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EP1041280B1 - Deep well pump - Google Patents

Deep well pump Download PDF

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Publication number
EP1041280B1
EP1041280B1 EP00400831A EP00400831A EP1041280B1 EP 1041280 B1 EP1041280 B1 EP 1041280B1 EP 00400831 A EP00400831 A EP 00400831A EP 00400831 A EP00400831 A EP 00400831A EP 1041280 B1 EP1041280 B1 EP 1041280B1
Authority
EP
European Patent Office
Prior art keywords
rod
pump according
pump
symmetrical
toothed wheels
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.)
Expired - Lifetime
Application number
EP00400831A
Other languages
German (de)
French (fr)
Other versions
EP1041280A1 (en
Inventor
Salah Djelouah
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.)
Sorelec
Original Assignee
Sorelec
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
Priority claimed from FR9904019A external-priority patent/FR2791736A1/en
Application filed by Sorelec filed Critical Sorelec
Publication of EP1041280A1 publication Critical patent/EP1041280A1/en
Application granted granted Critical
Publication of EP1041280B1 publication Critical patent/EP1041280B1/en
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
    • 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
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/006—Crankshafts
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/025—Driving of pistons coacting within one cylinder
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • 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
    • Y10T74/18176—Crank, pitman, lever, and slide
    • 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
    • Y10T74/18208—Crank, pitman, and slide

Definitions

  • the present invention relates to a pump dewatering to draw water from an underground aquifer, pump comprising a tube connecting the surface to the water table to pump, a rod carrying the pistons, connected to a mechanism of training installed on the surface to communicate to the rod a movement back and forth pumping.
  • pump comprising a tube connecting the surface to the water table to pump, a rod carrying the pistons, connected to a mechanism of training installed on the surface to communicate to the rod a movement back and forth pumping.
  • Such pumps are known from, for example, US-A-1,604,734.
  • the present invention aims to remedy some of the disadvantages of the known pumps of dewatering, and proposes to provide a means of training and guidance as simple as possible, little subject to wear even in very difficult operating conditions as in a atmosphere charged with sand or dust, and allowing a very regular and smooth training of the rod of pumping.
  • the symmetrical arrangement of the means of training in a symmetry with respect to the axis of the rod ensures the guiding of the pump rod in the plan of symmetry and maintain the pump head necessarily in this plane of symmetry.
  • the training device is extremely simple and once settled, it can no longer be disrupted, at least for the geometry of the trajectory of the rod.
  • the stroke of the stem is adjusted according to the arm lever the fulcrum of one end of each connecting rod relative to the center of rotation of the gears.
  • Such a pump can be driven by a crank, hand-held, or by an engine, especially an electric motor powered by a solar cell or by a group generator in the case of an electric motor.
  • connection with the drive member is a strap or a chain.
  • Such a machine used as a pump Driven by a motor can also work as an engine fed with fluid under pressure.
  • the invention relates to a dewatering pump comprising a tube 1, provided with a spout exit 2 to discharge the pumped water into an underground aquifer.
  • This dewatering tube 1 receives a rod 3 carrying pistons not shown.
  • Rod 3 makes a movement of and comes (double arrow A) to go down into the water table and goes up, step by step, a certain amount of water that will be poured through spout 2 into a container 4.
  • This rod 3 is driven by a mechanism housed in a housing 5 mounted on a foot 6.
  • the housing 5 houses two identical toothed wheels 7, 8, and rotatably mounted on symmetrical positions with respect to the ZZ direction of the trajectory of the rod 3.
  • the two toothed wheels 7, 8 meshing with each other so as to turn in a direction of opposite rotation.
  • the rotation of the two toothed wheels 7, 8 is ensured by a motor unit consisting either of a crank wheel 9 (FIG 1) or by a motor 10 connected to one of the wheels by a belt 11 (Fig. 2).
  • Two identical rods 12, 13 connect the head of the rod 3, by joints carried by a piece of link 14, at points of articulation carried by the wheels 7, 8. These articulation points 71, 81 occupy symmetrical positions with respect to the ZZ direction of the trajectory of the rod 3 when the wheels 7, 8 are engaged.
  • the rods 12, 13 are driven by the wheels 7, 8, following a symmetrical movement with respect to the direction ZZ. This movement translates into a translation movement back and forth from the stem 3, that is to say a movement pumping.
  • Figure 1 shows the variant of the pump with a crank wheel 9 and Figure 2 the variant with an engine 10 and a belt 11. In both cases, there is a steering wheel inertia 15 to stabilize the rotational movement. This steering wheel does not appear in Figure 1.
  • this is the steering wheel inertia 15 carried by the wheel 7 or by the axis integral with the wheel.
  • the head of the rod 3 is hooked to the two connecting rods 12, 13 which act in tension, the antagonistic effort being the weight rod 3, pistons and pumped water.
  • Figure 3 shows an alternative embodiment in which the toothed wheels 7A, 8A mesh as before and are identical, mounted symmetrically on two axes 72A, 82A symmetrical with respect to the passing ZZ plane by the stem 3A of the dewatering pump whose tube carries the reference 1A.
  • This figure shows the connecting piece 14A to which are articulated heads 121A, 131A connecting rods 12A, 13A and the head 31A of the rod 3A.
  • the rods 12A, 13A do not pull the rod 3A but push it, the wheels 7A, 8A and the connecting rods 12A, 13A being placed below the 14A head carried by the connecting rod 3A.
  • This training is done also by a motor 10A transmitting its movement by a belt or chain 11A passing on a pulley 12A just sketched.
  • the articulation points 71A, 81A of the connecting rods 12A, 13A are adjustable in the radial direction of the wheels 7A, 8A, which makes it possible to modify the length of the induced race in the head 14A and consequently in the rod 3A.
  • the drive mechanism of the stem 3B of the dewatering tube 1B consists of two toothed wheels identical 7B, 8B mounted on symmetrical axes 72B, 82B with respect to the trajectory ZZ of the rod 3B. These two toothed wheels 7B, 8B mesh to rotate in opposite directions.
  • the means of training such as the crank carried by a steering wheel associated with one of the gear wheels or a motor with a transmission chain or belt, are not represented.
  • the mechanism comprises transmission means symmetrical to the rod 3B.
  • the transmission of movement is done by two connecting rods 12B, 13B, articulated in 71B and 81B in symmetrical positions to the gears 7B, 8B.
  • These rods 12B, 13B are connected by an articulation not referenced, each with a lever 14B, 15B mounted around it a respective pivot 16B, 17B.
  • the other end of levers 14B, 15B is articulately connected by a rod 18B, 19B to the rod 3B.
  • rods 18B, 19B are necessary for compensate for the circular motion of the ends of the levers 14B, 15B bearing the joint.
  • the movement back and forth of the rod 3B is shown by a double arrow.
  • the third variant of the invention for the mechanism driving the rod 3C in the dewatering tube 1C, consists of two toothed wheels 7C, 8C, identical and mounted on symmetrical axes 72C, 82C with respect to the plane ZZ moving the rod 3C. These gear wheels, identical mesh to turn in opposite direction. These gear wheels are driven by a means of training such as a crank carried by a steering wheel or motor with a connection by chain belt, not shown.
  • the transmission of the movement towards the rod 3C made by means symmetrical with respect to the plane ZZ.
  • These means consist of a connecting rod 12C, 13C connected to the rod 3C by connecting rods 18C, 19C or by a connecting piece such as parts 14, 14A described above.
  • Connecting rods 12C, 13C are connected to the gears 7C, 8C by levers 14C, 15C whose end is articulated to the corresponding end each connecting rod 12C, 13C and whose other end is connected via a slide 141C, 151C to a pivot 71C, 81C integral with each of the toothed wheels 7C, 8C.
  • Pivots 71C, 81C are carried in fixed positions and symmetrical on the two gears.
  • pivots 71C, 81C constitute relatively sliding rollers in the slides 141C, 151C when the toothed wheels 7C, 8C rotate to induce alternate pivoting motion in the levers 14C, 15C.
  • These levers rotate themselves on pivots 142C, 152C.
  • the up and down movement of the stem 3C is schematized by a double arrow.
  • FIG. 6 a fourth embodiment of the invention will be described below. Common areas with the embodiment of the preceding figures will bear the same references supplemented by the letter D and their detailed description will not be repeated.
  • the piece 14D to which are connected the rods 12D, 13D driven by example via the belt 11D from the 10D motor, is attached to two sets of connecting rods and lever, symmetrical.
  • This transmission assembly connecting the plate 14D to the 3D rod is composed in the left part of the figure, a 30D linkage articulated to the 14D plate and a lever cranked first type with two arms 31D, 34D mounted around a fixed pivot 33D.
  • the arm 31D passing through the pivot 33D is connected to the bracket, the arm 31D beyond the pivot 33D.
  • the arm 31D is articulated to the connecting rod 30D by through the 32D joint and the 34D arm is connected to a connecting rod 36D via a joint 35D.
  • the connecting rod 36D is connected by the articulation 37D to the 3D stem.
  • this part is composed of a first link 40D connected to the plate 14D and by a 42D joint to a lever of the first kind with two arms 41D, 44D whose first arm 41D passes through the pivot 43D.
  • the second arm 44D is connected by a hinge 45D to a connecting rod 46D itself articulated by the articulation 47D to the 3D stem.
  • connecting rods and lever symmetrical, move as indicated by the movements of the joints 32D, 35D; 42D, 45D according to the double arrows.
  • This reduction mechanism makes it possible to adjust the rise and fall of the 3D rod according to the power provided by the 10D engine and data from installation and in particular flow.
  • the fifth embodiment variant of the invention also includes common parts with previous achievements.
  • the same references will be used together with the suffix E.
  • the plate 14E is connected to the 3E rod also by two sets of lever and connecting rods, symmetrical with respect to the ZZ axis.
  • the set on the left is consists of a connecting rod 50E articulated to the plate 14E and connected (51E) to a link 52E itself hinged (53E) to a lever with two arms 54E, 56E, whose first arm 54E is mounted on the pivot 55E, the second arm 56E being perpendicular to the extending the first arm 56E beyond the pivot 55E.
  • the second arm is connected by a 57E hinge to a 58E rod itself connected to the rod 3E by a joint 59E.
  • the other set of connecting rods and lever, symmetrical consists of a 60E connecting rod connected by a joint 61E to a link 62E, itself connected by an articulation 63E to a 64E arm of a two-armed lever 64E, 66E.
  • the first arm is pivotally mounted on the pivot 65E and the second arm 66E is connected by the articulation 67E to a connecting rod 68E itself connected by a hinge 69E to the rod 3E.
  • This connecting rod mechanism and link also allows great flexibility in adjusting the strokes and the operation of the pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Transmission Devices (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Fluid-Driven Valves (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Cookers (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

Draw pump has tube (1) connecting surface to water layer to be pumped. Rod (3) carrying pistons is connected to driving mechanism installed on surface giving rod to and fro pumping movement. Mechanism has two identical meshing toothed wheels (7,8) mounted on symmetrical axes relative to trajectory (ZZ) of rod. Motor (10) and belt (11) connected to wheel rotates it. Two identical connecting rods (12,13) are connected to head (14) of rod and to articulation point carried by toothed wheel as to be driven in symmetrical movements relative to rod trajectory and guide, and drive rod and its pistons.

Description

La présente invention concerne une pompe d'exhaure pour puiser de l'eau dans une nappe souterraine, pompe comprenant un tube reliant la surface à la nappe d'eau à pomper, une tige portant les pistons, reliée à un mécanisme d'entraínement installé en surface pour communiquer à la tige un mouvement de va et vient de pompage. De telles pompes sont connues par example de US-A-1 604 734.The present invention relates to a pump dewatering to draw water from an underground aquifer, pump comprising a tube connecting the surface to the water table to pump, a rod carrying the pistons, connected to a mechanism of training installed on the surface to communicate to the rod a movement back and forth pumping. Such pumps are known from, for example, US-A-1,604,734.

En général, de telles pompes sont destinées à être installées dans des endroits bénéficiant de peu d'assistance technique, aussi doivent-elles être aussi simples et solides que possible. Or, l'une des grandes difficultés de l'entraínement des pompes d'exhaure est le guidage de la tige portant les pistons. Ce guidage doit être aussi centré que possible par rapport au tube d'exhaure pour réduire au minimum le frottement et faciliter ainsi le fonctionnement de la pompe tout en diminuant l'usure.In general, such pumps are intended for to be installed in places with little technical assistance, should they be so simple and solid as possible. One of the great difficulties of the driving of the pumps of dewatering is the guiding of the rod carrying the pistons. This guidance must also be centered as possible compared to the dewatering tube to reduce at least friction and thus facilitate operation pump while reducing wear.

Dans ce type de pompe il faut également réduire à leur plus simple expression les moyens de guidage nécessaires à la tige car ces moyens de guidage, du moins ceux qui sont à l'extérieur, proches de la source motrice, sont exposés aux poussières, sable, etc. qui réduisent, voire détériorent les caractéristiques de guidage. Cela se traduit à son tour sur le bon fonctionnement de l'installation et sa fiabilité.In this type of pump it is also necessary to reduce their simplest expression the necessary guidance means to the stem because these guide means, at least those that are at outside, close to the motor source, are exposed to dust, sand, etc. which reduce or even guiding characteristics. This in turn translates into the proper functioning of the installation and its reliability.

La présente invention a pour but de remédier à certains des inconvénients des pompes d'exhaure, connues, et se propose de réaliser un moyen d'entraínement et de guidage aussi simple que possible, peu sujet à l'usure même dans des conditions de fonctionnement très difficiles comme dans une atmosphère chargée de sable ou de poussières, et permettant un entraínement très régulier et sans à coup de la tige de pompage.The present invention aims to remedy some of the disadvantages of the known pumps of dewatering, and proposes to provide a means of training and guidance as simple as possible, little subject to wear even in very difficult operating conditions as in a atmosphere charged with sand or dust, and allowing a very regular and smooth training of the rod of pumping.

A cet effet l'invention concerne une pompe d'exhaure du type défini ci-dessus, caractérisée en ce que le mécanisme comprend :

  • deux roues dentées identiques,
    • montées sur des axes symétriques par rapport à la trajectoire de la tige portant les pistons,
    • engrenant l'une dans l'autre pour tourner en sens opposé,
  • un organe moteur relié à au moins l'une des roues pour l'entraíner en rotation,
  • deux bielles identiques reliées chacune à la tête de la tige et à un point d'articulation porté par chaque roue dentée, dans des positions symétriques, pour être entraínées suivant des mouvements symétriques par rapport à la trajectoire de la tige pour guider et entraíner la tige et ses pistons.
For this purpose, the invention relates to a dewatering pump of the type defined above, characterized in that the mechanism comprises:
  • two identical gear wheels,
    • mounted on symmetrical axes relative to the trajectory of the rod carrying the pistons,
    • meshing with each other to turn in the opposite direction,
  • a driving member connected to at least one of the wheels to cause it to rotate,
  • two identical connecting rods each connected to the head of the rod and to a point of articulation carried by each toothed wheel, in symmetrical positions, to be driven according to symmetrical movements relative to the trajectory of the rod to guide and drive the rod and his pistons.

La disposition symétrique des moyens d'entraínement selon une symétrie par rapport à l'axe de la tige permet d'assurer le guidage de la tige de pompe dans le plan de symétrie et de maintenir la tête de la pompe nécessairement dans ce plan de symétrie.The symmetrical arrangement of the means of training in a symmetry with respect to the axis of the rod ensures the guiding of the pump rod in the plan of symmetry and maintain the pump head necessarily in this plane of symmetry.

Le dispositif d'entraínement est extrêmement simple et une fois réglé, il ne peut plus se dérégler, du moins pour la géométrie de la trajectoire de la tige.The training device is extremely simple and once settled, it can no longer be disrupted, at least for the geometry of the trajectory of the rod.

De plus, grâce à la simplicité des moyens mis en oeuvre, le rendement mécanique est très élevé car les frottements sont réduits au minimum.Moreover, thanks to the simplicity of the means the mechanical efficiency is very high because the friction are reduced to a minimum.

La course de la tige se règle en fonction du bras de levier du point d'articulation d'une extrémité de chaque bielle par rapport au centre de rotation des roues dentées.The stroke of the stem is adjusted according to the arm lever the fulcrum of one end of each connecting rod relative to the center of rotation of the gears.

Une telle pompe peut être entraínée par une manivelle, à main, ou par un moteur, notamment un moteur électrique alimenté par une pile solaire ou encore par un groupe électrogène dans le cas d'un moteur électrique.Such a pump can be driven by a crank, hand-held, or by an engine, especially an electric motor powered by a solar cell or by a group generator in the case of an electric motor.

Suivant d'autres caractéristiques avantageuses de l'invention :

  • l'une des roues dentées comporte ou constitue le volant d'inertie,
  • la pièce de liaison entre les deux têtes de bielles et la tête de la tige reçoit les articulations de la tête de tige et les deux articulations ou points de fixation des deux bielles,
  • les bielles peuvent fonctionner en traction ou en poussée.
According to other advantageous features of the invention:
  • one of the gears comprises or constitutes the flywheel,
  • the connecting piece between the two connecting rods and the head of the rod receives the joints of the rod head and the two joints or points of attachment of the two rods,
  • the rods can operate in traction or thrust.

Enfin, la liaison avec l'organe d'entraínement est une courroie ou une chaíne. Finally, the connection with the drive member is a strap or a chain.

Suivant d'autres caractéristiques avantageuses de l'invention :

  • les bielles sont reliées à la tige par l'intermédiaire de leviers montés pivotants sur des pivots,
  • les bielles sont reliées aux roues dentées par l'intermédiaire de leviers montés sur des pivots coopérant avec les roues dentées par une liaison à galets et coulisses, les coulisses étant prévues dans les leviers et les galets en forme de pivots portés par les roues dentées.
According to other advantageous features of the invention:
  • the rods are connected to the rod by means of levers pivotally mounted on pivots,
  • the rods are connected to the gears by means of levers mounted on pivots cooperating with the gears by a link with rollers and slides, the slides being provided in the levers and pivots-shaped rollers carried by the gears.

Enfin, une telle machine, utilisée comme pompe entraínée par un moteur peut également fonctionner comme moteur alimenté en fluide sous pression.Finally, such a machine, used as a pump Driven by a motor can also work as an engine fed with fluid under pressure.

La présente invention sera décrite ci-après de manière plus détaillée à l'aide des dessins annexés dans lesquels :

  • la figure 1 est une vue de côté de la pompe d'exhaure selon l'invention, la tige avec les pistons et le tube d'exhaure n'étant représentés que partiellement,
  • la figure 2 est une vue de face de la pompe de la figure 1,
  • la figure 3 est une vue schématique d'un mode de réalisation d'un mécanisme d'entraínement de la tige d'une pompe d'exhaure.
  • la figure 4 est une vue schématique d'une seconde variante de l'invention,
  • la figure 5 est une vue schématique d'une troisième variante de mécanisme selon l'invention,
  • la figure 6 montre une quatrième variante de réalisation de l'invention,
  • la figure 7 montre une cinquième variante de réalisation de l'invention.
The present invention will be described hereinafter in more detail with the aid of the accompanying drawings in which:
  • Figure 1 is a side view of the dewatering pump according to the invention, the rod with the pistons and the dewatering tube being represented only partially,
  • FIG. 2 is a front view of the pump of FIG. 1,
  • Figure 3 is a schematic view of an embodiment of a drive mechanism of the rod of a dewatering pump.
  • FIG. 4 is a schematic view of a second variant of the invention,
  • FIG. 5 is a schematic view of a third variant of mechanism according to the invention,
  • FIG. 6 shows a fourth variant embodiment of the invention,
  • Figure 7 shows a fifth embodiment of the invention.

Selon les figures 1 et 2, l'invention concerne une pompe d'exhaure comprenant un tube 1, muni d'un bec de sortie 2 pour débiter l'eau pompée dans une nappe souterraine. Ce tube d'exhaure 1 reçoit une tige 3 portant des pistons non représentés. La tige 3 effectue un mouvement de va et vient (double flèche A) pour descendre dans la nappe d'eau et fait remonter, par palier, une certaine quantité d'eau qui sera déversée par le bec 2 dans un récipient 4.According to FIGS. 1 and 2, the invention relates to a dewatering pump comprising a tube 1, provided with a spout exit 2 to discharge the pumped water into an underground aquifer. This dewatering tube 1 receives a rod 3 carrying pistons not shown. Rod 3 makes a movement of and comes (double arrow A) to go down into the water table and goes up, step by step, a certain amount of water that will be poured through spout 2 into a container 4.

Cette tige 3 est entraínée par un mécanisme logé dans un boítier 5 monté sur un pied 6. Le boítier 5 loge deux roues dentées 7, 8 identiques, et montées à rotation sur des positions symétriques par rapport à la direction ZZ de la trajectoire de la tige 3. Les deux roues dentées 7, 8 engrènent l'une avec l'autre de façon à tourner dans un sens de rotation opposé.This rod 3 is driven by a mechanism housed in a housing 5 mounted on a foot 6. The housing 5 houses two identical toothed wheels 7, 8, and rotatably mounted on symmetrical positions with respect to the ZZ direction of the trajectory of the rod 3. The two toothed wheels 7, 8 meshing with each other so as to turn in a direction of opposite rotation.

La rotation des deux roues dentées 7, 8 est assurée par un organe moteur constitué soit par un volant à manivelle 9 (fig. 1) soit par un moteur 10 relié à l'une des roues par une courroie 11 (fig. 2).The rotation of the two toothed wheels 7, 8 is ensured by a motor unit consisting either of a crank wheel 9 (FIG 1) or by a motor 10 connected to one of the wheels by a belt 11 (Fig. 2).

Deux bielles identiques 12, 13 relient la tête de la tige 3, par des articulations portées par une pièce de liaison 14, à des points d'articulation portés par les roues dentées 7, 8. Ces points d'articulation 71, 81 occupent des positions symétriques par rapport à la direction ZZ de la trajectoire de la tige 3 lorsque les roues 7, 8 sont engrenées.Two identical rods 12, 13 connect the head of the rod 3, by joints carried by a piece of link 14, at points of articulation carried by the wheels 7, 8. These articulation points 71, 81 occupy symmetrical positions with respect to the ZZ direction of the trajectory of the rod 3 when the wheels 7, 8 are engaged.

Les bielles 12, 13 sont entraínées par les roues 7, 8, suivant un mouvement symétrique par rapport à la direction ZZ. Ce mouvement se traduit par un mouvement de translation en va et vient de la tige 3, c'est-à-dire un mouvement de pompage.The rods 12, 13 are driven by the wheels 7, 8, following a symmetrical movement with respect to the direction ZZ. This movement translates into a translation movement back and forth from the stem 3, that is to say a movement pumping.

La figure 1 montre la variante de la pompe avec une roue à manivelle 9 et la figure 2 la variante avec un moteur 10 et une courroie 11. Dans les deux cas, il y a un volant d'inertie 15 pour stabiliser le mouvement de rotation. Ce volant n'apparaít pas dans la figure 1.Figure 1 shows the variant of the pump with a crank wheel 9 and Figure 2 the variant with an engine 10 and a belt 11. In both cases, there is a steering wheel inertia 15 to stabilize the rotational movement. This steering wheel does not appear in Figure 1.

Dans le cas de la figure 2, il s'agit du volant d'inertie 15 porté par la roue 7 ou par l'axe solidaire de la roue.In the case of Figure 2, this is the steering wheel inertia 15 carried by the wheel 7 or by the axis integral with the wheel.

Dans les modes de réalisation des figures 1 et 2, la tête de la tige 3 est accrochée aux deux bielles 12, 13 qui agissent en traction, l'effort antagoniste étant le poids de la tige 3, des pistons et de l'eau pompée. In the embodiments of Figures 1 and 2, the head of the rod 3 is hooked to the two connecting rods 12, 13 which act in tension, the antagonistic effort being the weight rod 3, pistons and pumped water.

La figure 3 montre une variante de réalisation dans laquelle les roues dentées 7A, 8A engrènent comme précédemment et sont identiques, montées de manière symétrique sur deux axes 72A, 82A symétriques par rapport au plan ZZ passant par la tige 3A de la pompe d'exhaure dont le tube porte la référence 1A.Figure 3 shows an alternative embodiment in which the toothed wheels 7A, 8A mesh as before and are identical, mounted symmetrically on two axes 72A, 82A symmetrical with respect to the passing ZZ plane by the stem 3A of the dewatering pump whose tube carries the reference 1A.

Cette figure montre la pièce de liaison 14A à laquelle sont articulées les têtes 121A, 131A des bielles 12A, 13A et la tête 31A de la tige 3A.This figure shows the connecting piece 14A to which are articulated heads 121A, 131A connecting rods 12A, 13A and the head 31A of the rod 3A.

Dans la variante de la figure 3, les bielles 12A, 13A ne tirent pas la tige 3A mais la poussent, les roues 7A, 8A et les bielles 12A, 13A étant placées en dessous de la tête 14A portée par la bielle 3A. Cet entraínement se fait également par un moteur 10A transmettant son mouvement par une courroie ou une chaíne 11A passant sur une poulie 12A simplement esquissée.In the variant of Figure 3, the rods 12A, 13A do not pull the rod 3A but push it, the wheels 7A, 8A and the connecting rods 12A, 13A being placed below the 14A head carried by the connecting rod 3A. This training is done also by a motor 10A transmitting its movement by a belt or chain 11A passing on a pulley 12A just sketched.

Les points d'articulation 71A, 81A des bielles 12A, 13A sont réglables dans la direction radiale des roues dentées 7A, 8A, ce qui permet de modifier la longueur de la course induite dans la tête 14A et par suite dans la tige 3A.The articulation points 71A, 81A of the connecting rods 12A, 13A are adjustable in the radial direction of the wheels 7A, 8A, which makes it possible to modify the length of the induced race in the head 14A and consequently in the rod 3A.

Selon la figure 4, le mécanisme d'entraínement de la tige 3B du tube d'exhaure 1B se compose de deux roues dentées identiques 7B, 8B montées sur des axes symétriques 72B, 82B par rapport à la trajectoire ZZ de la tige 3B. Ces deux roues dentées 7B, 8B engrènent pour tourner en sens opposé. Le moyen d'entraínement tel que la manivelle portée par un volant associé à l'une des roues dentées ou un moteur avec une transmission par chaíne ou courroie, ne sont pas représentés.According to Figure 4, the drive mechanism of the stem 3B of the dewatering tube 1B consists of two toothed wheels identical 7B, 8B mounted on symmetrical axes 72B, 82B with respect to the trajectory ZZ of the rod 3B. These two toothed wheels 7B, 8B mesh to rotate in opposite directions. The means of training such as the crank carried by a steering wheel associated with one of the gear wheels or a motor with a transmission chain or belt, are not represented.

Le mécanisme comprend des moyens de transmission symétriques jusqu'à la tige 3B. Ainsi, la transmission du mouvement se fait par deux bielles 12B, 13B, articulées en 71B et 81B dans des positions symétriques aux roues dentées 7B, 8B. Ces bielles 12B, 13B sont reliées par une articulation non référencée, chacune à un levier 14B, 15B monté autour d'un pivot respectif 16B, 17B. L'autre extrémité des leviers 14B, 15B est reliée de manière articulée par une biellette 18B, 19B à la tige 3B. The mechanism comprises transmission means symmetrical to the rod 3B. Thus, the transmission of movement is done by two connecting rods 12B, 13B, articulated in 71B and 81B in symmetrical positions to the gears 7B, 8B. These rods 12B, 13B are connected by an articulation not referenced, each with a lever 14B, 15B mounted around it a respective pivot 16B, 17B. The other end of levers 14B, 15B is articulately connected by a rod 18B, 19B to the rod 3B.

Ces biellettes 18B, 19B sont nécessaires pour compenser le mouvement circulaire de l'extrémité des leviers 14B, 15B portant l'articulation. On pourrait également remplacer les biellettes 18B, 19B par une pièce de liaison comme les pièces de liaison 14, 14A ci-dessus, dans lesquelles il y aurait des coulisses pour l'articulation des extrémités des leviers 14B, 15B.These rods 18B, 19B are necessary for compensate for the circular motion of the ends of the levers 14B, 15B bearing the joint. We could also replace the rods 18B, 19B by a connecting piece as the connecting pieces 14, 14A above, in which there is would have some slides for the articulation of the ends of the levers 14B, 15B.

Le mouvement de va et vient de la tige 3B est représenté par une double flèche.The movement back and forth of the rod 3B is shown by a double arrow.

La troisième variante de l'invention, pour le mécanisme d'entraínement de la tige 3C dans le tube d'exhaure 1C, se compose de deux roues dentées 7C, 8C, identiques et montées sur des axes symétriques 72C, 82C par rapport au plan ZZ de déplacement de la tige 3C. Ces roues dentées, identiques engrènent pour tourner en sens opposé. Ces roues dentées sont entraínées par un moyen d'entraínement tel qu'une manivelle portée par un volant ou un moteur avec une liaison par courroie à chaíne, non représentés.The third variant of the invention, for the mechanism driving the rod 3C in the dewatering tube 1C, consists of two toothed wheels 7C, 8C, identical and mounted on symmetrical axes 72C, 82C with respect to the plane ZZ moving the rod 3C. These gear wheels, identical mesh to turn in opposite direction. These gear wheels are driven by a means of training such as a crank carried by a steering wheel or motor with a connection by chain belt, not shown.

La transmission du mouvement vers la tige 3C se fait par des moyens symétriques par rapport au plan ZZ. Ces moyens se composent d'une bielle 12C, 13C reliée à la tige 3C par des biellettes 18C, 19C ou par une pièce de liaison comme les pièces 14, 14A décrites ci-dessus. Les bielles 12C, 13C sont reliées aux roues dentées 7C, 8C par des leviers 14C, 15C dont une extrémité est articulée à l'extrémité correspondante de chaque bielle 12C, 13C et dont l'autre extrémité est reliée par l'intermédiaire d'une coulisse 141C, 151C à un pivot 71C, 81C solidaire de chacune des roues dentées 7C, 8C. Les pivots 71C, 81C sont portés dans des positions fixes et symétriques sur les deux roues dentées. Ces pivots 71C, 81C constituent des galets coulissant de manière relative dans les coulisses 141C, 151C lorsque les roues dentées 7C, 8C tournent pour induire un mouvement de pivotement alternatif dans les leviers 14C, 15C. Ces leviers pivotent eux-mêmes sur des pivots 142C, 152C.The transmission of the movement towards the rod 3C made by means symmetrical with respect to the plane ZZ. These means consist of a connecting rod 12C, 13C connected to the rod 3C by connecting rods 18C, 19C or by a connecting piece such as parts 14, 14A described above. Connecting rods 12C, 13C are connected to the gears 7C, 8C by levers 14C, 15C whose end is articulated to the corresponding end each connecting rod 12C, 13C and whose other end is connected via a slide 141C, 151C to a pivot 71C, 81C integral with each of the toothed wheels 7C, 8C. Pivots 71C, 81C are carried in fixed positions and symmetrical on the two gears. These pivots 71C, 81C constitute relatively sliding rollers in the slides 141C, 151C when the toothed wheels 7C, 8C rotate to induce alternate pivoting motion in the levers 14C, 15C. These levers rotate themselves on pivots 142C, 152C.

Le mouvement de montée et de descente de la tige 3C est schématisé par une double flèche. The up and down movement of the stem 3C is schematized by a double arrow.

Selon la figure 6, un quatrième mode de réalisation de l'invention sera décrit ci-après. Les parties communes avec le mode de réalisation des figures précédentes porteront les mêmes références complétées par la lettre D et leur description détaillée ne sera pas reprise.According to FIG. 6, a fourth embodiment of the invention will be described below. Common areas with the embodiment of the preceding figures will bear the same references supplemented by the letter D and their detailed description will not be repeated.

Dans ce mode de réalisation, la pièce 14D à laquelle sont reliées les bielles 12D, 13D entraínées par exemple par l'intermédiaire de la courroie 11D à partir du moteur 10D, est fixée à deux ensembles de bielles et levier, symétriques.In this embodiment, the piece 14D to which are connected the rods 12D, 13D driven by example via the belt 11D from the 10D motor, is attached to two sets of connecting rods and lever, symmetrical.

Cet ensemble de transmission reliant la plaque 14D à la tige 3D se compose dans la partie gauche de la figure, d'une bielle 30D articulée à la plaque 14D et à un levier coudé du premier genre à deux bras 31D, 34D montés autour d'un pivot fixe 33D.This transmission assembly connecting the plate 14D to the 3D rod is composed in the left part of the figure, a 30D linkage articulated to the 14D plate and a lever cranked first type with two arms 31D, 34D mounted around a fixed pivot 33D.

Le bras 31D passant par le pivot 33D est relié à l'équerre, au bras 31D au-delà du pivot 33D.The arm 31D passing through the pivot 33D is connected to the bracket, the arm 31D beyond the pivot 33D.

Le bras 31D est articulé à la bielle 30D par l'intermédiaire de l'articulation 32D et le bras 34D est relié à une bielle 36D par l'intermédiaire d'une articulation 35D. La bielle 36D est reliée par l'articulation 37D à la tige 3D.The arm 31D is articulated to the connecting rod 30D by through the 32D joint and the 34D arm is connected to a connecting rod 36D via a joint 35D. The connecting rod 36D is connected by the articulation 37D to the 3D stem.

La partie symétrique de ce système de bielles et levier porte les mêmes références que la partie décrite ci-dessus, augmentées de 10. Ainsi, cette partie se compose d'une première bielle 40D reliée à la plaque 14D et par une articulation 42D à un levier du premier genre à deux bras 41D, 44D dont le premier bras 41D passe par le pivot 43D. Le second bras 44D est relié par une articulation 45D à une bielle 46D elle-même articulée par l'articulation 47D à la tige 3D.The symmetrical part of this system of connecting rods and lever carries the same references as the part described above, increased by 10. Thus, this part is composed of a first link 40D connected to the plate 14D and by a 42D joint to a lever of the first kind with two arms 41D, 44D whose first arm 41D passes through the pivot 43D. The second arm 44D is connected by a hinge 45D to a connecting rod 46D itself articulated by the articulation 47D to the 3D stem.

Sous l'effet du mouvement de va et vient de la plaque 14D, les bielles et levier, symétriques, se déplacent comme l'indiquent les mouvements des articulations 32D, 35D ; 42D, 45D selon les doubles flèches.Under the effect of the movement back and forth 14D plate, connecting rods and lever, symmetrical, move as indicated by the movements of the joints 32D, 35D; 42D, 45D according to the double arrows.

Ce mécanisme démultiplicateur permet de régler la course de montée et de descente de la tige 3D en fonction de la puissance fournie par le moteur 10D et des données de l'installation et en particulier du débit.This reduction mechanism makes it possible to adjust the rise and fall of the 3D rod according to the power provided by the 10D engine and data from installation and in particular flow.

Selon la figure 7, la cinquième variante de réalisation de l'invention comporte également des parties communes avec les réalisations précédentes. Pour ces parties communes, on utilisera les mêmes références complétées du suffixe E.According to FIG. 7, the fifth embodiment variant of the invention also includes common parts with previous achievements. For these parts The same references will be used together with the suffix E.

Dans cette variante, la plaque 14E est relié à la tige 3E également par deux ensembles de levier et bielles, symétriques par rapport à l'axe ZZ. L'ensemble à gauche se compose d'une bielle 50E articulée à la plaque 14E et reliée (51E) à une biellette 52E elle-même articulée (53E) à un levier à deux bras 54E, 56E, dont le premier bras 54E est monté sur le pivot 55E, le second bras 56E étant perpendiculaire au prolongement du premier bras 56E au-delà du pivot 55E. Le second bras est relié par une articulation 57E à une bielle 58E elle-même reliée à la tige 3E par une articulation 59E.In this variant, the plate 14E is connected to the 3E rod also by two sets of lever and connecting rods, symmetrical with respect to the ZZ axis. The set on the left is consists of a connecting rod 50E articulated to the plate 14E and connected (51E) to a link 52E itself hinged (53E) to a lever with two arms 54E, 56E, whose first arm 54E is mounted on the pivot 55E, the second arm 56E being perpendicular to the extending the first arm 56E beyond the pivot 55E. The second arm is connected by a 57E hinge to a 58E rod itself connected to the rod 3E by a joint 59E.

L'autre ensemble de bielles et levier, symétriques se compose d'une bielle 60E reliée par une articulation 61E à une biellette 62E, elle-même reliée par une articulation 63E à un bras 64E d'un levier à deux bras 64E, 66E. Le premier bras est monté pivotant sur le pivot 65E et le second bras 66E est relié par l'articulation 67E à une bielle 68E elle-même reliée par une articulation 69E à la tige 3E. Ce mécanisme à bielle et biellette permet également une grande souplesse de réglage des courses et du fonctionnement de la pompe.The other set of connecting rods and lever, symmetrical consists of a 60E connecting rod connected by a joint 61E to a link 62E, itself connected by an articulation 63E to a 64E arm of a two-armed lever 64E, 66E. The first arm is pivotally mounted on the pivot 65E and the second arm 66E is connected by the articulation 67E to a connecting rod 68E itself connected by a hinge 69E to the rod 3E. This connecting rod mechanism and link also allows great flexibility in adjusting the strokes and the operation of the pump.

Claims (10)

  1. Deep-well pump for drawing water from an underground body of water, which pump comprises a tube connecting the surface to the body of water to be pumped and a rod which carries the pistons and is connected to a driving mechanism installed at the surface for imparting a to and fro pumping movement to the rod,
    characterised in that
    the mechanism comprises
    two identical toothed wheels (7, 8, 7A, 8A) which
    are mounted on axles (72, 82, 72A, 82A) symmetrical relative to the trajectory (ZZ) of the rod (3, 3A) carrying the pistons,
    mesh with one another in order to rotate in opposite directions,
    a motive unit (9, 10, 11) connected to at least one of the wheels (7, 7A) in order to drive it in rotation,
    two identical connecting rods (12, 13, 12A, 13A) each connected to the head (14, 14A) of the rod (3, 3A) and to a joint carried by each toothed wheel (71, 81, 71A, 81A), in symmetrical positions, in order to be driven according to symmetrical movements relative to the trajectory (ZZ) of the rod (3, 3A) in order to guide and drive the rod and its pistons.
  2. Pump according to claim 1,
    characterised in that
    the toothed wheels (7, 8, 7A, 8A) are driven by a crank carried by a flywheel.
  3. Pump according to claim 1,
    characterised by
    an inertia wheel (15) carried by one (7) of the two toothed wheels.
  4. Pump according to claim 1,
    characterised by
    a joining piece (14, 14A) between the heads (121A, 131A) of the connecting rods and the head (31A) of the rod (3).
  5. Pump according to claim 1,
    characterised in that
    the driving member is a crank (9) or an engine (10).
  6. Pump according to claim 1,
    characterised in that
    the connection between the meshing wheels and the driving member is made by a belt or a chain (11).
  7. Pump according to claim 1,
    characterised in that
    the connecting rods (12B, 13B) are connected to the rod (3B) by way of levers (14B, 15B) pivotably mounted on pivots (16B, 17B).
  8. Pump according to claim 1,
    characterised in that
    the connecting rods (12C, 13C) are connected to the toothed wheels (7C, 8C) by way of levers (14C, 15C) mounted on pivots (142C, 152C) and cooperating with the toothed wheels (7C, 8C) by a link having rollers (71C, 81C) and slides (141C, 151C), the slides being provided in the levers (14C, 15C) and the rollers being in the form of pivots (71C, 81C) carried by the toothed wheels (7C, 8C).
  9. Pump according to claim 1,
    characterised in that
    the plate (14D, 14E) is connected to the rod (3D, 3E) by way of a bent double-armed lever (31D, 34D; 41D, 44D; 54E, 56E; 64E, 66E), one end of which (32D, 42D; 53E, 63E) is connected by at least one connecting rod (30D, 40D; 50E, 60E) to the plate and the other end of which (35D, 45D, 57E, 67E) is connected by a connecting rod (36D, 46D; 58E, 68E) to the rod (3D, 3E), these lever/connecting rod assemblies being split in a symmetrical manner relative to the axis ZZ of movement of the rod (3E, 3D) of the pump.
  10. Pump according to claim 9,
    characterised in that
    the plate (14E) is connected to the bent lever (54E, 56E; 64E, 64D) by a connecting rod (50E, 60E) and a link (52E, 62E).
EP00400831A 1999-03-31 2000-03-27 Deep well pump Expired - Lifetime EP1041280B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9904019 1999-03-31
FR9904019A FR2791736A1 (en) 1999-03-31 1999-03-31 Pump for drawing water in subterranean layer has rod carrying pistons connected to surface driving mechanism
FR9915801 1999-12-15
FR9915801A FR2791737B1 (en) 1999-03-31 1999-12-15 EXHAUST PUMP

Publications (2)

Publication Number Publication Date
EP1041280A1 EP1041280A1 (en) 2000-10-04
EP1041280B1 true EP1041280B1 (en) 2005-07-06

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EP00400831A Expired - Lifetime EP1041280B1 (en) 1999-03-31 2000-03-27 Deep well pump

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US (1) US6371008B1 (en)
EP (1) EP1041280B1 (en)
JP (1) JP2000352374A (en)
KR (1) KR100357664B1 (en)
CN (1) CN1138067C (en)
AT (1) ATE299242T1 (en)
DE (1) DE60021132D1 (en)
DZ (1) DZ3028A1 (en)
EG (1) EG22613A (en)
ES (1) ES2243214T3 (en)
FR (1) FR2791737B1 (en)
MA (1) MA25084A1 (en)
OA (1) OA11613A (en)
PT (1) PT1041280E (en)
TN (1) TNSN00060A1 (en)
TR (1) TR200000894A3 (en)

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US8734132B2 (en) * 2009-10-19 2014-05-27 The Full Belly Project Ltd. Water pump for use in irrigation and for other purposes
RU2450161C2 (en) * 2010-08-17 2012-05-10 Государственное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) Pumping unit
RU2455526C1 (en) * 2010-12-23 2012-07-10 Государственное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) Conventional pumping unit
CN102996389A (en) * 2011-09-16 2013-03-27 奚文进 Manual liquid high-pressure pump
RU2716521C1 (en) * 2019-07-30 2020-03-12 Общество с ограниченной ответственностью "Завод дозировочной техники "Ареопаг" Piston device of pump
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Publication number Publication date
TR200000894A2 (en) 2001-02-21
EP1041280A1 (en) 2000-10-04
PT1041280E (en) 2005-11-30
CN1268626A (en) 2000-10-04
TNSN00060A1 (en) 2002-05-30
KR100357664B1 (en) 2002-10-25
TR200000894A3 (en) 2001-02-21
CN1138067C (en) 2004-02-11
ATE299242T1 (en) 2005-07-15
ES2243214T3 (en) 2005-12-01
US6371008B1 (en) 2002-04-16
MA25084A1 (en) 2000-10-01
FR2791737A1 (en) 2000-10-06
KR20000063095A (en) 2000-10-25
DE60021132D1 (en) 2005-08-11
OA11613A (en) 2004-09-10
DZ3028A1 (en) 2004-03-27
EG22613A (en) 2003-05-31
FR2791737B1 (en) 2002-02-15
JP2000352374A (en) 2000-12-19

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