EP1137885B1 - Leachate and depollution pneumatic pump with sleeve valve - Google Patents

Leachate and depollution pneumatic pump with sleeve valve Download PDF

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Publication number
EP1137885B1
EP1137885B1 EP99958249A EP99958249A EP1137885B1 EP 1137885 B1 EP1137885 B1 EP 1137885B1 EP 99958249 A EP99958249 A EP 99958249A EP 99958249 A EP99958249 A EP 99958249A EP 1137885 B1 EP1137885 B1 EP 1137885B1
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EP
European Patent Office
Prior art keywords
tubular body
pump
main chamber
liquid
sleeve valve
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EP99958249A
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German (de)
French (fr)
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EP1137885A1 (en
Inventor
Philippe Thurot
Jean-François Ranson
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Audit Conseil Efficacite Strategie Environneme
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Audit Conseil Efficacite Strategie Environnement & Developpement
AUDIT CONSEIL EFFICACITE STRAT
Audit Conseil Efficacite Strategie Environnement & Developpement
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Publication of EP1137885A1 publication Critical patent/EP1137885A1/en
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Publication of EP1137885B1 publication Critical patent/EP1137885B1/en
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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
    • 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

Definitions

  • the present invention relates to a pneumatic device of pumping a liquid.
  • the invention relates more particularly to a pneumatic device pumping operating intermittently and with compressed gas such as air, and which is intended to pump all kinds of liquids and more particularly, but not exclusively, liquids such as leachate discharge, liquids or polluted liquids and possibly loaded.
  • liquids such as leachate discharge, liquids or polluted liquids and possibly loaded.
  • Liquid means indifferently all these liquids.
  • the pneumatic pumping device of the invention is intended for work submerged and pick up leachates and other liquids, which they polluted and / or charged or not, from depths of about 50 at 60 meters.
  • Such liquids may have a high temperature, for example example of the order of 80 ° C.
  • these liquids can be loaded into salt and convey abrasive particles such as sand, fines clay or sandy mud.
  • motor pumps are often not explosion-proof because operating directly by the supply of electricity; and pumps known pneumatic tires, which are certainly explosion-proof because they operate energy produced by compressed air, all include strainers, flaps or floats that get clogged or get stuck regularly due to the presence of mud or silt at the bottom of the pumping wells liquids, and chloride deposits.
  • the presence of a float or valve can limit the possibilities of positioning the pump.
  • a pump using the pressure of a fluid to produce the elevation of a liquid is known from FR-A-716940.
  • This pump consists of an enclosure 12, immersed in the liquid to be raised, communicating with outside by two tubes, one of which stops at the party is used for the introduction of the fluid under pressure, the other penetrating towards the bottom serves for the repression produced by the fluid pressure.
  • the surrounding liquid comes into the enclosure by openings which are closed by the swelling of a flexible material chamber produced by the setting in communication of this room with the fluid under pressure.
  • the object of the invention is to propose a pneumatic device of pumping which is able to overcome the drawbacks stated above and which can be placed easily in a pit or pit at depths variables.
  • the object of the invention is achieved by a pneumatic device of pumping a liquid operating discontinuously and immersed and with a compressed gas and which is intended to pump liquids such as leachate from a landfill.
  • This device comprises a tubular body constituting a pump body and delimiting a main chamber cylindrical in the upstream and downstream ends of which open respectively an inlet port and an outlet port for the liquid to pump.
  • the pneumatic device comprises a sleeve valve arranged in front of the inlet port to control the passage of the liquid to be pumped through this orifice, means making it possible to control the opening and closing of the sleeve valve by a gas compressed, a discharge pipe passing through the outlet and extending inside the tubular body over most of the length of the latter, and means for feeding the chamber main compressed gas.
  • the pneumatic pumping device hereinafter also called “the pump”
  • the pump is designed to operate in a submerged manner.
  • arrangement of the discharge pipe in the upper plate of the body tubular is advantageous because the liquid to be pumped can be evacuated by a straight pipe.
  • any other provision of this example the connection of an angled pipe to the side wall of the body tubular also corresponds to the principle of the present invention.
  • the pump works as follows:
  • the secondary chamber of the pinch valve is placed in position low pressure.
  • the sleeve relaxes, the sleeve valve opens and the liquid to be pumped enters the main chamber of the pump submerged.
  • the levels of the liquid inside the pump and outside, that is to say in the well, are balanced according to the principle of the vases communicating.
  • timer When the master bedroom is full, means of time delay ("timer") operate a control device of the pinch valve and pressurize it. Compressed air is then put into communication with the secondary chamber of the valve at sleeve, so that the pressure of the compressed air repels the sleeve deformable up to a throat to seal the inlet of the master bedroom and thus prevent any entry and exit of liquids and juice in the pump body, which insulates liquids and juice from the middle outside the well, in the pump body.
  • timer time delay
  • compressed air is sent into the main chamber of the body of the pump. This arrival of compressed air causes the expulsion of leachate and liquids contained in the body of the pump, through the hose of discharge to the surface of the well and into a collector, in a tank or in any other appropriate means made available to receive the pumped liquid.
  • the control device of the pinch valve puts the secondary chamber at low pressure, which allows, on the one hand, the sleeve to expand and release the inlet port of the chamber principal and, by that, on the other hand, to the pumping device to find itself at the beginning of the cycle.
  • the pipe is integrated in the body of the pump, according to the second, it is placed along the pump body outside of it, and according to the third variant, a protective chute is fixed against the body of pump and the pipe is placed inside the chute.
  • This chute can also receive wires connected to contacts level servo. These contacts determine a signal that allows shutdown or restart of the pump, depending on the level of the liquid in the well.
  • the presence of a chute also allows the insertio of a pipe a fluidic level detection device of the "bubble bubble” type.
  • the staging of several contacts along the pump body allows to generate stepped signals providing the operator with a water balance well, at the moment considered.
  • the major interest of the pneumatic pumping device according to the invention is due to the fact that it is totally explosion-proof and that, combined with several electrodes correctly implanted at defined distances along the chute or along the pump body, for example to distances of five, ten or twenty centimeters, it also allows to obtain, at any moment, by periodic or continuous reading of these signals, the level and the variation of liquid levels in the pit or pit.
  • FIGS. 1 to 4 represent a pumping device ("the pump") according to a preferred embodiment of the invention, in four successive stages of a pumping cycle.
  • the pump comprises a tubular body 1 constituting a body of pump and delimiting a cylindrical main chamber 2 in the upstream ends 3 and downstream 4 from which open respectively a inlet port 5 and an outlet port 6 for the liquid to be pumped.
  • the pump also comprises a sleeve valve 7 arranged in front of the inlet port 5 to control the passage of the liquid to be pumped through this orifice, means 8 for controlling the opening and the closing of the sleeve valve 7 by a compressed gas, a pipe of discharge 9 passing through the outlet orifice 6 and extending inside the tubular body over most of the length of the latter, and means 10 for supplying the main chamber 2 with gas compressed.
  • the discharge pipe is advantageously, but not necessarily, provided with a non-return valve 18.
  • the tubular body 1 is formed by a cylindrical tube of revolution closed at both ends, the lower and upstream end 3 and the end upper and lower 4, respectively by a lower plate 31 and by a upper plate 41, which delimit inside the tubular body 1 the master bedroom 2.
  • the plates 11 and 31 constitute the upstream and downstream ends of the secondary chamber, each provided with a passage opening.
  • the wall of the pump body extends beyond the lower plate 31 for also constitute the outer wall of the sleeve valve 7.
  • the pinch valve 7 comprises, besides the outer wall, a plate 11 delimiting with the outer wall and with the bottom plate 31 of the main chamber 2, a secondary chamber 12.
  • the plate 11 is provided of a passage opening 13 through which the liquid to be pumped enters the valve 7. The liquid then leaves through the lower hole 5 of the chamber main 2 which has, in the embodiment shown, the dual function opening of passage at the outlet of the sleeve valve 7 and inlet orifice from the master bedroom 2.
  • the sleeve valve can be an individual element having its own tubular body constituting the outer wall of the valve and having a top plate distinct from the plate 31 and provided with a passage opening constituting the outlet of the valve 7.
  • the diameter of the outer wall of the valve may be different from that of the pump body.
  • the sleeve valve 7 comprises, whatever its configuration, a sleeve 14 which is elastically deformable and which connects the openings upstream and downstream of the valve, thus forming a channel through which the liquid to pump must pass to enter the main chamber 2 of the pump.
  • the sleeve 14 also separates the chamber from the chamber hermetically secondary, which surrounds the canal.
  • the pump body is provided, in its upper part, with two orifices 15 and 16 through which two gas supply pipes pass tablet, referenced 8 and 10.
  • the feed pipe 8 is representative of the means for control the opening and closing of the sleeve valve 7 by a gas compressed, for example by compressed air.
  • This pipe 8 is connected by a from its ends to the secondary chamber 12 and the other end to a generally flexible conduit which, in turn, is connected to a gas source compressed. According to the embodiment shown, the pipe 8 passes through the orifice 15 made in the upper plate 41 of the pump body.
  • the supply pipe 10 is representative of the means allowing to supply compressed gas to the main chamber 2.
  • This pipe 10 is connected by one of its ends to the orifice 16 formed in the plate upper 41 of the pump body and the other end to a conduit generally flexible which, in turn, is connected to a gas source compressed.
  • This source of compressed gas for example an air reservoir compressed, can be the same as the one that feeds the secondary chamber. It goes without saying that, in this case, each of the pipes 8 and 10 is connected to the compressed air tank by separate control means.
  • the pump body further comprises two welded 17 eyelets on the upper plate 41 of the pump body, to fix, for example, a chain or cable through which, or which, the pump is handled and kept in the well.
  • the pump can be equipped with a tripod fixed to the pump casing, for example at a height of the plate 31, by means of a base welded to the pump body. Space formed by the feet of the tripod, can be delimited by a mesh grid fixed around the tripod and protecting the pinch valve from the input of plastics or other potential bodies.
  • the protective mesh grid around the tripod can be made a double row of meshes of identical dimensions or different.
  • the diameter of compressed air supply pipes and liquid flow is a function of the desired flow rate, and the length of these Pipes are a function of the lift height of the liquid in the well.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A pneumatic pumping device for pumping liquids such as landfill leachates and polluted liquids or thick matter includes a tubular body (1) forming a pump body and defining a cylindrical main chamber (2) in the upstream and downstream ends of which respectively emerge an inlet (3) and outlet (4) for the liquid to be pumped. The pneumatic device further includes a sleeve valve (7) arranged in front of the inlet to control the passage of the liquid to be pumped through the orifice, elements (8) for controlling the opening and closure of the sleeve valve with a compressed gas, a delivery pipe (9) passing through the outlet and extending inside the tubular body over the major part of the length thereof, and elements for supplying the main chamber with compressed gas.

Description

La présente invention a pour objet un dispositif pneumatique de pompage d'un liquide.The present invention relates to a pneumatic device of pumping a liquid.

L'invention concerne plus particulièrement un dispositif pneumatique de pompage fonctionnant de manière discontinue et avec un gaz comprimé tel que de l'air, et qui est destiné à pomper toutes sortes de liquides et plus particulièrement, mais non exclusivement, des liquides tels que des lixiviats d'une décharge, des liquides chargés ou des liquides pollués et éventuellement chargés. Dans le cadre de la présente invention, le terme « liquide » désigne indifféremment tous ces liquides.The invention relates more particularly to a pneumatic device pumping operating intermittently and with compressed gas such as air, and which is intended to pump all kinds of liquids and more particularly, but not exclusively, liquids such as leachate discharge, liquids or polluted liquids and possibly loaded. In the context of the present invention, the term "Liquid" means indifferently all these liquids.

Le dispositif pneumatique de pompage de l'invention est destiné à travailler immergé et de relever des lixiviats et d'autres liquides, qu'ils soient pollués et/ou chargés ou non, depuis des profondeurs de l'ordre de 50 à 60 mètres. De tels liquides peuvent avoir une température élevée, par exemple de l'ordre de 80 °C. De plus, ces liquides peuvent être chargés en sel et véhiculer des particules abrasives telles que du sable, des fines argileuses ou des boues sableuses.The pneumatic pumping device of the invention is intended for work submerged and pick up leachates and other liquids, which they polluted and / or charged or not, from depths of about 50 at 60 meters. Such liquids may have a high temperature, for example example of the order of 80 ° C. In addition, these liquids can be loaded into salt and convey abrasive particles such as sand, fines clay or sandy mud.

La plupart des pompes existantes sur le marché présentent de nombreux inconvénients dès lors qu'il s'agit de les utiliser pour relever des lixiviats ou des liquides pollués et/ou chargés.Most existing pumps on the market have many disadvantages when it comes to using them to leachate or polluted and / or laden liquids.

En effet, les pompes à moteur ne sont souvent pas antidéflagrantes car fonctionnant directement par l'apport d'électricité; et les pompes pneumatiques connues, qui sont certes antidéflagrantes car fonctionnant par l'énergie produite par l'air comprimé, comportent toutes des crépines, des clapets ou des flotteurs qui se bouchent ou se bloquent régulièrement du fait de la présence de boue ou de vase au fond des puits de relevage des liquides, et de dépôts de chlorure. De plus, la présence d'un flotteur ou d'un clapet peut limiter les possibilités de positionnement de la pompe.Indeed, motor pumps are often not explosion-proof because operating directly by the supply of electricity; and pumps known pneumatic tires, which are certainly explosion-proof because they operate energy produced by compressed air, all include strainers, flaps or floats that get clogged or get stuck regularly due to the presence of mud or silt at the bottom of the pumping wells liquids, and chloride deposits. In addition, the presence of a float or valve can limit the possibilities of positioning the pump.

Ces problèmes conduisent à des frais élevés de maintenance et d'entretien des pompes, ainsi qu'à une manipulation réitérée des matériels malgré les risques de toxicité liés à certains produits pompés. These problems lead to high maintenance costs and maintenance of pumps, as well as repeated handling of equipment despite the risks of toxicity associated with certain pumped products.

En outre, pour certaines pompes pneumatiques, il est proposé des dispositifs associés à un flotteur qui déclenchent directement l'arrivée d'air dans la pompe. L'intérêt de ces pompes est de pouvoir commander directement le fonctionnement de la pompe, en fonction de l'arrivée et du niveau du liquide. Cependant, lorsque le flotteur est bloqué, la pompe ne fonctionne plus et l'exploitant de la pompe ne peut pas savoir si celle-ci marche, ne marche pas ou est au repos.In addition, for certain pneumatic pumps, it is proposed that devices associated with a float that directly trigger the air supply in the pump. The interest of these pumps is to be able to control directly the operation of the pump, depending on the arrival and the liquid level. However, when the float is blocked, the pump operates more and the pump operator can not know if this walks, does not walk or is at rest.

Un autre inconvénient est le très grand nombre de pièces de maintenance.Another disadvantage is the very large number of pieces of maintenance.

Egalement, dans la plupart des décharges se pose en permanence le problème de la présence de films plastiques sumageants dans les lixiviats, ce qui provoque régulièrement le bouchage et l'arrêt de fonctionnement des pompes.Also, in most landfills the permanent problem of the presence of oversamplastic plastic films in leachates, which regularly causes clogging and shutdown of pumps.

Par ailleurs, il peut être intéressant pour l'exploitant de la décharge, de réguler le fonctionnement de la pompe selon le niveau des lixiviats ou des liquides pollués dans le puits, tout en étant garanti d'être sans risque de déflagration déclenchée, par exemple, par une étincelle. Car, en effet, les puits des décharges ont désormais souvent une double vocation: celle de permettre, à la fois, le relevage des lixiviats et le pompage des biogaz.Moreover, it may be interesting for the operator of the landfill, regulate the operation of the pump according to the level of leachate or polluted liquids in the well, while being guaranteed to be safe from blast triggered, for example, by a spark. Because, in fact, dumping wells now often have a double purpose: that of allow both leachate lifting and biogas pumping.

Une pompe employant la pression d'un fluide pour produire l'élévation d'un liquide, est connue du document FR-A-716940. Cette pompe est constituée par une enceinte 12, immergée dans le liquide à élever, communiquant avec l'extérieur par deux tubes, dont l'un s'arrêtant à la partie supérieure sert à l'introduction du fluide sous pression, l'autre pénétrant jusque vers le fond sert au refoulement produit par la pression du fluide. Le liquide environnant entre dans l'enceinte par des ouvertures qui sont obturées par le gonflement d'une chambre en matière flexible, produit par la mise en communication de cette chambre avec le fluide sous pression.A pump using the pressure of a fluid to produce the elevation of a liquid, is known from FR-A-716940. This pump consists of an enclosure 12, immersed in the liquid to be raised, communicating with outside by two tubes, one of which stops at the party is used for the introduction of the fluid under pressure, the other penetrating towards the bottom serves for the repression produced by the fluid pressure. The surrounding liquid comes into the enclosure by openings which are closed by the swelling of a flexible material chamber produced by the setting in communication of this room with the fluid under pressure.

Le but de l'invention est de proposer un dispositif pneumatique de pompage qui soit apte à palier les inconvénients énoncés plus haut et qui puisse être posé facilement dans un puits ou une fosse à des profondeurs variables.The object of the invention is to propose a pneumatic device of pumping which is able to overcome the drawbacks stated above and which can be placed easily in a pit or pit at depths variables.

Le but de l'invention est atteint par un dispositif pneumatique de pompage d'un liquide fonctionnant de manière discontinue et immergé et avec un gaz comprimé et qui est destiné à pomper des liquides tels que des lixiviats d'une décharge. Ce dispositif comprend un corps tubulaire constituant un corps de pompe et délimitant une chambre principale cylindrique dans les extrémités amont et aval de laquelle débouchent respectivement un orifice d'entrée et un orifice de sortie pour le liquide à pomper. The object of the invention is achieved by a pneumatic device of pumping a liquid operating discontinuously and immersed and with a compressed gas and which is intended to pump liquids such as leachate from a landfill. This device comprises a tubular body constituting a pump body and delimiting a main chamber cylindrical in the upstream and downstream ends of which open respectively an inlet port and an outlet port for the liquid to pump.

Conformément à l'invention, le dispositif pneumatique comprend une vanne à manchon disposé devant l'orifice d'entrée afin de contrôler le passage du liquide à pomper par cet orifice, des moyens permettant de commander l'ouverture et la fermeture de la vanne à manchon par un gaz comprimé, un tuyau de refoulement traversant l'orifice de sortie et s'étendant à l'intérieur du corps tubulaire sur la plus grande partie de la longueur de ce dernier, et des moyens permettant d'alimenter la chambre principale en gaz comprimé.According to the invention, the pneumatic device comprises a sleeve valve arranged in front of the inlet port to control the passage of the liquid to be pumped through this orifice, means making it possible to control the opening and closing of the sleeve valve by a gas compressed, a discharge pipe passing through the outlet and extending inside the tubular body over most of the length of the latter, and means for feeding the chamber main compressed gas.

L'invention concerne également les caractéristiques ci-après, considérées isolément ou selon toutes leurs combinaisons techniquement possibles:

  • Le dispositif de pompage peut être utilisé aussi bien en position verticale qu'en biais.
The invention also relates to the following features, considered individually or in all their technically possible combinations:
  • The pumping device can be used both vertically and skewed.

Cet avantage est dû au fait que le dispositif ne comporte pas de clapet ni de flotteur.

  • Le corps tubulaire constituant un corps de pompe est formé essentiellement par un tube cylindrique fermé à ses deux extrémités, l'extrémité amont et l'extrémité aval, respectivement par une plaque inférieure et par une plaque supérieure, l'espace entre ces deux plaques constituant la chambre principale du dispositif de pompage, l'orifice d'entrée de la chambre principale étant disposé dans la partie inférieure du corps tubulaire, considéré dans la position d'utilisation du dispositif de l'invention, et l'orifice de sortie étant disposé dans la partie supérieure du corps tubulaire.
  • Avantageusement, au vu de la forme cylindrique tant du corps tubulaire que de la chambre principale, l'orifice d'entrée de la chambre principale est situé dans la plaque inférieure du corps tubulaire et l'orifice de sortie est situé dans la plaque supérieure.
  • Le corps de pompe est cylindrique de révolution.
  • La vanne à manchon est constituée par un corps tubulaire formant une chambre secondaire dans les extrémités amont et aval de laquelle débouche, à chacune des deux extrémités, au moins une ouverture de passage pour le liquide à pomper. Ces ouvertures de passage sont reliées entre elles par un manchon élastiquement déformable qui constitue un canal par lequel le liquide à pomper doit passer pour entrer dans la chambre principale du dispositif de pompage. Le manchon sépare hermétiquement le canal de la chambre secondaire, qui entoure le canal.
  • Le corps tubulaire de la pompe, les plaques et la vanne à manchon sont réalisés en des matériaux résistants à des liquides chargés, pollués, salins et pouvant avoir des températures supérieures à 80 °C.
  • Le corps de la pompe peut être fait dans un matériau choisi dans le groupe constitué par le fer, l'acier inoxydable, l'inox, le fer revêtu, les élastomères, les matériaux en fibre de verre et de carbone, les matériaux résistants aux très hautes températures et à la pression, les matériaux revêtus et les alliages.
  • Le matériau du corps tubulaire de la pompe est choisi de façon que le corps puisse être protégé par un revêtement anticorrosion, évitant les oxydations et les dépôts de chlorure.
  • La vanne à manchon est disposé à l'extérieur du, et adjacent au, corps tubulaire devant l'orifice d'entrée, et le manchon est avantageusement disposé coaxialement par rapport à l'axe de l'orifice d'entrée. Toutefois, le manchon peut également être disposé radialement décalé. Le liquide à pomper ne peut accéder à la chambre principale tant que la vanne à manchon est fermée.
  • L'orifice d'entrée de la chambre principale et le manchon de la vanne à manchon sont disposés coaxialement par rapport à l'axe du corps tubulaire.
  • Afin de contrôler le passage du liquide à pomper par l'orifice d'entrée, l'espace entourant le canal de passage de la vanne à manchon est relié par un tuyau solidaire du corps tubulaire, à une source d'alimentation en gaz comprimé. Cette disposition permet de commander la fermeture de la vanne à manchon par injection d'un gaz comprimé dans l'espace de la chambre secondaire entourant le canal et de provoquer un étranglement du manchon.
  • Le tuyau de refoulement traversant l'orifice de sortie s'étend à l'extérieur de la chambre principale sur une distance permettant le raccordement du tuyau de refoulement à un conduit qui relie le dispositif de pompage à un collecteur destiné à recevoir le liquide à pomper.
  • Le tuyau de refoulement est pourvu d'un moyen anti-retour.
  • Le tuyau de refoulement s'étend à l'intérieur de la chambre principale presque jusqu'à la plaque inférieure. La distance entre l'extrémité libre du tuyau de refoulement et la plaque inférieure définit le volume, ou la quantité, de liquide qui reste dans la chambre principale à la fin de la phase de refoulement. Un choix judicieux de cette distance rend possible que la chambre principale soit vidée entièrement.
  • Les moyens permettant d'alimenter la chambre principale en gaz comprimé sont avantageusement constitués par une ouverture pratiquée dans la plaque supérieure du corps tubulaire, l'ouverture permettant le raccordement de la chambre principale, par exemple par un tuyau traversant la plaque supérieure du corps tubulaire ou par tout autre moyen approprié, à une source d'alimentation en gaz comprimé.
  • L'un au moins des tuyaux parmis le tuyau de refoulement, le tuyau d'alimentation en gaz comprimé de la chambre prinipale et le tuyau d'alimentation en gaz comprimé de la chambre secondaire, ne dépasse pas de la paroi du corps de pompe. Le raccordement au(x) tuyau(x) concerné(s) se fait, par exemple, par un raccord (ou des raccords) fileté(s).
  • Le dispositif de pompage est pourvu d'au moins un oeilleton pour la fixation d'une chaíne, d'un câble ou d'un filin permettant de descendre le dispositif dans un puits, de le fixer et maintenir à un niveau (une profondeur) déterminé(e), de le soulever et de le remonter et sortir du puits. Le plus souvent, le dispositif de pompage sera pourvu de deux oeilletons, mais il peut bien entendu être pourvu de plus que de deux oeilletons.
  • Le dispositif de pompage est pourvu d'une grille de protection ou d'une crépine permettant de protéger la vanne à manchon contre des charges dont les dimensions dépassent une valeur limite choisie. Cette valeur limite, ou calibre maximal, est avantageusement définie par la taille des mailles de la grille.
  • Le dispositif de pompage est pourvu d'un trépied solidaire du corps de pompe ou d'un trépied fixé par vissage ou soudage, par exemple au moyen d'un socle circulaire d'assise, au corps de pompe.
  • Les deux tubes servant pour le raccord à l'alimentation en air comprimé du corps de pompe et de la vanne à manchon, et éventuellement aussi le tuyau de refoulement, dépassent du corps de la pompe. Dans ce cas de configuration, le raccordement de chacun de ces tubes à des conduits correspondants venant de la surface du puits ou de la fosse, est fait, par exemple par un raccord fileté, à une distance donnée de la plaque supérieure du corps de pompe. Cette disposition facilite à l'opérateur la préemption de la pompe lorsqu'il l'insère dans le puits ou la fosse.
This advantage is due to the fact that the device has no valve or float.
  • The tubular body constituting a pump body is essentially formed by a cylindrical tube closed at its two ends, the upstream end and the downstream end, respectively by a lower plate and by an upper plate, the space between these two plates constituting the main chamber of the pumping device, the inlet of the main chamber being disposed in the lower part of the tubular body, considered in the position of use of the device of the invention, and the outlet orifice being disposed in the upper part of the tubular body.
  • Advantageously, in view of the cylindrical shape of both the tubular body and the main chamber, the inlet of the main chamber is located in the lower plate of the tubular body and the outlet orifice is located in the upper plate.
  • The pump body is cylindrical of revolution.
  • The sleeve valve is constituted by a tubular body forming a secondary chamber in the upstream and downstream ends of which opens at each of the two ends, at least one passage opening for the liquid to be pumped. These passage openings are interconnected by an elastically deformable sleeve which constitutes a channel through which the liquid to be pumped must pass to enter the main chamber of the pumping device. The sleeve hermetically separates the channel from the secondary chamber, which surrounds the channel.
  • The tubular body of the pump, the plates and the pinch valve are made of materials resistant to charged, polluted, saline liquids and may have temperatures above 80 ° C.
  • The body of the pump may be made of a material selected from the group consisting of iron, stainless steel, stainless steel, coated iron, elastomers, fiberglass and carbon materials, very high temperatures and pressure, coated materials and alloys.
  • The tubular body material of the pump is chosen so that the body can be protected by an anticorrosive coating, avoiding oxidation and chloride deposition.
  • The pinch valve is disposed outside and adjacent to the tubular body in front of the inlet port, and the sleeve is preferably disposed coaxially with the axis of the inlet port. However, the sleeve can also be arranged radially offset. The liquid to be pumped can not access the main chamber as long as the pinch valve is closed.
  • The inlet port of the main chamber and the sleeve of the sleeve valve are arranged coaxially with respect to the axis of the tubular body.
  • In order to control the passage of the liquid to be pumped through the inlet orifice, the space surrounding the passage channel of the sleeve valve is connected by a pipe integral with the tubular body, to a source of compressed gas supply. This arrangement makes it possible to control the closure of the sleeve valve by injecting a compressed gas into the space of the secondary chamber surrounding the channel and to cause a constriction of the sleeve.
  • The discharge pipe through the outlet port extends out of the main chamber a distance for connection of the discharge pipe to a pipe connecting the pumping device to a manifold for receiving the liquid to be pumped. .
  • The discharge pipe is provided with a non-return means.
  • The discharge pipe extends inside the main chamber almost to the bottom plate. The distance between the free end of the discharge pipe and the bottom plate defines the volume, or amount, of liquid remaining in the main chamber at the end of the discharge phase. A careful choice of this distance makes it possible for the master bedroom to be emptied entirely.
  • The means for supplying the main chamber with compressed gas are advantageously constituted by an opening made in the upper plate of the tubular body, the opening allowing the connection of the main chamber, for example by a pipe passing through the upper plate of the tubular body. or by any other suitable means, to a source of compressed gas supply.
  • At least one of the pipes through the discharge pipe, the compressed gas supply pipe of the main chamber and the compressed gas supply pipe of the secondary chamber does not protrude from the wall of the pump body. The connection to the pipe (s) concerned is, for example, via a threaded connection (s).
  • The pumping device is provided with at least one eyecup for fixing a chain, a cable or a rope enabling the device to be lowered into a well, to fix it and maintain it at a level (a depth) determined, to lift and reassemble and exit the well. Most often, the pumping device will be provided with two eyecups, but it can of course be provided with more than two eyecups.
  • The pumping device is provided with a protective grid or a strainer for protecting the pinch valve against loads whose dimensions exceed a chosen limit value. This limit value, or maximum size, is advantageously defined by the mesh size of the grid.
  • The pumping device is provided with a tripod integral with the pump body or a tripod fixed by screwing or welding, for example by means of a circular seating base, to the pump body.
  • The two tubes used for connection to the compressed air supply of the pump body and the sleeve valve, and possibly also the discharge pipe, protrude from the pump body. In this case of configuration, the connection of each of these tubes to corresponding conduits coming from the surface of the well or the pit, is made, for example by a threaded connection, at a given distance from the upper plate of the pump body. . This arrangement facilitates the operator pre-emption of the pump when inserting it into the pit or pit.

Le dispositif pneumatique de pompage, appelé par la suite aussi « la pompe », est conçu pour fonctionner de manière immergée. Aussi, la disposition du tuyau de refoulement dans la plaque supérieure du corps tubulaire est avantageuse du fait que le liquide à pomper peut être évacué par un tuyau droit. Toutefois, toute disposition différente de celle-ci, par exemple le raccordement d'un tuyau coudé à la paroi latérale du corps tubulaire, correspond également au principe de la présente invention.The pneumatic pumping device, hereinafter also called "the pump ", is designed to operate in a submerged manner. Also, arrangement of the discharge pipe in the upper plate of the body tubular is advantageous because the liquid to be pumped can be evacuated by a straight pipe. However, any other provision of this example the connection of an angled pipe to the side wall of the body tubular, also corresponds to the principle of the present invention.

La pompe fonctionne de la façon suivante:The pump works as follows:

La chambre secondaire de la vanne à manchon est mis en position basse pression. Ainsi, le manchon se détend, la vanne à manchon s'ouvre et le liquide à pomper entre dans la chambre principale de la pompe immergée.The secondary chamber of the pinch valve is placed in position low pressure. Thus, the sleeve relaxes, the sleeve valve opens and the liquid to be pumped enters the main chamber of the pump submerged.

Les niveaux du liquide à l'intérieur de la pompe et à l'extérieur, c'est-à-dire dans le puits, s'équilibrent selon le principe des vases communiquants. The levels of the liquid inside the pump and outside, that is to say in the well, are balanced according to the principle of the vases communicating.

Lorsque la chambre principale est pleine, des moyens de temporisation («minuterie ») actionnent un dispositif de commande de la vanne à manchon et mettent cette dernière en pression. De l'air comprimé est alors mis en communication avec la chambre secondaire de la vanne à manchon, ce qui fait que la pression de l'air comprimé repousse le manchon déformable jusqu'à étranglement pour obturer l'orifice d'entrée de la chambre principale et empêcher ainsi toute entrée et sortie des liquides et jus dans le corps de pompe, ce qui isole les liquides et jus du milieu extérieur du puits, dans le corps de pompe.When the master bedroom is full, means of time delay ("timer") operate a control device of the pinch valve and pressurize it. Compressed air is then put into communication with the secondary chamber of the valve at sleeve, so that the pressure of the compressed air repels the sleeve deformable up to a throat to seal the inlet of the master bedroom and thus prevent any entry and exit of liquids and juice in the pump body, which insulates liquids and juice from the middle outside the well, in the pump body.

Après un temps donné par les moyens de temporisation, garantissant la fermeture du manchon de la vanne à manchon et son maintien en cet état fermé, de l'air comprimé est envoyé dans la chambre principale du corps de la pompe. Cette arrivée d'air comprimé provoque l'expulsion des lixiviats et des liquides contenus dans le corps de la pompe, à travers le tuyau de refoulement vers la surface du puits et dans un collecteur, dans une citerne ou dans tout autre moyen approprié mis à disposition pour recevoir le liquide pompé.After a given time by the delay means, guaranteeing the closure of the sleeve of the pinch valve and its maintenance in this state closed, compressed air is sent into the main chamber of the body of the pump. This arrival of compressed air causes the expulsion of leachate and liquids contained in the body of the pump, through the hose of discharge to the surface of the well and into a collector, in a tank or in any other appropriate means made available to receive the pumped liquid.

Lorsque la chambre principale et le tuyau de refoulement sont vidés de tout liquide, le dispositif de commande de la vanne à manchon met la chambre secondaire à basse pression, ce qui permet, d'une part, au manchon de se dilater et de libérer l'orifice d'entrée de la chambre principale et, par cela, d'autre part, au dispositif de pompage de se retrouver en début de cycle.When the main chamber and the discharge pipe are emptied of any liquid, the control device of the pinch valve puts the secondary chamber at low pressure, which allows, on the one hand, the sleeve to expand and release the inlet port of the chamber principal and, by that, on the other hand, to the pumping device to find itself at the beginning of the cycle.

Pour obtenir un bon fonctionnement de la pompe, un certain nombre de conditions doivent être avantageusement réunies:

  • La vanne à manchon est installée dans le prolongement de la chambre principale. Avantageusement, le corps tubulaire constitue à la fois la paroi extérieure de la chambre principale et celle de la chambre secondaire. Dans cette disposition, la plaque inférieure sépare hermétiquement les deux chambres.
  • L'ouverture de passage de la vanne se trouve à un niveau au dessus duquel on veut impérativement vider la décharge ou le puits de relevage des liquides pollués.
  • Le remplissage de la pompe avec l'air comprimé se fait par la partie haute du corps de la pompe afin d'éviter la formation de bulles d'air dans le liquide.
  • Le manchon déformable est en un matériau résistant à l'abrasion et à des températures de l'ordre de 80 °C, et peut également être résistant aux différents types de liquides pollués ou avoir toutes ces qualités à la fois.
  • Le corps de la pompe est cylindrique et correspond, en ce qui concerne sa forme et/ou ses dimensions, aux différents diamètres des puits.
  • La longueur du corps de la pompe correspond aux principaux diamètres des puits, mais est au minimum de un mètre, permettant la contenance de lixiviats ou de liquides pollués de l'ordre de 4 à 5 litres.
  • A titre d'exemple, un corps de pompe d'une longueur d'un mètre et d'un diamètre utile de 80 mm a une contenance proche de 4 à 5 litres.
  • La pression d'utilisation de la vanne à manchon est déterminée par la pression limite garantissant son étanchéité parfaite.
  • La pression maximum d'utilisation de l'air comprimé dans le corps de pompe est inférieure de 1,5 à 2 bars à celle utilisée dans la vanne à manchon. Ainsi, à titre d'exemple, pour une vanne à manchon garantie 8 bars, la pression d'utilisation ne doit pas dépasser 6 à 6,5 bars. Avec une pression de l'ordre de 6 à 6,5 bars, le dispositif permet un pompage à faible débit de l'ordre de 0 à 10 m3 par jour, ce qui correspond à l'essentiel des applications. Une telle pression dans le corps de la pompe permet le relevage de liquides sur une hauteur totale de relèvement d'environ 60 à 65 mètres, pour des liquides dont la densité est voisine de 1.
To obtain proper operation of the pump, a number of conditions must be advantageously met:
  • The pinch valve is installed in the extension of the main chamber. Advantageously, the tubular body constitutes both the outer wall of the main chamber and that of the secondary chamber. In this arrangement, the lower plate hermetically separates the two chambers.
  • The passage opening of the valve is at a level above which it is imperative to empty the discharge or the lifting shaft of polluted liquids.
  • The filling of the pump with compressed air is done by the upper part of the pump body to prevent the formation of air bubbles in the liquid.
  • The deformable sleeve is made of a material resistant to abrasion and at temperatures of the order of 80 ° C, and can also be resistant to different types of polluted liquids or all of these qualities at once.
  • The body of the pump is cylindrical and corresponds, with respect to its shape and / or its dimensions, to the different diameters of the wells.
  • The length of the body of the pump corresponds to the main diameters of the wells, but is at least one meter, allowing the capacity of leachate or polluted liquids of the order of 4 to 5 liters.
  • For example, a pump body with a length of one meter and a useful diameter of 80 mm has a capacity close to 4 to 5 liters.
  • The operating pressure of the sleeve valve is determined by the limiting pressure guaranteeing its perfect sealing.
  • The maximum operating pressure of the compressed air in the pump casing is 1.5 to 2 bars lower than that used in the sleeve valve. Thus, for example, for a 8 bar guaranteed sleeve valve, the operating pressure must not exceed 6 to 6.5 bar. With a pressure of the order of 6 to 6.5 bar, the device allows a low flow rate of the order of 0 to 10 m 3 per day, which corresponds to most applications. Such pressure in the body of the pump allows the lifting of liquids over a total height of recovery of about 60 to 65 meters, for liquids whose density is close to 1.

Pour protéger le tuyau d'alimentation en air comprimé de la vanne à manchon contre des éventuelles détériorations dues au frottement contre la paroi du puits, trois variantes de réalisation sont prévues: Selon la première, le tuyau est intégré dans le corps de la pompe, selon la deuxième, il est placé le long du corps de pompe à l'extérieur de celui-ci, et selon la troisième variante, une goulotte de protection est fixée contre le corps de pompe et le tuyau est placé à l'intérieur de la goulotte.To protect the compressed air supply hose from the valve to sleeve against possible damage due to friction against the well wall, three variants are provided: According to the first, the pipe is integrated in the body of the pump, according to the second, it is placed along the pump body outside of it, and according to the third variant, a protective chute is fixed against the body of pump and the pipe is placed inside the chute.

Cette goulotte peut également recevoir des fils reliés à des contacts d'asservissement de niveau. Ces contacts déterminent un signal qui autorise l'arrêt de fonctionnement ou le redémarrage de la pompe, en fonction du niveau du liquide dans le puits.This chute can also receive wires connected to contacts level servo. These contacts determine a signal that allows shutdown or restart of the pump, depending on the level of the liquid in the well.

La présence d'une goulotte permet également l'insertio d'un tuyau d'un dispositif de détection de niveau fluidique du type « bulle à bulle ».The presence of a chute also allows the insertio of a pipe a fluidic level detection device of the "bubble bubble" type.

L'étagement de plusieurs contacts le long du corps de pompe permet d'engendrer des signaux étagés fournissant à l'opérateur un bilan hydrique du puits, au moment considéré.The staging of several contacts along the pump body allows to generate stepped signals providing the operator with a water balance well, at the moment considered.

L'intérêt majeur du dispositif pneumatique de pompage selon l'invention tient au fait qu'il est totalement antidéflagrant et que, combiné avec plusieurs électrodes correctement implantées à des distances définies le long de la goulotte ou le long du corps de pompe, par exemple à des distances de cinq, dix ou vingt centimètres, il permet aussi d'obtenir, à tout moment, par une lecture périodique ou continue de ces signaux, le niveau et la variation des niveaux du liquide dans le puits ou la fosse.The major interest of the pneumatic pumping device according to the invention is due to the fact that it is totally explosion-proof and that, combined with several electrodes correctly implanted at defined distances along the chute or along the pump body, for example to distances of five, ten or twenty centimeters, it also allows to obtain, at any moment, by periodic or continuous reading of these signals, the level and the variation of liquid levels in the pit or pit.

La description qui suit se reporte aux figures 1 à 4 qui représentent un dispositif de pompage (« la pompe ») selon un mode de réalisation préféré de l'invention, dans quatre étapes successives d'un cycle de pompage.The description which follows refers to FIGS. 1 to 4 which represent a pumping device ("the pump") according to a preferred embodiment of the invention, in four successive stages of a pumping cycle.

La pompe comprend un corps tubulaire 1 constituant un corps de pompe et délimitant une chambre principale 2 cylindrique dans les extrémités amont 3 et aval 4 de laquelle débouchent respectivement un orifice d'entrée 5 et un orifice de sortie 6 pour le liquide à pomper.The pump comprises a tubular body 1 constituting a body of pump and delimiting a cylindrical main chamber 2 in the upstream ends 3 and downstream 4 from which open respectively a inlet port 5 and an outlet port 6 for the liquid to be pumped.

La pompe comprend également une vanne à manchon 7 disposé devant l'orifice d'entrée 5 afin de contrôler le passage du liquide à pomper par cet orifice, des moyens 8 permettant de commander l'ouverture et la fermeture de la vanne à manchon 7 par un gaz comprimé, un tuyau de refoulement 9 traversant l'orifice de sortie 6 et s'étendant à l'intérieur du corps tubulaire sur la plus grande partie de la longueur de ce dernier, et des moyens 10 permettant d'alimenter la chambre principale 2 en gaz comprimé. Le tuyau de refoulement est avantageusement, mais non nécessairement, pourvu d'un clapet anti-retour 18.The pump also comprises a sleeve valve 7 arranged in front of the inlet port 5 to control the passage of the liquid to be pumped through this orifice, means 8 for controlling the opening and the closing of the sleeve valve 7 by a compressed gas, a pipe of discharge 9 passing through the outlet orifice 6 and extending inside the tubular body over most of the length of the latter, and means 10 for supplying the main chamber 2 with gas compressed. The discharge pipe is advantageously, but not necessarily, provided with a non-return valve 18.

Le corps tubulaire 1 est formé par un tube cylindrique de révolution fermé à ses deux extrémités, l'extrémité inférieure et amont 3 et l'extrémité supérieure et aval 4, respectivement par une plaque inférieure 31 et par une plaque supérieure 41, qui délimitent à l'intérieur du corps tubulaire 1 la chambre principale 2.The tubular body 1 is formed by a cylindrical tube of revolution closed at both ends, the lower and upstream end 3 and the end upper and lower 4, respectively by a lower plate 31 and by a upper plate 41, which delimit inside the tubular body 1 the master bedroom 2.

Les plaques 11 et 31 constituent les extrémités amont et aval de la chambre secondaire, pourvues chacune d'une ouverture de passage.The plates 11 and 31 constitute the upstream and downstream ends of the secondary chamber, each provided with a passage opening.

Selon le mode de réalisation représenté sur les figures, la paroi du corps de pompe se prolonge au-delà de la plaque inférieure 31 pour constituer également la paroi extérieure de la vanne à manchon 7.According to the embodiment shown in the figures, the wall of the pump body extends beyond the lower plate 31 for also constitute the outer wall of the sleeve valve 7.

La vanne à manchon 7 comprend, outre la paroi extérieure, une plaque 11 délimitant avec la paroi extérieure et avec la plaque inférieure 31 de la chambre principale 2, une chambre secondaire 12. La plaque 11 est pourvue d'une ouverture de passage 13 par lequel le liquide à pomper entre dans la vanne 7. Le liquide sort ensuite par l'orifice inférieur 5 de la chambre principale 2 qui a, dans le mode de réalisation représenté, la double fonction d'ouverture de passage en sortie de la vanne à manchon 7 et orifice d'entrée de la chambre principale 2.The pinch valve 7 comprises, besides the outer wall, a plate 11 delimiting with the outer wall and with the bottom plate 31 of the main chamber 2, a secondary chamber 12. The plate 11 is provided of a passage opening 13 through which the liquid to be pumped enters the valve 7. The liquid then leaves through the lower hole 5 of the chamber main 2 which has, in the embodiment shown, the dual function opening of passage at the outlet of the sleeve valve 7 and inlet orifice from the master bedroom 2.

Il va sans dire que la vanne à manchon peut être un élément individuel ayant son propre corps tubulaire constitutif de paroi extérieure de la vanne et ayant une plaque supérieure distincte de la plaque 31 et pourvue d'une ouverture de passage constituant la sortie de la vanne 7. Dans cette variante, le diamètre de la paroi extérieure de la vanne peut être différent de celui du corps de pompe.It goes without saying that the sleeve valve can be an individual element having its own tubular body constituting the outer wall of the valve and having a top plate distinct from the plate 31 and provided with a passage opening constituting the outlet of the valve 7. In this variant, the diameter of the outer wall of the valve may be different from that of the pump body.

La vanne à manchon 7 comprend, quelque soit sa configuration, un manchon 14 qui est élastiquement déformable et qui relie les ouvertures amont et aval de la vanne, formant ainsi un canal par lequel le liquide à pomper doit passer pour entrer dans la chambre principale 2 de la pompe. Le manchon 14 sépare par ailleurs hermétiquement le canal de la chambre secondaire, qui entoure le canal.The sleeve valve 7 comprises, whatever its configuration, a sleeve 14 which is elastically deformable and which connects the openings upstream and downstream of the valve, thus forming a channel through which the liquid to pump must pass to enter the main chamber 2 of the pump. The sleeve 14 also separates the chamber from the chamber hermetically secondary, which surrounds the canal.

Le corps de pompe est pourvu, dans sa partie supérieure, de deux orifices 15 et 16 par lesquels passent deux tuyaux d'alimentation en gaz comprimé, référencés 8 et 10.The pump body is provided, in its upper part, with two orifices 15 and 16 through which two gas supply pipes pass tablet, referenced 8 and 10.

Le tuyau d'alimentation 8 est représentatif des moyens permettant de commander l'ouverture et la fermeture de la vanne à manchon 7 par un gaz comprimé, par exemple par de l'air comprimé. Ce tuyau 8 est relié par une de ses extrémités à la chambre secondaire 12 et par l'autre extrémité à un conduit généralement flexible qui, à son tour, est relié à une source de gaz comprimé. Selon le mode de réalisation représenté, le tuyau 8 passe par l'orifice 15 pratiqué dans la plaque supérieure 41 du corps de pompe.The feed pipe 8 is representative of the means for control the opening and closing of the sleeve valve 7 by a gas compressed, for example by compressed air. This pipe 8 is connected by a from its ends to the secondary chamber 12 and the other end to a generally flexible conduit which, in turn, is connected to a gas source compressed. According to the embodiment shown, the pipe 8 passes through the orifice 15 made in the upper plate 41 of the pump body.

Le tuyau d'alimentation 10 est représentatif des moyens permettant d'alimenter en gaz comprimé la chambre principale 2. Ce tuyau 10 est raccordé par une de ses extrémités à l'orifice 16 pratiqué dans la plaque supérieure 41 du corps de pompe et par l'autre extrémité à un conduit généralement flexible qui, à son tour, est relié à une source de gaz comprimé. Cette source de gaz comprimé, par exemple un réservoir d'air comprimé, peut être le même que celui qui alimente la chambre secondaire. Il va sans dire que, dans ce cas, chacun des tuyaux 8 et 10 est relié au réservoir d'air comprimé par des moyens de commande distincts.The supply pipe 10 is representative of the means allowing to supply compressed gas to the main chamber 2. This pipe 10 is connected by one of its ends to the orifice 16 formed in the plate upper 41 of the pump body and the other end to a conduit generally flexible which, in turn, is connected to a gas source compressed. This source of compressed gas, for example an air reservoir compressed, can be the same as the one that feeds the secondary chamber. It goes without saying that, in this case, each of the pipes 8 and 10 is connected to the compressed air tank by separate control means.

Le corps de pompe comprend par ailleurs deux oeilletons 17 soudés sur la plaque supérieure 41 du corps de pompe, pour y fixer, par exemple, une chaíne ou un câble par laquelle, ou lequel, la pompe est manipulée et maintenue dans le puits.The pump body further comprises two welded 17 eyelets on the upper plate 41 of the pump body, to fix, for example, a chain or cable through which, or which, the pump is handled and kept in the well.

Selon une variante du mode de réalisation représenté, la pompe peut être pourvue d'un trépied fixé au corps de pompe, par exemple à hauteur de la plaque 31, au moyen d'un socle soudé sur le corps de pompe. L'espace formé par les pieds du trépied, peut être délimité par une grille à mailles fixée autour du trépied et protégeant la vanne à manchon de l'entrée de plastiques ou d'autres corps éventuels.According to a variant of the embodiment shown, the pump can be equipped with a tripod fixed to the pump casing, for example at a height of the plate 31, by means of a base welded to the pump body. Space formed by the feet of the tripod, can be delimited by a mesh grid fixed around the tripod and protecting the pinch valve from the input of plastics or other potential bodies.

La grille à maille de protection autour du trépied peut être constituée d'une double rangée de mailles de dimensions identiques ou différentes.The protective mesh grid around the tripod can be made a double row of meshes of identical dimensions or different.

Le diamètre des tuyaux d'alimentation en air comprimé et de refoulement du liquide est fonction du débit désiré, et la longueur de ces tuyaux est fonction de la hauteur de relevage du liquide dans le puits.The diameter of compressed air supply pipes and liquid flow is a function of the desired flow rate, and the length of these Pipes are a function of the lift height of the liquid in the well.

Le présent dispositif a les avantages suivants:

  • La pompe est volumétrique: à chaque cycle, l'air comprimé chasse un volume du liquide égal au volume ayant été contenu dans le corps de pompe.
  • Le débit horaire, déterminé par une temporisation intégrée à un dispositif de commande électropneumatique ou pneumatique, monté dans un coffret de commande approprié, est égal au nombre de cycles par heure multiplié par ce volume.
  • Cette pompe n'a qu'une seule pièce mobile et exposée à l'usure: le manchon élastiquement déformable.
  • Cette pompe n'utilise qu'un gaz comprimé tel de l'air comprimé, comme énergie et est donc par nature antidéflagrante.
  • Selon les conditions d'utilisation de la pompe, la pression de l'air dans le corps de pompe peut varier entre un bar et une dizaine de bars.
  • Les pannes sur cette pompe sont très peu nombreuses. Pour protéger la membrane de la vanne à manchon le plus possible contre l'usure, une crépine ou une grille peut être posée devant l'ouverture de passage d'entrée de la vanne.
  • La pompe ne nécessite pas de graissage, ni de presse étoupe, ni de moteur, ni de clapet, ni de flotteur.
  • La pompe est parfaitement étanche ce qui empêche toute pollution.
  • Le remplacement de la membrane déformable est facile.
  • Le prix de cette pompe est faible par rapport aux autres pompes à lixiviat ou liquides pollués.
  • Cette pompe peut véhiculer tout type de liquide, y compris des lixiviats, des liquides pollués, des liquides boueux et des liquides chargés de chlorure.
  • Les dépôts de chlorure dans la pompe n'empêchent pas son fonctionnement.
  • L'entretien de la pompe est simple et peu onéreux.
  • La consommation d'air comprimé est fonction des conditions d'utilisation.
  • La pompe fonctionne en discontinu et peut, grâce à un dispositif d'asservissement de niveau, s'arrêter de fonctionner à un niveau de lixiviat ou de liquides pollués dans le puits.
The present device has the following advantages:
  • The pump is volumetric: at each cycle, the compressed air expels a volume of the liquid equal to the volume that has been contained in the pump body.
  • The hourly flow, determined by a timer integrated into an electropneumatic or pneumatic control device, mounted in a suitable control box, is equal to the number of cycles per hour multiplied by this volume.
  • This pump has only one moving part and exposed to wear: the elastically deformable sleeve.
  • This pump uses only compressed gas such as compressed air as energy and is therefore explosion-proof.
  • Depending on the conditions of use of the pump, the air pressure in the pump housing can vary between one bar and ten bars.
  • The failures on this pump are very few. To protect the diaphragm of the sleeve valve as much as possible against wear, a strainer or grid can be placed in front of the inlet passage opening of the valve.
  • The pump does not require lubrication, gland, motor, valve or float.
  • The pump is perfectly sealed which prevents any pollution.
  • Replacing the deformable membrane is easy.
  • The price of this pump is low compared to other leachate pumps or polluted liquids.
  • This pump can carry any type of liquid, including leachate, polluted liquids, muddy liquids and chloride-laden liquids.
  • The chloride deposits in the pump do not prevent its operation.
  • The maintenance of the pump is simple and inexpensive.
  • The consumption of compressed air depends on the conditions of use.
  • The pump operates in a batch mode and can, thanks to a level control device, stop operating at a leachate level or polluted liquids in the well.

Claims (10)

  1. A pneumatic pumping device of a liquid operating batchwise and immersed, and with compressed gas and that is intended for pumping liquids such as landfill leachates, comprising a tubular body (1) forming a pump body and defining a cylindrical main chamber (2) in the upstream and downstream ends of which respectively emerge an inlet orifice (5) and an outlet orifice (6) for the liquid to be pumped, characterised in that the pneumatic device comprises a sleeve valve (7) arranged in front of the inlet orifice (5) to control the passage of the liquid to be pumped through the said orifice, means (8) for controlling the opening and closure of the sleeve valve with a compressed gas, a delivery pipe (9) passing through the outlet orifice and extending inside the tubular body over the major part of the length thereof, and means (10) for supplying the main chamber with compressed gas.
  2. A device according to claim 1, characterised in that the tubular body (1) consists essentially of a cylindrical tube closed at both its ends, the upstream end and the downstream end, respectively with a lower plate (31) and an upper plate (41), whereas the space between both these plates forms the main chamber (2) of the pumping device, the inlet orifice of the main chamber is placed in the lower section of the tubular body, considered in the position of use of the device according to the invention and the outlet orifice is arranged in the upper section of the tubular body.
  3. A device according to claim 1 or 2, characterised in that the material of the tubular body (1) of the pump is selected so that the body can be protected by an anticorrosion coating, preventing oxidations and chloride deposits.
  4. A device according to one of claims 1 to 3, characterised in that the inlet orifice (5) of the main chamber is situated in the lower plate of the tubular body and the outlet orifice (6) is situated in the upper plate.
  5. A device according to one of claims 1 to 4, characterised in that the sleeve valve (7) is made of a tubular body forming a secondary chamber in the upstream and downstream ends of which emerge, at each of both ends, at least one opening (13, 5) for the passage of the liquid to be pumped, whereas these passage openings are connected together by an elastically liable to be deformed sleeve (14) that constitutes a channel through the liquid to be pumped should flow to enter the main chamber of the pumping device.
  6. A device according to one of claims 1 to 5, characterised in that the tubular body (1) of the pump, the plates (31, 41) and the sleeve valve (7) are made of materials resistant to thick matters, polluted liquids, salted liquids and liquids whose temperatures may be higher than 80°C.
  7. A device according to one of claims 1 to 6, characterised in that the inlet orifice (5) of the main chamber (2) and the sleeve (14) of the sleeve valve are arranged coaxially with respect to the axis of the tubular body.
  8. A device according to one of claims 1 to 6, characterised in that the space (12) surrounding the passage channel of the sleeve valve is connected by a pipe (8) integral with the tubular body, to a compressed gas supply source.
  9. A device according to one of claims 1 to 8, characterised in that the delivery pipe (9) is fitted with a return valve.
  10. A device according to one of claims 1 to 9, characterised in that at least one of the pipes among the delivery pipe (9), the compressed gas supply pipe (10) of the main chamber (2) and the compressed gas supply pipe (15) of the secondary chamber (12), does not protrude from the wall of the pump body.
EP99958249A 1998-12-07 1999-12-06 Leachate and depollution pneumatic pump with sleeve valve Expired - Lifetime EP1137885B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9815389A FR2786822B1 (en) 1998-12-07 1998-12-07 COMPRESSED AIR DEVICE, WORKING IN DISCONTINUOUS, FOR PUMPING DISCHARGE LEXIVIATES OR POLLUTED AND CHARGED LIQUIDS, AND FOR CONTROLLING THE PUMP AT THE LIQUID OR JUICE LEVEL IN THE PUMPING WELL
FR9815389 1998-12-07
PCT/FR1999/003026 WO2000034657A1 (en) 1998-12-07 1999-12-06 Leachate and depollution pneumatic pump with sleeve valve

Publications (2)

Publication Number Publication Date
EP1137885A1 EP1137885A1 (en) 2001-10-04
EP1137885B1 true EP1137885B1 (en) 2003-02-26

Family

ID=9533639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99958249A Expired - Lifetime EP1137885B1 (en) 1998-12-07 1999-12-06 Leachate and depollution pneumatic pump with sleeve valve

Country Status (10)

Country Link
US (1) US6602055B1 (en)
EP (1) EP1137885B1 (en)
AT (1) ATE233371T1 (en)
AU (1) AU763985B2 (en)
CA (1) CA2362710C (en)
DE (1) DE69905607T2 (en)
ES (1) ES2193766T3 (en)
FR (1) FR2786822B1 (en)
WO (1) WO2000034657A1 (en)
ZA (1) ZA200104627B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7316544B2 (en) * 2004-01-23 2008-01-08 Vidrine James D Automatic pneumatic pump
WO2006060465A2 (en) * 2004-12-02 2006-06-08 Sarcos Investments Lc Intelligent sprinkler irrigation system
US7438277B2 (en) * 2004-12-02 2008-10-21 Raytheon Sarcos, Llc Flow force compensated sleeve valve

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR716940A (en) * 1931-05-12 1931-12-30 Liquid lifting device actuated by pressurized fluid
US2486617A (en) * 1946-06-28 1949-11-01 Sochris Dev Company Deep well pump
FR1124528A (en) * 1955-04-05 1956-10-12 Liquid pump running on compressed gas
GB1082014A (en) * 1964-07-14 1967-09-06 Walter Boettner Improvements in or relating to pumps
CH579220A5 (en) * 1975-02-07 1976-08-31 Bless Bauunternehmung Ag Motorless pump for reducing ground water level - has housing with valves for water and compressed air pipes
US4021147A (en) * 1976-04-05 1977-05-03 Brekke Carroll Ellerd Gas pressure driven pump
US4701107A (en) * 1986-04-04 1987-10-20 American Sigma, Inc. Two stage pump sampler
US4704071A (en) * 1986-06-17 1987-11-03 Mccullough Ross M Method and apparatus for pumping liquids
US4802829A (en) * 1987-02-17 1989-02-07 Miller Michael A Solar controlled water well
US5006046A (en) * 1989-09-22 1991-04-09 Buckman William G Method and apparatus for pumping liquid from a well using wellbore pressurized gas
US5186611A (en) * 1990-07-20 1993-02-16 Frandsen Aksel S Pump arrangement for pumping liquid by means of compressed air
US5451144A (en) * 1993-08-18 1995-09-19 French; George F. Air-operated pump
US5411381A (en) * 1994-03-08 1995-05-02 Perrodin; Philip E. Reciprocating pump
AUPO188896A0 (en) * 1996-08-26 1996-09-19 Midwest Training Group Incorporated Pump
US6224343B1 (en) * 1998-08-10 2001-05-01 Kevin L. Newcomer Automated, air-operated bellows pumps for groundwater sampling and other applications
US6352109B1 (en) * 1999-03-16 2002-03-05 William G. Buckman, Sr. Method and apparatus for gas lift system for oil and gas wells

Also Published As

Publication number Publication date
FR2786822B1 (en) 2001-01-19
ES2193766T3 (en) 2003-11-01
DE69905607T2 (en) 2003-12-18
WO2000034657A1 (en) 2000-06-15
AU763985B2 (en) 2003-08-07
ATE233371T1 (en) 2003-03-15
ZA200104627B (en) 2002-09-06
AU1566100A (en) 2000-06-26
CA2362710A1 (en) 2000-06-15
EP1137885A1 (en) 2001-10-04
CA2362710C (en) 2008-06-10
FR2786822A1 (en) 2000-06-09
DE69905607D1 (en) 2003-04-03
US6602055B1 (en) 2003-08-05

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