KR19980028151A - Disc-type radiation source measurement sorting station full automatic device - Google Patents

Abstract

The present invention reduces work time and efficiency by automating the process of cutting the irradiation container with a built-in disk-type radiation source after neutron irradiation, measuring the radioactivity of the disk, classifying the disk according to the measured value, and then loading it in the set source cap. It is to improve mass production by minimizing the radiation exposure of workers, and to cut and fix the irradiation container with a built-in disk after neutron irradiation in the reactor, and the target support in the cut irradiation container. And a target transfer device for transferring the disc in the target support in the front, rear, left, right, up and down directions, a radioactivity measuring device for measuring the radioactivity of the disc during the disc transfer process, and a target position recognition device for marking the disc position in the target support. Disc type radiation source measurement and sorting automatic device.

Description

Disc-type radiation source measurement and sorting automatic device

The present invention relates to an apparatus for automating the measurement, classification, and loading of a disk-type radiation source, and more particularly, to cut an irradiation vessel in which a disk-type radiation source after neutron irradiation has been cut and take out the target support of the irradiation vessel. Disk-type radiation source measurement that measures target radioactivity and classifies it according to the measured value and automates the loading process in source cap surgery, minimizing the radiation exposure of workers as well as mass production by shortening working time and improving work efficiency. A sorting loading automation device.

In general, it is understood that radioisotopes are used through many studies and experiments in various fields, such as industrial fields such as medical differentiation and nondestructive testing, and agricultural fields, which perform diagnosis and treatment using radiopharmaceuticals.

Disc-type radiation sources (hereinafter referred to as discs) have been developed for nondestructive testing, which has increased rapidly as the industry develops.

Then, the production process of the conventional disk is briefly described as follows.

As shown in Figs. 1 and 2, the isotopically processed disk 100, i.e., a non-radioactive disk 100, is inserted into a target support 102 having 20 target grooves 102a. After the disk 100 is inserted into the target support 102 into the irradiation vessel 101 and sealed, the neutron irradiation is put into the irradiation hole of the neutron irradiation equipment, that is, the reactor. The disk 100 is embedded in the irradiation container 101 is for safety and convenience of handling. In addition, although the shape of the irradiation container 101 varies slightly depending on the irradiation method of the reactor, the shape of the irradiation container 101 in which the carrying protrusion 101a protrudes upward is adopted here so that handling may be easy on the upper end.

The disk 100 irradiated in the reactor is transported into a hot cell while being placed in the irradiation container 101. The irradiated container 101 transported into the hot cell is fixed to the chuck of the shelf by a worker outside the hot cell by using a robot arm connected between the inside and the outside of the hot cell, and then the sealed irradiated container 101 using a cutter. Cut) At this time, the disk 100 taken out from the irradiation container 101 is measured in the radioactivity by the operation of the robot arm, and then adjusted to the amount of radiation according to the use environment of the application field is embedded in the source capsule.

In the disc production process up to now, the work performed by hot cell cooling, such as cutting the irradiation vessel, adsorption movement of the disc, measuring the radiation of the disc, and loading the disc to the source capsule, is performed manually by using a robot arm. Due to the small size, the working time is long to meet the required precision of work, which reduces work efficiency. Therefore, the mass production cannot be performed, and there is a relatively high possibility of the worker being exposed to radiation due to manual work.

Accordingly, as the industry developed, the requirement of non-destructive inspection radio disc source increased rapidly, while the mass production was not possible in the production of the disc, and thus the supply amount was very low to satisfy the requirement.

The present invention has been made in view of the above problems, the radioactive measurement of the disk in the irradiation vessel after neutron irradiation, according to the classification, according to the automation of the process of loading the classified disk in the source caps shortening work time and work efficiency The purpose is to provide a disk-type radiation source instrumentation and sorting automation device that can minimize mass exposure as well as minimize radiation exposure of workers.

The present invention for achieving the above object, the irradiation vessel cutting device for fixing and cutting the irradiation vessel with a built-in disk after the neutron irradiation in the reactor, the target support in the cut irradiation container and the disk in the target support back and forth left and right Disc type radiation source loading and loading automation device consisting of a target feeder for feeding in the vertical direction, a radiation measuring device for measuring the radioactivity of the disk during the disk transfer, and a target position recognition device for marking the position of the disc in the target support. To provide.

In addition, in the embodiment of the present invention, the target and the disc transfer device are provided with a plurality of linear motors comprising a linear guide and a movable shaft coupled to slide in a linear direction in the linear guide to generate an electronic drive propulsion force.

1 is a cross-sectional view showing an example of the structure of the irradiation vessel incorporating a general disc and the target support

Figure 2 is a perspective view showing an example of the structure of the target support is built in a general disk

3 is a perspective view showing a disk-type radiation source measurement and classification automatic loading device according to an embodiment of the present invention

Figure 4 is a cross-sectional view showing the irradiation vessel cutting device of the disk-type radiation source measurement and sorting automatic device of the present invention

5 is an operation state diagram according to an embodiment of the present invention, a state in which the finger drop to the discard hole in the state holding the cut portion of the irradiation vessel.

6 is an operational state diagram according to an embodiment of the present invention, a state diagram in which the first vacuum pad is absorbed by the target support of the irradiation vessel to move;

7 is a state diagram in accordance with an embodiment of the present invention, the first vacuum pad is a state diagram for transporting the target support of the irradiation vessel to the target support base.

8 is an operational state diagram according to an embodiment of the present invention, the second vacuum pad is a state diagram for sucking the disk of the target support placed on the target support base;

9 is an operational state diagram according to an embodiment of the present invention, the second vacuum pad adsorbed the disk is transported to the upper portion of the source capsule to load the disk

10 is a state diagram in accordance with an embodiment of the present invention, a state in which the disk is no longer remaining to transport the target support to the dropping hole

Explanation of symbols on the main parts of the drawings

1: table panel 3: auxiliary panel

5: light 6: camera

7: target support base 8: disposal hole

9: source capsule alignment plate 9a: source capsule

10 pneumatic cylinder 11 piston

12: cutter carrier 13: carrier guide

14: rotary cutter 15: pneumatic chuck

20: drive motor 30: X axis linear unit

31,36,41,46,51,56: Linear guides 32,33,37,38,42,47,52,57: Moving shaft

35: first Y-axis linear unit 40: second Y-axis linear unit

45: first Z-axis linear slide unit 49: finger

50: second Z-axis linear slide unit 53: first vacuum pad

55: third Z-axis linear slide unit 58: second vacuum pad

60 ion ionizer

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 3, the disk-type radiation source measurement and sorting automatic loading device according to the present invention includes a frame unit installed so that the devices at the rear end can be fixed and held, and a disk 100 having neutron irradiation completed in the reactor. Irradiation vessel cutting device for fixing and cutting the container 101, the target for transporting while moving the target support 102 in the cut irradiation vessel 101 and the disk 100 in the target support 102 in the front, rear, left and right directions Consists of a transport device, a radioactivity measuring device for measuring the radioactivity of the disk 100 during the disk 100 transfer process, and a target position recognition device for marking the position of the disk 100 in the target support (102).

On the other hand, the frame unit is a table panel (1) and a plurality of legs (2) fixed to the outside of the lower surface of the table panel (1) and the height adjustment bolt (4) and the table installed on the lower surface of each leg (2) It consists of an auxiliary panel (3) installed on one side of the panel (1). A target support base 7 is installed at the front center of the table panel 1, and a rear end 8 of the target support base 7 is formed so that the target support 102 is discarded. The lower part of the said waste hole 8 is equipped with a magazine container.

In addition, the irradiation vessel cutting device is, as shown in Figure 4, the pneumatic cylinder 10 installed on one side of the table panel 1 and the piston 11 and one side end reciprocating in the cylinder 10 is The cutter cutter 12 fixed to the piston 11 and the rotary cutter 14 and the cutter carrier 12 rotatably installed on the cutter carrier 12 of the other end to which the piston 11 is fixed. It consists of a pneumatic chuck 15 for fixing the conveying guide 13 and the irradiation vessel 101 to guide the vacuum pressure and the drive motor 20 for rotating the pneumatic chuck (15).

The pneumatic chuck 15 is composed of a pneumatic holder shaft 16 into which the irradiation container 101 is held, an adapter 17 (adaZter) fitted to an outer circumferential surface thereof, and a housing 18 surrounding the outer shell of the adapter 17. The pneumatic chuck 15 is mounted to the lower surface of the table panel 1 by a socket 23.

The drive motor 20 transmits rotational power to the pneumatic chuck 15 through a timing belt 22 connecting the pulley 21 installed on the drive shaft 20a and the pulley 19 installed on the pneumatic chuck 15. do.

The target transport apparatus includes an X-axis slide unit 30, first and second Y-axis slide units 35 and 40 that move in the front and rear and transverse directions relative to the X-axis slide unit 30. A first Z-axis slide unit 45 for fixing and transporting the irradiation container 101 while moving in the vertical direction with respect to the first Y-axis slide unit 35, and a first Y-axis slide unit ( 2nd Z axis which transfers the target support 102 in the irradiation container 101 cut by the pneumatic chuck 15 while moving vertically and vertically based on 35) to the target support base 7 or the waste hole 8). A second slide for moving the disk 100 of the target support 102 placed on the target support base 7 while moving in the vertical direction with respect to the linear slide unit 50 and the second Y-axis linear slide unit 40; Z-axis linear slide unit (50).

The X-axis linear slide unit 30 is coupled to the linear guide 31 installed in the left and right transverse direction on the rear end of the table panel 1 so as to slide in the left and right transverse direction to the electromagnetic guide driving force. It is provided with a linear motor consisting of two movable shafts (32, 33) is generated.

The first Y-axis slide unit 35 has a linear guide 36 fixed to the left and right movable shafts 32 of the X-axis slide unit 30 in the front-rear and horizontal directions, and the front-rear and horizontal-directions of the linear guide 36. It is coupled to slide in the direction is provided with a linear motor consisting of two movable shafts (37, 38) for generating an electromagnetic drive propulsion force.

The second Y-axis slide unit 40 has a linear guide 41 fixedly installed in the front-rear and horizontal directions on the right side movable shaft 33 of the X-axis slide unit 30, and is moved forward and backward on the linear guide 41. It is coupled to slide in the direction is provided with a linear motor consisting of a movable shaft 42 for generating an electromagnetic drive propulsion force.

The first Z-axis slide unit 45 is connected to the linear guide 46 and the linear guide 46 fixedly installed in the longitudinal direction on the front movable shaft 37 of the first Y-axis slide unit 35. It is provided with a linear motor composed of a movable shaft 47 coupled to slide in the direction to generate an electromagnetic drive propulsion force, the movable shaft 47 is provided with a drive cylinder 48 that is operated by pneumatic, the drive cylinder 48 At the lower end of the) is provided with a finger 49 to be able to catch the projection (101a) by its operation.

The second Z-axis slide unit 50 is longitudinally fixed to the linear guide 51 fixed to the rear movable shaft 38 of the first Y-axis slide unit 35 in the longitudinal direction and the linear guide 51. A linear motor is configured to include a movable shaft 52 coupled to slide in a direction to generate an electromagnetic drive propulsion force, the movable shaft 52 has a first vacuum pad that can vacuum suction and transport the target support 102 ( 53).

The third Z-axis linear slide unit 55 is a linear guide 56 fixed to the movable shaft 42 of the second Y-axis linear slide unit 40 in the longitudinal direction and the linear guide 56 in the longitudinal direction. A second vacuum pad having a linear motor that is coupled to slide to generate an electromagnetic drive propulsion force, the linear motor is fixed to the movable shaft (57) for vacuum suction transfer of the target support (102) 58 is provided.

In the linear motor, movable magnets are disposed on both sides of the rails of the linear guides 31, 36, 41, 46, and 51, and movable shafts 32, 33, 37 are opposed to the movable magnets. (38) (42) (47) (52) 57 has a structure in which plate-shaped coil elements are attached to both sides of the substrate, but not shown. Accordingly, by sequentially changing the SN direction of the coil element of each of the movable shafts 32, 33, 37, 38, 42, 47, 52, 57, the movable shafts 32, 33 ( 37, 38, 42, 47, 52 and 57 are driven in the longitudinal direction of the linear guides 31, 36, 41, 46 and 51.

On the other hand, the radioactivity measuring device is composed of an ion ionization box 60 penetrated downward on one side of the table panel (1).

The ion ionizer 60 is used to measure the radioactivity of the disk 100 sheet, and uses the correlation between the intensity of radioactivity and the amount of current flowing by ionization of the gas charged in the ionizer.

The disk 100 is introduced to a predetermined position of the ion ionization container 60 by the second vacuum pad 58, and a time of 20-30 seconds is required to obtain the equilibrium value.

In addition, the target position recognition device is provided with a lamp 5 for illuminating the target support 102 mounted on the target support base (7) is provided on one side of the auxiliary panel 3, the one side of the target support 102 The camera 6 which marks the position of each disk 100 is provided. That is, each of the positions of the disk 100 embedded in the target support 102 can be image processed (image Zrocessing).

The above devices are installed in the hot cell, and a controller (computer) for pneumatic, electrical and electronic control of the devices is installed outside the hot cell, which automatically controls the whole work process and records and analyzes the measurement of the disk 100 radioactivity. . In addition, it is possible to perform each work process manually through the controller.

Then, the source capsule 9a in which the disk 100 in the state of completion of radioactivity measurement by the target transfer device is loaded is arranged at a predetermined interval on the source capsule alignment plate 9 placed on the table panel 1.

In the drawings, reference numeral 31a denotes a boot for preventing foreign matters from entering into the linear guide of the X-axis slide unit 30, and 39 and 43 denote first and second Y-axis slide units 35. The first, second and third Z-axis linear slide units 45, 50 and 55 are line guides for safely protecting electric cables and pneumatic pipes during flow, and 70 is an air compressor.

Referring to the operation of the present invention configured as described above is as follows.

Prior to the operation of the present invention, the disk 100 prepared before the neutron irradiation is put in the irradiation vessel 101 to be sealed through the target support 102 to irradiate the neutron for a predetermined time in the reactor, then the disk 100 is embedded In the state of shielding the irradiated container 101 is transported into the hot cell and waiting.

First, the irradiation vessel 101 is transported into the hot cell by operating the robot arm and the irradiation vessel 101 is put into the pneumatic chuck 15 of the irradiation vessel cutting device and fixed by pneumatic pressure. At this time, the finger 49 installed in the first Z-axis linear slide unit 45 descends by the operation of the linear motor and moves the transport protrusion 101a of the irradiation vessel 101 by the pneumatic pressure supplied to the driving cylinder 48. Caught.

The driving motor 20 is driven while the irradiation vessel 101 is fixed to the pneumatic chuck 15 and the finger 49. Accordingly, the rotational power of the driving motor 20 is controlled by the timing belt 22 and the pulley. It is transmitted to the pneumatic chuck (15) through the (19) (21) to be rotated synchronously with the fixed irradiation vessel (101). At this time, the pneumatic cylinder is injected into the pneumatic cylinder 10 to advance the piston 11 and the cutter feed body 12 installed thereto to the irradiation chamber 101 is rotated. The cutter conveying body 12 slides on the conveying body guide 13 and cuts the rotating cutter 14 in contact with the irradiation container 101.

After confirming that the irradiation vessel 101 has been cut in the process of cutting the irradiation vessel 101, when the cutting is completed, the rotation cutter 14 is returned to its original position, and as shown in FIG. 5, the first Z-axis slide unit 45 is provided. After raising the finger 49 in the state of holding the cut portion of the irradiation vessel 101 by using the linear motor of the table panel (1) through the X-axis linear unit 30 and the first Y-axis linear unit 35 ), The cut portion of the irradiation container 101 is blown out into the waste hole 8.

After the cutout portion of the irradiation vessel 101 is discarded, the finger 49 is returned to its original position through the X-axis slide unit 30 and the first Y-axis slide unit 35.

When the finger 49 is in the original position, the first vacuum pad 53 is cut through the linear motor of the X-axis slide unit 30 and the first Y-axis slide unit 35. 101, located in the upper portion, as shown in FIG. 6, through the linear motor of the second Z-linear slide unit 50 descends to the upper surface of the target support 102 in the irradiation vessel 101, the target support 102 Is adsorbed by vacuum, and then raises the first vacuum pad 53 in the state where the target support 102 is adsorbed, and moves to the target support base 7 as shown in FIG. It rests on the base (7). On the other hand, the lamp 5 installed in the auxiliary panel 3 is kept on when the device starts to operate, illuminates the target support base 7, and each disk of the target support 102 through the camera 6. 100) location is determined.

In the state where the disk 100 of the target support 102 is determined, the first vacuum pad 53 releases vacuum suction, and then the second Z-axis slide unit 50 and the first Y-axis slide unit ( 35) and return to the original position via the X-axis slide unit 30.

When the first vacuum pad 53 returns to its original position, the second vacuum pad 58 is the X-axis slide unit 30, the third Z-axis slide unit 55, and the second Y-axis slide unit 40. As shown in Figure 8 through the linear motor of the), it moves to the upper portion of the target support base (7), and then the adsorption of the positioned disk 100 of the target support (102) by vacuum is raised.

The second vacuum pad 58 having the adsorption-lifted disk 100 moves to the upper portion of the ion ionizer 60 and then transferred to the lower portion of the ion ionizer 60 by using a linear motor of the third Z-axis linear slide unit 55. . At this time, the ion ionization box 60 measures the radioactivity of the disk 100. At this time, the controller stores the measured radiation value of the disk 100.

After measuring the radiation of the disk 100, the second vacuum pad 58 is raised through the linear motor of the third Z-axis slide unit 55, and again the X-axis slide unit 30 and the second Y As shown in FIG. 9 through the linear motor of the axial slide unit 40, the disk (9a) of the set source capsule 9a of the source capsule alignment plate 9, that is, the source capsule 9a of which the amount of tool radioactivity is determined, 100) is lowered and lowered into the source capsule (9a).

The second vacuum pad 58, which is slowly lowered into the source capsule 9a, releases the vacuum and then rises again through the linear motor of the third Z-axis linear slide unit 55. At this time, the disk 100 transferred from the second vacuum pad 58 is stacked in the source capsule (9a). The disk 100 stacked on the source capsule 9a should be stacked horizontally so as not to stand vertically.

As such, the second vacuum pad 58 having finished loading the disk 100 into the set source capsule 9a is again placed at the initial position, that is, the target support placed on the target support base 7 as shown in FIG. 6. The disk 100 of 102 moves to the upper part and repeats.

On the other hand, when the disk 100 is loaded while the disk 100 is not sucked due to the malfunction of the second vacuum pad 58, the operation is continued without stopping the operation, for example, the target support ( When the number of discs 100 embedded in the 102 is 20, the second vacuum pad 58 repeats the loading of the disc 100 as described above 20 times, and then the target support 102 in the camera 6. Check whether the disk 100 remains, and if the disk 100 remains, it is regarded as a malfunction of the second vacuum pad 58, and the disk 100 is loaded again. When 100 is not remaining, as shown in FIG. 10, the first vacuum pad 53 is operated to take out the target support 102 to the waste hole 8. At this time, the target support 102 discarded from the first vacuum pad 53 is stacked in the magazine-type container through the waste hole (8).

When the disk 100 is loaded with the predetermined amount of radiation in the source capsule 9a by the progress of this operation, the work in the disk-type radiation source measuring and sorting automation device of the present invention is completed, and the disk 100 is completed. The fully loaded source capsule 9a is transferred to the next working process to cover the source capsule cap, and then welded the cap to complete a series of disk-type radiation source for non-destructive inspection.

Therefore, the present invention is the process of cutting the irradiation vessel with a built-in disk after irradiation, measuring the radioactivity of the disk, classifying according to the measured value and then loaded into the set source capsule by automating, reducing work time and improving work efficiency Mass production is possible and it can meet the requirements of the disk-type radiation source which is increasing with industrial development.

In addition, as part of the production process of the disc is automated, the radiation exposure of the operator can be minimized.

Claims (4)

Irradiation vessel cutting device for rotating and cutting the irradiation vessel 101 with the built-in disk 100 after the neutral irradiation in the reactor by pneumatic, and installed on one side of the table panel (1) of the frame unit to drive the driving force in the horizontal direction An X-axis linear slide unit 30 having a linear motor to be generated, the first motor having a linear motor is installed to be interlocked on one side of the linear motor of the X-axis linear slide unit 30 to generate a drive propulsion force in the front and rear and lateral directions A second Y-axis slide unit (40) having a linear motor which is installed to be coupled to the Y-axis slide unit 35 and the other side of the linear motor of the X-axis slide unit 30 and generates driving propulsion force in the front and rear and horizontal directions (40). ), The linear motor is installed to be linked to the other side of the linear motor of the first Y-axis linear slide unit 35 to generate a drive propulsion force in the vertical direction, and installed to interlock with the linear motor. A first Z-axis slide unit 45 having a drive cylinder and a finger 49 operated by the drive cylinder 48, and interlocked with the other linear motor of the first Y-axis slide unit 35. A second Z-axis slide unit 50 and a second Y-axis slide unit 50 having a linear motor which generates drive propulsion force in the vertical direction up and down, and a first vacuum pad 53 interlocked with the linear motor. A third Z-axis linear slide unit 55 having a linear motor installed in cooperation with the other side of the linear motor and generating a driving thrust force in the vertical direction in the vertical direction, and a second vacuum pad 58 installed in association with the linear motor. Target transport device consisting of, radioactivity measuring device consisting of an ion ionizing box 60 penetrated downward on one side of the table panel 1, each disk 100 of the target support 102 transferred to the target support base (7) ) Marked position Camera (6) the disc-shaped measuring radiation source classification automated loading device, characterized in that a target consisting of a location-aware device comprising. According to claim 1, wherein the irradiation vessel cutting device is a pneumatic cylinder (10) installed on one side of the table panel (1), a piston 11 reciprocating in the cylinder (10), one end is the piston (11) A feeder for guiding the cutter feeder 12 fixed to the rotary cutter 14, a rotary cutter 14 rotatably installed on the cutter feeder 12 at the other end to which the piston 11 is fixed. Disc type radiation source measurement and sorting automation device, characterized in that consisting of a sieve guide 13, a pneumatic chuck 15 for fixing the irradiation vessel 100 in a vacuum, and a drive motor 20 for rotating the pneumatic chuck 15 . The linear motor of claim 1 or 2, wherein the linear motor of the target transfer device is a linear guide (31) (36) (41) (46) (51) and the linear guide (31) (36) (41) (46). Coupled to slide in a linear direction in the (51) is characterized by consisting of the movable shaft (32) (33) (37) (38) (42) (47) (52) (57) generated by the driving force Disc-type radiation source measurement and sorting automation device. The disk-type radiation source measurement according to claim 1 or 2, wherein the camera 6 and the lamp 5 are installed to recognize and determine the position of the disk 100 in the target support 102 as an image. Classification loading automation device.