EP2388475A1 - Dispositif de réduction de la pression pour un fluide - Google Patents

Dispositif de réduction de la pression pour un fluide Download PDF

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Publication number
EP2388475A1
EP2388475A1 EP10163460A EP10163460A EP2388475A1 EP 2388475 A1 EP2388475 A1 EP 2388475A1 EP 10163460 A EP10163460 A EP 10163460A EP 10163460 A EP10163460 A EP 10163460A EP 2388475 A1 EP2388475 A1 EP 2388475A1
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EP
European Patent Office
Prior art keywords
pressure
reducing device
fluid
inlet
pressure reducing
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.)
Withdrawn
Application number
EP10163460A
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German (de)
English (en)
Inventor
Jonas Straumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP10163460A priority Critical patent/EP2388475A1/fr
Publication of EP2388475A1 publication Critical patent/EP2388475A1/fr
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/26—Reciprocating-piston liquid engines adapted for special use or combined with apparatus driven thereby
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/001—Reciprocating-piston liquid engines the movement in two directions being obtained by two or more double-acting piston liquid motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/007—Reciprocating-piston liquid engines with single cylinder, double-acting piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/007—Reciprocating-piston liquid engines with single cylinder, double-acting piston
    • F03C1/0073—Reciprocating-piston liquid engines with single cylinder, double-acting piston one side of the double-acting piston being always under the influence of the liquid under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/03—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction
    • F03C1/035—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction one single-acting piston being always under the influence of the liquid under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0447—Controlling
    • F03C1/045—Controlling by using a valve in a system with several pump or motor chambers, wherein the flow path through the chambers can be changed, e.g. series-parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0678—Control
    • F03C1/0681—Control using a valve in a system with several motor chambers, wherein the flow path through the chambers can be changed

Definitions

  • the present invention relates to a pressure reducing device for a fluid according to the preamble of the independent claim.
  • this pressure is typically relatively high (eg natural gas supply: 5 bar to 10 bar, water supply: 2 bar to 10 bar), so that this pressure of the public network on entry is reduced in a building to a pressure reduced from this pressure, so as not to expose piping network and fittings in the building unnecessary dangers and also no increased wear.
  • the WO 2006/053878 A2 suggests the use of a conventional pressure reducing device having a turbine integrated into the pressure reducing device to drive a generator for generating electrical energy.
  • the present invention proposes a pressure reducing device as defined by the features of the independent claim.
  • Advantageous embodiments of the inventive pressure reducing device result from the features of the dependent claims.
  • the pressure reducing device comprises an inlet for the fluid under a first pressure, an outlet for taking off the fluid under a second pressure reduced from the first pressure, and means for generating electrical energy.
  • the inventive pressure reducing device further comprises at least one housing, each having a reciprocable in the housing piston, which divides the interior of the housing in two chambers arranged on both sides of the piston. At least one of the two chambers is provided with a separate inlet valve through which the fluid under the first pressure can pass into the chamber provided with the inlet valve, and wherein the at least one of the two chambers is provided with a separate outlet valve through which the fluid from the provided with the exhaust valve chamber can reach into a memory.
  • the reservoir is connected to the outlet for removal of the fluid under the reduced second pressure.
  • the piston is connected to the means for generating the electrical energy such that the movement of the piston is converted into electrical energy.
  • the fluid passes through the two inlet valves into the respective chamber of the at least one housing and moves the respective piston back or forth. It is always open only one of the two intake valves and one of the two exhaust valves, namely, always the exhaust valve of that chamber is open, the inlet valve is closed at the same time. Thus, a direct penetration of the fluid under the first pressure is prevented via the respective chamber of the pressure reducing device.
  • the rectilinear movement of the piston allows in a technically simple manner, the implementation of the pressure generated during the reduction of kinetic energy of the piston, as will be explained below.
  • the inventive pressure reducing device can be used both for liquids, eg. As water, as well as for gases, eg. As natural gas, are used.
  • the pressure reducing device is advantageously arranged on a roof or in an attic of a building, from where the water can be distributed via the outlet from the reservoir by means of hydrostatic pressure via a pipeline network in the building.
  • the piping network should be specially planned and executed for this purpose, since a supply from above instead of from below takes place.
  • the storage tank should be dimensioned so that there is enough water reserve if at the same time a larger amount of water should be consumed.
  • Household appliances with a direct water connection such as a dishwasher or a washing machine, if they require at least a predetermined pressure in operation, can be connected to the water supply in a conventional manner.
  • the pressure reducing device comprises exactly one housing, wherein the two chambers are each provided with a separate inlet valve and a separate outlet valve.
  • a housing with a single piston makes it possible to produce the pressure reducing device according to the invention with as few parts as possible.
  • the pressure reducing device comprises two housings, wherein only one of the two chambers of the respective housing is provided with a separate inlet valve and a separate outlet valve.
  • the two chambers which are provided with inlet valves and exhaust valves, the exact same volume. This is not the case for exactly one housing with a piston, since the piston has a piston rod described below, resulting in different volumes of the two chambers.
  • the means for generating electricity comprise a generator and the piston or pistons are connected via an associated piston rod, a crankshaft and a gearbox with the generator.
  • the transmission has either a fixed gear ratio to achieve from the movement of the piston for the generator efficient speed range.
  • a Vario transmission with a variable gear ratio can be used to always allow efficient operation of the generator.
  • the pressure reducing device can also be used as a pressure relief valve, which converts the excess pressure into electrical energy.
  • the overpressure can be reduced in a controlled manner.
  • the accumulator is only required when used as a pressure relief valve if the fluid must be disposed of in a controlled manner.
  • a pressure reducer is arranged at the outlet. If the fluid is a gas, the gas enters the respective chamber via the respective inlet valve and moves the piston or pistons back and forth. In the respective chamber, the first pressure is now established, below which the gas is at the inlet into the pressure reducing device. If the inlet valve is now closed and the exhaust valve belonging to the same chamber is opened, the gas spreads in the entire volume of the respective chamber and the accumulator and the pressure decreases. In order to allow removal of the reduced second pressure gas from the reservoir, the pressure in the reservoir must be higher than the second pressure in order to be able to remove gas from the outlet via the pressure reducer.
  • the volume of the reservoir must therefore be planned so that the pressure in the reservoir is higher than the reduced second pressure.
  • the outlet may further include a check valve to prevent, if appropriate, a back flow of the gas into the memory.
  • the pressure reducer may additionally be provided with a controllable, variable opening in order to allow a constant flow velocity of the gas over the entire cycle.
  • the memory to a level sensor or a pressure sensor, which is connected to a control device for controlling the supply of fluid under the first pressure.
  • a control device for controlling the supply of fluid under the first pressure.
  • the fluid is a liquid, for example, a float is used as the filling level sensor, which prevents flooding of the reservoir via the control of the supply of the fluid under the first pressure by means of the control device.
  • the fluid is a gas, then a pressure sensor is used which prevents excessive pressure in the reservoir.
  • the control device prevents as long as necessary, the further supply of fluid under the first pressure.
  • the control device can also be connected to other sensors or actuators. When using a Variogetriebes described above, the controller can control, for example, the variable transmission ratio.
  • the inlet and outlet valves for the respective chamber are designed as electrically operable inlet and outlet valves and connected to the control device for controlling the supply or discharge of the fluid into the respective chamber or from the respective chamber .
  • Electrically operable inlet and outlet valves allow a reliable way to quickly control the supply and the discharge of the fluid into the respective chamber or from the respective chamber.
  • the inlet and outlet valves for the respective chamber are designed as mechanically actuated inlet and outlet valves.
  • the mechanically actuated input and output Exhaust valves are actuatable by the crankshaft.
  • the pressure reducing device further comprises an electrically operable valve for controlling the supply of the first pressurized fluid, which is arranged in the flow direction of the fluid before the mechanically actuatable intake valves and connected to the control means for controlling the supply of the fluid under the first pressure.
  • Mechanically operated inlet and outlet valves allow reliable operation of the valves without electronics.
  • an electrically actuable valve for controlling the supply of the fluid under the first pressure is additionally provided, which is arranged in the flow direction of the fluid in front of the mechanically actuated intake valves, in order to be able to stop the supply of the fluid.
  • the mechanically actuated inlet and outlet valves of the respective chamber are each formed by a single mechanically actuated 3/2-way valve.
  • Mechanically actuated 3/2-way valves make it possible to combine two separate mechanically actuated inlet and outlet valves into one valve. This is a cost effective and easy to maintain way to implement the intake and exhaust valves.
  • Fig. 1 shows a first embodiment of the inventive pressure reducing device 1 for a fluid, the inlet 10 (here in the form of a feed tube) for under a first pressure (eg., Pressure in the public network) standing fluid and an outlet 17 for taking the under Compared to the first pressure reduced second pressurized fluid.
  • the pressure reducing device 1 according to the invention further comprises a housing 11 with a piston 110 which can be moved back and forth in the housing 11 and subdivides the interior of the housing 11 into two chambers 111, 112 arranged on both sides of the piston 110.
  • Each of the two chambers 111, 112 is provided with a separate, electrically actuated Inlet valve 13 is provided, through which the fluid under the first pressure can enter the respective chamber 111, 112, and each with a separate, electrically actuated outlet valve 14, through which the fluid from the respective chamber 111, 112 via a connecting pipe 15 in can reach a memory 16.
  • the reservoir 16 is connected to the outlet 17 for taking out the fluid under the reduced second pressure.
  • the liquid flowing into the respective chamber 111, 112 is below the first pressure, while the liquid is forced out of the other chamber 112, 111 through its outlet valve 14 and reaches the reservoir 16 via the connecting pipe 15.
  • the previously opened electrically actuatable inlet 13 or outlet valves 14 are closed and the previously closed electrically actuatable inlet 13 and outlet valves 14 are opened.
  • the piston 110 is moved in the opposite direction by the liquid now flowing into the other chamber 112, 111. He is about a piston rod 113, a crankshaft 19 and a transmission 18 connected to a generator 12.
  • the movement of the piston 110 drives the crankshaft 19 via the piston rod 113, which drives the generator shaft via the transmission 18. Due to the rotating generator shaft, electrical energy is generated by the generator in a manner known per se (induction). In this way, the movement of the piston 110 is converted into electrical energy.
  • the reservoir 16 includes a level sensor 160 which is connected to a controller 20 for controlling the supply of fluid under the first pressure.
  • the controller 20 is also connected to and controls the electrically operable one-13 and exhaust valves 14. If the fluid is a liquid, for example, a float is used as the filling level sensor 160, which prevents flooding of the reservoir 16 by controlling the supply of the liquid under the first pressure by means of the control device 20. For this purpose, both electrically actuated intake valves 13 are closed.
  • the memory 16 is empty during startup of the pressure reducing device 1 or filled with air. It comprises a vent opening 161, so that when filling the reservoir 16 with liquid, the air contained in the memory 16 can escape via the vent opening 161.
  • the reservoir 16 When the pressure reducing device 1 is put into operation, the reservoir 16 is filled with liquid until the level sensor 160 signals a memory 16 filled to a predefined level to the control device 20. Now, both inlet valves 13 are closed to prevent overflow of the memory 16. If the level drops below a predetermined value (after removal of liquid from the reservoir 16), the electrically actuatable inlet and outlet valves 13 14 so controlled that the memory 16 is replenished. It may also be that immediately upon removal of liquid from the memory 16, the level sensor of the control device 20 transmits a corresponding signal which controls the inlet 13 and outlet valves 14 again so that the memory 16 is replenished immediately.
  • the memory 16 is advantageously arranged on a roof or in an attic of a building, from where the liquid, for.
  • the pipeline network should be specially planned and executed for this, since a supply from above takes place instead of as usual from below.
  • the hydrostatic pressure results from the density of the liquid and the height of the liquid column in the memory 16, and the height difference between the extraction point in the building and the outlet 17 of the memory 16.
  • the hydrostatic pressure in the memory 16 is correspondingly greater or smaller.
  • a larger volume of the memory 16 allows (at the same height of the memory 16) that at a liquid removal, the hydrostatic pressure of the liquid in the memory 16 does not collapse too quickly, z. B. if multiple sampling points in the building simultaneously remove liquid from the memory 16.
  • the gas passes via the inlet 10 and via the open electrically actuated inlet valve 13 into the relevant chamber 111, 112.
  • the gas flowing into the relevant chamber 111, 112 moves the piston 110 in the direction of the opened outlet valve 14 of the respective other chamber 112, 111 to. It stands in the respective Chamber 111, 112 flowing gas under the first pressure, while the gas from the other chamber 112, 111 is forced out through the outlet valve 14 and passes through the connecting pipe 15 in the memory 16.
  • the memory 16 comprises a pressure sensor 160 in order to prevent an excessively high pressure in the memory 16 via the control device 20.
  • both electrically actuated intake valves 13 are closed.
  • the memory 16 is empty during startup of the pressure reducing device 1 or filled with air. Thus, a gas / air mixture forms during the first cycles, which should be removed in a controlled manner.
  • the reservoir 16 is sealed and does not include a vent.
  • the pressure reducing device 1 is put into operation, the reservoir 16 is filled with gas until the pressure sensor 160 signals a memory 16 filled up to a predefined pressure to the control device 20.
  • both intake valves 13 are closed to prevent overpressure of the accumulator 16.
  • a pressure reducer 170 is arranged, which reduces the pressure prevailing in the memory 16 to the desired second pressure for the removal of the gas from the memory 16.
  • Fig. 2 shows a second embodiment of the inventive pressure reducing device 200.
  • the basic structure differs only slightly from the in Fig. 1 For this purpose, reference is made to the above description. Differences, however, affect the intake and exhaust valves and the crankshaft.
  • the pressure reducing device 200 comprises for the respective chamber 111, 112 mechanically actuated input 213 and exhaust valves 214.
  • the mechanically actuated input 213 and exhaust valves 214 are each formed by a single mechanically actuated 3/2-way valve 215, which from a crankshaft 219 with Cam 222 is actuated.
  • the cams 222 are mounted on the crankshaft 219 so as to actuate the mechanically operable 3/2-way valves 215, depending on the position of the crankshaft 219.
  • the 3/2-way valve 215 works analogous to a switch, so that in each case one of the two chambers 111, 112 is connected to the inlet. Both 3/2-way valves 215 are driven alternately, so that in each case one of the two chambers 111, 112 connected to the inlet 10 and the other of the two chambers 112, 111 to the memory 16. Since one of the two mechanically operable 3/2-way valves 215 is always open with respect to the inlet 10 but can never both be closed at the same time, the pressure reducing device 200 additionally comprises an electrically operable valve 221 for controlling the supply of the first pressure Fluids to stop the supply of fluid. The electrically actuable valve 221 is disposed in front of the mechanically operable inlet valves 213, viewed in the direction of flow of the fluid, and connected to the control means 20 for controlling the supply of the first pressurized fluid.
  • Fig. 3 shows a third embodiment of the inventive pressure reducing device 300.
  • the basic structure differs only slightly from the in Fig. 1 and Fig. 2 shown pressure reducing device 1, 200. It is hereby made to the above description. Differences, however, affect the intake and exhaust valves and the crankshaft.
  • the mechanically operable inlet 313 and outlet 314 of the respective chamber 111, 112 are each formed by a single mechanically actuated 3/2-way valve 315, which is actuated by a crankshaft 319 with cam 322.
  • the cams 322 are arranged on the crankshaft 319 such that, depending on the position of the crankshaft 319, they actuate the mechanically actuatable 3/2-way valves 315.
  • the respective chamber 111, 112 is connected to the respective 3/2-way valves 315 via only one connecting pipe. Both 3/2-way valves 315 are also connected to the inlet 10 and over the connecting pipe 15 is connected to the reservoir 16.
  • the 3/2-way valve 315 operates analogous to a switch, so that either the inlet 10 or the memory 16 with the respective chamber 111, 112 is connected. Both 3/2-way valves 315 are controlled alternately, so that in each case one of the two chambers 111, 112 connected to the inlet 10 and the other of the two chambers 112, 111 to the memory 16.
  • the pressure-reducing device 300 further includes an electrically operable valve 321 for controlling the supply of the first-pressure fluid to stop the supply of the fluid to be able to.
  • the electrically actuable valve 321 is arranged in the direction of flow of the fluid in front of the mechanically operable 3/2-way valves 315 and connected to the control device 20 for controlling the supply of the fluid under the first pressure.
  • Fig. 4 shows a fourth embodiment of the novel pressure reducing 400.
  • the basic structure differs only slightly from the in Fig. 1 For this purpose, reference is made to the above description. Differences, however, concern the number of housings and pistons as well as the crankshaft.
  • the pressure reducing device 400 comprises two housings 421 each having a piston 422 which can be moved back and forth in the housing 421 and which divides the interior of the housing 421 into two chambers 423, 424 arranged on both sides of the piston 422.
  • one 423 of the two chambers 423, 424 is provided with a separate, electrically actuatable inlet valve 413, through which the fluid under the first pressure can enter the respective chamber 423, as well as with in each case a separate, electrically operable outlet valve 414, through which the fluid from the respective chamber 423 can reach the memory 16 via the connecting pipe 15.
  • the pistons 422 are each connected via an associated piston rod 113 with a common crankshaft 419, wherein the piston rods 133 offset by 180 ° to the crankshaft 419 are arranged.
  • Fig. 5 shows a fifth embodiment of the novel pressure reducing 500.
  • the basic structure differs only slightly from the in Fig. 4 shown pressure reducing device 400. Reference is made to the above description for this purpose. Differences, however, affect the intake and exhaust valves and the crankshaft.
  • the mechanically actuatable input 513 and exhaust valves 514 of the respective chamber 423 are each formed by a single mechanically operable 3/2-way valve 515, which is actuated by a crankshaft 519 with cam 532.
  • the cams 532 are arranged on the crankshaft 519 such that, depending on the position of the crankshaft 519, they actuate the mechanically actuatable 3/2-way valves 515.
  • the respective chamber 423 is connected via only one connecting pipe with the respective 3/2-way valves 515. Both 3/2-way valves 515 are also connected to the inlet 10 and via the connecting tube 15 to the memory 16.
  • the 3/2-way valve 515 operates analogous to a switch, so that either the inlet 10 or the memory 16 is connected to the respective chamber 423. Both 3/2-way valves 515 are driven alternately, so that in each case one of the two chambers 423 is connected to the inlet 10 and the other of the two chambers 423 is connected to the reservoir 16.
  • the pressure-reducing device 500 further includes an electrically operable valve 531 for controlling the supply of the first-pressure fluid to stop the supply of the fluid to be able to.
  • the electrically actuable valve 531 is viewed in the flow direction of the fluid before the mechanically actuated 3/2-way valves 515th arranged and connected to the control device 20 for controlling the supply of fluid under the first pressure.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Pressure (AREA)
EP10163460A 2010-05-20 2010-05-20 Dispositif de réduction de la pression pour un fluide Withdrawn EP2388475A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10163460A EP2388475A1 (fr) 2010-05-20 2010-05-20 Dispositif de réduction de la pression pour un fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10163460A EP2388475A1 (fr) 2010-05-20 2010-05-20 Dispositif de réduction de la pression pour un fluide

Publications (1)

Publication Number Publication Date
EP2388475A1 true EP2388475A1 (fr) 2011-11-23

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ID=42829319

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EP10163460A Withdrawn EP2388475A1 (fr) 2010-05-20 2010-05-20 Dispositif de réduction de la pression pour un fluide

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EP (1) EP2388475A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173039A (en) * 1960-07-06 1965-03-09 Citroen Sa Andre Driving systems for electric generators
WO1994007028A1 (fr) * 1992-09-22 1994-03-31 Linton Raeburn John Unite motrice
US5819635A (en) * 1996-12-19 1998-10-13 Moonen; Raymond J. Hydraulic-pneumatic motor
US20060082159A1 (en) 2004-10-18 2006-04-20 Scharfspitz Jason S Rentricity Flow-to-Wire and RenFlow information services
WO2006055978A1 (fr) * 2004-11-22 2006-05-26 Bosch Rexroth Corporation Systeme d'entrainement hybride hydro-electrique pour automobile
WO2006053878A2 (fr) 2004-11-16 2006-05-26 Armando Carravetta Systeme de soupape de commande de pression aval pour la production d'energie
US20070074509A1 (en) * 2005-09-30 2007-04-05 Caterpillar Inc. Hydraulic system for recovering potential energy
WO2008012587A2 (fr) * 2006-07-27 2008-01-31 Artemis Intelligent Power Ltd Système et dispositif de modulation de couple de pompe/moteur hydraulique numérique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173039A (en) * 1960-07-06 1965-03-09 Citroen Sa Andre Driving systems for electric generators
WO1994007028A1 (fr) * 1992-09-22 1994-03-31 Linton Raeburn John Unite motrice
US5819635A (en) * 1996-12-19 1998-10-13 Moonen; Raymond J. Hydraulic-pneumatic motor
US20060082159A1 (en) 2004-10-18 2006-04-20 Scharfspitz Jason S Rentricity Flow-to-Wire and RenFlow information services
WO2006053878A2 (fr) 2004-11-16 2006-05-26 Armando Carravetta Systeme de soupape de commande de pression aval pour la production d'energie
WO2006055978A1 (fr) * 2004-11-22 2006-05-26 Bosch Rexroth Corporation Systeme d'entrainement hybride hydro-electrique pour automobile
US20070074509A1 (en) * 2005-09-30 2007-04-05 Caterpillar Inc. Hydraulic system for recovering potential energy
WO2008012587A2 (fr) * 2006-07-27 2008-01-31 Artemis Intelligent Power Ltd Système et dispositif de modulation de couple de pompe/moteur hydraulique numérique

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