EP0301037B1 - Installation d'irradiation - Google Patents

Installation d'irradiation Download PDF

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Publication number
EP0301037B1
EP0301037B1 EP88900339A EP88900339A EP0301037B1 EP 0301037 B1 EP0301037 B1 EP 0301037B1 EP 88900339 A EP88900339 A EP 88900339A EP 88900339 A EP88900339 A EP 88900339A EP 0301037 B1 EP0301037 B1 EP 0301037B1
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EP
European Patent Office
Prior art keywords
irradiation
conveyor
tracks
plant according
transport
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Expired - Lifetime
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EP88900339A
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German (de)
English (en)
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EP0301037A1 (fr
Inventor
Ernst Bosshart
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Sulzer AG
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Gebrueder Sulzer AG
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • G21K5/02—Irradiation devices having no beam-forming means

Definitions

  • the invention relates to an irradiation system with an irradiation chamber and a transport system for transport units, which are guided past a radiation source with goods to be irradiated, which has an even number of radiation paths arranged symmetrically to the radiation source, which run between a first and a second transverse path, each of which one or other ends of the radiation pathways and of which a cross pathway is connected to the input and output path of the transport system to and from the radiation chamber.
  • An irradiation system is known from CH Pat. Nos. 536 544 and 537 076, in which goods are irradiated with ⁇ rays, for example for disinfection or to change their physical properties.
  • the transport units are moved in batches around a radiating wall for a predetermined time for each batch and along a predetermined path pattern that is the same for all transport units.
  • this known system fulfills its task in a satisfactory manner. There in this case the change from one radiation program to another does not have to take place too often, the operating costs are not excessively burdened by necessary changeover costs.
  • the radiation system should offer a high degree of safety for the operating personnel. The staff should not have to enter the facility during operation.
  • each cross track has a shifting device for loading and unloading and reloading the irradiation tracks with and from the transport units and the transport units have control elements with which the path of each T transport unit in the transport system is predetermined, and which sensors on a control of the transport system are used and that the control is designed such that each time an irradiation path is loaded or unloaded with or from a transport unit there is one of the shifting devices at its two ends and that at the end of each Loading or unloading at most one of these two opposite shifting devices is loaded with a transport unit.
  • the dependent claims relate to advantageous developments of the radiation system.
  • the individual preselection of the path in the radiation chamber for each individual transport unit enables a large number of different goods to be irradiated to run through the radiation chamber at the same time and the different ones to be used in accordance with the radiation requirements entered Run through lanes.
  • the fact that only one of the shifting devices on the transverse tracks opposite each other during loading and unloading is occupied by a transport unit ensures that the transport units pass through their individual paths through the irradiation chamber without problems.
  • Figures 1a and 1b represent an irradiation system according to the invention, with a wall-shaped radiation source 2 in an irradiation chamber 1 and a transport system with four irradiation tracks 3 arranged symmetrically thereto, which are arranged between two transverse tracks 4 and 4A.
  • a plurality of transport units 5 carried and guided by the irradiation tracks 3 and transverse tracks 4, 4A, each of which is loaded with two pallets 6 arranged one above the other with material to be irradiated, are moved with the chain drives 7 over the different tracks.
  • the transverse path 8 is connected to the input path 15 and the output path 16.
  • Each of the transport units 5 has control elements which act on sensors of the control which are attached along the tracks and thus guide the transport units 5 along their own path pattern along the irradiation tracks 3 and transverse tracks 4, 4A.
  • a shifting device 8 and 8A each move from and to the ends of the different irradiation tracks 3, shut-off tracks 31, input route 10, 15 and output route 11, 16.
  • a drive 100 drives the transfer carriages 8 and 8A always together and in the same direction, so that they are always opposite.
  • Controlled blocking devices (not shown in FIGS. 1 a and 1 b) prevent both moving devices 8, 8 A from being loaded with a transport unit 5 after a loading or unloading process of a moving device 8 or 8 A.
  • the radiation chamber 1 is surrounded by a concrete box, which protects the surroundings from, for example, radioactive ⁇ , ⁇ or ⁇ rays from the radiating wall 2 and is connected to the latter by means of an entrance labyrinth 10 and an exit labyrinth 11.
  • the transport system 12 passes through an unloading station 13, where the pallets 6 with irradiated goods are unloaded from the transport units 5 and a loading station 14, where the transport units 5 with the pallets 6 are loaded onto the transport units 5 with the material to be irradiated.
  • the transport units 5 land via the entry section 10 and the connecting path 15 to the transfer carriages and to the irradiation sections 3.
  • the exit section 16 crosses the exchange station 17 in which the pallets 6 arranged one above the other on the transport levels can be exchanged, a lift 18 and below that a lift shaft 19 are arranged .
  • the inlet and outlet sections 15 and 16 are designed in the same way as the radiation paths 3.
  • drive motors 7 ', 7 ⁇ for the chain drives 7 are arranged in the region of the radiation path 3 and in the region of the input and output sections 16 and 17.
  • the two drive motors 8 'for the shifting devices 8, 8A, drive their chain drives.
  • the motor 18 for the elevator 18 and the drive 21 'for the hoist 21 of the radiation source 2 are also located on the ceiling of the concrete box 9 outside the radiation area of the radiation source 2, which greatly facilitates their maintenance.
  • Each transport unit 5 can travel in the radiation chamber along the radiation paths 3 and transverse paths 4, 4A with the shifting devices 8, for example a path shown in FIGS. 2a to 2f.
  • the way is going duration and dose of radiation selected depending on the desired intensity. Combinations of the path patterns shown are also possible.
  • the transport units 5 are preferably moved at a constant average speed.
  • the design and arrangement of the radiation source 2 can be seen from FIGS. 3a, 3b and 3c.
  • it consists of two walls 22, essentially the shape of a thin parallelepiped and vertically movable along two rails 23, in which individual radiation sources are enclosed in modules.
  • the height of the source wall 22 is less than half of the transport unit 5 (FIG. 1b), so that by changing the height of the walls 22 an optimization of the radiation distribution on the material to be irradiated can be achieved.
  • a horizontal shaft 25 rotatable in two roller bearings 24, at the two ends of which pinions 27 (FIG. 3c) are fastened, which engage in chains 28 which engage on the inside of the rails 23 are attached.
  • the guidance of the radiation source 22 is further improved with two wheels 29, each of which rolls on the inner surface of the rails 23 and is rotatably fastened in the lower region of the radiation source 22.
  • the hoist 21 is connected to the steel cable 30 with the radiation sources 22. In their deepest positions (FIG. 3b) within the basin 20, the two radiation sources 22 are arranged next to one another, whereby a substantial saving in the dimensions of the container 20 is achieved. Instead of the chains 28, it would also be possible to use racks.
  • each transport unit 5 consists of an aluminum box 50, which defines two approximately cube-shaped rooms arranged one above the other: a lower room 51 and an upper room 52, with two sides open to the tracks and the transport planes 57 attached to which two pairs of rollers are attached to the rollers 54.
  • the coupling piece 53 has two open grooves 55, which have the distance z.
  • the web 3 consists of two "U" -shaped beams 3 ', which are arranged with their open sides opposite one another, at a distance which is somewhat larger than the thickness of the coupling piece 53.
  • the rollers 54 run on the inside of the carrier 3 '.
  • the transport units 50 hang with the coupling piece 53 and run on the tracks 3 with the rollers 54. Cams of the drive system engage in the grooves 55.
  • each room 51, 52 On the floors or transport levels 57 of each room 51, 52 are two rows of rollers 56 onto which the pallets 6, which in turn stand on an aluminum or steel base 58, are pushed. Between the rollers 56, for example in the middle of the transport planes 57, there is a brake and holding device 60 with which the pallets 6 and bases 58 are held. To actuate the brake 60, a rod 61, which protrudes from the wall in the upper region of the box 50, is slidably arranged in a wall of the box 50. The rod 61 has a pressure plate 62 at its upper end. A compression spring 63 acts between the pressure plate 62 and the ceiling of the box 50, which pushes the rod 61 upwards.
  • a rotatable round rod 64 is mounted, one end of which is fixedly connected to a lever 65 and the other end of which is connected to a gearwheel 66.
  • the Lever 65 is articulated to the rod 61, and the gear 66 cooperates with a rack 67 to which the brake 60 is fixed. If the rod 61 is now pressed against the spring 63, the brake 60 is lowered and the pallets 6 can be unloaded or loaded. In the example shown, the brakes are released by a pressure roller 68 which is fastened to one of the “U” carriers 3 ′ and act on the pressure plates 62.
  • Each transport unit 5 has control elements, which in the present example have the form of levers 70 fastened in the upper region of the box 50, which can be latched in and unclipped, and optionally act on the control by means of switches 71 fastened to the "U" carriers 3 '. 5a and 5b, the levers 70 are rotatably arranged in a support structure 72 firmly connected to the box 50, in which a spring-loaded plunger 73 acts on each lever 70 such that the lever 70 is held in one or the other of two stable positions becomes. In the notched position, the levers 70 act on the associated switches 71 (FIG. 5a) and in the notched position they pass the respective switches 71, which are the sensors of the control.
  • switches or sensors 17 of the control are attached to each branch along the tracks.
  • the radiation path which can be individually selected for each transport unit 50 is set by the operating personnel on the levers 70.
  • the lever 70 and / or switch 71 can be present several times, which further increases operational reliability.
  • the grooves 55 of the coupling pieces 53 interact with cams 79 of drive chains 75 for the transport units 5.
  • Fig. 6 shows four pinions 76 of the drive system 7.
  • Die Drive chain 75 has five driver cams 79 which engage in the grooves 55 of the coupling pieces 53 of the transport units 50.
  • the drive chain 75 and the cams 79 are designed and arranged such that at least one of them is always engaged in a groove 55, so that the transport unit 5 is always guided via the coupling piece 53.
  • the chain 75 is driven, for example, via a bevel gear seated on a shaft 76 ', which is driven by a drive bevel gear, and which is driven by the shaft of a drive motor which is guided through the ceiling of the concrete box 9.
  • the same distance z is provided between two adjacent drive chains 75 as between the grooves 55 of the coupling piece.
  • the drive chains 75 'of Fig. 7a are designed so that with a chain at the same time several transport units 5 located on a track can be driven.
  • Each displacement device 8, 8A contains a track 3, which is formed from "U" beams 3 '.
  • the carrier 3 ' are held together by two reinforced sheet metal walls 80 at their upper ends.
  • two rail wheels 81 are attached, which run on the rails 4 'of the cross track 4 and 4A.
  • the displacement device 8, 8A is guided so that the ends of the carrier 3 'come so close to the radiation tracks 3, the shutdown tracks 31 and the entry and exit routes 15 and 16, so that the transition of the transport units from one track to the other is possible .
  • Each displacement device 8, 8A has, for example, a chain drive 7 for conveying the transport units 5 to the respective tracks.
  • the sheet metal walls 80 each have a passage 82 for the coupling pieces 53 of the transport units 5.
  • the drive 100 (FIG. 1) of the displacement devices 8, 8A takes place e.g. via pull chains 83, 84 which are guided over sprockets 85. Both in the pull chain 83 and in the drive chain 84, one of the chain wheels 85 is fastened to a tension spring 86 on the wall of the concrete box 9. The other sprocket 85 of the pull chain 83 is connected to a shaft piece 88 'and the further sprocket 85 of the drive chain 84 to a drive shaft 88.
  • the shaft piece 88 'and the drive shaft 88 are connected to each other via the coupling 90 and the drive shaft 88 is driven via bevel gears 91 with the shaft 108 of the drive motor 8' penetrating through the ceiling of the concrete box 9 '. All sprockets 85 can be made the same.
  • the drive chain 84 drives another sprocket 93, which is fastened to the displacement device 8, 8A, and is guided with the two pinions 94.
  • a chain wheel 93 fastened to the displacement device 8, 8A drives the drive chain 7 via a transmission 95, a pinion 96, an auxiliary chain 97 and a pinion 98.
  • each clutch 90 consists of two identical bevel gears 91, one of which is fixedly connected to the drive shaft 108 and the other to the shaft piece 88 and from a slidable, double bevel gear 87 ', which in the engaged position in the engages two bevel gears 92.
  • the double bevel gears 87 'of the two clutches 90 are rotatably mounted on a connecting shaft 87 and this is connected to the piston rod 103 and the piston 102 displaceable in the cylinder 101.
  • the piston rod 103 extends through the piston 102 to the changeover switch 104.
  • the changeover switch 104 optionally connects an electrical current source 105 to one of two electrical lines 106 or 107.
  • Each of the lines 106, 107 has a branch point 110 and leads to the drive motors 8 'of the two displacement devices 8, 8A.
  • One line 106 has a switch 106 'between the branch point 110 and each drive motor 8', while the other line 107 has only one switch 107 'between the changeover switch 104 and the branch point 110.
  • the cylinder 101 there are two connections 109, via which the pneumatic pressure switch, for example, is actuated with the piston 2.
  • the drive of the transport system shown in FIGS. 7a, 7b and 7c functions as follows:
  • the drive motor 8 ' drives the drive shafts 88 via the bevel gears 91.
  • Each drive shaft 88 drives via one of the chain wheels 85, one of the drive chains 84, chain wheel 93, gear 95, pinion 96, auxiliary chain 97 and pinion 98 on the drive chain 7 and thereby causes the drive of the transport unit 5, which is located in the displacement device 8, 8A.
  • the pull chains 83 are driven via the chain wheels 85 and thus the two displacement devices 8 and 8A are displaced along the transverse tracks 4 and 4A.
  • the switch 104 is switched and now connects the power source 105 with the two switches 106 'having line 106, with which the drive motors 8' can be actuated individually to selectively load a transport unit 5 onto or from a displacement device 8, 8A.
  • 7c shows only a simple form of a suitable circuit. However, there are a number of other circuit arrangements that would also be suitable for the transport system. This circuit should advantageously be designed in such a way that the clutch 90 can only be released when the shifting devices 8, 8A are aligned with an irradiation path 3 or stop path 31.
  • the shifting devices 8, 8A Brakes are provided which can only be released in the coupled position of the clutch 90 and with the drive motors 8 'switched on. There must also be reversing switches which allow the drive motors 8 'to run in both directions of rotation.
  • the transport system can have a network of sensors, which are attached to the branches of the tracks and on the various shifting devices 8, 8A, and which continuously check the loading status of tracks and shifting carriages, e.g. transmit a control unit, which can be a computer.
  • the control unit in turn can act on blocking devices for the transport units, which can be along the tracks and on the sliding devices 8, 8A.
  • FIG. 7d A possible arrangement of blocking means is shown schematically in FIG. 7d.
  • the blocking takes place in this arrangement in that certain drive chains 75, 75 'cannot be put into operation with a certain occupancy of the shifting devices 8, 8A or with a different occupancy of the tracks and shifting devices 8 8A, depending on the path taken by the transport units 5 have to go through before a transport unit 5 has to be unloaded from a displacement device 8, 8A.
  • the blocking device comprises signal transmitters 36 arranged as close as possible to the radiation tracks 3, on which e.g. on rods 35 attached rollers 35 'act on the transport units.
  • the signal transmitter 36 is connected via the signal line 37 to the control and control unit 38, which in the case shown prevents the loading of the displacement device 8 as long as the displacement device 8A is loaded with a transport unit.
  • the drive motors 7 ', 7 ⁇ , 8' should run synchronously with one another or a sequence control must be present.
  • the transport system can also have horizontally or obliquely arranged chains which interact with coupling pieces 53 mounted elsewhere on the transport units 5.
  • the grooves 55 can also be oblique or curved.
  • the change station 17 with the lift 18 is used for this purpose, which is explained with reference to FIGS.
  • the lift 18 hangs on a steel cable 30 passing through the ceiling of the concrete box 9.
  • the motor 18 ⁇ drives the winch 18 'of the lift.
  • the lift 18 is guided with rails and can be pushed down and up in an actual lift shaft 19.
  • the lift 18 is essentially the same aluminum box as that of the transport units 5 and can also have rollers and a brake for the pallets.
  • the pressure rollers 68 for setting the brake are arranged in the rails during the lift and act on the rod 62 of the brake 60 via a lever system.
  • the lift 18 is arranged such that e.g. transport units 5 traveling on the exit route 16 can be moved very close and that the two rooms 51 and 52 of the lift and transport unit are opposite one another.
  • the change station 17 has, for example, three double-acting hydraulic cylinders 40, the piston chambers 41, 42 of which can optionally be pressurized.
  • Each piston 43 is connected to one end of a spindle 44, at the other end of which one or more slides 45 are arranged.
  • Two functionally independent cylinders 40 arranged one above the other are arranged such that the transport units 5 come to lie between them and the lift 18.
  • the exchange station 17 works as follows:
  • a transport unit 5 loaded with pallets 6 is moved to the elevator 18.
  • a pressure roller 68 is arranged in the changing station 17 on the exit path 16 and, as described, releases the brakes 60 of the transport unit 5 for the pallets 6.
  • the slides 45 are moved against the pallets 6 (FIG. 8b) and then the pallets 6 with the bases 58 are moved from the transport unit 5 onto the lift 18 with the aid of the slides 45 (FIG. 8c).
  • the two sliders 45 which reload a pallet 6 together, prevent the loads from tipping over. Then the sliders 45 become theirs Returned starting positions, so that the lift 18 can be raised and the lower pallet 6 can be pushed back with two sliders 45 from the lift 18 into the upper space of the transport unit 6 (Fig. 8d).
  • the slider 45 are then returned to their starting position. Then the lift 18 is moved down and the upper pallet 6 is moved from the lift 18 into the lower space 51 of the transport unit 5 with the aid of the slider 45 (FIG. 8e). Finally, the slides 45 are brought into their initial position and the transport unit 5 runs back onto the irradiation tracks to continue the irradiation.
  • the radiation system according to the invention works as follows:
  • the transport units 5 are loaded in the loading station 14, preferably with two pallets 6 each, and travel in the transport system 12 along the entrance labyrinth 10 to the irradiation chamber 1.
  • the transport units 5 are moved from the transport system 12 to the beginning of the entrance route 15, from where they are taken the chain drive 7 to the displacement device 8 and from there on the cross tracks 4, 4A and the irradiation tracks 3 conveyed.
  • Each transport unit 5, in the loading station 14, runs through the path specified with the latching and unlatching of the levers 70.
  • an intermediate stop in the exchange station 17 for reloading the pallets 6 and the displacement of the radiation sources 22 can be prescribed.
  • the transport unit 5 is conveyed on the exit path 16 and the exit labyrinth 11 to the exit and to the unloading station 13.
  • the embodiment shown here is a preferred embodiment of the invention.
  • the number of radiation tracks 3 can be adapted to the radiation requirements.
  • the drive for the transport units and for the displacement devices can also take place in a different way, for example hydraulically or pneumatically.
  • other track systems can also be suitable for guidance, e.g. Floor tracks, taxiways, air, gas or liquid cushion tracks.
  • the transport units can also be designed for a number other than two pallets and these can also be arranged differently than one above the other.
  • hydraulic hoists could be used as the hoist drive for the lift (18) and for the radiating wall (2).
  • the switches and sensors can be electrical, electronic, hydraulic or pneumatic. As far as possible, they should be installed outside the radiation area or protected against radiation, since electrical and electronic components in particular can be damaged by the radiation. It is also possible to carry out the control with a synchronously running model of the transport system, which is arranged outside the radiation chamber.
  • the shifting devices 8, 8A are only common, in the same direction and therefore always move in opposite directions. This embodiment is very simple and clear and is therefore often preferred.
  • embodiments of the system according to the invention are conceivable, in which the displacement devices 8, 8A also run independently of one another, in which In this case, the control must be designed in such a way that a transport unit 5 is not moved to or from one of the irradiation tracks 3 unless there is a sliding carriage 8, 8A at both ends.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Control Of Conveyors (AREA)
  • Types And Forms Of Lifts (AREA)
  • Warehouses Or Storage Devices (AREA)

Abstract

L'installation d'irradiation présente une chambre (1) d'irradiation munie d'une source (2) de rayonnement et d'un système de transport. Le parcours de chaque unité de transport peut être préétabli individuellement à l'aide d'éléments de commande fixés à celles-ci. Les produits à irradier sont chargés sur des unités de transport et placés sur des voies (10, 11) ainsi que sur des dispositifs de déplacement (8, 8A) de deux voies transversales (4, 4A), puis retirés des voies d'irradiation (3). Lors du chargement ou du déchargement d'une voie d'irradiation (3) avec les dispositifs de déplacement (8, 8A), un dispositif de déplacement (8, 8A) de chaque voie transversale (4, 4A) se trouve toujours à chaque extrémité de la voie d'irradiation (3). Aux embranchements et aux points de transition des voies du système de transport sont placés des détecteurs qui sont reliés à une commande qui veille à charger un au plus des deux dispositifs de déplacement (8, 8A) situés en face l'un de l'autre, après chaque opération de chargement et de déchargement d'une voie d'irradiation (3). Une telle installation d'irradiation permet d'irradier simultanément de petites quantités de différents produits et n'exige que rarement une réadaptation. L'exploitation de l'installation est nettement plus économique que celles des installations connues.

Claims (14)

1. Installation d'irradiation comprenant une chambre d'irradiation (1) et un système de convoyage d'unités de transport (5) qui sont amenées à passer avec les produits devant être irradiés devant une source de rayonnement (2), installation qui comporte un nombre pair de voies d'irradiation (3) qui sont disposées symétriquement par rapport à la source de rayonnement (2) et qui passent entre une première (4) et une seconde voie transversales (4A) qui relient les unes ou les autres extrémités des voies d'irradiation (3) et dont une voie transversale (4) est en communication par le trajet d'entrée (10, 15) et le trajet de sortie (16, 11) du système de convoyage avec l'admission à la chambre d'irradiation (1) et la sortie de cette dernière, caractérisée en ce que chaque voie transversale (4, 4A) comprend un dispositif de déplacement (8, 8A) destiné à charger les voies d'irradiation (3) en unités de transport (5) et à en effectuer le déchargement ainsi que le transbordement et les unités de transport (5) comportent des éléments de commande (70) qui prédéterminent le trajet de chaque unité de transport (5) dans le système de convoyage et qui agissent sur des détecteurs (71) d'une commande du système de convoyage, et en ce que la commande est conçue de manière qu'à chaque fois qu'une voie d'irradiation (3) est chargée d'une unité de transport (5) ou en est déchargée, l'un des dispositifs de déplacement (8, 8A) se trouve aux deux extrémités de cette voie, et en ce qu'à la fin de chaque chargement ou déchargement, au maximum l'un de ces deux dispositifs de déplacement (8, 8A) qui sont opposés l'un à l'autre est chargé d'une unité de transport (5).
2. Installation d'irradiation selon la revendication 1, caractérisée en ce que les éléments de commande qui sont prévus sont des leviers enclenchables et déclenchables (70) qui sont fixés sur les unités de transport (5) et les leviers n'agissent sur les détecteurs (71), qui sont disposés le long des trajets de transport, que lorsqu'ils occupent l'une de ces deux positions.
3. Installation d'irradiation selon l'une des revendications 1 ou 2, caractérisée en ce que la source de rayonnement (22) est conformée en paroi et peut être descendue au moyen d'un mécanisme élévateur (21), en étant guidée dans des rails (23), dans un bassin d'eau (20).
4. Installation d'irradiation selon la revendication 3, caractérisée en ce qu'une crémaillère ou une chaîne (28), dans laquelle engrène un pignon (27) monté sur la source de rayonnement (22), se trouve le long de chaque rail (23).
5. Installation d'irradiation selon l'une des revendications 1 à 4, caractérisée en ce que la source de rayonnement se compose d'au moins deux émetteurs (22) en forme de paroi.
6. Installation d'irradiation selon l'une des revendications 1 à 5, caractérisée en ce que les unités de transport (5) présentent plusieurs plans de transport superposés (57).
7. Installation d'irradiation selon la revendication 6, caractérisée en ce qu'un poste d'échange (17) se trouvant dans la chambre d'irradiation (1) est destiné à la permutation des produits devant être irradiés et se trouvant sur les plans de transport superposés (57).
8. Installation d'irradiation selon l'une des revendications 1 à 7, caractérisée en ce que les unités de transport (5) comportent sur chaque plan de transport (57) un frein desserrable de retenue (60), en ce que les plans de transport (57) comportent des rouleaux (56) sur lesquels prennent appui les supports (6, 58) des produits devant être irradiés et en ce que les supports (6, 58) peuvent être chargés et déchargés sur ces rouleaux (56) au moyen de poussoirs (45) actionnés par fluide sous pression et coopérant les uns avec les autres.
9. Installation d'irradiation selon l'une des revendications 1 à 8, caractérisée en ce que l'entraînement des unités de transport (5) est assuré par des chaînes d'entraînement (75) et par des ergots d'entraînement (79) qui s'engagent dans des gorges (55) de pièces d'accouplement (53) des unités de transport (5).
10. Installation d'irradiation selon l'une des revendications 1 à 9, caractérisée en ce que chacune des deux voies transversales (4, 4A) comprend un unique dispositif de déplacement (8, 8A) et en ce que l'entraînement des deux dispositifs de déplacement (8, 8A) sur les voies transversales (4, 4A) s'effectue dans le même sens.
11. Unité d'irradiation selon la revendication 10, caractérisée en ce que chaque dispositif de déplacement (8, 8A) comprend un entraînement (7′) des unités de transport (5) et en ce que chaque entraînement (7′) est accouplé à l'entraînement (8′) des dispositifs de déplacement (8, 8A) de telle manière qu'il n'y ait jamais qu'un seul de ceux-ci qui soit actif.
12. Unité d'irradiation selon l'une des revendications 1 à 11, caractérisée en ce qu'au moins une voie d'attente (31) destinée à recevoir des unités de transport (5) se trouve dans la chambre d'irradiation.
13. Installation d'irradiation selon l'une des revendications 1 à 12, caractérisée en ce que les voies (3, 3, 8, 8A, 10, 11, 15, 16, 31) du système de convoyage sont réalisées sous forme de voies suspendues.
14. Installation d'irradiation selon l'une des revendications 1 à 13, caractérisée en ce que la source de rayonnement (2, 22) est une source de rayonnement radioactif.
EP88900339A 1987-02-11 1988-01-05 Installation d'irradiation Expired - Lifetime EP0301037B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH50487 1987-02-11
CH504/87 1987-02-11

Publications (2)

Publication Number Publication Date
EP0301037A1 EP0301037A1 (fr) 1989-02-01
EP0301037B1 true EP0301037B1 (fr) 1991-11-27

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EP88900339A Expired - Lifetime EP0301037B1 (fr) 1987-02-11 1988-01-05 Installation d'irradiation

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US (1) US4866281A (fr)
EP (1) EP0301037B1 (fr)
CA (1) CA1293100C (fr)
DE (1) DE3866455D1 (fr)
WO (1) WO1988006340A1 (fr)

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Publication number Priority date Publication date Assignee Title
US5400382A (en) * 1992-04-19 1995-03-21 Alpha Omega Technologies, Inc. Automated irradiator for the processing of products and a method of operation
US6215847B1 (en) 1998-09-15 2001-04-10 Mds Nordion Inc. Product irradiator
US6191424B1 (en) 1998-12-03 2001-02-20 I-Ax Technologies Irradiation apparatus for production line use
US6713773B1 (en) 1999-10-07 2004-03-30 Mitec, Inc. Irradiation system and method
US6429608B1 (en) 2000-02-18 2002-08-06 Mitec Incorporated Direct injection accelerator method and system
US6653641B2 (en) 2000-02-24 2003-11-25 Mitec Incorporated Bulk material irradiation system and method
US6707049B1 (en) 2000-03-21 2004-03-16 Mitec Incorporated Irradiation system with compact shield
US6529577B1 (en) * 2000-12-29 2003-03-04 Surebeam Corporation System for, and method of, irradiating article with x-ray beam
CA2443150A1 (fr) * 2001-04-02 2002-10-10 Mitec Incorporated Systeme et procede d'irradiation
US7154103B2 (en) * 2001-04-02 2006-12-26 Mitec Incorporated Method of providing extended shelf life fresh meat products
US6683319B1 (en) 2001-07-17 2004-01-27 Mitec Incorporated System and method for irradiation with improved dosage uniformity
US6763085B2 (en) 2001-10-22 2004-07-13 Cleaner Food, Inc. Irradiation apparatus and method
US20070215821A1 (en) * 2003-05-01 2007-09-20 Stirling Andrew J Shielded Irradiation Zone Of Production Line
US20070237866A1 (en) * 2006-03-10 2007-10-11 Mitec Incorporated Process for the extension of microbial life and color life of fresh meat products

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
GB982691A (en) * 1960-05-25 1965-02-10 Atomic Energy Authority Uk Improvements in or relating to transfer mechanisms for overhead railways in package irradiation plants
GB934217A (en) * 1960-09-26 1963-08-14 Atomic Energy Authority Uk Improvements in or relating to package irradiation systems
CH537076A (de) * 1971-04-05 1973-05-15 Sulzer Ag Bestrahlungsanlage
CH582404A5 (fr) * 1974-09-02 1976-11-30 Sulzer Ag

Also Published As

Publication number Publication date
DE3866455D1 (de) 1992-01-09
EP0301037A1 (fr) 1989-02-01
CA1293100C (fr) 1991-12-17
WO1988006340A1 (fr) 1988-08-25
US4866281A (en) 1989-09-12

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