FR2994533A1 - Docking system for closed enclosure on containment cell of solid radioactive waste transferring installation in nuclear industry, has assembly unit converting rotation of rotary device into displacement of upper and lower bolts - Google Patents

Abstract

The system (4) has an assembly unit converting rotation of a rotary device (63) into displacement of upper bolts (65a) and lower bolts (65b) according to three configurations. The upper bolts are positioned in a locking position and the lower bolts are positioned in unlocking position in the first configuration. The upper bolts and the lower bolts are positioned in the locking position in the second configuration. The upper bolts are positioned in the unlocking position and the lower bolts are positioned in the locking position in the third configuration. An independent claim is also included for a closed enclosure.

Description

The present invention relates to a system for docking a closed enclosure on a containment cell for a double-door sealed transfer installation, making it possible to ensure a tight coupling between the enclosure and the cell and a transfer of material. between the enclosure and the cell by opening a double door. The invention also relates to a closed enclosure shaped to mate with such a docking system, to allow a sealed transfer of material from the containment cell to the closed enclosure, or vice versa.

Many industries are faced with the problem of handling sensitive material in confined spaces, either for the protection of operators or the environment against certain risks posed by these sensitive materials (contamination, radiation, toxicity, pollution, explosion, etc.), either for the purpose of protecting the sensitive material itself against external contamination, for example by working under aseptic or dust-free atmosphere. The invention relates more particularly to the transfer of solid material of the radioactive waste type, between a confinement cell, called a hot cell, provided for the temporary storage of waste at the nuclear site, and a closed chamber, of the drum or container type. storage, shaped for long-term storage of waste on a landfill site or for assembly by pressing with other drums. The invention will subsequently be more particularly described in the context of the transfer of solid radioactive waste from the nuclear industry, inside storage drums, it being specified that the present invention is not limited to this specific field. but may be envisaged: for materials of another nature, such as explosive, toxic, flammable, pollutant, chemical, pharmaceutical, biological, medical, liquid, solid (for example in powdery or particulate form) materials , viscous, etc. ; and / or - with closed enclosures of a shape and function distinct from those of a radioactive waste storage drum, and with confinement cells of form and function distinct from those of a hot cell used in industry nuclear.

The invention thus relates to the field of material transfer between a confinement cell and a closed enclosure, without breaking the seal with respect to the outside of both the cell and the enclosure. Generally, the closed enclosure (or storage tank) is itself disposed inside a closed chamber, sometimes called an outlet vault in the nuclear field, as an additional safety measure if the seal fails during the transfer. This transfer step is particularly complex and delicate because it is essential to ensure the tightness of the transfer of the cell to the enclosure, without leakage outside the enclosure and the cell except this transfer of pregnant cell. In other words, the closed chamber must at no time transfer be in permeable connection with the cell and with the enclosure to avoid, in the nuclear field, the risk of contamination by radioactive dust; the radioactive material only to be in contact with the interior of the cell and the enclosure. In addition, once the enclosure filled with material, it is essential to ensure a sealed closure of the enclosure before uncoupling the enclosure and the cell, to avoid establishing a permeable connection between the inside of the enclosure and the closed room. Indeed, it is necessary to close the enclosure without at any time the material can contaminate, pollute or irradiate in the closed chamber. To answer this problem, it is known to employ two-door sealed transfer installations or devices, in particular documents FR 2 695 343, FR 2 496 325, FR 2 673 990, FR 2 720 372, FR 25 2. 777 822 and FR 2 788 048, commonly referred to as "DPTE" for "Double Waterproof Transfer Door", or "RTP" for "Resin Transfer Port". Typically, these two-door sealed transfer devices comprise: a docking system on the containment cell having a docking flange mounted on a wall of the cell and delimiting an opening in the cell, and a door said cell for sealing this opening; and a closing system of the closed enclosure, comprising a speaker flange mounted on the closed enclosure and delimiting an opening in the enclosure, and a so-called enclosure door for closing this opening.

During the transfer operation, the two flanges are coupled tightly, then the two doors are also coupled tightly while disconnecting the corresponding flanges. It is essential during this step to ensure that the sealed couplings between the two flanges and between the two doors are established before disconnecting the doors from their respective flanges. It is also essential to ensure that the cell door can not be opened if the enclosure is not present and coupled to the docking flange. Then, the two doors, forming the double door, are open, thus ensuring the sealed communication between the cell and the enclosure to be able to achieve material transfer, while mutually protecting their so-called "cold" faces, that is, ie the upper face for the enclosure door and the lower face for the cell door which must remain uncontaminated.

Following the actual transfer, the two doors are closed, then reconnected to their respective flanges in a sealed manner, and finally the two flanges are uncoupled. It is essential during this step to ensure that both doors are reconnected to their respective flanges before uncoupling the flanges.

In a conventional manner, and as described in the aforementioned documents of the prior art, the two flanges are coupled to each other under the effect of a rotation of the enclosure, by means of a system bayonet link. Thus, the enclosure flange has radially projecting lugs which penetrate through notches in an annular groove formed in the docking flange, following a first axial translational movement, and then the tabs become jammed inside. this annular groove, following a second rotational movement of the enclosure which spreads the tabs of the notches. A first disadvantage of this bayonet connection system is based on the need to ensure alignment between the tabs and the corresponding notches before performing the first axial translation movement and the second rotational movement of the enclosure. It is therefore essential to perform an angular indexing of the enclosure before the start of the docking procedure, which can be particularly difficult and complex to achieve when working in a closed chamber, generally not accessible to an operator, and therefore when one works essentially in an automated way and without direct visibility. Such angular indexing is all the more difficult to achieve with speakers having a symmetry of revolution. A second disadvantage of this bayonet link system 5 is the need to provide a dedicated motorized system to rotate the enclosure, thereby increasing complexity and costs. A third disadvantage of this bayonet connection system is the need to provide a sufficiently rigid socket on the enclosure to be rotated, which can be particularly complex and expensive with speakers having a symmetry of revolution and / or made of plastics. It is also customary to provide, directly on the enclosure, a coupling part with the aforementioned motorized system, thus increasing the manufacturing costs of the enclosure and generating local vulnerabilities. It is also known from the aforementioned documents of the prior art to provide for the connection of the two doors to each other and the connection of the enclosure door to the enclosure flange by means of two other bayonet connection systems. , thus totaling three bayonet linkage systems for the classic dual door waterproof transfer device. Such a solution with two other bayonet link systems has many disadvantages. A first disadvantage is to impose relative rotational movements between the two doors and between the enclosure door and the enclosure flange, with risks in terms of sealing by moving relative parts 25 whose interfaces are critical in terms of tightness. A second disadvantage is to require complex security mechanisms, such as that described in document FR 2 695 343 which incorporates four locks. A third disadvantage relates to the risk of losing the angular indexing of the two doors when opening the double door, under the effect of a rotation of the double door, which would complicate or even prevent the closure of the double door. A fourth drawback lies in the fragility of the bayonet locking system. Indeed, because of the low contact surfaces 35 implemented by these bayonet systems, it is necessary to achieve the legs by a matting process (plastic deformation of the material), thereby inducing weakness in the doors and flanges . The present invention aims to solve all or part of these drawbacks by proposing a docking system that allows, once the sealed docking achieved between the two flanges, to ensure sealing during the various stages (connection between the two doors, disconnection between the enclosure door and the enclosure flange, disconnection between the cell door and the cell flange), avoiding relative locking movements between the two doors and between the doors and the corresponding flanges when of these 10 steps. Another object of the present invention is to allow the sealed docking of a chamber without the need for prior angular indexing, and also by providing a chamber shaped to mate with such a docking system. To this end, it proposes a system for docking a closed enclosure on a containment cell for a double door sealed transfer installation, of the type comprising a docking flange delimiting an opening for access to the control cell. confinement, and a said cell door for sealing said opening, remarkable in that the cell door 20 comprises: an outer ring mounted contiguous in the flange in a closed position of the opening; - A rotary device mounted contiguous within said outer ring and movable in rotation; Upper latches for locking the cell door to the docking flange, said upper locks being movably mounted on the rotary device (preferably on an upper face) between a locking position in which said upper locks are in position; radial projection on the outside of the outer ring and cooperate with a circumferential groove 30 formed on an inner peripheral face of the docking flange, and an unlocking position in which said upper locks are retracted on the inside of the outer ring ; lower latches for locking the cell door on a so-called closure chamber door of the closed enclosure, said lower latches being movably mounted on the rotary device (preferably on a lower face) between a position of locking wherein said lower latches are extended outwardly of the rotary device to cooperate with a circumferential groove on the enclosure door, and an unlocking position in which said lower latches are retracted on the inside of the rotary device; an upper mounting system of the upper latches on the rotary device and a lower mounting system of the lower latches on the rotary device, said mounting systems being shaped to convert the rotation of the rotary device into displacements of the latches in the following successive configurations; a first configuration in which the upper latches are in the locking position and the lower latches are in the unlocking position; a second configuration in which the upper and lower latches are in the locked position; and a third configuration in which the upper latches are in the unlocking position and the lower latches are in the locking position. Thus, the locking of the enclosure door does not require angular indexing of the enclosure, because the lower latches are movable radially to cooperate with a circumferential groove provided in the enclosure door. In addition, this docking system makes it possible to interlock (lock the cell door on the docking flange and lock the cell door on the enclosure door) shaped so that the upper and lower locks the lower latches can not be unlocked simultaneously (for obvious reasons of sealing), and locking of the upper latches will unlock the lower latches and vice versa, while respecting the second transient configuration where the upper and lower latches are locked simultaneously.

According to one characteristic, the upper mounting system comprises, for each upper lock: an upper cam path formed on an upper part of the rotary device; an upper follower, in particular of the roller type, mounted on the corresponding upper lock 35 and in contact with the upper cam path.

According to another characteristic, the lower mounting system comprises, for each lower lock: a lower cam path formed on a lower part of the rotary device; - A lower follower, including the roller type, mounted on the corresponding lower latch and in contact with the lower cam path. The use of a radial sliding guide of the lower and / or upper latches by cam / follower systems ensures control according to the exact desired configuration, by adjusting the shape of the cam paths, and also on the relative positioning between the lower cam paths and the upper cam paths. In a particular embodiment, the rotary device comprises a plate having an upper face in which are formed the upper cam paths, and an opposite lower face in which are formed the lower cam paths. Thus, the rotation of the plate ensures the movement of the lower and upper locks between the different configurations, in one direction or the other. Advantageously, the docking system further comprises docking locks shaped to lock a flange of the enclosure on the cell flange, said docking locks being mounted under the docking flange and movable in radial translation between a locking position in which the docking locks project radially inwardly of the docking flange to cooperate with a circumferential groove on the flange of the enclosure, and an unlocking position in which the locks docking are retracted to the outside of the docking flange. In other words, these docking locks form mandrels which engage in a groove provided for this purpose on the outer periphery of the enclosure flange with a deployed position in the direction of the enclosure flange 30 for locking in the housing. groove and a retracted position to the outside of the enclosure flange not to be engaged with this enclosure flange. Thus, no angular indexing is necessary for the docking of the enclosure on the docking flange, because these docking locks can be taken anywhere in the groove of the enclosure flange. In a particular embodiment, the cell door further comprises a lower latch guide member which is secured to a lower face of the outer ring and which supports the lower latches and at least in part the lower mount systems. said guide member including radial through spaces for passage and guidance of the lower latches.

According to a possibility of the invention, the cell door further comprises a locking device in rotation normally blocking the rotation of the rotary device in the absence of a closed enclosure docked on the docking flange, and automatically unlocked by the docking of the closed enclosure on the docking flange.

Thus, in the absence of a speaker, the rotation of the rotary device is locked in the first configuration by the locking device held locked by an elastic means, so that the lower latches are locked in the open position or unlocked in the waiting to engage the enclosure door, and that the upper latches are locked in the closed or locked position to maintain the sealing of the cell door on the docking flange. Then, under the effect of a thrust exerted by the enclosure on the locking device, against the elastic means, this locking device releases the rotation of the rotary device and thus allows the passage to the third configuration .

In a particular embodiment, the rotational locking device comprises: a locking finger slidably mounted in a through bore formed in the outer ring of the cell door and having a lower portion and an opposite upper portion, said finger lock 25 being movable between: - a locking position in which the upper part engages with a notch in the rotary device to block its rotation, and the lower part protrudes from a lower face of the cell door; and an unlocking position in which the upper part is released from said notch to release the rotation of the rotary device, and the lower part is pushed towards the outer ring, in particular under the effect of a thrust exerted by the closed enclosure (3); a return device (or elastic means) tending to move said locking finger towards the locking position.

In the presence of the aforementioned guide element, the locking finger passes through the guide element and, in its unlocking position, its lower part protrudes from a lower face of said guide element.

According to another possibility of the invention, the docking system further comprises a rotary drive system of the rotary device, of the type comprising a hub fixed on an upper face of the outer ring of the cell door, and having a central bore in which is rotatably mounted a rotating shaft rotating said rotary device.

This hub thus ensures the rotational guidance of the rotating shaft while being able to serve as a point of attachment to actuate the opening of the cell door. Due to the presence of this hub, it is advantageous for the hub and / or the outer ring to have radial through spaces 15 for the passage and guiding of the upper locks. In an advantageous embodiment, the docking system further comprises a system for opening / closing by tilting of the cell door, of the type comprising: a fixed frame; A motorized system driving in rotation an output shaft rotatably mounted on said frame; a frame rotatably mounted on said output shaft; at least one guide column in translation of the hub, wherein the or each guide column is mounted in a first bearing fixed on the hub and is guided in translation in a second bearing mounted on the frame; - A connecting rod having a lower end rotatably attached to said shaft and an upper end on which is fixed an axis; a rocker having a pivot central articulation on said frame and, on either side of said central articulation, a rear part in which is formed an oblong hole traversed by said axis, and two front arms whose free ends are pivotally articulated on rods, said rods being also pivotally articulated on the hub; so that the rotation of the output shaft causes: - in a first step and concomitantly, the rotation of the connecting rod 35 which causes the tilting of the rocker around its central articulation, which causes the translation of the hub in translation and the cell door guided by the one or more guide columns, with the frame remaining fixed, until the axis abuts in a bottom of the oblong hole and that the hub abuts against the frame; then - in a second step, the common pivoting of the frame, the hub, the cell door, the connecting rod and the rocker, around the output shaft. Such a rocker system has the advantage of allowing first of all to fire on the cell door, and therefore on the double door when the two doors are locked together, so as to unhook the enclosure door of the flange. enclosure, before achieving full opening of the double door by tilting or pivoting around the output shaft. According to another advantageous characteristic of the invention, the docking system further comprises a device for blocking the rotation of the rotary device in the third configuration, comprising: a locking pin fixed on the frame of the opening system closing and traversing the hub; and an orifice formed on an upper face of the rotary device and positioned in front of said locking finger when the rotary device is in the third configuration, so that said locking finger engages in said orifice after translation in translation of the hub and the cell door. Thus, after rotation of the rotary device to the third configuration and before the hub is raised, the locking finger is located opposite but at a distance from this orifice, and it is only after the rise of the hub that the locking finger enters this hole and blocks the rotation of the rotary device to fix it in the third configuration. The present invention also relates to a closed enclosure for a double door sealed transfer installation, of the type comprising a hollow body, a so-called enclosure flange fixed on an upper and open end of the body, said enclosure flange having a shape generally annular and delimiting an access opening inside the enclosure, and a so-called enclosure door for closing said access opening, said closed enclosure being remarkable in that the enclosure door comprises an annular wall mounted contiguous in said enclosure flange in a closed position and a bottom bordered by said annular wall, and in that said annular wall has on its inner periphery a circumferential groove 35 shaped for the locking of the door enclosure on a cell door of a docking system according to any one of the preceding claims. Preferably, this circumferential groove defines a surface of revolution about a principal axis of symmetry which will coincide with the main axis of the docking system. Thus, this closed enclosure is shaped to mate with a docking system according to the invention, the circumferential groove being provided for locking on the cell door by means of the upper locks, without prior angular indexing. Advantageously, the enclosure door has latching means on the outer periphery of its annular wall, and the enclosure flange has complementary latching means on its inner periphery. Thus, the speaker door is snapped or clipped inside the enclosure flange, allowing for blind mounting, without angular indexing of the enclosure door into the enclosure flange, ie without management of the rotation of the enclosure and / or the enclosure door during the various manipulations. In a particular embodiment, the latching means consist of elastically deformable lugs and the complementary latching means consist of an annular projection on the inside periphery of the enclosure flange. Advantageously, the enclosure flange has on its outer periphery an annular protuberance forming a flange which overhangs a circumferential groove formed on said outer periphery; this circumferential groove preferably defining a surface of revolution, just like the annular protuberance. Such a groove is provided for locking the docking locks described above, below the annular protuberance; the shapes of the protuberance and / or docking locks being adapted for optimum plating of the enclosure against the docking flange. Other features and advantages of the present invention will appear on reading the detailed description below, of an example of non-limiting implementation, with reference to the appended figures in which: FIG. 1 is a view in schematic sectional view of a transfer line and radioactive waste storage in closed containers of the storage drum type according to the invention, said line incorporating a double door sealed transfer installation according to the invention; - Figure 2 is a schematic perspective view from above of a docking system according to the invention, illustrating more specifically the opening / closing system by tilting of the cell door; - Figure 3 is a schematic side view of the docking system of Figure 2; - Figure 4 is a schematic top view of the docking system of Figure 2; FIG. 5 is a schematic partial sectional view of the docking system of FIG. 2, along the sectional plane AA of FIG. 3; FIG. 6 is a schematic partial sectional view of the docking system of FIG. FIG. 2 is a diagrammatic view in radial section of the docking system of FIG. 2, along the sectional plane CC of FIG. 4; FIG. schematic view on an enlarged scale of the zone D of FIG. 7; FIG. 9 is a schematic view on an enlarged scale of the zone E of FIG. 7; FIG. 10 is a diagrammatic view in radial and partial section of the docking system of FIG. 2, along the sectional plane FF of FIG. 7; FIG. 11 is a diagrammatic view in partial section of the docking system of FIG. Figure 2, according to the sectional plane GG of Figure 7; - Figure 12 is a schematic partial sectional view of the docking system of Figure 2, according to the sectional plane H-H of Figure 17 described below, illustrating a locking device in rotation; - Figure 13 is a schematic partial sectional view of the docking system of Figure 2, according to the sectional plane 1-1 of Figure 3; - Figure 14 is a schematic partial sectional view of the docking system of Figure 2, according to the sectional plane J-J of Figure 3; - Figure 15 is a schematic partial sectional view of the docking system of Figure 2, according to the sectional plane K-K of Figure 3; - Figure 16 is a schematic partial sectional view of the docking system of Figure 2, according to the sectional plane L-L of Figure 3; - Figure 17 is a schematic partial sectional view of the docking system of Figure 2, according to the sectional plane M-M of Figure 3; - Figure 18 is a schematic radial sectional view of a closed chamber according to the invention and forming a storage shaft adapted to mate on the docking system of Figure 2; FIG. 19 is a schematic view on an enlarged scale of the zone N of FIG. 18; - Figure 20 is a schematic perspective view and in partial radial section of the barrel of Figure 18; - Figure 21 is a schematic perspective view of the enclosure door - or drum door - forming a closure cover for the shaft of Figure 18; FIG. 22 is a diagrammatic view in radial and partial section of the docking system of FIG. 2 and the shaft of FIG. 18 in a first so-called approach configuration, before contact and docking of the drum on the docking system. ; - Figure 23a is a view identical to that of Figure 12, illustrating the locking device in rotation in the locking position in the first configuration of Figure 22; Fig. 23b is a schematic side view of a portion of the opening / closing system illustrating a rotational locking device of the output shaft in the first configuration of Fig. 22; - Figure 24 is a schematic view identical to that of Figure 22 of the docking system and the shaft in a second so-called docking configuration with the lock - or the connection - between the flange of the drum and the docking flange ; FIG. 25 is a view identical to that of FIGS. 12 and 23a, illustrating the locking device in rotation in the unlocked position in the second configuration of FIG. 24; - Figure 26 is a schematic view identical to that of Figure 22 of the docking system and the shaft in a third so-called tilt configuration with, on the one hand, the locking - or the connection - between the drum door and the cell door and, on the other hand, the unlocking - or disconnecting - between the cell door and the docking flange; - Figure 27 is a schematic view identical to that of Figure 22 of the docking system and the shaft in a fourth so-called lifting configuration of the two doors with the opening / closing system by tilting which raises in translation the two doors connected to each other; - Figure 28 is a schematic view identical to that of Figure 23b illustrating the rotational locking device of the output shaft in the fourth configuration of Figure 27; FIG. 29 is a schematic view identical to that of FIG. 22 of the docking system and of the drum in a fifth so-called opening configuration with the tilting opening / closing system which pivotally tilts the two connected doors between they. In the embodiment illustrated in FIGS. 1 to 29, the double door sealed transfer installation 1 is applied to the transfer of solid radioactive waste material (not illustrated) between a containment cell 2 of the hot cell type used for Temporary storage of radioactive waste, and a closed chamber 3 of the storage drum type used for the storage of radioactive waste for long-term burial on a dedicated landfill site. It will be understood, however, that the present apparatus 1 may find application with containment cells, closed enclosures and transferable materials of another kind or form. With reference to FIG. 1, the installation 1 is integrated within a line L for transferring and storing radioactive waste between a hot cell 2 and waste storage containers 3, and comprises a docking system 25. 4 according to the invention and described with precision later. Cell 2 is delimited by containment walls designed to prevent contamination and transmission of radiation from the waste to the outside. Automated waste bin handling systems 21 are disposed within cell 2 for transporting waste between a temporary storage area (not shown to the left of cell 2 in Fig. 1) and a transfer zone (to the right of the cell 2 in FIG. 1) in which a so-called cell opening is provided in a wall 20 of the cell 2 for the transfer of the waste. These automated handling systems 21 includes means for turning barrels 22 upside down during the transfer operation to barrels 3.

The installation 1 is provided in the aforementioned transfer zone, and more precisely on the cell opening, according to a mounting described later. Below this cell opening is provided a so-called transfer space E, isolated from the cell 2, and in which the barrel 3 is disposed before and during docking on the docking system 4 of the installation 1. The Line L integrates a carriage C for transporting the drums 3, ensuring a displacement in horizontal translation of the drums 3, as well as an up / down system (not shown) designed to raise and lower each drum 3 vertically once the latter is positioned by the carriage vis-à-vis the docking system 4 of the installation 1. The line L also incorporates an output cell C, sometimes called outlet chapel, delimited by PR walls and separated from the space transfer E by a movable door P between an open position (as illustrated in FIG. 1) in which the output cell C and the transfer space E are in communication, and a closed position in which the door P separates waterproof cel the outlet space C of the transfer space E. Inside the outlet cell C is also provided a sealing installation F of a cover (not shown) on the shaft 3, this cover sealingly closing and perennial barrel 3, in addition to the barrel door described later, for a subsequent burial of the barrel 3. The present invention is not intended for this waterproof fastening installation F, its description will not be described in more detail. The carriage C is also movable in translation between a so-called transfer position (visible in FIG. 1) with the shank 3 placed under the docking system 4 of the installation 1, a position for sealing a cover with the shank 3 placed under the installation F, and an output position with the shank 3 placed under an exit door PS out of the output cell C, said exit door PS closing an opening in a wall PR of the cell outlet C. The evacuation of the drum 3 filled with waste and sealed is conventionally effected by means of a sealed cupola (not shown) which is positioned above the PS exit door and which is provided with a transfer airlock to guarantee the confinement and protection against radiation during the entire output of the drum 3.

The remainder of the description relates more specifically to the double-door waterproof transfer installation 1 which comprises: a docking system 4 on the cell 2, having a docking flange 5 mounted on a wall 20 of the cell 2 and delimiting the cell opening, and a so-called cell door 6 for sealing this opening; and a closure system 7 of the barrel 3, comprising an enclosure flange 8, 5 hereinafter called a barrel flange, mounted on the barrel 3 and delimiting an opening in the barrel 3, and an enclosure door 9, later called barrel door, for the closure of this opening. For the following, "face or upper part" will be understood to mean a face or a part of a part which is oriented towards or located on the side of the cell 2, in opposition to a "face or lower part" to define a face or part of a piece which is oriented towards or located on the side of the shaft 3. It will also be understood by central axis Z the axis of symmetry of the different pieces of revolution, corresponding for the following description to a vertical axis . The docking system 4 comprises a mounting ring 40 having: - an external peripheral bearing in which are provided orifices 41 regularly distributed for the passage of screws 42 for fixing the mounting ring 40 to the edge 23 of the wall 20 of the cell 2 delimiting a cylindrical hole; and an internal peripheral bearing in which regularly spaced orifices are provided for the passage of fastening screws 43 of the docking flange 5 on the mounting ring 40. Thus, this mounting ring 40 ensures the attachment of the flange 25. 5 on the wall 20 of the cell 2, with the interposition of seals between the mounting ring 40 and the wall 20 and between the mounting ring 40 and the docking flange 5. The docking flange 5 has a generally annular shape and delimits at its center a through opening for access to the cell 2, said opening being substantially frustoconical, in the direction of a diameter reduction from top to bottom (ie on the side of the cell 2 in the direction of the drum 3), and is delimited by an inner peripheral face 50. The docking flange 5 has a circumferential groove 52 formed on the inner peripheral face 50 and defining a surface of 3 5 revolution about the central axis Z, said groove 52 having an upper ramp with an upper height input relative to the height in the bottom of the groove 52. The docking flange 5 has a so-called suction groove 53 on its upper face, of generally cylindrical shape, and covered by a so-called suction crown 54 fixed on this upper face and having at least one through hole 55 opening into said suction groove 53. Suction orifices 56 are formed in the docking flange 5 between the inner peripheral face 50 and the suction groove 53. These suction means 53, 54, 55, 56 have the function of being able to suck from the cell 2 10 which would be installed on the inner peripheral face 50 during the transfer. However, it is conceivable to dispense with these suction means 53, 54, 55, 56. The docking system 4 also includes so-called docking locks 14 for locking the drum flange 8 on the docking flange 5 These docking latches 14 are in the form of mandrels or jaws which engage in a circumferential groove 80 provided on the outer periphery of the barrel flange 8, below an annular protrusion 81 forming the flange. upper of this barrel flange 8; with in the illustrated example four docking locks 14 regularly distributed at 90 ° 20 from each other. These docking locks 14 each have a distal end substantially hook-shaped or ramp to allow the plating of the barrel flange 8 against the docking flange 5, and more particularly the clamping of the annular protrusion 81 against the face lower of this docking flange 5. These docking bolts 14 are mounted under the docking flange and are movable in radial translation on the mounting ring 40 between: a locking position (visible in FIGS. 26, 27 and 29) in which the docking locks 14 project radially inwardly of the docking flange 5 and the mounting ring 40 and engage with the groove 80; and - an unlocking position (visible in FIGS. 4 and 22) in which the docking locks 14 are retracted under the mounting ring 40, ie the docking locks 14 are further from the central axis Z in this unlocking position relative to the locking position. These docking locks 14 are mounted on the underside of the mounting ring 40 by means of two guide pieces 146 fixed by screwing on this lower face, as can be seen in FIGS. 11 and 17, these two guide pieces 146. supporting and guiding in radial sliding said docking locks 14. These docking locks 14 are displaced in radial translation by means of a displacement device which comprises: - a lower ring gear 140 fixed on the underside of the landing gear ring; mounting 40 by screwing, and having an inner bearing; - A sliding ring 141, in particular made of bronze, mounted in the inner bearing of the lower ring 140; An annular cam 142 rotatably mounted in the lower ring gear 140, with a rotation guide provided by means of the sliding ring gear 141 interposed between the annular flange 142 and the inner bearing of the lower ring gear 140, said cam 142 having on its upper face of the notches 143 arcuate and not through, said notches 143 forming cam tracks; roller-type followers 144 pivotally mounted on the proximal ends of the corresponding docking locks 14, opposite their respective distal ends, said rollers 144 being engaged and guided inside the notches 143 concerned; 20 - flanges 145 for holding the sliding ring gear 141 and the cam 142 on the lower ring gear 140. This displacement device further comprises a rotational drive system 15 of the cam 142 to control the rotation of the latter and thus control the movement of the docking locks 14. With reference to FIGS. 3 and 17, this rotary drive system 15 comprises: a rotary motor 150 fixed on the lower face of the outer ring 40 by means of a support 151; a toothed pinion 152 driven in rotation by the rotary motor 150; A toothed wheel sector 153 fixed on a lower face of the cam 142 and meshing with the toothed pinion 152. The cell door 6 comprises an outer ring 60 mounted contiguous in the docking flange 5 when the cell door 6 occupies a closed position of the through opening delimited by the docking flange 5. More precisely, in this closed position, the outer ring 60 has an outer peripheral face which is mounted contiguous against the inner peripheral face 50 delimiting this opening; the frustoconical shape in the lower part of this opening ensuring correct positioning of the outer ring 60 of the cell door 6 inside the docking flange 5.

The cell door 6 includes an annular seal 61 held on the underside of the outer ring 60 by means of an annular support 62 screwed onto this lower face; this seal 61 being pressed against the inner peripheral face 50 of the docking flange 5 in the closed position and coming into alignment with the underside of the docking flange 5. The cell door 6 comprises a rotary device 63 mounted joined within the outer ring 60, and more precisely within a cylindrical bore delimited by the outer ring 60. This rotary device consists of a plate 63 rotatably mounted within this bore. The cell door 6 also comprises one or more seals inserted between the rotary plate 63 and the outer ring 60, this or these seals being supported by an annular seal holder 69 mounted on the inner face of the plate 63. This plate 63 presents: - an upper face in which are formed notches upper 64a arcuate and not traversing, evenly distributed, with in the illustrated example three upper notches 64 distributed at 120 °; and - a lower face in which are provided with notched and non-traversing lower notches 64b, evenly distributed, with in the example illustrated three lower notches 65 distributed at 120 °. These upper notches 64a and lower 64b form respectively said upper and lower cam paths whose functions will be described below. The cell door 6 further includes upper latches 65a 30 for locking the cell door 6 to the docking flange 5 by engaging these upper latches within the circumferential groove 52 in the flange of the housing. berthing 5; with in the example illustrated in the figures, three upper locks 65a distributed at 120 °. These upper latches 65a pass through the outer ring 60 and are guided radially sliding in radial grooves on the upper face of the outer ring 60.

These upper latches 65a are movably mounted in radial translation on the rotary plate 63 between: a locking position (visible in FIGS. 7, 9, 22 and 24) in which the upper latches 65a are radially projecting on the outside of the outer ring 60 and each have a beveled distal end which cooperates with said groove 52; and an unlocking position (visible in FIGS. 26, 27 and 29) in which the upper locks 65a are retracted on the inside of the outer ring 60, in other words inside the aforementioned radial guide grooves 10, such upper latches 65a do not protrude radially out of the outer ring 60. These upper latches 65a are mounted on the rotary table 63 by means of an upper mounting system which comprises, for each upper latch 65a: - a notch upper 64a as defined above and forming an upper cam path; and a roller-type upper follower 66a pivotally mounted on a proximal end of the corresponding upper latch 65a, opposite its distal end, said upper roller 66a being engaged and guided within the respective upper notch 64a. The cell door 6 further includes lower latches 65b for locking the cell door 6 to the barrel door 9 by engaging these lower latches 65b within a circumferential groove 90 formed on the barrel door. 9 described later; with 25 in the example illustrated in the figures, three lower locks 65b distributed at 120 °. These lower latches 65b extend below the outer ring 60 and are supported by a guide member 67 which is attached to the underside of the outer ring 60. This guide member 67 is in the form of a cylindrical platform defining a central housing 68a open at the top, facing the turntable 63; this central housing 68a being delimited by an annular peripheral wall 68b and a lower bottom 68c. The peripheral wall 68b has a circular lug engaged in a cylindrical groove in the underside of the outer ring 60 for centering the guide element 67.

The lower latches 65b are guided radially sliding in radial grooves formed in the peripheral wall 68b of the guide element 67. These lower latches 65b are mounted movable in radial translation on the rotary plate 63 between: a locking position (Visible in Figures 26, 27 and 29) wherein the lower latches 65b are radially projecting on the outside of the guide member 67 and each have a beveled distal end which cooperates with said groove 90; and an unlocking position (visible in FIGS. 7, 9, 22 and 24) in which the lower latches 65b are substantially retracted on the inside of the guide member 67, that is, essentially extend to the internal radial grooves formed in the peripheral wall 68b, so that these lower latches 65b do not protrude or almost no radially out of the guide member 67. These lower latches 65b are mounted on the rotary plate 63 by means of a lower mounting system which includes, for each lower latch 65b: a lower slot 64b as defined above and forming a lower cam path; and a lower follower of the roller type 66b pivotally mounted on a proximal end of the corresponding lower lock 65b, opposite its distal end, said lower roller 66b being engaged and guided inside the lower notch 64a concerned. The lower rollers 66b and the lower locks 65b extend partially within this central housing 68a of the guide element 67. The upper notches 64a and lower 64b are positioned relative to each other and shaped to converting the rotation of the rotary plate 63 into displacements of the latches according to the following successive configurations: a first configuration (visible in FIGS. 7, 22 and 24) in which the upper latches 65a are in the locking position and the lower latches 65b are in the unlocking position; - A second configuration (not shown), after docking and locking the barrel 3 on the docking flange 5, wherein the upper latches 65a and lower 65b are in the locking position; and a third configuration (visible in FIGS. 26, 27 and 29) in which the upper latches 65a are in the unlocking position and the lower latches 65b are in the locking position. For this purpose, and as visible in FIGS. 15 to 17, the notches 64a, 64b are of substantially the same length and each have, between a proximal end located at a first distance from the central axis Z and a distal end located at a second distance from the central axis Z, with the second distance greater than the first distance: a first portion extending from the proximal end and extending substantially rectilinearly in the direction of a distance from the axis central Z from the proximal end; An elbow extending the first portion; and - a second portion extending the bend to the distal end, this second portion being shorter than the first portion and extending substantially constant along its entire length at the same second distance from the central axis. In the first configuration, the upper rollers 66a for guiding the upper locks 65a are in the second portions of the upper notches 64a at the distal ends, while the lower rollers 66b for guiding the lower locks 65b are in the first portions of the notches. lower 64b at the proximal ends. Next, the first to the second configuration is made by rotating the plate 63 (clockwise in FIG. 15 and counterclockwise in FIG. 16), so that the upper rollers 66a move towards the proximal ends. upper notches 64a for retracting the upper latches 65a, and the lower rollers 66b move toward the distal ends of the lower notches 64b for deployment of the lower latches 65b. Since the second portions of the notches 64a, 64b are shorter than the first portions, the upper rollers 66a pass the elbows of the upper notches 64a before the lower rollers 66b reach the elbows of the lower slots 64b. Thus, the second configuration corresponds to an intermediate configuration where the upper latches 65a are still engaged with the groove 52 and the lower latches begin to engage with the groove 90. Thus, at any point in the sequence, we are in a configuration where none of the latches 65a, 65b are engaged. In other words, the locks 65a, 65b are controlled mechanically by the plate 63, and its notches 64a, 64b, which ensure interlocking so that the locks 65a, 65b can not be unlocked simultaneously, and the locking upper latches 65a causes the unlocking of the lower latches 65b and vice versa, while respecting a transient configuration where the latches 65a, 65b are locked simultaneously. The second to third configuration is then continued by continuing the rotation of the plate 63 (clockwise in FIG. 15 and counterclockwise in FIG. 16), so that the upper rollers 66a substantially reach the proximal ends. upper notches 64a and lower rollers 66b substantially reach the distal ends of lower notches 64b. The cell door 6 further comprises a rotational locking device 16 shaped to: - on the one hand, normally block the rotation of the rotary plate 63 in the absence of the barrel 3 approached on the docking flange 5, when the cell door 6 is locked on the docking flange 5 by means of the upper locks 65a; and - on the other hand, to automatically unlock the rotation of the plate 63 by the docking of the barrel 3 on the docking flange 5 before locking the barrel door 9 to the cell door 6. in FIGS. 12, 23a and 25, this rotational locking device 16 comprises a locking pin 160 slidably mounted in a through bore formed in the outer ring 60 of the cell door 6, with the interposition of an annular seal of FIG. seal. This locking pin 160 has a lower portion on which is fixed a stop 162 and an opposite top portion formed as an enlarged cylindrical head 163. The locking pin 160 also passes through the guide element 67, through a bore 68d formed in the peripheral wall 68b opposite the through bore formed in the outer ring 60. In addition, the head 163 is engaged with a notch 600 in an arc formed in the inner edge of the outer ring 60, and the head 163 is free to slide in this slot 600. The locking device 16 also comprises a return device 164 made in the form of a a compression spring interposed between a bearing surface provided in the aforementioned through bore and the stopper 162. The locking pin 160 is movable between: a resting or locking position (visible in FIGS. 12, 16 and 23a); ), in which the head 163 is engaged with a notch 630 in a circular arc formed in the peripheral edge of the plate 63 while being engaged with the notch 600 to block its rotation, and in which the stop 162 projects from the underside of the guide member 67, the spring 164 tending to move the locking finger 160 to this locking position; and an unlocking position (visible in FIG. 25) in which the head 163 is pushed upwards and is thus released from this notch 630 in order to release the rotation of the rotary plate 63 under the effect of a thrust exerted by the enclosure door 9 on the stop 162 which slides up the locking finger 160. In the locking position, the head 163 is housed both in the notch 630 of the turntable 63 and in the notch 600 of the outer ring 60, so that the rotation of the plate 63 in the outer ring 60 is blocked. The docking system 4 also comprises a rotating drive system of the rotary plate 63, to control the rotation of the latter and thus control the movement of the locks 65a, 65b. This rotational drive system is integrated within an opening / closing system 17 by tilting the cell door 6, and more particularly opening / closing the double door consisting of the cell door 6 and of the barrel door 8 locked between them. With reference to FIGS. 2 to 7, this opening / closing system 17 comprises a fixed frame 170 made in the form of a stirrup having two parallel flanges and spaced apart from one another and a sole fixed on the face. The opening / closing system 17 also includes a motorized system comprising a rotary motor (not shown) rotating an output shaft 171 through a universal joint 172 and a key 173. The output shaft 171 is rotatably mounted on the flanges of the stirrup 170 via rings 174. The opening / closing system 17 also comprises a frame 175 rotatably mounted on the output shaft 172 wherein the frame 175 comprises: - two parallel arms 176 having proximal ends rotatably mounted about the output shaft 171 via the rings 174, and opposite distal ends; a distal cross-member 177 extending between the two arms 176 at their respective distal ends, and having a central bore in which is mounted a ring forming a sliding guide bearing 180 for a first guide column 196 described herein. -after; two yokes 178 integral with the two respective arms 176, said yokes 178 being offset with respect to the central axis Z in the closed position; a proximal crosspiece 179 extending between the two arms 176, below the yokes 178 and having a central bore in which is mounted a ring forming a sliding guide bearing 181 for a second guide column 197 described hereinbelow; after. The opening / closing system 17 comprises a hub 182 having an annular base 183 surmounted by a cylindrical sleeve 184 having a central bore. The base 183 of the hub 182 is fixed by screwing on the upper face of the outer ring 60 of the cell door 6, with the interposition of at least one annular sealing gasket. The opening / closing system 17 comprises a rotating shaft 185 rotatably mounted within the central bore formed in the sleeve 184 of the hub 182, with the interposition of a guide ring 186. This rotating shaft 185 is integral in rotation with the rotary plate 63, along the central axis Z, and more specifically this shaft 185 is fixed by screwing at its lower end on the plate 63. The opening / closing system 17 also comprises a Motorized device for rotating the rotary shaft 185, which comprises: - a pinion gear 187 fixed to the upper end of the rotary shaft 185; a worm 188 meshing with the pinion 187; a drive shaft 189 rotated by a rotary motor (not shown), where the worm 188 is rotatably connected to the drive shaft 189; - An annular casing 190 fixed by screwing on the sleeve 184, said casing 190 extending said sleeve 184 to define a receiving housing of the pinion 187 and the worm 188, and said casing 190 having two screw holes to -is in which are mounted rings 191 forming bearings for the drive shaft 189; a stop 192 integral in rotation with the shaft 185 and designed to limit the rotation of the shaft 185, and therefore of the plate 63, between two extreme positions; a cover 193 fixed on the upper end of the casing 190 for sealing.

As can be seen in FIG. 13, the stop 192 has a first projection abutting against a first abutment surface provided inside the casing 190 during the rotation of the shaft 185 in a first direction of rotation, and a second protruding abutting against a second abutment surface provided inside the housing 190 the housing 190 during the rotation of the rotating shaft 185 in a second direction of rotation. In this way, the rotation of the rotary plate 63 is limited between two extreme positions substantially corresponding to the first configuration and the third configuration described above. As shown in Figure 13, the drive shaft 189 protrudes from the housing 190 via openings, with plugs 194 traversed by the drive shaft 189 and fixed to the housing 190 to seal these openings. One end of the drive shaft 189 is rotatably connected to an extension 195 which will transmit the rotational movement of the rotary motor (not shown) via in particular a universal joint (not shown).

Advantageously, a single motor will be used to drive the drive shaft 189, and therefore the plate 63, and to drive the output shaft 171 in rotation to open / close the system. opening / closing 17. Mechanical transmission systems between the single engine and the shafts 189 and 171 will decoupling.

The opening / closing system 17 comprises two guide columns 196, 197 in translation of the hub 182, and therefore doors 6, 9 once they are locked one on the other. A first guide column 196 is mounted at the bottom in a bearing 198 fixed on the upper face of the base 183 of the hub 182, 35 and is guided in translation in the bearing 180 provided on the distal crossbar 177 of the frame 175.

A second guide column 197 is mounted at the bottom in a bearing 199 fixed on the upper face of the base 183 of the hub 182, and is guided in translation in the bearing 181 provided on the proximal crosspiece 179 of the frame 175, between the two screeds 178.

The opening / closing system 17 comprises a so-called main link 200 having a sleeve-shaped lower end 201 integral in rotation with the shaft 171 and a U-shaped upper end 202 on which is fixed a axis 203. The main link 200 is mounted around a central portion of the shaft 171, and spacers 208 are interposed between the sleeve 201 and the arms 176. The opening / closing system 17 also comprises a rocker 204 in "Y" having a central articulation 205 to pivot on the frame 175 and, on either side of this central articulation 205, a rear arm 206 provided with a free end in which is formed an oblong hole 208 traversed by the axis 203, and two front arms 206 substantially parallel and spaced from each other; these front arms 207 flanking the housing 190. The central hinge 205 is made by means of two pivot connections of the front arms 207 on the yokes 178 respectively. The opening / closing system 17 comprises two rods 209 having upper ends hinged to pivot on the free ends of the front arms 207 of the rocker 204, and the lower ends pivotally articulated on the hub 182, via pins 210 fixed from opposite way on the sleeve 184 of the hub 182, as visible in Figure 10. The opening / closing system 17 also comprises a locking device 220 of the rotation of the output shaft 171, whose function is to block in rotating the shaft 171 with the main link 200 up to a certain engine torque of the shaft 171, to prevent the double door 6, 9 from falling suddenly when it is closed by the opening / closing system 17, and therefore to keep the axis 203 in abutment in the oblong hole 208 until the end of the closing rotation of the double door 6,9, just at the beginning of the vertical translation of the double door 6, 9 which ensures the clipping from the port 9. Referring to Figures 6, 23b and 28, this locking device 220 comprises: - several washers 221 Belleville type mounted around a threaded end of the output shaft 171 which protrudes from a flange frame 170 - a double nut 222 screwed onto the threaded end of the output shaft 171; an indexing piece 223 integral in rotation with the output shaft 171 by means of a key 224 and having, on the one hand, a rear face on which the washers 221 are pressed (these washers 221 being wedged between the indexing piece 223 and the double nut 222 which ensures the setting of the washers 221) and, on the other hand, an opposite front face from which protrudes a protrusion 225 in the form of a point; a cover 226 which envelops the washers 221 and the threaded end of the output shaft 171, this cover 226 being fixed on the rear face of the indexing member 223 - a push support 227 rotatably mounted in a planned bearing in the aforementioned flange of the frame 170 and rotatably mounted around the output shaft 171, this push support 227 having, on the one hand, a rear face facing the front face of the indexing piece 223 where the rear face has a notch 228 of complementary shape to said protrusion 225 and, secondly, a front portion rotatably connected to an arm 176 of the frame 175 by means of a key 229. In operation, the locking device 220 occupies the two following positions: a rest position (visible in FIG. 23b) in which the protrusion 225 is not engaged in the notch 228, as long as the axis 203 does not abut the bottom of the oblong hole 208; a blocking position (visible in FIG. 28), in which the protrusion 225 is engaged in the notch 228 so that the push support 227 is rotationally fixed to the indexing piece 223 and thus the arm 176 of the frame 175 is integral in rotation with the shaft 171 (and thus the frame 175 is not likely to fall), this engagement being caused by the thrust exerted by the washers 221. The opening / closing system 17 operates according to the sequencing next by rotating the output shaft 171, starting from a closed position visible in Figure 26 to an open position visible in Figure 29, and passing through an intermediate position visible in Figure 27. Starting from the closed position visible in FIG. 26, initially and in a concomitant manner, the rotation of the output shaft 171 rotates the main rod 200, which causes the axis 203 to slide in the oblong hole 20 8 of the rocker 204, which causes the rocker 204 to tilt around its central articulation 205, which causes the hub 182 to rise in translation thanks to the rods 209 articulated on both the hub 182 and the rocker 204. This rise of the hub 182 is guided by the guide columns 196, 197 and also causes the rise of the cell door 6, and more specifically of the double door 6, 9 when the two doors 6, 9 are locked together. Thus, the intermediate position of FIG. 27 is reached with the double door 6, 9 raised, and thus with the barrel door 9 open and out of the barrel flange 8.

This rise of the hub 182 lasts until the axis 203 comes to a stop in the bottom of the oblong hole 208 (as seen in FIG. 27) and that, concomitantly, the hub 182 comes into abutment against the frame 175 More specifically, the upper face of the base 183 abuts against the arms 176 of the frame 175. During this rise, the frame 175 remains fixed. In the starting position, it is noted that the locking device 220 occupies the rest position visible in FIG. 23b, so that the frame 175 is not linked in rotation with the output shaft 171. This rest position is retained until the axis 203 abuts in the bottom of the oblong hole 208. Indeed, between the position of Figure 26 and the position of Figure 27, the output shaft 171 has turned d ' a given angle, rotating the indexing member 223 until its protrusion 225 comes in front of the notch 228 formed on the pusher support 227, the washers 221 then pushing the indexing piece 223 so that the protrusion 225 engages in the notch 228 as visible in Figure 28. From there, the output shaft 171 is integral in rotation with the frame 175, thus preventing the frame 175 and therefore the double door 6, 9 of fall. Starting from the intermediate position visible in FIG. 27, in a second step and in a concomitant manner, the further rotation of the output shaft 171 rotates the main link 200, causing pivoting about the shaft 171. of the rocker 204 and thus the frame 175, the hub 182 and the double door 6, 9. At the end of this pivoting, and as shown in Figure 29, the double door 6, 9 is tilted and thus open, putting thus in communication the cell 2 and the inside of the barrel 3.

The opening / closing system 17 further comprises a device for blocking the rotation of the rotary plate 63 when the latter is in the third configuration described above and also when the hub 182 and the double door 6, 9 have been raised. . This locking device comprises a locking pin 211 fixed to the frame 175, and more specifically to a beam 212 extending between the two arms 176. This locking pin passes through the base 183 of the hub 182 sealingly. This locking device also comprises a blind hole 213 formed on the upper face of the rotary plate 63 and positioned facing the locking finger when the plate 63 is in the third configuration 10 (as shown in FIG. 26), so that this blocking finger 211 engages in this blind hole 213 after the hub 182 and the double door 6, 9 have been mounted in translation (as can be seen in FIG. 27). Thus, the opening by tilting of the double door 6, 9 is not likely to rotate the plate 63 so that, after closing the double door 6, 9, the plate 63 has remained in its third configuration. The remainder of the description relates to the barrel 3 which incorporates a closure system 7 of the barrel 3. With reference to FIG. 18, the barrel 3 comprises a hollow body delimited by a cylindrical upper wall 31 extended by a lower wall 32 of generally frustoconical shape, and a bottom 33 having a concavity directed towards the inside of the barrel 3. The body 30 can be made by stamping a steel sheet. This barrel 3 comprises the barrel flange 8 attached to an upper and open end of the body 30, and more specifically mounted on the upper end of the upper wall 31. This barrel flange 8 can be made by machining a blank forging or foundry, then assembled on the body 30 by welding. This barrel flange 8 has a generally annular shape and delimits an opening in the barrel 3. The barrel flange 8 has on its outer periphery 30 an annular protuberance 81, forming a substantially circular radial section flange, forming the upper flange of this barrel flange 8 and, below this annular protuberance 81, there is provided a circumferential groove 80 on the outer periphery of the barrel flange 8, defining a surface of revolution about the central axis Z. The barrel flange 8 has a frustoconical wall 82 below the groove 80 and which is fixed in its widest part on the body 30. One or more breathable pellets 83 of sintered metal pass tightly, in particular by screwing, this frustoconical wall 82. The barrel flange 8 has, on its substantially frustoconical inner periphery and delimiting the access opening to the barrel 3, an annular projection 84 and, above this protrusion annular 84, an annular seal 85 for sealing between the barrel flange 8 and the barrel holder 9 and between the barrel flange 8 and the docking flange, in conjunction with the seal 61 described above. . This barrel 3 also includes the barrel door 9 for closing the access opening to the barrel 3. This barrel door 9 comprises an annular wall 91 with an outer and upper peripheral face of substantially frustoconical shape and complementary to the periphery. inside the barrel flange 8, thus allowing a precise centering of the barrel door 9 when it is joined to the inside of the barrel flange 8. With reference to FIG. 19, the barrel door 9 is set back downwards with respect to the annular protuberance 81, so that a cylindrical space 84 surrounded by this annular protuberance 81 is provided so that a lid (not shown) can be arranged both on the barrel holder 9 and on the flange of barrel 8. Note also that a notch 57 (visible in particular in Figures 8 and 9) is provided on the docking flange 5 to receive the annular protuberance 81 when docking the barrel 3. The barrel door 9 presents, on the per external series of its annular wall 91, 92 elastically deformable tabs and hook-shaped for attachment by clipping or snapping of the barrel holder 9 on the barrel flange 8, by cooperation with the annular projection 84. The vertical depression downwardly, the barrel door 9 inside the annular flange 9 causes the flaps 92 to fold in contact with the annular projection 84, and then relax once past the annular projection 84 for a clipping force. This barrel door 9 may be made of plastic or of polymer material such as polyethylene, in particular by an injection or machining process.

The annular projection 84 has on its underside a ramp to allow unclipping and removing the barrel door 9 by lifting the latter vertically, beyond a lifting threshold force exerted on the barrel door 9, in particular during the opening. opening operation of the double door 6, 9 implemented by the opening / closing system 17 and whose operation has been described above.

The barrel door 9 also has a cylindrical bottom 93 which is bordered by the annular wall 91 projecting upwards from the bottom 93. The annular wall 91 has on its inner periphery an annular return 94 defining a surface of revolution around the central axis Z and which delimits, with the bottom 93, the circumferential groove 90 for locking the barrel door 9 on the cell door 6, as described above. This groove 90 also defines a surface of revolution about the central axis Z and is open on the inside or on the center of the barrel door 9, while the groove 80 is open on the outside of the barrel flange. 8.

The remainder of the description relates to the overall operation of the double-door waterproof transfer installation 1. In a first step visible in FIG. 22, the barrel 3 is in approach and the plate 63 is in the first configuration with the upper latches 65a in the locking position and the lower latches 65b in the unlocking position, so that the door cell 6 is locked on the docking flange 5. The locking pin 160 of the locking device 16 is then in the locking position as shown in Figure 23a. In addition, the opening / closing system 17 is in the closed position and the docking locks 14 are in the unlocked position.

In a second step visible in FIG. 24, the drum 3 is connected and locked on the docking flange 5, following a rise of the drum 3 (without the need to provide an angular indexing) until the drum door 9 bears against the outer ring 60 of the cell door 6 and that the barrel flange 8 abuts against the docking flange 5, with the seals 61 and 85 in opposition to ensure sealing. Thus, the groove 80 of the barrel flange 9 comes opposite the docking latches 14 which are then moved into the locking position. In addition, the opening / closing system 17 remains in the closed position, the upper latches 65a remain in the locking position and the lower latches 65b remain in the unlocking position. Finally, under the effect of the thrust exerted by the bottom 93 of the barrel door 9 on the locking pin 160, the locking pin 160 then moves into the unlocking position and releases the rotation of the turntable 63, as visible on FIG. 25. In a third step visible in FIG. 26, the plate 63 is rotated by rotating the drive shaft 189 so that the first configuration is third configuration in which the upper latches 65a are in the unlocking position and the lower latches 65b are in the locking position. As described above, this passage is performed via a second intermediate configuration which ensures that at no time the latches 65a and 65b are unlocked at the same time. Thus, at the end of this third step, the two doors 6, 9 are locked one on the other thanks to the lower locks 65b, while the cell door 6 is disconnected from the docking flange 5. In a fourth step visible in Figure 27, the output shaft 171 is rotated to cause the rise of the hub 182, and thus lift the double door 6, 9, leading to the unclipping of the barrel door 9 which is extracted from the barrel flange 8 thanks to a vertical translational force. This rise of the double door 6, 9 is accompanied by a blocking of the rotation of the plate 63 by the locking pin 211. In a fifth step visible in FIG. 29, the output shaft 171 drives its rotation to causing the tilting and thus the opening of the double door 6, 9 to put sealed communication cell 2 with the inside of the barrel 3, and thus proceed to the transfer of material. Once the transfer is completed, the steps are reversed in the opposite direction, by rotating the output shaft 171 to fold down and then lower the double door 6, 9, thus reclipsing the drum door 9 on the barrel flange. 8, then rotating the drive shaft 189 and thus the plate 63 in the opposite direction to go from the third configuration to the first configuration, then unlocking the docking locks 141, and finally down the barrel 3.

Of course the implementation example mentioned above is not limiting in nature and further improvements and details can be made to the docking system and to the enclosure / barrel according to the invention, without departing of the scope of the invention where other forms of control of moving parts can for example be made.

It is thus possible to envisage actuators from outside the cell, or to provide for controlling all of the operations (movement of the locks and movement of the opening / closing system) by means of remote controls, such as motorizations. disengageable associated with cranks) and / or using one or more telemanipulator arms.

Claims (17)

REVENDICATIONS1. Docking system (4) of a closed enclosure (3) on a containment cell (2) for a double door sealed transfer installation (1), of the type comprising a docking flange (5) defining an opening for access to the confinement cell (2), and a so-called cell door (6) for sealing said opening, characterized in that the cell door (6) comprises: - an outer ring (60) contiguous climb in the flange in a closed position of the opening; - A rotary device (63) mounted contiguous within said outer ring (60) and rotatable; - upper latches (65a) for locking the cell door (6) on the docking flange (5), said upper latches (65a) being movably mounted on the rotary device (63) between a locking position in which said upper latches (65a) are radially projecting on the outside of the outer ring gear (60) and cooperate with a circumferential groove (52) formed on an inner peripheral face (50) of the docking flange (5), and an unlocking position in which said upper latches (65a) are retracted on the inside of the outer ring (60), - lower latches (65b) for locking the cell door (6) on a so-called door. enclosure (9) closing the closed enclosure (3), said lower latches (65b) being movably mounted on the rotary device (63) between a locking position in which said lower latches (65b) are deployed to the outside the device rotary member (63) for cooperating with a circumferential groove (90) on the enclosure door (9), and an unlocking position in which said lower latches (65b) are retracted on the inside of the rotary device (63); - an upper mounting system (64a, 66a) of the upper latches (65a) on the rotary device (63) and a lower mounting system (64b, 66b) of the lower latches (65b) on the rotary device (63), said mounting systems being shaped to convert the rotation of the rotary device (63) into lock movements (65a, 65b) according to the following successive configurations: - a first configuration in which the upper latches (65a) are in the locking position and the lower latches (65b) are in the unlocked position; a second configuration in which the upper (65a) and lower (65b) latches are in the locked position; and a third configuration in which the upper latches (65a) are in the unlocking position and the lower latches (65b) are in the locking position. The docking system (4) according to claim 1, wherein the upper mounting system comprises, for each upper lock (65a): - an upper cam path (64a) provided on an upper portion of the rotary device (63a); ); - An upper follower (66a), including the roller type, mounted on the upper latch (65a) corresponding and in contact with the upper cam path (64a). 3. docking system (4) according to claims 1 or 2, wherein the lower mounting system comprises, for each lower lock: - a lower cam path (64b) provided on a lower portion of the rotary device (63) ; - A lower follower (66b), including the roller type, mounted on the lower latch (65b) corresponding and in contact with the lower cam path (64b). 4. docking system (4) according to claims 2 and 3, wherein the rotary device comprises a plate (63) having an upper face in which are formed the upper cam paths (64a), and an opposite lower face in which are arranged the lower cam paths (64b). A docking system (4) according to any one of the preceding claims, further comprising docking locks (14) shaped to lock a flange (8) of the enclosed enclosure (3) on the cell flange. (5), said docking locks (14) being mounted under the docking flange (5) and movable in radial translation between a locking position in which the docking locks (14) project radially towards the interior of the docking flange (5) for cooperating with a circumferential groove (90) formed on the flange (9) of the closed enclosure (3), and an unlocking position in which the docking locks (14) are retracted to the outside of the docking flange (5). The docking system (4) according to any one of the preceding claims, wherein the cell door (6) further comprises a lower latch guide member (67) (65b) which is secured to a lower face of the outer ring gear (60) and which supports the lower locks (65b) and at least partly the lower mounting systems, said guide member (67) comprising radial through-holes for the passage and guiding of the lower locks ( 65b). The docking system (4) according to any one of the preceding claims, wherein the cell door (6) further comprises a rotational locking device (16) normally blocking the rotation of the rotary device (63) by the absence of a closed enclosure (3) approached on the docking flange (5), and automatically unlocked by the docking of the closed enclosure (3) on the docking flange (5). 8. docking system (4) according to claim 7, wherein the rotational locking device (16) comprises: - a locking pin (160) slidably mounted in a through bore formed in the outer ring (60) of the cell door (6) and having a lower part (162) and an opposite upper part (163), said locking finger (160) being movable between: - a locking position in which the upper part (163) is in socket with a notch (630) in the rotary device (63) to block its rotation, and the lower part (162) protrudes from a lower face of the cell door (6); and - an unlocking position in which the upper part (163) is released from said notch (630) to release the rotation of the rotary device (63), and the lower part (162) is pushed towards the outer ring (60) , in particular under the effect of a thrust exerted by the closed enclosure (3); - A return device (164) tending to move said locking finger (160) to the locking position. 9. docking system (4) according to claims 6 and 8, wherein the locking pin (160) through the guide member (67) and, in its unlocking position, its lower portion (162) protrudes a lower face of said guide member (67). A docking system (4) according to any one of the preceding claims, further comprising a rotational drive system of the rotary device (63), of the type comprising a hub (182) attached to an upper face of the outer ring (60) of the cell door (6), and having a central bore in which is rotatably mounted a rotating shaft (185) rotating said rotary device (63). 11. docking system (4) according to claim 10, wherein the hub (182) and / or the outer ring (60) have radial through spaces for the passage and guiding of the upper latches (65a). 12. docking system (4) according to claims 10 or 11, further comprising an opening / closing system (17) by tilting the cell door (6), of the type comprising: - a frame (170) fixed; - A motorized system driving in rotation an output shaft (171) rotatably mounted on said frame (170); a frame (175) rotatably mounted on said output shaft (171); - at least one guide column (196, 197) in translation of the hub (182), wherein the or each guide column (196; 197) is mounted in a first bearing (198; 199) fixed to the hub (182) and is guided in translation in a second bearing (180; 181) mounted on the frame (175); - a connecting rod (200) having a lower end (201) rotatably connected to said output shaft (171) and an upper end (202) on which is fixed an axis (203); - a rocker (204) having a central articulation (205) pivoted on said frame (175) and, on either side of said central hinge (205), a rear portion (206) in which is formed an oblong hole (208) traversed by said axis (203) , and two front arms (207) whose free ends are pivotally articulated on rods (209), said links (209) being also pivotally articulated on the hub (182); so that the rotation of the output shaft (171) causes: - initially and concomitantly, the rotation of the connecting rod (200) which causes the rocker (204) to tilt around its central articulation ( 205), which causes the hub (182) and the cell door (6) guided by the guide column or columns (196, 197) to translate in translation with the frame (175) which remains stationary up to that the axis (203) abuts in a bottom of the oblong hole (208) and that the hub (182) abuts against the frame (175); then - in a second step, the common pivoting of the frame (175), the hub (182), the cell door (6), the connecting rod (200) and the rocker (204), around the shaft output (171). 13. docking system (4) according to claim 12, further comprising a device for blocking the rotation of the rotary device (63) in the third configuration, comprising: a locking pin (211) fixed to the frame ( 175) of the opening / closing system (17) and passing through the hub (182); and an orifice (213) formed on an upper face of the rotary device (63) and positioned opposite said locking pin (211) when the rotary device (63) is in the third configuration, so that said locking finger ( 211) engages in said orifice (213) after the translational movement of the hub (182) and the cell door (6). 14. Enclosure closed (3) for installation (1) waterproof transfer double door, of the type comprising a body (30) hollow, said enclosure flange (8) attached to an upper and open end of the body (30). ), said enclosure flange (8) having a generally annular shape and delimiting an access opening inside the enclosure (3), and a so-called enclosure door (9) for closing said access opening, said closed enclosure (3) being characterized in that the enclosure door (9) 2 994 533 39 comprises an annular wall (91) mounted contiguous in said enclosure flange (8) in a position d shutter and a bottom (93) bordered by said annular wall (91), and in that said annular wall (91) has on its inner periphery a circumferential groove (90) shaped for the locking of the enclosure door ( 9) on a cell door (6) of a docking system (4) according to any one of the preceding claims toothless. 15. Enclosure closed (3) according to claim 14, wherein the enclosure door (9) has latching means (92) on the outer periphery of its annular wall (91), and in that the flange enclosure (8) has complementary latching means (84) on its inner periphery. 15 16. Enclosure closed (3) according to claim 15, wherein the latching means consist of tabs (92) elastically deformable and complementary latching means consist of an annular projection (84) on the inner periphery of the enclosure flange (8). 20 17. Enclosure closed (3) according to any one of claims 14 to 16, wherein the enclosure flange (8) has on its outer periphery an annular protrusion (81) forming a flange which overhangs a groove (80) circumferential arranged on said outer periphery. 25