FR2841890A1 - SEQUENTIAL AND CYCLIC DAMPING / FILLING METHOD OF A MULTI-STORAGE FLUID SUPPLY TANK ASSEMBLY AND CORRESPONDING INSTALLATION - Google Patents

Abstract

The invention relates to a method and a device for sequential and cyclic emptying / filling multiple tanks (T1 to T6). The tanks are emptied one by one and in turn depending on their use and the pressure of which is greater than one. final pressure, to generate a sub-set of emptied tanks and a sub-set of non-emptied tanks, the tanks of the sub-set of emptied tanks are filled (bi) to the filling pressure, to generate a sub-set of tanks filled, the sub-set of non-emptied reservoirs and the subset of filled reservoirs are reordered (b2) at least partially, to generate a reordered set of reservoirs, and the reordered set of reservoirs is subjected to any emptying cycle. subsequent successive filling Application to the management of multi-tank fluid storage-supply assemblies equipping land vehicles or aircraft equipped with internal combustion engine or fuel cell.

Description

The invention relates to a method of sequential emptying / filling

  and cyclic of a multi-tank storage-power supply

  fluid and a corresponding emptying / filling plant.

  The multi-tank fluid storage-supply assemblies are currently implemented from elementary tanks made of composite materials, consisting, in particular, of a casing (liner)

  metal reinforced by a fiber structure embedded in a resin.

  The aforementioned elementary tanks, referred to as composite tanks, and the multi-tank assemblies incorporating them offer, on traditional metal tanks, the advantage of lightness, the ratio of the mass of the contents to the mass of the container being very favorable to the first designated . For this reason, the above-mentioned composite tanks and multi-tank assemblies are destined for promising application in the field of public transport vehicles or vehicles, particularly vehicles.

  internal combustion or fuel cell.

  Whereas traditional metal tanks are exploited for a very long time and that for this reason, their life, their functional and / or operational limits, their mode of degradation, even their mode of ruin, and the measures necessary for their monitoring and their maintenance are well known, experience and know-how in the implementation and / or use of composite tanks or their combination appear

much more limited.

  At the present time, the industrial manufacturers of tanks made of composite materials and their combination usually give a service life of their products expressed not by a time value, but by a number of filling / emptying cycles. The notion of emptying covers

  that of emptying, especially for use.

  Consequently, it is legitimate to conclude that the life of these products is directly related to the conditions of the filling / emptying cycles. In particular, the filling rate, the rate of increase of the pressure and the temperature of the fluid in the composite reservoir (s) are parameters which influence the mechanical stresses experienced by the

  structure of the latter and thus the aging thereof.

  In addition, while the inspection and testing of a traditional metal tank makes it possible to verify the good structural and functional state of the latter, there is no proven method to verify that of structures

  composite tanks or their combination.

  Currently, several solutions are proposed for the management, inspection and / or maintenance of composite tanks or

  assemblies having a plurality of these.

  When several tanks, such as composite tanks, are needed to supply a fluid, such as a combustible gas, of a system that consumes it, it is possible to either empty

  simultaneously these tanks, or to empty them sequentially.

  The simultaneous emptying process makes it possible to design the simplest installation of composite tanks connected in parallel, but with the corollary of such simplicity, a permanent pressurization of all the circuits and connections, and, consequently, the introduction

risk of leaks.

  In addition, in terms of the life of the composite tanks, the disadvantage appears that all the composite tanks are emptied (at least in part) and filled again, all these tanks therefore undergo a substantially complete cycle, even if all the fluid contained by all the composite tanks was not used and if, therefore, a dump of one or

  many of the composite tanks were not essential.

  The sequential emptying process allows, on the contrary, to put into service, and therefore under pressure, only the circuits and connections of the

  composite tank being emptied.

  However, in this process, the dump sequence is always initiated from the same first composite reservoir to be continued next, in an immutable order, on the second, the third, and so on, as needed. If, as most often, the total mass of gas contained and stored in the multi-tank storage assembly is not used, then the first most frequently used composite tanks are only subjected to the sequential dump process. As a result, the replacement, at the end of the service life, of the most used composite tanks requires either an individual counting of the cycles applied, which complicates the installation and the maintenance and can lead to a multiplication of the number of interventions, a systematic exchange of all the tanks when the first, the most requested, reaches its lifetime limit, which

  leads to eliminate composite tanks still usable.

  The object of the present invention is to remedy all of the aforementioned drawbacks presented by the emptying / filling processes of composite tanks and / or composite tank assemblies incorporating

a plurality of these.

  In particular, an object of the present invention is to cover a sequential and cyclic emptying / filling process of a multi-storage reservoir-fluid supply assembly and a corresponding emptying / filling installation, whereby all the composite tanks of the same storage-supply unit undergo, over any period of multiple use of the autonomy of this set, substantially the same number of emptying / filling cycles, each of the composite tanks of this set being thus subject to a treatment substantially

identical.

  Another object of the present invention is, due to the substantially identical treatment of each composite tank mentioned above, to cover a sequential and cyclic emptying / filling process of a multi-storage tank-fluid supply assembly. and a corresponding emptying / filling installation, whereby all the composite tanks of this set have substantially the same

temporal life time.

  Another object of the present invention is also to cover a sequential and cyclic emptying / filling process of a multi-storage tank-fluid supply assembly and a corresponding emptying / filling installation allowing optimization. the temporal lifetime of each composite tank, through a standardization of both emptying conditions and filling thereof, the amounts of fluid respectively reintroduced empty can be made substantially identical for composite tanks

substantially identical.

  Another object of the present invention is, finally, to cover a sequential and cyclic emptying / filling process of a multi-storage reservoir-fluid supply assembly and a corresponding emptying / filling installation allowing optimization. the temporal life of each composite tank through an optimization of the quantities of fluid emptied at a final pressure, respectively reintroduced from this final pressure, the aforementioned optimized fluid quantities to reduce both the heating of each composite tank that the variation of pressure and mechanical stresses applied to each composite tank during each filling from the final pressure. The method of sequential and cyclic emptying / filling of a set of fluid storage feed comprising a plurality of fluid storage units each filled with a filling pressure, object of the invention, applies to connected storage units in parallel via an individual valve,

  each storage-power unit and the individual valve associated with it being identified by a separate reference number.

  It is remarkable in that it consists at least for a current cycle of emptying / filling operations, to be emptied one by one and in turn, depending on their use, any fluid storage-supply unit, identified by through its reference number, whose pressure is greater than a final pressure, to generate a subset of empty fluid storage-supply units, the fluid storage-supply assembly comprising, following the operation of emptying, this subset of drained fluid storage-supply units and a subset of un-drained, full fluid storage-supply units, complementing this subset of storage-supply units in fluid drained in this storage assembly, filling the drained fluid storage-supply units, identified by their reference number, with fluid at the filling pressure, to generate a sub-set of the filled fluid storage-supply units and at least partially reordering the subset of undrained fluid storage-supply units and the subset of filled fluid storage units to generate a a set of reordered fluid storage-supply units, subjecting the reordered storage-supply unit assembly to any subsequent emptying / refilling cycle subsequent to the current cycle, the emptying, filling and reordering operations being applied in whole or in part to each subset of undrained fluid storage-supply units and / or subset of filled fluid storage units obtained successively after each operation of

  reorder, at least partially.

  The emptying / filling installation, which is the subject of the present invention, applies to a multireservoir fluid storage-supply assembly, comprising a plurality of fluid storage-supply units each filled with a filling pressure and connected in parallel through an individual valve, each storage-supply unit and the individual valve associated therewith being identified by at least one

  separate number, constituting an address.

  It is remarkable in that it comprises, at least, associated with each fluid storage-supply unit, pressure sensor transducers which, as a function of the pressure measured in each storage-fluid supply unit, deliver at least full and empty storage-supply unit information, and sequential and cyclic control circuits of each individual valve, from this full empty supply unit information, and the separate number constituting this address , to empty one by one and in turn, depending on their use, any fluid storage-supply unit, the pressure of which is greater than a final pressure, then to fill in fluid at this filling pressure each storage unit fluid supply

  empty, during a dump / fill cycle.

  The method and the sequential and cyclic emptying / filling installation of a multi-storage tank-fluid supply assembly, objects of the present invention, find application to the implementation of the maintenance and management of sets multi-tanks made of composite materials for storing and supplying fluid to internal combustion engines or fuel cells fitted to motor vehicles, aircraft or others.

  They will be better understood by reading the description and

  following the drawings below, in which: FIG. 1 represents, for purely illustrative purposes, the process of covering the sequential and cyclic emptying / filling process of a fluid storage-supply assembly comprising a plurality of storage-supply units in accordance with the object of the present invention; FIG. 2a represents, by way of illustration, a flowchart of the emptying process applied to any storage-supply unit of a fluid storage-supply assembly, in accordance with the subject of the present invention; FIG. 2b represents, by way of illustration, a flow diagram of the filling process applied to any storage-supply unit of a fluid storage-supply assembly in accordance with the subject of the present invention; FIG. 3 represents, by way of illustration, the schematic diagram of a sequential and cyclic emptying / filling installation of a multi-storage storage-fluid supply storage assembly in accordance with the subject of the present invention; FIG. 4 represents, for purely illustrative purposes, an exemplary implementation of a sequential and cyclic emptying / filling installation of a multi-tank storage assembly according to the subject of the invention, according to a method control unit in pneumatic logic, for one of the tanks constituting a multi-tank storage assembly; FIGS. 5a and 5b represent, by way of illustration, a specific embodiment of visual indicators of filling gauges of storage-supply units equipping an installation conforming to the object of the

  present invention and allowing a simple use of the latter.

  A more detailed description of the emptying / filling process

  sequential and cyclic manner of a storage-fluid supply assembly, in accordance with the subject of the present invention, will now be given with the

figure 1.

  In general, it will be recalled that the method that is the subject of the present invention is implemented for a set of fluid supply stores comprising a plurality of fluid supply storage units, each denoted T1 to T6, this set and each of the units. storage-supply allowing, for example, the power supply of a vehicle, such as a commercial vehicle, a bus for example, ensuring a

  urban service, an aircraft or other. In the description, we will designate

  indifferently tank any storage-power unit or vice versa.

  For the description of the covering of the process which is the subject of

  According to the present invention, it is pointed out that, in relation to FIG. 1, the number of fluid storage-supply units is not limited, but that, by way of nonlimiting example, the number of constituent storage units is of the storage-fluid supply set is reduced to six in order to facilitate

comprehension.

  Furthermore, it is indicated that, in an initial situation corresponding to an initialization, each fluid storage-supply unit is filled to a filling pressure, noted for example PMAX, the letter P, in FIG. each unit of storage supply fluid at the filling pressure PMAX. In addition, each supply storage unit T1 to T6 is provided with an individual valve, a valve for use, not shown in the drawings, all the storage-supply units being

  connected in parallel via the aforementioned valve.

  Finally, each storage-power unit and the individual valve

  associated with it are identified by a separate reference number T1 to T6.

  By way of nonlimiting example, with reference to FIG. 1, it is indicated that each storage-supply unit and the corresponding valve correspond to an arbitrary number 1 to 6, the order of the numbers assigned to the latter being arbitrary and totally independent of the topography of the installation. As a result, as shown in FIG. 1, the initial situation, designated Initialization, corresponds to six storage-supply units T1 to T6 in the corresponding arbitrary order:

"[4, 5, 1, 6, 3, 2].

  In the aforementioned initial situation, each food storage unit is full, this situation being indicated by the letter P. The method that is the subject of the present invention makes it possible to optimize the emptying / filling processes of each storage-food unit

  fluid from the initialization situation mentioned above.

  As shown in Figure 1, it consists, during a first emptying / filling cycle, for example, during a corresponding use, without limitation, the use of the bus on a line scheduled for one working day, to be emptied one by one and in turn, depending on their use, any fluid storage-supply unit identified via its reference number 1 to 6 and whose pressure is greater than a final pressure, final pressure for which the storage-filling unit considered is declared empty. This final pressure corresponds to a specific pressure Pf, for which the corresponding stocking unit is considered empty and has the reference V. It is understood, in particular, that during the use of the aforementioned bus, that is to say of the storage-fluid supply unit equipping the latter, as represented at initialization, the emptying operation one by one and in turn of any storage-fluid supply unit, in function of their

  use, has the effect of generating a subset of units of stockagedimentation drained fluid.

  In fact, from the fluid storage-supply units identified by their reference number, as represented in the initialization step, the data structure formed by the list of these reference numbers is considered and proceeds, by way of non-limiting example, to the emptying of the successive storage-supply units whose number corresponds to the successive numbers, by reading from the first element, from the left and successively, all the constituent elements of this list. The emptying of the corresponding storage-supply unit is carried out

  by controlling the individual valve associated therewith.

  It is considered, by way of non-limiting example, and arbitrarily, that, for a working day, the total consumption, to ensure the urban service of the bus, corresponds to 2.5 storage units, for example, the storage units 4 and 5 are shown completely empty and the food storage unit 1 is shown half-emptied, after use during a

aforementioned working day.

  The aforementioned emptying operation has the effect of generating a subset of empty fluid storage-supply units and the fluid storage-supply assembly comprises, following the aforementioned operation, the subset of units. fluid storage-supply system, formed by the storage-supply units in reference 4 and 5 and a sub-set of undrained fluid storage-supply units formed by

  storage-feed units labeled 1, 6, 3, 2.

  According to a particular embodiment of the method which is the subject of the present invention, it is indicated that any storage-feed unit which has not reached the final pressure and which, like the food storage unit bearing the reference 1, is partially empty, carries the PV reference for this reason, but is arbitrarily considered full. For this reason, the storage-supply unit bearing the reference 1 is considered to belong to the subset of non-drained fluid storage-supply units. Under these conditions, the subset of unsupplied, solid or considered full fluid storage units is the complement of the subset of storage-supply units.

  in fluid drained into the storage assembly.

  The two aforementioned subsets are represented in FIG. 1 by the two data sub-structures formed by the sublists,

  having the elements [4, 5], respectively [1, 6, 3, 2].

  The aforementioned emptying step is then followed by a step of

  fill the filling units with fluid at the filling pressure.

  fluid supply emptied, the latter being identified by their number

  for generating a subset of filled fluid storage units.

  This operation is represented in the sub-step b1 of FIG. 1 in the first emptying / filling cycle, the storage-feeding units, bearing the reference 4 and the reference 5, being deemed to be fulfilled and carrying, for

  this reason, the letter R illustrating the state filled.

  The filling step b1 mentioned above is then followed by a substep of reordering, at least partially, the subset of undrained fluid storage-supply units and the subset of storage-storage units. fluid supply filled to generate a set of units

  storage-supply of reordered fluid.

  In FIG. 1, this operation is represented, in substep b2, as merely inverting the order of the aforementioned data substructures, the subset of data or sub-list representative of the subset of data. undrained fluid storage-supply units [1, 6, 3, 2] being simply exchanged with the data substructure or sub-list representative of the subsystem storage-supply unit subassembly.

fluid filled [4, 5].

  The set of reordered fluid storage-supply units, obtained at the end of the reordering sub-step b2, corresponds to the data structure, represented in FIG. 1, of the form:

* [1, 6, 3, 2] [4,5],

  to the storage-supply unit bearing the reference 1 being associated with the partially empty state PV, to the reference storage-supply units [6, 3, 2] being associated with the full state P and with the storage-supply units [4, 5] being associated with the filled state R. The sub-steps b. filling and b2 reordering can then be followed by a so-called reset step consisting, by way of non-limiting example, to all the storage units supply, the full state PMAX, only the unit of stockagelementation bearing the reference 1 being arbitrarily declared in the full state, while it is simply partially empty, the other storage-supply units being actually full, in the P state. The reset step, designated Reset, may be be done simply by assigning a variable P to

  storage-feed units 1, 4 and 5.

  The method which is the subject of the present invention can be continued and then consists in subjecting the set of reordered storage-feeding units previously described to all cycles of successive emptying / filling operations subsequent to the current cycle, the first cycle, the operations of emptying, filling and reordering being applied in whole or in part to each subset of undrained fluid storage-supply units and / or filled fluid storage-supply units successively obtained after each operation consisting of to reorder at

less partially.

  The successive covering of the method that is the subject of the present invention on the storage assembly obtained following the first reset, represented in FIG. 1, will now be described for a second emptying / filling cycle and a third specific emptying / filling cycle. in two special situations corresponding, for the second emptying / filling cycle to another working day, for which the service and the load transported by the example bus are identical, the consumption also corresponding to that of a working day, and a third subsequent emptying / filling cycle for which, on the contrary, the service and the load transported by the bus corresponds to a non-working day, this consumption

  being arbitrarily attached to a single storage-power unit.

  The second dump / fill cycle is covered from the reset stage conducted as part of the first dump / fill cycle, the operation of emptying one by one and in turn, depending on their use any fluid storage unit, identified by its reference number and whose pressure is greater than a final pressure, is, under these conditions, implemented from the set of storage-storage units. reordered fluid supply

  represented at the end of the first cycle, then reset.

  It is understood, in particular, that the emptying operation is then covered successively for the storage-feeding units bearing the reference 1, 6 and following by successive reading of the structures of

corresponding sublists.

  Of course, and in the context of the non-limitative example, the consumption during the second cycle necessary to ensure the provision of bus services being identical to that of the first cycle, this consumption consists of half the storage-supply 1 supplemented by all the capacity of the storage-supply units 6 and 3. It is of course understood that the operation of emptying one by one and in turn the above-mentioned storage-feeding units, of which the reference numbers correspond to the head reference numbers of the list representing the set of reordered fluid storage-supply units, is achieved by selectively controlling the valves associated with the corresponding storage-supply units by reading the successive elements of

this list.

  At the end of the emptying step performed at the beginning of the second emptying / filling cycle, as shown in FIG. 1, a new subdivision of the set of fluid storage-supply units consisting of: the subset of emptied fluid storage units corresponding to the food storage units with the reference number [1, 6, 3]; and - the subset of undrained fluid storage-supply units corresponding to the storage units. feeding bearing the

reference [2, 4, 5].

  The representative data structures of the two aforementioned subassemblies are given in FIG. 1 and correspond to: the sub-list [1, 6, 3] whose elements are associated with the empty state V representative of the state of the storage units -supply [1, 6, 3] and - the sub-list [2, 4, 5] whose elements is associated with the full state P. The emptying operation of the second emptying / filling cycle is then itself even followed by a filling sub-step, denoted b1, consisting of

  fill empty storage / filling units [1, 6, 3]. At the end of the filling sub-step mentioned above, the sub-step

  a set of filled fluid storage-supply units, represented by the sub-list [1, 6, 3], with each element of the aforementioned sub-list being associated with the filled state R. Of course, the subset of undrained storage units, formed by the sub-list [2, 4, 5], is unchanged, with each element of this sub-list being associated with the full state P. The above-mentioned filling sub-step b1 is then followed by a substep b2 of reordering, at least partially, the subset of said undrained fluid storage-supply units and the subset of filled fluid storage-supply units to generate the set of reordered fluid storage-supply units, such as

as shown in Figure 1.

  In the same way as in the case of the first cycle, of course, the above-mentioned reordering sub-step consists in placing at the head of the data structure the sub-list representative of the subset of undrained storage-supply units. followed by the sublist

  representative of the subset of filled storage-power units.

  The corresponding data structure is represented in FIG. 1 in substep b2 and is of the form:

20. [2, 4, 5],

  each element of the above-mentioned sub-list being associated with the full state P, and a [1,6,3], with each element of the aforementioned sub-list being associated with the filled state R. Sub-step b. filling and b2 reordering can then be followed, as in the case of the first cycle, a reset consisting of allocating, to all storage-supply units, the full state P. At the end of the second cycle of emptying / filling and after the reset, there is a new set of reordered power storage units and, of course, reset storage-power units of the form:

* [2,4,5, 1,6,3]

  all the elements of the representative list of this set being associated with the full state P. As a comment, it is pointed out that the operation of resetting the second cycle consisted simply in substituting, for the filled supply storage units, the state filled to the full state. This change consists of

  a simple set of assigning corresponding coded values.

  The implementation of the third emptying / filling cycle can then be carried out from the set of reordered fluid storage and supply units and, of course, reset, obtained and illustrated at the end of the second

cycle in Figure 1.

  In the case of use of the bus for a non-working day, such as a Sunday for example, it is considered, by way of purely illustrative example, as well as represented for the third cycle, that the consumption necessary for the delivery of the bus, for that day, corresponds,

  arbitrarily, to the storage capacity of a food storage unit.

  Under these conditions, the operation of emptying one by one and in turn, according to their use, any fluid storage unit identified by means of its reference number, corresponds, for this reason, to the emptying of the storage-supply unit 2, which is placed at the top of the list in the representative list of the set of reorganized fluid storage units and reinitialized at the end of the second emptying / filling cycle. This situation is represented in step a of emptying the third

  emptying / filling cycle of FIG.

  At the end of this step, two data structures representative of the subset of empty fluid storage-supply units, represented by: the sub-list formed by [2] with the element of which is associated with the empty state V, and - the subset of empty, full fluid storage-supply units represented by the sub-list:

* [4, 5, 1, 6, 3]

  each element of this sub-list is associated with the full state P. Following the emptying operation performed in the third emptying / filling cycle, the filling sub-step b1 then makes it possible to obtain the new data structure. of the form * [2] sub-list representing the subset of the filled storage-power units, the unit 2 in this case, and

* [4, 5, 1, 6, 3]

  representative sub-list of the subset of food storage units

not drained.

  The re-ordering sub-step b2, implemented in the same manner as in the case of the first and second cycles, with respect to the aforementioned subclasses, makes it possible to obtain the data structure:

* [4, 5, 1, 6, 3]

  whose elements the full state P is associated with, and

* [2]

  to the element of which the filled state R is associated.

  A reset step then makes it possible to assign the full state P to all the storage-supply units at the end of the third cycle of

emptying / filling above.

  It is thus found that, in accordance with the implementation of the method that is the subject of the present invention, and with reference to the illustrative example of FIG. 1, all successions of emptying / filling cycles for consumed global quantities of stored fluid corresponding to an integer multiple of the total storage capacity of the fluid storage-supply assembly, formed by a multiplicity of storage-supply units, makes it possible to reconfigure the representation of the storage-supply units of this storage-storage unit. supply according to an initial configuration of departure, each unit of stockagelement in fluid, constitutive of this set,

  being strictly subject to the same number of emptying / filling cycles.

  On the contrary, when, by way of nonlimiting example, the successive application of the emptying / filling cycles does not correspond exactly to

  an integer multiple of the storage capacity of the storage set-

  considered, then the storage-supply units constituting this storage-supply unit, were subjected to a number of successive emptying / filling cycles, differing by no more than one unit for a distinct subset of stockagelementation constitutive of this set. It is understood, of course, that under these conditions, the maximum uncertainty of the number of emptying / filling cycles applied to each storage-supply unit constituting this set is at most equal to a dump / fill cycle for a group or subset of food storage units, this value, in relative value, being very small with respect to the service life expressed in number of emptying / filling cycles attributed to each of the storage-food units by the manufacturer of

these last.

  It will thus be understood that whatever the number of emptying / filling cycles actually applied to the above-mentioned storage-filling units of one of the assemblies, in accordance with the covering of the method that is the subject of the present invention, the replacement of the set of storage-feeding units of this set is then fully justified, since only a subset of these storage-feeding units has been subjected to a number of cycles differing at most from one cycle compared to those

  that have suffered the largest drain / feed cycle value.

  Various indications will be given regarding the process of processing the above lists and sub-lists in order to ensure

  optimal method of the present invention.

  In general, it is indicated that the operation of at least partially reordering the subset of non-drained fluid storage units and the subset of filled fluid storage units, as shown in subclauses. steps b2 of the first, second and third cycles illustrated in FIG. 1, simply consists of permuting the corresponding sub-lists obtained at the previous sub-step b1 of filling, and concatenating the latter, the concatenation relating to the sub-list of numbers reference number defining the subset of undrained storage units and the sub-list of reference numbers defining the subset of storage units filled. Finally, it is specified that any reordering operation relates to the data structures representative of the power storage assembly considered, but not to the physical arrangement of the storage units.

  storage-supply constitutive of the latter.

  By way of nonlimiting example, it is indicated that the aforementioned partial reordering does not require any reordering of the reference numbers in each sub-list, to modify the order of use or one or the other of the elements by compared to other elements of the same subset

which they belong to.

  By a procedure, as described and illustrated above in connection with FIG. 1, it is indicated that the list of undrained storage units and the unvaped storage units constituting this list are then made a priority for the execution of any operation cycle of

  subsequent emptying / filling.

  It will also be understood that, of course, the method which is the subject of the present invention can be implemented, whatever the load or the service performed by the vehicle equipped with such a fluid supply storage assembly, and that in particular , the specific management of the partial consumption of the total storage capacity of a given storage-food unit, such as the storage-food unit bearing the reference 1 in the case of the first cycle, presents no difficulty, in due to the fact that such a partially empty storage-supply unit is simply considered as a full storage-feed unit in

  the strict framework of the implementation of the method object of the present invention.

  It is indicated, under these conditions, that, in the context of the implementation of the method that is the subject of the present invention, only one storage unit, of any reference number, is partially empty during a successive emptying cycle. filling, but that such a state has no effect

  point of view of the implementation of the method of the present invention.

  As regards the effective implementation of the latter, it is indicated that the operation of emptying one by one and in turn each storage-supply unit, can advantageously consist in bringing the pressure of each storage-feeding unit in fluid subjected to this

  operation at a final pressure corresponding to the empty state.

  In a non-limiting embodiment, the final pressure may be substantially zero or, where appropriate, residual. The concept of substantially zero pressure must be understood as a value of slight overpressure with respect to the atmospheric pressure,

1 bar.

  The notion of residual pressure must be understood as a

  pressure of a few bars, for example.

  Finally, in another preferential non-limiting embodiment, the aforesaid final pressure may be a so-called gas reserve pressure, denoted PRE, each storage-supply unit then being brought to a specific pressure sufficient to constitute a reserve at within each storage-power unit. Such a reserve pressure can be

  between 20 to 40 bars, for example.

  Finally, with regard to the filling operations, it is indicated that these operations consist, generally speaking, in introducing, into each empty fluid storage-supply unit, a quantity of fluid bringing the pressure of the fluid into the unit. fluid storage-supply considered, at a value substantially equal to the filling pressure, the

  PMAx pressure <previously mentioned.

  From the point of view of the operation of vehicles, such as buses equipped with sets of storage-supply units in which the process which is the subject of the invention can advantageously be implemented, the creation of a reserve of gas corresponds to a quantity of gas that is not consumed in a common usage of all the food storage units, but which can be used, if necessary, and provide a

additional autonomy.

  From the point of view of the life of the tanks, this reserve, which is obtained by not proceeding to the total emptying of the storage units, makes it possible to carry out less restrictive fillings, since these are carried out in storage units. non-empty supply, and thus heating up less, and that a more limited pressure increase is thus applied to the latter during filling operations

previously mentioned.

  Finally, with regard to the notion of final, zero or residual pressure, it is indicated that the notion of vacuum is entirely relative and must be understood as a pressure threshold value from which it can not or it must no longer be extracted from the gas storage unit concerned. Indeed, for reasons of safety, purity or loss of load, it is generally advisable to always leave some pressure in the units

storage-feeding.

  The method according to the invention can then, in a particularly advantageous manner, be covered from the following rules applied to emptying and filling, illustrated by FIGS. 2a and 2b, in which k denotes the reference number or address of the storage unit Tk. According to their pressure Pk, the food storage units are designated: - full, Pk = PMAX; - between full and in reserve, PRE <Pk <PMAX; - in reserve, Pk = PRE;

  - below the reserve pressure, Pk <PRE.

  The previous equality and / or inequality relationships defining the state ranges of the storage-supply units are defined taking into account the usual measurement uncertainties in the field of

  storage and conditioning of gases.

  In emptying (use) (FIG. 2a): a) one empties one by one and in turn the solid storage units or between full and in reserve, as described in connection with FIG. 1, up to their reserve pressure PRE. This is illustrated by the positive response to the pressure test 100, 3Pk> PRE, the emptying 101 to the reserve pressure PRE and the

  passage 102 to the next reference number unit k.

  b) when, during use, all the food storage units have reached their reserve pressure, the emptying is continued for use of the storage-feeding units one by one and alternately up to the relative vacuum pressure, pVR. This is illustrated by the negative response to the pressure test 100, the emptying 103 to the pressure Pvr, Pk = Pvr, and the passage 102 to

  the next reference number unit k.

  In the filling (supply) (FIG. 2b): c) the storage-supply units are brought back to the relative vacuum pressure, or whose pressure Pk is lower than the reserve pressure PRE, to the reserve pressure by a filling of controlled reserve. This is illustrated by the positive response to the pressure test 200, 3 Pk <PRE, filling 204 to the reserve pressure Pk = PRE of the storage-supply unit of number

reference k.

  d) filling at filling pressure PMAX, by a standard filling, the storage-supply units whose pressure Pk is substantially equal to the reserve pressure PRE. This is illustrated by the positive test response 201, Pl = PRE, the standard fill 202 Pk = PMAX,

  then the passage 203 to the following reference number k.

  Specifically, it is indicated, by way of nonlimiting example, that the standard filling operation 202 is performed indifferently either following the controlled reserve filling step 204, on any food storage unit that could be submitted beforehand. to this operation, either on any storage-supply unit simply in reserve discriminated against the test

pressure 201.

  Of course, the negative response to the pressure test 201 discriminates the existence of a storage-supply unit between full and in reserve, where appropriate full, such a unit, in accordance with the process object of

  the invention, being subjected to a subsequent emptying such as 101 in Figure 2a.

  Finally, it is indicated that the steps 102 and 203 of transition to the following reference number k refer to the reading of the following reference number

  in the data structures described in connection with Figure 1.

  The previously described procedure allows in normal times, that is to say when the reserve is not started, to proceed with the filling of storage-supply units which are in a well-established pressure state, the reserve pressure PRE, between 20 and 30 bar, as well as

  mentioned earlier in the description. This simplifies

  considerably the management of the filling and significantly reduces the heating of the storage-food units. Indeed, it is known, in the field of gas storage, that these are the "first bars" introduced

  in the storage unit that heat the walls of the latter the most.

  A more detailed description of an installation of

  sequential and cyclic emptying / filling of a set of fluid storage supplies, in accordance with the subject of the present invention and comprising a plurality of fluid storage-supply units each filled with a filling pressure, will now be given in FIG. frame of a

  first non-limiting embodiment, as shown in FIG.

  The embodiment of the installation that is the subject of the present invention, as represented in FIG. 3, corresponds to a specific implementation in which the sequencing of the operations is controlled by a microprocessor, in particular by the microprocessor equipping the vehicle.

  automobile such as a bus, for example, equipped with such an installation.

  In the aforementioned embodiment, it is indicated that the components used may be electromechanical components controlled

  preferentially by the aforementioned microprocessor.

  As shown in FIG. 3, the installation comprises a plurality of fluid storage-supply units, these storage power supply units being represented by tanks, denoted T1 to T6, the number of six tanks being not limiting, but corresponding to the example of implementation of the method which is the subject of the present invention, as described previously

in connection with Figure 1.

  The storage-supply units T1 to T6 are connected in parallel via an individual valve, denoted V1 to V6, to a utilization pipe, denoted CU, which is relayed to the circuit for use of the vehicle.

  view of the engine power supply of the latter.

  Of course, each storage-supply unit T1 to T6, as well as the individual valve associated therewith V1 to V6, is identified by at least one distinct number constituting an address, the numbers 1 to 6 shown in the figure. 3. It will be understood, of course, that the numbers 1 to 6 mentioned above constitute a symbolic address, which can be translated into any appropriate address making it possible to reach each associated functional element.

  to each of the aforementioned storage-supply units T1 to T6.

  As shown in FIG. 3, the installation comprises, at least, associated with each aforementioned fluid storage-supply unit, a pressure sensor circuit, denoted P1 to P6, a pressure sensor circuit P1 to P6 being, although heard, coupled and coupled to the corresponding supply storage unit Tl to T6, to output the pressure information corresponding to the empty, full, empty storage-supply unit information into

  depending on the state of the latter.

  In addition, as shown in FIG. 3, each supply storage unit is advantageously connected to a filling pipe CR, this connection being made in parallel via valve valves.

  individual filling, denoted Ri to R6.

  In FIG. 3, it is indicated that the individual valves or utilization valves V, to V6, respectively the individual valves R, to R6 are schematically represented between two "open" or "closed" positions OF, an arrow directed towards the "Open" position O, respectively "Closed" F, indicating, by way of example, the open or closed position of the latter. Finally, the installation that is the subject of the present invention comprises a circuit 1 for sequential and cyclic control of each of the individual valves V, at V6, R, at R6, this sequential and cyclic control being carried out on the basis of the pressure information. full, empty storage-supply unit and the separate number of the address

supra.

  For this purpose, the sequential and cyclic control circuit 1 may advantageously comprise the previously mentioned microprocessor 10 to which is associated, on the one hand, a program memory 11, a ROM-type permanent memory, for example, and a memory of working or RAM memory bearing the reference 12. The microprocessor assembly 10 and, ultimately, sequential control circuit 1 is connected by a BUS connection 2 to each of the individual valves of use, respectively filling, V1 to V6, respectively R1 to R6, as well as, of course,

  pressure sensor circuits P1 to P6 above.

  The sequential and cyclic control circuit 1 of the aforementioned valves makes it possible to empty one by one and in turn, depending on their use, any fluid storage-supply unit T1 to T6 whose pressure is greater than a final pressure, and then to fill in fluid, at the filling pressure, each empty fluid storage-supply unit, that is to say to the final pressure value during a cycle of

  emptying / filling, as described previously in the description, in connection

with Figure 1.

  By way of non-limiting example, the first storage-supply unit T4 is shown in the use position, the individual valve V4 being, for this reason, in the open position, all the other individual valves, use valves, filling valves being, on the contrary, in the closed position.

  In Figure 3, there is shown each power supply unit T1 to T6 equipped with a single pressure sensor circuit P1 to P6.

  It is understood, in particular, that the above-mentioned pressure sensor may be constituted by any absolute pressure sensor, formed by an electromechanical transducer, such as a piezoelectric sensor, for example, and capable of delivering a so-called absolute pressure value. This absolute pressure value can then be compared with one or more threshold values such as, for example, the previously mentioned final pressure value Pf whose

  actual value may be substantially zero or residual.

  The pressure value delivered by the pressure sensor can also be compared with a pressure reserve value PRE gas, such

  than previously mentioned in the description.

  In a specific nonlimiting embodiment, it is indicated that each pressure sensor circuit P1 to P6 can, for example, deliver an analog pressure value, which can be converted into a numerical value, the digital pressure value and the comparison of this value. value to the aforementioned threshold values can then be transmitted by the connection by

  BUS 2 to the sequential and cyclic control circuit 1 mentioned above.

  The procedures for analog-to-digital conversion of the aforementioned pressure values for comparison with the threshold and transmission values to the sequential and cyclic control circuit 1 will not be described in detail, since they correspond to modes of implementation.

  specific, conventional, known to those skilled in the art.

  It is simply indicated that the sequential and cyclic control circuit 1 may be provided with a message transmission interface circuit, these messages serving to successively interrogate, via the BUS link 2, each of the electromechanical components, such as individual valves of use V1 to V6, valves

  individual filling R1 to R4 and pressure sensor circuits Pl to P6.

  The successive interrogation of each of the aforementioned elements can be carried out according to the so-called "polling" techniques in English language, making it possible to obtain the successive information by scanning for each of the aforementioned elements. Finally, in the embodiment, as described in FIG. 3, it is indicated that, to carry out the filling operations of empty supply storage units, a production tank can be connected to the filling pipe CR, which is controlled through a valve of

VP production.

  It is understood, in particular, that, for the execution of the filling operations, for example, it is possible, given the addresses assigned to each of the storage-filling units T1 to T6, to assign a specific address to the installation, that is to say finally to the sequential and cyclic control circuit 1 associated with this installation, filling management can then be performed via the installation address and the relative addresses assigned to each of the storage-power units constituting this installation. The filling of the aforementioned supply storage units can then be managed by interactive dialogue between a control center or management of the production tank and each installation I designated by their installation address, access to the functional organs of each storage unit. supply being obtained by relative addressing and constitution of the path I / k_ represents the address or distinct number, address assigned to each storage-power unit

  and the individual valves equipping it.

  The aforementioned addressing mode will not be described in detail because it corresponds to the conventional path addressing modes known from

the skilled person.

  The module 1 for sequential and cyclic control of each of the individual valves comprises, for each emptying / filling cycle, a discriminating module, among the storage-fluid supply assembly comprising a plurality of storage-supply units, the subset of the undrained fluid storage-supply units during the current drain / fill cycle and the subset of the fluid supply storage units filled during the current drain / fill cycle. It is understood, in particular, that the aforementioned discrimination module is advantageously constituted by a program module stored in the read-only memory 11 of the control module 1. It makes it possible, from the pressure values and the relative pressure values mentioned above, to particular of the full state P or of the empty state V deduced from these pressure values and from the data structure or list of the addresses of the aforementioned supply storage units, to constitute the sub-lists represented in FIG. 1 and therefore the subset undumped fluid storage-supply units considered as solid and the subset of the filled fluid supply units R, as previously described

in the description.

  The control module 1 also comprises a module for at least partial reordering of the subassemblies of non-drained fluid storage units, subsets of

* Storage-filled fluid supply.

  Of course, it is understood that the reordering module is also a software module stored in read-only memory 11, which makes it possible to carry out the aforementioned reordering, not, of course, on the physical storage-supply units represented in FIG. on the contrary, on their representation by previously mentioned data structures or lists. The reordering module thus makes it possible to generate a set of reordered fluid storage-supply units, which, following reinitialization, allows the implementation of the method that is the subject of the invention and of the installation represented in FIG. all emptying / filling cycles

  subsequent to the current dump / fill cycles applied.

  With regard to the aforementioned discrimination and reordering modules, it is indicated that these modules may consist of software modules written in declarative language, for example, such as LISP or other language, these languages being particularly well suited to handling data structures such as lists

previously mentioned.

  By way of nonlimiting example, it will be recalled that the reordering module makes it possible to calculate, from modules or under a software routine, data structures comprising the reference number or address identifying each fluid storage-supply unit Tl at T6, and the

  individual valve Vi to V6 associated therewith.

  It is recalled that the set of reordered fluid storage-supply units corresponds to the union of the first and second representative data structures of the subset of undrained fluid supply storage units and the subset. fluid storage-supply units filled during the current cycle, as well as

  mentioned above in relation to FIG.

  In particular, the software modules written from the above-mentioned languages make it possible, by simply reading the aforementioned data structures, to determine the list head and the list queue, any list head that may be constituted by one or more elements, the discrimination between the list head and the list tail which can be performed by simple reading and the meeting or concatenation of the list queue followed by the list header being directly

  performed by concatenation of the aforementioned sublists.

  After filling the empty storage-feeding units, the

  reset makes it possible to consider all the storage units 5 as full.

  It is understood, in particular, that during the meeting of the first and the second data structures, that is to say the aforementioned sub-lists, to generate the set of reordered fluid storage-supply units. on which the emptying / filling cycle subsequent to the current emptying / filling cycle is applied, the first data structure or first sub-list defining the subset of non-drained fluid storage units is then prioritized for the next cycle, the emptying operation, that is to say use for consumption in use represented by the new sub-list head is, of course,

  made a priority because of the reading and the corresponding processing.

  It is indicated that the opening command of the corresponding use valves is then performed by simply reading each successive element from the head of the sub-list and successively as necessary. The above-mentioned valves and pressure sensors are equipped with any necessary interface circuit which makes it possible, from the transmission of control messages to the specific addresses, to translate these messages into analog values of voltage and / or current allowing the operation to start. and / or stopping the electromechanical transducers constituting the valves and

aforementioned sensors.

  A more detailed description of a mode of implementation

  particularly advantageous and specially adapted for use on motor vehicles and / or under severe conditions of use will be

  now given in conjunction with Figure 4.

  The aforementioned embodiment is realized in pneumatic logic as regards the control and the management of each unit of

  Tk storage constitutive of the storage-power supply.

  In particular, it is understood that this embodiment is particularly well suited to covering the process that is the subject of the present invention, particularly in the preferred mode of implementation.

  non-limiting, as illustrated in connection with Figures 1 and 2a, 2b.

  FIG. 4 represents the set of control elements of any storage-supply unit Tk both with regard to the emptying operation and the filling operation thereof. It will be understood, of course, that, for a storage-supply assembly comprising a plurality of storage-supply units, each of these units may be provided with the same emptying or filling control members. As shown in FIG. 4, the aforementioned members are

  distributed in emptying organs, respectively filling.

  The emptying members comprise: a pressure sensor, denoted CREk, connected to the supply storage unit Tk and delivering an internal pressure information of the aforementioned unit less than or equal to the reserve pressure PRE and noted, for this reason , PREk and an internal pressure information of this unit greater than

this reserve pressure, PREk.

  a substantially zero pressure sensor, connected to the storage-supply unit Tk, and noted Cvrk, and delivering empty tank information. The empty tank information corresponds to the pressure information of the storage-supply unit equal to the relative vacuum pressure Pvr and noted, for this reason, Pvrk; the so-called utilization valve, noted Vk, directly connected to the unit

storage-supply Tk.

  The filling members comprise: - a filling valve, denoted Rk, directly connected to a filling neck G, which is intended to receive a filling nozzle B inserted in the neck G. The filling valve Rk is connected to the storage-supply unit Tk by a check valve CAk; a full tank pressure sensor, denoted CMAXk, connected to the storage-supply unit Tk and delivering a tank information

full PMAXk.

  Organs common to the emptying members and the filling members: Sk sequencer, this sequencer receiving the information delivered by the CREK reserve sensor, the empty tank sensor Cvrk and the full tank sensor CMAXk delivering the full tank information PMAXk. In addition, as shown in FIG. 4, the sequencer Sk receives the information "reservoir in reserve" delivered by the reserve sensor CREk via an AND logic gate, receiving, in addition, information from

  filling delivered by a filling sensor CRk.

  The filling sensor CRk receives, as input, information for the intake pressure of the filling gas delivered by the nozzle B and the neck G. For all the aforementioned emptying and / or filling members, the connection to the terminal A is a connection to a supply pressure allowing the implementation of the corresponding pneumatic logic circuits. The operation of the device as shown in FIG. 4 during filling is as follows: the sequencer Sk authorizes the opening of the filling valve Rk of the storage-supply unit Tk If the pressure, in the storage unit above, is lower than the reserve pressure and if, of course, the pressure in the filling circuit is present. This condition is realized by the AND logic gate, mentioned above from the reserve information and the filling information respectively delivered by the reserve sensor CREk and the filling sensor CRk. The control of the valve of

  Rk filling is performed by the sequencer Sk.

  Under these conditions, the fluid delivered by the nozzle B and the neck G, the filling valve Rk being open, pushes the non-return valve CAk and occupies the storage-supply unit Tk. The latter fills up until the sensor "full tank" CMAXk changes state and informs the sequencer Sk

that the filling is finished.

  When the latter condition is fulfilled, the sequencer Sk closes the filling valve Rk and returns to the waiting position for validation of a new authorization condition of the opening of the filling valve. By way of non-limiting example, it is indicated that a pneumatic indicator Ak allows to pass the information "full tank sensor" for the filling operator. With regard to the emptying operations of the storage-supply unit Tk considered, these operations can, of course, be implemented from the sequencer Sk, as represented in FIG. 4,

  according to the process previously described in the description in

Figure 2a.

  In particular, the pressure test 100 is carried out by the reserve pressure sensor CREk: when the pressure Pk is greater than the reserve pressure PRE, then the emptying operation 101 is continued, the sequencer Sk controlling the use valve Vk for bringing the pressure Pk of the supply storage unit Tk to the reserve pressure PREOn the contrary, when, in use, on a negative response to the pressure test 100, none of the storage-supply units has an internal pressure greater than the reserve pressure PRE, then the storage-supply unit Tk is emptied at the relative vacuum pressure, in the operation 103, the sequencer Sk controlling this operation by

  via the use valve Vk.

  In addition, optionally, as shown in FIG. 4, the filling members can be completed by virtue of the presence of a presence presence sensor, or filling presence sensor, denoted by CRPk, this sensor delivering a nozzle presence information. adapted to the neck G to perform the filling operation. This information can then be delivered to a second logic gate ET2, which also receives the filling information delivered by the filling sensor CRk. The resulting information of the presence of the nozzle adapted to the neck G and the presence of filling pressure is then directly delivered by the second logic gate ET2 to

  the first AND logic gate, for controlling the sequencer Sk.

  The presence of the filling presence sensor makes it possible to verify that the filling tool, that is to say the nozzle and the neck G, are in position

correct filling.

  By ensuring the operation of the entire installation, each Tk storage-power unit being associated with a control system as shown in FIG. 4, the control of each sequencer Sk can advantageously be driven by the control module 1 , represented in FIG. 1, advantageously by the microprocessor 10 of the vehicle. This command is executed based on the status information of the other storage-power devices. In particular, the operations 102 and 203 of transition to the following reference number k are performed by the processing and reading of the data structures

  or lists described in connection with Figure 1.

  Finally, as regards the installation that is the subject of the present invention, it is understood that, in addition to the multiplication of the emptying or filling members, described with reference to FIG. 4, this may comprise state display members. of each of the storage-supply units TkA to this end, each unit of food storage supra can be advantageously associated with a multilevel gauge and, in particular, several indicators, one for the status "full tank" and the other for the "reserve tank" status, for example. The "empty tank" status may advantageously correspond to the absence of display of the "reservoir" status

  full "and status" reserve tank ".

  The corresponding gauges can be gathered on the dashboard of the user device, such as the bus, in the form of a matrix

  display as shown in Figure 5a or 5b.

  In FIG. 5a, the display matrix corresponds to a concentric two-level camembert display for each of the units of FIG.

storage-supply T1 to T6.

  A color area, such as a green area, may be displayed when the corresponding storage-supply unit has a pressure greater than the reserve pressure; an area of another color, such as an orange zone for example, can be displayed when the pressure of the corresponding storage unit is substantially equal to the pressure of

PRE reserve.

  When none of the aforementioned zones is displayed, then the pressure of the storage-supply unit corresponds to a pressure lower than

reserve pressure.

  FIG. 5a corresponds to a display matrix of the type

  pie chart, while Figure 5b corresponds to a linear display matrix.

  In FIGS. 5a and 5b, the storage-supply unit T1 is considered empty or, at the very least, considered to have a lower pressure than the reserve pressure, the storage-supply units T2 and T3 are deemed to be at a pressure equal to the reserve pressure and the supply storage units T4, T5 and T6 are deemed to have a pressure greater than the pressure

reserve.

Claims (13)

  A method of sequentially and cyclically emptying / filling a fluid storage-supply assembly having a plurality of fluid storage-supply units each filled at a filling pressure and connected in parallel through a individual valve, each storage-supply unit and the individual valve associated with it being identified by a separate reference number, characterized in that it consists for at least, for a current cycle of emptying / filling operations: - to emptying one by one and in turn, depending on their use, any fluid storage unit, identified by its reference number, whose pressure is greater than a final pressure, to generate a subset of emptyed storage-fluid supply units, said storage-fluid supply assembly comprising, after said emptying operation, said penny s-set of emptied fluid storage units and a subset of unsupplied, full fluid supply storage units complementing said subset of fluid storage-supply units drained into said storage assembly; filling said emptyed fluid storage-supply units, filled with fluid by the reference number thereof, with filling fluid to generate a subset of filled fluid storage-supply units and reordering, at least partially, said subset of undrained fluid storage units and said subset of filled fluid storage-supply units for generating a set of reordered fluid storage-supply units; subjecting said set of reordered storage-feeding units to any subsequent emptying / filling cycle subsequent to the current cycle, the emptying, filling and reordering operations being applied in whole or in part to each set of non-drained fluid storage-supply units and / or filled fluid storage units obtained successively after each operation   consisting of reordering, at least partially.   2. Method according to claim 1, characterized in that said emptying operation consists in bringing the pressure of each fluid storage-supply unit subjected to this operation to a final pressure. substantially zero or residual.   3. Method according to claim 1, characterized in that said   final pressure is a gas reserve pressure.   4. Method according to one of claims 1 to 3, characterized in that   when, during use and emptying, all the food storage units have reached their reserve pressure, the emptying is continued for use of the storage-feeding units, one by one and in turn, until the relative vacuum pressure.   5. Method according to claim 4, characterized in that, at filling, the empty storage-supply units, or whose pressure is lower than the reserve pressure, are brought back to said reserve pressure,   by a controlled reserve filling.   6. Method according to one of claims 1 to 5, characterized in that   said filling operation consists in introducing, in each empty fluid storage-supply unit, a quantity of fluid bringing the pressure of said fluid into said storage unit   fluid at a value substantially equal to the filling pressure.   7. Method according to claim 6, characterized in that, for a final pressure of said fluid in said storage-supply unit less than the reserve pressure, said filling operation consists in succession of: - restoring said food storage unit to the reserve pressure, by a controlled reserve filling, and - to be filled, at the filling pressure, by filling   standard, said filling unit reduced to the reserve pressure.   8. Method according to one of claims 1 to 7, characterized in that   said subset of undrained fluid storage-supply units and said subset of filled fluid storage-supply units are each defined by a data structure comprising the reference number identifying each supply storage unit in operation; fluid   and the individual valve associated therewith, constituting each subassembly respectively.   9. Method according to claim 8, characterized in that, for a data structure consisting of a list of said reference numbers, said operation consisting in reordering, at least partially, said subset of storage units-un-drained fluid supply and said subset of filled fluid supply units is to concatenate said list of said reference numbers defining said subset of undrained storage units and said list of said reference numbers defining said subset of filled storage units. , said list of undrained storage units and said undrained storage units being prioritized for execution of any operation cycle   subsequent emptying / filling.   10. A sequential and cyclic emptying / filling installation of a fluid storage-supply assembly comprising a plurality of fluid storage-supply units each filled with a filling pressure and connected in parallel via a individual valve, each storage-supply unit and the individual valve associated therewith being identified by at least one separate number, constituting an address, characterized in that it comprises at least, associated with each storage-supply unit in fluid: - pressure sensor means, allowing, as a function of the pressure measured in each fluid storage-supply unit, to deliver at least one empty full storage-supply unit information; and sequential and cyclic control means of each of said individual valves, from said at least one empty storage-supply unit pressure information respectively empty and from said distinct number constituting said address, which makes it possible to empty a to one and in turn, depending on their use, any unit of supplyagainment fluid, whose pressure is greater than a final pressure, and then to fill in fluid at said filling pressure each storage unit-empty fluid supply, during a dump / fill cycle. 11. Installation according to claim 10, characterized in that said control means comprise, for each emptying / filling cycle: - means of discrimination, among the set of supplyagelement fluid comprising a plurality of units of stockagelementation, the subassembly of undrained fluid storage-supply units during said current drain / fill cycle and sub-set of fluid storage-supply units filled during said current drain / fill cycle; and - at least partial reordering means of said undumped fluid storage and supply subassemblies and subset of filled fluid storage-supply units for generating a set of fluid storage-supply units. reordering on which at least one empty / refill cycle subsequent to said cycle of   dump / fill current is applied.   12. Installation according to claim 11, characterized in that said reordering means comprise means for calculating data structures comprising the reference number or address identifying each storage unit-fluid supply and the individual valve associated therewith a first data structure defining the subset of undrained fluid storage-supply units and a second data structure defining the subset of fluid storage-supply units filled during said current cycle, the set corresponding reordered fluid storage-supply units   at the meeting of the first and second data structures.   13. Installation according to claim 12, characterized in that, during the meeting of said first and said second data structures, performed to generate said set of reorganized fluid supply units on which a subsequent emptying / filling cycle to said current dump / fill cycle is applied, the first data structure defining said subset of undrained fluid storage units, is given priority.