water as in the case of apparatus on ship-
board for the production of fresh water for use as auxiliary feed water for boilers
or for the condensation of steam from the winches or other auxiliary machinery.
My invention consists in the combination and arrangement of parts in an
improved manner in order to obtain a simple, compact and efficient apparatus.
The lower portion of the containing vessel is in the form of a horizontal
cylinder similar in general design to the lower part of the containing vessel
as described in my Letters Patent No. 9548 of 1893 and on this lower portion is
jointed a vertical cylindrical vessel similar in general design to that described
in my Letters Patent No. 9041 of 1889 with the exception that there is a free
communication between the upper and lower vessels. The coils in the lower
vessel may be arranged as in my Patent No. 9548 of 1893 and the coils in the
upper vessel in a similar manner or as in my Patent No. 9041 of 1889.
"When used as an evaporator steam may flow through the lower coils only or
first through the upper coils and then through the lower coils the connections
being suitably arranged for the purpose. When used as a condenser the steam
to be condensed may be admitted so as to be in contact with the outer surfaces
of the coils and the condensing water within the coils or the arrangement may be
reversed, that is to say the steam to be condensed may be admitted to the inside
of the coils with the condensing water in contact with the outer surfaces.
Access to the lower joints of the upper coils to the base may be obtained through
the lower vessel after withdrawing the lower coils and access to the top of the
upper coils may be obtained by fitting the dome with a removable cover, or the
upper cylindrical dome may be lifted for the purpose of completely or partially
exposing the upper coils.
300
COMPLETE SPECIFICATION.
Improvements in Apparatus for Evaporating Water or Condensing
Steam.
I, DONALD BARNS MORISON, of Hartlepool Engine Works, Hartlepool, in the
County of Durham, Engineer, do hereby declare the nature of this invention
Price 8d1

page_text: 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 apparatus for evaporating water by means of steam
or for condensing steam by means of water as in the case of apparatus on ship-
board for the production of fresh water for use as auxiliary feed water for boilers
or for the condensation of steam from the winches or other auxiliary machinery.
My invention consists in the combination and arrangement of parts in an
improved manner in order to obtain a simple compact and efficient apparatus.
The lower portion of the containing vessel may be in the form of a horizontal
cylinder similar in general design to the lower part of the containing vessel
as described in my Letter's Patent No. 9548 of 1893 and on this lower portion is
jointed a vertical cylindrical vessel similar in general design to that described
in my Letters Patent No. 9041 of 1889 with the exception that there is a free
communication between the upper and lower vessels. The coils in the lower
vessel may be arranged as in my Patent No. 9548 of 1893 and the coils in the
upper vessel in a similar manner or as in my Patent No. 9041 of 1889.
When used as an evaporator steam may How through the lower coils only or
first through the upper coils and then through the lower coils, the connections
being suitably arranged for the purpose. When used as a condenser the steam
to be condensed may be admitted so as to be in contact with the outer surfaces
of the coils and the condensing water within the coils or the arrangement may be
reversed, that is to say the steam to be condensed may be admitted to the inside
of the coils with the condensing water in contact with the outer surfaces.
Access to the lower joints of the upper coils to the base may be obtained through
the lower vessel after withdrawing the lower coils and access to the top of the
upper coils may be obtained by fitting the dome with a removable cover, or the
upper cylindrical dome may be lifted for the purpose of completely or partially
exposing the upper coils.
In the accompanying drawings Fig. I. shows a form of my invention in front
elevation partly in section and with the door removed to expose the coils. Fig. II.
is a side elevation of the same apparatus whilst Figs. III., IV. are plans, Fig. III.
with the cover removed to expose the upper coils and Fig. IV. a section through
the lower or containing vessel some of the mountings being suppressed for clear-
ness. The numbers in the various figures correspond. In the containing vessel 1
with door 2 are mounted, on the inlet and outlet tubes 3 and 4 and trunnions 5, 6,
the heating or cooling coils 7 the general arrangement being similar to that
described in my Letters Patent No. 9548 of 1893. At the upper extremity of 1
is attached the base 8 arranged with a chamber 9 forming the inlet to the top
coils by means of the branch 9" and valve 9b a chamber 10 forming the outlet
from the top coils through the valve 10" and pipe 10b and a chamber 11 forming
the steam outlet through the pipe 11" and valve 11b. On the chambers 9, 10 are
mounted the coils 12, 12, arranged in pairs, which together with the outlet
pipe 11 are enclosed by the dome 13 and cover 14 the arrangement being similar
to that described in my Letters Patent No. 9041 of 1889 with the exception that
the base 8 is open at the bottom and there is free communication between the
upper and lower coils. The base 8 is additionally provided with a branch 15 and
valve 15 for the admission of exhaust steam. The dome is fitted with safety
valve, pressure gauge and the usual mountings. On the outside of the containing
vessel and in communication with the trunnions 5 is a branch piece 5" to which
is attached the steam or water valve 5" and the steam inlet valve 5º. In com-
munication with the outlet trunnion 6 is a valve and cock 6b and the containing
vessel is further provided with water inlet valve 16 and two way cock 17 arranged
with branches 17, 17. There are also the usual mountings consisting of water
gauge 18 and salinometer cock 19.
When the apparatus is used for evaporating water by means of steam, as for
example for the production of fresh water for use as auxiliary feed water for
boilers, the valve 5° is opened and the valve 5b closed steam being admitted to the

page_text: coils 7 through the trunnion 5 and inlet tube 3, the drain from the coils being
discharged through the outlet tube 4 trunnion 6 and cock 6b, the valve 6 being
closed. The salt water to be evaporated enters at the valve 16 and the steam
generated in the evaporator escapes by the open pipe 11ª through the chamber 11
and valve 11 the valves 9b and 10° being closed as is also the valve 15. The
brine is discharged through the branch 17" of the two way cock 17.
When the apparatus is used as a condenser, as for example condensing the
steam from the winches and other auxiliary machinery on ship board, the steam
inlet valve 5 is closed also the drain from coils cocks 6b and outlet valve 11b. The
valves 5h 6" 9" 10" are opened and water admitted to the top coils 12, 12" through
the branch 9" and chamber 9, returning through the chamber 10 and valve 10" to
the discharge pipe 10". At the same time water is admitted to the bottom coils 7
through the pipe 9° valve 5b and branch piece 5" in the same manner as previously
described for the steam inlet, the water returning by means of the valve Gª to
the discharge pipe 10. The steam to be condensed enters at the branch 15
through the valve 15" which is now opened and the water of condensation is
drained from the lower vessel through the branch 17b of the two way cock 17.
If required the method just described for working the apparatus as a condenser
may be reversed, that is to say the steam to be condensed may be admitted to
the inside of the coils the cooling water being on the outside. In this case the
valve 16 would be modified to form the cooling water inlet the outlet being
through the valve 15. Steam to be condensed would now enter at the valve 9b
and circulate through the upper and lower coils in a manner similar to that
described for the cooling water, the water of condensation being discharged
through the pipe 10b.
In addition to the lower coils only being in operation when the apparatus is
used as an evaporator, the upper coils also may be used, steam entering the top
coils first and afterwards flowing through the lower coils. It will be seen that
such an arrangement prevents the possibility of priming as any particles of
water which may be carried with the steam generated by the lower coils are
evaporated by coming in contact with the heating surface of the upper coils.
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:-
1. Combined evaporating and condensing apparatus in which the heating and
cooling coils are disposed in two sets, one set being in the upper part of the
vessel and the other set in the lower part of the vessel the arrangement being such
that when used as an evaporator steam is admitted to the upper and lower coils
in series.
2. Combined evaporating and condensing apparatus as illustrated and described
with reference to Figs. I. to IV. inclusive.
Dated this Sooand day of V 1000