CN211046435U - Cable welding head with different cross sections connected - Google Patents
Cable welding head with different cross sections connected Download PDFInfo
- Publication number
- CN211046435U CN211046435U CN202020025943.0U CN202020025943U CN211046435U CN 211046435 U CN211046435 U CN 211046435U CN 202020025943 U CN202020025943 U CN 202020025943U CN 211046435 U CN211046435 U CN 211046435U
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- cable
- thick
- thin
- layer
- welded
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- 238000003466 welding Methods 0.000 title claims abstract description 6
- 239000004020 conductor Substances 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 230000004927 fusion Effects 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
The utility model discloses a cable welding head with different cross-section connections, which comprises a thick cable, a thin cable and an insulation compensation gasket; an insulation compensation gasket is arranged at the joint of the thick cable and the thin cable; one side of the thin cable inner conductor is welded to the thick cable inner conductor, and one sides of the thin cable insulating layer, the thin cable shielding layer and the thin cable armor layer are welded to the insulating compensation gasket; the inner insulating layer of the thick cable is welded on the insulating compensation gasket, and one sides of the thick cable shielding layer and the thick cable armor layer are provided with extending parts; one side of the extension part of the thick cable shielding layer is welded on the extension part of the thin cable shielding layer, and one side of the extension part of the thick cable armor layer is welded on the extension part of the thin cable armor layer. The utility model discloses a cable fusion splice reduces or eliminates junction ladder electric capacity's influence through setting up insulating compensation gasket in the butt fusion, reduces the reflection coefficient of this department that from this forms, carries out high anti compensation.
Description
Technical Field
The utility model relates to a cable equipment field especially relates to a cable fusion splice that different cross-sections are connected.
Background
With the continuous development of the social industry, the demand for power is increasing, and a large number of power cables are used in the power transmission process, wherein the power cables are cable products used for transmitting and distributing high-power electric energy in a main line of a power system, and the power cables include power cables of 10-110 kV and above various voltage levels and various insulation levels.
Although the intermediate joint is the most prone to failure of a cable line, the intermediate joint is inevitably used in a power system, the diameters of the inner conductor and the outer conductor of the cable fusion joint connected with different cross sections are different, so that the inner conductor and the outer conductor of the cable fusion joint have the condition of sudden change in the same direction, a step capacitor is formed between the conductors, the impedance of the connection part is reduced due to the existence of the step capacitor, and reflection is formed at the position with uneven impedance.
SUMMERY OF THE UTILITY MODEL
The objective of the present invention is to provide a cable fusion splice that reduces or eliminates the influence of step capacitance at the joint, reduces the reflection coefficient of the joint formed thereby, and performs high impedance compensation on different cross-section connections.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: a cable fusion joint with different cross sections for connection comprises a thick cable, a thin cable and an insulation compensation gasket; the thick cable sequentially comprises a thick cable inner conductor, a thick cable insulating layer, a thick cable shielding layer and a thick cable armor layer from inside to outside; the thin cable sequentially comprises a thin cable inner conductor, a thin cable insulating layer, a thin cable shielding layer and a thin cable armor layer from inside to outside; an insulation compensation gasket is arranged at the joint of the thick cable and the thin cable; one side of the thin cable inner conductor is welded to the thick cable inner conductor, and one sides of the thin cable insulating layer, the thin cable shielding layer and the thin cable armor layer are welded to the insulating compensation gasket; the inner insulating layer of the thick cable is welded on the insulating compensation gasket, and one sides of the thick cable shielding layer and the thick cable armor layer are provided with extending parts; one side of the extension part of the thick cable shielding layer is welded on the thin cable shielding layer, and one side of the extension part of the thick cable armor layer is welded on the thin cable armor layer.
Furthermore, the welding position of the thin cable inner conductor and the thick cable inner conductor is superposed with the axis of each cable; the outer diameter of the insulation compensation gasket is equal to the outer diameter of the thick cable insulation layer, and the inner diameter of the insulation compensation gasket is equal to the inner diameter of the thin cable inner conductor.
Still further, the thin cable is welded on the upper portion or the lower portion of the thick cable, the outer diameter of the insulation compensation gasket is equal to the outer diameter of the insulation layer of the thick cable, and the inner diameter of the insulation compensation gasket is equal to the inner diameter of the inner conductor of the thin cable.
Furthermore, the thickness of the insulation compensation gasket is in direct proportion to the step capacitance between the two groups of cables.
To sum up the utility model discloses following beneficial effect has: the utility model discloses a cable fusion splice reduces or eliminates junction ladder electric capacity's influence through setting up insulating compensation gasket in the butt fusion, reduces the reflection coefficient of this department that from this forms, carries out high anti compensation.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.
Referring to fig. 1 and 2, a cable fusion joint with different cross-section connections includes a thick cable 1, a thin cable 2, and an insulation compensation pad 3; the thick cable 1 sequentially comprises a thick cable inner conductor 11, a thick cable insulating layer 12, a thick cable shielding layer 13 and a thick cable armor layer 14 from inside to outside; the thin cable 2 comprises a thin cable inner conductor 21, a thin cable insulating layer 22, a thin cable shielding layer 23 and a thin cable armor layer 24 from inside to outside in sequence; an insulation compensation gasket 3 is arranged at the joint of the thick cable 1 and the thin cable 2; one side of the thin cable inner conductor 21 is welded to the thick cable inner conductor 11, and one sides of the thin cable insulating layer 22, the thin cable shielding layer 23 and the thin cable armor layer 24 are welded to the insulating compensation gasket 3; the thick cable inner insulating layer 12 is welded on the insulating compensation gasket 3, and an extending part is arranged on one side of the thick cable shielding layer 13 and one side of the thick cable armor layer 14; the thick cable shield has an extension 15 welded to the thin cable shield 23, and the thick cable sheath has an extension 16 welded to the thin cable sheath 24.
The utility model relates to an embodiment: the welding position of the thin cable inner conductor 21 and the thick cable inner conductor 11 is superposed with the respective cable axes; the outer diameter of the insulation compensation gasket 3 is equal to the outer diameter of the thick cable insulation layer 12, the inner diameter of the insulation compensation gasket 3 is equal to the inner diameter of the thin cable inner conductor 11, and the arrangement is convenient to process and assemble.
The utility model discloses another kind of embodiment: the thin cable 2 is welded on the upper part or the lower part of the thick cable 1, the outer diameter of the insulation compensation gasket 3 is equal to the outer diameter of the insulation layer 12 of the thick cable, and the inner diameter of the insulation compensation gasket 3 is equal to the inner diameter of the inner conductor 11 of the thin cable.
The thickness of the insulating compensation spacer 3 is proportional to the step capacitance between the two sets of cables.
The above embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the restriction on any form, and any person who knows commonly in the technical field can use the present invention to make the equivalent embodiment of local change or modification without departing from the technical features of the present invention.
Claims (4)
1. The utility model provides a cable fusion splice of different cross-section connections which characterized in that: the cable comprises a thick cable, a thin cable and an insulation compensation gasket; the thick cable sequentially comprises a thick cable inner conductor, a thick cable insulating layer, a thick cable shielding layer and a thick cable armor layer from inside to outside; the thin cable sequentially comprises a thin cable inner conductor, a thin cable insulating layer, a thin cable shielding layer and a thin cable armor layer from inside to outside; an insulation compensation gasket is arranged at the joint of the thick cable and the thin cable; one side of the thin cable inner conductor is welded to the thick cable inner conductor, and one sides of the thin cable insulating layer, the thin cable shielding layer and the thin cable armor layer are welded to the insulating compensation gasket; the inner insulating layer of the thick cable is welded on the insulating compensation gasket, and one sides of the thick cable shielding layer and the thick cable armor layer are provided with extending parts; one side of the extension part of the thick cable shielding layer is welded on the thin cable shielding layer, and one side of the extension part of the thick cable armor layer is welded on the thin cable armor layer.
2. A fusion joint for cables connected in different cross-sections according to claim 1, wherein: the welding position of the thin cable inner conductor and the thick cable inner conductor is superposed with the axis of each cable; the outer diameter of the insulation compensation gasket is equal to the outer diameter of the thick cable insulation layer, and the inner diameter of the insulation compensation gasket is equal to the inner diameter of the thin cable inner conductor.
3. A fusion joint for cables connected in different cross-sections according to claim 1, wherein: the thin cable is welded on the upper portion or the lower portion of the thick cable, the outer diameter of the insulation compensation gasket is equal to the outer diameter of the insulation layer of the thick cable, and the inner diameter of the insulation compensation gasket is equal to the inner diameter of the inner conductor of the thin cable.
4. A fusion joint for cables connected in different cross-sections according to any one of claims 1, 2 or 3, wherein: the thickness of the insulation compensation gasket is in direct proportion to the step capacitance between the two groups of cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020025943.0U CN211046435U (en) | 2020-01-07 | 2020-01-07 | Cable welding head with different cross sections connected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020025943.0U CN211046435U (en) | 2020-01-07 | 2020-01-07 | Cable welding head with different cross sections connected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211046435U true CN211046435U (en) | 2020-07-17 |
Family
ID=71539702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020025943.0U Expired - Fee Related CN211046435U (en) | 2020-01-07 | 2020-01-07 | Cable welding head with different cross sections connected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211046435U (en) |
-
2020
- 2020-01-07 CN CN202020025943.0U patent/CN211046435U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200717 |