US2157704A - Deep well pump - Google Patents

Description

May 9, 1939. J. P. JAcKsoN DEEP WELL PUM P 5 sheets-sheet 1 Filed OC'lL. 9, 1935 ATTONEY r//Zf J. P. JACKSON 2,157,704

DEEP WELL PUMP Filed Oct. 9, 1935 5 Sheets-Sher??l 2 JAMES RJACKSQN.

VENTOR A TTORNE Y May 9, 1939. J. P. JACK-SON DEEP WELL PUMP Filed Oct. 9, 1935 3 She'tS-Sheet 5 6 1 @una ,1- 1 rfr, :i

Application v@ctolrer 9, 1935,

Serial No. 44,192

12 (ci. iaimi This invention relates todeepwell pumps, and more particularly to improvements in deep'well pumps actuated by uid under pressure from a remote point, wherein such fluid serves as an actuating medium for the pump pistons and also mingles with the out-flowing liquid for the purpose of adding limpetus to its ow.

The present invention is an improvement over the deep Well pump shown in my companion United States Letters Patent Number 2,049,957 of August 14, 1936.

An object of the present invention is to provide a deep well pump of the type referred to,v

a novel valve structure and its operating mechanism for controlling the ow of the high-pressure motivating iuid,.wh ich valve structure is so constructed as to make it impossible for the valve or valves to stop in a neutral position and also haust from the cylinders of the pump into the flow of liquid being discharged fromthe pump, where, mingling with the liquid, it serves to add impetus to the ow of the liquid and facilitate its discharge from the well in which the pump is used.

Another object of the invention is to provide a novel structure for operating the high pressure uid control valves which includes means mechanically acted' upon by the pistons and which means is so constructed that seizure thereof due to foreign matter, such as sand, interfering with the operation is eliminated, and should the normal mode of operation be' suspended for any reason whatsoever, tlie said means will still operate to insure throwing of the pressure uid control valves.

Still further objects of the present invention are; to provide means for preventing the leakage of high-pressure motivating fluid into the cylinders on the pumping sides of the pistons; to provide a novel and positive acting valve mechanism for controlling the exhaust of the highpressure motivating fluid from the pump cylinders, and to provide a simple positive acting mechanism'to prevent the reverse fiow of pump fluid into the cylinders of the pump during the suction strokes thereof.

With these and other objects in View, as may appear from the Iaccompanying specification, the invention consists of various features of construction and combination of parts which will befirst described in connection with the accompanying drawings, showing a valve of the preferred form embodying the invention, and the features forming the invention will be speciically pointed out in the claims.

In the drawings: v Fig-ure 1 is a longitudinal section through the improved deep well pump having parts thereof broken away.

Figure. 2 is an enlarged longitudinal. section through the valve structure for controlling the motivating uid. i

Figure 3 is a cross. section taken on the line 3-3 of Figure 2.

Figure 4 is a cross section taken on the line 4 4 of Figure 2. ,Y

Figure 5 is a detail side elevation of one of the valves which control the motivating fluid.

Figure 6 is a detail view in plan of a part of the high-pressure motivating iiuid control valve.

Figure 7 is a fragmentary longitudinal section through the improved pump taken on the line 1-1 of Figure 8. l

Figure 8 is a horizontal section through the improved pump taken on the line 8--8V of Figure Figure 9 is a cross section taken on the line 9 9 of Figure 7 and having the exhaust control valves removed.

Figure 10 is a detail section taken on the line |9--l0 of Figure 9.

Figure 11 is a detail section taken on the lin II-H of Figure 9.

Figure 12 is alongitudinal section through the pump taken at right angles to the longitudinal section shown in Figure 1.

Figure 13 is an enlarged longitudinal section through one of the discharge control outlets of the fluid pump, and taken onvthe line I3-I3 of Figure 12.

Figure 14 is a top plan of the discharge control outlet.

Figure 15 is a detail section taken on the line I515 of Figure 1 2.

Figure 16 is a cross section taken on the line l6`|6 of Figure 15.

Figure 1'7 is an enlarged section taken on the same plane as the section of Figure 1 and illustrating in detail the piston operated mechanism for operating the motivating fluid control valves.

Figure 18 is a detail section taken on the line ls-la of Figure 1'1.

Flgure 19 is a detail section taken on the line I9-I9 of Figure 17.

Referring more particularly to the drawings, the deep Well pump which embodies the present invention comprises a cylinder block I having cylinders 2 and 3 bored therein. Pistons 5 and 6 reciprocate in the cylinders 2 and 3 and serve the dual functions of power pistons and pumping pistons.- 'I'he pistons 5 and 6 are connected at their lower ends through the medium of piston rods 1 and 8 and a iiexible member 9 such as a chain or the like so that when one of the pistons moves upwardly in liquid pumping stroke under impetus of the motivating pressure fluid the other piston must move downwardly.

^ The pistons 5 and 6 are operated by any suitableA fluid under pressure, such as gas, air or the like. which is compressed by any approved type of compressor (not shown) and delivered to the valve housing I0 through the high-pressure uid supply pipe A novel type of valve mechanism is provided which controls the distribution of the motivating pressure iiuid to the cylinders 2 and 3 and the motivating fluid after passing the valve structure passes through the distributing block I2 and to the passages I3 and I4, leaving these passages, at their lower ends and passing through the connecting passages or ducts I5 (see Figure 9) into the lower ends of the cylinders 2 and 3 where it acts upon the pistons 5 and 6 for operating these pistons.

In deep well pumps of this type where one of the pistons is moving in a pumping suction motion and a motivating fluidexhausing motion 'or direction while the other piston is moving in a liquid discharging movement under action of the motivating fluid, it is very necessary that the leakage of any pressure uid into the cylinder in which the piston is moving in its suction motion is prevented.

The improved valve structure is particularly designed to prevent such leakage and to insure the proper distribution of the motivating uid at al1 times.

The valve housing I0 has a pair of cylindrical reciprocating valves 20 and 2| mounted therein.

\ment of the two valves so that when one valve is moving into its open or unseated position, the other valve is moved into its closed lor seated position. The lower ends of the valves 2li and 2| seat on suitable valve seats 25 and 26 respectively.

The valves are moved into open position by the pistons 5 and 6 through the medium of a novel valve operating structure specifically shown in Figures 17 to 19 inclusive of the drawings. The valve operating structures include plungers 21 which are slidable in suitable bores 28 formed in the cylinder block I. The lower ends of the plungers 21 project into the cylinders 2 and 3 as clearly shown in Figures 1 and 17 so that when the respective piston nears the upper end or terminus of its stroke, it will engage the lower end of the respective plungers 21 and move this plunger upwardly in the bore 28. For instance in Figures 1 and 17 of the drawings, the piston 6 is illustrated at the upper limit of its movement, at which`time the plunger 21 actuated by the piston 6 is also moved upwardly to the limit of its upper movement. During the upper movement of the plunger 21, its upper end engages the lower end of the relatively short valve operating plunger 29 forcing this plunger upwardly against the compression of the spring 30. Dung its upward movement, the valve engaging and operating plunger 29 engages the bottom of the valve 2| and moves it upwardly oii its seat 26 thereby opening the chamber 3| to admission of highpressure motivating fluid through the passage 32 formedpin the valve casing or housing I0. A secondary valve 33 is formdon each of the valve actuating plungers 29 intermediate its ends and these secondary valves 33 engage seats 34 carried. by the cylinder vblock I at its upper end so as to prevent leakage of high-pressure motivating fluid past the plunger 29 and through the bore 28 into the cylinder when the piston therein is moving in a downward or suction stroke.

Springs 36 engage the plungers 21 and the anges 31 on the plungers 29 for urging the plungers 21 downwardly away from the flanges 31 and into the respective cylinders, while the plungers 29 are moved out of valve actuating position by the springs 30. By particular reference to Figures 1 and 1'1 it will be noted that the plungers 21 are relatively long and also that they travel through a greater scope of movement-than do the plungers 29. The latter plungers travel only a short distance, to litt the valves 26 or 2| only sumcient distance oil their seats. Also it will be noted that the plungers 21 and 29 are ot such length that they will at all times operate their respective valve 20 or 2|, by actual physical contact if the springs 36 either break or do not have suilicient tension to exert the quick upward valve operating position or movement to the plungers 29.

The plungers 21 and the anges 31 of the I plungers 23 are fiuted as shown at 38 so as to permit the leakage of any liquid pumped to run from the bores 26 back into the respective cylinders.v

'I'hese iiutes which form-open passageways back into the cylinders are necessary and desirable be-I cause the fluid pumped often contains sand or other foreign material which would have a tendency to cause seizureof the plungers if no provision were made to permit it to flow freely back into the cylinders.

The valve mechanism which controls the delivery of the motivating fluid to the cylinders also embodies means for preventing the, stopping of the valves 20 and 2| is a neutral position and to insure their continued movement into seated or unseated positions once such movement has been started by the plungers 29. To provide for this insurance of proper positioning of the valves the rocking lever 23 has projection 40 formed thereon which terminates in a knife edge 4I. 'I'he knife edge 4I engages a ball 42 which is carried by a yieldably mounted seat 43. The seat 43 is slidably mounted in a suitable carrying housing 44 and it is urged upwardly to maintain the ball in engagement with the projection 40 by a spring 45.

By particular reference to Figure 2 of the drawings it will be noted that the bore 46 of the seat 43 has a greater radius than the radius ofthe ball 42 and also that the ball 42 rests on a flat surface on the seat thereby rendering the ball unstable and preventing stoppage of the rocking lever 23 at any point between the terminals of its scope of movement. 'I'he ball 43 also engages the lever has reached the terminal of its movement and steadies the lever and prevents hunting movement or jiggling of the valves.

The valves 20 and 2 I' and thel carrying member 45 have suitable drain openings 41 cut therein to permit drainage of any of the liquid pumped from out of the valves or the valve casing l0 incase such liquid should leak into the valve casing- When one of the pistons is moving upwardly under action of the motivating fluid and pumping liquid out of the well the other piston is moving in the opposite direction and sucking liquid from the well into the pump and discharging the lused motivating iuid from the lower end of its cylinder upwardly through its passage I3 or Iii, and the respective distributing block I2 past the exhaust control valves 50, through the passages 5I and into the chamber 52 formed in the insert 53.

The exhaust valve structures each have upper valve conesections 55 which act on the valve seats 55 and the lower conical sections 5G which project into the conical recesses 51 'in the distributing blocks I2. The exhaust valves 50 are connected by suitable rods 55 to a rocking arm 59 so as to insure simultaneous movement of the exhaust valves when the valve ZI is in open position, as shown in Figures land 2 of the drawings, the motivating fluid entering the valve housing I5 from the pipe II will pass through the passages 26 (Fig. 2) and downwardly through the passages I2' (Fig. l0) in the distributing block i2, into and through the passages I5 and l5 and against the piston 5 for actuating it. At the.

same time the motivating uid entering the chamber 5l through the passage 5l' will set the exhaust valve 56. As the piston 5 is moved under power o the motivating fluid it will move the piston 5 due to the connection between the pistons. Also as the exhaust valve 55 is closed it will, through the lever connection 59, open the exhaust valve 55' permitting the exhaust ofmotlvating iiuid from the cylinder 2. The exhausting motivating uid will pass through the passages l2 into the Aspace 5l and thence through the passage 5I into the chamber 52. From the chamber 52 the exhausting gas or fluid will pass through the check valve l5 into the pump casing passage B8, where it will mingle with the oil being pumped and activating the oil to facilitate its discharge from the well.

When the pistons are moving downwardly in suction stroke (see Figure 12) the liquid to be pumped is drawn through suitable check valves 6|) into the passages 5i and from these passages into the cylinders. When the pistons move upwardly under action of the motivating fluid the forcel of the discharging liquid which has previously been drawn into the cylinder will actuate the check valves 50 to prevent discharge of the liquid therethrough, and it will unseat the ball valves 62, moving them off their seats 53 and against the seats 55 formed on the lower or inlet ends of the initial discharge pipes 55.

' being pumped or discharged passes into the space The fluid end of the insert 53. 'Ihe distributors 59 have a plurality of radially spaced relatively small openings 'I0 formed therein which discharge the liquid being pumped into the final discharge pipe 68 in relatively small streams, substantially at vright angles to the normal flow of the liquid in Athe final discharge pipe. The distributors 69 also have a plurality oi larger emergency openings lI drilled therein above the normal outlet openings l0. 'I'he passage of the discharging liquid through the emergency openings I0 is normally prevented by a ball valve 12 which is held on its seat "I3 by a spring 1li. The tension of the spring M is regulated by adjustment of the adjustable tensioning plug 'I5 in the upper end of the distributor 69. Should the openings Ill become clogged so as to prevent the normal discharge of the pumped liquid the building up of pressure in the initial discharge pipes 85 below the ball valves 'I2 would, when such built up pressure reached or exceeded a predetermined degree, unseat the ball valves 12 and permit the liquid to be discharged through the larger emergency youtlets 1l.

The spring tensioning plug I5 has a plurality of drain openings I5 therein to permit drainage through or past the plug of any liquid which might settle thereon and it is also provided with a. relatively large central ball 'I'I for the same purwhere it mingles with the discharging liquid and it still being under pressure will add impetus to the ilow of the discharging liquid and consequently enhance the pumping action of the pump. 'Ihe exhausting motivating fluid passes from the chamber 52 through the passages 18 through the valve structures I9 and into the nal discharge pipe below the level of the openings 'I0 through which the liquid enters the final discharge pipe. The valve structures i9 may be of any suitable type of check valve so as to prevent pumped liquid from passing downwardly into the chamber 52 and thence downwardly into the remaining parts of the pump. As clearly shown in Figure 7 of the drawings the exhausting motivating fluid enters the final discharge pipe 68 parallel to the axis of the discharge pipe and in the same direction as the normal ilow liquid through the final discharge pipe. It will therefore be noted that the pumped liquid enters the iinal discharge pipe v68 in small streams flowing transversely to the line of ow of the exhausting motivating fluid. Such action results in a more intimate mixture of the motivating fluid and the liquid being pumped, resulting in a smoother delivery or discharge action of the pump and also permitting the utilization of the maximum effect of the lifting of the exhausting motivating fluid for carrying the liquid upwardly and out of the discharge pipe 58. The improved pump is particularly designed for use in pumping deep petroleum wells and the motivating fluid in most of such instances is the gas which forms in the well so that there is no disadvantage, and, in fact, there are advantages to be derived by the intimate mixing of the liquid being pumped with the exhausting motivating fluid.

While in the foregoing description and in the accompanying drawings the various features forming the present invention such as the valve mechanism for controlling the delivery of the motivating fluid, the plunger structures for operating such valves and the method or manner of discharging the pump liquid into the final discharge pipe have been illustrated and described in connection with a particular type of deep well pump, it is to be understood that the inventive and novel features of these various structures may be employed with any suitable mechanism or` any other type of deep well pump where applicable, without departing from the spirit of the present invention. It will be understood that the invention is not to be limited to the specific construction or arrangement of parts shown, but that they may be widely modied within the invention as defined by the claims.

What is claimed is:

1. In a deep well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, plungers actuated by said pistons for operating said valves, said plungers having flutes cut therein to permit flow of liquid along the plungers.

2. In a deep well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivating iluid to said cyilnders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means -actuated by said pistons for operating said valves, said means including plungers engaged by said pistons, valve engaging plungers adapted to be moved in valve operating movement by contact with said piston engaged plungers, and means normally urging ,said piston engaged plungers out of contact with said valve engaging plungers.

3. In a deep well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for sirnultaneous movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means actuated by said pistons for operating said valves, said means including plungers engaged by said pistons, valve engaging plungers adapted to be moved in valve operating movement Aby contact with said piston engaged plungers, said piston operated plungers having a relativelylong stroke, said valve engaging plungers having a relatively short stroke.

4. In a deep Well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means actuated by said pistons for operating said valves, said means including plungers engaged by said pistons, valve engaging plungers adapted to be moved in Valve operating movement by contact with said piston engaged plungers, said piston operated plungers having a relatively long stroke, said valve engaging plungers having a relatively short stroke, and means normally urging said piston engaged plungers out of contact with said valve engaging plungers.

5. In a deep well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means actuated by said pistons for operating said valves, said means including plungers engaged by said pistons, valve engaging plungers adapted to be moved in valve operating movement by contact with said piston. engaged plungers, said piston operated plungers having a relatively long stroke, said valve engageing plungers having a relatively short stroke.

6. In a deep well pumping motor, a pair of adjacentcylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating iluld to said cylinders, means actuated by said pistons for operating said valves, said means including plungers engaged by said pistons, valve engaging plungers adapted to be moved in valve operating movement by contact with said piston engaged plungers, said piston operated plungers having a relatively long stroke, said valve engaging plungers having a relatively short stroke, said plungers having flutes connected longitudinally therein.

7. In a deep Well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means iorvsupplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means for operating said valves, and means for preventing said valves from stopping in a neutral position, valves controlling the exhaust of motivating fluid from said cylinders, and means whereby the operating of said motivating fluid supply control valves will operate said exhaust control valves.

8. In a deep well pumping motor, a pair of v adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for lsupplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means for operating said valves, means for preventing said valves from stopping in a neutral position, valves controlling the exhaust of motivating fluid from said cylinders, means whereby the operating of said motivating iluid supply control valves will operate said exhaust control valves, and a pivoted lever connecting said exhaust control valves whereby the closing of one exhaust valve will open the other exhaust valve.

9. In a deep well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means for operating said valves, means for preventing said valves from stopping in a neutral position, valves controlling the exhaust of motivating iluid from cylinders, means whereby the operating of said motivating fluid supply control valves will operate said exhaust control valves. said exhaust valves having opposed valve surfaces formed thereon, and valve seats cooperating with said opposed surfaces whereby said exhaust valves Will prevent the leakage of pressure motivating iluid into the cylinders during the exhausting stroke thereof.

l0. In a deep well pumpingmotor, a pair of encarna adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating iiuid to said cylinders, means actuated by said pistons for operating said valves, said means including plunger-s engaged by said pistons, valve engaging plungers adapted to be moved in valve operating movement by contact with said piston engaged plunger, means normally urging said piston engaged plungers out of contact With said valve engaging plungers, 'and means for preventing stopping movement of said valves when in a neutral position.

11. In a deep Well pumping motor, a pair of adjacent cylinders, a piston in each of said cylinders, means connecting said pistons for simultaneous movement, means for supplying motivat-i ing iiuid to said cylinders at one end of said pistons, valves for controlling the supply of motivating iluid to said cylinders, means actuated by said pistons for operating said valves, said means including plungers engaged'by said pistons, valve engaging plungers adapted to be moved in valve operating movement by contact with said piston engaged plunger, means normally urging said" piston engaged plungers out of contact with said valve engaging plungers, and means for preventing stopping movement of said valves when in a neutral position, a valve housing for said valves, said valves provided with drain openings to prey vent accumulation of liquid in the valves and valve housing.

l2. In a deep well pumping motor, a housing, a pair oi adjacent cylinders in said housing, a `piston in each of said' cylinders, means connecting said pistons for simultaneousA movement, means for supplying motivating fluid to said cylinders at one end of said pistons, valves for controlling the supply of motivating fluid to said cylinders, means for connecting said valves for simultaneous movement in opposite directions, means for actuating said valves, said valve actuating means normally out of contact with said valves and moved into valve contacting and actuating movement under action of said pistons,

valves controlling the exhaust of motivating iluid from said cylinders, means whereby the operating of said motivating iiuid supply control valves will cause operation of said exhaust con- Atrol valves, said exhaust control valves having opposed valve surfaces thereon, and valve seats cooperating with said opposed surfaces whereby said exhaust valves will prevent the leakage of pressure motivating uid intolthe cylinders during the exhausting stroke of the pistons;

JAMES P. JACKSON.

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