US3679178A - Apparatus for setting of rods for deep well installations - Google Patents

Apparatus for setting of rods for deep well installations Download PDF

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Publication number
US3679178A
US3679178A US12307A US3679178DA US3679178A US 3679178 A US3679178 A US 3679178A US 12307 A US12307 A US 12307A US 3679178D A US3679178D A US 3679178DA US 3679178 A US3679178 A US 3679178A
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United States
Prior art keywords
pumping rod
suspension
rod
hydraulic cylinder
disposed
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Expired - Lifetime
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US12307A
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English (en)
Inventor
Emil Lodynski
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FRIEDRICH LEUTERT Firma
LEUTERT FA FRIEDR
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LEUTERT FA FRIEDR
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18184—Crank, pitman, and lever

Definitions

  • Two clamping means including an upper clamping means and a lower clamping means. are operable on the Feb. 21, 1969 AUStl'la ..A rod during the p p g operation.
  • a suspension rail is operativeiy connected with the pumping rod, and a hydrau- ..254/93Bl6(a;7ggi 6 cylinder with a piston reciprocates therein and is insertable betweentheupperclampingmeansandthesuspensionrail.
  • Flew Search "L,'Z);i' ?bg fg ggzfi receiver container is adapted to feed a liquid medium under low pressure suflicient for lifting of the unloaded pistons and [56]
  • Reerences Cited returns the liquid medium from the cylinder caused by the pressure originating from the suspension load by control with UNITED STATES PATENTS a throttle valve 3,147,946 9/1964 Hale ..91/4 X 6 Claims, 10 Drawing Figures BQSYLNB Mi 2 5 I872 SHEET
  • the present invention relates to an apparatus for deep well pump installations during operation.
  • the length of the piston stroke varies appreciably relative to the stroke of the rod, and in addition the variations of the level and the gas ratios offer an interruption of the operation, exercise an influence, so that a correct setting of the piston is performed with difficulty from the start during the stand still of the pump block.
  • a lowering and a lifting of the suspension during the operation is rendered possible over the entire range of the rod and particularly without special force application by the operator, who can perform alone the required labor. It can, contrary to the known apparatus, if necessary, be applied at any pump installation and after performance, can be dismounted again without interruption of the operation and can be set in at another place. With one single apparatus a series of probes can be operated.
  • the lowering of the suspension should not be performed suddenly; rather, it should be performed slowly and with a slow start under continuous control of the operator by sensing and, by dynamo meter measurings, respectively.
  • hydraulic cylinders are preferably suitable, which cylinders are connected by means of a conduit with a receiver container, in which are disposed in addition to a shut-off valve, .a finally controllable throttle valve and a relief valve, which valves are disposed parallel to each other.
  • mechanical means can be applied.
  • the friction resistance with or without application of resilient buffer inserts for braking of the lowering movement can be used.
  • the braking can be obtained by transformation of the energy freed during lowering into mechanical labor.
  • a preferred embodiment of the pressure medium receiver container resides in the fact, that the latter has at least a partly flexible wall, for example, the form of bellows, and is built into a container receiving a pressure gas or is equipped with a spring, which has a tendency to reduce its volume.
  • a releasable clamp or the like is provided on the rod-packing box, as well as a slotted wedge, slidable onto the rod, by the stepwise insertion of which between the clamp and rodpacking box, a slow rising or lifting of the suspension can be obtained.
  • FIG. 1 is a front elevation of a hydraulic lowering device
  • FIG. 2 is a side elevation of the device shown in FIG. 1;
  • FIG. 3 is a perspective view of the same device
  • FIG. 4 is a schematic showing of the apparatus of the present invention in which the cooperation of the cylinder with the receiver container and of the valve can be ascertained;
  • FIGS. 5, 6 and 7 are perspective views of the connecting point of the rods with four horsehead cables of a deep well pump in three different operative positions.
  • FIGS. 8, 9 and 10 depict the valve positions corres-ponding to the position shown in FIGS. 5, 6 and 7.
  • the apparatus designed in accordance with the present invention comprises hydraulic cylinders 1 and 1', which are connected rigidly below by means of a bridge 2.
  • the bridge 2 supports itself downwardly over a lower clamp 16 onto the suspension and has in its center a recess 3, which is adopted for sliding on the rod.
  • the two pistons 4 and 4' can move upwardly only up to abutments (not shown) and are connected at their top by means of a bridge 5, which assumes the rod load.
  • this upper bridge 5 has a recess 6 for the eccentric mounting onto the rod.
  • safety devices 22 and 23 are provided, in order to prevent the removal of the releasing apparatus in its mounted state.
  • a joint conduit 7 is in communication with the cylinders l and l, which conduit 7 leads to a receiver container 8 by means of a valve combination 10, 11 and 12.
  • This container 8 has a capacity which is slightly more than double compared with the volume of the two hydraulic cylinders jointly. While the hydraulic cylinders l and I assume pressures up to 700 atmospheres above atmospheric pressure, the pressure in the receiver container 8 moves between 1 and 3 atmospheres above atmospheric pressure. Inside of the container 8 is a bellows 9 which serves for the reception of liquid, while the remaining space of the container is filled with air and gas, respectively, and forms an elastic buffer. Gas and liquid cannot mix with each other in this manner.
  • the valve combination comprises a stop valve 10, a return valve 11, as well as a throttle valve 12, which latter two valves are arranged parallel relative to each other.
  • a preliminary pressure 1 3 atmospheres above atmospheric pressure is present, which is sufficient to drive the liquid through the return valve 11 into the unloaded cylinders and to lift the pistons up to an abutment. If, however, the suspension load, which moves in the range of a few tons, passes onto the pistons, the liquid flows from the cylinders through the open stop valve 10 and the throttle valve 12 into the bellows 9, while the return valve closes automatically.
  • throttle valve 12 By setting of throttle valve 12, one has it in his hands to control the speed of the lowering of the pistons.
  • any flow between the cylinders and the container can be stopped and thus the pistons are retained in a pre-determined position.
  • a closing screw 13 On the container 8 is arranged also a closing screw 13, with a return valve, which serves the purpose of pumping the container to the predetermined preliminary pressure.
  • FIG. 5 shows the preparation for insertion of the releasing device
  • the horse-head" cables 14 of the pump block carry the suspension rail 15, on which the suspension load rests.
  • the rod 18, which forms the upper closure is provided a lower clamp 16 and an upper clamp 17, the latter being shown in the positions A and B.
  • the lower clamp 16 is tightened, and the upper clamp 17 is loosened and lifted to the position B so far, that the releasing device has space between the clamps l6 and 17. It is of greater advantage, to build in the releasing device with inserted pistons.
  • the stop valve 10 and the throttle valve 12 are closed, as shown in FIG. 8.
  • the insertion during operation takes place by sliding the rod into the slots 3 and 6 and following aligning of the releasing device against the lower clamp 16 and the built-in intermediate members, respectively.
  • resilient resting balls or magnets are built into the slots 3 and 6 (not shown), which retain the releasing device on the rods.
  • this figure shows the position during the relifting of the rod 18.
  • a further clamp 19 and a wedgeshaped catching fork 20 must be inserted between the packing box 21 and the rail 15.
  • This additional clamp 19 is preferably a conventional two-part clamp with a hinge; however, equipped with a bolt which can be released and tightened during operation.
  • This clamp 19 is secured in such a way on the rod 18, that it comes to stay at the lower depth point of the pump movement just above the rod packing box 21.
  • the throttle valve 12 is closed during lifting, which position is shown in FIG. 10, and the liquid can thus flow only through the return valve 11.
  • the upper clamp 17 moves for the same length from its support, at the lowermost point of the pump movement, which causes a following of the pistons 4 and 4'.
  • the lifted position is retained, since the return valve 11 prevents a return of the liquid into the bellows 9.
  • the rod can be lifted again relative to the suspension rail 15, slowly and stepwise.
  • the stop valve 10 In order to restore the normal state of the completed new setting of the polishing rod, the stop valve 10 is closed, the lower clamp 16 is tightened, and the upper clamp 17 is loosened. Now the releasing device can be lifted. Finally, the upper clamp 17 is moved again into the position A (FIG. 5), whereby the normal operational state is attained again.
  • this sleeve In some fields, it is usual to support the suspension load not with a clamp, but rather with distancing sleeves against the pushing disposed at the upper end of the rod. In such cases, in order to be in position to apply the above-described method, this sleeve must be formed clamp-like, so that it can be loosened during operation, so that it is thus flooded in longitudinal direction and held together by means of a bolt, which can be operated during operation in accordance with the normal procedure.
  • the lower clamp 16 must be present by all means, since only a securing of the rod at this point makes the operation possible.
  • the place for the releasing device is created by removal of the corresponding number of distancing sleeves. The latter must finally be completed after in accordance with the desired setting and the rod sleeve must be mounted again.
  • one-part clamps are used, as they have been developed by the inventor. They have the advantage that their arcs of contact find places in the recess of the horsehead path and on the other hand also a dynamo meter can be inserted over their back.
  • pump arrangements in which in their highest lift positions between the horsehead lower edge and the suspension rail, so much space is present that the upper clamp cannot enter the range of the horsehead path; also conventional two-part rod clamps with hinges can be inserted, as long as they are equipped with bolts, which makes possible the loosening and the closing during the pump operation.
  • the counter pressure exerted on the bellows 9 is not necessary to be produced by a gas present in the container 8, rather also a spring can be provided for causing the compression of the bellows 9.
  • An apparatus comprising a pumping rod for deep well pump installations
  • two clamping means including an upper clamping means and a lower clamping means, operable on said pumping rod during the pumping operation,
  • suspension means of a deep well pump installation including a suspension rail operatively connected with said pumping rod,
  • a receiver container means including a throttle valve and for feeding a liquid medium under low pressure sufficient for lifting of said piston when unloaded and for returning said liquid medium from said hydraulic cylinder caused by pressure originating from the suspension load by control with said throttle valve, whereby the suspension means can be set during operation.
  • said throttle valve is a finely controllable valve
  • a return valve said valves operatively disposed in said receiver container means
  • said throttle and return valves are disposed parallel relative to each other and in series with said stop valve.
  • a slotted wedge means slideable out of said pumping rod.
  • a deep well device comprising in combination a suspension rail and cables for supporting said suspension rail,
  • a releasing device releasably insertable onto said pumping rod above said suspension rail
  • a lower clamp disposed on said pumping rod on said suspension rail and said releasing device resting on said lower clamp, the latter including means for tightening and loosening said lower clamp on said pumping rod,
  • an upper clamp disposed on said pumping rod, and movable to positions thereon spaced from said lower clamping rod for the insertion of said releasing device therebetween, said upper clamp including means for tightening and loosening said upper clamp on said pumping rod,
  • said releasing device including a hydraulic cylinder and a piston operatively mounted therein and a receiver container holding a hydraulic fluid and having a conduit means connected to said hydraulic cylinder,
  • a stop valve disposed in said conduit means adjacent said receiver container and a one way return valve permitting fluid to flow only in a direction from said hydraulic cylinder to said receiver container, and a throttle valve disposed in parallel in said conduit means adjacent said hydraulic cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
US12307A 1969-02-21 1970-02-18 Apparatus for setting of rods for deep well installations Expired - Lifetime US3679178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT175069A AT291881B (de) 1969-02-21 1969-02-21 Einrichtung zum Verstellen des Gestänges von Tiefpumpanlagen während des Betriebes

Publications (1)

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US3679178A true US3679178A (en) 1972-07-25

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ID=3520190

Family Applications (1)

Application Number Title Priority Date Filing Date
US12307A Expired - Lifetime US3679178A (en) 1969-02-21 1970-02-18 Apparatus for setting of rods for deep well installations

Country Status (3)

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US (1) US3679178A (de)
AT (1) AT291881B (de)
DE (1) DE1936322A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036473A (en) * 1975-02-07 1977-07-19 Kenneth Donald Kloster Spring compressor tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051237A (en) * 1961-01-30 1962-08-28 Jersey Prod Res Co Apparatus for varying well pump stroke
US3147946A (en) * 1961-10-13 1964-09-08 Vacudent Mfg Company Utility stool
US3363475A (en) * 1965-12-13 1968-01-16 Antoinette K Foster Shock absorber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051237A (en) * 1961-01-30 1962-08-28 Jersey Prod Res Co Apparatus for varying well pump stroke
US3147946A (en) * 1961-10-13 1964-09-08 Vacudent Mfg Company Utility stool
US3363475A (en) * 1965-12-13 1968-01-16 Antoinette K Foster Shock absorber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036473A (en) * 1975-02-07 1977-07-19 Kenneth Donald Kloster Spring compressor tool

Also Published As

Publication number Publication date
DE1936322A1 (de) 1970-08-27
AT291881B (de) 1971-08-10

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