US1422759A - Pump - Google Patents

Description

H. M..GREEN.

PUMP.

APPLiCATION FILED AUG.3I,1921.

Z AV o 4 T am y Wm 5 a w m um rm p H. M. GREEN.

PUMP.

APPLICATION FILED AUG.3!,1921.

Patented July 11, 1922.,

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M Wee/7,

HENRY GREEN, @F L03 ANGELES, CALIFGIS JNKL.

Specification of Letters Patent.

Patented July Ill, 1%22.

Application filed August 31, 7.9531. tlerlal Tie. .192340.

T 0 all whom it may concern:

Be it known that I HENRY M. GREEN, a citizen of the United states, residing at L05 Angeles, in the county of Los Angeles and State or" California, have invented new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to a pump mechanism particularly adapted to be employed for pumping oil wells, and has for its object the provision of a construction including plunger reciprocating within a working barrel and so arranged that packing is forced, by the weight of liquid above the plunger, outwardly from the latter against the Wall of the barrel so as to provide a tight connection at all times. The construction is so arranged that a relatively large supply of this packing may be stored within the plunger and constantly fed downwardly and outwardly against the Wall of the pump barrel as it is worn away, so that the pump may be operated for a long time without renewing the packing.

.Lll; is a further object of the invention to so arrange the pump that, at all sliding contacts between parts thereof, cup construction is provided upon the inner member of saidsliding contacting member so that any send or dirt fallin through the pump structure will be collected in said cup arrangement and directed into the flowing oil or other iluidfor withdrawal from the well,

instead of making its way downwardly between the sliding contacting parts and there by causing friction and wear.

it is a still further object of the invention to provide a pump structure wherein a plunger is slidingly mounted within a barrel with its lower end received over a standing valve positioned in the barrel, and so arranged that when the plunger structure is withdrawn from the pump barrel the standing valve structure will also be withdrawn. A construction is thus provided whereby the pump barrel received within a wall may be cleared by a single pulling operation upon the end of the plunger structure.

The invention will be readily understood from the following description of the accoinpanying drawings, in which- Figure l is a longitudinal section through an outer casing received within a well and having the improved pump mechanism mounted therein and shown partly in side elevation and partly in longitudinal section.

Figs. 2, 3 and 4; sections on the lines 2 Fig. 1.

Fig. 5 is a transverse section on the line 5--5 of Fig.

Fig. (3 is a transverse section. on the line e s of Fig.

The Working barrel ofthe pump is shown at l, and contains the pumping mechanism consisting essentially ol a plunger Working casing l, an having inner and outer spaced'sleeves, of which the inner sleeve is connected at its lower end to a plunger nut, and having the outer sleeve continued above the. inner sleeve and terminating in a usual. rod fitting to which is attached the operating rod tor reciprocating the plunger. A. standing valve is mounted in the working barrel below the Inger so as to extend upwardly within the and this standing valve is so arranged that when the plunger is withdrawn from the barrel, it will be engaged by b e so to be withdrawn with the same.

A supply of pael: is stored between the inner and outer sleev s of the plunger adjacent its lower end, and the outer sleeve of the plunger spaced from the plunger not so that this packing is forced outwardly to form a tight joint between. the plunger and the Working barrel. sleeve rests upon this packing and extends upwardly between the inner and outer sleeves oi toe plunger with a cross bar resting upon the upper end: of this sleeve and extending th rough longitudinal slots the inner sleeve of the plunger, so that the bar and the sis-eve upon which it rests may be forced downwardly with relation to the plunger so as to force the packing outwardly against the wall of the pump barrel.

A tubing is mounted upon the cross bar within the plunger and extends upwardly with a sliding contact provided between the upper end of this tube and the plunger and a valve arranged to close the upper end of the tube. The sliding contact between the tube and plunger includes a suitable stufiing box for preventing return of the oil raised by the plunger past valve between the tube and the plunger wall.

the various points where sliding contacts are provided between parts of the pump structure as thus described, downwardly converging cup members are provided upon the upper ends of the inner menibers of the parts formin the sliding contacts, so that any sand or dirt falling through the structure will be directed by said cup arrangements from said sliding contacts to the central bore of the pump mechanism and into the line of the flowing liquid.

Referring specifically to the construction as thus set forth, the plunger is shown as comprising a rod fitting 2 received within pump barrel 1 and secured to a tube connection 3 having liquid outlet ports 4 whereby the liquid pumped through the plunger structure is discharged to the pump barrel and from thence into the pump tubing connected to said barrehfor raising said iquid. Tube 3 is connected at its lower end to an upper plunger nut 5, and a cup 6 is received around tube 3 above said plunger nut and is so arranged as to collect therein any falling sand or dirt and direct the same away from the sliding contact between said cup and plunger and the pump barrel.

The upper plunger nut is connected to the outer sleeve 7 of the plunger which extends downwardlywithin pump barrel 1 and is arranged for sliding contact therewith. This outer sleeve of the plunger is an upper section of said sleeve and is connected at its lower end by a coupling 8 to the lower section 9 of the outer plunger sleeve. An inner plunger sleeve 10 is also connected to cou pling 8 so as to extend downwardly in spaced relation within sleeve section 9. The inner sleeve 10 is provided with longitudinal slots 11, and a cross bar 12 is mounted in the inner sleeve with its ends received in said slots for reciprocation therein.

A tubing 14 rests upon cross bar 12 and extends upwardly within the upper section of the outer plunger sleeve. This tube terminates a short distance below upper plunger nut 5 in a valve seat 15 arranged at the baseof a cup structure 15 similar to that previously described so as to direct falling sand away from the sliding contact between said valve seat and the plunger sleeve 7 and toward the axial bore through said valve seat. A ball valve 16 forming an upwardly opening check valve is received upon the valve seat for closing the axial opening provided through the pump structure. Upward movement of the ball valve is limited by a cross bar 17 carried by cup 15.

The member 15 also forms the upper part of a stufing box provided between tube 14 and the sleeve 7 of the plunger. For this purpose suitable packing 18 is received against the lower surface of member 15, and a suitable lower part 19 of the stufiing box is secured to tube 14 so as to be received against the lower surface of the packing.

A sleeve 20 is received between the inner and outer sleeves 9 and 10 of the plunger below cross rod 12. At its lower end a ring 21 is fixed to this sleeve for sliding movement 1 ,aeavee within the space between the sleeves of the plunger and adapted to impinge against packing 22 stored between the sleeves of the plunger. This packing is, preferably, a

sleeve structure and extends downwardly from ring 21 to a point adjacent the lower end of the plunger. The plunger nut 23 is mounted upon the lower end of inner sleeve 10 of the plunger and extends outwardly toward outer casing 1 with the outer sleeve 9 of the plunger terminating short of said plunger nut so as to provide a space 24 leading from the space between the sleeves of the plunger to the pump barrel 1.

Packing 22 extends outwardly through this space and against the wall of pump barrel 1 so as to provide a tight connection between the sliding plunger and the pump barrel. As this packing is worn away the store of packing within the space between the plunger sleeves is forced downwardly so as to maintain at all times a tight connection between the plunger and the pump barrel. lt-will be noted that the packing will be forced downwardly by sleeve 20 which is in turn forced downwardly by cross bar 12 having tube 14: resting upon the same. This tube is forced downwardly by the weight of the liquid above valve 16 resting upon the same.

A standing valve is arranged in the pump barrel 1 below the lower end of the plunger so as to ext-end upwardly within the axial bore of the plunger. For this purpose a tapering seat 25 is provided in pump barrel 1 below the plunger, and a seat 26 of the standing valve, similarly tapered, rests upon the seat 25. A bushing 27 depends from seat 26, and a valve seat 28 is formed within seat 26 for a ball valve 29 forming an upwardly opening check valve. A tube 36 of the standin valve extends upwardly from seat 26 and is secured thereto by the connection 31, said tube being received within the bore of the plunger.

At the upper end of tube 30 a cup member 33, similar to those previously described, is mounted upon the tube so as to provide a construction for directing falling sand away from the sliding contact provided between said cup and the inner sleeve of the plunger. A; ball valve 34 is received upon a valve seat arranged at the base of the cup so as to provide an upwardly opening check valve, and the u ward movement of this ball valve 18 llmlted y a cross bar 35 carried by cup 33.

Cup member 33 forms an annular shoulder 36 extending beyond tube 30, and the lower plunger nut 23 forms an annular shoulder 37 extending inwardly from plunger sleeve 10 and in alinement with shoulder 36, so that when the plunger is raised. a distance greater than its normal limit of reciprocation for providing the pumping action, shoulder 37 Will impinge against shoulder 36, and by inaavea I is then forced past check valve 16 and outwardl through port l into the pump barrel and thence into the pump tubing, so as to be raised therein. by the continued reciprocation of the plunger. As previously stated, the weight of the oil upon check valve 16 will cause sleeve 20 to be forced downwardly upon packing 22 and thereby force the latter outwardly as it is worn, for maintaining a tight joint between the plunger and the pump barrel. It will also be noted that the provision of cups 6, 15 and 33 arranged at the respective points of sliding contact between parts of the pump, will direct falling sand and dirt inwardly to the axial bore of the pump so that the same will be withdrawn from the well by the ascending column of liquid, instead of passing downwardly between the contacting surfaces. By this arrangement friction and undue wear between the par s forming the sliding contacts are eliminated. I

it will be understood that the upper edges of the cups, as thus arranged, may be made as sharp as found expedient, in order to thus direct all of the falling sand away from the sliding contacts formed by the pump structure.

Various changes may be made without departing -from the spirit of the invention as claimed.

What is claimed is:

l. A pump including a working barrel and having a reciprocating plunger, and packing within and adapted to be forced from one end of said plunger against said barrel by the weight of the pumped fluid above said plunger.

2. A ump including a working barrel and having a reciprocating plunger, packing within said plunger and adapted to be forced therefrom against said working barrel, a member slidably received within said plunger and resting upon said packing to force the same outwardly by the. weight of the pumped fluid upon said member, and packing provided between said member and the plunger.

3. A pump including a working barrel and having a reciprocating plunger, packing within said plunger and adapted to be forced therefrom against said working barrel, a member slidably received within said plunger and resting upon said packing to force the same outwardly by the weight of the pumped fluid upon said member, and a check valve within the bore of said member.

4. in a pump for wells, a working barrel, a plunger within the barrel, a packing within the plunger and having a projecting portion, a member associated with the plunger to cause said projecting portion to engage the wall of said barrel, and means responsive to the weight of the pumped fluid above the plunger for constantly forcing the packing from the plunger so that as the projecting portion wears away a new portion will be substituted.

5. A pump including a working barrel, a reciprocating plunger within the barrel, a packing within the plunger adapted to be forced therefrom against the working barrel, and a member slidable within the plunger and resting upon the packing to force the latter outwardly from the plunger by the geight of the pumped fluid upon said mem- 6. A pump including a working barrel, a reciprocating plunger within the barrel, a valve member within the plunger operating to support-the fluid in the barrel and above the plunger during the limiting stroke of the plunger, a packing within the plunger and adapted to be ejected therefrom against the working barrel, and means between the valve member and packing which operates to respond to the weight of the fluid on said member to force the packing from said plunger.

7. A pump including a working barrel, 2. plunger slidable within the working barrel, a valve member slidable within the plunger, and a packing mounted within the plunger to be engaged by said member and forced therefrom against the working barrel by the weight of the pumped fluid acting on said member.

8. in a pump, a working barrel, a plunger within the working barrel having a lower portion comprising sleeves spaced apart to provide a storage space, a packing stored within said space and having a portion thereof projecting from the lower ends of the sleeves to engage said working barrel, and means engaging the upper end of the packing for constantly exerting a downward force on the packing to maintain the projepting end thereof in contact with the bar re 9. In a pump, a working barrel, a plunger within the barrel and comprising an upper sleeve, spaced lower sleeves, a valve member slidable in the upper sleeve, a packing b tween the lower sleeves having a portion thereof in contact with said barrel, and means within the plunger responsive to the movement of said valve member for exerting pressure on said packing to maintain the lattar as it wears in contact with said barrel.

10. In a pump for wells, a plunger having ltlt a packing receiving chamber, a packing sleeve within the chamber with one end projecting therefrom, a valve member movable within the plunger, and means between the member and packing sleeve for feeding the latter from the chamber when the valve member is moved in one direction.

11. In a pump for wells, a working barrel, a plunger within the working barrel having a packing receiving chamber, a packing sleeve within the chamber having one end projecting therefrom, a packing directing member associated with the chamber for causing the projecting portion of the packing sleeve to engage said barrel, a valve member movable within the plunger, and

means between the valve member and packing sleeve for' urging the latter outwardly H. M. GREEN

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