EP3047156A1 - Dispositif a commande hydraulique a consommation energetique optimisee - Google Patents
Dispositif a commande hydraulique a consommation energetique optimiseeInfo
- Publication number
- EP3047156A1 EP3047156A1 EP14767013.7A EP14767013A EP3047156A1 EP 3047156 A1 EP3047156 A1 EP 3047156A1 EP 14767013 A EP14767013 A EP 14767013A EP 3047156 A1 EP3047156 A1 EP 3047156A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- hydraulic
- piston
- hydraulic pump
- pump
- 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- Withdrawn
Links
- 238000005265 energy consumption Methods 0.000 title description 7
- 239000012530 fluid Substances 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 11
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 230000001965 increasing effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 description 17
- 238000007906 compression Methods 0.000 description 17
- 239000011343 solid material Substances 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- 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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
- F04B7/045—Two pistons coacting within one cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/625—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
- F15B2211/7054—Having equal piston areas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/77—Control of direction of movement of the output member
- F15B2211/7725—Control of direction of movement of the output member with automatic reciprocation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Definitions
- the present invention relates to a hydraulic control device with optimized energy consumption.
- an aggregate transfer device using a hydraulic slide type volumetric transfer pump is an example of a hydraulically controlled device whose energy consumption can be reduced.
- Hydraulic lifts are also an example of a hydraulically controlled device whose consumption can be reduced. Indeed, they have a very high energy consumption which limits their development.
- the object of the present invention is achieved by a hydraulically controlled device having a cyclic operation, in which energy storage is made which, over one cycle, smooths the installed power to the average power with an adaptation to the kinetics. of variation of the efforts.
- Energy storage is on the one hand a potential storage, by means of a hydraulic accumulator for cycle phases with constant effort, and secondly an inertial storage, by a flywheel, for cycle phases with variable effort.
- the installed power is minimized by reducing it to the average power.
- means are provided for intermediate storage of energy produced during an operating phase, the recovered energy being stored appropriately.
- the control implements one or more cylinders.
- the cylinder or cylinders are used as hydraulic pump.
- the jack or cylinders are assisted by the main pump, to charge the battery, which further optimizes the energy recovery.
- the pump is assisted by the flywheel.
- the present invention applies to any hydraulic control cyclic system. It is particularly suitable for the production of a granular material transfer pump, the production of hydraulic goods lifts, etc. and more generally to any hydraulic system with cyclic operation in which, during a phase, the cylinder exerts a force and, in another phase, the cylinder receives a force.
- the present invention also relates to a cyclically operating hydraulic control device comprising a first double-acting cylinder adapted to apply a force in a first direction on an outer element in a first phase of operation, and receiving a force in a second opposite direction in the first direction in a second phase of operation, a hydraulic pump, a flywheel coupled to the hydraulic pump so as to load during the operation of the hydraulic pump, a hydraulic accumulator, a reservoir of hydraulic fluid, the first cylinder comprising a first actuating piston adapted to slide in a sealed manner in a housing and delimiting in said housing a first actuating chamber and a first return chamber, a first connection between the first actuating chamber and the hydraulic pump, a second connection between the first actuating chamber and the accumulator hydraulic, a third connection between the hydraulic pump and the hydraulic fluid reservoir, a fourth connection between the hydraulic pump and the hydraulic accumulator, a fifth connection between the first return chamber and the hydraulic fluid reservoir, and control means of said hydraulic pump and said first, second, third, fourth
- the present invention also relates to a cyclically operating piston transfer pump device for transferring a granular material between an intake chamber and an exhaust chamber, said device comprising a jacket, in which are able to slide a first and a second piston sealingly, said first and second pistons delimiting therebetween a transfer chamber, said transfer jacket having an intake port in communication with the intake chamber, and an exhaust port in communication with the exhaust chamber, the pressure in the exhaust chamber being greater than that in the intake chamber, said first piston being adapted to seal the inlet port tightly and the second piston being able to close the inlet; exhaust port sealingly, said device having a first double acting cylinder for moving the first piece of ston in a first direction and in a second direction opposite to the first direction and a second double-acting cylinder adapted to move the second piston in the first direction and the second direction, said device comprising a hydraulic pump, a flywheel coupled to the hydraulic pump so as to load during a part of the operation of the hydraulic pump, a hydraulic accumulator, a hydraulic fluid reservoir.
- the first double-acting cylinder comprises a first actuating piston adapted to slide in a sealed manner in a first housing and defining in said first housing a first actuating chamber and a first return chamber.
- the second double-acting cylinder comprising a second actuating piston capable of sliding sealingly in a second housing and defining in said second housing a second actuating chamber and a second return chamber.
- the device comprises a first connection between the first operating chamber and the hydraulic pump, a second connection between the first operating chamber and the hydraulic accumulator, a third connection between the hydraulic pump and the hydraulic fluid reservoir, a fourth connection between the hydraulic pump and the accumulator, a fifth connection between the second actuating chamber and the hydraulic pump, a sixth connection between the second actuating chamber and the hydraulic accumulator, a seventh connection between the second chamber of actuation and the first actuating chamber.
- the device also comprises means for controlling the pump and said first, second, third, fourth, fifth, sixth and seventh connections so that during a first phase, the first piston is in a position such that the orifice intake is open and the second piston and in a position such that the exhaust port is closed, in a second phase the hydraulic pump feeds the first actuating chamber, the first piston being moved in the first closing direction the inlet orifice, the pressure in the transfer chamber increasing, during a third actuation phase, the second actuating chamber feeds the first actuating chamber, the first and the second piston being displaced in the first direction of actuation so that the exhaust port opens, during a fourth actuation phase the hydraulic pump feeds the second actuating chamber and has hydraulic accumulator assists the hydraulic pump, the second piston being moved in the second direction so as to close the exhaust port, in a fifth actuation phase, the first actuating chamber charges the hydraulic accumulator, the first piston being moved in the second direction and in a sixth actuation phase, the hydraulic pump feeds the first return chamber
- control means are such that, during the third phase, the hydraulic pump supplies the second return chamber.
- the sixth connection can be made through the hydraulic pump.
- the hydraulic accumulator is at almost constant pressure.
- the hydraulic accumulator is for example gas-filled and has a volume variation of the hydraulic fluid of the order of 1% relative to the volume of gas.
- the hydraulic pump assists the return chamber of the first cylinder.
- the hydraulic pump is preferably assisted by the flywheel.
- the rotational presence variations of the flywheel are advantageously limited to +/- 2%.
- (VR2) can be double rod.
- the outer element is for example formed by a load transport platform.
- the present invention also relates to a hydraulic lift comprising a device according to the invention, and wherein the outer member is formed by an elevator car.
- FIGS. 1A to 1F are diagrammatic representations of a hydraulically controlled granulator transfer pump device embodying the present invention in different stages of operation
- FIGS. 2A to 2E are synthetic representations of the different operating stages of FIGS. 1A to 1F,
- FIG. 3 is a schematic representation of a double-acting jack implemented in the present invention
- FIG. 4 is a schematic representation of the hydraulic circuit of the device of FIGS. 1A to 1F
- - Figure 5 is a schematic representation of a single cylinder hydraulic control device implementing the invention.
- FIGS. 1A to 1F a piston type transfer pump device embodying the invention can be seen. This device is intended for the transfer of granular solid material between two chambers under different pressure.
- the term "granular” designates the fact that the solid material to be transferred is in the form of particles or grains, of variable or non-variable granulometry and of submillimetric dimensions, millimeter or centimeter and can be more or less mixed with a liquid.
- the granular solid material may be biomass, i.e. any inhomogeneous material of biological origin, which may be quasi-dry, such as sawmill residues or straw, or soaked with water as household waste.
- biomass i.e. any inhomogeneous material of biological origin, which may be quasi-dry, such as sawmill residues or straw, or soaked with water as household waste.
- Variable grain size, transport is problematic.
- the solid particles of biomass are powders or chips, for example cellulosic particles, such as fine chips of plants, such as wood.
- the transfer device 1 makes it possible to transfer solid matter in granular form, such as biomass whose particles are of variable particle size, from an inlet chamber 5 at atmospheric pressure to a cha exhaust manifold 6 under a pressure for example of the order of 30 bars.
- This exhaust chamber 6 for example directly forms a feed chamber of a gasification reactor or is connected to a separate system for feeding the reactor, such as a worm system.
- the device 1 firstly comprises a casing formed by a tubular liner 2 pierced with two orifices 20, 21 of which one inlet 20 is in communication with the inlet chamber 5 and the Another exhaust 21 is in communication with the exhaust chamber 6.
- the liner 2 further comprises a third orifice, said balancing orifice 22 whose function will be explained below.
- the inlet port 20 and the balancing port 22 are diametrically opposed to the exhaust port 21.
- the balancing port 22 is opposite the exhaust port 21, and more precisely to the right of the edge of the exhaust port 21 closest to the intake.
- the liner 2 can advantageously be made of hard chromium-plated stainless steel internally.
- pistons 3, 4 are head to tail, that is to say with their respective compression surface 30, 40 facing one another.
- the two pistons 3, 4 are mechanically independent and move during a whole operating cycle in the same direction, that is to say along the same axis of sliding, as shown in Figures 1A to 1F.
- the identical pistons 3, 4 may advantageously be made of hard chromium light alloy.
- the intake piston 3 is able to move between its extreme open position in which it releases at least partially the inlet orifice 20 and its extreme closed position in which it closes the inlet orifice 20 while leaving at least partially the exhaust port 21 cleared.
- the intake piston completely clears the intake port in its extreme open position ( Figure 1A) and has reached the edge of the exhaust port in its extreme closed position. ( Figure 1D).
- open orifice it is meant that fluid communication is established between the orifice and the inside 8 of the jacket 2.
- the exhaust piston 4 in turn is able to move between its extreme closed position in which it closes the exhaust port 21 while leaving the intake port 20 clear and an extreme open position in which it at least partially disengages the exhaust port 20.
- the exhaust piston 4 closes the port of exhaust 21 being in the immediate vicinity of its edge closest to the intake 20 in its extreme closed position ( Figure 1A) and it completely releases the exhaust port 21 being in the immediate vicinity of its furthest edge of the admission 20 in its extreme open position ( Figure 1D).
- segments 7 are provided at the periphery at the end of the pistons, that is to say placed at the periphery of the pistons and near the respective compression surface 30, 40, to ensure the axial seal: they are thus in permanent contact with the inner surface of the liner 2 during the sliding pistons 3, 4.
- All segments 7 are preferably identical to each other and self-lubricating type. These are advantageously metal segments with Bronze, such as Ferro-bronze and preferably of toric form.
- pistons 3, 4 are threaded internally at their bottom 31, 41 to receive by screwing their not shown movement rod.
- the intake piston 3 and the exhaust piston 4 are each displaced by means of a double-acting cylinder VR1, VR2 respectively.
- the cylinder VR1 is shown schematically in FIG. 3.
- the cylinder VR2 is of similar construction to that of the cylinder VR1.
- the cylinders are double rod. These cylinders allow to symmetrize the operation and simplify the transmission of energy.
- the cylinder VR1 comprises a piston 72 mounted to slide sealingly between two chambers, an actuating chamber CA1 and a return chamber CRI, each of the chambers being connected to a hydraulic pump and a hydraulic fluid reservoir, valves are provided to ensure one or the other of the connections.
- a displacement rod 74 is fixed at one longitudinal end to the piston 72 and another longitudinal end of the rod 74 is fixed to the intake piston 3 by means of the tapping formed in the bottom 31.
- a double-acting cylinder displacement rod VR2 is connected to the exhaust piston 4.
- the two cylinders VR1 and VR2 are preferably connected to the same hydraulic pump and the same hydraulic fluid reservoir. But a hydraulic control comprising two hydraulic pumps each connected to a cylinder is not beyond the scope of the present invention.
- FIG. 4 a hydraulic diagram of an example of a control according to the invention can be seen.
- the control comprises the cylinder VR1, the cylinder VR2, the hydraulic pump P, the tank R commonly called “tarpaulin” and the hydraulic accumulator ACC.
- Controllable valves VI to V12 are provided and are switched to modify the connections between the different elements of the control.
- the actuating chamber CA1 of the cylinder VR1 is connected to the inlet of the pump P, to the outlet of the pump P, to the accumulator ACC and to the reservoir.
- the return chamber CRI of the cylinder VR1 is connected to the output of the pump P and to the tank R.
- the actuating chamber CA2 of the cylinder VR2 is connected to the output of the pump P and to the actuating chamber of the cylinder VR1.
- the return chamber CR2 of the cylinder VR2 is connected to the output of the pump P and to the tank R.
- variable volume chamber 8 serving both as a gas inlet chamber and a granular solid material from the inlet chamber 5. , compressing the gas up to the pressure of the exhaust 6, and the exhaust chamber of the compressed gas and the granular solid material to the exhaust chamber 6.
- This variable volume chamber 8 is called the compression chamber .
- the fluid communication between the inlet chamber 5 and the compression chamber 8, when the inlet port is cleared, is provided by an intake hopper 50.
- the communication between the compression chamber 8 and the exhaust chamber 6 is provided by an exhaust hopper 60.
- these hoppers 50, 60 each form a tubing 51, 61 adapted to fit around the tubular liner.
- the exhaust manifold 61 internally delimits a fourth chamber 62, said balancing chamber, in fluid communication with the balancing orifice 22 when moved around the tubular liner 2.
- a sealing for example by means of ring-type seals 70 and block them axially along the tubular liner 2, preferably by needle screws not shown.
- the hoppers 50, 60 and tubes 51, 61 are preferably made of stainless steel.
- the device according to the invention 1 is in horizontal configuration installed, that is to say with the tubular liner 2 arranged substantially to the horizontal, the hoppers 50, 60 arranged substantially vertically with the inlet port 20 upwards and the exhaust port 21 downwards.
- Such a configuration of the device according to the invention 1 allows gravity flow of the granular solid material both at the inlet, that is to say between the inlet chamber 5 and the compression chamber 8, and at the exhaust, that is to say between the compression chamber 8 and the exhaust chamber 6.
- the installation comprises means for storing potential energy, produced by the intake piston 3 during expansion of the intake piston, after closure of the exhaust port 21.
- These storage means are formed by a hydraulic accumulator. Preferably it is a constant pressure accumulator.
- it is a hydraulic accumulator gas sky.
- the charge thereof is assisted by the hydraulic pump to obtain a constant pressure load.
- the volume of hydraulic fluid passing through the accumulator at each cycle is low, for example of the order of 1%, in front of the volume of pressurization gas of the accumulator, which makes it possible to optimize the recovery of energy and the constancy of the pressure.
- a flywheel (not shown) is mounted on the pump shaft, this flywheel storing energy during the entire period of time. operation of the hydraulic pump except when the accumulator is running, during which it releases its energy to assist the hydraulic pump and to allow charging at constant pressure of the accumulator.
- the flywheel is at a constant or quasi-constant frequency, the rotational frequency variations of the flywheel being limited to +/- 2%.
- a controllable hydraulic connection C1 between the actuating chamber CA2 of the cylinder VR2 actuating the exhaust piston 4 and the actuating chamber CA1 of the cylinder VR1 actuating the intake piston 3 is provided.
- FIGS. 1A to 1F and 2A to 2E The steps of an operating cycle of the device 1 according to the invention will now be explained with FIGS. 1A to 1F and 2A to 2E.
- the compression chamber 8 is loaded with granular material. Valves VI and V2 are open, the other valves are closed. Pistons 3 and 4 are immobile. The intake piston 3 is in its extreme open position, and the exhaust piston 4 is in its extreme closed position and the granular solid material flows by gravity from the inlet chamber 5 into the chamber compression 8 inside the tubular liner 2 ( Figure 1A). The pressure of the compression chamber 8 is then equal to that of the inlet chamber 5, substantially the atmospheric pressure.
- the actuating chamber cAl of the jack C1 is supplied by the hydraulic pump and the return chamber is connected to the tank R, which causes the displacement of the intake piston. 3 to the exhaust piston 4 which is held in its extreme closed position.
- the intake piston 3 closes initially the intake port
- valves VI, V4 and V8 are open, the other valves are closed.
- the exhaust piston 4 moves under the effect of the pressure in the compression chamber 8, moving the piston of the cylinder VR2 in the direction of reduction of the volume of the actuating chamber CA2 of the cylinder VR2, which has the effect of increasing the pressure in the chamber actuator CA2 of cylinder VR2.
- This pressurized fluid is transmitted to the actuating chamber CA1 of the jack VR1 via the connection C1.
- This pressurized fluid displaces the piston of the jack VR1 in the direction of the forward movement of the intake piston 3.
- the pump supplies the return chamber CR2 of the cylinder VR2 to compensate the pressure drops and to provide a sufficient pressure for the displacement of the intake piston 3.
- the exhaust piston 4 is moved so as to close the exhaust port 21; the actuating chamber CA2 of the cylinder VR2 is supplied by the hydraulic accumulator ACC with the assistance of the pump P.
- the return chamber CR2 of the cylinder VR2 is connected to the reservoir.
- This displacement of the exhaust cylinder 6 has the effect of closing the exhaust port and compressing the gas in the compression chamber 8, the intake piston 3 being immobilized.
- the valves V3, V9 and V12 are open and the other valves are closed ( Figure 2C).
- the intake piston 3 is released, and is displaced under the effect of the pressure in the compression chamber 8, which has the effect of displacing the piston of the cylinder VR1 in the compression direction of the actuating chamber CA1.
- the pressurized fluid is transmitted to the ACC hydraulic accumulator.
- the return chamber CRI of the cylinder VR1 is supplied by the pump to assist the charging of the accumulator ACC at constant or quasi-constant pressure.
- the flywheel releases the stored energy.
- the energy stored in the ACC accumulator will be consumed in a next phase when the exhaust piston returns.
- Valves VI, V5 and V6 are open, the other valves are closed.
- the return chamber CRI of the cylinder VR1 is fed by the pump P to return the intake piston 3 to the extreme open position and to allow a loading of material granular of the compression chamber 8.
- the valves VI, V5, V7 are open, the other valves are closed.
- the theoretical peak power is, for example, 16.15 kW then that the average power output of the exhaust piston is zero, its cycle being reversible, and that of the intake piston is 807 W.
- the energy spent on a cycle to close the exhaust by the exhaust piston, or transfer the material through the intake piston, is 6.46 kJ, while the useful energy for the exhaust piston is zero, and that of admission is 3.23 kJ (transfer less expansion of the gas).
- the theoretical minimum power installed is conventionally 32.3 kW, whereas, thanks to the invention, it can be 807 W, or 40 times lower, and the theoretical energy consumption by the installation according to the invention is 3.23 kJ instead of 12.9 kJ, a reduction of a factor of 4.
- the cylinder of the exhaust piston is assisted by the low power pump.
- the energy stored in the accumulator during a previous return phase makes it possible, with the assistance of the pump, to close the exhaust port through the exhaust piston.
- the expansion energy of the gas in the compression chamber is recovered by the hydraulic accumulator and the cylinder VR1 of the intake piston is assisted by the pump to transfer the hydraulic fluid at constant pressure, while the The pressure of the gas decreases continuously, that of the pump increases inversely.
- the pump needs a theoretical power of 16.15 kW for a total energy supplied of 3.23 kJ, and the pump is assisted by a flywheel which accumulates energy from the rotational speed of the pump during the entire cycle and restores it during the charging of the accumulator.
- the valves or distributors have short maneuvering times in front of the duration of the phases which is for example between 0.4 s and 1 s, to avoid disturbing the cycle.
- the maneuvering times are for example chosen less than 50 ms.
- the distributors are preferably chosen to have load losses inducing a low power in front of the average useful power, and it is for example less than 0.1 MPa to 788 cc / s.
- three distributors are generally passing in series in each phase.
- the hydraulic pump driven by an electric motor preferably operates at a constant speed with no change in displacement, and therefore at constant speed. It is advantageously of the gear type, offering great reliability.
- the electric motor is for example of the asynchronous type, powered by a frequency converter to best adjust the flow rate of the transfer pump and test around the point of operation.
- the hydraulically controlled device comprises a double-acting jack such as the jack VR1, a hydraulic pump P connected to the actuating chamber CA1 of the jack VR1, an accumulator ACC connected to the actuating chamber CA1 and to the hydraulic pump P , a hydraulic fluid reservoir R connected to the pump P and to the return chamber CRI of the cylinder VRl.
- a flywheel is mounted in line with the pump P. Valves are provided and control means for switching the valves and operating the pump P.
- Valves or distributors are provided in the hydraulic lines to modify the connections during the operating phases.
- the cylinder VRl is connected for example to the cabin of a hydraulic lift.
- the pump P supplies the actuating chamber CA1 of the jack, which causes the piston of the jack to move in the direction of a Volume reduction of the CRI return chamber, moving the elevator car, CRI return chamber of the cylinder is connected to the tank R, ACC accumulator assists the hydraulic pump.
- the cylinder piston moves in the direction of a reduction of the volume of the CA1 operating chamber, putting the hydraulic fluid into pressure.
- the latter being connected to the accumulator ACC, the latter charges, advantageously with the assistance of the pump P to ensure a constant pressure charge of the accumulator ACC; the flywheel charged during the ascent phase assists the pump P.
- the stored energy will be used in the next phase of ascent.
- the present invention applies to any hydraulic control cyclic system.
- the present invention is particularly suitable for operating a domestic hydraulic lift.
- the invention makes it possible to considerably reduce the energy consumed, and the additional cost related to the present invention is quickly offset by the savings in installed power and energy consumed.
- the present invention is also particularly suitable for robotic storage centers, in which loads are constantly displaced with zero altitude variations on average, in the long term, but important in the short term. Thanks to the invention, by storing energy in an accumulator during the descent phases, it can be used during the rising phases by assisting the control cylinders. The storage of this energy is assisted by the pump. During an elevation phase, the pump is assisted by the accumulator.
- the implementation of a flywheel coupled to the pump allows to pass various hard points due to friction or end-of-stroke dampers.
- the present invention also has the advantage of not having too much space compared to existing devices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1359058A FR3011047B1 (fr) | 2013-09-20 | 2013-09-20 | Dispositif a commande hydraulique a consommation energetique optimisee |
| PCT/EP2014/069934 WO2015040132A1 (fr) | 2013-09-20 | 2014-09-18 | Dispositif a commande hydraulique a consommation energetique optimisee |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3047156A1 true EP3047156A1 (fr) | 2016-07-27 |
Family
ID=50023672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14767013.7A Withdrawn EP3047156A1 (fr) | 2013-09-20 | 2014-09-18 | Dispositif a commande hydraulique a consommation energetique optimisee |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3047156A1 (fr) |
| FR (1) | FR3011047B1 (fr) |
| WO (1) | WO2015040132A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3112089B1 (fr) * | 2020-07-02 | 2024-01-19 | Commissariat Energie Atomique | Dispositif d’injection sous haute pression d’un effluent |
| CN113911744A (zh) * | 2021-08-31 | 2022-01-11 | 东南大学 | 一种用于真空状态下颗粒物输送的输送泵及输送方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7124576B2 (en) * | 2004-10-11 | 2006-10-24 | Deere & Company | Hydraulic energy intensifier |
| US7444809B2 (en) * | 2006-01-30 | 2008-11-04 | Caterpillar Inc. | Hydraulic regeneration system |
| AT507110B1 (de) * | 2008-07-30 | 2012-11-15 | Ehrenleitner Franz | Presse zum umformen von material |
| FR2973082B1 (fr) * | 2011-03-22 | 2015-12-25 | Commissariat Energie Atomique | Dispositif pompe de transfert a pistons, procede de transfert de matiere solide granulaire utilisant un tel dispositif, application du procede a l'alimentation d'un reacteur de gazeification |
-
2013
- 2013-09-20 FR FR1359058A patent/FR3011047B1/fr not_active Expired - Fee Related
-
2014
- 2014-09-18 EP EP14767013.7A patent/EP3047156A1/fr not_active Withdrawn
- 2014-09-18 WO PCT/EP2014/069934 patent/WO2015040132A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2015040132A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3011047B1 (fr) | 2015-11-13 |
| FR3011047A1 (fr) | 2015-03-27 |
| WO2015040132A1 (fr) | 2015-03-26 |
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