CN110833982B - Temperature-control rapid clamping refrigeration rotary table for mounting high-temperature radioactive source - Google Patents
Temperature-control rapid clamping refrigeration rotary table for mounting high-temperature radioactive source Download PDFInfo
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- CN110833982B CN110833982B CN201911093703.2A CN201911093703A CN110833982B CN 110833982 B CN110833982 B CN 110833982B CN 201911093703 A CN201911093703 A CN 201911093703A CN 110833982 B CN110833982 B CN 110833982B
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- radioactive source
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0426—Cooling with air
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Abstract
The invention relates to a temperature-control rapid clamping refrigeration rotary table for mounting a high-temperature radioactive source, which comprises a rotary table part and a clamp part with a refrigeration structure, wherein the rotary table part comprises a base and a clamping part; the clamp assembly is capable of clamping a high temperature radioactive source enclosure assembly mounted on the turret assembly for cooling thereof and capable of being rotated by the turret assembly. The invention has the following beneficial effects: according to the invention, the mode of arranging the refrigeration structure on the clamp is adopted, the cladding structure of the high-temperature radioactive source is cooled, and the ceramic adhesive can be ensured to be in a flowing state during packaging, so that the end cover can be ensured to be installed in place.
Description
Technical Field
The invention belongs to the field of nuclear industry, and particularly relates to a temperature-control rapid clamping refrigeration rotary table for mounting a high-temperature radioactive source.
Background
The high temperature radioactive source finally needs to be encapsulated in a carbon cylindrical can. Because the radiation dose rate of the radioactive source is large, the whole process is mechanized operation in order to reduce the dose received by operators. As shown in fig. 1, firstly, a high-temperature radioactive source is installed in an inner hole of a carbon-carbon cladding cylinder C, then the carbon-carbon cladding cylinder rotates, and a carbon-carbon threaded end cover D moves downwards and is relatively screwed into the carbon-carbon cylindrical cladding cylinder. In order to prevent the end cover from loosening, inorganic ceramic glue is required to be coated in the end cover threads in advance, and after the end cover is screwed into the cylinder body, the ceramic glue is solidified by heating the ceramic glue by using the heat of a radioactive source so as to achieve the effect of loosening prevention of the threads.
As the thermal power of the radioactive source is high, the temperature is very high, and the surface temperature can reach more than 500 ℃. After the radiation is installed on the carbon-carbon cladding cylinder, the carbon-carbon cladding cylinder is heated, and the heat of the high-temperature radioactive source is quickly transferred to the outer surface of the carbon-carbon cladding cylinder due to the high thermal conductivity of the carbon-carbon cladding cylinder. When the thread surface of the carbon thread end cover is contacted with the thread surface of the inner hole of the carbon cladding cylinder, heat is quickly transferred to the carbon thread end cover, so that the temperature of the thread end cover is sharply increased, and can reach more than 50 ℃ within ten seconds. And the inorganic ceramic glue is cured quickly at the temperature of more than 50 ℃, which can cause that the threaded end cover cannot be screwed into the carbon-carbon cladding cylinder continuously, thus causing the packaging failure. And the solidified ceramic cement is difficult to remove from the threads, which can cause the carbon-carbon cladding cylinder and the threaded end cover to be incapable of being reused. And because the cylindrical surface of the high-temperature radioactive source and the cylindrical surface of the inner hole of the carbon-carbon cladding cylinder are arranged in an interference fit manner, the high-temperature radioactive source and the cylindrical surface have great friction force. Without destroying the carbon-carbon cladding cylinder. The high-temperature radioactive source cannot be taken out and installed again. However, the high-temperature radioactive source is internally sealed with extremely toxic radioactive substances, and the carbon-carbon cladding cylinder body is broken and disassembled with great risk. And high temperature also brings certain difficulty to forcible entry. Therefore, the encapsulation of high temperature radioactive sources requires one success. At present, the technical scheme capable of effectively solving the high-temperature problem is lacked in the prior art.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the high-temperature radioactive source remote installation device which can realize remote installation of the high-temperature radioactive source and avoid the packaging failure caused by the fact that the threaded end cover cannot be installed in place due to premature curing of ceramic cement.
The technical scheme of the invention is as follows:
a temperature control rapid clamping refrigeration rotary table for mounting a high-temperature radioactive source comprises a rotary table part and a clamp part with a refrigeration structure; the clamp assembly is capable of clamping a high temperature radioactive source enclosure assembly mounted on the turret assembly for cooling thereof and capable of being rotated by the turret assembly.
Furthermore, the temperature-control rapid clamping refrigeration rotary table for installing the high-temperature radioactive source comprises a left clamp, a right clamp and a fixing structure, wherein the left clamp is arranged on the left side of the rotary table; the left clamp and the right clamp can be spliced to form a clamping opening for clamping the radioactive source enclosure assembly and can be fixedly connected through a fixing structure; and the left clamp and the right clamp are respectively connected with a refrigeration structure to realize cooling of the radioactive source cladding assembly.
Furthermore, the temperature-control rapid clamping refrigeration rotary table for mounting the high-temperature radioactive source comprises a semiconductor refrigeration device, a heat dissipation fin and a fan; the semiconductor refrigeration device is arranged close to the left clamp/the right clamp; the heat dissipation fins are connected with the semiconductor refrigeration device to conduct heat of the semiconductor refrigeration device out; the fan is arranged close to the radiating fins.
Furthermore, the temperature-control rapid clamping refrigeration rotary table for mounting the high-temperature radioactive source comprises a hinge and an eccentric part; one side of the left clamp is connected with one side of the right clamp through a hinge, and the other side of the left clamp is connected with the other side of the right clamp through an eccentric component; the clamping opening can be changed along with the adjustment of the eccentric component to clamp/unclamp the radioactive source packaging shell assembly.
Furthermore, the temperature-control rapid clamping refrigeration rotary table for mounting the high-temperature radioactive source is characterized in that the eccentric part comprises an eccentric wheel and an elastic pressing block; the elastic pressing block is arranged on the left clamp and the right clamp; the eccentric wheel rotates to enable the elastic pressing block to deform/recover, so that the left clamp and the right clamp move relatively around the hinge to change the size of the clamping opening.
Furthermore, the temperature-control rapid clamping refrigeration rotary table for mounting the high-temperature radioactive source comprises a base, a conductive slip ring and a chuck; the high temperature radioactive source enclosure assembly is mountable on the chuck; the chuck is mounted on the base through the conductive slip ring; the base drives the chuck to rotate.
Furthermore, the temperature-control rapid clamping refrigeration rotary table for installing the high-temperature radioactive source is further provided with an electrode assembly for supplying power to the refrigeration structure of the clamp part.
Furthermore, the temperature-control rapid clamping refrigeration rotary table for installing the high-temperature radioactive source also comprises a worm wheel and worm rotary table and a stepping motor; the stepping motor is in driving connection with the turbine worm rotary table so as to drive the base arranged on the turbine worm rotary table to rotate.
The invention has the following beneficial effects:
1. according to the invention, the mode of arranging the refrigeration structure on the clamp is adopted, the cladding structure of the high-temperature radioactive source is cooled, and the ceramic adhesive can be ensured to be in a flowing state during packaging, so that the end cover can be ensured to be installed in place.
2. By adopting the semiconductor refrigeration and the heat dissipation mode combining the aluminum alloy heat dissipation fins and the fan, the heat of the high-temperature radioactive source can be quickly dissipated to the environment, the cooling effect is effectively increased, and the temperature of the carbon-carbon cladding cylinder body is prevented from being excessively increased.
3. The conductive slip ring structure is adopted, so that the semiconductor refrigerating device and the fan can rotate together with a workpiece during installation without power failure, and the temperature of the cylinder is ensured to be in a range required by the process; the hinged clamp is adopted, and the clamp can be quickly loosened after the high-temperature radioactive source is packaged by matching with an eccentric wheel wrench and an elastic pressing block structure, so that the operation time of personnel is greatly reduced, and the radiation dose of the personnel is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of a high temperature radioactive source package.
FIG. 2 is a schematic structural diagram of a temperature-controlled fast-clamping refrigeration turntable for mounting a high-temperature radioactive source.
FIG. 3 is a schematic diagram of a fixture assembly according to one embodiment of the present invention.
Fig. 4 is a schematic structural view of a turntable unit according to an embodiment of the present invention.
Fig. 5 is a schematic view of the use state of the temperature-controlled rapid-clamping refrigeration rotary table for mounting the high-temperature radioactive source.
In the above drawings, a jig member; B. a turntable part; C. a carbon-carbon cladding cylinder; D. an end cap; 1. a hinge; 2. a left clamp; 3. a right clamp; 4. a semiconductor refrigeration device; 5. a heat dissipating fin; 6. elastic pressing blocks; 7. a fan; 8. an eccentric wheel wrench; 9. a chuck; 10. an electrode assembly; 11. a conductive slip ring; 12. a base; 13. a worm gear turntable; 14. a stepper motor.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
If the high-temperature radioactive source is successfully packaged once, the temperature is not higher than 50 ℃ when the threaded end cover is required to rotate to enter the carbon-carbon cladding cylinder body, and is preferably kept at 0-40 ℃. In order to meet the requirement, the invention provides the turntable with the refrigeration function, when the carbon-carbon cladding cylinder is rotated, the carbon-carbon cladding cylinder is refrigerated, and heat emitted by a high-temperature radioactive source is taken away, so that the temperature of the carbon-carbon cladding cylinder and the temperature of the end cover are kept in a proper range. Meanwhile, the radioactive source can be clamped and released quickly to reduce the operation time and the radiation dose to operators.
As shown in fig. 2, the temperature-controlled fast-clamping refrigeration turntable for installing the high-temperature radioactive source comprises a turntable part B and a clamp part A with a refrigeration structure; the clamp assembly a is capable of clamping a high temperature radioactive source enclosure assembly mounted on the turret assembly B for cooling thereof and capable of being rotated by the turret assembly B.
As shown in fig. 3, the clamp part a further comprises a left clamp 2, a right clamp 3 and a fixing structure; the left clamp 2 and the right clamp 3 can be spliced to form a clamping opening for clamping the radioactive source enclosure assembly and can be fixedly connected through a fixing structure; the left clamp 2 and the right clamp 3 are respectively connected with a refrigeration structure to cool the radioactive source cladding assembly. The size of the clamping opening is matched with the carbon-carbon cladding cylinder.
The refrigerating structure comprises a semiconductor refrigerating device 4, a radiating fin 5 and a fan 7; the semiconductor refrigerating device 4 is arranged close to the left clamp 2/the right clamp 3; the heat dissipation fins 5 are connected with the semiconductor refrigeration device 4 to conduct heat of the semiconductor refrigeration device 4 out; the fan 7 is disposed adjacent to the heat radiating fins 5. The fixed structure comprises a hinge 1 and an eccentric part; one side of the left clamp 2 is connected with one side of the right clamp 3 through a hinge 1, and the other side of the left clamp is connected with the other side of the right clamp through an eccentric component; the clamping opening can be changed along with the adjustment of the eccentric component to clamp/unclamp the radioactive source packaging shell assembly.
In this embodiment, the surfaces of the left clamp 2 and the right clamp 3 are tightly and respectively attached to the cold ends of the semiconductor refrigeration devices 4, the hot ends of the semiconductor devices are tightly attached to the aluminum alloy radiating fins 5, the radiating fins 5 are fixed on the aluminum alloy clamp through bolts and tightly press the semiconductor devices, so that good thermal contact is realized, and heat can be quickly conducted away. The aluminum alloy radiating fins 5 are provided with the fans 7, and the fans 7 realize forced convection radiating for the radiating fins 5 to quickly radiate heat to the environment.
The eccentric part comprises an eccentric wheel and an elastic pressing block 6; the elastic pressing block 6 is arranged on the left clamp 2 and the right clamp 3; the eccentric wheel rotates to deform/recover the elastic pressing block 6, so that the left clamp 2 and the right clamp 3 move relatively around the hinge 1 to change the size of the clamping opening. The eccentric rotation can be achieved by turning the eccentric wrench 8.
As shown in fig. 4, the turntable assembly includes a base 12, a conductive slip ring 11, and a chuck 9; the high temperature radioactive source enclosure assembly is mountable on the chuck 9; the chuck 9 is mounted on the base 12 through the conductive slip ring 11; the base 12 rotates the chuck 9. A conductive slip ring 11 is mounted on a conductive slip ring base 12, coaxial with the chuck 9. The chuck 9 is further provided with an electrode assembly 10 for supplying power to the cooling structure of the clamp part a. The electrode assembly 10 is constantly in contact with the conductive slip ring 11 as the chuck 9 rotates, thereby providing uninterrupted power to the refrigeration structure. The turntable part also comprises a worm wheel and worm turntable 13 and a stepping motor 14; the stepping motor 14 is in driving connection with the worm gear and worm rotary table 13 to drive the base 12 mounted on the worm gear and worm rotary table 13 to rotate.
The turntable, the base, the carbon-carbon cladding cylinder and the end cover are coaxial, when the turntable rotates, the cladding cylinder is driven to rotate around the shaft, the end cover does not rotate, and the end cover moves downwards along the shaft line. The cladding cylinder body and the end cover rotate relatively, and the end cover can be screwed into the cylinder body. The stepping motor can accurately control the rotating speed of the rotary table, so that the mutual coupling of the rotating speed of the cladding cylinder and the downward moving speed of the end cover is ensured. The cladding cylinder body rotates for a circle, and the descending distance of the end cover is the thread pitch of the cylinder body threads so as to ensure smooth rotating installation.
When the radioactive source is installed, the carbon coated cylinder is clamped by the chuck in advance, the eccentric wheel is pulled upwards by 90 degrees, and the left clamp and the right clamp are loosened, as shown in fig. 5. Then the aluminum alloy clamp is sleeved on the carbon-carbon cladding cylinder downwards, the eccentric wheel wrench is returned to the pressing position, and the clamp tightly clamps the carbon-carbon cladding cylinder (the radioactive source cladding assembly). And then the fan and the semiconductor refrigeration device are connected into the electrode assembly through wires. The assembly process can be started. The turntable drives the chuck to rotate so as to drive the carbon-carbon cladding cylinder to rotate, and the aluminum alloy refrigeration clamp assembly tightly clamps the carbon-carbon cladding cylinder, so that the refrigeration clamp assembly also rotates around the axis of the carbon-carbon cladding cylinder. The power required by the semiconductor refrigeration device and the fan is provided by the electrode assembly, and the slip ring structure ensures that the semiconductor refrigeration device and the fan are not powered off when rotating. The semiconductor refrigeration device is rapidly reduced, the temperature of the clamp is reduced, the clamp tightly clamps the carbon-carbon cladding cylinder, most of heat of the high-temperature radioactive source is rapidly dissipated to the air through the refrigeration clamp, the temperature of the cylinder is prevented from being rapidly increased due to heat accumulation, and the temperature of the carbon-carbon cladding cylinder and the temperature of the threaded end cover are ensured to be at proper temperature in the whole installation process. After the threaded end cover is screwed in place, the encapsulated radioactive source can be taken away from the vertical direction only by turning the eccentric wheel spanner to the loosening position.
According to the invention, the mode of arranging the refrigeration structure on the clamp is adopted, the cladding structure of the high-temperature radioactive source is cooled, and the ceramic adhesive can be ensured to be in a flowing state during packaging, so that the end cover can be ensured to be installed in place. By adopting the semiconductor refrigeration and the heat dissipation mode combining the aluminum alloy heat dissipation fins and the fan, the heat of the high-temperature radioactive source can be quickly dissipated to the environment, the cooling effect is effectively increased, and the temperature of the carbon-carbon cladding cylinder body is prevented from being excessively increased. The conductive slip ring structure is adopted, so that the semiconductor refrigerating device and the fan can rotate together with a workpiece during installation without power failure, and the temperature of the cylinder is ensured to be in a range required by the process; the hinged clamp is adopted, and the clamp can be quickly loosened after the high-temperature radioactive source is packaged by matching with an eccentric wheel wrench and an elastic pressing block structure, so that the operation time of personnel is greatly reduced, and the radiation dose of the personnel is greatly reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (7)
1. The utility model provides a high temperature radiation source installation is with accuse temperature rapid clamping refrigeration revolving stage which characterized in that: comprises a turntable part and a clamp part with a refrigeration structure; the clamp part can clamp the high-temperature radioactive source cladding assembly mounted on the rotary table part to cool the high-temperature radioactive source cladding assembly and can be rotated by the rotary table part;
the clamp component also comprises a left clamp, a right clamp and a fixing structure; the left clamp and the right clamp can be spliced to form a clamping opening for clamping the radioactive source enclosure assembly and can be fixedly connected through a fixing structure; and the left clamp and the right clamp are respectively connected with a refrigeration structure to realize cooling of the radioactive source cladding assembly.
2. The temperature-controlled rapid-clamping refrigeration rotary table for installing the high-temperature radioactive source as claimed in claim 1, wherein: the refrigerating structure comprises a semiconductor refrigerating device, radiating fins and a fan; the semiconductor refrigeration device is arranged close to the left clamp/the right clamp; the heat dissipation fins are connected with the semiconductor refrigeration device to conduct heat of the semiconductor refrigeration device out; the fan is arranged close to the radiating fins.
3. The temperature-controlled rapid-clamping refrigeration rotary table for installing the high-temperature radioactive source as claimed in claim 1, wherein: the fixed structure comprises a hinge and an eccentric part; one side of the left clamp is connected with one side of the right clamp through a hinge, and the other side of the left clamp is connected with the other side of the right clamp through an eccentric component; the clamping opening can be changed along with the adjustment of the eccentric component to clamp/unclamp the radioactive source packaging shell assembly.
4. The temperature-controlled rapid-clamping refrigeration rotary table for installing the high-temperature radioactive source as claimed in claim 3, wherein: the eccentric part comprises an eccentric wheel and an elastic pressing block; the elastic pressing block is arranged on the left clamp and the right clamp; the eccentric wheel rotates to enable the elastic pressing block to deform/recover, so that the left clamp and the right clamp move relatively around the hinge to change the size of the clamping opening.
5. The temperature-controlled rapid-clamping refrigeration rotary table for installing the high-temperature radioactive source as claimed in any one of claims 1 to 4, wherein: the turntable component comprises a base, a conductive slip ring and a chuck; the high temperature radioactive source enclosure assembly is mountable on the chuck; the chuck is mounted on the base through the conductive slip ring; the base drives the chuck to rotate.
6. The temperature-controlled rapid-clamping refrigeration rotary table for installing the high-temperature radioactive source as claimed in claim 5, wherein: and the chuck is also provided with an electrode assembly for supplying power to the refrigeration structure of the clamp component.
7. The temperature-controlled rapid-clamping refrigeration rotary table for installing the high-temperature radioactive source as claimed in claim 5, wherein: the rotary table part also comprises a worm wheel and worm rotary table and a stepping motor; the stepping motor is in driving connection with the turbine worm rotary table so as to drive the base arranged on the turbine worm rotary table to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911093703.2A CN110833982B (en) | 2019-11-11 | 2019-11-11 | Temperature-control rapid clamping refrigeration rotary table for mounting high-temperature radioactive source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911093703.2A CN110833982B (en) | 2019-11-11 | 2019-11-11 | Temperature-control rapid clamping refrigeration rotary table for mounting high-temperature radioactive source |
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| Publication Number | Publication Date |
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| CN110833982A CN110833982A (en) | 2020-02-25 |
| CN110833982B true CN110833982B (en) | 2021-03-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101922778A (en) * | 2010-09-26 | 2010-12-22 | 广东新创意专利发展有限公司 | Semiconductor refrigerating air conditioning device |
| CN102231290A (en) * | 2011-06-01 | 2011-11-02 | 清华大学 | Material taking apparatus and material taking method of high temperature gas cooled reactor |
| CN103245681A (en) * | 2013-05-10 | 2013-08-14 | 中国原子能科学研究院 | Neutron gamma combined measuring equipment |
| CN206058912U (en) * | 2016-08-30 | 2017-03-29 | 金华润业智能科技有限公司 | A kind of nuclear industry demoulding segregation apparatuss |
| CN207965695U (en) * | 2018-04-08 | 2018-10-12 | 北京华宇德信光电技术有限公司 | A kind of accurate temperature control device under hot environment |
| CN207986625U (en) * | 2018-01-23 | 2018-10-19 | 山东代代良智能控制科技有限公司 | Container turntable mechanism |
-
2019
- 2019-11-11 CN CN201911093703.2A patent/CN110833982B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922778A (en) * | 2010-09-26 | 2010-12-22 | 广东新创意专利发展有限公司 | Semiconductor refrigerating air conditioning device |
| CN102231290A (en) * | 2011-06-01 | 2011-11-02 | 清华大学 | Material taking apparatus and material taking method of high temperature gas cooled reactor |
| CN103245681A (en) * | 2013-05-10 | 2013-08-14 | 中国原子能科学研究院 | Neutron gamma combined measuring equipment |
| CN206058912U (en) * | 2016-08-30 | 2017-03-29 | 金华润业智能科技有限公司 | A kind of nuclear industry demoulding segregation apparatuss |
| CN207986625U (en) * | 2018-01-23 | 2018-10-19 | 山东代代良智能控制科技有限公司 | Container turntable mechanism |
| CN207965695U (en) * | 2018-04-08 | 2018-10-12 | 北京华宇德信光电技术有限公司 | A kind of accurate temperature control device under hot environment |
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