CN216929557U - Cable joint connection structure - Google Patents
Cable joint connection structure Download PDFInfo
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- CN216929557U CN216929557U CN202220506824.6U CN202220506824U CN216929557U CN 216929557 U CN216929557 U CN 216929557U CN 202220506824 U CN202220506824 U CN 202220506824U CN 216929557 U CN216929557 U CN 216929557U
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Abstract
The utility model relates to a cable joint connecting structure, which is characterized in that a power cable is firstly connected with a stress cone at the joint of a cable joint and the power cable under the cable joint, a shielding layer of the power cable is connected and conducted with a semi-conducting layer of the stress cone, and the stress cone is then connected with the cable joint. When the cable joint outer semi-conducting layer and the power cable outer semi-conducting layer are not at the same grounding point (electric isolation), when the grounding points at two ends have a certain distance, the cable joint outer semi-conducting layer and the power cable outer semi-conducting layer are regarded as non-equipotential, and when extreme conditions (single-phase grounding short circuit and the like) occur on a line, the cable joint outer semi-conducting layer and the power cable outer semi-conducting layer are isolated from each other, so that the cable joint outer semi-conducting layer and the power cable outer semi-conducting layer cannot become mutually communicated current paths, and the damage cannot be expanded. The technical problem that the outer semi-conducting layer of the cable joint and the outer semi-conducting layer of the power cable are equipotential in the prior art is solved.
Description
Technical Field
The embodiment of the utility model relates to a connector connecting structure, in particular to a cable connector connecting structure.
Background
In the conventional cable joint connection structure, as shown in fig. 1, when the cable joint outer semiconductive layer and the cable shielding layer, that is, the semiconductive layer outside the power cable, are at the same grounding point, the cable joint outer semiconductive layer and the cable shielding layer, that is, the semiconductive layer outside the power cable (0V), and when an extreme condition (such as a single-phase ground short circuit) occurs in a line, the cable joint outer semiconductive layer and the cable shielding layer, that is, the semiconductive layer outside the power cable, become mutually communicated current paths, so that the damage condition is enlarged, and the cable joint or the cable is easily damaged.
SUMMERY OF THE UTILITY MODEL
An object of an embodiment of the present invention is to provide a cable joint connection structure capable of solving the potential technical problem of the outer semiconductive layer of a cable joint and the outer semiconductive layer of a power cable, which is a cable shield layer.
In order to achieve the above object, an embodiment of the present invention provides a cable joint connection structure, including:
a cable joint;
the power cable is fixedly connected in the cable joint;
and a semi-conducting layer outside the cable joint and a semi-conducting layer outside the power cable are vertically staggered at the joint of the cable joint and the power cable below the cable joint and are connected through an insulating sleeve.
Furthermore, the conductor on the power cable is fixed with a connecting block arranged in the cable joint; the insulating layer of the power cable is attached to the insulating layer on the cable joint through a stress cone arranged in the cable joint.
Further, the cable joint further comprises:
an inner semiconductive layer provided inside the cable joint above the stress cone;
the insulating layer on the cable joint is arranged outside the inner semi-conducting layer;
an outer semiconducting layer is provided on the outside of the insulating layer on the cable joint.
Furthermore, a plurality of grounding eyes are arranged on the outer side of the insulating layer on the cable joint and below the cable joint along the circumference of the cable joint.
Further, the inner semi-conducting layer and the outer semi-conducting layer are made of silicon rubber.
Further, the insulating layer on the cable joint is insulating rubber.
Further, the insulating layer of the power cable is made of insulating rubber; the semi-conducting layer of the power cable is arranged below the insulating layer of the power cable.
Furthermore, the insulating oversleeve is made of silicon rubber.
Furthermore, the cable joint is a T-shaped cable joint.
Further, an annular chamfer is arranged at the bottom of the cable joint.
Compared with the prior art, the embodiment of the utility model adopts the structure that the power cable is connected with the stress cone at the joint of the cable joint and the power cable below the cable joint, the shielding layer of the power cable is connected and conducted with the semi-conducting layer of the stress cone, and the stress cone is connected with the cable joint, so that when the outer semi-conducting layer of the cable joint and the outer semi-conducting layer of the power cable are not at the same grounding point (electrical isolation), and when the grounding points at two ends are at a certain distance, the outer semi-conducting layer of the cable joint and the outer semi-conducting layer of the power cable are regarded as non-equipotential, and when the line has extreme conditions (single-phase grounding short circuit and the like), the outer semi-conducting layer of the cable joint and the outer semi-conducting layer of the power cable are isolated from each other, so that the outer semi-conducting layer of the cable joint and the outer semi-conducting layer of the power cable cannot become a mutual current path, and the damage cannot be enlarged. Meanwhile, in order to ensure that a mutually communicated current path does not occur, an insulating sleeve is added at the tail part of the cable end of the connector, and the thickness of the insulating layer at the cable end is increased, so that the outer semi-conducting layer of the cable connector is isolated from the outer semi-conducting layer of the power cable, and the cable connector or the power cable can bear larger overvoltage and induced voltage, and is protected from being damaged, and the safety of the line is ensured. The technical problem that the outer semi-conducting layer of the cable joint and the outer semi-conducting layer of the power cable are equipotential in the prior art is solved.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration of the present invention;
FIG. 2 is a schematic view of the utility model in full section.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
Embodiments of the present invention relate to a cable joint connection structure, as shown in fig. 2,
the cable joint 1 is used for fixedly connecting the power cable 2, so in the present embodiment, the power cable 2 is fixedly connected in the cable joint 1;
below the cable joint 1, at the joint of the cable joint 1 and the power cable 2, the cable joint outer semiconductive layer 3 and the power cable outer semiconductive layer 4 are vertically displaced and then connected by an insulating sleeve 5.
In this embodiment, when the outer semi-conductive layer 3 of the cable joint and the outer semi-conductive layer 4 of the power cable are not at the same grounding point (electrically isolated), and the grounding points at both ends are at a certain distance, the outer semi-conductive layer 3 of the cable joint and the outer semi-conductive layer 4 of the power cable are regarded as non-equipotential, and when an extreme condition (single-phase grounding short circuit, etc.) occurs on a line, the outer semi-conductive layer 3 of the cable joint and the outer semi-conductive layer 4 of the power cable are isolated from each other, and cannot become a current path communicating with each other, and the damage cannot be enlarged. Meanwhile, in order to ensure that a mutually communicated current path does not occur, the tail part of the cable end of the connector is additionally provided with the insulating sleeve 5, and the thickness of the insulating layer of the cable end is increased, so that the outer semi-conducting layer 3 of the cable connector is isolated from the outer semi-conducting layer 4 of the power cable, and the cable connector or the power cable can bear large overvoltage and induction voltage, can be protected from being damaged, and can ensure the safety of the line. The technical problem that the semi-conducting layer 3 outside the cable joint and the semi-conducting layer 4 outside the power cable are equipotential in the prior art is solved.
In order to achieve the above technical effects, as shown in fig. 2, the conductor 6 on the power cable 2 is fixed with a connection block 7 disposed in the cable joint 1; the insulation layer 8 of the power cable is attached to the insulation layer 10 on the cable joint by means of a stress cone 9 provided in the cable joint 1. Thus, no gap is reserved between the insulating layer 8 of the power cable and the insulating layer 10 on the cable joint, and the insulating performance between the insulating layer 8 of the power cable and the insulating layer 10 on the cable joint can be guaranteed.
In order to achieve the above technical effects, as shown in fig. 2, the cable connector 1 further includes:
an inner semiconductive layer 11 is arranged above the stress cone 9 and inside the cable joint 1;
the insulation layer 10 on the cable joint is arranged outside the inner semiconductive layer 11;
an outer semiconducting layer 12, the outer semiconducting layer 12 being arranged outside the insulating layer 10 on the cable joint.
The structure can ensure that the cable joint 1 and the power cable 2 are firmly connected. Below the cable joint 1, at the joint of the cable joint 1 and the power cable 2, the power cable 2 is firstly connected with the stress cone 9, the shielding layer of the power cable is connected and conducted with the semi-conducting layer of the stress cone, the stress cone 9 is further connected with the cable joint 1, so that when the semi-conducting layer 3 outside the cable joint and the semi-conducting layer 4 outside the power cable are not at the same grounding point (electrical isolation), when the grounding points at two ends are at a certain distance, the cable joint outer semi-conducting layer 3 and the power cable outer semi-conducting layer 4 are regarded as non-equipotential, when an extreme condition (single-phase grounding short circuit and the like) occurs on a line, the cable joint outer semi-conducting layer 3 and the power cable outer semi-conducting layer 4 are mutually isolated, and cannot become mutually communicated current paths, and the damage cannot be enlarged.
In order to achieve the above technical effect, as shown in fig. 2, a plurality of grounding eyes 13 are provided along the circumference of the cable joint 1 outside the insulating layer 10 on the cable joint and below the cable joint 1. The grounding eye 13 is used for connecting a grounding wire.
In order to achieve the above technical effects, as shown in fig. 2, the material of the inner and outer semiconductive layers 11 and 12 is silicon rubber.
In order to achieve the above technical effects, as shown in fig. 2, the insulation layer 10 on the cable joint is made of insulation rubber.
In order to achieve the above technical effects, as shown in fig. 2, the material of the insulating layer 8 of the power cable is insulating rubber; the outer semiconducting layer of the power cable is arranged below the insulating layer 8 of said power cable.
In order to achieve the above technical effects, as shown in fig. 2, the insulating sleeve is made of silicon rubber.
In order to achieve the above technical effects, as shown in fig. 2, the cable connector 1 is a T-shaped cable connector.
In order to achieve the above technical effects, as shown in fig. 2, an annular chamfer 14 is provided at the bottom of the cable joint 1.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of practicing the utility model, and that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model in practice.
Claims (10)
1. A cable joint connection structure characterized by comprising:
a cable joint;
the power cable is fixedly connected in the cable joint;
and at the joint of the cable joint and the power cable, the cable joint outer semi-conductive layer and the power cable outer semi-conductive layer are vertically staggered and connected through an insulating sleeve.
2. The cable head connection structure according to claim 1, wherein the conductor of the power cable is fixed to a connection block provided in the cable head; the insulating layer of the power cable is attached to the insulating layer on the cable joint through a stress cone arranged in the cable joint.
3. The cable splice connection structure of claim 2, wherein said cable splice further comprises:
an inner semiconductive layer provided inside the cable joint above the stress cone;
the insulating layer on the cable joint is arranged outside the inner semi-conducting layer;
an outer semiconducting layer is provided on the outside of the insulating layer on the cable joint.
4. The cable head connection structure according to claim 1, wherein a plurality of grounding eyes are provided along a circumference of the cable head below the cable head on an outer side of an insulating layer on the cable head.
5. The cable joint connection structure according to claim 3, wherein the material of the inner and outer semiconductive layers is silicone rubber.
6. The cable joint connection structure according to claim 3, wherein the insulating layer on the cable joint is an insulating rubber.
7. The cable joint connection structure according to claim 2, wherein the material of the insulating layer of the power cable is an insulating rubber; the semi-conducting layer of the power cable is arranged below the insulating layer of the power cable.
8. The cable joint connection structure according to claim 1, wherein the insulating sleeve is made of silicone rubber.
9. The cable connector connection structure according to claim 1, wherein the cable connector is a T-shaped cable connector.
10. The cable head connection structure according to claim 9, wherein an annular chamfer is provided at a bottom of the cable head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220506824.6U CN216929557U (en) | 2022-03-09 | 2022-03-09 | Cable joint connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220506824.6U CN216929557U (en) | 2022-03-09 | 2022-03-09 | Cable joint connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216929557U true CN216929557U (en) | 2022-07-08 |
Family
ID=82225557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220506824.6U Active CN216929557U (en) | 2022-03-09 | 2022-03-09 | Cable joint connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216929557U (en) |
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2022
- 2022-03-09 CN CN202220506824.6U patent/CN216929557U/en active Active
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