EP3574214B1 - Taumelpumpe mit taumelscheibe - Google Patents

Taumelpumpe mit taumelscheibe Download PDF

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Publication number
EP3574214B1
EP3574214B1 EP18700369.4A EP18700369A EP3574214B1 EP 3574214 B1 EP3574214 B1 EP 3574214B1 EP 18700369 A EP18700369 A EP 18700369A EP 3574214 B1 EP3574214 B1 EP 3574214B1
Authority
EP
European Patent Office
Prior art keywords
pump
drive shaft
plate
rotary plate
pistons
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18700369.4A
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English (en)
French (fr)
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EP3574214A1 (de
Inventor
Julien TROST
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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Publication of EP3574214A1 publication Critical patent/EP3574214A1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • F04B1/124—Pistons
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • F04B1/148—Bearings therefor
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/16—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having two or more sets of cylinders or pistons

Definitions

  • the present invention relates to the field of pumps, in particular for high pressure pumping, in particular for drilling operations.
  • crankshaft pumps are the most widespread in all sectors of industry: capital goods, the oil, gas and food industries, the automotive sector, construction (heating, wells, air conditioning, water pumps, etc.) and more specifically for the treatment of water and waste (water and sanitation network).
  • these pumps have limits in terms of power, pressure / flow torque (limited by "water hammers” generated by the sinusoidal pressure of the crankshaft), weight, efficiency and service life.
  • they do not allow variable displacement and therefore lack flexibility of use.
  • Pumps designed with a barrel operate using a turntable system that actuates the different pistons one after the other.
  • the opposite piston is in the discharge mode, which provides a flow constant upstream and downstream of the pump.
  • the distribution of the positions of the pistons with a guide by the barrel ensures a progressive distribution of the forces during the rotation of the shaft driven by the motor.
  • cylinder pumps with variable displacement for which the inclination of the rotary plate is adjustable are described in the patent applications: US 2014/0186196 , US 6,176,684 , US 5,295,796 .
  • the inclination adjustment systems are either a servo-piston, or a system with an electric motor and cams, or a hydraulic system. These systems are complex and are not completely satisfactory.
  • the present invention relates to a barrel pump with a swash plate, for which the angle of inclination of the rotary plate relative to the drive shaft is adjustable by means of a finger ball joint.
  • the inclination of the platform is continuously adjustable, which allows a variable displacement.
  • the pump according to the invention allows good flexibility thanks to the continuous variation of the unit displacement, as well as good reliability thanks to the possibility of progressive start-up of the pump.
  • the embodiment in the form of a barrel pump allows a compact design of the pump.
  • the pump comprises a return rod, said return rod being in a ball joint connection with said housing and said swash plate.
  • the angle of inclination of said rotary plate and of said swash plate relative to the axis of said drive shaft is between 70 and 90 °.
  • said rotary plate comprises a groove in which the finger of said ball joint moves, said groove being substantially parallel to the axis of said drive shaft.
  • said pump comprises means for controlling the inclination of said rotary plate relative to said drive shaft.
  • the energy of said control means comes from a source external to said pump, in particular by means of a pressurized fluid.
  • the energy of said control means is taken from said drive shaft.
  • said cylinder block is fixed relative to said housing.
  • the invention relates to a use of said barrel pump according to one of the preceding characteristics for a drilling operation, in particular for the injection of drilling mud into a wellbore.
  • the present invention relates to a barrel pump with a swash plate.
  • the purpose of the barrel pump is to pump a fluid (for example: water, oil, gas, drilling muds, etc.) by means of a linear displacement of several pistons.
  • This type of pump has the advantage of being compact, of having interesting mechanical and volumetric outputs, an excellent weight / power ratio.
  • barrel pumps with a swash plate are suitable for high pressure pumping.
  • the rotary plate is driven by the drive shaft by means of a finger ball joint, the position of the finger ball joint determining the inclination of the two plates (rotary and oscillating) with respect to the drive shaft.
  • a ball joint with a finger is a connection between two elements (here the drive shaft and the rotary plate), which has four degrees of connection and two degrees of relative movement; only two relative rotations are possible, the three translations and the last rotation being linked.
  • the finger of the ball joint makes it possible to adjust the inclination of the plates relative to the drive shaft.
  • the pump comprises means for controlling the finger ball joint, and therefore the inclination of the plates relative to the drive shaft.
  • the inclination of the rotating and oscillating plates is continuously adjustable, which allows variable displacement.
  • the inclination of the plates influences the stroke of the pistons.
  • the pump according to the invention allows good flexibility thanks to the continuous variation of the unit displacement.
  • the pump according to the invention allows good reliability thanks to the possibility of gradually starting the pump: for example, during start-up, the angle of inclination may be small, and subsequently, it may be increased according to the desired conditions (flow rate and pressure of the fluid). This reliability cannot be obtained with a pump whose inclination of the plates is fixed, or for which the inclination cannot vary continuously.
  • the trays may have substantially the shape of a disc. However, the trays can have any shape. Only the compression chambers (and the pistons) are distributed in a circle.
  • the pump according to the invention can include a number of pistons between three and fifteen, preferably between five and eleven.
  • a high number of pistons provides a continuous flow upstream and downstream of the pump.
  • the input rotational movement (drive shaft) is first transformed into an oscillating movement (swash plate) and secondly into a translational movement, i.e. say a back and forth movement (pistons).
  • the reciprocating movement of the pistons in the compression chambers ensures the pumping of the fluid.
  • the pump further comprises an inlet and an outlet for the fluid to be pumped.
  • the fluid passes through the inlet of the pump, enters a compression chamber, is compressed, and then discharged from the pump through the outlet by means of the piston.
  • pivot connections are formed by bearings or bearings, promoting the relative movement of the elements.
  • the inclination can be adjusted by moving the finger of the ball joint in a groove made in the rotary plate, the axis of the groove being able to be parallel to that of the axis rotation of the drive shaft.
  • the continuous adjustment of the inclination (for example the movement of the finger in the groove) can be ensured in various ways, for example, by means of a pressurized fluid supplied to the finger ball joint by means of a specific circuit.
  • the energy necessary for the adjustment of the inclination can be taken from the energy used for the input shaft.
  • the energy required to adjust the inclination can come from an external source (for example an electric motor).
  • the cylinder block (or barrel) is fixed relative to the crankcase.
  • the energy input to perform the pumping is carried out at the level of the drive shaft only, by the rotation thereof; the number of rotating parts is thus limited.
  • the pump further comprises a return rod.
  • the return rod is arranged between the swash plate and the housing.
  • the return rod is in a ball joint connection with the housing and with the swash plate.
  • the return rod makes it possible to prevent the rotational movement of the swash plate around its axis.
  • the swash plate is driven only by an oscillating movement.
  • the angle of inclination of the turntable relative to the axial direction of the drive shaft is between 70 ° and 90 °.
  • the rotary plate (and a fortiori the swash plate) is inclined at an angle between 0 and 20 ° with respect to a radial direction of the drive shaft.
  • the figures 3 and 4 illustrate, schematically and in a nonlimiting manner, a barrel pump according to one embodiment of the invention.
  • the figure 3 is a three-dimensional view, in which the housing and the compression chambers are not shown.
  • the figure 4 is a kinematic diagram of the pump. In these figures, a single piston 3 is shown. However, the pump according to the invention comprises at least two pistons, these are distributed circumferentially within a cylinder block.
  • the drive shaft 5 is rotatably mounted in a housing 11.
  • the drive shaft 5 is rotated by an external source, not shown, for example a machine. electric and a gearbox.
  • the drive shaft 5 drives the rotary plate 2 by means of a ball joint with finger 8.
  • the position of the ball joint makes it possible to adjust the inclination of the rotary plate 2 relative to the drive shaft 5
  • the rotary plate 2 is linked to a swash plate 7 by a pivot connection along the axis of the rotary plate.
  • the pump 1 further comprises a return rod 9 arranged between the swash plate 7 and the casing 11 by means of ball joints. The return rod 9 prevents the rotation of the swash plate 7 about its axis.
  • the pump 1 comprises a piston 3 driven by a translational movement (back and forth movement) within a compression chamber 4.
  • the compression chamber 4 belongs to the cylinder block (barrel) which is fixed relative to the casing 11.
  • the back and forth movement of the piston 3 is achieved by means of a connecting rod 10 which connects the swash plate 7 and the piston 3 by means of ball joints. This back and forth movement of the piston 3 within the compression chamber 4 makes it possible to pump the fluid.
  • the figure 5 represents, schematically and in a nonlimiting manner, a finger ball joint in three positions according to one embodiment of the invention, in order to illustrate the relative movements between the rotary plate and the drive shaft.
  • the turntable 2 is partially shown: only the central part of the turntable 2 is shown.
  • the finger ball 8 between the drive shaft 5 and the rotary plate 2 is formed by a ball joint between two spherical parts, and by a finger 12 which moves in a groove 13 formed in the rotary plate 2.
  • groove 13 is parallel to the axis of the drive shaft 5.
  • the adjustment of the position of the finger 12 in the groove 13 makes it possible to adjust the angle of inclination of the rotary plate 2 relative to the drive shaft 5.
  • the invention also relates to the use of the pump according to the invention for a drilling operation, in particular for the injection of drilling mud into a wellbore.
  • the pump according to the invention is well suited to this use, due to its flexibility, its compactness, and its resistance to high pressures.
  • the pump according to the invention can be sized to operate up to pressures of the order of 1500 bars, that is to say 150 MPa.
  • the pump according to the invention can be sized to operate at flow rates varying from 30 to 600 m 3 / h.
  • This example relates to a barrel pump according to the invention for which the drive shaft is linked to a prime mover by means of a gearbox with eight ratios.
  • This is a 2,500 HP (approximately 1,900 kW) barrel pump with five pistons.
  • Table 1 shows the rotational speed of the drive shaft as a function of the gearbox ratio: Table 1 Report 1 2 3 4 5 6 7 8 Speed (rpm) 198 269 300 365 407 485 555 660
  • This example shows in particular the impact of the angle of inclination of the plates on the pressure and the flow rate for a barrel pump according to the invention.
  • the figure 6 represents curves of the pressure P (in bars) as a function of the flow rate D (in m 3 / h) for a pump according to the invention for different gearbox ratios (indicated 1st, 2 nd , 3rd, ..., 8th) with a platen inclined 87 ° with respect to the axis of the drive shaft (i.e. with an angle of 3 ° with respect to a radial direction of the drive shaft) .
  • the figure 7 represents curves of the pressure as a function of the flow rate for a pump according to the invention (for the same pump as that used for the figure 6 ) for different gearbox ratios (indicated 1st, 2 nd , 3rd, ..., 8th) with a plate inclined by 70 ° with respect to the drive shaft (i.e. with an angle 20 ° relative to a radial direction of the drive shaft).
  • an angle of inclination of the plates (rotating and oscillating) close to 90 ° allows higher pressures than for an angle of inclination of the plates close to 70 °.
  • an inclination angle of the trays close to 70 ° allows higher flow rates than for an inclination angle of the trays close to 90 ° (thanks to the variable displacement). It is therefore possible to adapt the inclination of the plates according to the desired pumping conditions (pressures, flow rates). It is also noted, thanks to the different ratios of the gearbox, that the speed of rotation of the drive shaft influences the pressure and the flow of the fluid: the pressure is higher at low speed and the flow is higher. at high speed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Reciprocating Pumps (AREA)

Claims (9)

  1. Taumelscheibenpumpe, welche ein Gehäuse (11) umfasst und innerhalb des Gehäuses (11) umfasst:
    - eine Antriebswelle (5),
    - eine Drehscheibe (2), die von der Antriebswelle (5) angetrieben wird,
    - eine Taumelscheibe (7), die von der Drehscheibe (2) oszillierend angetrieben wird, und wobei die Taumelscheibe (7) in einer Schwenkverbindung entlang der Achse der Drehscheibe (2) in Bezug auf die Drehscheibe (2) steht,
    - einen Zylinderblock, der wenigstens zwei Kompressionskammern (4) aufweist, die in Umfangsrichtung verteilt sind, und
    - wenigstens zwei Kolben (3), die jeweils eine Translationsbewegung in den Kompressionskammern (4) des Zylinderblocks ausführen, wobei die Kolben (3) von der Taumelscheibe (7) mittels Schubstangen (10) angetrieben werden,
    dadurch gekennzeichnet, dass die Drehscheibe (2) von der Antriebswelle (5) mittels eines Kreuzgelenks (8) angetrieben wird, wobei die Position des Kreuzgelenks (8) die Neigung der Drehscheibe (2) und der Taumelscheibe (7) in Bezug auf die Antriebswelle (5) bestimmt.
  2. Pumpe nach Anspruch 1, wobei die Pumpe eine Rückzugstange (9) aufweist, wobei die Rückzugstange (9) in einer Kugelgelenkverbindung mit dem Gehäuse (11) und der Taumelscheibe (7) steht.
  3. Pumpe nach einem der vorhergehenden Ansprüche, wobei der Neigungswinkel der Drehscheibe (2) und der Taumelscheibe (7) in Bezug auf die Achse der Antriebswelle (5) zwischen 70° und 90° liegt.
  4. Pumpe nach einem der vorhergehenden Ansprüche, wobei die Drehscheibe (2) eine Aussparung (13) aufweist, in welcher sich der Finger (12) des Kreuzgelenks (8) bewegt, wobei die Aussparung (13) im Wesentlichen parallel zur Achse der Antriebswelle (5) ist.
  5. Pumpe nach einem der vorhergehenden Ansprüche, wobei die Pumpe (1) Mittel zur Steuerung der Neigung der Drehscheibe in Bezug auf die Antriebswelle (5) aufweist.
  6. Pumpe nach Anspruch 5, wobei die Energie der Mittel zur Steuerung von einer Quelle außerhalb der Pumpe (1) geliefert wird, insbesondere mittels eines Druckfluids.
  7. Pumpe nach Anspruch 5, wobei die Energie der Mittel zur Steuerung von der Antriebswelle (5) abgezapft wird.
  8. Pumpe nach einem der vorhergehenden Ansprüche, wobei der Zylinderblock in Bezug auf das Gehäuse (11) feststehend ist.
  9. Verwendung der Taumelscheibenpumpe (1) nach einem der vorhergehenden Ansprüche für einen Bohrvorgang, insbesondere für die Injektion von Bohrschlamm in ein Bohrloch.
EP18700369.4A 2017-01-25 2018-01-16 Taumelpumpe mit taumelscheibe Active EP3574214B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1750584A FR3062178B1 (fr) 2017-01-25 2017-01-25 Pompe a barillet avec plateau oscillant
PCT/EP2018/051013 WO2018137974A1 (fr) 2017-01-25 2018-01-16 Pompe a barillet avec plateau oscillant

Publications (2)

Publication Number Publication Date
EP3574214A1 EP3574214A1 (de) 2019-12-04
EP3574214B1 true EP3574214B1 (de) 2020-11-25

Family

ID=58669954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18700369.4A Active EP3574214B1 (de) 2017-01-25 2018-01-16 Taumelpumpe mit taumelscheibe

Country Status (6)

Country Link
US (1) US10900337B2 (de)
EP (1) EP3574214B1 (de)
CN (1) CN110226036B (de)
CA (1) CA3049492A1 (de)
FR (1) FR3062178B1 (de)
WO (1) WO2018137974A1 (de)

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JPH05126029A (ja) 1991-10-31 1993-05-21 Toyota Autom Loom Works Ltd 可変容量ピストンポンプ
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Also Published As

Publication number Publication date
CN110226036B (zh) 2021-08-31
WO2018137974A1 (fr) 2018-08-02
CN110226036A (zh) 2019-09-10
US10900337B2 (en) 2021-01-26
CA3049492A1 (fr) 2018-08-02
FR3062178A1 (fr) 2018-07-27
US20190360473A1 (en) 2019-11-28
EP3574214A1 (de) 2019-12-04
FR3062178B1 (fr) 2019-06-07

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