Improvements in Water-tube Boilers.
Year: 1899

page_text: Date of Application, 22nd Apr., 1899-Accepted, 15th July, 1899
Improvements in Water-tube Boilers.
I, HERMANN BLESSINGER, of 13 Koniggratzerstrasse, Magdeburg, in the German
Empire, Certificated Architect, 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 water tube boilers, and has for its
objects, the promotion of a more effectual circulation of the whole of the water in
such boilers, and the conveyance of the greater portion of the steam as fast as
generated into the steam drum apart from the water from which it has been
formed, thereby obtaining a greater efficiency of the boilers than has hitherto
been the case with those at present made and used.
It is well known with all water tube boilers now in practical use, that the
steam in passing from the tubes to the water chamber, and from thence rising
to the steam drum, does not have a sufficiently free passage, by reason of the
narrow limits that the connecting tube between the water chamber and the steam
drum is necessarily confined, relatively to the size of the said water chamber,
the consequence being, the generated steam and the circulation of the water is
impeded, to obviate which is the purpose of my invention.
In order to enable my invention to be more clearly understood, I hereunto
append one sheet of drawings in which:-
-
Fig. 1 is a vertical section (partly broken away) of a water tube boiler, with
my said improvements shewn attached thereto, while
Fig. 2 is a front sectional elevation of the same.
The essential feature of my invention is that above the two lowermost ranges
of tubes A (which being exposed directly above the furnace, generate by far
the greater amount of steam) a suitably disposed baffle plate B, reaching approxi-
mately to the centre of the water chamber C, is rivetted or otherwise fixed to
the said water chamber in such a manner, that the mixture of water and steam
upon discharge from the said tubes A impinges upon the baffle plate B, which,
while allowing the water to flow freely by through apertures D formed therein,,
intercepts the steam and conveys the same along its upper surface to the steam
dome E, through the pipes or tubes F F arranged laterally or otherwise, the
water after passing the plate B being free to rise along the front surface of the
water chamber C in the usual way.
As the steam in the remaining tubes A¹ cannot however be affected by the
baffle plate B, by reason of their position above it, two downwardly depending
baffle plates G G are suitably rivetted or otherwise fixed to the top of the water
chamber C. and form a prolongation of the connecting tube H, so that the steam
discharged from the said tubes A¹ at each side of the baffle plates G G¹ is thereby
intercepted and conveyed separately through the tubes J J¹ fixed to the top of
the water chamber C, and opening into the before mentioned tubes F F to
the steam drum E as in the case of the steam from the tubes A, from which it
will be seen that it is only the steam generated by that portion of the tubes A¹,

page_text: which are situated immediately below the baffle plates G G₁ and connecting
tube H, that enters the steam dome E through the said tube H with the circulat-
ing water, but as this is only a small fraction of the total volume of steain
generated, being but from one-sixth to one-eighth of same, it suffers no impeding
effect, but on the contrary accelerates the whole circulation of the water through-
out the boiler.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is:
1. In water tube boilers, the promotion of the water circulation in combina-
tion with the method and means of intercepting the generated steam and convey-
ing the same to the steam drum, substantially as described and shewn by the
appended drawings.
2. In water tube boilers, the combination with the two lowermost ranges of
tubes A, of a suitably disposed baffle plate B, arranged in the water chamber C,
and extending along the entire width of same, the said plate B having aper-
tures formed therein, and connected to the steam drum E by means
tubes F F for conveying the intercepted steam discharged from the said tubes A
thereto, substantially as described and shewn.
of
3. The improvements in water tube boilers as set forth in the preceding claims.
the combination therewith of the downwardly depending baffle plates G G¹
suitably fixed in the water chamber C, with the upper ranges of the tubes A¹.
with tubes J J¹ for conveying the intercepted steam to the steam drum E, and
the promotion of the water circulation in the boilers by the separate conveyance
of the larger portion of the generated steam to the steam drum E substantially
as herein described and shewn.
1000
GEO. THOS. HYDE,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.