US996490A - Deep-well pump. - Google Patents

Description

S. LIPPERT. DEEP WELL PUMP.

APPLICATION FILED MAY 6, 1907.

Patented June 27, 1911.

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UNIE TATES FICE.

SAMUEL LIPPERT, OF EAST CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO THE AMERICAN PUMP COMPANY, OF

PORATION OF ARIZONA TERRITORY.

PHOENIX, ARIZONA TERRITORY, A COR- DEEP-WELL PUMP.

To all whom it may concern:

Be it known that I, SAMUEL LIPPERT, a citizen of the United States, and resident of East Cleveland, county of Cuyahoga, State of Ohio, have invented certain new and useful Improvements in Deep-VVell Pumps, of which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

The objects of the invention are to provide a condensed form of working barrel for a double acting, quadruple valve, vertical force pump, such that it will be adapted for insertion and use in a drilled well having a relatively small diameter.

A further obj eot is to so arrange and construct the several valves and pumping and.

fluid circulating passages, that while capable of free and unimpeded action, the piston and pumping chamber will not be diminished in size or capacity, but the working capacity thereof will be doubled.

A further object is to construct the working barrel of one integral piece and to provide the inlet openings at the extreme lower end of the barrel, and preferably to have all passages communicate with a common inlet source, so that however deep the well the working barrel need not be lowered to its bottom but can be placed at any convenient depth beneath the level from which fluid can be drawn by suction, and all fluid will thereby be drawn from the lowest level, a matter of great importance in pumping brine when the lighter fluid floats upon the top of the heavier fluid.

A further object is to so construct the barrel that all the valves can readily be removed for inspection and repair, and for this reason the barrel need not be placed at a greater depth than will permit of its ready removal for this purpose.

An important feature of the invention lies in the forms of construct-ion. which permit of the withdrawal of the piston and rod, and of the large by-pass valve through which the piston rod passes from the piston chamber for inspection or repair without withdrawing any of the well tubing, or any part of the working barrel.

A further feature is the construction of the large bypass valve which permits of the Specification of Letters Patent.

Application filed May 6, 1907.

Patented June 27, 1911. Serial No. 371,952.

free reciprocation of the piston therethrough without wearing the valve.

Further features are the automatically closing valves which are adapted to close themselves against any natural action of buoyancy caused by the weight of water thereon at a great depth.

To obtain the various advantages desired, I employ a form of working barrel compressed into a single piece and containing a full sized piston and piston chamber and compressed circulating passages superimposed thereover, and of flat lunar shape in cross section and full sized working valves inclosed in full sized chambers reentering the piston chambers and entirely inclosed within the Walls of the barrel. I also employ automatically operated ground hard steel valves which are able to withstand the severe shocks of concussion and yet seat themselves accurately on their seats, so as to prevent the repassing of the fluid. The small valves are also so arranged that they can not become loose or disengaged and the large by-pass valve through which the piston rod passes does not touch the rod or become worn thereby and with the piston can at any time be removed for repair without drawing any portion of the tubing or working barrel.

To overcome the objections stated and to provide automatically seating valves, I employ a working barrel containing the forms and arrangement of passages and rentrant valve chambers and spring pressed valves, and combination and arrangement of the various parts as hereinafter described, shown in the accompanying drawings and specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal central section through the working barrel of the pump, which contains the pump piston and the main and auxiliary valves, altogether four in number, and flow passages located within the barrel by means of which a constant uninterrupted flow of fluid is obtained; Fig. 2 is a vertical section thereof taken on a plane at right angles to the plane of Fig. 1; Fig. 3 is a transverse section thereof taken on line E, E, Fig. 1; Fig. 4 is a transverse section on line D, D Fig. 1; Fig. 5 is a transverse section on line C, C Fig. 1; Fig. 6 is a similar section taken on line B, B Fig. 1; Fig. 7 is a similar section taken on line A, A Fig. 1; Fig. 8 is a bottom view of the barrel, before the pipe joining Y is attached thereto; Fig. 9 is a longitudinal central section through the composite piston showing the construction of the piston of spring pressed wearing parts and metal rings; Fig. 10 is a similar section of the valve and its casing which is located in the piston chamber above the piston, and shows the peculiar manner of forming a seal for the casing, and the spring pressed valve and its seat inclosed within the casing, Fig. 10 is a plan view thereof; Fig. 11 is a similar view of the main valves and removable seats therefor which are attached together one vertically over the other to permit of insertion in the working barrel; Fig. 12 is a similar view ofthe auxiliary inlet valve and removable seat which is inserted in the lower end of the working barrel in close proximity to the main valve and its casing; Fig. 13 is a transverse section of piston on line ac-az, Fig. 9; and Fig. 14 is a similar section on line y-y Fig. 9.

In these views, 1 is the piston chamber or direct rectilinear pumping tube which is of course of the full diameter of the cylindrical piston 2, which is adapted to reciprocate therein; 3 is the piston rod.

In order that the device may pump fluid in a continuous manner four valves are required which with their seats are inclosed entirely within the working barrel of the pump. This action also requires two longitudinal flow passages 4 and 5 which from the extremely attenuated space required are overlapped upon the piston chamber in semiannular or concentric forms of lunar sect-ion so as to afford suflicient space for the passage of the fluid therethrough. The valves themselves must be included within the slender barrel and hence the inlet valves 6 and 7 and their seats 9 and 10 are placed close together at the base of the barrel, 9. thin partition 11 separating them. These valves and their seats and casings thus completely fill the inlet extremity of the barrel.

The outlet valve 12 and its casing 13 is placed vertically above the inlet valve 6 and its seat 9 and the seats are secured together by means of the connecting metal link 14 and casing 16, so that the upper valve 12, its

seat 15, and casing 13 are removable withthe lower valve 6, casing 16 and seat 10, and are supported thereon. The valve seats 9 and 10 are screw threaded for insertion in the screw threaded lower extremity of the barrel, and when the Y portion 17 of the tube 18 below is removed the valves can be withdrawn from the barrel for inspect-ion and repair. The chamber 19 in which the outlet valve 12 is inclosed is cylindrical in shape and enters the main chamber of the barrel below the limit of piston stroke and thus does not interfere with the action of the said piston. This chamber is open below and communicates at the upper end with the passage 4 entering the piston barrel at 20 above the piston and out-let valve 21. The inlet valve 7 and its casing 8 are also located in cylindrical chamber 22 which communicates with the flow passage 5 on the opposite side of the barrel, which has its outlet 23 below the outlet valve 21 and above the piston. The valve 21 is seated within the easing 24, which is in turn firmly seated within the piston barrel at 25, by means of a long taper seat and an outer sheath or sleeve of lead or similar soft metal gives weight to the casing and by its softness makes a fluid tight joint therewith. This valve and seat, are centrally bored to enable the piston rod to pass freely therethrough and the seat is fixed firmly on its seat for this purpose.

As will be seen from the detail figures each valve shown in Figs. 11 and 12, is inclosed within a yoke or cage 26, which is provided in the vertical arms, and each valve is seated firmly upon the inner sleeve or seat, described which is tubular and provided with a central opening 28, for the entrance of the fluid which is discharged through the openings in the cage. Each valve is cylindrical and is provided wit-h a central Opening 29 in which is inserted the spring 30 which presses against the cylindrical abutment 31 fixed in the crown of the cage. In this manner each valve is compelled to return to its seat after it has been lifted by means of the positive action of its spring which is powerful enough to overcome the buoyancy occasioned by the weight of the fluid thereon. Each valve seat is also lowered a little below the level of the inclosing casing so that a perfect seat is assured.

In Fig. 10 the outlet valve 21 is shown and sincethe construction necessarily differs from that of the other valves a detailed description is required. In this figure a cage 33 incloses the valve, which is sleeved over the reduced extremities 34, 34 of the casing 35. This casing is formed of inner and outer shells connected by longitudinal vanes 36, between which water passages are formed. This casing is provided at its lower end wit-h a similar cage 37, for water inlet, and the inner shell is centrally bored for the free reciprocation of the piston rod thereon. A packed gland 38 and cap 39 at the lower end of the casing prevents leakage of fluid, and similar gland 38 and cap 39 upon the upper end of the cage serves a similar purpose. A ring 42 upon the cage enters a central open ing 43 in the valve, and a coiled spring 44 in this opening is compressed against the lower end of the sleeve as the valve rises and insures its seating again firmly in place. The valve seats upon the outer shell of the casing and against a shoulder 45 on the inner shell. The cage 33 is screwed down over the upper end of the casing against a soft metal sleeve 60 which is exteriorly tapered at 46 so as to seat firmly upon the tapered seat 25 in the pump barrel, so that it can not be removed therefrom except by removing the piston. The soft metal sleeve rests against a shoulder 47 upon the casing and 4 the lower annular portion of the cage holds it in position.

The construction of the piston to enable it to endure the pressure and with as little wear or friction as possible, is an important feature of the invention. This is shown in detail in Fig. 9 and comprises the central sleeve 50 secured against the washer 51 and shoulder 52 in the piston rod by means of the nut 53 and washer 54 at the lower end of the rod. Between the washers are sleeved alternating rings 55 of hard metal such as steel, and softer metal such as cast iron 56, and centrally are placed the leather rings 57 threaded over the expansible spring sleeve 58 by means of which they are pressed into intimate contact with the sides of the piston barrel. The cast iron rings are also split so as to be capable of compression and are a little larger in diameter than the steel rings, so that they will find a bearing on the sides of the barrel. In this manner the greatest efliciency and durability are obtained.

The operation of the device is as follows: Upon the upward stroke of the piston the fluid will be drawn into the inlet valve underneath the piston, and on the downward stroke of the piston the fluid thus drawn into the central chamber will be forced through the outlet valve through the side passage 5 andinto the barrel and tubing above the piston and central upper valve. On the downward stroke of the piston a vacuum will be formed above the piston between it and the central upper valve and fluid will be drawn through the inlet valve 7 into the side passage 5 and fill the piston chamber above the piston and as soon as the piston rises the fluid will be forced up through the central upper valve, as the piston is drawing fluid through the inlet valve 6, thus causing the fluid to flow at each stroke of the piston.

I believe myself to be the first to inclose the piston and four valves of a deep well pump within an integral barrel formed in one piece and in which main and auxiliary flow passages and central piston chambers are also formed and within the compass of a drilled well, and to provide suitable valves and seats therefor adapted to perform continuous work, and in which the piston and large by-pass valve through which the piston passes can be removed and inspected and repacked without disturbing the working barrel or tubing.

Having described the invention what I claim as new and desire to secure by Letters Patent is 1. In a working barrel for a drilled well pump, a cylindrical piston chamber and piston and rod therein, a tapered portion of said piston chamber located above the piston travel, a lead coated valve casing seated thereon, and self closing valve therein, passages of flat lunar section on each side of the piston chamber communicating therewith, one passage above, and one passage below said tapered portion of said piston chamber, a valve chamberfor each passage extending into said piston chamber below said piston travel, one chamber being below the other, the lower valve chamber being flush with the lower extremity of the barrel, and the upper valve chamber opening into the piston chamber, a second valve chamber adjacent to the said lower valve chamber and located vertically below the upper valve chamber, and opening into said piston chamber, and a connection for the inlet openings to said lower valve chamber and second valve chamber,-and valve casings in said chambers and self closing valves in said casings, the said valve casings in the said upper and second valve chambers being connected together.

2. In a working barrel for a drilled well, a central piston chamber having a tapered portion, flat longitudinal flow passages cored out of the same integral casting with the piston chamber, one on each side thereof, the one passage opening into the piston chamber above said tapered portion and the other below said tapered portion, inlet valves and chambers therefor located side by side in the lower end of said barrel, communicating with said piston chamber and said lower passage respectively, an outlet valve in the said upper flow passage communicating with said piston chamber below the travel of said piston, an outlet valve in said tapered portion of said piston chamber, spring pressure devices for 010s ing said valves, guides for said springs and a connection for the lower extremities of the said inlet valve chambers and the well tube.

3. In a working barrel for a drilled well pump, a central cylindrical piston chamber and piston and rod therein, said chamber having a tapering portion, flattened passages of lunar section arranged one on each side thereof and cast therewith, a tapered valve casing detachably secured within said tapered portion of said piston chamber, said casing provided with inner and outer shells having vertical flow passages between them, a spring pressed valve seated on both inner and outer shells, the said piston rod passing through said casing and valve, packing glands in the casing for said piston rod, a pair of cylindrical inlet valve chambers in the lower end of the barrel, one of said chambers communicating with one of said flattened passages and the other with the said piston chamber, a third cylindrical valve chamber located in the piston chamber, and communicating with theother fiattened passage, valve casings in said valve chambers each provided with a central opening and a spring pressed valve seated in each casing, the said pair of inlet valve chambers being arranged side by side and communicating with a common inlet pipe.

4. In combination with a cylindrical casing having a central opening, a cage adjustably secured thereover, a cylindrical hollow valve adapted to seat upon the casing, a coiled spring Within the valve, and a central depending abutment for said spring, attached to the upper end of said cage and extending into said valve.

5. The combination with the piston chamber and piston and rod of a pump barrel,

of a tapered. portion within said chamber, a tapered valve casmg thereln, sald casing comprising outer and inner shells and connecting arms therefor, a lead sheath for.

said casing fitting said tapered portion of said chamber, a cage adjustably secured over said casing, a reduced portion of the inner shell of said casing forming a shoulder therewith, a tubular valve sleeved thereover, and seated on said shoulder and outer shell, a ring about the reduced portion of said inner shell engaging said cage a spring in said valve adapted to be engaged by said ring, said casing provided with a central opening for the passage of said piston rod and packing glands in said casing and cage. In testimony whereof I hereunto set my hand this 1st day of May 1907.

SAMUEL LIPPERT. In presence of- WM. M. MONROE, GEO. S. COLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C."

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