CN217847449U - Heavy water reactor production 99 Target nuclei of Mo, production element and production component - Google Patents

Heavy water reactor production 99 Target nuclei of Mo, production element and production component Download PDF

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Publication number
CN217847449U
CN217847449U CN202220667415.4U CN202220667415U CN217847449U CN 217847449 U CN217847449 U CN 217847449U CN 202220667415 U CN202220667415 U CN 202220667415U CN 217847449 U CN217847449 U CN 217847449U
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target
production
tube
heavy water
nucleic acid
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邹正宇
尚宪和
孟智良
樊申
李世生
吴天垣
刘小年
刘大银
王军
徐军
张国利
牟小川
王文利
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CNNC Nuclear Power Operation Management Co Ltd
Third Qinshan Nuclear Power Co Ltd
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CNNC Nuclear Power Operation Management Co Ltd
Third Qinshan Nuclear Power Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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Abstract

The utility model discloses a heavy water reactor production 99 The Mo target nucleic acid comprises a target tube, a target material layer and a neutron absorber material, wherein the target material layer is sleeved outside the target tube, two ends of the target tube are respectively connected with an inner end plug, and the neutron absorber material is arranged in the target tube. Heavy water reactor production 99 The Mo target nucleic acid production element comprises a target nucleic acid, a cladding tube, an isolation block, a support block and an outer end plug, wherein the target nucleic acid is arranged in the circular tube-shaped cladding tube, and the outer ends of the cladding tube are welded at two endsThe plug seals the cladding tube, and the outside of the cladding tube is respectively welded with an isolating block and/or a supporting block. The production assembly comprises a production element and end plates, wherein the end plates are connected with two ends of the production element in a welding mode. The beneficial effects of the utility model reside in that: the effect of the utility model lies in that the carrier-free body is produced when the heavy water reactor is used for producing and generating electricity 99 Mo, satisfies the nuclear medicine field 99 Mo is required.

Description

Heavy water compostingProduct produced by birth 99 Target nuclei of Mo, production element and production component
Technical Field
The utility model belongs to the technical field of nuclear application, concretely relates to heavy water reactor production 99 Target nuclei of Mo, production elements and production components.
Background
99 Mo is the most important medical radioisotope 99m Parent nuclides of Tc. 99m Short Tc half-life (6.02 h), proper ray energy (140 keV), suitability for single photon emission tomography (SPECT), and labeling of various ligand drugs for annual use 99m Tc-labeled drugs are used for nuclear medicine imaging diagnosis for nearly 4000 million people, accounting for about 70% of all clinically used radiopharmaceuticals.
99 Mo is produced mainly by reactor irradiation, by accelerators and by neutron generators. Irradiation production on reactor 99 Mo with neutron capture 98 Mo(n,γ) 99 Mo and fission 235 U(n,f) 99 Mo and Mo in two ways. The former contains a large amount of 98 Isotope of Mo, hence called carrier 99 Mo, the latter containing a very small amount of Mo isotopes, is called unsupported 99 And Mo. Currently worldwide 99 Mo is mainly a carrier-free research for reactor production by fission 99 Mo, has been developed and utilized in heavy water heap for producing carriers internationally 99 Mo, until now, no carrier is produced by utilizing commercial heavy water reactor 99 Examples of Mo.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heavy water piles production 99 Target nucleic acid of Mo, production element and production assembly, produced 99 Mo is mainly applied to the field of nuclear medicine diagnosis.
The technical scheme of the utility model as follows: heavy water reactor production 99 The Mo target nucleic acid comprises a target tube, a target material layer and a neutron absorber material, wherein the target material layer is sleeved outside the target tube, two ends of the target tube are respectively connected with an inner end plug, and the neutron absorber material is arranged in the target tube.
The neutron absorber material is a depleted uranium pellet.
The depleted uranium pellets are arranged in the target pipe.
The neutron absorber is a zirconium rod, and a dysprosium coating is coated outside the zirconium rod.
The zirconium rod is arranged in the target tube.
Heavy water reactor production 99 The Mo target nucleic acid production element comprises a target nucleic acid, a cladding tube, an isolation block, a supporting block and an outer end plug, wherein the target nucleic acid is arranged in the circular tube-shaped cladding tube, the outer end plugs are welded at two ends of the cladding tube to seal the cladding tube, and the isolation block and/or the supporting block are respectively welded outside the cladding tube.
The cladding tube, the isolating block, the supporting block and the outer end plug are all made of Zr-4 alloy.
The inner wall of the cladding tube is coated with graphite, and helium is filled in an air gap between the cladding tube and the target core.
Production of heavy water reactor 99 The Mo target nucleic acid production assembly comprises a production element and end plates, wherein the end plates are welded and connected with two ends of the production element.
The end plate material is Zr-4 alloy.
The beneficial effects of the utility model reside in that: the effect of the utility model lies in that the carrier-free body is produced when the heavy water reactor is used for producing and generating electricity 99 Mo, satisfies the nuclear medicine field 99 Mo is required.
Drawings
FIG. 1 shows the production of heavy water reactor provided by the present invention 99 A schematic of the target nucleic acid producing element for Mo;
FIG. 2 shows a heavy water reactor production method provided by the present invention 99 A schematic diagram of Mo target nucleic acid production with depleted uranium as a neutron absorber;
FIG. 3 shows the production of heavy water reactor provided by the present invention 99 A schematic diagram of the production target nucleic acid of the Mo target nucleic acid with dysprosium as a neutron absorber;
FIG. 4 shows the production of heavy water reactor provided by the present invention 99 Schematic of the target nucleic acid production component for Mo;
fig. 5 is a cross-sectional view of fig. 4.
In the figure, 100 production assemblies, 1 production element, 2 end plates, 11 target nuclei, 12 cladding tubes, 13 outer end plugs, 14 support blocks, 15 spacer blocks, 111 target material layers, 112 target tubes, 113 depleted uranium pellets, 114 inner end plugs, 115 dysprosium coatings, 116 zirconium rods.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In order to achieve the purpose, the utility model provides a pair of heavy water reactor production 99 Target core of Mo, placed in heavy water reactor and subjected to neutron irradiation to produce 99 Mo, as shown in fig. 2 and 3, including a target tube 112, a target material layer 111, and a neutron absorber material, where the neutron absorber material shown in fig. 2 is a depleted uranium pellet 113, the neutron absorber material shown in fig. 3 is a zirconium rod 116 coated with a dysprosium coating 115, the target tube 112 is a circular tube structure, the target tube 112 is externally coated with the target material layer 111, two ends of the target tube 112 are respectively connected with an inner end plug 114, the target tube 112 and the inner end plugs 114 at the two ends form a closed space, and as shown in fig. 2, a plurality of depleted uranium pellets 113 as the neutron absorber material are arranged in the target tube 112; as shown in fig. 3, a zirconium rod 116 coated with a dysprosium coating 115 on its outer layer is disposed within the target tube 112.
Preferably, the target tube 112 is Zr-4 alloy or stainless steel. Electroplating the target material on the outer surface of the target tube by electrodeposition or other method, wherein the target material is selected from 235 Low-concentration uranium with U enrichment degree of 10-19.95%, and coating thickness of 20-100 μm.
The neutron absorber material can be depleted uranium or natural dysprosium (Dy).
Preferably, UO is used if the neutron absorber is depleted in uranium 2 The depleted uranium pellet is loaded in the target tube, and the two ends of the target tube are opened or sealed by welding by adopting inner end plugs. If the neutron absorber adopts natural dysprosium, the zirconium rod is arranged in the target tube, and the natural dysprosium is coated on the outer surface of the zirconium rod. Helium is filled in the target tube, and the two ends of the target tube are welded and sealed by adopting inner plugs.
As shown in figure 1, the utility model provides a heavy water reactor production 99 MoThe target nucleic acid producing element 1 comprises a target nucleic acid 11, a cladding tube 12, an isolating block 15, a supporting block 14 and an outer end plug 13, wherein the target nucleic acid 11 is arranged in the circular tube-shaped cladding tube 12, and the outer end plugs 13 are welded at two ends of the cladding tube 12 for sealing the cladding tube 12. The outside of the cladding tube 12 is welded with a spacer block 14 and a support block 15, respectively. The cladding tube 12, the isolation block 15, the supporting block 14 and the outer end plug 13 are all made of Zr-4 alloy, the inner wall of the cladding tube 12 is coated with graphite, and helium is filled in an air gap between the cladding tube 12 and the target nucleic acid 11.
As shown in fig. 4, a heavy water reactor production 99 The target nucleic acid production assembly of Mo comprises a production element 1 and an end plate 2. The production element 1 is positioned by the spacer block 15 and the end plate 2, the support block 14 avoiding the production element from contacting the inner surface of the fuel passage. The end plates 2 are welded to both ends of the production element 1. The end plate 2 material is Zr-4 alloy. The enrichment degree of the depleted uranium or the loading amount of dysprosium is determined according to the equivalence condition of the production assembly and the natural uranium fuel assembly.

Claims (10)

1. Heavy water reactor production 99 A target nucleic acid of Mo, characterized by: the neutron absorber target comprises a target tube, a target material layer and a neutron absorber material, wherein the target material layer is sleeved outside the target tube, two ends of the target tube are respectively connected with an inner end plug, and the neutron absorber material is arranged in the target tube.
2. A heavy water heap as claimed in claim 1 99 A target nucleus of Mo characterized by: the neutron absorber material is a depleted uranium pellet.
3. The heavy water reactor production of claim 2 99 A target nucleus of Mo characterized by: the depleted uranium pellets are arranged in the target tube.
4. A heavy water heap as claimed in claim 1 99 A target nucleus of Mo characterized by: the neutron absorber is a zirconium rod, and a dysprosium coating is coated outside the zirconium rod.
5. The production of a heavy water heap as claimed in claim 4 99 A target nucleus of Mo characterized by: the zirconium rod is arranged in the target tube.
6. Heavy water reactor production 99 A Mo target nucleic acid producing element characterized by: the target nucleic acid detecting device comprises a target nucleic acid, a cladding tube, an isolating block, a supporting block and/or an outer end plug, wherein the target nucleic acid is arranged in the circular tube-shaped cladding tube, the outer end plugs are welded at two ends of the cladding tube to seal the cladding tube, and the isolating block and/or the supporting block are respectively welded outside the cladding tube.
7. A heavy water heap production as claimed in claim 6 99 A Mo target nucleic acid producing element characterized by: the cladding tube, the isolating block, the supporting block and the outer end plug are all made of Zr-4 alloy.
8. The production of heavy water piles as claimed in claim 6 99 A Mo target nucleic acid producing element characterized by: the inner wall of the cladding tube is coated with graphite, and helium is filled in an air gap between the cladding tube and the target core.
9. Heavy water reactor production 99 A target nucleic acid production component of Mo, characterized by: comprises a production element and end plates, wherein the end plates are welded with two ends of the production element.
10. A heavy water heap production as claimed in claim 9 99 A target nucleic acid production component of Mo, characterized by: the end plate material is Zr-4 alloy.
CN202220667415.4U 2021-08-21 2022-03-24 Heavy water reactor production 99 Target nuclei of Mo, production element and production component Active CN217847449U (en)

Applications Claiming Priority (2)

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CN202110964170 2021-08-21
CN2021109641701 2021-08-21

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