FR2836703A1 - Double acting multi-stage air oil converter comprises pneumatic chamber associated with hydraulic stages controlled by pneumatic piston and has oil reservoir gravity supplying hydraulic stage through distributor - Google Patents
Double acting multi-stage air oil converter comprises pneumatic chamber associated with hydraulic stages controlled by pneumatic piston and has oil reservoir gravity supplying hydraulic stage through distributor Download PDFInfo
- Publication number
- FR2836703A1 FR2836703A1 FR0202704A FR0202704A FR2836703A1 FR 2836703 A1 FR2836703 A1 FR 2836703A1 FR 0202704 A FR0202704 A FR 0202704A FR 0202704 A FR0202704 A FR 0202704A FR 2836703 A1 FR2836703 A1 FR 2836703A1
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- FR
- France
- Prior art keywords
- hydraulic
- distributor
- stage
- pneumatic chamber
- pneumatic
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- 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.)
- Pending
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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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
- F04B9/129—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers
- F04B9/131—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members
- F04B9/133—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting elastic-fluid motor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
<Desc/Clms Page number 1> <Desc / Clms Page number 1>
La présente invention concerne un convertisseur air-huile à double effet multi-étage destiné à alimenter des actionneurs hydrauliques (vérins, moteurs, pompes... etc... The present invention relates to a multi-stage double-effect air-oil converter intended to supply hydraulic actuators (cylinders, motors, pumps ... etc ...
Traditionnellement, pour obtenir une haute pression hydraulique, on utilise une pompe. Cela est particulièrement le cas lorsqu'il s'agit d'obtenir un volume important. Lorsque le volume nécessaire est limité, il est utilisé soit un multiplicateur de pression à un système de pression, soit à deux systèmes de pression. Quelque soit le cas, chaque système de pression est à simple effet. En outre, ces dispositifs ne peuvent être employés que sur des vérins et ne produisent que de faibles volumes à haute pression. Dans le cas d'une pompe hydraulique, l'installation demande beaucoup d'énergie. Par exemple une pompe hydraulique devant débiter lOOL/mn à 65 bar nécessite un moteur de 15 KW. Le dispositif selon l'invention permet de remédier à ces inconvénients. Il comporte selon une première caractéristique une chambre pneumatique (prévue pour détecteurs magnétiques) double effet accouplé à une chambre hydraulique (étages) double effet de forte section et de faible course (équipé de vis de purge). Le piston de la chambre pneumatique est lié au piston de la chambre hydraulique par un axe qui traverse la cloison étanche qui sépare les deux chambres. Les deux pistons effectuent rigoureusement la même course, alors que leurs sections respectives peuvent être différentes. L'on peut par exemple accoupler une chambre pneumatique de 200 mm de section et une chambre hydraulique de 200, 300,400 mm de section... etc... L'effort généré par le piston pneumatique se transmet intégralement au piston hydraulique qui propulse une quantité de liquide égale au volume de la chambre hydraulique. Cette caractéristique défInit le débit et la force du dispositif. Par exemple, une chambre pneumatique d'une section utile de 250 mm (section de l'axe déduit) et de 50 mm de course accouplé à une chambre hydraulique de même section utile et de même course délivre un volume de 2453 cm3. Si la même chambre pneumatique est associée à deux, trois, quatre, etc... étages hydrauliques, le volume disponible sera multiplié d'autant, alors que la course et la force générée par la chambre pneumatique reste identique. Le volume de liquide disponible du dispositif est donc fonction du nombre d'étages hydrauliques accouplé à la chambre pneumatique et du nombre de cycles (1 cycle = 1 aller + un retour) effectué par minute. Traditionally, to obtain a high hydraulic pressure, a pump is used. This is particularly the case when it comes to obtaining a large volume. When the required volume is limited, it is used either a pressure intensifier to one pressure system, or to two pressure systems. Whatever the case, each pressure system is single acting. In addition, these devices can only be used on cylinders and produce only small volumes at high pressure. In the case of a hydraulic pump, the installation requires a lot of energy. For example, a hydraulic pump which must deliver OOL / min at 65 bar requires a 15 KW motor. The device according to the invention overcomes these drawbacks. According to a first characteristic, it has a double-acting pneumatic chamber (designed for magnetic detectors) coupled to a double-acting hydraulic chamber (stages) of large section and short stroke (equipped with bleed screws). The piston of the pneumatic chamber is linked to the piston of the hydraulic chamber by an axis which crosses the watertight bulkhead which separates the two chambers. The two pistons strictly follow the same stroke, while their respective sections may be different. One can for example couple a pneumatic chamber of 200 mm section and a hydraulic chamber of 200, 300,400 mm section ... etc ... The force generated by the pneumatic piston is transmitted entirely to the hydraulic piston which propels a quantity of liquid equal to the volume of the hydraulic chamber. This characteristic defines the flow and force of the device. For example, a pneumatic chamber with a useful section of 250 mm (section of the axis deducted) and 50 mm of travel coupled to a hydraulic chamber of the same useful section and the same stroke delivers a volume of 2453 cm3. If the same pneumatic chamber is associated with two, three, four, etc. hydraulic stages, the available volume will be multiplied by the same amount, while the stroke and the force generated by the pneumatic chamber remain identical. The volume of liquid available from the device is therefore a function of the number of hydraulic stages coupled to the pneumatic chamber and the number of cycles (1 cycle = 1 return + return) performed per minute.
Dans notre exemple (chambres pneumatique et hydraulique de 250 mm de section utile) si nous associons trois étages hydrauliques à une chambre pneumatique, nous obtenons 7359 cm3 de liquide pour une course de piston de 50 mm, soit 100 mm (aller + retour), soit un volume sur un cycle de 14718 cm3. Ce cycle de 100 mm est effectué en une seconde (0,10 m/s), soit 60 cycles-minute et donc un volume de liquide distribué de 883080 cm3. In our example (pneumatic and hydraulic chambers with a useful section of 250 mm) if we combine three hydraulic stages with a pneumatic chamber, we obtain 7359 cm3 of liquid for a piston stroke of 50 mm, i.e. 100 mm (go + return), or a volume over a cycle of 14,718 cm3. This 100 mm cycle is carried out in one second (0.10 m / s), or 60 cycles per minute and therefore a volume of liquid dispensed of 883,080 cm3.
La force exercée par la chambre pneumatique sous pression de 6 bar est de 2900 daN. The force exerted by the pneumatic chamber under pressure of 6 bar is 2900 daN.
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Sachant que la pression est directement proportionnelle au rapport des sections, si nous appliquons 2900 daN à un vérin de 50 mm de section, nous obtenons sur ce piston une pression de 145 bar. Si nous appliquons les mêmes caractéristiques (force-débit) a un moteur hydraulique de 500 cm3, nous obtenons en continu unevitesse de 1750 tours/mn pour une consommation d'air de 295L/mn sous 6 bar, soit 18 m3/h. Selon une seconde caractéristique, le dispositif est équipé d'un réservoir d'huile qui regroupe le retour des fluides et des fuites. Ce réservoir est disposé au dessus du convertisseur de façon à l'alimenter par gravité. Il est relié aux étages hydrauliques à travers un distributeur 3/2 à commande pneumatique (ou autre) protégé par deux clapets anti-retour de forte section. La fonction de ce distributeur est de distribuer alternativement le liquide dans les étages hydrauliques. Ce distributeur est piloté par le distributeur de la chambre pneumatique. Knowing that the pressure is directly proportional to the ratio of the sections, if we apply 2900 daN to a cylinder of 50 mm of section, we obtain on this piston a pressure of 145 bar. If we apply the same characteristics (force-flow) to a hydraulic motor of 500 cm3, we continuously obtain a speed of 1750 rpm for an air consumption of 295L / min at 6 bar, i.e. 18 m3 / h. According to a second characteristic, the device is equipped with an oil reservoir which combines the return of fluids and leaks. This tank is arranged above the converter so as to feed it by gravity. It is connected to the hydraulic stages through a pneumatically operated 3/2 distributor (or other) protected by two non-return valves of large section. The function of this distributor is to distribute the liquid alternately in the hydraulic stages. This distributor is controlled by the distributor of the pneumatic chamber.
Selon une troisième caractéristique, les sorties haute pression du dispositif destiné à l'alimentation du (ou des) actionneur sont regroupées par sens de sortie des étages haute pression et raccordées sur un (ou plus) sélecteur de circuit. Selon une quatrième caractéristique, le dispositif est capable de s'autoalimenter dans le sens ou compte-tenu de sa faculté à générer de fort volume de liquide sous une faible consommation d'air, il peut alimenter plusieurs moteurs hydrauliques dont l'un sert à l'entraînement d'un compresseur. According to a third characteristic, the high pressure outputs of the device intended for supplying the actuator (s) are grouped by direction of output of the high pressure stages and connected to one (or more) circuit selector. According to a fourth characteristic, the device is capable of self-feeding in the direction or given its ability to generate a large volume of liquid under low air consumption, it can power several hydraulic motors, one of which is used to the drive of a compressor.
Le dispositif est alors complété par un volant d'inertie. Selon des modes particuliers de réalisation, le dispositif peut être à double tige, et actionner par l'extérieur des détecteurs de fin de course. Les étages hydrauliques peuvent être associés à plusieurs chambres pneumatiques (ForceX par nb de chambre). Le distributeur réservoir-échangeur peut être hydraulique ce qui peut éviter l'installation de clapets anti-retour. Le réservoir à huile peut être remplacé par deux réservoirs qui collectent alternativement les fluides et sont mis en pression alternativement par l'intermédiaire d'un piston pneumatique (ou autre) double effet. Ce dispositif de type injection peut permettred'alimenter le convertisseur dans n'importe quelle position. Le (ou les) sélecteurs de circuit peut être remplacé par un (ou plus) distributeur 3/2 ou autre. Chaque étage peut alimenter un actionneur différent. The device is then completed by a flywheel. According to particular embodiments, the device can be with double rod, and actuate from the outside end-of-stroke detectors. The hydraulic stages can be associated with several pneumatic chambers (ForceX per nb of chamber). The tank-exchanger distributor can be hydraulic which can avoid the installation of non-return valves. The oil tank can be replaced by two tanks which alternately collect fluids and are pressurized alternately by means of a double-acting pneumatic (or other) piston. This injection type device can be used to power the converter in any position. The circuit selector (s) can be replaced by one (or more) 3/2 distributor or another. Each stage can supply a different actuator.
Les dessins annexés illustrent l'invention
La figure 1 représente le dispositif, prêt à alimenter un actionneur. La figure 2 représente une variante du dispositif. The accompanying drawings illustrate the invention
Figure 1 shows the device, ready to power an actuator. Figure 2 shows a variant of the device.
En référence à ces dessins, le dispositif comporte une (ou plusieurs) chambre pneumatique (1) associée à un (ou plusieurs) étages hydraulique (2). Cet ensemble est relié à un réservoir hydraulique (3) par l'intermédiaire d'un distributeur (4). With reference to these drawings, the device comprises one (or more) pneumatic chamber (1) associated with one (or more) hydraulic stages (2). This assembly is connected to a hydraulic tank (3) via a distributor (4).
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Les orifices haute pression du dispositif (5-5') et (6-6') sont raccordés par sens de sortie à un (ou plus) sélecteur de circuit. The high pressure ports of the device (5-5 ') and (6-6') are connected by direction of output to one (or more) circuit selector.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0202704A FR2836703A1 (en) | 2002-03-04 | 2002-03-04 | Double acting multi-stage air oil converter comprises pneumatic chamber associated with hydraulic stages controlled by pneumatic piston and has oil reservoir gravity supplying hydraulic stage through distributor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0202704A FR2836703A1 (en) | 2002-03-04 | 2002-03-04 | Double acting multi-stage air oil converter comprises pneumatic chamber associated with hydraulic stages controlled by pneumatic piston and has oil reservoir gravity supplying hydraulic stage through distributor |
Publications (1)
Publication Number | Publication Date |
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FR2836703A1 true FR2836703A1 (en) | 2003-09-05 |
Family
ID=27741418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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FR0202704A Pending FR2836703A1 (en) | 2002-03-04 | 2002-03-04 | Double acting multi-stage air oil converter comprises pneumatic chamber associated with hydraulic stages controlled by pneumatic piston and has oil reservoir gravity supplying hydraulic stage through distributor |
Country Status (1)
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FR (1) | FR2836703A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106640791A (en) * | 2016-12-16 | 2017-05-10 | 中国科学院地质与地球物理研究所 | Split-type multilayer linkage supercharging oil cylinder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1503648A (en) * | 1975-04-23 | 1978-03-15 | Jennings G | Pumping apparatus |
US5863186A (en) * | 1996-10-15 | 1999-01-26 | Green; John S. | Method for compressing gases using a multi-stage hydraulically-driven compressor |
-
2002
- 2002-03-04 FR FR0202704A patent/FR2836703A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1503648A (en) * | 1975-04-23 | 1978-03-15 | Jennings G | Pumping apparatus |
US5863186A (en) * | 1996-10-15 | 1999-01-26 | Green; John S. | Method for compressing gases using a multi-stage hydraulically-driven compressor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106640791A (en) * | 2016-12-16 | 2017-05-10 | 中国科学院地质与地球物理研究所 | Split-type multilayer linkage supercharging oil cylinder |
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