A Method and Apparatus for Controlling the Flow of Fluid in Pipes.
Year: 1893

page_text: Date of Application, 23rd Aug., 1893
Complete Specification Left, 28th Apr., 1894-Accepted, 9th June, 1894
PROVISIONAL SPECIFICATION.
A Method and Apparatus for Controlling the Flow of Fluid
in Pipes.
I, EDWARD REYNOLDS, of The River Don Works, Sheffield, in the County
of York, Engineer, do hereby declare the nature of this invention to be as
follows:-
:―
My invention relates to means of controlling the flow of fluid in pipes,
particularly applicable in cases where the fluid is on its way to produce motive
power, my chief object being to prevent excessive velocity when there is no load
or a reduced load. For this purpose, I place in the pipe a piston valve free to
slide longitudinally so as to obstruct, more or less, lateral holes by which the fluid
enters the pipe. To this valve I attach a rod which extends some distance along
the pipe and carries a disc which may be in an enlarged part of the pipe, there
being sufficient annular passage for fluid left around the disc. The valve rod and
disc are adjustably loaded by weight or spring so as to keep the valve open when
the velocity of fluid in the pipe is normal. When this velocity increases, there is a
reduction of pressure on the one side of the disc whereby the valve is moved so as
more or less to throttle the inlet for the fluid, and thereby to reduce the velocity in
the pipe. There may be several successive discs on the rod, and the rod itself may
in some cases be connected to a throttle or other regulating valve external to the
pipe. As the operation is one of merely throttling, none of the parts require close
fitting, and consequently there is little friction or wear.
Dated this 92nd day of Anon 1802
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
A Method and Apparatus for Controlling the Flow of Fluid
in Pipes.
I, EDWARD REYNOLDS of The River Don Works, Sheffield in the County
of York, 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 thereof:-
My invention relates to means of controlling the flow of liquid or gaseous fluid
in pipes, particularly applicable in cases where the fluid is on its way to produce or
transmit motive power, my chief object being to prevent excessive velocity when
there is no load or a reduced load. For this purpose, as shewn in the accompanying
drawings by Figs. 1 and 2 which are vertical sections on planes at right angles to
each other, I place in the pipe A a piston valve B free to slide longitudinally so as
to obstruct, more or less, lateral holes C by which the fluid enters the pipe. To
the valve B I attach a rod which extends some distance along the pipe and carries
a disc D which may be in an enlarged part of the pipe, there being sufficient
annular passage for fluid left around the disc. The valve rod and disc are
adjustably loaded either by their own weight or it might be by a spring so as to
keep the valve open when the velocity of fluid in the pipe is normal. In cases
where the pipe is not vertical, or where additional weight or springs would be
inconvenient, the rod may be extended through a stuffing box so as to produce an
UQ.11

page_text: unbalanced pressure tending to open the valve. When the velocity increases
beyond the normal, there is a reduction of pressure beyond the disc D and the
difference of pressure moves the valve so as to more or less to throttle the inlet for
the fluid, and thereby to reduce the velocity in the pipe. There may be several
successive discs on the rod, as shewn in the drawing, and the rod itself may in some
cases be connected to a throttle or other regulating valve external to the pipe. As
the operation is one of merely throttling, none of the parts require close fitting,
and consequently there is little friction or wear.
As shewn in Fig. 2, the disc or one of the discs practically closes the passage
when the valve is quite down so that, in order that any fluid may pass, the valve
must have begun to move. The part of the pipe in which the disc moves may be
somewhat tapered as shewn, to compensate to some extent for the reduction of the
fluid current as the valve closes. 1 prefer to fix to the valve rod another disc or
other discs E in a chamber below the valve, to assist in guiding the valve and to
operate as a dash pot to moderate the movement.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described method of controlling the flow of liquid or gaseous fluid
in a pipe by interposing a disc or discs connected to a supply valve, in such a
manner that the action of an increased flow on the disc or discs serves to close
more or less the valve.
2. Apparatus for controlling fluid flow in the manner above referred to, constructed
and operating substantially as described with reference to the accompanying
drawing.
Dated this 28th day of Anvil 1801
ABEL & IMRAY,
Agents for the Applicant.