CN113674914B - High heat dissipation structure superconducting cable of stacking mode - Google Patents
High heat dissipation structure superconducting cable of stacking mode Download PDFInfo
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- CN113674914B CN113674914B CN202110972516.2A CN202110972516A CN113674914B CN 113674914 B CN113674914 B CN 113674914B CN 202110972516 A CN202110972516 A CN 202110972516A CN 113674914 B CN113674914 B CN 113674914B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The invention discloses a superconducting cable with a novel stacking type high-heat-dissipation structure, which comprises a supporting part, a cooling part and a superconducting part, wherein the supporting part is arranged on the superconducting cable; the cooling part and the superconducting part are respectively arranged in the supporting part; the supporting part comprises a central column, a plurality of supporting components which are circumferentially distributed at equal intervals are fixedly connected to the outer edge of the central column, and the cooling part is arranged in the supporting components; the superconducting parts are arranged between two adjacent supporting assemblies, and the cooling parts and the superconducting parts are distributed at intervals; an outer encapsulating armor is disposed outside the support assembly. The novel stacking type high-heat-dissipation-structure superconducting cable disclosed by the invention is simple and compact in structure, good in conductive effect, large in heat exchange area of the superconducting part, good in heat exchange effect, capable of effectively protecting and preventing the cable from being damaged due to overheating, and has strong popularization significance.
Description
Technical Field
The invention relates to the technical field of power engineering equipment, in particular to a superconducting cable with a high-heat-dissipation structure in a stacking mode.
Background
Compared with the conventional cable, the high-temperature superconducting cable has the advantages of high current-carrying capacity, low alternating-current loss and the like, and has more outstanding advantages in long-distance large-scale power transmission, so that the high-temperature superconducting cable with large current-carrying capacity has great development space.
Because the current-carrying capacity of a single strip is limited, and the current-carrying capacity of the electrified conductor can be improved by connecting a plurality of high-temperature superconducting strips in parallel, the plurality of high-temperature superconducting strips in parallel become a necessary trend for the development of the electrified conductor of the superconducting cable. However, the contact area between the stacked high-temperature superconducting tapes and liquid nitrogen in the conventional superconducting cable is small, the heat exchange area is insufficient, the cooling speed is high, the efficiency is low, and the cable cannot dissipate heat in time when heating; if the cable stacking mode is converted into the parallelogram stacking mode, the heat exchange area of the high-temperature superconducting tape and liquid nitrogen is enlarged, the heat exchange efficiency is improved, and compared with a spiral twisted cable, the parallelogram stacking mode has the advantages that the current density is high, the tape is not easy to bend and damage, and the manufacture is easy; if the holes are arranged on the superconducting cable support and the superconducting cable support is changed into a net structure, the contact area of the surface of the superconducting strip and liquid nitrogen can be greatly increased, and the heat exchange efficiency is improved; and if the liquid nitrogen precooling pipe is arranged in the middle of the superconducting cable support to precool the high-temperature superconducting cable, the liquid nitrogen cooling rate can be further accelerated, the liquid nitrogen consumption is saved, and the cable economy is improved.
Disclosure of Invention
The present invention is directed to a superconducting cable with a high heat dissipation structure in a stacked manner, so as to solve the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a superconducting cable with a high heat dissipation structure in a stacking mode, which comprises a supporting part, a cooling part and a superconducting part, wherein the supporting part is arranged on the superconducting cable; the cooling part and the superconducting part are respectively arranged in the supporting part;
the supporting part comprises a central column, a plurality of supporting components which are circumferentially distributed at equal intervals are fixedly connected to the outer edge of the central column, and the cooling part is arranged in the supporting components; the superconducting parts are arranged between two adjacent supporting assemblies, and the cooling parts and the superconducting parts are distributed at intervals;
an outer encapsulated armor is disposed outwardly of the support assembly.
Preferably, the superconducting part comprises a plurality of circumferentially equally spaced superconducting stacks, and the number of the superconducting stacks is matched with the number of the supporting components; and any superconducting stack is arranged between the adjacent supporting components, and the side edges of the superconducting stack are respectively attached to the two adjacent supporting components.
Preferably, the superconducting stack comprises a plurality of superconducting tapes, the superconducting tapes are horizontally overlapped and fixedly connected, and the cross section of the finally formed superconducting stack is a parallelogram.
Preferably, the support assembly comprises two support plates, one end of each support plate is fixedly connected with the outer wall of the central column, and a certain included angle is formed between the two support plates; the cooling part is arranged between the two support plates, and the inner wall of the outer packaging armor is fixedly connected with one end, far away from the center column, of each support plate.
Preferably, a plurality of communicating holes are formed in the support plate in an array mode.
Preferably, the cooling part comprises a plurality of cooling pipes, and the number of the cooling pipes is equal to that of the support assemblies; the cooling pipeline is arranged between the two supporting plates of the supporting component, and the outer walls of the cooling pipeline are respectively attached to the supporting plates.
Preferably, a plurality of injection holes are formed outside the cooling pipeline, and the cooling pipeline is communicated with the inner cavity of the external packaging armor through the injection pipes.
Preferably, the inner cavity of the outer encapsulated armor is filled with a fixing medium including, but not limited to, epoxy resin, paraffin.
The invention discloses the following technical effects: the invention discloses a superconducting cable with a high-heat-dissipation structure in a stacking mode, wherein a superconducting part and a cooling part are fixed through supporting components which are circumferentially arranged at equal intervals, so that the heat exchange area of the superconducting part is increased, the heat exchange effect is improved, heat can be taken away in time when a cable fails to generate heat, the cable is prevented from being burnt, and the operation stability of the high-temperature superconducting cable is improved; the cooling part pre-cools the superconducting part before the superconducting cable is electrified, so that the unrecoverable damage to the cable caused by the large stress gathered by thermal expansion and cold contraction during formal cooling can be avoided; the supporting part and the external packaging armor have a supporting function, and the superconducting cable is protected from being damaged by the outside. The high-heat-dissipation-structure superconducting cable in the stacking mode is simple and compact in structure, good in conducting effect, large in heat exchange area of the superconducting part, good in heat exchange effect, capable of being effectively protected, capable of preventing the cable from being damaged due to overheating and high in popularization significance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a three-dimensional view of a superconducting cable of a high heat dissipation structure according to a stacking method of the present invention;
FIG. 2 is a three-dimensional view of the support assembly of the present invention;
FIG. 3 is a schematic structural view of a superconducting cable with a high heat dissipation structure according to a stacking method of the present invention;
FIG. 4 is a schematic view of the support assembly of the present invention;
FIG. 5 is a schematic structural view of a superconducting stack of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 3;
FIG. 7 is a schematic view of a joint assembly according to embodiment 2 of the present invention;
FIG. 8 is a partial enlarged view of B in FIG. 7;
FIG. 9 is an enlarged view of a portion C of FIG. 7;
FIG. 10 is a schematic view of a superconducting stacked joint structure in example 2;
FIG. 11 is a diagram illustrating an external package connector structure of example 2;
wherein, 1, a superconductive part; 2. a support portion; 3. a cooling section; 4. a central column; 5. sheathing armor on the outer part; 6. a support assembly; 7. superconducting stacking; 8. a cooling pipe; 9. an injection hole; 601. a support plate; 602. a communicating hole; 701. a superconducting tape; 11. a central column joint; 12. a superconducting stacked joint; 13. cooling the pipe joint; 14. an external package connector; 1101. a first joint; 1102. a second joint; 1103. a nut is sleeved; 1104. a connecting sleeve; 1105. a return spring; 1201. a third joint; 1202. adjusting the stack; 1301 a fourth joint; 1302 an adjustment tube; 1303 a limiting block; 1304 an articulated lever; 1305 compressing the nut; 1401 an outer shell; 1402 fastening the nut; 1403 elastic sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
Referring to fig. 1 to 6, the present invention provides a superconducting cable of a high heat dissipation structure in a stacked manner, including a supporting part 2, a cooling part 3, and a superconducting part 1; the cooling part 3 and the superconducting part 1 are respectively arranged in the supporting part 2; the supporting part 2 and the cooling part 3 are made of metal with high strength and good heat conductivity, the superconducting part 1 is used for realizing the superconducting function of the superconducting cable with the high heat dissipation structure in the stacking mode, and the cooling part 3 is used for cooling the superconducting cable, so that the influence of overheating on the power transmission efficiency in the power transmission process of the superconducting cable is prevented, and even the damage of the superconducting part 1 caused by overheating is prevented; the cooling part 3 and the superconducting part 1 are arranged between the supporting parts 2, wherein the superconducting part 1 is radiated by utilizing the characteristic of high heat conductivity of metal, and the cooling part 3 and the superconducting part 1 are protected in the supporting parts 2 by utilizing the supporting property of the supporting parts 2, so that the cooling part 3 and the superconducting part 1 are prevented from being damaged;
the supporting part 2 comprises a central column 4, a plurality of supporting components 6 which are circumferentially distributed at equal intervals are fixedly connected to the outer edge of the central column 4, and the cooling part 3 is arranged in the supporting components 6; the superconducting parts 1 are arranged between two adjacent supporting assemblies 6, and the cooling parts 3 and the superconducting parts 1 are distributed at intervals;
an outer packaging armor 5 is arranged outside the supporting component 6, the outer packaging armor 5 mainly plays a role of protecting the superconducting part 1 and the cooling part 3 inside the high-temperature superconducting cable, and a material with high supporting strength is selected, wherein the material comprises but is not limited to stainless steel, and the shape of the material comprises but is not limited to a circle in the drawing.
According to a further optimization scheme, the superconducting part 1 comprises a plurality of superconducting stacks 7 which are circumferentially distributed at equal intervals, and the number of the superconducting stacks 7 is matched with that of the supporting assemblies 6; any superconducting stack 7 is arranged between the adjacent supporting assemblies 6, and the side edges of the superconducting stack 7 are respectively attached to the two adjacent supporting assemblies 6; the superconducting stack 7 comprises a plurality of superconducting tapes 701, the superconducting tapes 701 are horizontally overlapped and fixedly connected, and the cross section of the finally formed superconducting stack 7 is a parallelogram. The superconductive stacks 7 are distributed with a central axis symmetry, so that the cable is less influenced by the surrounding magnetic and electric fields when the direction is changed. The superconducting stacks 7 are positioned between two adjacent supporting components 6, a plurality of superconducting tapes 701 are fixedly connected in parallel according to a certain dislocation angle, and the cross section of the manufactured superconducting stacks 7 is a parallelogram; under the condition of the same area, the perimeter of the parallelogram is larger than that of the square and the rectangle, and the electrification amount of the superconducting cable is determined according to the sectional area, so the superconducting stack 7 with the parallelogram as the section has larger heat exchange surface area and better heat exchange effect. The number and stacking angle of the superconducting tapes 701 in the superconducting stack 7 are determined according to the needs, and the specific number includes, but is not limited to, 6 shown in the drawings, and the superconducting tapes 701 are fixedly connected in a manner including, but not limited to, welding and gluing, as long as the stacking is firm and the conductivity of the superconducting tapes is not affected.
Furthermore, the superconducting stack 7 is covered with a protective layer (not shown) made of a material with good heat dissipation but insulation, so as to prevent the current in the superconducting stack 7 from conducting electricity between the supporting members 6 in contact with the superconducting stack 7 on the premise of not affecting the electrical conductivity and heat dissipation of the superconducting stack 7.
In a further optimized scheme, the supporting component 6 comprises two supporting plates 601, one end of each supporting plate 601 is fixedly connected with the outer wall of the central column 4, and a certain included angle is formed between the two supporting plates 601; the cooling part 3 is arranged between the two support plates 601, and the inner wall of the outer packaging armor 5 is fixedly connected with one end of the support plate 601 far away from the central column 4; a plurality of communication holes 602 are formed in the support plate 601 in an array. Two support plates 601 of the support assembly 6 are fixedly connected to the outer wall of the central column 4 at a certain included angle, one end, far away from the central column 4, of each support plate 601 is fixedly connected with the inner wall of the outer packaging armor 5, a support framework with the outer packaging armor 5 as a skin and the support plates 601 as a framework is formed, and the support framework supports and protects the inner cable stacking and pre-cooling pipes; the pre-cooling pipe is arranged between the two support plates 601 and is simultaneously attached to the two support plates 601, then the pre-cooling pipe is fixed, the pre-cooling pipe is clamped between the two support plates 601, the low temperature in the pre-cooling pipe is transmitted to the support plates 601 through the outer walls of the cooling pipelines 8, the support plates 601 keep low temperature, and the low temperature is transmitted to the superconducting stacks 7 attached to the support plates 601, and the cooling effect on the superconducting stacks 7 is good due to the high thermal conductivity of metal. A plurality of intercommunicating pores 602 have been seted up to the array on the face of backup pad 601, make the both sides of backup pad 601 communicate each other, and then make supporting part 2 constitute network structure, each terminal surface that the circulation that makes the liquid nitrogen of cooling part 3 can be smooth contacts the superconduction and piles up 7, can the heat transfer area that 7 and liquid nitrogen were piled up to the greatly increased superconduction, improve heat exchange efficiency, can in time take away the heat when the cable fault generates heat, avoid burning out of cable, the operating stability of high temperature superconducting cable has been improved. The number of the supporting assemblies 6 is greater than or equal to 2, and the specific number is determined according to specific needs, but the opposite supporting assemblies 6 must be kept in the central axial symmetry distribution to facilitate the arrangement of the superconducting stacks 7.
In a further optimized scheme, the cooling part 3 comprises a plurality of cooling pipelines 8, and the number of the cooling pipelines 8 is equal to that of the support assemblies 6; the cooling pipeline 8 is arranged between the two support plates 601 of the support assembly 6, and the outer walls of the cooling pipeline 8 are respectively attached to the support plates 601; a plurality of jet holes 9 are formed outside the cooling pipeline 8, and the cooling pipeline 8 is communicated with the inner cavity of the external packaging armor 5 through a jet pipe. The cooling pipeline 8 is filled with low-temperature liquid nitrogen, the low-temperature liquid nitrogen is sprayed out through the spraying holes 9, flows into the space supported by the external packaging armor 5 and the supporting plate 601, diffuses the inner cavity of the whole packaging armor through the communication holes 602, carries out contact type heat exchange on the superconducting stack 7, reduces the temperature of the superconducting stack 7, and prevents the superconducting stack 7 from being damaged by high-temperature-caused transmission efficiency or even overheating. Meanwhile, the cooling pipeline 8 and the jet hole 9 can pre-cool the superconducting stack 7 before the superconducting stack 7 is electrified, so that the cable is prevented from being irrecoverable damage caused by large stress gathered by thermal expansion and cold contraction during formal cooling.
In a further optimized scheme, the inner cavity of the outer packaging armor 5 is filled with a fixing medium, and the fixing medium comprises but is not limited to epoxy resin and paraffin. The fixing medium is filled after the installation of other parts is finished, and the superconducting stacks 7 and the cooling pipelines 8 are positioned and fixed after the filling, so that the superconducting stacks 7 and the cooling pipelines 8 are prevented from being deviated after the installation, even broken, and the electrifying and refrigerating effect is influenced.
The using method comprises the following steps:
firstly, the superconducting tapes 701 are staggered and stacked according to a preset angle, the cross section of the stacked superconducting tapes 701 is a parallelogram, the superconducting stack 7 required by the invention is formed, and the outer wall of the superconducting stack 7 is coated with a protective layer. Then, the supporting plates 601 are selected according to the outer diameter of the superconducting cable, a plurality of communicating holes 602 are formed in the supporting plates 601 in an array mode, one ends of the two supporting plates 601 are fixedly connected according to a certain included angle to form supporting assemblies 6, then the fixedly connected ends of the supporting assemblies 6 are fixed on the central column 4 by the supporting assemblies 6 in a centrosymmetric mode, and the angle between the adjacent supporting assemblies 6 is matched with the angle of the superconducting stack 7.
The prepared superconducting stack 7 is clamped between the two support assemblies 6, so that two adjacent edges of a parallelogram on the interface of the superconducting stack 7 are respectively contacted with the side walls of the two support assemblies 6, and a good heat exchange effect is obtained; and then the cooling pipeline 8 provided with the jet holes 9 is clamped between the two support plates 601 of the support component 6, so that the sides of the cold area pipeline are respectively contacted with the support plates 601 at the two sides, the support plates 601 are conveniently cooled by liquid nitrogen in the cold area pipeline, and the low temperature is transmitted to the superconducting stack 7.
Sheathing an external encapsulation armor 5 on the outer side of the support frame for encapsulation, filling a liquid fixing medium into the inner cavity of the external encapsulation armor 5, and supporting and fixing the superconducting stack 7 and the cold area pipeline after the fixing medium is cooled and solidified. And finally, encapsulating the two ends of the superconducting cable, connecting the superconducting stack 7 with a power supply, and connecting the cooling pipeline 8 with liquid nitrogen, so that the installation can be finished and the superconducting cable can be used.
The high-heat-dissipation-structure superconducting cable in the stacking mode is simple and compact in structure, good in conducting effect, large in heat exchange area of the superconducting part 1, good in heat exchange effect, capable of effectively protecting and preventing the cable from being damaged due to overheating, and has strong popularization significance.
Example 2
Referring to fig. 7 to 11, the present embodiment is different from embodiment 1 in that the superconducting cable terminal of the present embodiment is provided with a connection joint assembly.
When the high-heat-dissipation-structure superconducting cable adopting the stacking mode is used, the plurality of superconducting stacks 7 are arranged in the cable and are arranged tightly, the cooling pipeline 8 is also mixed for performing pre-cooling and formal cooling on the superconducting stacks 7, and the external packaging armor 5 is packaged outside the cable for protecting the superconducting cable, so that a conventional cable joint cannot be used in the application, the joint needs to fixedly connect the central column 4, the support of the central column to the superconducting stacks 7 is maintained, and the strength of the superconducting stacks 7 is maintained; the cooling pipeline 8 needs to be hermetically connected, so that the situation that liquid nitrogen at a position far away from a liquid nitrogen source cannot reach due to leakage of the liquid nitrogen from a joint is prevented; the superconducting stacks 7 also need to be electrically connected, and the superconducting stacks 7 are connected on the premise of not influencing the conductivity of the superconducting stacks, so that the power transmission purpose of the superconducting cable is realized; the external encapsulated armors 5 are also required to be connected in a sealing manner, so that cooled liquid nitrogen is prevented from leaking out of the superconducting cable, the environment is influenced, the recovery efficiency of the liquid nitrogen is reduced, and the power transmission cost is increased. Therefore, the high heat dissipation structure superconducting cable in the stacking mode needs a special connecting joint component.
The connection joint assembly comprises a center column joint 11, a superconducting stack joint 12, a cooling pipeline joint 13 and an external packaging joint 14, and the support assembly is not provided with joints and is not connected because the connection of the support assembly does not affect the function of the support assembly.
The center post joint 11 comprises a first joint 1101 and a second joint 1102, the first joint 1101 and the second joint 1102 are in threaded connection through an outer nut 1103, the outer nut 1103 is rotated to enable the first joint 1101 and the second joint 1102 to move in the opposite direction or in the opposite direction at the same time, a connecting cavity is formed in the side, away from each other, of the first joint 1101 and the second joint 1102, a connecting sleeve 1104 is connected in the connecting cavity in a sliding mode, the connecting sleeve 1104 is made of elastic metal materials, the outlet of the connecting sleeve 1104 is divided into a plurality of lobes, and one ends, opposite to the two connecting sleeves 1104, are connected with return springs 1105; the cross section of the connecting cavity is in a trapezoidal structure, and the width of the outlet is longer than that of the bottom. During the use, insert the end of two central posts 4 that wait to connect respectively in connecting sleeve 1104, until inserting the most connecting sleeve 1104 bottom, then rotate cap nut 1103, make first joint 1101 and second connect 1102 to the direction motion that deviates from each other, because connect through reset spring 1105 between the connecting sleeve 1104, can not connect 1102 with first joint 1101 and second at this moment together motion, the connecting chamber of trapezoidal cross-section extrudes the tip of connecting sleeve 1104 again in the outside motion process gradually, draw close the extrusion of the petal structure of tip, with central post 4 chucking, rotate cap nut 1103, until can't rotating, can accomplish the connection to central post 4.
The superconducting stack joint 12 is required to complete the connection of the two superconducting stacks 7 without affecting the wire properties thereof. The superconducting stack joint 12 comprises two third joints 1201, an adjusting stack 1202 is connected between the two third joints 1201, the length of the adjusting stack 1202 is determined according to the length of a connecting end, two superconducting stacks 7 to be connected are respectively inserted into the third joints 1201, and then the superconducting stacks 7 are tightly fixed, so that the fixing of the superconducting stacks 7 can be completed. The material of the third joint 1201 is the same as the superconducting stack 7 in order not to affect the conductivity of the superconducting stack 7. The connection form of the third joint 1201 is a conventional connection joint of a superconducting cable, which will not be described in detail herein.
The cooling pipeline joint 13 is used for connecting two cooling pipelines 8 for conveying liquid nitrogen, the cooling pipeline joint 13 comprises two fourth joints 1301, an adjusting pipe 1302 is connected between the two fourth joints 1301, the end of the cooling pipeline 8 is inserted into one end, far away from the adjusting pipe 1302, of the fourth joint 1301, a limiting block 1303 is arranged in the fourth joint 1301, one end, facing the cooling pipeline 8, of the limiting block 1303 is hinged to a hinge rod 1304, and the other end of the limiting block 1303 is abutted to the end of the adjusting pipe 1302; the hinged rod 1304 is in a shape of a knife, the top surface of the hinged rod is hinged with the limiting block 1303, one of the other two legs in the shape of the knife is abutted to the end of the cooling pipeline 8, the other leg is abutted to the inner wall of the cooling pipeline 8, a low-temperature-resistant flexible pad is arranged between the leg abutted to the inner wall of the cooling pipeline 8 and the contact surface of the inner wall of the cooling pipeline 8, and the friction force of the rest cooling pipelines 8 is increased; when the cooling pipe 8 is inserted into the inner cavity of the fourth joint 1301, the end of the cooling pipe 8 abuts against the first leg of the hinge rod 1304, the hinge rod 1304 is deflected by the pushing of the cooling pipe 8, the other leg is contacted with the inner wall of the cooling pipe 8, and finally the cooling pipe 8 is jacked. And finally, screwing a compression nut 1305 which is in threaded connection outside the fourth joint 1301 and the fourth joint 1301, and clamping the cooling pipeline 8 and the fourth joint 1301 to prevent liquid nitrogen in the cooling pipeline 8 from leaking.
The outer packaging joint 14 comprises an outer shell 1401, the outer wall of the outer packaging armor 5 is in contact with the inner wall of the outer shell 1401, and two ends of the outer shell 1401 are respectively in threaded connection with fastening nuts 1402; an elastic sleeve 1403 is arranged at each of two ends of the outer shell 1401, the fastening nuts 1402 are connected to the elastic sleeves 1403 in a threaded mode, when the outer shell is used, the ends of the outer packaging armors 5 at the two ends extend into the elastic sleeves 1403, then the elastic sleeves 1403 are compressed by the fastening nuts 1402, and the elastic sleeves 1403 clamp the outer packaging armors 5; in order to prevent leakage of nitrogen gas between the outer armor 5 and the elastic sleeve 1403, a low-temperature seal ring is provided between the outer armor 5 and the elastic sleeve 1403.
Other using methods are the same as those in embodiment 1, and are not described herein.
In the embodiment, the connection of the cable is divided into a plurality of parts to be sequentially carried out, so that the operations of connecting, branching and the like can be rapidly and firmly carried out on the high-heat-dissipation-structure superconducting cable in the stacking mode, and the safety is high. In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (4)
1. A high heat dissipation structure superconducting cable of a stacking manner, characterized in that: comprises a support part (2), a cooling part (3) and a superconducting part (1); the cooling part (3) and the superconducting part (1) are respectively arranged in the supporting part (2);
the supporting part (2) comprises a central column (4), a plurality of supporting components (6) which are circumferentially distributed at equal intervals are fixedly connected to the outer edge of the central column (4), and the cooling part (3) is arranged in the supporting components (6); the superconducting parts (1) are arranged between two adjacent supporting assemblies (6), and the cooling parts (3) and the superconducting parts (1) are distributed at intervals;
an outer packaging armor (5) is arranged outside the supporting component (6);
the superconducting part (1) comprises a plurality of circumferentially equally-spaced superconducting stacks (7), and the number of the superconducting stacks (7) is matched with that of the supporting assemblies (6); any superconducting stack (7) is arranged between the adjacent supporting assemblies (6), and the side edges of the superconducting stack (7) are respectively attached to the two adjacent supporting assemblies (6);
the supporting assembly (6) comprises two supporting plates (601), one end of each supporting plate (601) is fixedly connected with the outer wall of the central column (4), and an included angle between the two supporting plates (601) is an acute angle; the cooling part (3) is arranged between the two support plates (601), and the inner wall of the outer packaging armor (5) is fixedly connected with one end, far away from the central column (4), of each support plate (601);
the superconducting stack (7) comprises a plurality of superconducting tapes (701), the superconducting tapes (701) are horizontally overlapped and fixedly connected, and the cross section of the finally formed superconducting stack (7) is a parallelogram; under the condition of the same area, the perimeter of the parallelogram is larger than that of the square and the rectangle, and the electrifying quantity of the superconducting cable is determined according to the sectional area, so the superconducting stack (7) with the parallelogram as the section has larger heat exchange surface area and better heat exchange effect;
the cooling part (3) comprises a plurality of cooling pipelines (8), and the number of the cooling pipelines (8) is equal to that of the support assemblies (6); the cooling pipeline (8) is arranged between the two support plates (601) of the support component (6), and the outer walls of the cooling pipeline (8) are respectively attached to the support plates (601).
2. The superconducting cable of a stacked high heat dissipation structure according to claim 1, wherein: a plurality of communicating holes (602) are arranged on the supporting plate (601) in an array manner.
3. The superconducting cable of a stacked high heat dissipation structure according to claim 1, wherein: a plurality of jet holes (9) are formed in the outer portion of the cooling pipeline (8), and the cooling pipeline (8) is communicated with the inner cavity of the outer packaging armor (5) through the jet holes (9).
4. The superconducting cable of a high heat dissipation structure according to claim 1, wherein: the inner cavity of the external packaging armor (5) is filled with a fixing medium, and the fixing medium is epoxy resin or paraffin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110972516.2A CN113674914B (en) | 2021-08-24 | 2021-08-24 | High heat dissipation structure superconducting cable of stacking mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110972516.2A CN113674914B (en) | 2021-08-24 | 2021-08-24 | High heat dissipation structure superconducting cable of stacking mode |
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