An Improved Method of and Means for the Production of Motive Power by the Combustion of Oil, or Gas, or Solid Fuel
Year: 1897

page_text: PROVISIONAI, SPECIFICATION.
An Improved Method of and Means for the Production of Motive
Power by the Combustion of Oil, or Gas, or Solid Fuel
I, HAROLD MEDWAY MARTIN, of 39, Guilford Street, London, W.C., Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved method of, and means for, producing
notive power, by the combustion of gas, oil, or solid fuel. According to this inven-
tion a turbine, or like apparatus, is driven by a jet or flow of mixed gases, resulting
in part from the combustion of a gas, liquid or solid fuel. This gas liquid, or solid
fuel is burned under pressure in a combustion chamber, the burnt gas escaping,
from a suitable opening at a high velocity, being employed to drive a turbine or
similar apparatus. To maintain the pressure in this chamber & to bring in the
supply of air necessary to maintain combustion I make use of the inductive action
of a jet of high pressure steam. This jet of steam flowing through suitable cones,
nozzles, & the like, in the nature of an injector, draws in the air & forces it into
the combustion chamber, as already mentioned.
An Improved Method of and Means for the Production of Motive
Power by the Combustion of Oil, or Gas, or Solid Fuel.
I, HAROLD MEDWAY MARTIN, of 39, Guilford Street, London, W.C., 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 improved method of & means for the production of
motive power by the combustion of gas, or oil, or solid fuel. According to this inven-
tion a turbine or like apparatus is driven by a jet or flow of mixed gases resulting
in part from the combustion of a gas vapour or liquid or solid fuel. This gas
vapour or solid fuel is burnt under pressure in a combustion chamber, the burnt
gases, escaping from a suitable opening at a high velocity, being employed to drive
a turbine or similar apparatus. To maintain the pressure in this chamber & to
bring in the supply of air necessary to maintain combustion I make use of the
inductive action of a jet of high pressure steam. This jet of steam in flowing
through suitable cones or nozzles in the nature of an injector, draws in the air &
forces it into the combustion chamber as already mentioned.

page_text: "
One method of carrying this invention into practice is shown in Figures 1 & 2.
Of these Fig. 1. represents an end view & Fig. 2 a longitudinal section of the
chamber in which the combustion of the fuel takes place under pressure. This
chamber is marked a" in the drawings & is closed at one end by the cover b and
at the other by the cover c.
The exterior of the chamber & covers is conveniently
made of metal marked d in the figures, but may be of any other suitable material,
whilst inside both covers & chamber there is a lining of refractory material
marked e. The air needed for combustion is drawn into the chamber, as indicated
by the arrows f, by the action of high pressure steam passing through the injector g,
which injector is preferably of a high efficiency type. The air thus drawn in
passes, down the trumpet shaped interior of the cover b, into the chamber, its
velocity head originally very great, being converted into pressure head in accordance
with a well known principle of hydro-dynamics. The fuel either oil, or gas, or
vapour, is introduced by the nozzle h, & burns in the chamber a. The highly heated
products of combustion finally leave the chamber by the orifice shown in the
cover c, passing thence to the turbine to be driven through a suitable conduit
not shown.
The inventor does not bind himself to the particular arrangement or proportions
shown in the figures. In particular it may often be convenient to obtain the high
pressure steam needed by placing a coil of pipe inside the combustion chamber &
passing water through this coil. This water, when the apparatus is working, will
be converted into steam & may then be used for working the injector already
mentioned. Again if oil fuel is used it may conveniently be vaporised by passing
it through a second coil, similarly placed in the chamber, before allowing it to
enter the nozzle h.
When solid fuel is used it may conveniently be powdered & blown into the
chamber by a nozzle similar to h.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I claim is :-
The use of a steam jet to maintain a pressure, the higher the better, in a com-
bustion chamber in which is burnt a suitable fuel, the resulting products of com-
bustion being finally utilised to drive a turbine.
Dated this 15th day of December 1897.