Improvements in Steam Generators.
Year: 1895

page_text: CUMI JIMIE DI MUITIVATION.
Improvements in Steam Generators.
I JAMES YATE JOHNSON of 47 Lincoln's Inn Fields, in the County of London,
Gentleman do hereby declare the nature of this invention (which has been
communicated to me from abroad by Julien Belleville of 17 Rue d'Offémont, Paris
in the Republic of France Engineer) 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 improvements in water tube steam generators more
especially of the Belleville type, in which the flow of water to the sections or
elements for every pattern of generator is efficiently controlled by means of feed
unions which may be made removable and capable of being replaced by other
unions with a feed section varying according to the requirements of each particular
case. The said unions may also be readily taken to pieces and inspected.
In the accompanying drawings
Figures 1, 2 and 3 shew respectively in elevations at right angles to each other
and in plan a portion of a set of steam generators of the Belleville type adapted
for marine boilers and provided with the improvements forming the subject of this
invention.
Figures 4 and 5 shew in detail in sectional elevation drawn to a larger scale the
principal parts which effect the cycle of forced circulation and
Figures 6, 7 and 8 shew in cross section longitudinal section and in plan
respectively details of a feed collector constructed according to this invention.
Referring to Figures 1 to 5, A are the vapourizing elements or sections of a
steam generator of the Belleville type and B is the water and steam purifying
cylinder. C is the return outlet or overflow for the water from the purifier giving
the greatest horizontal cross section obtainable. D is the cylindrical chamber for
the feed float d of the generator the said chamber forming part of the outlet C
from the. purifier B, E is the automatic feeding device situated on the upper side
of the boiler. F is a cylinder constituting a water reservoir of especial use with
the marine type of boilers for maintaining the continuity of the cycle of forced
circulation when the apparatus is tilted at sea by rolling and pitching.
G is the return pipe or downcast for the water from the purifier B to the feed
collector I of the elements or sections. H is a junction piece, where calcareous or
other residues are separated by centrifugal force, communicating at its centre part
with the feed collector I and at its base with the depositing chamber K. I is the
feed collector of the vapourizing elements or sections and J is the union formed
between each of the vapourizing elements A and the feed collector I. K is the
chamber already referred to in which the calcareous or other residues are deposited.
The aforesaid are well known features in the Belleville type of steam generators
and form no part of the present invention.
According to this invention I arrange a plate A' (Figs. 6. 7. and 8) in the feed
collector at an inclination or angle best adapted to cause the largest practicable
supply of water in motion in the said collector to be continually carried against the
side thereof most exposed to the furnace heat while the steam generated along the
said heated side be driven back towards the base of the collector.
The circulation of the water through the steam generator generally is caused by
the variations of temperature at the different parts of the generator and through
the feed collector or union in particular by the feed pump which forces the water

page_text: therethrough. The water fed to the union here meets the water in the generator
and draws it into the vapourising elements where it continues to circulate.
The inclined plate may be passed into the collector through an opening or
aperture O formed in one of the ends thereof as shewn in the drawings and may
be retained in its normal position by means of angle iron plates B¹ clamping
pieces C and locking screws D¹.
This arrangement for heating the forced and continuous feed for the vapourizing
sections of steam generators may be applied to steam generators of various classes,
the proportions forms and arrangements for securing the cycle of forced circulation
being modified to suit the needs of each particular case, provided the distinguishing
features of the invention be retained.
Having now particularly described and, ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is.―
1. In steam generators feed injector unions for supplying a heated forced and
constant feed of water for the vapourizing elements or sections thereof substantially
as described.
2. In steam generators providing the feed collectors or unions with inclined
plates substantially as and for the purpose hereinbefore described and illustrated in
the accompanying drawings.
Dated this 19th day of January 1895.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.