CN112436301A - Connection structure of low-temperature insulation superconducting cable and terminal - Google Patents
Connection structure of low-temperature insulation superconducting cable and terminal Download PDFInfo
- Publication number
- CN112436301A CN112436301A CN201910735805.3A CN201910735805A CN112436301A CN 112436301 A CN112436301 A CN 112436301A CN 201910735805 A CN201910735805 A CN 201910735805A CN 112436301 A CN112436301 A CN 112436301A
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- Prior art keywords
- terminal
- conductor
- superconducting cable
- cable
- flexible
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/68—Connections to or between superconductive connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
Abstract
The invention relates to the technical field of low-temperature insulating superconducting cables, in particular to a connecting structure of a low-temperature insulating superconducting cable and a terminal. The cable conductor and the current lead are connected through the soft conductor, so that the connection between the low-temperature insulating superconducting cable and the terminal is realized, when the low-temperature insulating superconducting cable and the terminal generate displacement due to temperature change during working, the soft conductor can generate bending deformation under the action of the displacement of the low-temperature insulating superconducting cable and the terminal, the compensation of the displacement of the low-temperature insulating superconducting cable and the displacement of the terminal is realized, and the safety and the effectiveness of the connection between the low-temperature insulating superconducting cable and the terminal are ensured.
Description
Technical Field
The invention relates to the technical field of low-temperature insulating superconducting cables, in particular to a connecting structure of a low-temperature insulating superconducting cable and a terminal.
Background
The terminal of the conventional plastic insulation power cable is arranged at the end part of the cable, and a cable conductor is led out from a connecting wire rod in the terminal. The cable conductor of the conventional oil-filled cable is led out after being connected with the outgoing line rod through the liner tube in the terminal.
The low-temperature insulation superconducting cable adopts low-temperature medium insulation, the superconducting conductor, the insulation and the superconducting shield work in a low-temperature environment (liquid nitrogen), and the cable conductor is connected with a current lead in a terminal and then led out. When the cable is lowered from normal temperature to liquid nitrogen temperature, the cable conductor has large shrinkage, so that the cable conductor generates displacement. The low-temperature insulation superconducting cable is soaked in liquid nitrogen in an insulation mode, in order to improve the insulation pressure-resistant strength, the soaked insulation liquid nitrogen works in a pressure state, and along with the rise of pressure, a vacuum heat insulation flexible pipe which is arranged outside the insulation and has the vacuum heat insulation effect extends, so that a terminal or a cable is displaced. The conventional connection mode of the cable and the terminal does not have the function of displacement compensation and cannot be suitable for the connection of the low-temperature insulation superconducting cable and the terminal.
Disclosure of Invention
The present invention is directed to a connection structure for a low temperature superconducting cable and a terminal, which can compensate for a displacement of the low temperature superconducting cable and the terminal caused by a temperature change during operation, so as to overcome the above-mentioned drawbacks of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: a connection structure of a low temperature dielectric superconducting cable and a terminal includes a flexible conductor having one end connected to a cable conductor in the low temperature dielectric superconducting cable and the other end connected to a current lead in the terminal, the flexible conductor having a bending deformation capability.
Preferably, the two ends of the soft conductor are respectively provided with a first wiring terminal and a second wiring terminal, the first wiring terminal is connected with the cable conductor, and the second wiring terminal is connected with the current lead.
Preferably, both ends of the flexible conductor are crimped with the first connection terminal and the second connection terminal, respectively.
Preferably, the flexible conductor is made of a plurality of wires stranded or braided.
Preferably, the wire is copper wire or galvanized copper wire or silver-plated copper wire.
Preferably, the flexible cable further comprises a flexible metal tubular member, the flexible conductor is sleeved in the flexible metal tubular member, and the cross section of the flexible metal tubular member is in a circular ring shape.
Preferably, both ends of the flexible metal tubular member are connected to both ends of the flexible conductor, respectively.
Preferably, the flexible metal tubular member is connected at both ends to the cable conductor and the current lead, respectively.
Preferably, the flexible metal tubular member is a flexible corrugated tube made of a metal material.
Preferably, the flexible metal tubular member is a tubular member formed by spirally winding a metal wire or a metal strip.
Compared with the prior art, the invention has the remarkable progress that:
the connection structure of the low-temperature insulating superconducting cable and the terminal realizes the connection of the low-temperature insulating superconducting cable and the terminal by connecting the cable conductor and the current lead through the soft conductor, and when the low-temperature insulating superconducting cable and the terminal generate displacement due to temperature change during working, the soft conductor can generate bending deformation under the action of the displacement of the low-temperature insulating superconducting cable and the terminal, so that the compensation of the displacement of the low-temperature insulating superconducting cable and the terminal is realized, and the safety and the effectiveness of the connection of the low-temperature insulating superconducting cable and the terminal are ensured.
Drawings
Fig. 1 is a schematic view of a connection structure of a cryogenic insulating superconducting cable and a terminal according to an embodiment of the present invention.
Wherein the reference numerals are as follows:
1. flexible conductor 2, cable conductor
3. Current lead 4 and first connecting terminal
5. Second connection terminal 6, flexible metal tubular member
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, an embodiment of a connection structure of a low temperature dielectric superconducting cable and a terminal of the present invention. The connection structure of the low temperature dielectric superconducting cable and the terminal of the present embodiment includes a flexible conductor 1, one end of the flexible conductor 1 is connected to a cable conductor 2 in the low temperature dielectric superconducting cable, the other end of the flexible conductor 1 is connected to a current lead 3 in the terminal, and the flexible conductor 1 has a bending deformation capability.
The connection structure of the low-temperature insulating superconducting cable and the terminal of the embodiment connects the cable conductor 2 and the current lead 3 through the soft conductor 1 to realize the connection of the low-temperature insulating superconducting cable and the terminal, when the low-temperature insulating superconducting cable and the terminal generate displacement due to temperature change during working, the soft conductor 1 can generate bending deformation under the action of the displacement of the low-temperature insulating superconducting cable and the terminal to realize the compensation of the displacement of the low-temperature insulating superconducting cable and the terminal, thereby ensuring the safety and the effectiveness of the connection of the low-temperature insulating superconducting cable and the terminal.
In this embodiment, it is preferable that both ends of the flexible conductor 1 are respectively provided with a first connection terminal 4 and a second connection terminal 5. The first connection terminal 4 is connected to the cable conductor 2, whereby the connection of the flexible conductor 1 to the cable conductor 2 is achieved. The second connection terminal 5 is connected to the current lead 3, so that the connection of the flexible conductor 1 to the current lead 3 is achieved. Connect cable conductor 2 and current lead 3 respectively through first binding post 4 and second binding post 5, realize the electric connection between soft conductor 1 and cable conductor 2, the current lead 3, can current heavy current to guarantee that the connection between soft conductor 1 and cable conductor 2, the current lead 3 is reliable.
In this embodiment, the connection mode between the two ends of the flexible conductor 1 and the first and second connection terminals 4 and 5 is not limited. Preferably, both ends of the flexible conductor 1 are respectively connected with the first connecting terminal 4 and the second connecting terminal 5 in a crimping manner, so that the flexible conductor has the advantages of convenience in connection and good stability.
In this embodiment, the flexible conductor 1 may be formed by twisting or weaving a plurality of wires, so as to achieve good bending deformability. The wire has a conductive capability, and the material of the wire is not limited, and preferably, the wire can be a copper wire, a zinc-plated copper wire, or a silver-plated copper wire.
The electric field concentration can be caused by the bulge generated when the flexible conductor 1 is bent, and particularly, when the flexible conductor 1 is formed by twisting or weaving wires, burrs may protrude or a single wire is bulged when the flexible conductor is bent, so that a more obvious electric field concentration phenomenon can be caused. To avoid this phenomenon, preferably, the connection structure of the low temperature insulating superconducting cable and the terminal of the present embodiment further includes a flexible metal tubular member 6, an inner diameter of the flexible metal tubular member 6 is larger than an outer diameter of the flexible conductor 1, the flexible conductor 1 is sleeved in the flexible metal tubular member 6, the flexible metal tubular member 6 also has a bending deformation capability, and can be bent together with the flexible conductor 1 to compensate for displacement, a cross-sectional shape of the flexible metal tubular member 6 is a circular ring shape, which can function as a uniform electric field, and well eliminate electric field concentration generated by the protrusion of the outer surface of the flexible conductor 1 when a voltage is applied, thereby preventing the electric field concentration generated by the connection structure of the low temperature insulating superconducting cable and the terminal of the present embodiment during operation, and ensuring good working performance of the connection structure.
In this embodiment, in order to ensure that no electric field concentration occurs in the entire length direction of the flexible conductor 1, it is preferable that the entire flexible conductor 1 is located inside the flexible metal tubular member 6. In one embodiment, both ends of the flexible metal tubular member 6 may be connected to both ends of the flexible conductor 1, respectively, so as to realize that the flexible conductor 1 is entirely located inside the flexible metal tubular member 6. In another embodiment, the two ends of the flexible metal tubular member 6 can be connected to the cable conductor 2 and the current lead 3, respectively, so that the flexible metal tubular member 6 can be electrically connected to the flexible conductor 1, and the flexible conductor 1 is entirely located inside the flexible metal tubular member 6.
In the present embodiment, the form of the flexible metal tubular member 6 is not limited. In one embodiment, the flexible metal tubular member 6 may be a flexible corrugated tube made of metal material, and the metal flexible corrugated tube can achieve good bending deformation capability and uniform electric field action. In another embodiment, the flexible metal tubular member 6 may be a tubular member formed by spirally winding a metal wire or a metal tape, and also can achieve good bending deformability and uniform electric field effect.
In summary, in the connection structure of the low-temperature insulating superconducting cable and the terminal of the embodiment, the flexible conductor 1 generates bending deformation under the action of displacement of the low-temperature insulating superconducting cable and the terminal, so that the displacement of the low-temperature insulating superconducting cable and the terminal is compensated, and the connection of the low-temperature insulating superconducting cable and the terminal can be ensured to be safe and effective; the flexible metal tubular part 6 sleeved outside the flexible conductor 1 plays a role in uniform electric field, so that electric field concentration caused by the fact that the outer surface of the flexible conductor 1 is convex when voltage is applied can be eliminated, and good working performance of the connection structure is guaranteed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A connection structure of a low temperature dielectric superconducting cable and a terminal, characterized by comprising a flexible conductor (1), one end of the flexible conductor (1) is connected with a cable conductor (2) in the low temperature dielectric superconducting cable, and the other end is connected with a cable lead (3) in the terminal, and the flexible conductor (1) has bending deformation capability.
2. The connection structure of the cryogenic insulation superconducting cable and the terminal according to claim 1, wherein a first connection terminal (4) and a second connection terminal (5) are respectively provided at both ends of the flexible conductor (1), the first connection terminal (4) is connected with the cable conductor (2), and the second connection terminal (5) is connected with the cable lead (3).
3. The connection structure of the cryogenic insulation superconducting cable to the terminal according to claim 2, wherein both ends of the soft conductor (1) are crimped with the first connection terminal (4) and the second connection terminal (5), respectively.
4. The connection structure of the cryogenic insulation superconducting cable to the terminal according to claim 1, wherein the soft conductor (1) is made by twisting or braiding a plurality of wires.
5. The connection structure of the cryogenic insulating superconducting cable to the terminal according to claim 4, wherein the lead is a copper wire or a zinc-plated copper wire or a silver-plated copper wire.
6. The connection structure of the cryogenic insulation superconducting cable and the terminal according to claim 1, further comprising a flexible metal tubular member (6), wherein the flexible conductor (1) is housed in the flexible metal tubular member (6), and the flexible metal tubular member (6) has a circular cross-sectional shape.
7. The connection structure of the cryogenic insulating superconducting cable to the terminal according to claim 6, wherein both ends of the flexible metal tubular member (6) are connected to both ends of the flexible conductor (1), respectively.
8. The connection structure of the cryogenic insulating superconducting cable to the terminal according to claim 6, wherein both ends of the flexible metal tubular member (6) are connected to the cable conductor (2) and the cable lead (3), respectively.
9. The connection structure of the cryogenic insulating superconducting cable to the terminal according to claim 6, wherein the flexible metal tubular member (6) is a flexible corrugated tube made of a metal material.
10. The connection structure of the cryogenic insulating superconducting cable to the terminal according to claim 6, wherein the flexible metal tubular member (6) is a tubular member (6) spirally wound with a metal wire or a metal tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735805.3A CN112436301A (en) | 2019-08-09 | 2019-08-09 | Connection structure of low-temperature insulation superconducting cable and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735805.3A CN112436301A (en) | 2019-08-09 | 2019-08-09 | Connection structure of low-temperature insulation superconducting cable and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112436301A true CN112436301A (en) | 2021-03-02 |
Family
ID=74689756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735805.3A Pending CN112436301A (en) | 2019-08-09 | 2019-08-09 | Connection structure of low-temperature insulation superconducting cable and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112436301A (en) |
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2019
- 2019-08-09 CN CN201910735805.3A patent/CN112436301A/en active Pending
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