An Improved Regulating Device for High Pressure Water Turbines.
Year: 1897

page_text: Date of Application, 4th Sept., 1897-Accepted, 4th Oct., 1898
COMPLETE SPECIFICATION.
An Improved Regulating Device for High Pressure Water Turbines.
I, DESIRELLO BARTOLOMEO, of Rivarolo, near Genoa, Liguria, in the Kingdom
of Italy, 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 that class of turbine where a jet of high pressure water
impinging on radial vanes produces the required motion, and it has for its object
to so regulate the impinging water that the quantity and speed may be varied
without breaking the solidity of the jet.
This invention consists in the provision of a specially shaped valve and aperture
with methods and devices for opening the same.
The method of carrying this invention into effect is illustrated in the accom-
panying sheet of drawings as follows:-
Figure 1 is a vertical section through the improved valve gear.
Figure 2 is a sectional plan on the line
Figure 1.
Figure 3 is a similar vertical section at right angles to Figure 1, showing a
portion of the turbine.
m n.
Over the inlet opening of the turbine casing a, an intermediate piece b is placed,
this intermediate piece 6 being provided with a tulip-shaped projecting pipe having
at its bottom portion a conical opening or valve seat c. A conical valve d whose
sides enter into the seat c, having its sides parallel with the faces of that seat as
shown in the drawing, is connected to a spindle i carried in suitable guides
Forming the portion of the spindle i is a slotted framework h in which a cam
works, this cam or eccentric 9 being fixed upon the end of the valve spindle f,
which in turn is rotated by the hand wheel k, and so operates the valve spindle
with its conical valve d in either direction. The spindle f suitably packed as
shown at Figure 1 of the drawings.
C
By turning the hand wheel so as to lift up the valve d the opening through
the tulip shaped pipe b is increased, and the quantity of water admitted is therefore
increased, and owing to the formation of the valve d and its opening the water
after passing the cone joins together again, and forms a solid jet as it strikes the
vanes of the turbine. It is evident therefore that not only very accurate regulation
of the quantity of water is provided for by this arrangement, but also the jet itself
is not dispersed or broken, but strikes the turbine vanes as a solid mass.
It is to be clearly understood that the shape of the valve d with its seating
may be other than conical, as, for instance of an oval or rectangular form, so that
after the issuing of the water from the opening a flat impinging jet would form.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. In high pressure water turbines the provision of a long tapering valve with

page_text: a similar seat preferably of conical shape as a means for accurately regulating the
flow of water without breaking up the impinging jet, substantially as hereinbefore
described.
2. The improved regulating device for high pressure water turbines herein-
before described with reference to Figures 1, 2 and 3, of the accompanying draw-
ings.
Dated this 27th day of August 1897.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham,
Agents for the Applicant.