EP0344059A1 - Rotierende Zahnradvorrichtung zur Förderung einer Flüssigkeit - Google Patents

Rotierende Zahnradvorrichtung zur Förderung einer Flüssigkeit Download PDF

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Publication number
EP0344059A1
EP0344059A1 EP89401408A EP89401408A EP0344059A1 EP 0344059 A1 EP0344059 A1 EP 0344059A1 EP 89401408 A EP89401408 A EP 89401408A EP 89401408 A EP89401408 A EP 89401408A EP 0344059 A1 EP0344059 A1 EP 0344059A1
Authority
EP
European Patent Office
Prior art keywords
axis
gear
longitudinal elements
casing
crowns
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.)
Granted
Application number
EP89401408A
Other languages
English (en)
French (fr)
Other versions
EP0344059B1 (de
Inventor
Sylvain Janssen
Claude Fouinaud
Gérard Lagarde
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.)
Tokheim Services France SAS
Original Assignee
Schlumberger SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schlumberger SA filed Critical Schlumberger SA
Publication of EP0344059A1 publication Critical patent/EP0344059A1/de
Application granted granted Critical
Publication of EP0344059B1 publication Critical patent/EP0344059B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels

Definitions

  • the present invention relates to a rotating device with gears for the circulation of a liquid.
  • the invention relates to a rotating device of the gear type which can operate either as a pump for circulating a liquid, in particular a hydrocarbon, or as a flow meter for measuring a flow rate of liquid in circulation, in particular a hydrocarbon. .
  • Figure 1 shows such a pump. It comprises a pump body 10 provided with an intake pipe 12 and a discharge pipe 14 for the liquid.
  • An internal gear 16 is pivotally mounted in the pump body 10 around a first axis XX ′. Inside the gear 16 there is a gear 18, for example driving, with external teeth which is rotated about an axis YY ′ parallel to the axis XX ′.
  • the gear 18 partially meshes with the gear 16 due to its eccentricity.
  • a part 20, whose generatrices are parallel to the axes XX ′ and YY ′ separates over a part of their circumference, the gears 16 and 18.
  • the gear 16 has openings 22, corresponding to the tooth bottoms, which allow the liquid to pass from the suction to the internal zone to the gear 16 and from said internal zone to the discharge. Under the effect of the relative rotational movements of the gears 16 and 18, the liquid is sucked from the suction line 12 to the area internal to the gear 16 and then discharged from this internal area to the delivery line 14.
  • the principle of such pumps is well known, but their manufacture is delicate and expensive. In particular the manufacture of the external gear with internal teeth, which must allow the mounting of the internal gear with external teeth, is very expensive. In fact, it is impossible to produce this part in its entirety, which has the shape of a squirrel cage by molding or by sintering.
  • An object of the present invention is to provide a rotating gear device, in particular a gear pump of the aforementioned type, of which at least the external gear can be produced by molding or by sintering.
  • the rotating device for the circulation of liquid which comprises a casing provided with an inlet opening and an outlet opening, and in said casing a first rotating member provided with a rotation axis and an external toothing, and a second rotating member surrounding said first toothing and guided in rotation about a second axis parallel to the first, said second member having an internal toothing to cooperate with a portion of said external toothing and orifices to allow said liquid to penetrate into said second member, is characterized in that said second member consists of two circular rings mounted in said casing in two planes perpendicular to said first axis, and by a plurality of longitudinal elements mounted between said rings parallel to the axis X, X ′, having in cross section the shape of a gear tooth, said longitudinal elements not being integral with said crowns.
  • the pump comprises a body formed by a main casing 30 closed by a flange 32.
  • the casing 30 defines a cylindrical cavity 34 of axis XX ′. In the cavity 34 open a suction line 36 visible in Figure 2 and a discharge line not shown.
  • the wall 38 of the casing 30 perpendicular to the axis XX ′ has a bearing - stop 40 whose axis YY ′ is offset with respect to the axis XX ′ as shown in FIG. 2.
  • the flange 32 the periphery of which 42 can be fixed by any suitable means to the edge 44 casing 30 defines a bearing 46 whose axis coincides with the axis YY ′ when the flange 32 is mounted on the casing 30.
  • the flange 32 has on its internal face an extension 48 which defines the half-moon shaped part 20 of the Figure 1.
  • the outer face 50 of the extension 48 is a portion of cylinder of revolution with axis XX ′ while its inner face 52 is a portion of cylinder of revolution with axis YY ′.
  • the cavity 34 has a generally cylindrical shape limited by the side wall 39 and by two end walls 38 and 41 (flange 32)
  • the external gear referenced 100 comprises two circular end rings 102 and 104 and a plurality of longitudinal elements 106, all identical, which are arranged along the axis XX ′ of the external gear 100.
  • Each ring 102 or 104 has on its periphery notches 108 in number equal to the name of the longitudinal elements 106.
  • the notches 108 have a depth less than the thickness of the crown 102 or 104 so that the residual thickness serves as an axial stop in the direction XX ′
  • the notches 108 are machined to receive the ends of the longitudinal elements 106 with a slight clearance as shown in Figures 3a and 3b.
  • the longitudinal elements have, in cross section, the shape of a gear tooth.
  • the pump also includes an internal gear 80.
  • the gear 80 comprises a shaft 82 to which a pinion 84 with external teeth is fixed.
  • the pinion 84 has for example seven teeth which are cut to be able to mesh with the teeth of the external gear formed by the longitudinal elements 106.
  • the shaft 82 comprises a first end 86 which forms a bearing for the bearing 40 of the pump body and , on the other side of the pinion 82, a bearing 88 for the bearing 46 of the flange 32 and an end 90 for fixing to a drive member.
  • the structure of the external gear 100 is exactly reconstructed.
  • the longitudinal elements 106 are held axially by the rings circular 102 and 104 arranged in planes perpendicular to the axis XX ′ and they are held radially by the cylindrical side wall of this same cavity 36.
  • the rings 102 and 104 are held in place by the side wall 39 and by the end walls 38 and 41 of the cavity 36.
  • the assembly has a slight clearance to absorb the effects of differential thermal expansion.
  • the various parts forming the external gear 100 can easily be produced by molding or by sintering (sintered steel).
  • the longitudinal elements 106 can be advantageously cut from a Delrin rod having a suitable cross section.
  • the longitudinal elements 106 and the notches 108 are limited by portions of cylindrical surfaces of revolution about the same axis, these axes being parallel to the axis X, X ′.
  • each longitudinal element guided by the two notches 108 has a reduced possibility of pivoting about its axis when it meshes with a tooth of the internal gear.
  • the notches 108 formed in the crowns 102 and 104 can be the entire thickness of these.
  • the longitudinal elements 106 are held longitudinally by the internal walls of the casing and of the flange perpendicular to the axis XX ′.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP89401408A 1988-05-25 1989-05-24 Rotierende Zahnradvorrichtung zur Förderung einer Flüssigkeit Expired - Lifetime EP0344059B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8806920A FR2632020B1 (fr) 1988-05-25 1988-05-25 Dispositif tournant a engrenages pour la circulation d'un liquide
FR8806920 1988-05-25

Publications (2)

Publication Number Publication Date
EP0344059A1 true EP0344059A1 (de) 1989-11-29
EP0344059B1 EP0344059B1 (de) 1991-07-31

Family

ID=9366578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401408A Expired - Lifetime EP0344059B1 (de) 1988-05-25 1989-05-24 Rotierende Zahnradvorrichtung zur Förderung einer Flüssigkeit

Country Status (5)

Country Link
US (1) US4958996A (de)
EP (1) EP0344059B1 (de)
DE (1) DE68900174D1 (de)
ES (1) ES2025849T3 (de)
FR (1) FR2632020B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130071280A1 (en) * 2011-06-27 2013-03-21 James Brent Klassen Slurry Pump
CA2907702C (en) 2013-03-21 2022-03-15 James Klassen Slurry pump
US11067076B2 (en) 2015-09-21 2021-07-20 Genesis Advanced Technology Inc. Fluid transfer device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB270000A (en) * 1926-02-02 1927-05-02 Stone J & Co Ltd Improvements in rotary engines, pumps, blowers, compressors, meters and the like
US2621603A (en) * 1948-08-31 1952-12-16 Julian B Thomas Rotary pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE325849C (de) * 1917-03-03 1920-09-21 Emil Ludwig Zahnradpumpe, bei welcher ein Stirnrad mit einem innen verzahnten Hohlrad zusammenarbeitet
US1496737A (en) * 1922-06-03 1924-06-03 Viking Pump Company Rotary pump, motor, or engine
US2672824A (en) * 1944-05-11 1954-03-23 Gerotor May Corp Hydraulic pump or motor
US2601397A (en) * 1950-04-11 1952-06-24 Hill Myron Francis Rotary fluid displacement device
US2615399A (en) * 1950-09-09 1952-10-28 Peerless Machinery Co Rotary pump
US3233524A (en) * 1962-09-05 1966-02-08 Germane Corp Fluid operated motor
US3276288A (en) * 1963-12-20 1966-10-04 Fry Jeremy Joseph Housing for valve actuator or the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB270000A (en) * 1926-02-02 1927-05-02 Stone J & Co Ltd Improvements in rotary engines, pumps, blowers, compressors, meters and the like
US2621603A (en) * 1948-08-31 1952-12-16 Julian B Thomas Rotary pump

Also Published As

Publication number Publication date
ES2025849T3 (es) 1992-04-01
FR2632020A1 (fr) 1989-12-01
EP0344059B1 (de) 1991-07-31
DE68900174D1 (de) 1991-09-05
US4958996A (en) 1990-09-25
FR2632020B1 (fr) 1994-02-11

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