US993520A - Deep-well pump. - Google Patents

Description

J. HAHN.

DEEP WELL PUMP.

APPLICATION FILED SEPT. 8, 1908.

Patented May 30, 1911.

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@NITE man T. FIQE.

JOHN HAHN, OF LOS ANGELES, CALIFORNIA.

DEEP-WELL PUMP.

Application filed September 8, 1908.

, is a specification.

An object of this invention is to make provision for increased speed of stroke and increased delivery of liquid at each stroke. This is accomplished by providing novel means for separating from the liquid before it reaches the standing-valve, gas or air contained in such liquid, so that the same will not operate to prevent rapid seating of the valves of the pump. By this arran ement the valves are allowed to seat sudden y, and the pump operates to discharge liquid that is more free from bubbles of air or gas than withformer pumps. In this way much loss of eiiiciency from back flow of .liquid through the valve-seats, or from occupation of space in the tubing by the air or gas, and also from the slowness of stroke heretofore necessary, is avoided. Any air or gas which reaches the working-barrel of the pump is liable to cause an emulsion of the oil under the action of the piston, and the production of such emulsion will be reduced in the ratio in which the elimination of the air is effected.

An object ofthe invention is to avoid pro ducing. such emulsion.

Another object is to provide a cheaper and simpler construction by which the liquid is prevented from flowing back around the of the standing valve cage and the seat thereforis very slight and the tapered portion is elongate, so that when the standing valve cage is .driven into its seat the joint will be hermetrically sealed without the use of leather cups or any other form of extension from the body of the standing valve cage and in this manner the passage for liquid inside the valve can be made of the maximum size and all the advantages of the packing heretofore used may be secured.

Another object is greater economy in replacing worn parts.

Specification of Letters Patent.

This is effected by providing two ouplings, one connected with the pump-tubing, and vthe Other with the Patented May 30, i911.

serial No. 452,151.

anchor or suction pipe, connecting said cou-- plings by a nipple, and providing one or more detachable liner-sections which are held in place by and between the couplings and constitute the working-barrel of the pump. By this means, when the workingbarrel becomes worn it is only necessary to detach the nipple from one of the couplings then remove the lining or the worn section thereof, and replace it with new. In order to minimize the length of lining which must be replaced at any time because of wear, a plurality of sections may be employed, care being taken in constructing the pump that a single section shall be made to extend only for that length subject to maximum wear, while another section may be made to extend along the portion subject to another degree of wear, and so on with each section, so that the section most subject to wear may be replaced independently of those sections less subject to wear, thus leaving the latter sections to be further worn and afterward removed and replaced, and so on. In this connection the invention consists in the construction of the sectional liners with spigot joints whereby the removal of any section and replacing the same withl new may be accomplished at' minimum expense of time, labor and material.

Another object is to provide a construction ywhereby the standing-valve cage is detachably lockedjin its seat.

Another object .is to improve the construction of valve-cages so-as to afford a hold for fishing-tools, and also to provide increased strength between the sides of the cages and the pin or socket by which the same is tobe connected with the pump-rod or other attachment for lifting the cage.`

The invention may be` applied in different forms, and I do not limit the same to any specific form of construction.

The accompanying drawings illustrate the invention in a form I at present .deem most desirable.

Figure'l is a fragmental, vertical section/ of/a pump embodying this invention and located in a well-casing. Portions between the valve-cages are broken away `to contract the view. Fig. 2, is a fragrnental, sectional detail of theostanding-valve cage and the parts near the same. Fig. 3 is a sectionon line ma, Figs. 1 and 2. Fig. 4 is a section on line Fi s. 1 and 2. Fig. 5 is an elevation of the 10c ing bushing that holds the cage the spigot joint.

extension in place. Fig. 6 is an axial sec' tion of said bushing. Fig. 7 is adetailfof 6 is the usual standing-valve, and.v 7 a j standing-valve cage. The pump is provided below the standing-valve with an air or gas trap. In the drawing said trap is 1n the -form of a chamber 8 between an imperforate portion 9 of the suction-pipe 10 and a conduit 11 adapted to direct liquid to the standing-valve said conduit being provided with an inlet formed by orifices 12, 13, and having an imperforate portion 14'above such inlet.-

The suction-pipe 10 has an inlet formed of numerous perforations 15 through which the liquid may flow tothe conduit, said suction-pipe forming a chamber outside and aroundv such conduit to intercept air or gas on its .way to the conduit; an outlet 16 being provided for air or gas from the chamber below the standing-valve. The upper part of the conduit 11 is provided with an outlet 17 to communicate with the outlet 16 so that x air or gas which may find its way into the conduit 11 may escape to the chamber and thence through the outlets.

The principle upon which the air or gas is intercepted and separated from the liquid, is that the liquid must flow across the intervening space between the suction-pipe 1() and the conduit 11, 'and during the passage of the liquid across such space the air or gas will rise from the liquid, thus becoming entrapped between the imperforate portion 14 of the conduit and the imperforate portion 9 of the suction-pipe, and as'the air or gas passesthrough the inlet orifices'12, the air that has' not escaped into the chamber 8 will gas may becomemore readily separated'frtmfl` the liquid. The conduit 11 forms a downward extension of the valve-cage'p'7, being screwed into said valve-cage, as shown at 19. The lower end of the valve-.cage is a spigot being nearly cylindrical and very slightly tapered, as shown at 20. The` novelty of the taper portion of the valve cage and lits seat consists in the very elongate and slight taper, so that the same 1s in the form of a spigot joint. The standing valve cage 7 is Aformed of a single piece having a lower end provided with an elongate taper portion as stated, which directly seats in the spigot joint seat 27 so that a maximum opening or bore may be provided within the valve cage to accommodate the liquid. A further advantage of'making the standing valve cage of a single piece with an elongate taper portion 2O is that the valve cage is thus adapted to be seated in a turret lathe and turned accurately and the seat for said tapered portion may also be turned in the same manner. This method of seating and mounting standing valve cages is new and'is regarded as a very important step in advance over previous construct-ions as it positively seals the joint at the bottom of the cage without packing and allows the cage to be drawn from and replaced i'nto the seat therefor without any destruction of packing and also without liability 'of pieces ,of the packing lodging in the tubing when the standing valve is withdrawn, and it also considerably increases the output of the well over that of lthose supplied with pumps having such standing valve cages as were previously constructed.

21 is a coupling connected with the `pumptubin 3 by means of a nipple 22 and a coupllng 23. Said coupling is screwed on to the nipple 22 and is provided internally with a seat 24 fora bushing 25; the upper end of which is provided with an external flange 26 to rest on the shoulder 24. Said bushing is provided at lits upper end with 'a taper-seat 27 for the taper portion 20 of the standing-valve cage, thus forming the spigot joint between the standing-valve cage and the bushing. Said bushing ts tightly in and extends downward from the coupling 21, and its inner face is inwardly bent, as shown at the inward bend or projection 28, and is in resilient engagementwith the conduit 11 so as to hold the same frictionally. Such'resilient engagement may be effected in various ways.v In the form illustrated in the drawings, the bushin 25 and the con duit 11 are both made resi ient or bendable, this being done by slotting the bushing land conduity longitudinally. The. slots 29, of the conduit arenarrow,"thus forming a number ofbars 30, the outer face of `cach of 'which is"4 outwardly bent, asshown at 31, to j as to insureescape of air and gas through the vslots durino engaggnientr between the bars of the conduit and those of the bushing, .regardless of how the conduit may be 'the couplin eeaeao turned. Means are provided to hold the bushing in the seat in the coupling, the same consists of a liner 33 which may be made of one or more sections held in place between l21 and 23, which are connected by the nipple 22, the same being screwed into said couplings `todraw them tightly toward each other to cl'anp the liner against the bushing. Y The couplings, the nipple and the liner, constitute the workin -barrel of the pump, 'and said liner is held in place by slip-joint construction, as shown at 34 and 35. When the liner is made of two sections, as shown in Fig. 1, said sections may also be united by a spigot-joint, as shown at 36, so asto be perfectly tight.

The valve-cages are provided with means for detachable connection with a pump-rod or other ap liance. For this purpose 37 is a threaded pin, and 38 a threaded socket in the working and standing valve-cages respectively. Below such means for detachable connection .the cages are provided with outwardly extending, overhanging shoulders shown at 39, the same being in an eX- tension 41, above the cage proper shown at 7. Said shoulders may slant inwardly and upwardly as clearly shown in Fig. 2, for engagement with the fishing-tool, not shown. A web 42 is provided between the shoulders 39 to give strength and rigidity to the upward extension 41. The valve-way 43 is limited atthe top by shoulders 44 and has lateral outlets 45 leading from the valveway, and there are below and above said outlets solid walls or rings 46 and 47, the lower walls 46 forminga cylindrical bore 48 to ,receive the valve-seat, said bore being threaded to receive the downward extension 14. rlhe solid wall above the valve-way forms the hollow upward extension 41 terminating in the threaded socket 38 and being provided below said socket with the lateral ports 49.

ln practice, when the standing valve-cage is lowered` into position its extension will seat friction-tight in the bushing, and will seat in the taper-seat and will be held therein by frictional engagement of the extension with the bushing. rlhe piston will be operated b a pump-rod in the usual way, and the suction thereof will cause the liquid to How horizontally across the space between the suction-pipe 10 and the extension. The liquid thus Hows-horizontally, and the air or gas will rise therefrom and accumulate around the inside wall of the suction-pipe 9 and will ascend to the outlet 16. Any air that may reach the interior of the extension may flow up along the walls of such extension and may ow out through the slits or slots 29 in the extension and through slots 40 inthe bushing, and thence out'through the outlet 16; or if the air reaches so high as the outlet 17 the same may flow out from -thence and through the slots 40, and thence through the outlet 16.

In my copending application for patent Serial No. 480,787, filed March 1, 1909, I have shown the combination with the pump tubing of a working barrel composedof sections that are united inside the pumptubing by slightly tapered nearly straight elongate spigot joints in4 which the engaging surfaces are of considerable length and nearly cylindrical, so that the sections are united inside -the pump ,tubing by friction tight elongate spigot Joints, said construction being a completion of the suggestion of the spigot joint shown at 36 herein but not claimed herein for the reason that the same is more fully shown in said other application and is fully claimed therein.

claim:

1. A ump provided ybelow its standingvalve with a conduit to direct liquid to such valve, said conduit being provided with an inlet and having an imperforate portion above such inlet, means to form a chamber outside such conduit to intercept the air or gas on its way to the conduit, an outlet being provided for air or gas from the upper part of said conduit and said chamber.

2. A pump provided below its standinglvalve with a conduit to direct liquid to such valve, said conduit being imperforate for a lportion of its lengt-h and provided with an inlet below such portion, a pipe around such conduit, the same having an imperforate portion corresponding to that of said conduit and being provided with an inlet below such imperforate portion, pump tubing, and a coupling between the pipe and tubing, an outlet being provided through the coupling from the interior of the pipe above said imperforate portion.

3. A pump provided below its standingvalve with a conduit leading vertically to the standing-valve and provided with a lateral inlet, a pipe forming a chamber around said conduit and provided with an inlet to direct liquid approximately horizontally toward the inlet of the conduit, an outlet being provided at the top of the chamber for the trapped air or gas. p

4. A pump provided below its standingvalve with a conduit to direct li uid tothe standing-valve, means outside said conduit to direct liquid horizontally tothe conduit, and means to receive air or gas which may rise from the horizontally moving liquid, an outlet being provided for such gas.

5. A pump provided with a standingvalve having a downward extension which is provided with an. imperforate portion and with an inlet below the imperforate portion, a pipe outside said downward extension, the same "being provided with an imperfoi'ate portion corresponding with that of the' downward extension, and with an inlet below such imperforate portion to direct liquid toward the inlet of the downward extension, and a coupling connected with the pump tubing and provided with an outlet, said pipe being screwed into said coupling to deliver air or gas to said\outlet.

6. A pump provided with a standingvalve having a downward extension that has an imperforate'portion and with an inlet below the imperforate portion and an outlet above the imperforate portion, a pipe outside said downward extension, the same being provided with an imperforate portion around that lof said -downward extension, and with an inlet below such imperforate portion to direct'liquid toward the inlet of the downward extension, and a coupling connected with the pump tubing and provided with an outlet, said pipe being screwed into said coupling to deliver air or gas to said eoutlet.

7 A pump provided with a standingvalve cage that has a downward extension, a portion of which extension is imperforate, an inlet being below said imperforate portion and a lateral outlet above said imperforate portion, a bushing forming a seat for the standing-valve cage, the same frictionally engaging said downward extension, and a suction-pipe around said extens'on provided with an imperforate portio corresponding to that of the downward extension, and also provided below said imperorate portion with an inlet, and above such portion with an outlet. V v

8. In a pump the combination with a suction-pipe of a coupling secured to the pipe and provided with an outlet leading Jfrom the interior of the pipe, a standing-valve cage provided with a downward extension inside the pipe, and a bushing in the coupling, the same forming a seat for the standing-valve cage and being in resilient enagement with the extension, and means to hold the bushing in position.

9. A pump provided with tubing having a coupling a standing-valve cage and having a downward extension, pling to seat the cage and to resiliently engage the extension. i

10. In a pump provided with tubing having a coupling a standing-valve cage provided with a resilient barred extension and a bushing in the coupling to support the cage and engage the bars of such extension.

11. A pump having a suction pipeand a standing valve seat and provided ,with a laterally perforated coupling that is` Vconnected with the suction-pipe of the pump and carries the standing-valve s eat, the per-y` forations being between said pipe and said\ seat.

12. The combination of a suction-pipe, a coupling screwed thereto and provided lwith a seat, a bushing seated in the seat and proconnecting the suct1on-pipe of a bushing in the cou-y vided with a ange and a taper-seat, a standing-valve cage seated in the taper-seat, a liner one end of which rests on the bushing, another couplingl provided with a seat in which the otherend of the liner is seated, and a nipple connecting the couplings.

13. The combination of a suctionipe Aa coupling screwed thereto and provide with a seat, a bushing seated in the seat and provided with a flange and a seat, a standingvalve cage seated in the latter seat, a liner one end of which rests' on the bushing, another coupling provided with a. seat in which the other end of the liner is seated, and a nipple connecting the couplings.

14. A valve-cage provided with a valveway having lateral outlets, walls below and above said outlets and vertical passages inside said walls below and above said valve-way, said valve-cage being also provided with a hollow upward extension above the upper solid wall, said extension being provided with means above said ports for detachable connection with the pump-rod, and said upward extension being provided with outwardly extending, overhanging shoulders below said means and above said ports l 15. A laterally erforated coupling for a pumprwith the working-barrel so 'as to allow entrapped air to escape betweensuch pipe and barrel.

16. A pump provided with a suction pipe that has an inlet formed of numerous perorations and has an imperforate ortion above said inlet.and is also provideV at its top with an outlet for entrapped air or gas.

17. In a pump the combination with a standing valve and tubing, of a working barrel and the conduit set forth rovided with a perforate portion, an imper orate portion above the perforate portion and bendable bars above the perforate portion.

18. Iny a pump the combination with a standing valve and tubing of a workingvbarrel and the condu'rt set forth provided with a perforate portion, an imper orate portion above`- the perforate portion and projecting bars above the perforate portion.y

19. `In a pump, a standing valve cage provided .with a resilient extension and a resilient bushing to seat the cage and engage the resilient portion of the extension.

20. Ina pump the combination with the working barrel and the pump tubing, of ametallic slotted resilient conduit and means carried by the tubing held down by the working barrel and arranged outside said conduit to rictionally engage the same.

21. ln a pump a metallic slotted resilient conduit having an outward projection, pump ftubingoutside said resilient conduit, means between said tubing and conduit to engage said outward projection to frictionally retain the resilient conduit anda workand with solid with lateralports and ing barrel arranged to hold down said pump tubing; and an anchor connected with means. the tubing forming a chamber around the 22. In a punipthe combination with the conduit and downward extension. g pump tubing and the working barrel, `of a In testimony whereof, I have hereunto set 15 5 metallic slotted resilient conduit; a downmy hand at Los Angeles, California,' this Ward extension of tle working barrel 29th dafy of August 1908. around said conduit an having an inward projection, said conduit and said downward JOHN HAHN extension being in frictional engagement In presence of- 10 with each other, and said downward exten- JAMEsfR. TOWNSEND,

sion being frictionally connected with the M. BEULAH TOWNSEND.

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