EP0927826A1 - Système de pompage de liquide - Google Patents
Système de pompage de liquide Download PDFInfo
- Publication number
- EP0927826A1 EP0927826A1 EP98460059A EP98460059A EP0927826A1 EP 0927826 A1 EP0927826 A1 EP 0927826A1 EP 98460059 A EP98460059 A EP 98460059A EP 98460059 A EP98460059 A EP 98460059A EP 0927826 A1 EP0927826 A1 EP 0927826A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- orifice
- liquid
- chamber
- valve
- introduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
- F04F1/02—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped using both positively and negatively pressurised fluid medium, e.g. alternating
Definitions
- the present invention relates to a liquid pumping system.
- Such pumping system can work in pump with various liquids.
- An application such a pumping system can consist of a liquid cannon, such as water, can spray a liquid at a long distance at a controllable rate, for example, to watering crops or as a fire or riot water cannon.
- centrifugal pumps which are coupled to a heat engine.
- the downside of such pumps is that they require relatively high power.
- a centrifugal pump which delivers 1300 liters / minute at a pressure of 12 bars requires engine power thermal which drives it by 120 CV.
- the object of the invention is to propose a pumping system for liquids which allows to considerably reduce this power required for a projection of said liquid, for example in a ratio of 8 to 10.
- a liquid pumping system is characterized in that it consists of a chamber provided with an orifice for introduction into said chamber of a liquid from a source, an orifice for the evacuation of said liquid out from said chamber and from an orifice opposite to said orifice for discharging said liquid to the introduction of gas under pressure, each orifice being provided with a valve, said valves being controlled synchronously in two phases, a first so-called filling phase in which the valve associated with the introduction orifice is open while the other two valves are closed allowing filling of the chamber, and a second phase known as expulsion in which the valve associated with the introduction orifice is closed while the other two valves are open, allowing the introduction of pressurized gas into the chamber through the orifice introduction thus expelling the liquid contained in the chamber through the orifice evacuation.
- said chamber is provided with a vent opposite the liquid introduction orifice, said vent itself being provided a valve which opens and closes at the same time as the valve associated with the orifice liquid introduction.
- said chamber is provided with an orifice connected, via a valve, to a vacuum pump, said valve opening and closing at the same time as the valve associated with the inlet some cash.
- valve associated with the orifice introduction is at the end of said chamber which is provided with the orifice outlet, said vent being at the other end.
- the invention includes means for detection of liquid levels in said chamber, the signals of which are supplied to a control unit designed to be able to control opening and closing of said valves.
- said chamber has, on the side of its discharge orifice, a frustoconical part narrowing towards said orifice evacuation.
- the present invention also relates to a set of pumping systems. conform to a pumping system as just described. According to the invention, it is characterized in that each system is controlled so that the phases of each evacuation system follow one after the other, and that while that of a system is in operation, filling phases are implemented works in other systems.
- the number n of systems of evacuation of said assembly is such that n times the evacuation time corresponds to a filling time.
- the installation shown in FIG. 1 essentially consists of a system pumping device according to the invention 100, a source 20 of a liquid and a pump compression 30 intended to supply a gas under relatively high pressure.
- this gas is air.
- the pumping system 100 visible in this FIG. 1 is essentially made up of a body forming inside it a closed chamber 10, for example but not necessarily cylindrical. Said body 10 is provided with an orifice 11 provided for introducing the liquid from the source 20 into said chamber of the body 10 and an orifice 12 for the evacuation from said chamber of the body 10 of the liquid which it contains. In the embodiment shown, the introduction orifice 11 and the orifice 12 are located in the lower part of the body 10, which has its axis longitudinal which is vertical.
- This body 10 is also provided with an orifice 13 which is opposite to said orifice evacuation of said liquid 12 and which is intended to allow introduction into the body chamber 10 of the high pressure gas supplied by the compression 30.
- the body 10 is also provided with a vent 14 which is opposite to the insertion opening 12.
- the pumping system 100 also includes a valve 15 placed on the pipeline between the source 20 and the introduction orifice 11, a valve 16 placed on the discharge orifice 12, a valve 17 placed on the pipe between the pump 30 and the introduction orifice 13 and a valve 18 placed on the vent 14.
- the valves 15 to 18 are controlled synchronously by means of a control unit 40 which receives moreover, the signals, on the one hand, from a low level detector 42 and, on the other hand, from a high level detector 41.
- the operation of the pumping system 100 according to the invention is as follows.
- a first phase called the filling phase
- the filling phase the filling the chamber of the body 10 with a volume of liquid from the source 20.
- the introduction valve 15 and the vent valve 18 open the introduction valve 15 and the vent valve 18, the valve gas introduction 13 and the discharge valve 16 being closed.
- the resulting liquid of the source 20 enters by gravity into the chamber of the body 10, and this via the orifice 11.
- the filling is done until the liquid reaches the level of high detector 41, which transmits a signal to the control unit 40 which triggers the closing of valves 15 and 18.
- vent 14 is used for the evacuation of the air which is expelled from the chamber of the body 10 by its filling with liquid.
- the valve for introducing gas 17 is open as well as the discharge valve 16. This results in the presence at the surface of the liquid which is opposite to the orifice 12, of a gas pressure given by the pump 30 which has the effect of pressing on this surface and allowing the evacuation of the liquid through port 12. The liquid is expelled and projected in the form of a jet of strong power.
- the second phase begins immediately after the end of the first phase. Consequently, the valves 16 and 17 open immediately. closing of valves 15 and 18.
- the opening of the valve 16 may be slightly delayed by relative to the opening of the valve 17.
- the vent 14 is replaced by an orifice 14 connected, via the valve 18, to a suction pump 50.
- the operation is similar to that of the exemplary embodiment shown in FIG. 1, with the difference that the introduction liquid from the source 20 is no longer made by gravity but by creating a vacuum in the body chamber 10 by means of the suction pump 50.
- detectors 41 and 42 could be replaced by a pressure switch which when the pressure in the body 10 reaches by going up a limit value upper, allows the control of the closing of the valves 15 and 18 and which, when the pressure in the body 10 reached while going down a lower limit value, allows the command to close valves 16 and 17.
- FIG. 3 a body 10 of a pumping system according to the invention with its introduction orifices 11 and 13 and its discharge orifice 12 and its vent (or suction port) 14.
- This body 10 has the particularity of understanding in its lower part, a frustoconical part 10a tightening towards the orifice It was shown that this characteristic was interesting for obtain a fine spray at the end of the jet due to the mixture of water and gas which takes place at the end of evacuation.
- FIG. 4 there is shown an installation with n pumping systems 101 to 10n identical to the first embodiment shown in FIG. 1. It will however be noted that said systems could be identical to the second embodiment of FIG. 2. In this Fig. 4, the valves 15 to 18 of each system 101 to 10n have not been shown for reasons of clarity in FIG. 4.
- the source 20 is therefore connected to the n input inputs 11 of the n pumping systems 101 to 10n, and this via n respective valves 15 (see FIG. 1).
- the compression pump 30 is connected to the n pressurized gas introduction inlets 13 of the n pumping systems 10l to 10n, and this via n respective valves 17 (see FIG. 1) and the n discharge orifices. 12 are connected to an outlet S.
- the vents 14 which are also connected to respective valves 18 (see Fig. 1).
- the control unit 40 controls each system 10i (i which can vary from 1 to n ) in the manner indicated above, that is to say according to two phases, a filling phase I and a discharge phase II , phases which are triggered and interrupted after reception of the level signals from the detectors 41 and 42 of each system 10i.
- the duration of the filling phase I is greater than that of the evacuation phase II.
- the system 101 begins to fill, the system 102 evacuates and the system 103 finishes filling up.
- the system 101 is still filling, the system 102 has finished evacuation and begins to fill and system 103 begins evacuation.
- the system 101 finishes filling up and begins evacuation, system 102 is still filling and system 103 has finished evacuation and begins its filling.
- the evacuation phases II follow one after the other, and that while that of one system is in use, filling phases are implemented in the other systems.
- a number n of systems will be chosen such that n times the duration of the discharge phase II correspond to that of the filling phase I.
- the flow rate at the outlet S is substantially constant.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims (8)
- Système de pompage d'un liquide, caractérisé en ce qu'il est constitué d'une chambre (10) pourvue d'un orifice (11) d'introduction dans ladite chambre (10) d'un liquide issu d'une source (20), d'un orifice (12) pour l'évacuation dudit liquide hors de ladite chambre (10) et d'un orifice (13) opposé audit orifice (12) d'évacuation dudit liquide pour l'introduction de gaz sous pression, chaque orifice (11, 12, 13) étant pourvu d'une vanne (15, 16, 17), lesdites vannes (15, 16, 17) étant commandées de manière synchronisée selon deux phases, une première phase (I) dite de remplissage dans laquelle la vanne (15) associée à l'orifice d'introduction (11) est ouverte alors que les deux autres vannes (16 et 17) sont fermées permettant ainsi le remplissage de la chambre (10), et une seconde phase dite d'expulsion dans laquelle la vanne (15) associée à l'orifice d'introduction (11) est fermée alors que les deux autres vannes (16 et 17) sont ouvertes, permettant l'introduction du gaz sous pression dans la chambre (10) par l'orifice d'introduction (13) expulsant ainsi le liquide contenu dans la chambre (10) par l'orifice d'évacuation (12).
- Système de pompage de liquide selon la revendication 1, caractérisé en ce que ladite chambre (10) est pourvue d'un évent (14) à l'opposé de l'orifice (11) d'introduction du liquide, ledit évent (14) étant lui-même pourvu d'une vanne (18) qui s'ouvre et se ferme en même temps que la vanne (15) associée à l'orifice (11) d'introduction du liquide.
- Système de pompage de liquide selon la revendication 1, caractérisé en ce que ladite chambre (10) est pourvue d'un orifice (14) relié, via une vanne (18), à une pompe à vide (50), ladite vanne (18) s'ouvrant et se fermant en même temps que la vanne (15) associée à l'orifice (11) d'introduction du liquide.
- Système de pompage de liquide selon la revendication 1, 2 ou 3, caractérisé en ce que la vanne (15) associée à l'orifice d'introduction (11) se trouve à l'extrémité de ladite chambre (10) qui est pourvue de l'orifice d'évacuation (12), ledit évent (14) se trouvant à l'autre extrémité.
- Système de pompage de liquide selon une des revendications précédentes, caractérisé en ce qu'il comporte des moyens de détection (41 et 42) de niveaux de liquide dans ladite chambre (10) dont les signaux sont fournis à une unité de commande (40) prévue pour pouvoir commander l'ouverture et la fermeture desdites vannes (15 à 17).
- Système de pompage de liquide selon une des revendications précédentes, caractérisé en ce que ladite chambre (10) présente, côté de son orifice d'évacuation (12), une partie tronconique (10a) se resserrant vers ledit orifice d'évacuation (12).
- Ensemble de systèmes de pompage conformes à un système de pompage selon une des revendications précédentes, caractérisé en ce que chaque système est commandé de manière que les phases d'évacuation (II) de chaque système d'évacuation se suivent les unes après les autres, et que pendant que celle d'un système est en oeuvre, des phases de remplissage (I) sont mises en oeuvre dans les autres systèmes.
- Ensemble selon la revendication 7, caractérisé en ce que le nombre n de systèmes d'évacuation dudit ensemble est tel que n fois la durée de la phase d'évacuation (II) correspondent à celle de phase de remplissage I.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9716884A FR2774728A1 (fr) | 1997-12-31 | 1997-12-31 | Systeme de pulseur pneumatique de liquides pouvant travailler en pompe a divers liquides |
FR9716884 | 1997-12-31 | ||
FR9806130 | 1998-05-11 | ||
FR9806130A FR2774729B1 (fr) | 1997-12-31 | 1998-05-11 | Systeme de pompage de liquide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0927826A1 true EP0927826A1 (fr) | 1999-07-07 |
EP0927826B1 EP0927826B1 (fr) | 2005-03-30 |
Family
ID=26234050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98460059A Expired - Lifetime EP0927826B1 (fr) | 1997-12-31 | 1998-12-18 | Système de pompage de liquide |
Country Status (6)
Country | Link |
---|---|
US (1) | US6213348B1 (fr) |
EP (1) | EP0927826B1 (fr) |
AT (1) | ATE292245T1 (fr) |
DE (1) | DE69829546T2 (fr) |
ES (1) | ES2241109T3 (fr) |
FR (1) | FR2774729B1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6499288B1 (en) | 2001-06-12 | 2002-12-31 | Andrew F. Knight | Pressurizer for a rocket engine |
US7082750B2 (en) * | 2002-08-09 | 2006-08-01 | Knight Andrew F | Pressurizer for a rocket engine |
US7194853B1 (en) | 2001-06-12 | 2007-03-27 | Knight Andrew F | Pressurizer for a rocket engine |
US7007456B2 (en) * | 2002-05-07 | 2006-03-07 | Harrington Steven M | Dual chamber pump and method |
US7611333B1 (en) * | 2002-05-07 | 2009-11-03 | Harrington Steven M | Multiple chamber pump and method |
WO2008079202A1 (fr) * | 2006-12-19 | 2008-07-03 | Lam Research Corporation | Mesure de quantités de fluide, mélange de constituants liquides et distribution de mélanges |
US20170016458A1 (en) * | 2015-07-15 | 2017-01-19 | Materials and Technologies, Corp. | Simple Positive Displacement Pump Suitable for Pharmaceutical, Chemical, Biological, Viscous, Dense, Particulate Laden Fluids and Other Demanding Applications |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6615555A (fr) * | 1966-11-03 | 1968-05-06 | ||
WO1980001937A1 (fr) * | 1979-03-17 | 1980-09-18 | Saarbergwerke Ag | Procede de transfert a haute pression de liquides contenant des matieres solides |
FR2597850A1 (fr) * | 1986-04-28 | 1987-10-30 | Tecalemit Equip | Dispositif de transfert de transfert de liquide |
WO1995018685A1 (fr) * | 1994-01-06 | 1995-07-13 | Ricom Engineering Limited | Appareil de recuperation de liquides |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4274552A (en) * | 1979-03-26 | 1981-06-23 | Coulter Electronics, Inc. | Liquid dispenser |
DE3430934C2 (de) * | 1984-08-22 | 1986-07-03 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Schaltungsanordnung zum geregelten Auffüllen und Nachfüllen von Behältern mit Flüssigkeiten |
GB9021094D0 (en) * | 1990-09-27 | 1990-11-07 | Oxford Glycosystems Ltd | Liquid delivery systems |
US5480063A (en) * | 1993-03-05 | 1996-01-02 | Keyes; Denis E. | Volumetric fluid dispensing apparatus |
US5680960A (en) * | 1993-03-05 | 1997-10-28 | Keyes; Denis E. | Volumetric fluid dispensing apparatus |
US5568882A (en) * | 1995-02-03 | 1996-10-29 | Abc Techcorp | Precise volume fluid dispenser |
-
1998
- 1998-05-11 FR FR9806130A patent/FR2774729B1/fr not_active Expired - Fee Related
- 1998-12-18 EP EP98460059A patent/EP0927826B1/fr not_active Expired - Lifetime
- 1998-12-18 DE DE69829546T patent/DE69829546T2/de not_active Expired - Fee Related
- 1998-12-18 AT AT98460059T patent/ATE292245T1/de not_active IP Right Cessation
- 1998-12-18 ES ES98460059T patent/ES2241109T3/es not_active Expired - Lifetime
- 1998-12-22 US US09/219,094 patent/US6213348B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6615555A (fr) * | 1966-11-03 | 1968-05-06 | ||
WO1980001937A1 (fr) * | 1979-03-17 | 1980-09-18 | Saarbergwerke Ag | Procede de transfert a haute pression de liquides contenant des matieres solides |
FR2597850A1 (fr) * | 1986-04-28 | 1987-10-30 | Tecalemit Equip | Dispositif de transfert de transfert de liquide |
WO1995018685A1 (fr) * | 1994-01-06 | 1995-07-13 | Ricom Engineering Limited | Appareil de recuperation de liquides |
Also Published As
Publication number | Publication date |
---|---|
US6213348B1 (en) | 2001-04-10 |
EP0927826B1 (fr) | 2005-03-30 |
FR2774729B1 (fr) | 2000-03-17 |
DE69829546D1 (de) | 2005-05-04 |
ATE292245T1 (de) | 2005-04-15 |
DE69829546T2 (de) | 2006-05-11 |
ES2241109T3 (es) | 2005-10-16 |
FR2774729A1 (fr) | 1999-08-13 |
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