US1513146A - Pump - Google Patents

Description

oep. 1924. 1513145 E" c WILSON PUMP Filed Jlkgly 5, 1922 Pawnee oci. as, i924.

narran Aras ELIHU C. WILSON, 0F LOS ANGELES, CALIFORNIA PUMP.

Application led July 3,

To all whom z't may concern: f

Be it known that I, EnH-1U C. VVILsoN a citizen of the United States, residing in Los Angeles, county ol:l Los Angeles, State of California, have invented new and useful Improvements in Pumps, of which the iollowing is a specification.

This invention has to do with pumps and particularly well pumps, and it is an object of the invention to provide improvements in devices of this character which will render them particularly effective, convenient to handle and repair, and commercially practical.

This application is a continuation in partl of my application for Iletters Patent for an improvement in pump, filed =Sept. 27, 1916, Ser. No. 122,515, renewed Jan. 23, 1921, as application Ser. No. 479,944.

Well pumps, generally, Aare subject to severe operating conditions, that is, they are handled roughly, are used to handle fluid that is dirty or which carries materials detrimental to the pump parts, etc., and therefore require frequent inspection and repair. The foreign materials such 'as sand, and the like carriedoby the fluid being pumped is particularly detrimental to the working parts' of the pump, for instance, the valves, and the plungerand its cooperating part or parts, as the case may be. To inspect or repair a part it is necessary to remove it from the well, which operation ordinarily requires removal of the pump casing and the sucker rods and is therefore troublesome and costly. The amount of time and labor involved in removing and replacing the pump or the necessary parts, depends upon the type and design of pump- Heretofore effort has been made to simplify these operations but in most cases have been at the sacrifice of features of operation and have been operatively impractical for one reason or another.

This invention provides a pump which, when placed in the well, will operate effectively, which can be arranged in and removed from the well in a particularly simple manner, and which is simple in construction and operatively practical. In accordance with the invention all of the working parts of the pump can be placed in and removedy from the well by handling only the sucker rods, or an equivalent part. and the several parts can be seated in manners particularly suited to withstand the conditions under 1922. lserial-ins. 572,547.

which they operate. In other words, the construction and arrangementprovided by the present invention is such that the foot valve and working barrel, which are the parts that are removably seated in position', v

are seated so that the barrel, which is the one most subject to being dislodged 'from its seat during operation, is seated more Vsecurely or positively than the foot valve.

l The various objects and featuresl (if the invention will 'be best and more fullyunderstood from the following detailed description of atypical embodiment of the inventionithroughout which reference is had to the accompanying drawings in which- Fig. l is avertical detailed sectional view of a typical type of pump embodying the present invention; Fig. 2 is a fragmentary elevation of certain of the removable Vparts of the pump; Fig. 3 is a somewhat enlarged transverse detailed sectional view taken aS indicated by line 3-3 on Fig. 1; Fig. 4:'is a view similar to Fig. 3 taken as indicated by The particular pump which I' here set i forth for the purpose of facilitating a clear A understanding of the presentl invention, comprises, generally, a stationary, or at least relatively stationary, discharge pipeor` tubing 10, a stationary suction pipe 11 attached tothe lower end of the discharge' pipe 10, a working barrel 12 removably mounted or seated in the stationarypart, a

plunger 13 arranged to reciprocate inthe barrel 12, an operating or,sucker rod 14 attached to the plunger and extending therefrom upwardly to the top of the well, a foot valve 15 removably mounted or'seated in a stationary part, a working valve 32 carriedby the moving parts, being arranged between plunger13 and sucker rod 14:, and a link or connecting rod 16 which connects the plunger and 'foot valve in such a manner as to allow the plunger its pumping movement and to pull the standing valve out when the plunger is pulled above its working stroke.

The discharge pipe 10, which serves to conduct the pumped fluid fromathe pump to the lower end of the discharge pipe 10. In the particular form of construction shown v in the drawings the suction pipe 11 is conr nected'with the discharge pipe 10 through a collar 19. The collar 19 is attached to the y lower end of the discharge pipe by a suitt plunger and the working barrel.

able coupling 2O while the upper end of the suction pipe 1,1 is connected vwith the end of the collar 19. by ya suitable coupling 21. The

. collar 19 is formed with a central seat opening 22 which tapers or vconverges downwardly'. The conical face of opening 22 is preferably nished and will hereinafter be termed the working valve seat. Parts 19, 20 and 21 may well be made integral if desired.

The working barrel 12 is a comparatively long cylindrical member through which the plunger 13 extends. The 'particular pump disclosed in the drawings being a packed pump (although'that is not at all necessary) the working barrel 12 is made to lit the plunger loosely and packing 24 is arranged in the annular space between the The particular packing 24 illustrated inthe draw.

' ings is carried by the plunger 13 between a collar 14` set on the plunger by a pin 14C, and a collar 14b screw threaded' on the plunger and set in position by a set screw A 14d. The packing is divided into two parts,

y one adjacent each collar, and a compression Spring 14 1s carried around the plunger be tween two parts of the packing, as clearly illustrated in Fig. 2 of the drawings. In operation the collar 14? is screw threaded on the plunger until the spring 14e is compressed the desired amount whereupon it is set by the set screw 14d. I f so desired, Vthe collar 14b may' be set in position by a locking collar 14, as I have illustrated in the drawings. Thespring 14e bears against the two "parts of the packing so that they maintain ia tight joint between the plunger and work in barrel.

seating part 25 is attached to the lower end of the working barrel 12 so-that it is, operatively, a continuation ofthe working barrel. The seating part 25 is formed with a central bore or opening 26 which freely passes the plunger 13.` The outer part of the seating part 25 tapers correspondingly to the angle of the conical seat 22 and is preferably formed with a recess30 for carrying'Babbit metal, leather washers, or other packing material 31 to form a tight joint between the working barrel and collar.

suction pipe 11.

The .plunger 13 is a comparatively long tubular member extending downwardly through the working barrel and into the nected through workin va ve 32 to the sucker rod 14, which in he particular form of pumpunder consideration, -is a solid rod.

, The working valve 32 illustrated in the The plun er 13 is confk Lerares drawings is of typical construction and operation andl comprises, generally, a cage 33 which screw threads into the upper end of the plunger 13, and a ball 34 which is adapted to work in thepcage 33 and to cooperate with a seat 35 in the cage 33 to control the opening 36 formed through the cage 33. It i is to be "particularly noted that the ycage 33 of the valve 32 is formed with a flange 37 the suction pipe 11. In the particular form4 of construction shown in the drawings the carrier 38 is formed with a. central opening 39 which tapers downwardly forming the foot valve seat. The foot valve 15 maybe of typical construction and operation and may comprise a body part 41a having an opening 41b through it and a seat 41C. at the upper end of the opening, a cage 41 attached to the upper end of thebody 41a and a ball 41e carried in the `cage 41 to cooperatewith the seat 41C. The body 41EL of the valve 15 has va seating part 45 which tapers downwardly at an angle correspond ing tothe angle of the seat 39 which part is preferably recessed to carry Babbit metal, leather washers, or other packing materi'al 46 to form a' tight joint with theseat 39.

The rod 16, commonly known in the art as a Garbutt rod, is attached to cage 41 o1 foot valve 15 and extends upwardly therefrom through opening 48 in a bushing 49 attached to the lower end of the plunger 13. The rodv15 extends loosely through the opening 48 in the stop 49 and is provided at its upper end, within the plunger 13, with.

a head 50 which will not pass through the opening 48. The bushing 49 is of such size `collar 19, the suction'pipe 11, and the car-- riers 38, which are the relatively stationary parts ofthe pump mechanism, are fixed in the well at the desired depth. It may be here stated that. the' parts just described, may be considered as forming or comprising a carrier The dischargepipe 10, the i y or frame'structure for the removable or working parts hereinafter mentioned. The reinovable parts, namely the working barrel 12, the plunger 13, the working valve 32, the spring 52 the rod 16, .and the foot valve 15, are lowered into the discharge pipe 10 by lowering the sucker rods in the well known inan- Upon the removable parts nearing operative position the seating parts 45 and 25 engage the seats 40 and 23 respectively. To set the parts in operative position the sucker rod 13 is lowered further until the flange 37 engages the collar 132l to drive the working barrel tight into the seat 23.' In

the meantime, bushing 49 ,has Compressed spring 52 and has resiliently pressed the standing valve into its seat by the time 4the working barrel has been pressed positively into its seat by collar 37 striking its upper end. The spring 52 is particularly desirable in thisy particularlocation, that is between the plunger and foot valve 15 rather than between the plunger and the working barrel because it not onlycauses proper seating of the parts and compensates for inaccuracies in construction and arrangements of parts,but also causes lthe working barrel to be seated somewhat more tightly and positively than the foot valve 15. AIn practice, it has desirable that the working barrel be seated more tightly than the foot valve 15 as there is more tendency for the working barrel to work loose and become dislodged fromuits seat than there is for the foot valve to work loose an ecome dislodged from its seat.

After the movable parts are seated in a` manner such as I havejust described, the plunger can be raised somewhat and then reciprocated for pumpin action. In this pumping action iange does `not necessarily strike the upper end of the working barrel; and neither is spring 52 necessarily struck at the lower end of the plunger stroke. When it becomes desirable to remove the working parts of the pump for inspection or repair, the sucker rod 14 is drawn upwardly so that the bushing 49 engages the lower .end of the barrel seat part 25 and lifts the barrel while the head 50 of rod 16 is engaged by the bushing 49 so that the foot valve 15 is lifted out of the carrier 38. The working or removable parts may then be easily vwithdrawn from the well by simply pulling the sucker rods. In practice it may be desirable to so proportion or construct the. various parts of the pump to cause one of the removable parts' to be dislodged from its seat before the other; so that it is only necessary to pull the sucker -rod 14 upwardly with suicient force to dislodge one Lofthe parts at a time. This may be easily eected; by making rod 6 longer or shorter, as :de-

sired.

y As the present invention is confined more been found that it is particularly particularly to the arrangement of part-s for effecting the particular seating action hereinabove described it is to be understood that I do not limit myself to other details hereinabove recited but wish to reserve to myself any changes or variations that may appear to those skilled in thel art and fall within the scope of the following claims.

The application before ,inen'tioned, of

which this is a continuation, was co-pending 7,5

with another application for pump,'Ser.pNo. 78,625, filed Feb. 16, 1916, and which eventirated in Letters Patent No. 1,299,083, dated April 1, 1919. In said application and patent the broader claims are generic to both 50 the specific form there shown; while the claims of this present application are directed to the form here shown. In said patent there is described and claimed a structure generally similar to that here shown, S5

and with the same operative" fui'icti'onsof` seating the two parts (barrel andfstanding as applied to the working valve. Y

Having described a preferred form of my invention, I'claiin:

1. In a pump ofthe character described, a

stationarystructure providing two; seats, a barrel adapted to be removablycarried on one of said seats, a valve adapted to be removably carried on the other seat, a plunger carried and adapted to reciprocate in the'100 barrel, and means` for simultaneously positively forcing the barrel to its seat and yieldinglyvgforcing the valve to its seat. i f

2. In alpumpof the character described, a

stationary structure providing two seats, a

barrel adapted to be removably carried b v one seat, a foot valve adapted to be carrie by thel other seat, a plunger carried and adapted to reciprocate in the barrel,'means loosely. connecting the plunger and foot valve, yielding meansbetween the plunger and foot valve through which the foot valve is forced to its seat, and means in connection with the plunger for forcing the barrel to its seat.

3. In a pump of the character described, a

stationary structure providing'two seats, a

barrel adapted to be removably carried by one of' the Seats, a foot valve adapted to be removably other seat, a removable plunger operating, inthe barrel; a part in connection with the plunger for engaging the barrel to force it positivel to its seat, a part in connection with the p' unger to engage the barrel to-re 125 move it from its seat, and a spring between the plunger 'and foot valve adapted to be actuated by the plungerl tov yieldingly force the valve to its seat.

carried by the stationany structure having superposed seats,I a removable barrel havinga seating party" seat, yielding means arranged to force the foot valve to its seat upon lowering of the plunger below a predetermined position, and means in connection with the plunger for engaging the barrel so that it. is removed when the plunger is removed.

5. In a pump, a working barrel, a plunger adapted to reciprocatelin the barrel, there being a seat' in the pump for. the barrel, and means upon the plunger for forcing said barrel into position'upon its seat upon thelowering of Said plunger; in combination with a foot valve loosely connected with the plunger and ivelding means between the plunger and the oot valve, there vbeing a seat for the foot valve to which the foot valve is applied through the agency of. said yielding means.

6. In a pump, a casing provided withya seat, a barrel tted within the casing,`ia

plunger slidable through the barrel, a foot valve loosely connected to the plunger and adapted to engage the seat, yielding means actuated by the plunger on its lowering to Yseatinjhe pump for the force the foot valve in' position upon its seat.

7 In a pump, a working barrel, a seat in the pump therefor, a plunger, packing means between the barrel andthe plunger and removable with the barrel 'rnd the plunger, a

liarrel/ay foot valvevloosely connected lwith the plunger, a seat r for thefoot valve, andtwo separate means whereby the plunger acts to force said barrel and said foot valveV to the 4respective seats; the. said means acting on the foot valve being a yielding means.

8. In a ump, a working barrel, a seat in the pump t erefor, a plunger, packing means* f between the barrel and the plunger and rehave hereunto subscribed my name this 26th day of J une, 1922.

' ELIHU C. WILSON.

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