Cable connection structure, linked power cable, cable termination connection structure, method for manufacturing a cable connection structure, and method for manufacturing a cable termination connection structure

Abstract

To achieve stable connection of a power cable.SOLUTION: A cable connection structure includes: a pair of power cables each having a conductor; a metallic sleeve surrounding a junction point connecting the conductors of the pair of power cables; and a metal strip crossing the sleeve. The sleeve and the conductor have an insertion hole opened up to at least a part of the conductor to cross the conductor from the outer periphery of the sleeve. The metal strip is inserted into the insertion hole from the sleeve up to the conductor to electrically connect the sleeve with the conductor.SELECTED DRAWING: Figure 2

Claims

1. A pair of power cables, each having a conductor, A metal sleeve surrounding the connection point where the conductors of the pair of power cables are connected, A metal strip intersecting the aforementioned sleeve, It has, The sleeve and the conductor have an insertion hole that extends from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor. The insertion hole penetrates from the first side wall of the sleeve to the conductor, but does not penetrate the second side wall opposite the first side wall. The metal strip is inserted into the insertion hole from the sleeve to the conductor, and electrically connects the sleeve and the conductor. Cable connection structure.

2. The insertion holes are provided in a plurality so as not to interfere with each other. The aforementioned metal strips are provided in multiple quantities so as to be inserted into each of the multiple insertion holes, All of the aforementioned multiple metal strips intersect with the central axis of the conductor. The cable connection structure according to claim 1.

3. A pair of power cables, each having a conductor, A metal sleeve surrounding the connection point where the conductors of the pair of power cables are connected, Multiple metal strips intersecting the aforementioned sleeve, It has, The sleeve and the conductor have a plurality of insertion holes that extend from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor, and are arranged so as not to interfere with each other. The plurality of metal strips are each inserted into the plurality of insertion holes from the sleeve to the conductor, All of the aforementioned metal strips intersect the central axis of the conductor and electrically connect the sleeve and the conductor. Cable connection structure.

4. The plurality of metal strips include a first metal strip and a second metal strip adjacent to each other in the axial direction of the conductor, The angle between the insertion direction of the second metal strip into the sleeve and the insertion direction of the first metal strip into the sleeve, as viewed from the axial direction of the conductor, is 20° or more and 80° or less. The cable connection structure according to claim 3.

5. The plurality of metal strips are arranged rotationally symmetrically around the central axis of the conductor when viewed from the axial direction of the conductor. The cable connection structure according to claim 3 or claim 4.

6. The plurality of metal strips are arranged such that as the position of each of the plurality of metal strips moves away from the end of the sleeve in the axial direction of the conductor, the insertion direction of each of the plurality of metal strips into the sleeve, as viewed from the axial direction of the conductor, gradually shifts in the circumferential direction of the conductor. The cable connection structure according to any one of claims 3 to 5.

7. The insertion hole penetrates from the first side wall of the sleeve through the conductor to the second side wall opposite the first side wall. The cable connection structure according to any one of claims 3 to 6.

8. The aforementioned insertion hole is formed from the outer circumference of the sleeve to a portion of the conductor, and does not penetrate the conductor. The cable connection structure according to any one of claims 3 to 6.

9. The metal strip does not protrude beyond the outer circumference of the sleeve. The cable connection structure according to any one of claims 1 to 8.

10. The sleeve is compressed in the radial direction of the conductor with the metal strip inserted into the insertion hole. The cable connection structure according to any one of claims 1 to 9.

11. The conductor in at least one of the pair of power cables has a conductive strand having an oxide film or an insulating film on its outer circumference. The metal strip penetrates at least a portion of the oxide film or the insulating film of the conductor strand. The cable connection structure according to any one of claims 1 to 10.

12. The aforementioned conductor is Multiple layers of conducting strands, each having multiple conducting strands. A water propagation suppression layer interposed between the plurality of conductive strand layers to suppress the propagation of water within the conductor, It has, The metal strip penetrates at least a portion of the water propagation suppression layer within the sleeve. The cable connection structure according to any one of claims 1 to 11.

13. The conductor has multiple layers of conductor strands, each having multiple conductor strands. Among the plurality of conductive strand layers, a pair of conductive strand layers adjacent to each other in the thickness direction are in direct contact with each other. The metal strip penetrates the plurality of conductor strand layers within the sleeve. The cable connection structure according to any one of claims 1 to 11.

14. The insertion hole has a screw groove, The metal strip is screwed into the screw groove of the insertion hole. The cable connection structure according to any one of claims 1 to 13.

15. The aforementioned insertion hole does not have screw threads. The aforementioned metal strip is configured as a metal rod that is fitted into the insertion hole. The cable connection structure according to any one of claims 1 to 13.

16. A connecting power cable comprising at least one cable connection structure according to any one of claims 1 to 15.

17. A power cable having a conductor, A metal sleeve surrounding the tip of the conductor of the power cable, A metal strip intersecting the aforementioned sleeve, An insulator tube into which the power cable, with the sleeve attached, is inserted, It has, The sleeve and the conductor have an insertion hole that extends from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor. The insertion hole penetrates from the first side wall of the sleeve to the conductor, but does not penetrate the second side wall opposite the first side wall. The metal strip is inserted into the insertion hole from the sleeve to the conductor, and electrically connects the sleeve and the conductor. Cable termination connection structure.

18. A power cable having a conductor, A metal sleeve surrounding the tip of the conductor of the power cable, Multiple metal strips intersecting the aforementioned sleeve, An insulator tube into which the power cable, with the sleeve attached, is inserted, It has, The sleeve and the conductor have a plurality of insertion holes that extend from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor, and are arranged so as not to interfere with each other. The plurality of metal strips are each inserted into the plurality of insertion holes from the sleeve to the conductor, All of the aforementioned metal strips intersect the central axis of the conductor and electrically connect the sleeve and the conductor. Cable termination connection structure.

19. The process of preparing a pair of power cables, each having a conductor, The steps include: arranging a metal sleeve so as to surround the connection point where the conductors of the pair of power cables are connected; A step of crossing a metal strip with respect to the sleeve, It has, The process of crossing the aforementioned metal strips is as follows: The sleeve and the conductor are provided with an insertion hole formed from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor, The steps include inserting the metal strip into the insertion hole from the sleeve to the conductor, and electrically connecting the sleeve and the conductor with the metal strip, It has, In the process of creating the aforementioned insertion hole, The insertion hole penetrates from the first side wall of the sleeve to the conductor, but does not penetrate the second side wall opposite the first side wall. A method for manufacturing a cable connection structure.

20. A step of preparing a pair of power cables, each having a conductor, The steps include: arranging a metal sleeve so as to surround the connection point where the conductors of the pair of power cables are connected; A step of crossing multiple metal strips with respect to the sleeve, It has, The process of crossing the aforementioned multiple metal strips is as follows: The sleeve and the conductor are provided with a plurality of insertion holes extending from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor, and the plurality of insertion holes are provided so as not to interfere with each other. The process involves inserting the plurality of metal strips into the plurality of insertion holes from the sleeve to the conductor, intersecting all of the plurality of metal strips with the central axis of the conductor, and electrically connecting the sleeve and the conductor with all of the plurality of metal strips. has A method for manufacturing a cable connection structure.

21. The process of preparing a power cable having a conductor, The steps include: arranging a metal sleeve so as to surround the tip of the conductor of the power cable; A step of crossing a metal strip with respect to the sleeve, The steps include inserting the power cable with the sleeve attached into the insulator tube, It has, The process of crossing the aforementioned metal strips is as follows: The sleeve and the conductor are provided with an insertion hole formed from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor, The steps include inserting the metal strip into the insertion hole from the sleeve to the conductor, and electrically connecting the sleeve and the conductor with the metal strip, It has, In the process of creating the aforementioned insertion hole, The insertion hole penetrates from the first side wall of the sleeve to the conductor, but does not penetrate the second side wall opposite the first side wall. A method for manufacturing a cable termination connection structure.

22. A step of preparing a power cable having a conductor, The steps include: arranging a metal sleeve so as to surround the tip of the conductor of the power cable; A step of crossing multiple metal strips with respect to the sleeve, The steps include inserting the power cable with the sleeve attached into the insulator tube, It has, The process of crossing the aforementioned multiple metal strips is as follows: The sleeve and the conductor are provided with a plurality of insertion holes extending from the outer circumference of the sleeve to at least a portion of the conductor so as to intersect with the conductor, and the plurality of insertion holes are provided so as not to interfere with each other. The process involves inserting the plurality of metal strips into the plurality of insertion holes from the sleeve to the conductor, intersecting all of the plurality of metal strips with the central axis of the conductor, and electrically connecting the sleeve and the conductor with all of the plurality of metal strips. has A method for manufacturing a cable termination connection structure.

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