CN220324156U - Connecting cable of locomotive for track traffic - Google Patents
Connecting cable of locomotive for track traffic Download PDFInfo
- Publication number
- CN220324156U CN220324156U CN202321739755.4U CN202321739755U CN220324156U CN 220324156 U CN220324156 U CN 220324156U CN 202321739755 U CN202321739755 U CN 202321739755U CN 220324156 U CN220324156 U CN 220324156U
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- China
- Prior art keywords
- central conductor
- conductor
- strand
- insulating layer
- twisting
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Links
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 88
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011112 polyethylene naphthalate Substances 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 4
- -1 polyethylene naphthalate Polymers 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000005684 electric field Effects 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 231100000053 low toxicity Toxicity 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a connecting cable of a locomotive for track traffic, comprising: the cable comprises a central conductor and an insulating layer coated on the outer side of the central conductor, wherein the central conductor is formed by twisting a plurality of strand conductors, the plurality of strand conductors are closely distributed along the circumferential direction and form a gap at the center of the central conductor, a wrapping belt layer tightly wrapped on the outer side of the central conductor is arranged between the central conductor and the insulating layer, and each strand conductor is formed by twisting a plurality of strand wires. The utility model not only provides space for bending and improves the flexibility of the cable, but also improves the compactness of the central conductor structure and the smoothness and roundness of the appearance, thereby improving the uniformity of the surface electric field during high-voltage transmission so as to improve the damage problem to the insulating layer under the overvoltage condition.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a connecting cable applied to a locomotive for track traffic.
Background
In view of the safety of rail traffic, the connecting cable used in the locomotive is comprehensively required to be low in smoke, halogen-free, low in toxicity, oil-resistant and corrosion-resistant. Meanwhile, the comprehensive application of a large number of electrified equipment brings higher requirements on softness, wear resistance, pressure resistance, high current carrying capacity and the like of locomotive connecting cables.
The existing locomotive connecting cable has relatively mature technology in the aspects of low smoke, zero halogen, low toxicity and the like, but the flexibility direction of the connecting cable has no good solution.
Disclosure of Invention
The utility model aims to provide a connecting cable of a locomotive for track traffic, which not only provides space for bending and improves flexibility of the cable, but also improves compactness of a central conductor structure and smoothness and roundness of appearance, thereby improving uniformity of a surface electric field during high-voltage transmission so as to solve the problem of damage to an insulating layer under overvoltage conditions.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a connection cable for a rail transit locomotive, comprising: the cable comprises a central conductor and an insulating layer coated on the outer side of the central conductor, wherein the central conductor is formed by twisting a plurality of strand conductors, the plurality of strand conductors are closely distributed along the circumferential direction and form a gap at the center of the central conductor, a wrapping belt layer tightly wrapped on the outer side of the central conductor is arranged between the central conductor and the insulating layer, and each strand conductor is formed by twisting a plurality of strand wires.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, every the branch strand is formed by the transposition of a plurality of tinned wire, tinned wire's diameter is 0.08mm ~0.12mm.
2. In the above scheme, the wrapping layer overlapped and wrapped on the outer side of the central conductor is a polyethylene naphthalate wrapping layer.
3. In the scheme, the overlapping rate of the wrapping tape layer wrapping is 40% -55%.
4. In the scheme, the twisting pitch diameter ratio of the plurality of strand conductors is 10-15.
5. In the scheme, the central conductor is formed by twisting 5 strand conductors.
6. In the above scheme, the insulating layer is a polyolefin insulating layer.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the connecting cable for the locomotive for track traffic has the advantages that the central conductor is formed by twisting the plurality of strand conductors, the plurality of strand conductors are closely distributed along the circumferential direction and form a gap at the center, a wrapping band layer which is closely wrapped on the outer side of the central conductor is arranged between the central conductor and the insulating layer, and the compactness of the structure of the central conductor and the smoothness and roundness of the appearance are improved through the matching of the closely distributed strand conductors and the wrapping band layer, so that the uniformity of a surface electric field during high-voltage transmission is improved to solve the problem of damage to the insulating layer under the overvoltage condition, and space is provided for bending through the gap formed in the center, so that the flexibility of the cable is improved.
Drawings
FIG. 1 is a schematic view of a connection cable of a railway vehicle in accordance with the present utility model;
fig. 2 is a schematic view showing a partial structure of a connection cable of the locomotive for track traffic according to the present utility model.
In the above figures: 1. a center conductor; 2. a tape layer; 3. an insulating layer; 4. a gap; 5. splitting the yarn; 6. a strand conductor.
Detailed Description
The present patent will be further understood by the specific examples given below, which are not intended to be limiting.
Example 1: a connection cable for a rail transit locomotive, comprising: the cable comprises a central conductor 1 and an insulating layer 3 coated on the outer side of the central conductor 1, wherein the central conductor 1 is formed by twisting a plurality of strand conductors 6, the strand conductors 6 are closely distributed along the circumferential direction and form a gap 4 at the center, a wrapping band layer 2 closely wrapped on the outer side of the central conductor 1 is arranged between the central conductor 1 and the insulating layer 3, and each strand conductor 6 is formed by twisting a plurality of strand wires 5.
Each stranding line 5 is formed by stranding a plurality of tinned copper wires, and the diameter of each tinned copper wire is 0.09mm;
the cable conductor is formed by adopting a thinner tin-plated copper conductor and compositely twisting the conductor for a plurality of times according to a certain twisting direction and a certain twisting distance, and a gap is designed in the center of the conductor, so that a certain movement space is reserved for the conductor when the cable is bent, and the flexibility of the connecting cable is improved.
The wrapping band layer 2 overlapped and wrapped on the outer side of the central conductor 1 is a polyethylene naphthalate PEN wrapping band layer;
the central conductor is provided with a high-temperature-resistant polyethylene naphthalate (PEN) wrapping layer, so that the flexibility of the connecting cable is improved, and meanwhile, the connecting cable has good heat resistance and chemical stability.
The overlapping rate of the wrapping tape layer 2 in wrapping is 45%.
The strand pitch ratio of the plurality of strand conductors 6 is 11.
The center conductor 1 is formed by twisting 5 strand conductors 6.
Example 2: a connection cable for a rail transit locomotive, comprising: the cable comprises a central conductor 1 and an insulating layer 3 coated on the outer side of the central conductor 1, wherein the central conductor 1 is formed by twisting a plurality of strand conductors 6, the strand conductors 6 are closely distributed along the circumferential direction and form a gap 4 at the center, a wrapping belt layer 2 closely wrapped on the outer side of the central conductor 1 is arranged between the central conductor 1 and the insulating layer 3, and each strand conductor 6 is formed by twisting a plurality of strand wires 5;
the central conductor is properly compressed (the compression coefficient is 0.95) so as to ensure the smoothness and the roundness of the appearance of the central conductor, ensure the compactness of the conductor and improve the uniformity of a surface electric field during high-voltage transmission, and is used for improving the damage to insulation under the overvoltage condition.
Each stranding wire 5 is formed by stranding a plurality of tinned wires with a certain stranding direction and a certain stranding distance, and the diameter of each tinned wire is 0.1mm.
The overlapping rate of the wrapping tape layer 2 in wrapping is 50%.
The strand pitch ratio of the plurality of strand conductors 6 is 13.
The center conductor 1 is formed by twisting 5 strand conductors 6 with a certain twist direction and a certain twist pitch.
The insulating layer 3 is a polyolefin insulating layer;
the insulation adopts an irradiation crosslinking polyolefin (XLPO) material meeting the international and national related standards, the long-term temperature resistance grade of XLPO is 125 ℃, the material has the characteristics of low smoke, no halogen, low toxicity, low corrosion and the like, the breakdown voltage is more than 30kV/mm, and the requirements of low smoke, no halogen, low toxicity, high strength and high withstand voltage of locomotive connecting cables are met.
Further explanation of the examples is as follows:
the purpose of the application is to provide a locomotive connecting cable, wherein the cable conductor is formed by adopting a thinner tin-plated copper conductor and compositely twisting the conductor for a plurality of times according to a certain twisting direction and a certain twisting distance, and a gap is designed in the center of the conductor, so that a certain movement space is reserved for the conductor when the cable is bent, and the flexibility of the connecting cable is improved;
the central conductor is properly compressed (the compression coefficient is 0.95) so as to ensure the smoothness and the roundness of the appearance of the central conductor, ensure the compactness of the conductor and improve the uniformity of a surface electric field during high-voltage transmission, and is used for improving the damage to insulation under the overvoltage condition;
the central conductor is provided with a high-temperature-resistant polyethylene naphthalate (PEN) wrapping layer, so that on one hand, the flexibility of the connecting cable is improved, and meanwhile, the connecting cable has good heat resistance and chemical stability;
the insulation adopts an irradiation crosslinking polyolefin (XLPO) material meeting the international and national related standards, the long-term temperature resistance grade of XLPO is 125 ℃, the material has the characteristics of low smoke, no halogen, low toxicity, low corrosion and the like, the breakdown voltage is more than 30kV/mm, and the requirements of low smoke, no halogen, low toxicity, high strength and high withstand voltage of locomotive connecting cables are met.
When the connecting cable of the locomotive for track traffic is adopted, the compactness of the structure of the central conductor and the smoothness and roundness of the appearance are improved through the matching of the strand conductors which are closely arranged and the wrapping tape layer, so that the uniformity of a surface electric field during high-voltage transmission is improved to solve the problem of damage to an insulating layer under an overvoltage condition, and space is provided for bending through a gap formed in the center, so that the flexibility of the cable is improved.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.
Claims (7)
1. A connection cable for a rail transit locomotive, comprising: the center conductor (1) and cladding in insulating layer (3) in the outside of center conductor (1), its characterized in that: the central conductor (1) is formed by twisting a plurality of strand conductors (6), the plurality of strand conductors (6) are closely distributed along the circumferential direction and form a gap (4) at the center, a wrapping band layer (2) tightly wrapped on the outer side of the central conductor (1) is arranged between the central conductor (1) and the insulating layer (3), and each strand conductor (6) is formed by twisting a plurality of strand wires (5).
2. The connection cable for a rail transit locomotive of claim 1, wherein: each stranding line (5) is formed by stranding a plurality of tinned copper wires, and the diameter of each tinned copper wire is 0.08-0.12 mm.
3. The connection cable for a rail transit locomotive of claim 1, wherein: the wrapping band layer (2) overlapped and wrapped on the outer side of the central conductor (1) is a polyethylene naphthalate wrapping band layer.
4. A connection cable for a rail transit locomotive according to claim 1 or 3, wherein: the overlapping rate of the wrapping tape layer (2) is 40% -55%.
5. The connection cable for a rail transit locomotive of claim 1, wherein: the twisting pitch diameter ratio of the plurality of strand conductors (6) is 10-15.
6. The connection cable for a rail transit locomotive of claim 1, wherein: the center conductor (1) is formed by twisting 5 strand conductors (6).
7. The connection cable for a rail transit locomotive of claim 1, wherein: the insulating layer (3) is a polyolefin insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321739755.4U CN220324156U (en) | 2023-07-05 | 2023-07-05 | Connecting cable of locomotive for track traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321739755.4U CN220324156U (en) | 2023-07-05 | 2023-07-05 | Connecting cable of locomotive for track traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220324156U true CN220324156U (en) | 2024-01-09 |
Family
ID=89422696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321739755.4U Active CN220324156U (en) | 2023-07-05 | 2023-07-05 | Connecting cable of locomotive for track traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220324156U (en) |
-
2023
- 2023-07-05 CN CN202321739755.4U patent/CN220324156U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |