DE2118401B2 - IRRADIATION SYSTEM WITHIN WHICH THE GOOD TO BE RADIATED IS CURVED AROUND A GAMMA RADIATION SOURCE - Google Patents

Description

The invention relates to an irradiation system with an irradiation chamber, within which the to be irradiated Well guided around a gamma ray source, being in the irradiation chamber at least two movement paths are provided for the material, the first of which - from the radiation source seen from - is arranged within the second trajectory.

In the known irradiation systems this

49 ') have such hanging rails in which the 55 type (German Auslegeschriften 1228 562, 1225 553, Support rollers of the racks are retractable. French Patent 1,573,129 and British

10. Plant according to claim 9, characterized in patent specification 1030 635) the item is recorded on the fact that for the frames of each movement different conveyor tracks of one and the same conveyor track (171,170) moves at least four pushing devices and so genes in a certain way (2V, P, S, T; N ', P', 5 ', T ^ are provided, with- 60 passed the radiation source several times, by means of which the racks in a cycle are made of a lifting plate (40; 42), which is irradiated on the irradiating in such systems, results under

treatment chamber (1) facing away from the shielding wall (7) is located in a lifting plate (45; 44), which is located on the side of the shielding wall (7) facing the irradiation chamber (1), from this lifting plate (45; 44) into the irradiation chamber (1), from there into a lifting plate (46; In some circumstances an uneconomical operation, since in such cases the radiation is not always well utilized can be. If goods of low density and correspondingly low absorption capacity are irradiated, so this leads, if a high irradiation efficiency is desired, because of the necessary thickness of the vom

3 4

The absorption layer formed to be irradiated

a very large irradiation chamber. the irradiation chamber 1 facing side of the

The invention is based on the object of providing a shielding wall 7 and the ceiling 4

Irradiation system of the type mentioned to be penetrated vertical leg 8, which is based on create that allows a simultaneous side facing away from the irradiation chamber 1 at the same time

lent the utilization of optimal irradiation of Gü- the shielding wall 7 extending, vertical, in

tern with a different dose and / or strongly divided into two staggered sections 10, 11

different layer thicknesses. and the one connecting these two legs,

According to the invention, this object is achieved by horizontal, above the shielding wall 7, that a separate, io borrowed section is formed for each trajectory. The other maze corridor

independent of the other operable promoters is designed the same; the thigh on that of the irradiating

direction is provided. treatment chamber 1 facing side of the shielding

The new system has the advantage that it is a wall 7 with 9, the mutually offset sections

particularly economical mode of operation is possible, the other leg are 10 and 12 and the by z. B. on the outer trajectory a good 15 horizontal connecting section is denoted by 14-

with low density and on the inner web a net.

Specifically heavy goods with strong radiation absorbers The sections 10 form a common

tion is guided past the radiation source. We space (Fig. 1). Between the horizontal

Due to this combination option, the sections 13 and 14 of the two labyrinth passages can be irradiated much smaller dimensions 20 there is a vertical central wall 15, which extends from

obtain. Because of the shielding wall 7 that operates independently of one another, up to one of the labyrinth

The system is particularly suitable for the upwardly delimiting intermediate ceiling 51

adaptable in that the property extends to the movement and the in F i g. 1 as well as the vertical ones

supply paths with mutually different legs 8 and 9 is indicated by dotted lines. The slowdowns lead past the radiation source 25 are sections 10 on the one hand and 11 and 12 on the other hand

leaves. each via an access 18 or 18 '(FIG. 1) and each

One embodiment of the invention is shown in one output 19 (FIG. 3) or 19 '(in FIG. 3)

following description on the basis of the drawing is located at output 19) connected to the outside world

purifies. It shows that.

F i g. 1 shows a horizontal section of the invention according to the line I-I in four angled rails to form two vertical rails F i g. 2, guide tracks 24 and 25 arranged, of which F i g. 2 shows a vertical section along the line II-II, the guide track 24 of the outer movement path in Fig. 1, 170 and the guide track 25 of the inner movement F i g. 3 is assigned a cross section along the line IH-III 35 transmission path 171. Accordingly, in the in Fig. 2j leg 9 of the other labyrinth passage twice four F i g. 4 shows an excerpt from FIG. 3, but provided in angle rails, the two vertical guides larger Scale, and approximately tracks 26 and 27 form the movement F i g. 5 to 9 are assigned to the sequence of movements of the goods in tracks 171 and 170, respectively. In the same the irradiation system. 40 ways are on the other side of the shielding wall 7 according to FIG. 1 and 2 show the irradiation system in sections 10, 11 and 12 of the two laby lines Irradiation chamber 1, in the middle of which a rinthgang by means of four angled rails four Gamma ray source 2 is arranged. The cam vertical guideways 30, 31, 32 and 33 are formed, mer 1 is of two side walls 3, a rear one of which the guide way 30 of the guide way wall 6, a ceiling 4 and a floor 5 and on 45 25, the guideway 31 of the guideway 26, the the entry and exit side of a shielding guide track 32 of the guide track 24 and the guide wall 7 limited. Ceiling, floor and walls of the movement track 33 is assigned to the guide track 27. Radiation systems consist of absorb radiation - the four belonging to the inner trajectory 171 Concrete. The material to be irradiated will have an irradiation chamber in the guide tracks 25, 26, 30 and 31 1 to the radiation source 2 on two 50 common hoist, which essentially consists of a U-shaped movement paths 170 and 171 around - cable drum 35 and four in the guideways guided, which run parallel to the walls 3 and 6 and befen from movable lifting plates 45, 46, 40 and 41, respectively and of those - from the radiation source 2, which is provided with the cable drum 35 via a cable each - which are a 171 within the movement bonds (Fig. 2). To guide these ropes are track 170 is arranged. For each of the two movement 55 four pulleys 36 and 37 are provided. The four A conveyor system is provided for the conveying tracks, ropes are driven by a motor which can be operated independently of one another and the drum 35 is connected that in a Dreweiter are described in more detail below. hung the drum in one direction every four stroke dies structural measures to step on the slabs at the same time at the same speed Radiation chamber 1 as well as for supply and discharge of the 60 lift and with a rotation in the opposite radiation source 2 as well as the precautions to lower the radiating direction. Basically the same hoist Safe storage of the source 2 are the over- with a cable drum 35 'and four lifting plates 42, 43, For the sake of clarity, 44 and 47 are not shown in the drawing for those of the outer movement path 170 represents. associated guideways 32, 33, 24 and 27 before-to Inward and outward transfer of the goods are seen symmetrically, in which the lifting plates 42, 43, 44 and 47 slide up and down metrically to the longitudinal axis of the irradiation chamber 1. This hoist is parallel to the two labyrinth passages are provided, each of which is arranged and independent of .diedie Has the shape of an upside-down U. sem operable; its four ropes are over deflection

rolls 36 'and 37' out. The cable drums 35 and one of the lowest positions of the lifting plates 42 and 35 'are provided together with the pulleys 36, 36', 37 43 corresponding height, but which are arranged in and 37 'in a space that is indicated by the cross rails in FIG 50 'are covered.
False ceiling 51 of the two labyrinth corridors around the height of each of the four lifting plates

is separated. 5 adjust both hoists relative to each other

The lifting plates 45, 46 and 44, 47 are on their can, a total of four adjustment rollers 70 are pre-underside each with a hanging rail piece 49 or see that with the four ropes that hold the lifting plates 45, 49 ', the radiation chamber parallel to the longitudinal axis of the loading 46 and 44, 47 with the cable drum 35 or 35' 1 is arranged. The lifting plates bind, are in contact and are vertically adjustable 40, 41 and 42, 43 are each arranged with two cross rails 50 io.

and 50 ', which are at right angles to the longitudinal axis on the ceiling 4 of the irradiation chamber 1

run through the irradiation chamber. A trolley 53 is assigned to the lifting plates corresponding to the course of the movement path 171, 40 and 41, and a trolley 53 'is assigned to the lifting plates two hanging rails 74 42 and 43 parallel to the walls 3, which is attached to the hanging rail pieces 49 of their rollers on the cross rails 50 or 50 '15 lifting plates 45 and 46 are in alignment as soon as they rest in a lifting plate. The two cats are in their lowest position. Two hanging rails 53 and 53 'each have a hanging rail piece 55 or 74' are attached above the movement path 170 55 ', which are at the same height and in alignment with the hanging rail pieces 49 and 49 with the hanging rail pieces 49''The associated lifting plates 44 and 47 are aligned in their lowest position lifting plate on the other side of the shielding wall 7 ao. To the good near the rear wall 6 is arranged in parallel. On the intermediate ceiling 51 are to be able to move to this, on the bottom of the horizontal sections 13 and 14 of the two La radiation chamber 1 at right angles to the hanging sliding yrinth passages, a hanging rail 61 and 61 'each pair 74 and 74', a roller conveyor 75 or . 76 brought, which is provided parallel to the longitudinal axis of the irradiation. The hanging rail pairs 74 and 74 'run chamber 1 and of which the two slides 25 end at 72 and 72' (FIG. 2).
nen 61 'are at a different height than the material to be irradiated is according to this embodiment

two rails 61. In the uppermost position of the example packed in cube-shaped containers, Lifting plates 40, 41 assigned to the cable drum 35, three of which are one above the other in a frame Ren upward movement can be found through a stop sleeve 60, which limits rolling at its upper end is, the hanging rail pieces 55 are aligned with the 30 points with which it is on the hanging rails 61, 61 ', these lifting plates with the hanging rails 61, their 74, 74 'and hanging rail pieces 55, 55', 49, 49 ' hand with the hanging rail pieces 49 of the two can go. To transport the goods within the Lifting plates 45 and 46 on the other side of the radiation chamber 1 and in the connected screen wall 7 lines. In the same way, aligned labyrinth passages are used except for the two already operated Hanging rail pieces 55 'of the hoists written for the cable drum 35' 35 sixteen pushing devices, belonging lifting plates 42 and 43 in the uppermost of which eight of the inner movement path 171 and Position, which is determined by the stop 62, associated with eight of the outer movement path 170 the hanging rails 61 ', which in turn are connected to the hanging rails. As the bumpers of these two rail pieces 49 'of the two lifting plates 44 and 47 pen practically do not differ align, which then also follow their uppermost position 40, only those to the inner movement path 171 hold. associated impact devices explained in more detail.

To the trolley 53 'in the uppermost lifting position there is a first pushing device M (Fig. 3)

and in the unloaded state from the guideway from a pneumatic cylinder 100, the thrust 32 to be able to move to the guide track 33 are rod over a crosshead 110 in two bumpers between these guideways near the upper 45 102 and 103 bifurcated through openings 104 At the end of a pair of transfer rails 63 '(FIG. 2) and 105 protrude into two storage cells 106 and 107 provided that they end with the cross rails 50 'of and there in cleat 108,109. To the Lifting plates 42 and 43 in their uppermost position, crosshead 110, a conveyor rod 112 is aligned at the top. The height of the stop 62 is chosen so that it deflects with an arm 113 on a number of bedass the trolley 53 'while traveling, which attacks up to the stopper 120. The containers rest on one cut 10 of the maze-reaching rails plate 125 (Fig. 4), which is fixed by means of rollers 126 61 not affected. arranged rails 127 is slidably mounted.

The trolley 53 is also in its uppermost lifting position. A cam-like projection is provided on the plate 125 from the guide track 30 to the guide 128, which can be moved between two guide tracks 31 on the rails, including stops attached between these guides 129 and 130 protrudes. Rungsbahnen transfer rails 63 (FIG. 3) are provided between the rails 127 and the plate 125, the tension spring 132, which is arranged with the cross rails 50 of the lifting plates, moves the plate 125 with 40 and 41 in their uppermost position and aligns the Containers 120 to the left until the protrusion 128 is in contact with the stop 130, depending on the larger dimension,
impact sleeve 60 at a correspondingly lower level 60. When the pushing device M is actuated, levels than the transfer rails 63 'are located. two in the storage cells 106 and 107,

Corresponding transfer rails 65 are ejected between non-illustrated containers and at the same time the guideways 30 and 31 at the same height in front of the row on the plate 125, the container 120 lent to the lowest position of the lifting plates 40 by the arm 113 in FIG. 3 and 41 corresponds so that the trolley 53 is shifted in this 65 to the right. The plate 125 Position of the lifting plates from the guideway 31 in initially taken by friction until the front die Guide track 30 is movable. Corresponding jump 128 touches the stop 129, after which the Transfer rails 65 'are shifted further to the right for the trolley 53' on the container row alone

until the outermost container on the right is ejected; During this remaining displacement, the arm 113 moves into a slot (not shown) in the plate 125. During the subsequent backward stroke of the pusher M , the plate 125 rolls back under the action of the tension spring 132 until the projection 128 rests against the stop 130, so that a gap is formed between the ejected container and the container adjacent to it. The row is then supplemented in a manner not shown at the left end by a further container with material to be irradiated. The three ejected containers have reached one of the racks already mentioned, with which they pass through the irradiation system in the manner described below.

A second impact device N (FIG. 2) is arranged in the upper region of the guide track 30. It consists of a telescopic cylinder 140, which allows a frame located in the guide track 30 in the uppermost position from the hanging rail piece 55 of the trolley 53 via the fixed hanging rail 61 of the horizontal section 13 into the hanging rail piece 49 'of the lifting plate 45 arranged within the guide track 25 to bump.

A third pushing device O with telescopic cylinder 150 (FIG. 3) is arranged so that idle trolley 53 is now empty from cross rails 50 of the lifting plate

40 over the transfer rails 63 into the cross rails 50 of the lifting plate sliding in the guide track 31

41 can be pushed. A fourth impact device P is provided in the shield wall 7. In its structure it corresponds completely to a pushing device P '(FIG. 1) arranged parallel to it, which faces the outer path of movement

170 heard. The pusher device P ' consists of an axially displaceable pushrod 160 which is fastened with a nose 161 to a chain 163 stretched out over four rollers 162 in a rectangle. The chain 163 is driven by a reversible motor 164, a cam 165 attached to the chain actuating two stop and reversing switches 166 and 167. By means of the bumper 160, the row of frames adjacent to the guideway 24 can be moved on the movement path 170 by a frame width in FIG. 1 can be shifted to the right by starting the motor 164 in a clockwise direction. With the fourth pushing device F, the row of frames adjacent to the guide track 25 can accordingly be on the path of movement

171 can be shifted one frame width to the right.

A fifth, pneumatically acting pushing device Q (FIG. 2) is arranged somewhat below the roller conveyor 75 (FIG. 1) and parallel to the rear wall 6. The push rod 180 of the device Q is provided with a push plate 181 which protrudes between the movement paths 170 and 171. By actuating the push rod 180, the frame located in front of the push plate 181 can be moved, together with a further frame, parallel to the rear wall 6 by a frame width on the roller conveyor 75. The roller conveyor 75 is, as far as it requires the movement of the bumper 180, designed to be divided.

A sixth, pneumatically operated pushing device R (FIG. 2) is attached to the rear wall 6 and its pushing rod 190 extends between two rollers of the roller conveyor 76. At the end of the bumper 190 it carries a bumper 191 which protrudes from below between the two rows of frames parallel to the rear wall 6. The pushing device R allows the rack row adjacent to the guideway 26 to be pushed by a rack width in FIG. 1 to the left, whereby the foremost frame in the direction of movement enters the guideway 26.

The seventh pusher S (FIG. 2) is at the same height as the pusher N, but is attached in the area of the horizontal section 14 and, like this, has a telescopic cylinder. It is used to push out a frame located in the lifting plate 46 and to push it through the horizontal section 14 into the opposite lifting plate 41 of the guide track 31.

The eighth pusher device T (Fig. 3) comprises three parallel telescopic cylinders 205, 206 and 207, the telescopic rods of which are so long that their pusher plates 208, 209 and 210 are able to hold the containers 220, 221 and 222 together with the frame and the trolley 53 from the guide track 31 via the transfer rail 65 into the guide track 30 and then, with further extension of the telescopic rods, the containers 220, 221 from the frame into the storage cells 107 and 106 and the container 222 on the Slide exit ramp 19. The pushing devices M, N, Q, R, S and T correspond essentially to the same design pushing devices M ', N', Q ', R ", S' and T, which move the frames in the area of the guideways 32, 24, in the movement path 170 or in the area of the guideways 27 and 33.

A pivotable stop 230 (FIG. 3) is provided in each of the guideways 30 and 32, which limits the upward stroke of the lifting plate 40 or 42 by pivoting into the relevant path, however, it does not hinder the movement of the lifting plate after it has been swiveled out.

The explanation of the function of the entire conveying device belonging to the inner movement path 171 now happens on the basis of FIG. 5 to 9.

In the starting position (FIG. 5), the lifting plates 40, 41, 45 and 46 belonging to the cable drum 35 are in the lowest position. An empty frame (position A) hangs on the trolley 53 of the lifting plate 40 in the guideway 30 and a full frame (position F) hangs on the lifting plate 46 in the guideway 26. In the storage cell 106 there is a container which has already bypassed the radiation source 2 for the second time, and a container which has first bypassed the radiation source rests in the storage cell 107. In access 18 there is a row of containers to be irradiated. From this state, the cable drum 35 i lifts the lifting plates with the frames around one level of the frame, namely up to the pivoted-in stop 230 (FIG. 6, position B). In this position, the pusher M comes into action, the top tier of the frame being loaded with an unirradiated container, the middle tier with a container that has been irradiated once and the bottom tier with a container that has been irradiated twice.

The lifting mechanism Z then moves the lifting plates to the top position (FIG. 7). Here now (position C) the pushing device N pushes the frame from the trolley 53 onto the hanging rail 61 and further onto the hanging rail piece 49 on the lifting plate 45 in the guide track 25. While the frame is in the loading

209 549/337

Located near the hanging rail 61, the pushing device O pushes the trolley 53 via the transfer rails 63 into the cross rails 50 on the lifting plate 41 in the guide track 31 (FIG. 8). From the in F i g. The position shown in FIG. 8!) Is then brought into position E by lowering the lifting mechanism Z (FIG. 9).

While the described Aufbewegung of the hoist Z was at the same time (F i g. 6) a frame from the position F (Fig. 5) through an intermediate position F 'in the position G (FIG. 7) accommodated.

After the cat 53 has been shifted into the guide track 31, the pushing device S pushes the frame from the position G into the position H (FIGS. 7 and 8). By lowering the lifting plate 41 in the lowermost position then the frame reaches in the guide track 31, the position / (Fig. 9) from which it, as already described above, by means of the pusher T under expulsion of the container in the position .4 (Fi g. 5) is moved.

As mentioned above, at the same time as the position / had been reached, the frame in the guide track 25 had reached position E (FIG. 9), from which the frame is pushed into the irradiation chamber 1 on the movement track 171 with the aid of the pushing device P . This is possible because already at the time of FIG. The positions shown in FIG. 7, the row of racks located parallel to the rear wall 6 was pushed on the movement path 170 with HiMe of the pushing device Q by one rack width. By actuating the pushing device Q in this phase, the two corner positions of the U-shaped movement path 170 are occupied for approximately the same length of time. Simultaneously with the pushing of the pushing device P , the pushing device R pushes the row of racks in front of it one rack width further (Fig. 9), so that a gesture E reaches the lifting plate 46 of the guideway 26 (Fig. 5, position F ).

To make better use of the radiation space, the movements of the pushing devices R and P can be separated in time by first actuating the pushing device R, then the pushing device Q and only then the pushing device P in the lowest position of the lifting plates. In this way it is possible to keep both corner seats occupied practically all the time. However, one more frame is required for each conveyor device.

In the same, but with the described function of those belonging to the inner movement path 171 Independently of the conveying device, the conveying device belonging to the outer movement path 170 becomes operated.

For this purpose 3 sheets of drawings

Claims (1)

Patent claims: 1. Irradiation system with an irradiation chamber, within which the material to be irradiated is guided around a gamma ray source, with at least two movement paths for the material being provided in the irradiation chamber, of which the first - viewed from the radiation source - is arranged within the second movement path, characterized in that a separate conveyor device (P, Q, R or P ', Q', R ') that can be operated independently of the others is provided for each movement path (171, 170). 2. Plant according to claim 1, characterized in that each conveyor device (P, Q, R; P ', Q', R ¹ ) has its own device (35, M, N, S, T; 35 ', M', N ', S', T) is assigned to the inward and outward transfer of the goods. 3. Plant according to claim 1 and 2, with arranged on the inlet and outlet side labyrinth passage with vertical sections on both sides of a vertical shielding wall, characterized in that that every device for inward and outward transfer is one in the area of the labyrinth passage has attached hoist (35, 35 '). 4. Installation according to claim 3, characterized in that each lifting mechanism consists of a cable drum (35, 35 ') and four lifting plates (40, 41, 45, 46; 42, 43, 44, 47) connected to it via a cable each which can be moved up and down in the vertical sections (10, 11, 12, 8, 9) of the labyrinth passage. 5. Plant according to claim 1 or one of the claims following it, characterized in that the goods are stowed in cuboid-like containers (120). 6. Plant according to claim 5, characterized in that the containers (120) are housed in a variable arrangement in racks. 7. Plant according to claim 6, characterized in that each frame has several floors for at least one container (120) . 8. Plant according to claim 6, characterized in that each frame has support rollers, by means of which it is attached to hanging rails (61, 61 ') on the ceiling (51) of the labyrinth passage can be hung and moved. 9. System according to claim 1, 4 and 8, with mounted inside the irradiation chamber Hanging rails on which the racks are at least largely guided, characterized in that, that the lifting plates (45, 46; 44, 47) pieces (49; 47), which are on that of the irradiation chamber (1) facing side of the shielding wall (7) is located from this lifting plate (46; 47) into a lifting plate (41; 43), the side of the shielding wall (7) facing away from the irradiation chamber (1) is located, and is finally pushed back into the first-mentioned lifting plate (40; 42). 11. Plant according to claim 4, characterized in that each lifting mechanism (35, 35 ') has an upper one and a lower end position and an intermediate position for its lifting plates (40, 41, 45, 46; 42, 43, 44, 47). 12. Plant according to claim 10 and 11, characterized in that each of the two on the the irradiation chamber (1) facing away from the side of the shielding wall (7) located lifting plates (40, 41; 42, 43) between these a trolley having a hanging rail piece (55; 55 ') (53; 53 ') is arranged, the correspondingly arranged over one of the upper end position of the lifting plates Transfer rail (63; 63 ') from the lifting plate (40; 42) into the other lifting plate (41; 43) and via a transfer rail corresponding to the lower end position of the lifting plates (65; 65 ') from the last-mentioned lifting plate (41; 43) back to the first-mentioned lifting plate (40; 42) is movable. 13. Plant according to claim 4, characterized in that the on the irradiation chamber (1) facing away from the shielding wall (7) lifting plates (40, 41; 42, 43) are provided with cross rails (50; 50 ') on which the rollers of the trolley (53; 53') run. 14. Installation according to claim 1 or one of the following, characterized in that a device (M, M ', T, I ") is provided for each lifting mechanism (35, 35') outside the shielding wall (7), through which in each case a container (120) with unirradiated material is supplied and a container (222) with finished irradiated material is removed.