CN113473828B - Shielding device for radioactive waste liquid glass solidification treatment system - Google Patents
Shielding device for radioactive waste liquid glass solidification treatment system Download PDFInfo
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- CN113473828B CN113473828B CN202110684240.8A CN202110684240A CN113473828B CN 113473828 B CN113473828 B CN 113473828B CN 202110684240 A CN202110684240 A CN 202110684240A CN 113473828 B CN113473828 B CN 113473828B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/16—Processing by fixation in stable solid media
- G21F9/162—Processing by fixation in stable solid media in an inorganic matrix, e.g. clays, zeolites
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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Abstract
The embodiment of the invention discloses a shielding device, which is applied to a system for carrying out glass solidification treatment on radioactive waste liquid by adopting a cold crucible, is arranged on at least one side of an inductor which generates an electromagnetic field in the system and/or electric equipment which is interfered by the electromagnetic field and is used for eliminating electromagnetic radiation interference, and comprises: a first electromagnetic absorption layer (11); at least one first conductive layer (20) and at least one second conductive layer (30) fixedly arranged on one side of the first electromagnetic absorption layer (11) in sequence; wherein, when the first conducting layer (20) and/or the second conducting layer (30) are multiple, a plurality of first conducting layers (20) and/or a plurality of second conducting layers (30) are arranged at intervals. The embodiment of the invention adopts a plurality of shielding layers to absorb and convert the energy of the electromagnetic field, thereby blocking the radiation and the propagation of the electromagnetic field and effectively eliminating the interference of the electromagnetic field on electric equipment.
Description
Technical Field
The embodiment of the invention relates to the technical field of radioactive waste liquid glass solidification, in particular to a shielding device for a radioactive waste liquid glass solidification treatment system.
Background
Currently, china is in the period of high-speed development of nuclear energy, and in the nuclear industry, a large amount of radioactive waste is generated. Among them, radioactive waste liquid, especially high-level radioactive waste liquid, is especially important for the treatment and disposal of radioactive waste liquid because of its characteristics of high specific activity, complex components, strong acidity, strong corrosiveness, containing some nuclides with long half-life and high biotoxicity, etc. The radioactive waste liquid is properly treated, so that the influence of the radioactive waste liquid on the environment can be reduced to the minimum.
The cold crucible glass solidification technology is a novel glass solidification technology for radioactive waste treatment in the world at present. The cold crucible glass solidification technology is that high-frequency current is generated by a high-frequency power supply, and then the high-frequency current is converted into electromagnetic current through an induction coil to penetrate into a material to be treated to form eddy current to generate heat, so that the material to be treated is melted into glass. The inner wall of the furnace body of the crucible is filled with cooling water, and the melt in the crucible is solidified on the inner wall of the crucible to form a cold wall, so the crucible is called as a cold crucible. Since the high temperature melt is not in direct contact with the cold crucible walls, the crucible walls are not corroded. The cold crucible does not need refractory materials or electrode heating, the corrosion and pollution to the crucible are greatly reduced because the melt is contained in the cold wall, the cold crucible has long service life and simple retirement, the cold crucible glass solidification technology has high melting temperature, wider waste treatment types and high solidification speed, and therefore, the cold crucible glass solidification technology has unique advantages in treating radioactive waste.
When the cold crucible is used for carrying out glass solidification treatment on the radioactive waste liquid, an inductor arranged outside the cold crucible forms an electromagnetic field in the cold crucible so as to melt materials in the cold crucible and realize glass solidification of the materials. The power source of the inductor is a high-frequency power supply, and the high-frequency power supply provides current for the inductor so that the inductor forms a high-frequency electromagnetic field inside the cold crucible, and therefore materials such as glass, radioactive waste liquid and the like in the cold crucible are melted. In addition, other high or medium frequency power supplies may be present in the radioactive waste vitrification system to provide current to the high or medium frequency inductors. For example, an inductor can be arranged outside the discharging device below the cold crucible, and the inductor forms an electromagnetic field in the discharging device through the current provided by the medium-frequency power supply to heat the material in the discharging device. When the high-frequency inductor or the medium-frequency inductor works, a strong space electromagnetic field is generated in the space around the high-frequency inductor or the medium-frequency inductor. When the high frequency power supply and the medium frequency power supply operate simultaneously, electromagnetic fields generated by the high frequency power supply and the medium frequency power supply are superposed with each other.
Disclosure of Invention
An aspect of the embodiments of the present invention provides a shielding apparatus for use in a system for performing a glass-melting treatment on a radioactive waste liquid using a cold crucible, the shielding apparatus being used for eliminating electromagnetic radiation interference, the shielding apparatus being disposed on at least one side of an inductor generating an electromagnetic field in the system and/or an electric device interfered by the electromagnetic field, the shielding apparatus comprising: a first electromagnetic absorption layer; at least one first conductive layer and at least one second conductive layer which are sequentially and fixedly arranged on one side of the first electromagnetic absorption layer; when the first conductive layers and/or the second conductive layers are multiple, the multiple first conductive layers and/or the multiple second conductive layers are arranged at intervals.
In some embodiments, the shielding apparatus further comprises: a second electromagnetic absorption layer fixedly connected to the first conductive layer or the second conductive layer, and the at least one first conductive layer and the at least one second conductive layer are connected between the first electromagnetic absorption layer and the second electromagnetic absorption layer.
In some embodiments, at least one of the first and second electrically conductive layers is symmetrically disposed between the first and second electromagnetically absorbing layers.
In some embodiments, the first and/or second electromagnetic absorption layers have an oxide protective film at least on a side thereof remote from the first and second conductive layers.
In some embodiments, the layers are fixedly attached to each other using an adhesive.
In some embodiments, the first and second electromagnetic absorption layers are made of a soft magnetic alloy; the first conductive layer is made of a first metal material; the second conductive layer is made of a second metal material.
In some embodiments, the first and second electromagnetic absorption layers comprise plates of iron-nickel soft magnetic alloy.
In some embodiments, the first metallic material comprises: electrical pure iron, electrolytic iron or carbonyl iron; the second metal material includes: pure copper.
In some embodiments, the second conductive layer comprises: a copper mesh, a copper plate, or a copper foil.
In some embodiments, the thickness of each layer and/or the number of first and second conductive layers is determined based on at least one of a property of a material of each layer, a property of the electromagnetic field, and a distance from the inductor.
In some embodiments, the properties of the material include at least: the electrical conductivity and magnetic permeability of the material.
Another aspect of the present invention provides a system for performing a glass solidification process on radioactive waste liquid, including: the cold crucible comprises a cold crucible body and at least one inductor, wherein one inductor is wound outside the cold crucible body; at least one shielding device as in any of the previous embodiments, the shielding device being arranged at least on one side of the inductor.
In some embodiments, the shield is disposed outside of the inductor.
In some embodiments, the shielding device is further disposed on at least one side of a powered device in the system.
In some embodiments, the powered device comprises: and the power supply is electrically connected with the inductor and used for providing current for the inductor.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the embodiments of the invention, which proceeds with reference to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
Fig. 1 is a schematic structural view of a shielding device according to an embodiment of the present invention disposed on one side of an inductor;
FIG. 2 is a schematic diagram of a shield according to an embodiment of the present invention disposed outside the inductor;
fig. 3 is a schematic structural diagram of a shielding apparatus according to a first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a shielding apparatus according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a shielding apparatus according to a third embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a shielding apparatus according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural view of a system for performing glass-setting treatment on radioactive liquid waste according to an embodiment of the present invention.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Description of the reference numerals:
100. a shielding device; 11. a first electromagnetic absorption layer; 12. a second electromagnetic absorption layer; 20. a first conductive layer; 30. a third conductive layer;
200. a cold crucible main body; 300. an inductor; 310. a first inductor; 320. a second inductor; 410. a first power supply; 420. a second power supply; 500. a discharge device; 600. other electrical devices.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without inventive step, are within the scope of protection of the invention.
It is to be noted that technical terms or scientific terms used herein should have the ordinary meaning as understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
An aspect of the embodiments of the present invention provides a shielding apparatus that may be applied to a system for performing a glass-melting process on radioactive waste liquid using a cold crucible, the shielding apparatus being provided at least one side of an inductor 300 generating an electromagnetic field in the system and/or a consumer interfered with the electromagnetic field, for eliminating interference of electromagnetic radiation.
The system for carrying out glass solidification treatment on the radioactive waste liquid comprises a cold crucible 200, an inductor 300 is arranged outside the main body of the cold crucible 200, the inductor 300 is connected with a power supply, the power supply can provide current for the inductor 300 so that the inductor 300 forms an electromagnetic field in the cold crucible, and glass in the cold crucible and the calcinations of the radioactive waste liquid can be melted under induction heating of the electromagnetic field to realize glass solidification on the radioactive waste liquid. The electromagnetic field generated by the inductor 300 is not only covered in the cold crucible 200, but also covered in the surrounding space of the inductor 300.
As shown in fig. 1, the shielding device 100 may be disposed on at least one side of the inductor 300 to shield an electromagnetic field generated by the inductor 300, so as to eliminate interference of the electromagnetic field with electric devices located at the side of the inductor 300.
In some embodiments, the shielding device includes a shielding plate disposed at least one of a front side, a rear side, a left side, a right side, an upper side, and a lower side of the inductor 300, and the electromagnetic field generated by the inductor 300 can be shielded at a side of the shielding plate close to the inductor 300 to eliminate interference of the electromagnetic field with the electric devices located in front of, behind, left of, right of, above, or below the inductor 300. For example, the shielding device 100 may be disposed at the right side of the inductor 300 to eliminate interference of the electromagnetic field generated by the shielding device with the electric equipment located at the right side of the inductor 300.
Optionally, the shielding plate may be further disposed on at least one side of the electric device interfered by the electromagnetic field in the system, and is configured to shield the electromagnetic field on a side of the shielding plate away from the electric device, so as to eliminate interference of the electromagnetic field generated by the inductor 300 and other electromagnetic fields in the space on the electric device.
As shown in fig. 2, the shielding apparatus 100 further includes a shielding case, which may be disposed outside the inductor 300 and is used for shielding the electromagnetic field generated by the inductor 300 in the shielding case, so as to eliminate interference of the electromagnetic field generated by the inductor 300 on the electric device in the surrounding space, and improve the operating efficiency and stability of the electric device.
Optionally, the shielding case may be further disposed outside the electric device interfered by the electromagnetic field in the system, and is configured to shield the electromagnetic field generated by the inductor 300 and other electromagnetic fields in the space outside the shielding case, so as to eliminate interference of the electromagnetic field on the electric device, and improve operation efficiency and stability of the electric device. Wherein the power consuming device may include: various electric equipment such as a power supply, a temperature measuring device, a feeding device and the like.
In some embodiments, the shielding device 100 includes a first electromagnetic absorbing layer 11 and at least one first conductive layer 20 and at least one second conductive layer 30. At least one first conductive layer 20 and at least one second conductive layer 30 are sequentially and fixedly disposed on one side of the first electromagnetic absorption layer 11. When the first conductive layer 20 and/or the second conductive layer 30 are plural, a plurality of spaces are provided between the first conductive layers 20 and/or between the second conductive layers 30.
The shielding apparatus 100 in this embodiment includes a plurality of shielding layers fixedly connected in sequence, wherein the first electromagnetic absorption layer 11 has good magnetic properties, can absorb electromagnetic energy, and blocks radiation propagation of a part of an electromagnetic field by using hysteresis loss of the electromagnetic field. Since the first conductive layer 20 and the second conductive layer 30 have high electrical conductivity and the electromagnetic field has large eddy current loss in the first conductive layer and the second conductive layer, the electromagnetic field energy can be continuously converted into heat, thereby blocking part of the radiation propagation of the electromagnetic field. The shielding device 100 in this embodiment absorbs and converts energy of an electromagnetic field through the multiple shielding layers, and utilizes hysteresis loss and eddy current loss of the multiple shielding layers to the electromagnetic field to block radiation and propagation of the electromagnetic field, and the shielding device 100 is disposed on at least one side of the inductor or the electric equipment, so that interference of the electromagnetic field generated by the inductor to the electric equipment or interference of other electromagnetic fields in space to the electric equipment can be effectively eliminated, and the operating efficiency and stability of the electric equipment are improved.
Fig. 3 is a schematic structural diagram of a shielding apparatus according to a first embodiment of the present invention. As shown in fig. 3, the shielding apparatus 100 includes a first electromagnetic field absorption layer 11, and a first conductive layer 20 and a second conductive layer 30 fixedly connected to one side of the first electromagnetic field absorption layer 11 in this order. With the shielding device 100 in this embodiment, the first electromagnetic absorption layer 11 of the shielding device 100 is disposed toward the electromagnetic field, so that energy of the electromagnetic field is firstly absorbed by the first electromagnetic absorption layer 11, and then the energy of the remaining electromagnetic field is converted into heat by using the eddy current effect of the first conductive layer 20 and the second conductive layer 30, thereby blocking propagation of the electromagnetic field and eliminating interference of the electromagnetic field.
Fig. 4 shows a schematic structural diagram of a shielding apparatus according to a second embodiment of the present invention. As shown in fig. 4, the shielding apparatus 100 in the present embodiment includes a first electromagnetic absorption layer 11, and a plurality of first conductive layers 20 and second conductive layers 30 fixedly connected to one side of the first electromagnetic absorption layer 11 in this order. With the shielding device 100 in this embodiment, the first electromagnetic absorption layer 11 absorbs electromagnetic energy, and the first conductive layers 20 and the second conductive layers 30 sequentially absorb eddy current loss of an electromagnetic field, so that the electromagnetic field energy is continuously converted into heat, radiation propagation of the electromagnetic field is effectively blocked, and elimination of electromagnetic field interference is ensured.
In addition, other settings and operating principles in this embodiment are the same as those in the first embodiment, and are not described herein again.
In some embodiments, the shielding apparatus 100 may further include a second electromagnetic absorption layer 12. The second electromagnetic absorption layer 12 is fixedly connected to one side of the first conductive layer 20 or the second conductive layer 30, and the at least one first conductive layer 20 and the at least one second conductive layer 30 are connected between the first electromagnetic absorption layer 11 and the second electromagnetic absorption layer 12. In the present embodiment, the first electromagnetic absorption layer 11 and the second electromagnetic absorption layer 12 are provided at the outermost layers of the shielding device 100, and the first conductive layer 20 and the second conductive layer 30 are sequentially connected therebetween. By adopting the shielding device 100 in this embodiment, the electromagnetic field sequentially passes through the hysteresis loss of the first electromagnetic absorption layer 11, the eddy current loss of the first conductive layer 20 and the second conductive layer 30, and the hysteresis loss of the second electromagnetic absorption layer 12, so as to absorb and convert the energy of the electromagnetic field, effectively block the radiation propagation of the electromagnetic field, and ensure the effect of eliminating the electromagnetic field interference.
Fig. 5 shows a schematic structural diagram of a shielding apparatus according to a third embodiment of the present invention. As shown in fig. 5, the shielding apparatus 100 in the present embodiment includes a first electromagnetic absorption layer 11 and a second electromagnetic absorption layer 12, a plurality of first conductive layers 20 and a plurality of second conductive layers 30 are fixedly connected between the first electromagnetic absorption layer 11 and the second electromagnetic absorption layer 12, and the plurality of first conductive layers 20 and the plurality of second conductive layers 30 are disposed at intervals.
In addition, the working principle of the shielding device in this embodiment is the same as that in the first embodiment, and therefore, the description thereof is omitted.
Fig. 6 is a schematic structural diagram of a shielding apparatus according to a fourth embodiment of the present invention. As shown in fig. 6, between the first electromagnetic absorption layer 11 and the second electromagnetic absorption layer 12, at least one first conductive layer 20 and at least one second conductive layer 30 are symmetrically disposed. When the first electromagnetic absorption layer 11 and the second electromagnetic absorption layer 12 are the same, the shielding device 100 of the embodiment is symmetrically arranged along the axis thereof, and by using the shielding device 100 of the embodiment, the shielding device 100 can be arranged outside the inductor 300 or the electric equipment without distinguishing the front side and the back side of the shielding device, so that the use is convenient.
In addition, other settings and operating principles in this embodiment are the same as those in the first embodiment, and are not described herein again.
In some embodiments, the first electromagnetic absorption layer 11 and the second electromagnetic absorption layer 12 are further provided with an oxide protection film thereon. As shown in fig. 6, at least one side of the first electromagnetic absorption layer 11 away from the first conductive layer 20 and the second conductive layer 30, and/or at least one side of the second electromagnetic absorption layer 12 away from the first conductive layer 20 and the second conductive layer 30, has an oxide protection film (not shown), that is, an oxide protection film is provided on the outermost layer of the shielding device. The shielding device protected by oxidation has good environmental adaptability, is prevented from being corroded and damaged, and plays a role in protection.
In some embodiments, the layers are fixedly attached using an adhesive. Specifically, the first electromagnetic absorption layer 11 and the first conductive layer 20, the first conductive layer 20 and the second conductive layer 30, and the first conductive layer 20 or the second conductive layer 30 and the second electromagnetic absorption layer 12 are fixedly connected by an adhesive. Optionally, the adhesive is an insulating adhesive to prevent the layers from conducting electricity with each other and affecting the electromagnetic shielding effect. Optionally, the adhesive is a high-temperature-resistant adhesive to prevent heat generated by the first conductive layer 20 and the second conductive layer 30 from affecting the adhesive fixation.
In some embodiments, the first and second electromagnetic absorption layers 11 and 12 are made of a soft magnetic alloy. The soft magnetic alloy has higher magnetic conductivity and better shielding effect on both high-frequency electromagnetic field and low-frequency electromagnetic field. The first conductive layer 20 is made of a first metal material, and the second conductive layer 30 is made of a second metal material. The metal material has high conductivity, and can block radiation propagation of an electromagnetic field by using eddy current loss.
Specifically, the first electromagnetic absorption layer 11 and the second electromagnetic absorption layer 12 include an iron-nickel soft magnetic alloy plate. The iron-nickel soft magnetic alloy has high plasticity and can be processed into any shape and thickness, such as ultra-thin sheet. In addition, in the iron-nickel soft magnetic alloy, a proper amount of alloy elements can be added to prepare a high-permeability soft magnetic alloy, and the high-permeability property of the high-permeability soft magnetic alloy is favorable for absorbing electromagnetic energy.
Specifically, the first metal material may include electrical pure iron, electrolytic iron, carbonyl iron, or the like, and the first metal material has low price, good processability, stable magnetic property, and can effectively shield a low-frequency electromagnetic field. The second metal material can include pure copper, and pure copper has higher conductivity, utilizes the eddy current effect effectively to shield the electromagnetic field, and simultaneously, pure copper has good heat conductivity, and shield assembly 100 constantly converts electromagnetic energy into joule heat, and pure copper can in time derive the heat, prevents shield assembly 100's high temperature, is favorable to shield assembly 100's heat dissipation. The pure copper is excellent in plasticity, easy to process, and can be processed into any shape, and in some embodiments, the second conductive layer 30 may include a copper mesh, a copper plate, or a copper foil, and the second conductive layer 30 generates eddy current in the high-frequency electromagnetic field, thereby consuming the electromagnetic field energy in the second conductive layer 30.
In some embodiments, the thickness of each layer and/or the number of first and second conductive layers 20, 30 may be determined based on at least one of the properties of the material of each layer, the properties of the electromagnetic field, and the distance from the inductor. The shielding device in this embodiment uses hysteresis loss and eddy current loss in the electromagnetic field to dissipate electromagnetic energy to block radiation propagation of the electromagnetic field. The hysteresis loss is related to the properties of the material used for the layers of the shielding and the properties of the electromagnetic field, while the eddy current loss is related to the properties of the material and the properties of the electromagnetic field. Wherein the properties of the material at least comprise: the conductivity and permeability of the material and the thickness of the material, the properties of the electromagnetic field at least include: the frequency of the electromagnetic field, the magnetic induction, etc., and the magnetic induction is related to the distance from the inductor 300 generating the electromagnetic field. The thickness of each layer and the number of the first conductive layers 20 and the second conductive layers 30 are determined according to the material properties of each layer, the properties of the electromagnetic field and the distance from the inductor 300, so that the shielding device 100 can effectively shield the electromagnetic field generated by the inductor to eliminate the interference of the electromagnetic field on the electric equipment.
In another aspect, the embodiment of the invention also provides a system for performing glass solidification treatment on the radioactive waste liquid. The system includes a cold crucible 200, at least one inductor, and at least one shielding device 100. Wherein an inductor is wound around the outside of the body of the cold crucible 200 for forming an electromagnetic field inside the cold crucible to inductively heat and melt the glass and the radioactive liquid waste calcine inside the cold crucible 200. The shielding device comprises the shielding device 100 in the above embodiment, and the shielding device 100 is disposed at least on one side of the inductor and is used for shielding an electromagnetic field formed around the inductor so as to eliminate interference of the electromagnetic field on electric equipment in the system.
Fig. 7 shows a schematic view of the system according to an embodiment of the invention. As shown in FIG. 7, the system comprises a cold crucible 200, a first inductor 310 is wound outside the body of the cold crucible 200, a discharge device 500 is arranged below the cold crucible 200, and a second inductor 320 is wound outside the discharge device 500. The first inductor 310 is electrically connected with a first power source 410, the second inductor 320 is electrically connected with a second power source 420, and the first power source 410 and the second power source 420 respectively provide current for the first inductor 310 and the second inductor 320, so that an energy source is provided for heating and melting the material in the cold crucible and operating the discharging device. Specifically, the first power source 410 includes a high frequency power source, the second power source 420 includes a medium frequency power source, and the first inductor 310 and the second inductor 320 can generate electromagnetic fields in the space around the first inductor and the second inductor when operating simultaneously, and when the first inductor and the second inductor operate simultaneously, the generated electromagnetic fields are superposed with each other, which greatly affects the operation of the electric devices around the first inductor and the second inductor.
In the present embodiment, at least one side of the first inductor 310 and/or the second inductor 320 is provided with a shielding device 100 to eliminate interference of an electromagnetic field generated by the shielding device with a mobile device on one side of the shielding device. As shown in fig. 7, a shielding apparatus 100 is disposed at the left side of the first inductor 310 and the second inductor 320 to eliminate interference of electromagnetic fields with a power supply 410 or other devices at the left side thereof. In some embodiments, the shielding device 100 may also be disposed outside the inductor to shield the electromagnetic field generated by the shielding device 100 from the space enclosed by the inductor, so as to eliminate interference of the electromagnetic field with the electric equipment around the inductor.
In some embodiments, a shielding device 100 may also be disposed between the cold crucible 200 and the discharge device 500 (not shown in the figures) to prevent mutual interference between the electromagnetic fields generated by the first inductor 310 outside the cold crucible and the second inductor 320 outside the discharge device.
In this embodiment, the shielding apparatus 100 may be disposed on at least one side of the electric device in the system. The powered device may be a power supply connected to the inductor for providing current to the inductor. As shown in fig. 7, the shielding device 100 is disposed outside the power supply 420, so that the electromagnetic field can be shielded outside the shielding device 100 to eliminate the influence of the electromagnetic field on the power supply 420. It should be noted that, in addition to other electric devices 600 in the system, the shielding device 100 may be provided to eliminate interference of the electromagnetic field with other electric devices 600.
It should be noted that the shielding device 100 in the present embodiment is not limited to the shielding plate and the shielding cover, and in other embodiments, the shielding device 100 may be a hollow cylinder, a hemisphere, or the like. The present embodiment does not limit the shape of the shielding device, and the shielding device 100 includes any shape of the shielding device made of the first electromagnetic absorption layer, the first conductive layer, the second conductive layer, and the second electromagnetic absorption layer.
The shielding device of the embodiment comprises a plurality of shielding layers made of different materials, so that the interference of an electromagnetic field on electric equipment can be effectively shielded, and the operation efficiency and the stability of the electric equipment are improved.
In addition, the system for performing glass curing on radioactive waste liquid provided by the embodiment of the invention has all the beneficial effects by arranging the shielding device in any technical scheme, and the details are not repeated.
It should also be noted that, in the case of the embodiments of the present invention, features of the embodiments and examples may be combined with each other to obtain a new embodiment without conflict.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention is subject to the scope of the claims.
Claims (9)
1. A shielding device is applied to a system for carrying out glass solidification treatment on radioactive waste liquid by adopting a cold crucible and is characterized in that,
the shielding device is arranged on at least one side of an inductor generating an electromagnetic field in the system and/or electric equipment interfered by the electromagnetic field, is used for eliminating electromagnetic radiation interference, and comprises:
a first electromagnetic absorption layer (11) and a second electromagnetic absorption layer (12);
a plurality of first conductive layers (20) and at least one second conductive layer (30) which are sequentially connected between the first electromagnetic absorption layer (11) and the second electromagnetic absorption layer (12) and between the first electromagnetic absorption layer (11) and the second electromagnetic absorption layer (12), wherein the plurality of first conductive layers (20) and the at least one second conductive layer (30) are symmetrically arranged;
wherein, one second conductive layer (30) is connected between every two adjacent first conductive layers (20), so that a plurality of first conductive layers (20) are arranged at intervals; when the second conducting layers (30) are multiple, one first conducting layer (20) is connected between every two adjacent second conducting layers (30), so that the second conducting layers (30) are arranged at intervals;
the first electromagnetic absorption layer (11) and the second electromagnetic absorption layer (12) are made of a soft magnetic alloy, and the first electromagnetic absorption layer (11) and the second electromagnetic absorption layer (12) comprise iron-nickel soft magnetic alloy plates;
the first conductive layer (20) is made of a first metallic material comprising: electrician pure iron, electrolytic iron or carbonyl iron;
the second conductive layer (30) is made of a second metal material including: pure copper;
determining the thickness of each layer and/or the number of first (20) and second (30) conductive layers based on at least one of the properties of the material of each layer, the properties of the electromagnetic field, and the distance from the inductor.
2. The shielding device of claim 1,
the first electromagnetic absorption layer (11) and/or the second electromagnetic absorption layer (12) have an oxide protection film at least on the side facing away from the first conductive layer (20) and the second conductive layer (30).
3. The shielding device of claim 1, wherein the layers are fixedly attached to each other using an adhesive.
4. The shielding device according to claim 1, wherein the second conductive layer (30) comprises: copper mesh, copper plate or copper foil.
5. The shielding device of claim 1, wherein the properties of the material comprise at least: the electrical conductivity and magnetic permeability of the material.
6. A system for vitrification of radioactive waste liquid, comprising:
a cold crucible (200),
at least one inductor, wherein one inductor is wound outside the main body of the cold crucible (200);
at least one shielding device (100) according to any one of claims 1 to 5, the shielding device (100) being arranged at least on one side of the inductor.
7. The system of claim 6, wherein the shielding device (100) is housed outside the inductor.
8. A system according to claim 6, characterized in that the shielding means (100) is also arranged on at least one side of the electric consumers in the system.
9. The system of claim 8, wherein the powered device comprises: and the power supply is electrically connected with the inductor and is used for providing current for the inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684240.8A CN113473828B (en) | 2021-06-21 | 2021-06-21 | Shielding device for radioactive waste liquid glass solidification treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684240.8A CN113473828B (en) | 2021-06-21 | 2021-06-21 | Shielding device for radioactive waste liquid glass solidification treatment system |
Publications (2)
| Publication Number | Publication Date |
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| CN113473828A CN113473828A (en) | 2021-10-01 |
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| TWI537142B (en) * | 2013-11-29 | 2016-06-11 | Metal Ind Res & Dev Ct | Composite electromagnetic shielding material and its manufacturing method |
| CN103619154B (en) * | 2013-12-09 | 2016-09-14 | 保定乐凯新材料股份有限公司 | A kind of electromagnetic protection film with high-efficiency shielding and electromagnetic absorption |
| TW201601915A (en) * | 2014-07-07 | 2016-01-16 | 聯茂電子股份有限公司 | Electromagnetic interference shielding film |
| CN107957194A (en) * | 2016-10-18 | 2018-04-24 | 宁波兴展旺节能科技有限公司 | A kind of electromagnetic induction aluminium melting furnace |
| CN107464602A (en) * | 2017-09-16 | 2017-12-12 | 深圳市华琥技术有限公司 | A kind of film body for shielding electromagnetism |
| CN210042723U (en) * | 2019-02-20 | 2020-02-07 | 苏州铂韬新材料科技有限公司 | Electromagnetic shielding structure |
| CN111050535A (en) * | 2019-12-24 | 2020-04-21 | 苏州威斯东山电子技术有限公司 | Broadband high-efficiency electromagnetic shielding material with soft magnetic material and metal composite lamination |
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