Assembly comprising a basin and a basin cover device.

Abstract

An assembly (0) comprising a basin (1) having a peripheral outer edge (1a) of the basin (1) and a cover device (2) for the basin (1) comprising: - a plurality of cables (2a) stretched between first and second parts (2a1, 2a2) of the cables (2a); and - at least one cover tarpaulin (3) supported by the cables to define a cover surface disposed over the basin (1). The cover device (2) comprises a support (4) disposed in the basin (2) to support said plurality of cables (2a) over the basin (2) and to generate at least one slope of said tarpaulin such that water on an upper face of said tarpaulin flows from the support to an area external to the basin by passing over the peripheral outer edge (1a) of the basin (1). [Figure from the summary: Fig. 1]

Description

Title of the invention: Assembly comprising a basin and a basin cover device.

[0001] The present invention relates to the field of basins and covers for such basins.

[0002] BACKGROUND OF THE INVENTION

[0003] For the storage of materials, for example agricultural materials that are more or less fluid, such as slurry, it is known to use large basins.

[0004] Such basins have lengths and widths exceeding several tens of meters, sometimes on the order of one to several hundred meters.

[0005] With such a large basin area, it is common to seek to limit the supply of rainwater to the basin.

[0006] For this purpose, it is known to provide a basin cover device comprising one or more tarpaulins stretched over the basin.

[0007] The risks of degradation / dilution of the material contained in the basin and of accidental overflow of the basin are thus minimized.

[0008] However, pockets of rainwater regularly form on the upper surface of the tarpaulin and it is then necessary to remove the water using pumping pipes or pumps which are arranged above the tarpaulin.

[0009] The pumping lines and / or pumps must be regularly checked and repositioned to ensure that the pockets of water present on the tarpaulin are properly evacuated.

[0010] Monitoring / maintenance of pipes and pumps is essential to preserve the liner, the basin and the material contained in the basin.

[0011] Furthermore, any intervention on the basin requires the prior removal of the pipes / pumps to free the cover and thus access the internal volume of the basin.

[0012] Interventions on pipes and pumps can also generate damage to the tank(s), which increases maintenance time and the overall operating cost.

[0013] SUBJECT OF THE INVENTION

[0014] An object of the present invention is therefore to provide an assembly comprising a basin and a basin cover device solving all or part of the aforementioned disadvantages of the prior art. Summary of the invention

[0015] To this end, the invention essentially relates to an assembly comprising a basin having a peripheral outer edge of the basin and a basin cover device, the cover device comprising: - a plurality of cables, each given cable of the plurality of cables being stretched between first and second parts of the given cable; and - at least one cover tarpaulin supported by at least some of the cables of the plurality of cables to define a cover surface arranged above the basin.

[0016] The assembly according to the invention is essentially characterized in that the device comprises a support disposed in the basin to support said plurality of cables above the basin and generate at least one slope of said at least one tarpaulin such that water located on an upper face of said at least one tarpaulin flows from the support to an area external to the basin by passing over the peripheral outer edge of the basin.

[0017] Such a support positioned in the basin is particularly advantageous because it allows: - to support the cables that carry the tarpaulin (by absorbing the vertical forces exerted by the cables stretched across the support); and - to create a slope on the upper face of the tarpaulin to guide a flow of water over the tarpaulin from the support towards the outside of the basin.

[0018] This avoids the formation of water pockets on said at least one tarpaulin and eliminates the need to position pipes or pumps to collect water present on the upper surface of the tarpaulin.

[0019] Preferably, the cover device includes at least one agitator which has stirring blades and at least one motorization to move the blades in the basin (around an axis of rotation X of the agitator) and to agitate a fluid material contained in the basin.

[0020] Said at least one agitator is carried by said support.

[0021] In many applications, the material stored in the basin must be agitated to maintain its homogeneity (the agitator limits the risk of sedimentation of the material or the risk of the formation of a skin or dry aggregates on the surface).

[0022] Preferably, the fluid material M contained in the basin 1 is here slurry which must be regularly mixed to avoid the formation of solidified aggregates which are difficult to remove from the basin.

[0023] The fact that the support carrying the cables of the cover device also supports the agitator makes it easier to position the agitator in the basin since the cables contribute to the stability of the support and consequently to the stability of the agitator relative to the edge of the basin, the agitator being able to be easily centered in the basin.

[0024] It should be noted that the blades can be entirely arranged in a space formed between the uprights of the support, these uprights forming a protection to prevent accidental contact with the blades. Brief description of the drawings

[0025] Other features and advantages of the invention will become clear from the following description, which is by way of example and not limitation, with reference to the accompanying drawings, in which:

[0026] [Fig-1] [Fig.1] is a cross-sectional view of an assembly 0 according to the invention where we see the basin 1 in which is positioned a support 4 on which pass cables 2a of a plurality of tensioned cables, a cover tarpaulin 3 is carried by the cables 2a to form slopes on the tarpaulin, each slope is oriented to force the flow of rainwater on the tarpaulin towards the outer edge la of the basin 1;

[0027] [Fig.2] [Fig.2] is a top view of assembly 0 illustrated in [Fig.1], this [Fig.2] shows the support 4 in top view as well as the plurality of cables 2a which extend between sides of the peripheral outer edge la passing over the support 4, these cables 2a are tensioned to support the tarpaulin 3 and are connected to the support 4 so as to create downward slopes of the tarpaulin, each slope going from the support 4 towards the outside of the basin (the tarpaulin 3 is shown in dotted lines on [Fig.1]), several agitators 5 arranged to agitate the material M in the basin are carried by the support 4;

[0028] [Fig.3] [Fig.3] is a top view of a part of assembly 0 according to the invention where we see part of the support 4 on which the cables 2a of the plurality of cables pass, each first part 2al of a given cable 2a is fixed on one of the fasteners 6 which is its own and which is assembled to the outer edge la of the basin 1, the cables are thus stretched between the fasteners 6 and the support 4 to create the slope of the cover, a plurality of guides 41 is carried by the support 4 to guide and position the cables 2a in relation to the support 4;

[0029] [Fig.4a] [Fig.4a] is a detailed view of part of assembly 0 according to the invention illustrated in [Fig.3], this [Fig.4a] shows the guides 41 in top view;

[0030] [Fig.4b] [Fig.4b] is a side view of the guides 41 illustrated in [Fig.4a], each guide 41 having a vertical axis 41x for fixing the guide 41 on the support 3 and a sliding piece 41b mounted around the corresponding axis 41x, these axes 41x being parallel to each other and being fixedly connected to the support 4;

[0031] [Fig. 5a] [Fig. 5a] is a front view of an example of a fastener 6 fixed to the edge external to the basin 1 to position and tension at least one cable 2a corresponding to the attachment 6;

[0032] [Fig.5b] [Fig.5b] is a side view of the attachment 6 of [Fig.5a] showing the attachment of this attachment to the outer edge la of the basin 1 by means of two fixing pins 61 sealed to the edge of the basin la;

[0033] [Fig. 6] [Fig. 6] is a top view of assembly 0 similar to that illustrated in [Fig. 2], the only difference being that basin 1 is circular instead of rectangular, support 4, in top view, is rectangular, guides 41 arranged on support 4 allow the cables 2a to be positioned and guided above basin 1, while fasteners 6 arranged along the outer edge la of basin 1 allow each cable 2a to be tensioned between the edge of the basin and support 4 to support one or more tarpaulins above the basin while creating the tarpaulin slopes descending from support 4 to the outer edge la. DETAILED DESCRIPTION OF THE INVENTION

[0034] As previously stated, the invention relates to an assembly 0 comprising a basin 1 having a peripheral external edge la and a covering device 2 for the basin 1.

[0035] As can be understood from Figures 1 and 2, the cover device 2 comprises: - a plurality of cables 2a, each given cable 2a of the plurality of cables 2a being stretched between first and second parts 2a1, 2a2 of the given cable 2a; and - at least one cover tarpaulin 3 (illustrated in dotted lines on [Fig.1]) supported by at least some of the cables 2a of the plurality of cables to define a cover surface disposed over the basin 1.

[0036] Device 2 comprises: - a support 4 arranged in basin 2 to support said plurality of cables 2a above basin 2 and to generate at least one slope of said at least one tarpaulin such that water lying on an upper face of said at least one tarpaulin 3 flows from support 4 to an area outside the basin by passing over the outer peripheral edge of basin 1.

[0037] The tarpaulin is preferably waterproof, for this purpose the tarpaulin 3 can be made of PVC or HDPE.

[0038] Preferably, each cover is also gas-tight, which is particularly useful for applications where it is desired to collect gases released by the material M contained in the basin.

[0039] Basin 1 includes a sealing membrane extending continuously across the bottom of the basin.

[0040] This basin 1 can be created by digging the ground and / or by constructing an external edge around the perimeter of the basin, this external edge extending above a ground level.

[0041] In top view, the shape and dimensions of the outer edge of the basin 1 can vary according to need. For example, the basin can be rectangular, as in the example in [Fig.2], or it can be circular, as in the example in [Fig.6].

[0042] The shapes of the basin are in no way limiting because the set of cables arranged between the support 4 and the outer edge of the basin where the cables are attached (via fasteners 6) makes it possible to cover a wide variety of basin shapes.

[0043] The support 4 can simply be placed on the bottom of the basin, the waterproofing membrane preferentially extending under one or more feet of the support 4, which promotes the waterproofing of the basin while simplifying the installation of the support 4 in the basin 1.

[0044] Alternatively, it is also possible to create a sealed base of the support against which the sealing membrane is connected to the seal by going up along and all around this base of the support.

[0045] The support 4 here forms a ridge of the cover device 2 of basin 1, this cover device 2 comprising at least two sides or, as in the present case, four sides.

[0046] At least one of the sections is covered, at least in part, by the tarpaulin 3 to create a downward slope extending from the support 4 towards the outer edge la of the basin 1.

[0047] The cover device 2 may include one or more tarpaulins 3 to define the downward slopes of the cover, the device 2 covering the entire basin 1. These tarpaulins may be connected to each other by means of assembly which are watertight and possibly gastight, such as welds or glued tarpaulin joints.

[0048] As previously stated, said covering device 2 preferably comprises at least one agitator 5.

[0049] In this case, in the example illustrated in figures 1 and 2, the device includes four agitators 5 to agitate the material M in the basin, in this case slurry.

[0050] Each agitator 5 includes stirring blades 5a and at least one motor 5b to move the blades 5a in the basin 1 and agitate a fluid material M there. These blades of an agitator 5 are here moved around an axis of rotation X of the agitator.

[0051] The rotation axes X are vertical here, but it is also possible that each rotation axis X has its own orientation (vertical or inclined) to generate a particular flow of matter M in basin 1.

[0052] Said fluid material M contained in basin 1 is here slurry which it is necessary to mix regularly to avoid the formation of solidified aggregates difficult to remove from basin 1.

[0053] The number and arrangement of the agitators 5 and the geometry of the blades are chosen according to the geometry of the basin to promote the movement of material M over the entire basin. This prevents the formation of crusts that are difficult to collect.

[0054] Preferably, each motorization 5b is placed above an upper plane Ps of basin 1 in which extends an upper face of the peripheral outer edge la of basin 1.

[0055] Preferably, each of the agitator blades 5a extends exclusively between a bottom of the basin 1 and said upper plane Ps of basin 1 (thus limiting the risk of material projection).

[0056] The positioning of the motorization 5b above the upper plane Ps of the basin 1 allows the motorization 5b to be kept away from the fluid material M.

[0057] This limits the risk of degradation of the 5b motor.

[0058] Here, each motorization 5b comprises at least one electric motor and possibly a geared motor.

[0059] Set 0 may also include: - a control device designed to control the operation of the motor, actuate the movement of the blades in the basin and possibly vary the rotational speed of the blades; and - a pump arranged to evacuate fluid matter M located in the basin.

[0060] The support 4 is here a tower having a base placed at the bottom of the basin 1 and having a top carrying each of said cables 2a of said plurality of cables 2a.

[0061] Preferably, the tower forming the support 4 comprises several uprights 4a extending in substantially vertical directions.

[0062] These uprights are parallel to each other here but they could be inclined relative to each other so that these uprights are closer together at the top of the tower than they are at the base.

[0063] The uprights 4a are preferably connected to each other by crossbeams and bracing links of the tower.

[0064] The motorization of the agitator 5 is preferably arranged between several of these uprights 4a of the tower, which allows it to be protected against shocks.

[0065] In the case illustrated in figures 1 and 2, the tower comprises at least four vertical uprights 4a, in this case ten parallel uprights 4a.

[0066] Each motorization 5b of a given agitator is located between four external uprights of the tower associated with it.

[0067] Each motorization 5b is preferably arranged equidistant from these associated uprights.

[0068] In this way, the forces generated by the motorization on the support are distributed equally between the uprights, which improves the stability of the cover device during the operation of the agitator.

[0069] As the cables 2a are taut and pass over the support 4, they help to stabilize the support, both vertically and laterally (the cables oppose the tilting of the support 4).

[0070] In summary, thanks to the invention, it is possible to implant one or more agitators 5 carried by the same support 4 which is securely held / anchored in the basin.

[0071] This anchoring of the support 4 by the cables 2a allows several agitators 5 to be installed without risk of damage to the basin or the cover device (the risk of accidental contact between the stirring blades 5a and the basin is minimized).

[0072] In the example of [Fig.2], four agitators 5 are carried by the tower and are shown schematically in dotted lines.

[0073] As can be seen in particular in figures 2 to 4b, the support 4 preferentially comprises a plurality of guides 41.

[0074] Each cable 2a of the plurality of cables 2a is laterally supported against at least one guide 41 which corresponds to it and which belongs to said plurality of guides 41.

[0075] The guides 41 are arranged to keep the cables 2a away from each other.

[0076] Preferably, as illustrated in [Fig.4b], at least some of the guides 41 comprise a sliding piece 41b having a groove 41bl.

[0077] Each given cable 2a in lateral support against a lateral guide 41 which corresponds to it passes through a groove 41bl of the sliding piece 41b corresponding to the given cable.

[0078] The cables 2a of the plurality of cables are distributed between at least the first and second cable groups Gl, G2.

[0079] The guides 41 of the plurality of guides are arranged on the support 4 so that the cables 2a of the first group Gl move apart from each other as they go from said support 4 towards the outer peripheral edge la of the basin 1.

[0080] The guides 41 are arranged on the support 4 so that the cables of the second group G2 are parallel to each other.

[0081] The plurality of cables also includes a third group G3 of cables 2a distinct from the cables belonging to the first and second groups Gl, G2.

[0082] The guides 41 of the plurality of guides are here arranged on the support 4 so that the cables 2a of the third group G3 move apart from each other as they go from said support 4 towards the outer peripheral edge of the basin 1.

[0083] Thus, the first group of cables Gl consists of the cables arranged at a first of the longitudinal ends of the support 4 observed in top view.

[0084] The cables of the first group G1 form a support for the tarpaulin radiating from the first longitudinal end of the support 4 to a part of the peripheral outer edge of the basin 1 opposite this first longitudinal end of the support 4.

[0085] The second group G2 is preferably made up of the cables arranged between the two longitudinal ends of the support 4, that is to say cables which, in view from above of the basin 1, extend along the width of the basin.

[0086] Above support 4, the cables of the second group G2 are parallel to each other.

[0087] The third group of cables G3 is preferably made up of the cables arranged one second from the longitudinal ends of the support 4 observed in top view.

[0088] These cables of the third group G3 form a support for the tarpaulin radiating from the second longitudinal end of the support 4 to a part of the peripheral outer edge of the basin 1 opposite the second longitudinal end of the support 4.

[0089] Thus, in top view, the first and third groups of radiating cables Gl, G3 respectively support the tarpaulin(s) along the first and second longitudinal ends of the support 4.

[0090] The second group of parallel cables G2 allows the tarpaulin(s) to be supported along the longitudinal edges of the support 4 up to at least one of the longitudinal edges of the basin.

[0091] These groups of cables Gl, G2, G3 form regularly spaced tarpaulin supports (all around the support 4) to support the tarpaulin(s) extending all around the support 4 up to at least the level of the peripheral edge la of the basin 1 so as to cover the whole of the basin with the tarpaulin(s).

[0092] With this arrangement of the cable groups Gl, G2, G3, it is possible to cover, with a single support 4 centered in the basin, a variety of basin types of different geometries, longer or shorter, wider or narrower.

[0093] It should be noted that the support 4 may have at least one upper beam extending above the basin, extending on either side of the tower.

[0094] Said guides 41 can be carried on said at least one upper beam.

[0095] In this way, without having to increase the dimensions of the tower, it is possible to cover a larger basin since the upper beam(s) extend beyond the tower to support at least some of the cables of the plurality of cables.

[0096] It is also conceivable that the support comprises several towers between which extend the said upper beam(s) of the support which support the cables.

[0097] As can be seen in particular in figures 3, 4a and 4b, the guides 41 are distributed so as to form first and second alignments of guides.

[0098] The guides of the first alignment L1 of guides 41 are arranged along a first upper side of said support 4 (optionally along a first upper beam) and the guides of the second alignment of guides 41 are arranged along a second upper side of said support 4 (optionally along the first beam or on a second beam parallel to the first beam of the support).

[0099] In the present case, each given guide 41 comprises a sliding piece 41b fixed around a fixed vertical axis 41x associated with the given sliding piece 41b.

[0100] Each fixed axis 41x is fixedly mounted relative to said support 4.

[0101] In this way, the cables 2a are guided relative to the support 4 by means of the parts sliding 41b (each sliding piece is circular 41b and centered around an axis 41x which corresponds to it and which is fixed relative to the support 4).

[0102] As illustrated in [Fig.4b], each given sliding piece 41b has a hollow profile 41bl in which a cable 2a associated with the given sliding piece is received.

[0103] Preferably, the sliding parts 41b are spaced apart from each other so that adjacent sliding parts together form a tight space to retain a cable between the support 4 and at least one upper edge of the adjacent sliding parts 41b.

[0104] Two adjacent sliding pieces 41b are shaped to have a cable passage space between adjacent sliding pieces 41b which is greater than the diameter of the cable passing between these adjacent pieces.

[0105] For example, the spacing between two adjacent sliding parts could be 11 mm for a cable with a diameter of 9 mm.

[0106] As illustrated in [Fig.4b], the narrow space between two adjacent sliding pieces 41b makes it possible to oppose the movement of the cable 2a along a direction parallel to the fixed axis of sliding piece 41x.

[0107] Thus, the risk of cable 2a being pulled out in the event of a strong gust of wind is largely minimized thanks to the hollow profiles 41bl of the sliding parts and the distance between adjacent sliding parts.

[0108] In this way, each given cable is held between two adjacent sliding parts and the only movement allowed for this cable is a tangential movement to the adjacent sliding parts.

[0109] Although this is not the case here, at least some of the sliding parts could be pulleys each mounted to rotate about a corresponding fixed axis 41x.

[0110] As can be understood from figures 1 to 3, each first part 2a 1 of given cable 2a is fixed on a first corresponding attachment 6 of said given cable 2a.

[0111] Similarly, each second part 2a2 of said given cable 2a is fixed on a second attachment corresponding to said given cable 2a.

[0112] Each of the fasteners 6 is fixedly connected with respect to the peripheral outer edge la of the pelvis 1.

[0113] Preferably, the fasteners 6 are regularly arranged along the outer edge of the basin 1, for example 50 cm apart.

[0114] Different forms of fasteners 6 are conceivable for the implementation of the invention.

[0115] In the present case, each given attachment 6 comprises a tube 60 for the passage of cable 2a around the tube 60 (or possibly in the tube) and at least one fixing pin 61 fixed in said peripheral outer edge la of the basin 1.

[0116] Spacers 62, in this case nuts 62, are arranged between the tube 60 and the upper face of the outer edge of the basin to create a cable passage space 2a between the tube 60 and the outer edge of the basin.

[0117] Here, each spacer 62 is formed by a nut screwed around a complementary threaded portion of one of the corresponding fixing axes 61.

[0118] Thus, each tube 60 allows the passage of a cable 2a between the edge of the basin and the tube 60 to guide it and position it relative to the edge of the basin 1.

[0119] A cable 2a positioned by a fastener 6 can be tensioned by sliding it relative to the tube 60 of the fastener 6.

[0120] In this way, each attachment has the shape of a mooring cleat around which the cable or cables can pass.

[0121] Locking means can be associated with the cable to maintain it under tension with respect to the attachment 6.

[0122] A locking means could include a knot formed with the cable and / or one or more cable clamps (for example, stainless steel cable clamps).

[0123] For example, the cable clamp(s) could be arranged to clamp together portions of the same cable which passes around the fastener 6 (for example, the cable can pass around the tube 60 of the fastener 6 by making a half turn, a turn or several turns).

[0124] The two cable sections can thus be clamped together by one or more cable clamps arranged in series on the cable to compress the cable sections against each other and prevent them from sliding relative to one another. Other locking means can be used to hold the cable on the given attachment 6.

[0125] For example, one could consider that the cable could simply be secured to the fastener 6 by making several dead turns around the tube 60 with the cable (for example three dead turns or more) then a locking knot as is done in the navy to lock a mooring line on a mooring cleat.

[0126] In the present case, as illustrated in Figures 5a, 5b, the tube 60 of the attachment 6 is held immobile relative to the peripheral outer edge la of the basin 1 via two fixing axes 61 also called anchor rods which are sealed in the peripheral outer edge la.

[0127] The outer peripheral edge of the basin 1 comprises several longitudinal members arranged end to end to define the outer peripheral edge of the basin.

[0128] Here, each stringer has first and second longitudinal ends forming the ends of stringers, these stringers being able to be cast pieces in reinforced concrete.

[0129] Each given fixing rod / axis 61 is for example fixed in one of the stringers which corresponds to it, either by sealing, or by molding the stringer around the fixing rod.

[0130] In this configuration, each cable 2a can pass between the fixing axes 61 of the corresponding attachment while sliding in a space formed between the tube and an upper face of the basin edge (here constituted by stringers).

[0131] As illustrated in Figures 2, 3 and 4a, each cable 2a has a central portion supported on said support 4 so that the central portion of the cable is held above a central area of ​​the basin 1.

[0132] In top view, the central area of ​​the basin is within the perimeter delimited by the outer peripheral edge of the basin 1.

[0133] As previously stated, support 4 is here a tower fixedly placed on the central area of ​​the basin.

[0134] In the present case, the basin 1 has four parallel sides in pairs which together constitute said peripheral outer edge la of the basin 1 which is here rectangular in shape.

[0135] More particularly, the central portions of the cables 2a are supported on an upper part of the support 4, in this case, on an upper plate extending horizontally to form a top of the support.

[0136] The majority of the central portions of the cables 2a which are on the support 4 extend parallel to each other, which limits friction between cables.

[0137] This is for example the case of the cables 2a of said second group of cables G2 illustrated in [Fig.2] of which central portions located above support 4 are all parallel to each other.

[0138] At least some of the cables 2a of the plurality of cables extend from one of said sides of the basin to another of said sides of the basin, which makes it possible to balance the forces exerted on both sides of the support 4.

[0139] Some cables of the first group of cables Gl, as well as some cables of the third group of cables G3, may have their respective first and second parts 2a1, 2a2 arranged at the level of the same side of the edge of the basin 1 to which they are attached.

[0140] Thanks to the sliding parts 41b, the tensions exerted on both sides of the support 4 by the cables 2a of the first and third groups Gl, G3 are balanced, which limits the risk of the support tipping over.

[0141] Finally, as shown schematically in [Fig.1], said at least one tank 3 is sealed against the passage of methane and is hermetically connected to said outer peripheral edge of the basin 1 so as to form between the basin 1 and the tank(s) 3, a gas containment enclosure E.

[0142] At least one gas outlet tube T is hermetically connected to said enclosure E to collect gases.

[0143] In the case where the material M contained in the basin is of a fermentable nature, such as slurry, a release of gas is obtained in the enclosure E which contains methane.

[0144] The invention makes it possible to equip pre-existing slurry storage basins 1 with a methane collection function.

[0145] This is all the more interesting since a majority of slurry storage basins lack such capacity.

[0146] The gas outlet tube T, schematically shown in [Fig.1], can be a tube with a diameter between 50 mm and 200 mm, preferably a tube with a diameter of 100 mm.

[0147] This T-tube can be connected to an external gas distribution network to assembly 0 or to a gas storage tank, this connection being able to be made either directly or via a pump and / or a compressor and / or a gas treatment installation.

[0148] A gas treatment plant can be adapted to separate gases from the enclosure into a methane stream and a stream of other gases such as sulfide gases.

[0149] This network and / or the tank can / can be connected to an industrial or agricultural installation or to one or more dwellings in order, for example, to supply gas-consuming appliances (such as gas combustion appliances like boilers and / or a fuel cell).

[0150] Said at least one gas outlet tube T may be hermetically connected: - to the tank 3 at a gas passage formed through the tank; or - connected to an upper plate of the support carrying a connector passing through this upper plate of the support, the tube then being connected to the enclosure via this connector carried by the support plate; or - connected to a connector fixed to the outer edge of the basin.

[0151] The connection between the tube T and the enclosure E can be mobile relative to the basin when the latter is supported by the tarpaulin.

[0152] This can be useful for equipping a pre-existing basin with a methane capture capacity by modifying only the liner.

[0153] The connection between the tube T and the enclosure E can be fixed relative to the basin 1 when this connection is carried by the upper plate of the support 4 or when it is fixed to the edge of the basin 1.

[0154] The advantage of having the tube T connected to the enclosure E via a top plate of the support 4 is to provide a support equipped with its own means of collecting the methane gas, which avoids having to modify the tarpaulin or the basin to assemble the tube.

[0155] One disadvantage of this solution is that it involves having the T-tube extending over at least half the width of the basin 1, above the tarpaulin 3, which complicates the installation and maintenance operations of the tube / enclosure connection.

[0156] The advantage of having the T-tube connected to the enclosure via a fixed connection at the outer peripheral edge of the basin is to avoid the need to modify the support 4 or the cover 3.

[0157] It is also advantageous to position the connection between the tube and the enclosure near the outer edge of the basin to make it more accessible and easier to maintain.

Claims

Demands

1. Assembly (0) comprising a basin (1) having a peripheral outer edge (la) of the basin (1) and a cover device (2) of the basin (1), the cover device (2) comprising: - a plurality of cables (2a), each given cable (2a) of the plurality of cables (2a) being stretched between first and second parts (2a1, 2a2) of the given cable (2a); and - at least one cover tarpaulin (3) supported by at least some of the cables of the plurality of cables to define a cover surface disposed over the basin (1), the device (2) includes a support (4) disposed in the basin (2) to support said plurality of cables (2a) over the basin (2) and generate at least one slope of said at least one tarpaulin such that water on an upper face of said at least one tarpaulin flows from the support to an area external to the basin by passing over the outer peripheral edge (la) of the basin (1),said cover device (2) comprising at least one agitator (5), said at least one agitator (5) comprising agitating blades (5a) and at least one motor (5b) for moving the blades (5a) in the basin (1) and agitating a fluid substance (M) therein, characterized in that said at least one agitator (5) is carried by said support (4), said support (4) being a tower having a base placed at the bottom of the basin (1) and having a top carrying each of said cables (2a) of said plurality of cables (2a).

2. Assembly (0) according to claim 1, wherein said motorization (5b) is placed above an upper plane (Ps) of basin (1) in which extends an upper face of the peripheral outer edge of the basin (1) and in which said blades (5a) of said at least one agitator (5) extend between a bottom of the basin (1) and said upper plane (Ps) of basin (1).

3. Assembly (0) according to any one of claims 1 to 2, wherein said support (4) comprises a plurality of guides (41), each cable (2a) of the plurality of cables (2a) being laterally supported against at least one guide (41) corresponding to it and belonging to said plurality of guides (41), the guides being arranged to keep the cables (2a) of the plurality of cables separated from each other.

4. Assembly (0) according to claim 3, wherein the cables (2a) of the plurality of cables are distributed between at least first and second groups of cables (G1, G2), the guides (41) of the plurality of guides being arranged on the support (4) so ​​that the cables (2a) belonging to said first group (G1) of cables move away from each other as they go from said support (4) towards the outer peripheral edge (la) of the basin (1).

5. Assembly (0) according to claim 4, wherein the guides (41) of the plurality of guides are arranged on the support (4) so ​​that the cables belonging to said second group (G2) of cables (2a) are parallel to each other.

6. Assembly (0) according to any one of claims 4 or 5, wherein the plurality of cables comprises a third group (G3) of cables (2a) whose cables are distinct from the cables belonging to said first and second groups (G1, G2) of cables (2a), the guides (41) of the plurality of guides being arranged on the support (4) so ​​that the cables (2a) belonging to said third group (G3) of cables move apart from each other as they go from said support to the outer peripheral edge of the basin.

7. Assembly (0) according to any one of claims 3 to 6, wherein the guides (41) are distributed so as to form first and second alignments of guides, the guides of the first alignment (L1) of guides (41) being arranged along a first upper side of said support (4) and the guides of the second alignment of guides (41) being arranged along a second upper side of said support (4).

8. Assembly (0) according to any one of claims 3 to 7, wherein each given guide (41) comprises a sliding piece (41b) disposed around a fixed vertical axis (41x) associated with the given sliding piece (41b), each fixed axis (41x) being fixed relative to said support (4).

9. Assembly according to claim 8, wherein each given sliding piece (41b) has a hollow profile (41bl) in which is received a cable associated with the given sliding piece.

10. Assembly (0) according to any one of claims 1 to 9, wherein each first portion (2a1) of given cable (2a) is fixed to a first corresponding fastener (6) of said given cable (2a) and each second portion (2a2) of said given cable (2a) is fixed to a second corresponding fastener of said given cable (2a), each said attachments (6) being fixedly connected with respect to the peripheral outer edge (la) of the pelvis (1).

11. Assembly (0) according to claim 10, wherein each given attachment (6) comprises a tube (60) for the passage of cable (2a) around the tube and at least one fixing pin (61) fixed in said peripheral outer edge (la) of the basin (1).

12. Assembly (0) according to any one of claims 1 to 11, wherein said at least one cover (3) is methane-tight and is hermetically connected to said outer peripheral edge of the basin (1) so as to form between the basin (1) and said at least one cover (3), a gas containment enclosure (E), at least one gas outlet tube (T) being hermetically connected to said enclosure (E) for collecting gases therein.

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