US1303801A - Owen marshall jones - Google Patents

Description

0. M. JONES.

VALVE.

APPLICATION HLED SEPT. 9. 1918.

Patented May 13, 1919.

llVl/ENTOR OWEN MARSHALL JONES, OF NEW YORK, Y.

VALVE.

To all whom it may concern:

Be it known that I, OWEN MARSHALL JONES, a Citizen of the United States, and a resident of the borough of Manhattan, c1ty, county, and State of New York, (whose post-oflice address is 601 West 149th street, New York city, New York,) have invented an Improvement in Valves, of which the following is a specification.

This invention relates to improvements-1n valves and particularly to the type of valves known as automatic emergency stop valves which are placed in the steam outlet from steam generators or boilers where two or more boilers are connected to a common steam header. This type of valve automat cally closes when the boiler to which it 15 connected develops a leak by the bursting of a tube or otherwise, which steam pressure in the boiler, prevents the flow of steam from header into the disabled boiler.

and thereby the steam This typ of valve also is used to prevent the fiow of steam from the boilers into the steam header when the steam header or any part thereof becomes ruptured. This invention is an improvement on my invention covered by Patent No. 1,205,898 granted me November 21,

' 1916. I have embodied in this present in-' vention additional mechanism and devices and have eliminated some of the features embodied in the invention referred to, so that the valve can be used for and will perform the functions above stated. This invention may be used in any connection in which it is found applicable.

The objects of the invention are to improve upon and simplify the construction of such valves and to increase thelr ability and eificiency to automatically shut off the flowof steam or other fluids.

Other objects of the invention are to eliminate chattering of the valve and shock of the valve when seating.

Further objects of the invention are to produce a valve which will be sensitive to a very small variation in the drop of pressure in the boiler or the steam header.

Further objects of the invention are to insurea thorough cushioning so that the valve will quickly and softly seat when closing.

Other objects of the invention will be apparent from the following description.

An illustrative embodiment of. the invention has been selected herein for the pur- Specification of Letters Patent.

reduces the Patented May 13, 1919.

Application filed September 9, 1918. Seria1No.253,263;

pose of description, same being shown in the accompanying drawings, wherein- Figure 1 is a longitudinal section of the valve, I

Fig. 2 is a top plan view of part 10 of Fig. 1,

Fig. 3 is a cross-sectional view through line 50-50 of part l of Fig. 1, and

Flg. 4 is a cross-sectional view through line 60-60 of part 2 of Fig. 1.

which may be of any suitable metal. I am not to be understood as limiting myself to this particular form of body, as other forms may be used in accordance with my invention. B is the inlet end which is suitably connected to the outlet of a boiler. C is the valve chamber in which the valve I travels longitudinally. D is the discharge chamber with the outlet 9 through which the steam is discharged to the header after passing around valve I and through the opening at the seat 8. E is a piston chamber in which piston H travels longitudinally. F is a piston chamber in which piston G travels longitudinally. The piston Gr is employed to move the valve I from its seat and to hold itfrom its seat, and the piston H is employed to move the valve toits seat and to hold it against its seat. The two pistons are of the proper diameters to perform thefunctions for which they are designed, the piston G is of a diameter greater than the diameter of the piston H. K is a-spindle or rod for rigidly connecting together the pistons G and H and the valve I in their respective positions and on a common axis so the spindle and the pistons and the valve will travel simultaneously upwardly and downwardly, and the spindle has a hollow enlargement at the top part which extends from the top of the piston H to the top of the piston G. The spindle may be a separate member with the pistons and the valve suitably and rigidly mounted on it or may be integral with the pistons. L is a top cover or bonnet secured to body A by suitable means, and has a cylinder, 4 a

portion of which protrudes into the charm ber The cylinder has the two guide grooves 3 and 3 located in it and ,also has on'the top of it the stufiing box 19 and the cap 18 for holding the packing in the studing box. 1 is a valve rod or stem composed of two sections, the sections are suitably engaged and'held together by the'pin 70 or by other suitable means, and the stem is held against longitudinal travel by the projection 14 which is engaged between the top of the yoke 17 andthe plate 15, and the stem may be-revolved by the handwheel 13 -attached'to or is a part of the sleeve 2 and has at its lower end the enlargement 6. The

stem 1, the sleeve 2 and the stem 5 combined clockwise or anti-clockwise.

form means by which the valve can be closed or opened at will by revolving the stem The chamber 9 in the enlarged portionof the spindle K is provided so that the stem 5 with the end projection 6 can travel upwardly and down wardly in the, chamber and so that thepistons G and H can automatically travel upwardly and downwardly when the stem 5 is located at its central point of travel which is the position shown in the drawing. The plug 7 is screwed into the chamber 9 so that the end projection 6 of the stem 5 can bear against it when the valve is to be closed at will. N is a by-pass for furnishing pressure from the valve chamber C to the piston chamber F for performing a portion of the automatic operation of the valve. 0 is an air port for admitting air between the pistons G.and H for a cushion. 31 is an exhaust outlet from the piston chamber F. 20 is the valve body of an automatic exhaust valve which is connected to the main valve at outlet 31 by the pipe 32 or other suitable means, the area of the opening in the outlet and the opening through the valve seat 29 are each at least equal to the area of the bore of the by-pass N. 21 is a bonnet or cover having a rigid diaphragm 51 with at least one port 28 through it, and has a stufling box 26 on top of it through which the stem 25 passes. The diaphragm 51 acts as a ported cover for the piston chamber 23 and also as a guide for the lower end of the spindle 25 which passes through it, and the ports 28 admit the steam pressure from the chamber in the cover 21 to the top of the piston 23 and are made of small bore to create a cushion so that the piston can move upwardly and downwardly without shock. 30 is a by-pass. connecting the steam from the steam header or the .steam header "connection 40 to the chamber in the cover 21. .22 is a valve which is held against the seat 29 by the piston 23 when full steam pressure from the steam header is supplied against the top of the piston,

the diameter of the piston being greater than the diameter of the "valve. The spindle 25 is for closing the valve 22 at will, the spindle brought into engagement with the pisto 23 by the handwheel 27 mounted on its on er end, or the spindle may be operated' by any suitable means. 24 is a spindle or rod connecting the valve 22 with the piston 23. 43 is a spindle operated by the handwheel 44 and passes through the stuffing box 45. This spindle is for unseating the valve 22 at will when desired. 10 is a traveling indicator with the indicating point 16 and .is employed in connection with an indicator plate on the side of the yoke (plate notvbeing shown on the drawing) to indicate when the valve is open or closed when when the end of the stem 5 is at its central point of travel to permit the valve to vautomatically operate. The indicator is held from rotation by the grooves 11 and 11 which engage the guides 12 and 12 on the inner sides of the yoke 17.

-'The operation of the valve is as follows when the traveling sleeve 2 and the stem 5 are at theircentral point of travel and when the automatic exhaust valve is closed as shown in the drawing. The steam pressure enters the valve bodyat B and pas'sesinto the-chamber O and through the by-pass N into the chamber F and forces the piston G downwardly which moves the valve from its 'seat and holds it away from its seat. The

.the stem 1 is operated and also 'to .indicate pressure on top of the piston G the pressure in the steam header created by steam from the other boiler or boilers attached to it will exert pressure against the under side of the piston H and force the piston H upwardly which closes the valte and holds it closed as long as steam pressure in the header is in excess of the pressure in the ruptured boiler, as the-piston H is designed of an area suitable to move the valve upwardly when there is a drop of pressure in the boiler. The steam pressure from the header enters the chamber in the top cover of the automatic exhaust valve through the byass 30 and passes through the ports 28 an 28 and exerts pressure on the piston 23 which holds the valve 22 against its seat. This cuts 01? the flow of steam from the piston chamber F from passi through the, opening in the valve seat 29. Should the steam main become ruptured and the pressure in it is thereby reduced, then the pressur in the piston chamber F entering the automatic exhaust valve body through the pipe 32 forces the valve 22 and piston 23 upwardly thus opening the valve to allow the steam entering the chamber F to exhaust freely to atmosphere through the outlet end of the automatic exhaust valve body, thereby the pressure in the chamber F is killed and the pressure from the boiler on the under side of the valve I forces the valve to its seat and holds the valve against its seat which shuts oil the steam from the boiler to the steam header. If it is desired that the automatic exhaust valv is not to automatically operate then the stem 25 is screwed down against the piston 23 thus bringing the valve 22 against its seat and holding it closed. It will be necessary to thus close the automatic exhaust valve when starting up steam in the boiler and leave it closed until the full steam pressure is obtained in the steam header. When there are two or more boilers connected to a common steam header, an automatic exhaust valve for each emergency valve can be dispensed with. The emergency valves can be connected in a battery to a common exhaust line of proper bore by branches run from the outlets31 of the chambers F and an automatic exhaust valve placed between the outlet end of the exhaust line and the steam header, thereby all the emergency valves would close through the operation of the one automatic exhaust valve, the exhaust valve would have an opening through its seat equal to the combined area of the several exhaust outlets from the emergency valves. By manual or other suitable means the lower stem i 43 in the automatic exhaust valve can be moved upwardly until it engages and opens the valve 22, by this means both the main valve and the exhaust valve can be tested to see if they are in automatic operating condition. For operating the emergency valve by means other than the automatic operation so as to hold the valve closed or open the stem 1, the travelin sleeve 2 and the stem 5 combinedare emp oyed. By revolving the stem 1 cloclrwise the threads at the end engaged in the sleeve 2 raise the sleeve and the stem 5 upwardly and the enlarged end 6 of the stem 5 is engaged against the plug 7 and pulls the pistons G and H and the valve I upwardly, thus seating the valve and holding it closed. To open the valve and hold it open the stem 1 is revolved anti-clockwise which forces the sleeve downwardly against the plu 7 and forces the two pistons and the valve ownwardly, thus opening the valve and holding it. open. When the traveling sleeve and the stem 5- are in the position shown in thedrawing, as before stated, the valve will then operate automatically as the enlarged end of the stem 5 at that position will not engage the bottom of the plug nor on the stem which passes through it. The

position of the indicator as shown in the drawing is at its central point of its alternating travel. When the stem is revolvedclockwise the indicator travels upwardly until the valve is closed; when the stem is revolved anti-clockwise the indicator will move downwardly until the valve is open.

The valve without the automatic exhaust valve can be used where only the steam from the header is to be prevented flowing into the boiler.

It is to be understood where I have shown a piston or pistons and where the words piston or pistons are used that I do not limit myself to the use of a piston or pistons as it might be desirable to use a flexible dia-' phragm or other structure performing functions similar to the functions performed by a piston, as in accordance with common understanding aflexible diaphragm is the the parts forming the combination, as other combinations and equivalents of the parts may be used to variously modify my present invention within the scope of the subjoined claims.

Therefore, without limiting myself to the construction shown and described, nor enumerating equivalents, I claim as my inven tion 1. In a valve, the combination of a casing or body having an inlet and an outlet, a valve chamber, a valve in the valve chamber opening toward the inlet, a valve seat extending into the valve chamber with the surface of the face of the valve seat located transversely to the common axis of the casing, a discharge chamber on theopposite side of the valve seat from the valve chamber, two piston chambers located above and in directlirre with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat positions, a by-pass connecting the two end side of the valve seat from the valve chamber, two piston chamberslocated above and in direct, line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located in the order mentioned and in a direct line on a common axis, a-spindle on which the said valve and the said two pis tons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers in the casing, and a stem .in combination with suitable means for opening or closing the valve at will as may be desired and for holding the valve open or closed, as and for the purpose set forth.

3. In a valve, the combination of a casing or body having an inlet and an outlet, a

valve chamber, a valve in the valve chamber:

opening toward the inlet, a valve seat extending into the valve chamber with-the surface of the face of the valve seat located transversely to the common axis of the easing, a discharge chamber on the opposite side of the valve seat from the valve chamher, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located in the order mentioned and in a direct line on a common axis, a spindle on which the said'valve and the said two pistons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers in the casing, a longitudinally traveling sleeve with a stem attached to the bottom ofit, a stem for raising or lowering the said sleeve and the stem attached to it for opening and closing the valve at will as desired and for holding the valve open-or closed, and suitable means for operating the stem, as and for the purpose set'forth.

4. In a valve, the combination of a'casing or body having an inlet and an outlet, a

valve chamber, a valve, in the valve chamber. opening toward the inlet, a. valve seat extending into the valve chamber with the surface of theface of the valve seat locatedtransversely to the common axis of the cats ing, a discharge chamber on the opposite side of the valve seatfromthe valve chama ber, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than 76 the diameter of the valve operatable within their respectivechambers, the said chambers and the said, valve and the said valve seat are located in the order mentioned and in a direct line on a common axis, a spindle on which the said valve and the said two pistons are rigidly mounted in their respective positions, a by-pass connecting the two end.

chambers in the casing, means for opening or closing the valve at will as may be dc sired and for holding the valve open or closed, and an automatic exhaust valveconnected to the steam exhaust outlet of one of the said piston chambers, as and for the purpose set forth.

5. In a valve, the combination of a casing or body having an inlet and an outlet, a valve chamber, a valve in the valve chamber opening toward the inlet, a valve seat extending-into the valve chamber with the surface of the face of the valve seat located transversely to the common axis of the easing, a discharge chamber on. the opposite side of the valve seat from the valve cham ber, two piston chamberslocated above and in direct line with thedischarge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located in the order mentioned and in a direct line on acommon axis, a spindle on a which the said valve and the saidtwo pistons are rigidly mounted in their respective positions, a by-pass connecting the two end 10' chambers in the casing, a stem in jcombina-. tionwith suitable means for opening or clos ing the valve at will as may be desired and for holding the valve open or closed, and an automatic exhaust valve connected to the 11. steamexhaust outlet of one of the said piss ton chambers, as and for the purpose set forth. a

'6. In a valve, the combination of a casing 6r body" having an inlet and an outlet, all valve chamber, a valve in the valve chamber opening toward the inlet, awvalve seat extending into the valve chamber with'the sur-: face of the face of the valve seat located. transversely to the. common axis-of the cats 12. a discharge chamber on the opposite;v si e of the valve seat from the valve chamber, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than 126 the diameter'of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located the order mentioned and in a direct lme on a eommonaxis, a spindle on 13,

which the said valve and the said two pistons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers in the casing, a longitudinally traveling sleeve with a stem attached to the bottom of it, a stem for raising or lowering the said sleeve and the stem attached to it for opening and closing the valve at will as desired and for holding the valve open or closed, suitable means for operating the stem, and an automatic exhaust valve connected to the steam exhaust outlet of one of the said piston chambers, as and for the purpose set forth.

7. In a valve, the combination of a casing or body having an inlet and an outlet, a valve chamber, a valve in the valve chamber opening toward the inlet, a valve seat extending into the valve chamber with the surface of the face of the valve seat located transversely to the common axis of the casing, a discharge chamber on the opposite side of the valve seat from the valve chamber, two piston chamberslocated above and in direct line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located .in the order mentioned and in a direct line on a common axis, a spindle on which the said valve and the said two pis tons are rigidly mounted in their respective positions, a by-pass connectin the two end chambers in the casing, means or opening or closing the valve at will as may be desired and for holding the valve open or closed, an automatic exhaust valve connected to the steam exhaust outlet of one of the said piston chambers, and a by-pass connecting the said automatic exhaust valve with asteam header supplied with steam through the first said valve, as and for the purpose set forth.

8. In a valve, the combination of a casing or body having an inlet and an outlet, a valve chamber, a valve in the valve chamber opening toward the inlet, a valve seat extending into the valve chamber with the surface of the face of the valve seat located transversely to the common axis of the casing, a discharge chamber on the opposite side of the valve seat from the valve chamber, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located in the order mentioned and in a direct line on a common axis, a spindle on which the said valve and the said two pistons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers in the casing, a stem in combinat1on with suitable means for opening or said automatic exhaust valve with a steam I header supplied with steam through the first said valve, as and for the purpose setforth. v

9. In a valve, the combination of a casing or body having an inlet and an outlet, a valve chamber, a valve in the valve chamber opening toward the inlet, a valve seat extending into the valve chamber with the surface of the face of the valve seat located transversely'to the common axis of the casing, a discharge chamber on the opposite side of the valve seat from the valve chamber, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located in the order mentioned and in a direct line on a common axis, a spindle on which the said valve and the said twop-istons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers inthe casing, a longitudinally traveling sleeve with a stem attached purpose set forth.

10. In a valve, the combination of a casing or body having an inlet and an outlet, a valve chamber, a valve in the valve chamber opening toward the inlet, a valve seat extending into the valve chamber with the surface of the face of the valve seat located transversely to the common axis of the casing, a discharge chamber on the opp'osite side of the valve seatfrom the valve chamber, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valve seat are located in the order mentioned and in a direct line on a common axis, a spindle on which the said valve and the said two pistons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers in the casing, means for opening or closing the valve at will as may be desired and for holding the valveopen or closed, an automatic exhaust valve connected to the steam exhaust outlet of one of the said piston chambers, means for. closing the exhaust valve at will and holding it closed as desired, and means for opening the exhaust valve at will and holding it open as desired, as and for the purpose set forth.

11. .In a valve, the combination of a casing or body having an inlet and an outlet,

a valve chamber, a valvein the valve cham-- indirect line withthe discharge chamber,

two pistons eachof a diameter greater than 'the diameter of the valve operatable within theirrespective chambers, the said chambers a d'the said valve and the said valve seat are located in the order mentioned and in a direct line on a common axis, a spindle on which the said valve and the said two pistons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers in the casing, a stem in combination with suitable means for opening or closing the valve at will as may be desired and for holding the valve open or closed, an automatic exhaust valve connected to the steam exhaust outlet of one of the said piston chambers, means for closin the exhaust valve at will and holding it c osed as desired, and means for opening the exhaust valve at will and holding it open as desired, as and for the purpose set forth.

12;][n a valve, the combination of a casing or body having an inlet and an outlet,

\ a valve chamber, a valve in the valve chamher opening toward the inlet, a valve seat extending into 'thevalve chamber with the surface of the face of the valve seat located transversely to. the common axis of the easing, adischarge chamber on the opposite side of the valve seat from the valve chamber, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers the said chambers and the said'jval've and the said valve seat'ar'e located. in the ordermentioned and in a direct line on a common axis, a spin- I dle on which the said valve and the said two pistons are rigidly mounted .in their respective positions, a by-pass connecting the two end chambers in the casing, a 101igitudinallv travelingjsleeve with a stem atto the bottom-19f it, a stem for raising or lowering the said sleeve and the stem attachedto 'it for'openmg and closing the valve at will as'dcsired and for holding the valve open or closed, suitable means for operating the stem, an automatic exhaust valve connected to the steam exhaust outlet of one of the said piston chambers, means for closing the exhaust valve at will and holding it closed as desired, and means for opening the exhaust valve at will and holding it open as desired, as and for the purpose set forth.

13. In a valve, the combination of a easing or body having an inlet and an outlet, a valve chamber,- a valve in the valve chamher opening toward the inlet, a valve seat extending into the valve chamber with the surface of the face of the valve seat located transversely to the common axis ofthe easing, a discharge chamber on the opposite sidev of the valve seat from the valve chamber, two piston chambers located above and in direct line with the discharge chamber, two pistons each of a diameter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and the said valveseat are located in the order memtioned and in a direct line on a common axis, a spindle on which the said valve' and the said two pistons are rigidly mounted in their respective positions, a by-pass connecting the two end chambers in the casing, means for opening or closing the valve at will as may be de-. sired and for holding the valve open or closed, an automatic exhaust valve connected to the steam exhaust outlet of one of the said piston chambers, means for closing the exhaust valve at will and holding it closed as desired, means for opening the exhaust valve at will and holding it open as desired, and a by-pass for connecting the said automatic exhaust valve with a steam header supplied with steam through the first said valve, as and for the purpose set forth. i

14. In a valve, the combination of a casin or body having an inlet and an outlet, a va ve chamber, a valve in the valve chamber opening toward the inlet, a valve seat extendin into the valve chamber with the surface 0 the. face of the valve seat located transversely to the common axis of the casin a discharge chamber on the opposite s1 e of the valve seat from the valve chamber, two piston chambers located above and in direct line with the discharge. chamber,

two istons each of a diameter greater than the iameter of the valve operatable within their respecgive chambers, the said chambers and the said valve and the said valve seat are located in the order mentioned and in a chambers in theicasing, a stem in combination with suitable means for o mug or closthe valve at will as may desired and vfor 'holding 'the valve open or closed, an

automatic exhaust valve connected to the steam exhaust outlet of one of the said piston chambers, means for closing the exhaust valve at will andholding it-closed as desired, means for opening the exhaust valve at will and: holding open as desired, and a by-pass body having-an inlet and an outlet, a valve chambeiya valve in the'valve chamber: opening toward the inlet, a-valveseat extending into'the valve chamber with the surface of the face of thevalvefseat located transversely to the comon axis offthe casing, a discharge chamber on the opposite side of the valve seat from; the valve chamber, two piston chambers "located alxive and in direct line with the discharge chamber, two pistons each of a;diarneter greater than the diameter of the valve operatable within their respective chambers, the said chambers and the said valve and-thesaid valve seat are located in the order mentioned and in a direct line on a common axis, a spindle on which the said valve and the said two pistons are rigidly mounted in their respective positions, a bypass connecting the two end chambers in the casing, a longitudinally traveling sleeve with a stem attached to the bottom of it, a stem for raising or lowering the said sleeve and the stem attached to it for opening and closing the valve at will as desired and for holding the valve open or closed, suitable means for operating the stem, an automatic exhaust valve connected to the steam exhaustoutlet of one of the said piston chambers, means for closing the exhaust valve at will and holding it closed as desired, means for opening the exhaust valve at will and holding it open as desired, and a by-pass for connecting the said automatic exhaust valve with a steam header supplied-with steam through the first said valve, as and for the purpose set forth. 1

In testimony whereof, I have signed my name to this specification this 7th day of September, 1918.

OWEN MARSHALL JONES.

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