US1540513A

US1540513A - Sealed valve

Info

Publication number: US1540513A
Application number: US591193A
Authority: US
Inventors: John J Cavett
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-09-28
Filing date: 1922-09-28
Publication date: 1925-06-02
Anticipated expiration: 1942-06-02

Description

J ne 2, 1925.

J. J- CAVETT SEALED VALVE Filed Sept. 28. 1922 J Ca t-E.

VIII/(1mm Patent rlime 2, I

If? l JOHN J; UAVET'A, E JOHNSTO'WN, EEWNSZLVANM,

enema!) venue.

Application flledtaeptember 2d, 1922. Serial Ito. snares.

rcertain new and useful Improvements in Sealed Valves and I do hereby declare the following to be a full, clear, and exact de-' scription of the invention, such as will onable others'skilled in the art to which it appertains to make and use the same.

My invention relates generally to a valve which is applicable for use in connection with branch pipes or feeders which discharge gases into a main pipe and consists of a particular arrangement and construction for sealing such a valve, while at the same time allowing water or other liquids to pass by it, while maintaining the gas seal when closed. v

fine of the applications of this valve is to, each of the goose necks or rising pipes, one of which is connected with each coke oven or a battery comprising a number of coke ovens and these pipes discharge the gas from each coke oven into a general collecting main which is ordinarily located near or at the top of the battery of ovens. After the oven has been charged with coal or other materials and while the various other openings are closed during the distilling period, my valve is normally open allowing the distillate gases from the oven to be discharged into the gas collecting main.

At intervals of 18 hours, more or less, the oven has to be recharged with coal after the coke has been discharged therefrom and at with an n this time the oven doors are open and the chargin hole is also open, so that'during this period my valve is closed so as to pre vent access of air, etc, into the collecting main.

My valve may be made of conical form turned annular lip around its lower portion so that between this lip and the body of the valve an annular space is provided of approximately triangular section with rounded corners. A stream or spray of ammonia liquor or water, is discharged into the goose neck of the rising pipe and is discharged thence into and past the valve into the collecting main, for the purpose of absorbing the ammonia or other by-products.

Some tar may also be deposited and a little of this may also remain in the annular illustrated.

space of my valve, The liquid tli'us discharged into or condensed from the gases in the rising pipe or goose neck thereof will keep the annular space in my valve sealed as the up turned lip of the valve is of such a depth as to maintain the necessary depth of liquid therein and this height is greater than the gas pressure in order to maintain the closure,

My valve is seated-against a seat ring and this ring may'have notches or openings of any form provided in or near its lower edge so that when closed the liquids discharged into the valve may still flow past the valve and maintain the gas seal, while at the same time permitting the passing of theliquids.

My valve when closed 15 therefore gas tight, but at the same time permits liquids to pass. The notchesor openings in my valve seat may be of any form desired and my valve may be either conical or of any other shape and the cross-sections of the annular space may be triangular, rectangular, or'of any other contour as may be readily understood by any one skilled in this art.

The valve may be of disk shape or it may be conical to aid in its seating, or it may be rectangular or of any other shape, the essential feature being the upturned edge to retain liquid.

Having thus given a general description of my invention, I will now, in order to make the matter more clear, refer to the annexed sheet of drawings, which form part of this specification, and in which like characters refer to like parts:

Figure 1 is a vertical sectional elevation of a rising pipe connection on thevtop of a battery of coke ovens, between one of thecoke ovens and the collecting main; Figure 2 is a bottom plan view of the valve seat; Figure 3 is a vertical section through the valve seat; Figure 4 is a vertical section through the valve; Figure 5 is a top plan view of the valve, and Figure 6 is a detail view drawn on a larger scale illustrating the manner of forming the liquid seal bo tween, the valve seat and the valve.

Referring now to the characters of references on the drawings lis the top portion of a coke oven; 2 is part of the frame work or bracket which supports the collecting main 3; at is a lease ring seated in the to of the coke oven into which the stan pipe 5 is connected Connected to the upper part of the stand pipe 5, is the goose neck pipe 6, and this is provided with the usual su 'inging door or cap 7 to permit access to the opening 8 therein; this cap being provided with a hinge 9 as illustrated. The goose neck is provided with a downwardly inclined portion 10, which is integrally connected with the valve casing 11, the lower portion of which has an annular flange 12 as illustrated. An annularcollar 13 is secured to the upper portion of the collecting main 3 and to the flange 12 by means of its flanges 14, by the bolts 15. Between these two portions is inserted the flange 17 of the valve seat casing 16, and thereby it is secured in place. The valve 19 is illustrated as of conical form and provided with an upturned edge 18 forming an annular space or approximately triangular section between said edge and the body of the valve as illustrated. The valve seat casing 16 has the valve seat 20 on its lower edge and the sealing fluid in the annular space of the valve is 21. The valve 19 is provided with a supporting'rod or stem 22 secured thereto, the upper end of which passes through the cover 23 on the top of the valve casing and this rod has a clevis member 24 at its upper end preferably formed integrally therewith. To the clevis is pivoted a lever 26, which is rotatably mounted on the support25, and provided with a removable counter-weight 27 at its outer end. 1

The valve seat portion 16 is provided with notches 28, in the bottom edge or seat thereof, which will allow liquids to pass by said valve when closed and the height of liquids retained by the upturned edge of the valve 18; is such as to overcome the gas pressure and prevent the passage. of gas when the valve is closed, while allowing the spray or liquids to pass through the notches 28, thereby discharging over the upturned edge of the valve into the collecting main. The water, ammonia liquor, etc, is discharged into the goose neck and thence into the collecting main through the spray pipe 29, while 30'is the liquid in the bottom'of the collecting main. A

When the parts are in position, illustrated by the ,full lines in Figure 1, the valve is closed and consequently the doors and charging openings for the coke oven may be opened for charging, etc, and no air or other/gasesca'n be discharged from the oven into the collecting main or vice versa.

After the oven is charged, the openings and doors thereof are closed and the distillation of gas begins, the weight 27 is re moved from lever 26 and the valve 19 is allowed to drop by gravity to the position shown by dotted lines in Figure 1, whereby gases are discharged into the collecting main and over the valve, and the water or M"- ea ers monia liquor, etc., from the spray pipe 29, is discharged directly into the collecting main.

When the valve is closed the liquid passes through the notches in the valve seat and thence through the annular space in the valve and over the valve edge into the collecting main.

Although I have shown and described my invention in considerable detail. I do not wish to be limited to the exact and specific details thereof. as shown and described, but may use such modifications in, substitutions tor, or equivalents thereof as are embraced within the scope of my invention, or as pointed out in the claims.

Having thus described my invention, what I claim and desire to secure by Letters Patcut is I 1. A valve having an lip-turned edge portion adapted to retain liquid, and a seat member having openings in its lower end against which end said valve is adapted to rest, thereby allowing liquid to pass, while providing a gas seal.

2. A valve having an up-turned edge adapted to retain liquid. a valve seat adapted to co-operate therewith having notches to allow the discharge of liquid therethrough when the valveis seated. while at the same time maintaining a gas seal.

3. A valve having an approximately conical body portion with an up-turned lower edge, thus providing a continuous annular space between the edge and the body, a 'valve seat member adapted to contact at its lower end with said valve between the body portion and said up-turned edge and provided with openings in its lower end, and means for supplying liquid to the valve, whereby the valve is adapted to be sealed against the passage of gas while permitting liquid to pass. y

4. A valve having an approximately conical body portion with an up-turned edge, thus providing a continuous annular space between the same and the body, a notched valve seat adapted to contact with said valve between the body portion and the rip-turned edge thereof. and means forsupplyingliquid to the valve, whereby the valve is adapted to he gas sealed when seated while allowing liquid to pass.

5. A valve having an up-turned edge portion adapted to retain liquid, a valve seat adapted to co-operate therewith, means for supplying liquid to said valve, a lever connected with the valve and provided with a removable weight adapted to temporarily hold the valve in closed position. said valve being adapted to be held open by its own weight when said removable weight is removed.

6. A valve comprising a conical body portion with an lip-turned edge, thus providing notches in its contact ed e,

a continuous an riular space between the edge and body, a valve seat adapted to contact with saidvalve between the bodyrtion and said up-turned edge, sald seat aving means for s1; plying liquid to the va ve, whel eby it Is adapted to beseeled against the'passage of game while permittin 1i uid'to pass, a valve stem secured to sai v ve, a pivoted lever cohnected to said stem and a weight adapted 10 In wltness whereof I hereuhto afiix my J5 signature,

JOHN J. CAVETT,

be said weight or