RU2548018C1 - Extraction from target components produced by irradiation from flat mould and device to this end - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: target composed of sealed shell of flat separator is, first, subjected to crosswise cutting by cutting off the target end parts and, then, target is unsealed on both long sides and of both surfaces. Note here that separator withdrawn from unsealed target is knocked down to remove irradiated target component therefrom. Claimed device comprises target unsealing device, motor (6) and reduction gearbox (7) with central working shaft (6) driving cutting rolls on one side and, on opposite side, via linkage with moving slide, reciprocating the guillotine-shears. Target is, first, placed in withdrawing device and clamped by cam gripper. Then, guillotine-shears (10) are used for crosswise cutting of said target. Now, target is placed on withdrawing table (14) and pushed between two cutting-off rolls for trimming of target shell.

EFFECT: remote unsealing of target in radiation-protective hot chambers.

5 cl, 4 dwg

Description

The invention relates to the field of atomic engineering and is intended for the extraction of the target components resulting from irradiation from a target.

The Known Method of extracting molybdenum-99 from a matrix containing fission neutron radiation material and fission products (see US patent No. 4094953, class G21G4 / 00, publ. 06/13/1978), comprising dissolving the irradiated material in solutions of mineral acids and alkalis or in molten salts in apparatus-solvents;

A known Method of reducing molybdenum-99 from an irradiated target of a uranium alloy (see US patent No. 4701308, class G21G4 / 00, publ. 10/20/1978), comprising dissolving the irradiated target of a uranium alloy in sulfuric acid.

The disadvantages of the known methods of extracting valuable components is the dissolution of exposed material in apparatus-solvents. These methods require the development of special equipment that allows the cutting of targets remotely without the release of volatile compounds (Xe, Kr, J2, etc.) into the atmosphere of the protective chamber. In addition, the irradiated material after depressurization of the shell is loaded into a special solvent apparatus. The loading of irradiated material into a solvent reactor also requires special equipment that would prevent contact of the irradiated material with the atmosphere of the protective chamber.

Closest to the proposed invention is a method of extracting the target components obtained by irradiation and a device for its implementation (see RF patent No. 2267180, class G21G4 / 00, publ. 12/27/2005), comprising a target equipped with fittings at both ends with membranes, hermetically connected directly to the flow line of the technological scheme. Then, using the pusher fittings, the membranes are destroyed, thereby combining the internal cavities of the shell and the technological scheme. Liquid or gaseous reagents are passed through the target membrane to extract the target components. Then the shell with the products left in it is disconnected from the production line and closed at both ends with sealed threaded plugs for temporary or permanent storage.

A device for extracting the target components obtained as a result of irradiation consists of a shell with irradiated material, contains pusher fittings sealed on it at both ends, made in the form of cylindrical tubes with blind membranes inside, thread on the outer surface and grooves on the end surfaces for placement they have elastic pads.

The reasons that impede the achievement of the following technical result when using the known invention include the fact that the method and device do not provide the extraction of the target components from the target in its original form (in the form of disks) without destroying them.

The essence of the proposed method for extracting from the target a flat shape obtained by irradiation of the target components is that the target, made in the form of a sealed in the shell of a flat separator in which the irradiated target components are located in the form of disks, is first subjected to transverse cutting, cutting off the end parts of the target, and then make a bilateral opening of the target on both its long sides.

The separator extracted from the opened target is disassembled to remove the irradiated target component from it.

The device for extracting the target components obtained as a result of irradiation from the target is equipped with an electric motor and gearbox with a central working shaft, which, on the one hand, drives the cutting rollers into rotation, and, on the other hand, the guillotine shears in the reciprocating movement through the rocker mechanism.

The target to be opened is first installed in the extraction device fixture, secured there with a fist clamp, and then guillotine shears located perpendicular to the target make a transverse cut of the target, cutting off first one and then the second end of the target.

After cutting off the end parts of the target, it is mounted on the table of the extraction device, and then the target is pushed between two cutting rollers and the target shell is cut.

The use of the invention provides the following technical result:

- the use of the method and device for opening the target remotely in radiation protective "hot" cameras with the aim of further use of the irradiated target components.

The specified technical result in the implementation of the invention is achieved by the fact that the proposed method includes removing the target components from the target.

The peculiarity lies in the fact that the target, made in the form of a flat-sealed separator in the shell, in which the irradiated target components are located in the form of disks, is first subjected to transverse cutting, cutting off the final parts of the target, and then two-sided opening of the target on both its long sides.

The separator extracted from the opened target is disassembled to remove the irradiated target component from it.

The device for extracting from the target a flat shape obtained by irradiation of the target components includes a device for opening the target.

The peculiarity lies in the fact that the extraction device is equipped with an electric motor and gearbox with a central working shaft, which, on the one hand, drives the cutting rollers into rotation, and, on the other hand, the guillotine shears in reciprocating motion through the rocker mechanism.

The target to be opened is first installed in the extractor device fixture, secured there with a cam clamp, and then guillotine shears located perpendicular to the target make a transverse cut of the target, cutting off one and then the second end of the target.

After cutting off the end parts of the target, it is mounted on the table of the extraction device, and then the target is pushed between two cutting rollers and the target shell is cut.

The analysis of the prior art by the applicant, including a search by patents and scientific and technical sources of information and identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention. Therefore, the claimed invention meets the condition of "novelty."

The construction of the invention is presented in the drawings.

Figure 1 - appearance of a flat target.

Figure 2 - section aa cross section of the target.

Figure 3 is a view of the extraction device from the side of the guillotine shears.

Figure 4 is a view of the extraction device from the side of the cutting rollers.

The target consists of shanks 1 and 2, separator 3, shell 4, the irradiated target component 5.

The extraction device consists of an electric motor 6, a gearbox 7, a central working shaft 8, on the one hand equipped with a rocker mechanism 9 and guillotine shears 10, on the other hand, with cutting rollers 11, a device 12, a cam clamp 13, a table 14.

The device operates as follows. The device is installed in a radiation-protective "hot" chamber and, using the manipulator, remotely extract the irradiated target components from the target. The target is installed in the device 12, fixed with a cam clip 13, and using the guillotine shears 10 driven by the rocker mechanism 9, a segment is cut first of one end 1 of the target, and then of the second 2. After that, the target is mounted on table 14 and pushing it under rollers 11, open the shell 4 along the long sides of the target. The rotation of the rollers 11 and the rocker mechanism 9 is carried out from the electric motor 6 through the gearbox 7 and the central working shaft 8. From the separator 3 released from the target, the irradiated target components 5 are removed for further use.

Thus, the foregoing description indicates the fulfillment of the following set of conditions when using the claimed invention:

- a tool embodying the claimed invention, in its implementation is intended to extract the target components obtained as a result of irradiation from the target and can be used to open the target remotely in radiation protective "hot" chambers;

- for the claimed method and device in the form as they are described in the stated claims, the possibility of their implementation using the means and methods described in the application is confirmed;

- a tool embodying the claimed invention in the implementation, is able to achieve the perceived by the applicant set technical tasks (using the method and device for opening the target remotely in radiation-protective "hot" cameras).

Therefore, the claimed invention meets the condition of "industrial applicability".

Claims (5)

1. The method of extracting from the target a flat shape obtained by irradiation of the target components, comprising removing the target components from the target, characterized in that the target, made in the form of a sealed in the shell of a flat separator in which the irradiated target components in the form of disks, is first subjected to transverse cutting, cutting off the final parts of the target, and then make a bilateral opening of the target on both its long sides. 2. The method according to p. 1, characterized in that the separator extracted from the opened target is disassembled to remove the irradiated target component from it. 3. A device for extracting from a target a flat shape obtained by irradiation of target components, including a device for opening the target, characterized in that the device is equipped with an electric motor and gearbox with a central working shaft, on the one hand driving the cutting rollers into rotation, and on the other hand through the rocker mechanism - in the reciprocating movement of the guillotine shears. 4. The extraction device according to claim 3, characterized in that the target, made in the form of a flat-sealed separator in the shell, in which the irradiated target components are located in the form of disks, is first installed in the device of the extraction device, fixed there with a cam clamp, and then with guillotine shears located perpendicular to the target, make a transverse cut of the target, cutting off first one, and then the second end of the target. 5. The extraction device according to claim 3, characterized in that after cutting off the end parts of the target, it is mounted on the table of the extraction device, and then the target is pushed between two cutting rollers and the target shell is cut.

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