US906733A - Well-blower. - Google Patents

Description

J. E. MOEVOY.

WELL BLOWER.

APPLICATION IILBD JAN. 2a, 1906.

Patented Dec. 15, 1908.

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lll/f III/lll n Jade/2% JOSEPH H. MCEVOY, OF HOUSTON,

TEXAS, AssIeNoE or ONE-HALF To WALTER B. SHAEP,

OF DALLAS, TEXAS.

wann-BLOWER.

Specification of Letters latent.

Patented Dec. 15, 190.

Application led January 23, 1906. Seria1No. 297,617.

To all whom it may concern:-

Be it known that I, JOSEPH H. McEvoY, a citizen of. the United States, residing at Houston, in the county of Harris, State of Texas, have invented certain new and useful Improvements in Well-Blowers, of which the following is a specification, reference being had therein to the accompanying drawings. A

This invention relates to a well blower, and particularly to a novel construction of valve ada ted to be attached to the air ipe of a wel for discharging the contents t ereof at different levels and air pressure.

The invention has for an object to provide an improved construction and arrangement of the valves disposed at successive points in the length of the air tube so that they lwill be automatically opened at lpredetermined pressures of air, the amount of said pressure being) decreased in the descending length of the tu e.

A further object of the invention is to provide an improved construction and arrangement of these automatic valves by which they serve as a coupling for the sections of the air tube and rovide a minimum surface exposed to the iquid in the well, and the maximum exposed surface tothe air pressure. l

Other and further objects and advantages 4of the invention will be hereinafter set forth and the novel features thereof defined by the ap ended claims.

n the drawing z--Figure 1 is a vertical section illustrating the application of the invention to a well; Fig. 2 is an enlarged horizontal section through one of the valves; Fig. 3 is an enlarged detail section* of the parts of this valve se arated from each other, Fig. 4 is a sectiona view of a modiiied form of the invention, and Fig. 5 is a similar view of a further modification.

Like letters of reference indicate like parts throughout the several views of the drawings, The letter A designates a well tubing which may be of any desired construction, and is preferably provided at its upper end with a closing cap A having an aperture therein to receive the air pipe B which is rovided with a coupling B above the cap p ate for application to any desired source of air supply. The well tubing is' also provided with a discharge pipe A2 at its upper portion in the usua manner. The air pipe B is provided throughout its length at predetermined dis! tances a art with automatically opening valves o any desired construction, these valves being constructed and arranged to o en at a predetermined pressure of air, and t e necessary pressure for that urpose decreasing downwardly in the length of the air pi e. As showing a preferable form of this va ve, I have illustrated in the drawing a coupling C interiorly threaded at its opposite ends to receive the sections B of the air pipe and provided with one or more apertures C2 in its side wall communicating with the well tube. Inserted in this aperture is an exteriorly threaded valve seat C8 having an' aperture C* extending therethrough and provided with a cup portion C5 upon its inner end within the air plpe. This cup portion is provided with suitable apertures C to permit passage'of air within t e cup in order that it may ear upon the diaphragm or yielding head C7 clamped between the inner face of the cup and the cap vided with a clamping face D.l to bear on th'e edge C8 of the cup, and with interior threads D2 to engage threads C9 on the periphery of the cup and when applied securel retains the dia hra m in position. A va ve D3 is carried lby t is diaphragm and Iovided at its outer end with a seating face 4 adapted to' close the inner end 4of the aperture C4. This valve is secured to the diaphragm by means of a threaded shank D5 extending therefrom and through an aperture in the diaphragm to which a clamping nut De is aplied on the opposite end of the diaphragm. he valve is normally held in closed by means of a tension spring D7 isposed within the interiorly threaded extension D8 of the cup, and bearing at one end upon the diaphragm, and at its o posite end upon a threaded plug D inserte 1n the extension D8 and secured a ainst rotation by means of a contacting loc ring plug D10. These plugs are used to adjust t e tension of thevspring upon the diaphragm and the consequent ressure required to oplen the valve, and the ocking lug permits t e valve to be set and positive y retained at its adjustment;

In Fig. 4 a modified form of the cap and valve is applied to the valve seat C5 at its cup end, and comprises a c linderE interiorly threaded at its outer en E and its inner end with alpacked piston E2 having an interior recess s into which a tension D. This cap is proosition provided at spring E4 extends, the pressure thereof being adjusted by means of the threaded plug E5 retained in position by the locking p lug E inserted in Contact. therewith. The piston carries at itsinner end the valve E7 having the contact face Es for the inner end of the passage1 C4.

Fig. 5 the valve F may open outwardly and its stem F is then secured to the diaphragm F2 carried by casing F3 and held bg perforated cap F4. The casinglis made wit a: packed nut F5 and spring "'F extended therefrom to the diaphragm. The casing is formed with a discharge passage F7 having a tapered valve seat at its outer end and lateral passa es F8.

required tofopen the` `.atfect the same.

In t e o eration of this invention it will be observed t at the face oi the valve exposed to the pressure outsideof the air tube is much less in area than that vof the diaphragm lex posed to the interior pressure7 there being a difference of a roximately one to sixteen. As the result o t 's construction the 'exterior pressure of the liquid in the well has little or .no effect u on the o eration of the valve due the valve disposed at 500 from the top of the` well discharges at a ressure of 250 ounds, this pressure also 'ts the body'oi) liquid above said valve so that when the pressure is relieved this rst valvecloses. The next valve is shown disposed at 400 below the first valve and 'adapted to dischar e" at a pressure of 200 ounds, which also ts the 400 of liquid an bein less than the ressure t valve and oes not Descendin lfurther,` the next valve is dis osed' at 300 elow the second valveand o y requires a pressure of '150 pounds to discharge from the same 'andlift the 300 level of liquid, while the lowermost valvev is disposedA at 200 below the third valve and only requires a pressure of 100 ppunds for disehar g from the same and ting the liquid. ltlvwill thus be seen that the pressure required to dischar e from the valve also raises the liquid from t e predetermined de th and that a well of the de th of 1400', of uid as shown in Fig. 1, can Ee-operatedwit a maximum pressure of v250 pounds thus greatly facilitating and economizing in the blowm thereof.

The construction o the' valve herein shown is such as to exert the minimum resistance against opening the same, and also to expose the smallest possible area to the pressure of the liquid outside of the air pipe, while the enlarged operating diaphragm or' head per-A mits a full application of the pressure within the air ipe until such pressure is relieved by the liitmg of the liquid above ,the valve.

While these valves are ada ted to discharge.

successively, still the con tions of' the air and liquid pressure within the well may be such as to produce a simultaneous operation by olpening or partially opening two or more o t e va ves when the pro er pressure is maintained within the air pipe.

It will be obvious that the maximum ressure of 250 pounds herein given as an ustration may discharge from all of the valves beneath the uppermost successively until the body of liquid is reduced proportionate toi the air pressure required `for hfting the same. l

With the parts of the relative sizes as shown in Fig. 1, the upper valve is set by its spring' to discharge at a pressure of 250 pounds when disposed at a depth of 500 in the air tubin of the Well, and the diaphragm of this valve has 'an area sixteen .times greater than that of the valve face exposed to the liquid pressure. This 500 column of liquid will produce a back pressure of only 15% pounds upon a i exposed face of the valve which tends to open or assist the air pressure to that extent, and 1t would therefore be apparent that a i maintained pressure of only 234?, ounds on a 1 diaphragm added to the ack i dischar e the valve, but un er such conditions wien the valve starts to o en there would be a slight momenta bac How of liquid through the valve so t at to obtain a positive raismg of the li uid the pressure of 250 pounds is maintaine and afterpassing through the valve exerts the same pressure u on the'vlume of liquid thereby raisingv to of the well, by whic time the next valve be ow is opened and operating due tothe reduced pressure of the li uid caused bythe t e same approximately1 100 feet toward the air space. After this co umnris raised the .escape of air immediately reduces the pressure and the s ring by which'the tension of the valve is a justed closes the same and 1t again requires a pressurev of 250 pounds to ressure would discharge from the top valve as at this time there is no back pressure of the liquid thereon. The successive valves operate in the same manner, it being understood that at no time is the pressure within the air pi e necessarily increased above that require for the valve to'be discharged, and this valve may be used with air, gas,- steam or any iiuidpressure. Y

Having new described my invention and set forth its merits, what I claim and desire to secure by Letters Patent 1s:-

1. In a Well blower, the combination with a pressure pipe, of a series of .valves each having an actuated fluid pressuresurface and an actuating fluid pressure surface of greater area, said valvesl bein located at diierent distances apart througiout ther length of the pipesand constructed' and arranged to discharge actuating fluid therefrom at successively downwardly decreasing pressures within said pi e. Y 2. In a wellpblower, the combination with a pressure pipe comprising sections of downwardly successively decreasinglengths, of an automatically operated valve 1n each of said `face o greater area,

len ths having an actuated .fluid pressure surlace and an actuating fluid pressure sureach valve being constructed and arranged todischarge actuating fluid at a dierent pressure from that of the next successive lvalve beneath the same.

3. ln a well blower, the combination witha pressure pipe provided with a series of dis-` charge openings, Iof automatically controlled pressure opening valves disposed at dierent discharge at successively downwardly decreasing pressures.

4. In a well blower, the combination with a pressure pipe provided with a series of dischargeopenmgs, of automatically controlled valves disposed at said opening and having their seating faces of less area t an their surface exposed to an actuating Huid within the pipe, and tension means arranged to .control the`discharge 'of actuating fluid from said valves at successively downwardly decreasing pressures. l

n testimony whereof, I aiiix my signature in presence of two witnesses. f' Y JOSEPH H. MCEVOY. Witnesses:

, CHAs.v B. Woon, CHAMP Ross.

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