An Improved Superheater for Water-tube or Tubulous Steam Boilers.
Year: 1896

page_text: COMPLETE SPECIFICATION.
An Improved Superheater for Water-tube or Tubulous Steam
Boilers.
I, HEINRICH GÖURIG, of 122 Pallaswiesen Strasse, Darmstadt in the Empire
of Germany, Manufacturer, do hereby declaro 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 applicable to wator-tubo or tubulous
steam boilers, that is to say to boilers composed of tubes containing water, for its
purpose of superheating and drying the steam generated in the boilor, in order to
obtain a better effect from such steam and at same time to preserve the tubes
composing the superheater from being burnt out too quickly. This apparatus
Consists of worm-like helically-coiled pipes which convoy the steam through the flues
in a direction opposite to that of the hot gases from the furnace. These coils of
pipe are so arranged in the flues that they occupy very little space therein, and
therefore do not prejudice the draught in the chimney.
In the accompanying sheet of drawings, I have shown a superheater constructed
in accordance with my invention as applied to a marine water-tube, or tubulous
boiler, Figure 1 being a transverse, and Figure 2 a longitudinal section.
The superheater consists of two coils of pipe wound into a worm-like or helical
form to which the steam generated in the boiler is conducted by means of a pipe b
extending into the upper boiler or steam and water space a; one of these coils c2
is placed horizontally in the last flue between the upper and lower boilers, whilst
the other el is passed through a vertical uptake in the upper boiler a, into the
chimney K and forms the connection between the pipe b and the other coil e 2.
It will now be understood that the steam generated in the boiler is led in the
pipes c¹ and c 2, forming the superheater C, through the boiler flues in a direction
opposite to that of the hot gases from the furnace, so that it is subjected first to
the action of the cooler gases and then successively to the action of the hotter
gases, and is thereby gradually superbeated under conditions which are necessary,
on the one hand for the production of dry steam, and on the other hand for the
preservation of the superheating pipes. By the arrangement above described the
superheating pipes occupy very little space, which is a feature of considerable
importance, especially in marine boilers.
Having now particularly described and ascertained the nature of the said inven-
tion and in what mauner the same is to be performed I declare that what I
claim is:-
The improved superheater for water-tube or tubulons steam boilers which
consists of worm-like or helically-coiled pipes, so placed and arranged in the
flues that the steam passing through them is caused to move in a direction opposite
to that taken by the hot gases from the furnace, whereby the said steam is subjected
to an increasing temperature as it passes onward through the coils, substantially as
described and for the purposes specified.
Dated this 17th day of November 1896.