A WATER- COOLED VALVE
Year: 1884

page_text: COMPLETE SPECIFICATION.
I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Engineer, do hereby declare the nature of this Invention for "A WATER-
COOLED VALVE" 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 water-cooled valves, adapted for use in the pipes, flues
and connections of gas generators, blast furnaces, and in other pipes through which
a highly heated blast or current of gas or air is passed. Heretofore water-cooled
valves have been proposed and when used have commonly proved defective and
inoperative for the want of suitable means for cooling the valve casing and seat,
and suitable means for circulating the cooling fluid in the valve, etc.
A water-cooled valve and case have been described in which the valve case was
surrounded by a water chamber, and water-pipes connected with the hollow valve,
passed through the valve case and opened into the water chamber, but such device
proved defective in operation for want of efficient means to cause circulation of the
cooling and protecting fluid through the hollow valvo and out into the surrounding
water chamber. In valves heretofore used in the pipes of gas and blast furnaces
much annoyance and trouble have been caused by deposit of soot and ashes in the
valve scat and cases, and no means were provided for cleaning away such deposits,
consequently the seats and cases became clogged and the valve rendered defective
and inoperative to produce a tight joint in the pipe.
The object of this Invention is to overcome and remedy these difficulties and to
so construct the valve apparatus that a perfect circulation of the cooling fluid
through the hollow valve is secured and to provide simple means for collecting and
removing the dust and ashes or any other foreign matter which may be deposited
in proximity to the valve.
In carrying out this Invention, the hollow valve is provided with a transverse
pendant diaphragm or partition, extending from its top to near its bottom-the-
inlet water pipe connecting on one side of such diaphragm passes through the
surrounding water chamber of the casing where it connects with the flexible water
supply pipe or hose and the outlet water pipe connecting with the water space of
-Price R

page_text: the valve on the opposite side of the diaphragm, passes through the valve casing
and then turning down extends to near the bottom of said water chamber where it
opens for the escape of water. The gas pipe section containing the valve is also
provided just below the valve seat with a dust trap in the form of a pocket or deep
recess, having a close fitting removable lid at its lower end below the water
chamber.
In the Drawing Figure 1. represents a vertical transverse section of a valve and
its connections and means for maintaining a practically constant temperature.
constructed according to this Invention.
Figure 2. ropresents an elevation partly in section, showing the valve and its
casing without the surrounding reservoir.
Figure 3 represents a section on line X-X.
The pipe section S, has secured to and extending, above it, the valve casing A,
properly chambered for receiving the valve B, which is arranged to slide in it and
down through the diameter of the pipe to its seat A'. The valve B, is chambered
or made hollow and is provided witli a pendant transverse partition b, extending
from the top of the water space to near the bottom thereof. On one side of the
partition the inlet pipe E, connects for the cooling fluid this pipe slides througli a
bearing or stufling box h, in case A, and extends above, either into chamber C, or
through and above the top thereof-in either position it is connected by a union
or other coupling e, to a flexible pipe or hose E', leading from any suitable water
supply or source of any desired cooling fluid and permitting the reciprocating
movement of pipe E, when the valve is moved up or down. The outlet pipe E,
connects with the water space of the valve on the opposite side of the partition
and passing through stuffing box / connected by elbows and short pipo f with the
downwardly extending pipe F which opens near, the bottom of water chamber C.
The pipes E. F. serve not only for the supply and discharge of water but act at
the same time as means of insuring accuracy in the movements of the valve.
The rod a controlling the movement of the valve may be connected exteriorly
with any suitable mechanism to give the valve an upward and downward movement
when desired. In the Drawing a pivoted lever K, is shown resting upon, or
pivoted to, a standard . for operating the valve, to open or close the air or gas
conduit to any desired degree. The pipe E, may receive a supply of cooling fluid
from a reservoir situated on a higher horizontal plane than the valve, and the
pipe.
*The lower portion of pipe section S, just below the valve seat, A¹, is provided
with a downward extension or chamber D, forming a dust trap whereby soot or
ashes falling on or about sloping valve seat are collected for removal at any
convenient time. The valve and seat are thus at all times kept free from foreign
matter and a tight joint formed, when the valve is closed; this is a very important
matter about a gas generator or metallurgic furnace in order to prevent air leaking
back into a gas conduit and gas from leaking back into an air conduit, and thereby
causing explosions and other injurious results.
A close fitting removable lid d, is secured to the lower end of the dust chamber
for convenient removal when it is desired to clean the chamber or inspect the valve,
its bearings and scat. The dust chamber may be cast with the pipo section:
The water chamber C, may be cylindrical or circular; it surrounds the valve
casing and pipe section for a short distance on each side of the valve and serves to
keep the parts about the valve suitably cooled and well preserved.
The tank or chamber C, is riveted to the flange about the lower end of the dust
trap and tightly secured to the pipe section on each side, if desired, to the
flanges of each section, and it is provided at or near its top with an overflow
pipe m.
The valve and casing may be reversed or placed in various positions with regard
to the conduits with a suitable modification of the construction without departing
from the spirit of this Invention. The water-cooled valve and connecting pipes

page_text: may be used without the surrounding water tank as the Invention is not limited
to the tank in such connection.
The operation of this improved valve apparatus will readily be understood from
the previous description without further amplification.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed as communicated to
me by my foreign correspondent I declare that what I claim is,
1. In combination with a conduit a water-cooled valve having a partition
provided with an opening or passage, and the inlet and outlet pipes for the cooling
fluid connected as described for securing a better circulation of the cooling fluid.
2. The hollow valve having a pendant partition b, provided with a passage at or
near its bottom, in combination with the inlet and outlet water pipes connecting
on each side of such partition, and passing through stuffing boxes in the casing
whereby they may be moved up and down with the valve.
3. The hollow valve having a partition provided with an opening in combination
with the inlet pipe passing through a stuffing box in the valve casing and
connecting with a flexible supply pipe, and the outlet pipe passing through a
stuffing box in the casing and discharging on the outside of such casing whereby a
complete and uniform circulation of water through the valve is secured.
4. The hollow sliding valve in combination with its casing, an inlet water pipe
passing through a stufting box in the casing and connecting with a flexible supply
pipe, and an outlet water pipe, passing through a stuffing box in the casing, and
discharging outside thereof as and for the purpose described.
5. A hollow sliding valve and its casing in combination with the inlet pipe
connected with a flexible supply pipe, an outlet pipe discharging outside of the
casing, all constructed and arranged as described.
6. In combination with a pipe and valve, a dust chamber opening in proximity
to the valve for receiving deposits of soot and ashes and thereby preventing clogging
of the valve and its seat as described.
•
7. The combination in a water cooled valve and casing, of a valve containing a
chamber, a water delivery pipe connected therewith through which the water is
directly forced from without in the operation of the valve, a delivery-pipe connecting
with said chamber and delivery into the water-chamber surrounding the valve-
casing, and an escape pipe connected with said water chamber; whereby a continued
forced circulation is maintained through the valve and the cooling chamber
surrounding the casing substantially as described.
8. The combination in a water cooled valve of a circulating chamber within said
valve and inflow and outflow pipes connected with said chamber, and passing
through stuffing boxes in the valve casing thereby cooling the valve and said inflow
and outflow pipes by the forced circulation of water therethrough, substantially as
described.
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