Swimming pool installation with buffer tubes for storing water from a water recovery network

Abstract

Swimming pool installation (1) comprising: - perimeter walls of the pool (20) arranged around a bottom wall of the pool (21) to internally delimit a pool (2); - support elements (3) fixed externally to the perimeter walls of the pool and arranged around the pool; - buffer tubes (4) used for water storage and which are supported by the support elements so as to extend around the pool; - a water recovery network (6), for example for rainwater and / or wastewater recovery, which is fluidly connected to the buffer tubes in order to fill them with water; and - a hydraulic distribution system which is fluidly connected to the buffer tubes and which is equipped with at least one distribution pump (70) to distribute the water stored in the buffer tubes (4).

Description

[Technical field]

[0001] The invention relates to a swimming pool installation equipped with buffer tubes for storing water from a water recovery network, and in particular from rainwater and / or wastewater recovery.

[0002] It relates more specifically to a swimming pool installation that offers a water storage solution recovered by a water recovery network.

[0003] The invention finds a favorite, but not limited, application in swimming pool installations intended for private individuals or communities. [State of the art]

[0004] As is known, recovered water, whether from a rainwater harvesting network or a wastewater recovery network, is stored in dedicated recovery tanks, usually buried underground.

[0005] The disadvantages of such an underground recovery tank are that it requires a dedicated space in the ground, and therefore a dead area for the garden, and that it also requires burial and earthmoving work which negatively impacts the installation cost.

[0006] The state of the art can also be illustrated by the teachings of document FR 2 696 204 A1, which discloses a weir swimming pool installation comprising a water basin and a continuous or discontinuous peripheral channel acting as a secondary accumulation tank intended to receive the water that overflows over an edge and to transport it, through a primary accumulation tank, to a filtration, treatment and recycling installation of this water back to the basin, where this primary accumulation tank is formed of at least one tubular collector placed all around the basin, at a level lower than that of the secondary accumulation tank.

[0007] However, such a pool installation with an overflow is neither planned nor suitable in terms of volume for the recovery of water from a rainwater recovery network or a wastewater recovery network. [Summary of the invention]

[0008] To address the ecological challenges of recovering, storing and reusing reclaimed water, the invention offers an economical solution, in that it takes advantage of a swimming pool, and more specifically of a construction site for an in-ground or semi-in-ground swimming pool, to install means of storing water from a water recovery network.

[0009] One aim of the invention is to optimize the space for the installation of a recovery water storage volume.

[0010] To this end, the invention proposes a swimming pool installation comprising: peripheral basin walls arranged around a bottom wall of the basin to internally delimit a basin; support elements fixed externally to the peripheral basin walls and arranged around the basin; buffer tubes used for water storage and which are supported by the support elements so as to extend around the basin; a water recovery network, for example for rainwater and / or wastewater recovery, which is fluidly connected to the buffer tubes in order to fill them with water; and a hydraulic distribution system which is fluidly connected to the buffer tubes and which is equipped with at least one distribution pump to distribute the water stored in the buffer tubes.

[0011] Thus, the invention proposes, during the construction of a swimming pool, the use of support elements that serve both to support the perimeter walls of the pool and to support the buffer tanks. In this way, these support elements form structural stiffening elements that contribute to the mechanical stability of the pool against the horizontal pressure exerted by the water contained in the pool on the perimeter walls, while also supporting the buffer tanks, which are thus protected once buried.

[0012] Furthermore, the installation of the buffer pipes, which serve as storage tanks for water from the rainwater harvesting system, is carried out simultaneously with the construction of the in-ground or semi-in-ground pool, eliminating the need for any subsequent burial work. In other words, the burial and excavation work is completed in a single operation during the pool's construction. Moreover, by positioning the buffer pipes around the pool basin, the invention reduces the ground space required for the rainwater storage volume compared to a solution based on a conventional underground rainwater harvesting tank.

[0013] With this pool installation, the recovered water is channeled into buffer tubes positioned around the pool before being distributed according to use and needs via the hydraulic distribution system. Thus, the invention proposes combining the classic and recreational use of the pool with the ecological and economical use of recovered water storage.

[0014] According to one characteristic, the support elements each have at least two support stages which are superimposed one on top of the other, so as to support buffer tubes superimposed one on top of the other.

[0015] Thus, the buffer tubes extend around the basin and are stacked one on top of the other; the various support elements forming a kind of ladder between which the buffer tubes extend. This feature allows for several buffer tubes all around the basin without taking up too much space on the sides, by taking advantage of the height offered by the basin to "stack" the buffer tubes vertically. However, the buffer tubes are vertically offset, each supported by dedicated support levels, in order to ensure their mechanical reliability.

[0016] According to one possibility, the water recovery network is equipped with at least one filtration device upstream of the buffer tubes, so as to filter the recovered water before storage in the buffer tubes.

[0017] According to another possibility, the water recovery network is equipped with an overflow upstream of the buffer tubes, so as to evacuate excess water when the buffer tubes are all full.

[0018] In a particular embodiment, the swimming pool installation includes a pool treatment system comprising: a pond pump connected to a pond filter via a multiport valve; a suction circuit connected to the pond pump and equipped with at least one suction pipe fitted with a suction inlet on the pond; a discharge circuit connected, via the multiport valve, to the pond pump and equipped with at least one discharge pipe fitted with a discharge inlet on the pond; and a purge circuit connected, via the multiport valve, to the pond pump and equipped with at least one purge pipe.

[0019] According to one characteristic, at least one suction pipe and / or at least one discharge pipe is at least partially supported by at least some of the support elements next to the buffer tubes.

[0020] Thus, the suction pipe(s) and / or the discharge pipe(s) are supported by the support elements, which improves the durability of these pipes since there is no longer any stress exerted on them.

[0021] According to another characteristic, at least one purge pipe is equipped with a purge filter and is fluidly connected to at least one of the buffer tubes in order to fill it with purge water from the basin.

[0022] Thus, buffer tubes can also be used to collect and store purge water from the basin, particularly during a cleaning of the basin filter, preferably by passing through the purge filter which reduces the possible chlorine level.

[0023] In a particular embodiment, the hydraulic distribution system includes upstream of the distribution pump upstream distribution pipes which are, on the one hand, all connected to the distribution pump and, on the other hand, fluidly connected to the respective buffer tubes, each upstream distribution pipe being thus allocated to one of the buffer tubes which is its own and being fitted with a valve in order to draw water independently from the buffer tubes.

[0024] In this way, each buffer tube can be used / emptied independently for distribution related to a specific use.

[0025] In an advantageous embodiment, the hydraulic distribution system includes downstream of the distribution pump downstream distribution pipes which are, on the one hand, all connected to the distribution pump and, on the other hand, fluidly connected to separate distribution ports, each downstream distribution pipe being allocated to one of the distribution ports which is its own and being fitted with a valve in order to distribute the water independently to the distribution ports.

[0026] In this way, distribution can be done independently on each of the distribution ports, according to the user's needs.

[0027] Advantageously, the downstream distribution pipes include at least one of the following pipes: an irrigation pipe for outdoor irrigation, a domestic pipe for domestic use, a pond filling pipe for filling the pond.

[0028] According to one possibility, the water recovery network is connected to an overflow of the basin in order to fill the buffer tubes with water from this overflow.

[0029] Thus, buffer tubes can also be used to collect and store water from the overflow of the pool, particularly during a heavy rain event, preferably by passing through a filtration device which reduces the possible chlorine level.

[0030] In a particular embodiment, the support elements have respective uppermost peaks which are arranged in the same horizontal plane, and the pool installation includes struts extending between the peaks of at least two support elements and joined end to end to extend around the pool, and a pool coping which is fixed to said struts, for example with a bonding fixing.

[0031] Thus, the support elements extend the full height of the basin to support crossbeams that in turn support the basin's coping, adding a new function to these support elements beyond simply supporting the buffer tubes and structurally reinforcing the basin. These crossbeams also structurally stiffen the entire assembly formed by the support elements. It should be noted that these crossbeams can be in the form of profiles.

[0032] Advantageously, the spacers each have a recessed gutter section, in order to delimit together an external gutter around the basin.

[0033] In this way, the support elements also support the drainage channel, which is integrated into the butted crossbeams. The recessed section of the drainage channel thus forms a gutter-shaped section, for example, a U-shape, to collect runoff water, for example, from a terrace bordering the pool. The external drainage channel can extend around the entire perimeter of the pool, or alternatively, it can extend only a portion of the perimeter.

[0034] According to one possibility, the support elements each have a base fixed to a slab supporting the basin.

[0035] Thus, these support elements are fixed both to the peripheral walls of the basin and to the slab, usually a concrete slab.

[0036] According to another possibility, the support elements are joined together, step by step, thus stiffening the structure formed by the interconnected support elements.

[0037] The invention also relates to a method for manufacturing the swimming pool installation described above, comprising the following steps: pour a slab inside a cavity previously dug in the ground; form the basin on the slab using the peripheral basin walls arranged around the bottom wall of the basin; fix the support elements externally to the peripheral basin walls, said support elements being placed on the slab and arranged around the basin; mount the buffer tubes on the support elements so that they are supported by these support elements in order to extend around the basin; connect the buffer tubes fluidly to the water recovery network, for example rainwater and / or wastewater recovery, in order to fill the buffer tubes with water; and connect the buffer tubes fluidly to the distribution pump of the hydraulic distribution system in order to distribute the water stored in the buffer tubes. [Brief description of the figures]

[0038] Other features and advantages of the present invention will become apparent from the following detailed description, of a non-limiting example of implementation, made with reference to the accompanying figures in which: Figure 1 is a schematic top view of a swimming pool installation according to the invention; Figure 2 is a schematic cross-sectional and partial view of a swimming pool installation according to the invention in which a recovery network and a pool treatment system are schematically represented; Figure 3 is a schematic cross-sectional and partial view of a swimming pool installation according to the invention in which a hydraulic distribution system is schematically represented; Figure 4 is a schematic cross-sectional and partial view of a swimming pool installation according to the invention in which a spacer supporting a coping and presenting a gutter section is schematically represented; Figure 5is a schematic cross-sectional and partial view of a swimming pool installation according to the invention in which a peripheral wall of the pool is schematically represented in the form of a concrete panel; Figure 6 is a schematic cross-sectional and partial view of another swimming pool installation according to the invention. [Detailed description of one or more embodiments of the invention]

[0039] With reference to the Figure 1 , an in-ground or semi-in-ground swimming pool installation, according to the invention, comprises: an underground or semi-underground basin 2 comprising at least peripheral basin walls 20 arranged around a bottom basin wall 21 to internally delimit basin 2; support elements 3 fixed externally to the peripheral basin walls 20 and arranged around basin 2; buffer tubes 4 used for water storage and supported by the support elements 3 so as to extend around basin 2.

[0040] Basin 2 is preferably an underground basin. This basin 2 is provided inside a cavity previously dug in the ground, on a 90 slab, for example made of a concrete slab, preferably reinforced.

[0041] The walls 20 and 21 of basin 2 can be made of various materials, such as stainless steel, steel, a plastic material like PVC, wood, or any other suitable material. The perimeter walls of basin 20 can be made of assembled panels, such as concrete panels as illustrated in the diagram. Figure 5 .

[0042] Depending on the case, basin 2 will also include one or more waterproofing layers on the walls 20, 21 of basin 2. The bottom wall of basin 21 can thus be formed from such a waterproofing layer fixed to the slab 90. The waterproofing layer fixed to the slab 90 (and therefore partly forming the bottom wall of basin 21) can, in an example of an embodiment illustrated on the Figure 6 , extend beyond the bottom walls of basin 21 (outside of basin 2 therefore) and pass under the support elements 3.

[0043] Slab 90 is sized to extend beyond the bottom walls of basin 21, thus forming a peripheral band of slab 91 around the entire perimeter of the bottom wall of basin 21. As visible on the Figures 2 to 6The support elements 3 are fixed to this peripheral strip of slab 91, for example by screwing, bolting, or other means of fixing / fastening. Thus, each of the support elements 3 has a base 30 fixed to the slab 90 supporting the basin 2. In the example of the Figure 5 , the base 30 of at least one of the support elements 3 can be fixed on the slab 90 with the interposition of adjustable feet 33, previously adjusted to the correct height, before fixing on the slab 90.

[0044] As seen on the Figure 1 The support elements 3 are arranged around the perimeter of the basin 2 and are spaced apart, for example at regular intervals. The support elements 3 are thus positioned outside the basin 2 and are also fixed to the peripheral walls of the basin 20, for example by screwing, bolting, or other means of fixing / strengthening.

[0045] These support elements 3 preferably extend over substantially the entire height / depth of the basin 2, so that these support elements 3 can have varying or distinct heights if the basin 2 has a varying height / depth. These support elements 3 serve to structure the basin 2, supporting the perimeter walls of the basin 20, in the manner of struts or braces.

[0046] The support elements 3 have respective upper vertices 31 which are arranged in the same horizontal plane, and the pool installation 1 includes spacers 5 (of the profile type) extending between the vertices 31 of at least two support elements 3 and assembled end to end to extend around the pool 2. These spacers 5 make it possible to connect the support elements 3 to each other, step by step, thus stiffening the structure of the pool installation 1. The support elements 3 are therefore linked and locked together by their vertices 31, allowing total rigidity of the structure.

[0047] Furthermore, and as can be seen on the Figures 2 to 4 And 6 The pool installation 1 includes a coping 22 for the basin 2, which is fixed to these spacers 5, for example, by gluing. Thus, the support elements 3, via the spacers 5, also serve to support the coping 22 of the basin 2.

[0048] In the implementation of the Figure 4 The spacers 5 extend outwards from the coping 22 and the support elements 3, each presenting a recessed section of the channel 50, thus together defining an external channel 51 around the basin 2. The external channel 51 is offset from the coping 22 and is preferably covered by a grate 54; this grate 54, for example, extending from a terrace 92 to collect the water running off this terrace 92 into the external channel 51. The external channel 51 is also schematically illustrated on the Figure 2 .

[0049] The support elements 3 each have at least two support tiers 32 which are stacked one above the other, so as to support at least two buffer tubes 4 stacked one above the other. In the examples illustrated on the Figures 2 to 6The support elements 3 each have three support tiers 32 stacked one above the other, so as to support three vertically stacked buffer tubes 4. The support elements 3 thus form a kind of ladder, made, for example, of metal or a metal alloy such as steel. The support elements 3 are therefore also buried, along with the buffer tubes 4, in the cavity excavated in the ground, before being covered.

[0050] Buffer tubes 4 extend between the supporting elements 3 and can be composed of tubular sections joined end-to-end in a watertight manner. Buffer tubes 4 can have circular or other cross-sectional shapes. Buffer tubes 4 can be made of a plastic material, such as PVC or PET, or of another material suitable for storing water in a watertight manner.

[0051] Pool installation 1 also includes: a water recovery network 6, shown schematically on the Figure 6 , which is fluidly connected to the buffer tubes 4 in order to fill them with water; and a hydraulic distribution system 7, schematically shown on the Figure 3 , which is fluidly connected to buffer tubes 4 and which is equipped with at least one distribution pump 70 to distribute the water stored in buffer tubes 4.

[0052] The water recovery network 6 can be a rainwater and / or wastewater recovery network.

[0053] Rainwater harvesting can be carried out, for example, at the level of one or more gutters of a building, and also, for example, at the level of the exterior gutter 51, as illustrated on the Figure 2 Wastewater recovery can be carried out at the level of one or more sanitary wastewater drains connected, for example, to washbasins, sinks, showers, bathtubs, etc.

[0054] With reference to the Figure 2 , this water recovery network 6 can be equipped with at least one filtration device 60 upstream of the buffer tubes 4, in order to filter at least partially the recovered water before storage in the buffer tubes 4.

[0055] This water recovery network 6 can be equipped with an overflow 61 upstream of the buffer tubes 4, in order to evacuate excess recovery water if the buffer tubes 4 are full.

[0056] With reference to the Figure 2 , the water recovery network 6 can be connected to an overflow 23 of the basin 2 (via a crossing of one of the peripheral walls of basin 20) in order to be able to fill the buffer tubes 4 with water from this overflow 23.

[0057] As seen on the Figure 3The hydraulic distribution system 7 may include upstream of the distribution pump 70 upstream distribution pipes 71 which are, on the one hand, all connected to the distribution pump 70 and, on the other hand, fluidly connected to the respective buffer tubes 4, each upstream distribution pipe 71 being thus allocated to one of the buffer tubes 4 which has its own and is equipped with a valve 72. Thus, by playing on the openings / closings of the valves 72 of each of the upstream distribution pipes 71, it is possible to draw water independently from the buffer tubes 4.

[0058] In an illustrated variant Figure 1 , the hydraulic distribution system 7 includes a sealed tank 77 into which each of the buffer tubes 4 opens (possibly via a valve 72) and the distribution pump 70 is connected to said sealed tank 77.

[0059] Furthermore, and as can be seen on the Figure 3The hydraulic distribution system 7 comprises, downstream of the distribution pump 70, downstream distribution pipes 73 which are, on the one hand, all connected to the distribution pump 70 and, on the other hand, fluidly connected to separate distribution ports 74, each downstream distribution pipe 73 being allocated to one of the distribution ports 74 which has its own and being equipped with a valve 75. Thus, by playing on the openings / closings of the valves 75 of each of the upstream distribution pipes 74, it is possible to distribute the water (from at least one of the buffer tubes 4) independently on the downstream distribution pipes 73, and therefore on the distribution ports 74.

[0060] For example, downstream distribution pipes 73 include at least one of the following: a sprinkler pipe for outdoor watering, a domestic pipe for domestic use, a pond filling pipe to fill pond 2. In the last example, and as can be seen on the Figure 3 , one of the downstream distribution pipes 73 passes through one of the peripheral walls of basin 20, so that the associated distribution port 74 opens at the level of the interior of basin 2.

[0061] With reference to the Figure 2 The pool installation 1 includes a treatment system 8 for pool 2 comprising: a pond pump 80 connected to a pond filter 81 via a multiport valve 82; a suction circuit connected to the pond pump 80 and equipped with at least one suction pipe 83 fitted with a suction inlet 84, 85 provided on pond 2, such as for example a skimmer 84 and / or a bottom drain 85 as illustrated on the Figure 1 ; a discharge circuit connected, via the multiport valve 82, to the basin pump 80 and which is equipped with at least one discharge pipe 86 fitted with a discharge inlet 87 (visible in Figure 1 ) planned on basin 2; and a purge circuit connected, via the multi-way valve 82, to the basin pump 80 and which is equipped with at least one purge pipe 88.

[0062] Thus, in the filtration position of the multiport valve 82, water from basin 2 is drawn in at the suction inlet(s) 84, 85, passes through the basin filter 81, and is then discharged through the discharge inlet(s) 87. In the purge position of the multiport valve 82, water from basin 2 is drawn in at the suction inlet(s) 84, 85, and is discharged directly via the purge pipe(s) 88. In the cleaning position of the multiport valve 82, water from basin 2 is drawn in at the suction inlet(s) 84, 85, passes through the basin filter 81 to clean it, and is then discharged via the purge pipe(s) 88. Other positions are, of course, possible to achieve different water circulation patterns in basin 2.

[0063] Advantageously, at least one suction pipe 83 and / or at least one discharge pipe 86 is at least partially supported by at least some of the support elements 3 next to the buffer tubes 4. Thus, the suction pipe(s) 83 can be supported by all or part of the support elements 3. Similarly, the discharge pipe(s) 86 can be supported by all or part of the support elements 3. The support elements 3 can therefore also serve to support such pipes 83, 86.

[0064] According to one possibility, at least one drain pipe 88 is fitted with a drain filter 89 and is fluidly connected to at least one of the buffer tubes 4 in order to fill them with drain water from basin 2. In other words, the water drawn into basin 2 can be introduced into at least one of the buffer tubes 4 for storage there, after filtration via the drain filter 89 (for example, filtration to remove chlorine and / or chlorine derivatives).

Claims

1. A swimming pool installation (1) comprising: - basin peripheral walls (20) disposed around a basin bottom wall (21) to internally define a basin (2); - struts (3) fastened externally to the basin peripheral walls (20) and disposed around the basin (2); - buffer tubes (4) used for storing water and which are supported by the struts (3) so as to extend around the basin (2); - a water recovery network (6), for example for recovering rainwater and / or used sanitary water, which is fluidically connected to the buffer tubes (4) in order to fill them with water; and - a hydraulic distribution system (7) which is fluidically connected to the buffer tubes (4) and which is provided with at least one distribution pump (70) for distributing the water stored in the buffer tubes (4); characterized in that each of the struts (3) has at least two support stages (32) which are superposed one above the other, so as to support buffer tubes (4) superposed one above the other.

2. The swimming pool installation (1) according to claim 1, wherein the water recovery network (6) is provided with at least one filtration device (60) upstream of the buffer tubes (4).

3. The swimming pool installation (1) according to any one of the preceding claims, wherein the water recovery network (6) is provided with an overflow (61) upstream of the buffer tubes (4).

4. The swimming pool installation (1) according to any one of the preceding claims, comprising a system for treating (8) the basin (2), comprising: - a basin pump (80) attached to a basin filter (81) via a multi-port valve (82); - a suction circuit attached to the basin pump (80) and which is provided with at least one suction pipe (83) equipped with a suction port (84, 85) provided on the basin (2); - a discharge circuit attached, via the multi-port valve (82), to the basin pump (80) and which is provided with at least one discharge pipe (86) equipped with a discharge port (87) provided on the basin (2); and - a purge circuit attached, via the multi-port valve (82), to the basin pump (80) and which is provided with at least one purge pipe (88); and wherein the at least one suction pipe (83) and / or the at least one discharge pipe (86) is at least partially supported by at least a part of the struts (3) next to the buffer tubes (4).

5. The swimming pool installation (1) according to claim 4, wherein the at least one purge pipe (88) is provided with a purge filter (89) and is fluidically connected to at least one of the buffer tubes (4) in order to fill it with purge water coming from the basin (2).

6. The swimming pool installation (1) according to any one of the preceding claims, wherein the hydraulic distribution system (7) comprises, upstream of the distribution pump (70), upstream distribution pipes (71) which are all connected, on one side, to the distribution pump (70), and on the other side, fluidically connected to the respective buffer tubes (4), each upstream distribution pipe (71) being thus assigned to a respective one of the buffer tubes (4) and being provided with a valve (72) in order to independently suck water from the buffer tubes (4).

7. The swimming pool installation (1) according to any one of the preceding claims, wherein the hydraulic distribution system (7) comprises, downstream of the distribution pump (70), downstream distribution pipes (73) which are all connected, on one side, to the distribution pump (70), and on the other side, fluidically connected to distinct distribution ports (74), each downstream distribution pipe (73) being thus assigned to a respective one of the distribution ports (74) and being provided with a valve (75) in order to distribute the water independently to the distribution ports (74).

8. The swimming pool installation (1) according to claim 7, wherein the downstream distribution pipes (73) comprise at least one of the following pipes: a watering pipe for outdoor irrigation, a domestic pipe for domestic use, a basin filling pipe for filling the basin (2).

9. The swimming pool installation (1) according to any one of the preceding claims, wherein the water recovery network (6) is attached to an overflow (23) of the basin (2) to be able to fill the buffer tubes (4) with water coming from this overflow (23).

10. The swimming pool installation (1) according to any one of the preceding claims, wherein the struts (3) have respective top portions (31) which are disposed in the same horizontal plane, and the swimming pool installation (1) comprises spacers (5) extending between the top portions (31) of at least two struts (3) and assembled end-to-end so as to extend around the basin (2), and a coping (22) for the basin (2) which is fastened on said spacers (5), for example by adhesive fastening.

11. The swimming pool installation (1) according to claim 10, wherein each of the spacers (5) has a recessed gutter section (50), so as to together define an outer gutter (51) around the basin (2).

12. The swimming pool installation (1) according to any one of the preceding claims, wherein each of the struts (3) has a base (30) fastened on a slab (90) supporting the basin (2).

13. The swimming pool installation (1) according to any one of the preceding claims, wherein the struts (3) are secured to one another in a stepwise manner.

14. A method for manufacturing the swimming pool installation (1) according to any one of the preceding claims, comprising the following steps: - pouring a slab (90) inside a cavity previously dug in the ground; - forming the basin (2) on the slab by means of the basin peripheral walls (20) disposed around the basin bottom wall (21); - fastening the struts (3) externally onto the basin peripheral walls (20), said struts (3) being placed on the slab (90) and disposed around the basin (2); - mounting the buffer tubes (4) on the struts (3) in order to be supported by these struts (3) in order to extend around the basin (2), wherein each of the struts (3) has at least two support stages (32) which are superposed one above the other, so as to support buffer tubes (4) superposed one above the other; - fluidically connecting the buffer tubes (4) to the water recovery network (6), for example for recovering rainwater and / or used sanitary water, to be able to fill the buffer tubes (4) with water; and - fluidically connecting the buffer tubes (4) to the distribution pump (70) of the hydraulic distribution system (7) to be able to distribute the water stored in the buffer tubes (4).

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