Apparatus for Purifying and Heating Feed Water for Steam Generators.
Year: 1896

page_text: Date of Application, 10th Sept., 1896-Accepted, 23rd Jan., 1897
COMPLETE SPECIFICATION.
Apparatus for Purifying and Heating Feed Water for Steam
Generators.
I, JAN VON GRUBINSKI, 3, Bracka, Warsaw, Russia, 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 :-
This invention relates to an apparatus for purifying and heating feed water for
steam generators whereby explosions due to the formation of incrustation are
prevented and a considerable saving of fuel effected in the heating of the feed
water.
The above objects are attained by first conducting the feed water from a reservoir
located at a height above the apparatus to a vessel in which those components of
the water which cause incrustation are precipitated by chemical means, the water
then being caused to rise through a suitable filtering vessel, for example, one
furnished with strainers and charged with gravel or the like of various degrees of
fineness, whereupon it flows downwards between a central pipe and the central
orifices of a series of hollow disc-like chambers provided with partitions, after
which it rises in a zigzag path traversing the series of disc-like heating chambers
after which it passes through a pipe to the steam generator. The filtering vessel
aforesaid together with the hollow disc-like chambers is disposed within the flue of.
the furnace to which it is applied so that the waste gases of combustion impart the
necessary heat to the before-referred-to hollow disc-like chambers which présent a
very large heating surface. The series of hollow disc-like chambers may be readily
cleansed internally with water, and externally by suitable tools and the temperature
in the flue in which the heater is located may be suitably regulated.
In the accompanying drawing
Figure 1 is a part sectional elevation of the complete apparatus applied to a furnace
flue.
Figure 2 is a cross sectional view of the furnace flue with the filtering vessel and
the hollow disc-like heating parts in elevation.
Figure 3 is a top view of Figure 1.
Figure 4 is a detail view on an enlarged scale shewing the method of arranging
and connecting together the hollow disc-like chambers and partitions or diaphragms
therein.
The water passes from a reservoir located at a height above the apparatus to. a
vessel b which is supplied with a chemically acting medium for precipitating those
components of the water which are the cause of incrustation in the generator.
Within this vessel is arranged a float 6 in connection with a valve by means of
which the water in the vessel b and filtering vessel d is kept at a certain level.
c is a pipe through which the water passes from the vessel to the underside of the
filtering vessel d provided with two perforated plates or strainers d' d² the first of
which is covered over with coarse and the latter with fine gravel or other suitable
filtering material, through both of which plates and also through the filtering material
thereon the water from the pipe c passes and in the purified state leaves the vessel d
through two pipe bends e leading into a chamber located upon an annular casting f¹
between which and a casting 2, which is let into the brickwork of the flue, the
hollow disc-like parts h are held, each of said parts being provided with a partition h¹.

page_text: 9.
is a central pipe fixed to the casting f1 and extending downwards and connected to
the lowermost of the, partitions .
The diameter of the pipe g is less than that of the central orifices of the hollow
parts h so that between these and the said pipe there is an annular space. Further,
the diameter of the partitions h¹ is less than the internal diameter of the hollow
parts so that between hand h there is also an annular space for the passage of
the water.
The water which has reached the chamber flows in the direction of the arrows
into the pipe g downwards to the bottom and then through the orifices h² formed in
rings (Figure 4) fitted one at each side of the partitions h' and passes upwards in
a zigzag path under and over the partitions through the chambers h to the
pipe through which it passes to the generator in a purified and highly heated
state.
In order to be able to regulate the temperature in the upper flue m¹ in which
the hollow disc-like heating parts are located and thereby also the temperature of the
water flowing through the same, a damper or slide n (Figure 1) is provided which
according to the position in which it is placed closes more or less the flue m' or
leaves it fully open as shewn in the drawing.
When the hollow heating parts are to be cleansed internally with a water scour,
the valve a' (Figure 1) in the pipe a and the valve l' (Figure 2) in the pipe are
closed. The water now passes from the vessel b into the pipe o through the opened
valve o (Figure 3) into the pipe l, thence into the space between the central pipe-g
and central orifice of the hollow parts h being guided through these latter in a
zigzag path by the partitions h¹ from above downwards (Figure 1) in a direction
opposite to that previously described and finally passes into the pipe p connected to
the casting through the opened valve of the same and discharged through an
outlet q. For the purpose of cleaning the hollow parts h externally a door r (Figure 2)
of fireproof material is arranged to open into the flue m'.
In order that the apparatus may, when desired, be readily lifted out of the flue m¹
the chamber with the casting f¹ the hollow parts h and the casting fare connected by
a central rod k provided at top with a screw thread and nut for the purpose, and the
passage of water from the vessel b is shut off by means of a valve c' operated by a
screw from a handle or hand wheel.
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. An apparatus for purifying and heating the feed water of steam generators,
comprising a vessel for containing a purifying chemical, said vessel being connected
by means of a pipe with a filtering vessel which, in turn, is connected with a series
of hollow heating chambers arranged concentrically over one another beneath the
filtering vessel, each having a horizontal partition and central orifices about and through
which the water is caused to circulate upwardly into a pipe by which it is conveyed to
the generator, substantially as described and shewn.
2. In an apparatus for the purposes herein before referred to the combination of the
pipes a, o and and valves a¹ o 1, for the purpose of conducting water from the
vessel 6 down through the hollow heated chambers h to effect the internal cleaning of
the said hollow parts, substantially as described and shewn.
Dated this 10th day of September 1896.
T. B. BROWNE, LIMITED,
Agents.
Benj. T. King,
Registered Patent Agent.