CN222380322U - Low-energy-consumption medium-voltage cable - Google Patents
Low-energy-consumption medium-voltage cable Download PDFInfo
- Publication number
- CN222380322U CN222380322U CN202421147325.8U CN202421147325U CN222380322U CN 222380322 U CN222380322 U CN 222380322U CN 202421147325 U CN202421147325 U CN 202421147325U CN 222380322 U CN222380322 U CN 222380322U
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- conductor
- layer
- energy
- voltage cable
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 65
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 18
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 9
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 abstract description 7
- 230000004888 barrier function Effects 0.000 abstract description 6
- 230000002500 effect on skin Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
本实用新型公开了一种低能耗中压电缆，涉及中压电缆技术领域，包括导体，所述导体的次外层纵包有包带层，所述导体的外层设置有导体屏蔽层，所述导体屏蔽层的外表面设置有交联聚乙烯绝缘层，所述交联聚乙烯绝缘层的外表面包覆有绝缘屏蔽层，本实用新型通过包带层的设置，在中压电缆的导体绞合过程中，在导体的次外层纵包无纺布，形成包带层，用无纺布把外层导体和次外层导体隔离，扩大了导体表面积，减少了流通交流电时的集肤效应，降低了交流电阻，因此降低了能耗，同时在次外层纵包无纺布后，在次外层形成一道屏障，在三层共挤时，内屏不会因为挤出压力进入到导体内部，造成内屏凹陷，提高了导体屏蔽与绝缘界面的光滑性。
The utility model discloses a low-energy medium-voltage cable, which relates to the technical field of medium-voltage cables and comprises a conductor, wherein the sub-outer layer of the conductor is longitudinally wrapped with a tape layer, the outer layer of the conductor is provided with a conductor shielding layer, the outer surface of the conductor shielding layer is provided with a cross-linked polyethylene insulating layer, and the outer surface of the cross-linked polyethylene insulating layer is covered with an insulating shielding layer. The utility model provides a tape layer, and in the conductor twisting process of the medium-voltage cable, the sub-outer layer of the conductor is longitudinally wrapped with a non-woven fabric to form a tape layer, and the outer conductor and the sub-outer conductor are isolated by the non-woven fabric, thereby expanding the surface area of the conductor, reducing the skin effect when alternating current flows, reducing the alternating current resistance, and thus reducing energy consumption. At the same time, after the sub-outer layer is longitudinally wrapped with the non-woven fabric, a barrier is formed on the sub-outer layer, and during the three-layer co-extrusion, the inner screen will not enter the conductor due to the extrusion pressure, causing the inner screen to sag, thereby improving the smoothness of the conductor shielding and insulation interface.
Description
Technical Field
The utility model relates to the technical field of medium voltage cables, in particular to a low-energy-consumption medium voltage cable.
Background
The conductor of the alternating current medium voltage cable is a stranded conductor, has better flexibility and bendability, and can meet the requirements of different specifications. For large-sized medium-voltage cables, conductors of the cables need to be stranded by a plurality of layers of round copper wires. The bonding between the conductor layers is not tight enough and the monofilament-to-monofilament gaps become large in the outermost conductor layer.
In the prior art, when three layers of conductors are co-extruded, due to extrusion pressure of extrusion molding, an inner screen can be embedded into gaps of monofilaments of an outer layer of the conductors, even can be embedded into conductors of a secondary outer layer, so that the inner screen is concave, the product quality is not in accordance with customer requirements, a semi-conductive band is wrapped on the outer layer of the conductors, a layer of barrier is formed between the conductors and the inner screen, so that the inner screen is not easy to squeeze into the conductors, but the semi-conductive band is produced in a wrapping mode, the production efficiency of the stranding process is seriously reduced, the production cost is additionally increased due to the use of the semi-conductive band, meanwhile, the anti-concave inner screen material is tried to be adopted, in the practical use process, the anti-concave inner screen material is not ideal, and the inner screen is concave into the gaps of the conductors.
Disclosure of utility model
The utility model aims to solve the problems that in the prior art, a barrier is formed between a conductor and an inner screen by wrapping a semi-conductive tape on the outer layer of the conductor, so that the inner screen is not easy to squeeze into the conductor, but the semi-conductive tape is produced in a wrapping mode, the production efficiency of a wire twisting process is seriously reduced, the production cost is additionally increased by using the semi-conductive tape, meanwhile, the anti-sinking inner screen material is tried to be adopted, the effect of the anti-sinking inner screen material is not ideal in the actual use process, and the inner screen is also sunk into a conductor gap.
In order to achieve the purpose, the low-energy-consumption medium-voltage cable comprises a conductor, wherein a wrapping tape layer is longitudinally wrapped on the secondary outer layer of the conductor, a conductor shielding layer is arranged on the outer layer of the conductor, a crosslinked polyethylene insulating layer is arranged on the outer surface of the conductor shielding layer, an insulating shielding layer is wrapped on the outer surface of the crosslinked polyethylene insulating layer, a soft copper tape is wrapped on the outer surface of the insulating shielding layer, a reinforcing layer is wrapped on the outer surface of the soft copper tape, and a cable sheath is wrapped on the outer surface of the reinforcing layer.
Preferably, the reinforcing layer is formed by winding non-woven fabrics.
Preferably, the wrapping tape layer is formed by longitudinally wrapping and winding non-woven fabrics.
Preferably, an external groove is formed in the outer surface of the cable sheath.
Preferably, a metal ring is arranged in the peripheral groove.
Preferably, one end of the metal ring is fixedly connected with a lantern ring.
Preferably, the outer surface of the metal ring is provided with a connecting plate.
Preferably, a connecting strip is fixedly connected between the connecting plate and the metal ring.
Preferably, a protection plate is fixedly connected between two adjacent connection plates.
Preferably, the inner wall of the protection plate is attached to the outer surface of the cable sheath.
Compared with the prior art, the utility model has the advantages and positive effects that:
1. According to the utility model, through the arrangement of the wrapping layer, the non-woven fabric is longitudinally wrapped on the secondary outer layer of the conductor in the conductor twisting process of the medium-voltage cable to form the wrapping layer, the non-woven fabric is used for isolating the outer layer conductor from the secondary outer layer conductor, the surface area of the conductor is enlarged, the skin effect when alternating current flows is reduced, and the alternating current resistance is reduced, so that the energy consumption is reduced, meanwhile, after the non-woven fabric is longitudinally wrapped on the secondary outer layer, a barrier is formed on the secondary outer layer, and when three layers are co-extruded, the inner screen cannot enter the conductor due to extrusion pressure, so that the inner screen is recessed, and the smoothness of a conductor shielding and insulating interface is improved.
2. According to the utility model, through the matching arrangement of the metal ring and the protection plate, the surface of the cable sheath can be protected through the protection plate and the metal ring when the buried depth is about to be reached in the subsequent excavation process, the cable sheath is prevented from being damaged, the integrity is ensured, and meanwhile, through the arrangement of the peripheral grooves, the staged layout is formed on the surface of the cable sheath, and the cable sheath is not easy to move after soil is paved.
Drawings
Fig. 1 is a cross-sectional view of a low-energy-consumption medium-voltage cable according to the present utility model;
Fig. 2 is a schematic diagram showing a connection state between a cable sheath and a metal ring in a low-energy-consumption medium-voltage cable according to the present utility model;
Fig. 3 is a schematic perspective view of a metal ring in a low-energy-consumption medium-voltage cable according to the present utility model.
The illustration is that 1, a cable sheath, 2, a reinforcing layer, 3, a soft copper belt, 4, an insulating shielding layer, 5, a crosslinked polyethylene insulating layer, 6, a conductor, 7, a wrapping belt layer, 8, a conductor shielding layer, 9, a connecting strip, 10, an external groove, 11, a metal ring, 12, a connecting plate, 13, a protection plate, 14 and a collar.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Example 1
As shown in fig. 1-3, the utility model provides a low-energy-consumption medium-voltage cable, which comprises a conductor 6, wherein a wrapping tape layer 7 is longitudinally wrapped on a secondary outer layer of the conductor 6, a conductor shielding layer 8 is arranged on the outer layer of the conductor 6, a crosslinked polyethylene insulating layer 5 is arranged on the outer surface of the conductor shielding layer 8, an insulating shielding layer 4 is wrapped on the outer surface of the crosslinked polyethylene insulating layer 5, a soft copper belt 3 is wrapped on the outer surface of the insulating shielding layer 4, a reinforcing layer 2 is wrapped on the outer surface of the soft copper belt 3, a cable sheath 1 is wrapped on the outer surface of the reinforcing layer 2, the reinforcing layer 2 is formed by winding non-woven fabrics, the wrapping tape layer 7 is formed by longitudinally wrapping non-woven fabrics on the secondary outer layer conductor in the production process of medium-voltage conductor stranded wires, and the longitudinal wrapping speed is changed along with the speed change of the stranded wires, so that the production efficiency of the stranded wires is not affected. Meanwhile, after the non-woven fabric is longitudinally wrapped on the secondary outer layer, a barrier is formed on the secondary outer layer, when three layers are co-extruded, the inner screen cannot enter the conductor due to extrusion pressure, so that the inner screen is sunken, and the smoothness of a conductor shielding and insulating interface is improved.
The specific arrangement and action of this embodiment will be described in detail below, through the arrangement of the wrapping layer 7, in the stranding process of the conductor 6 of the medium voltage cable, the non-woven fabric is longitudinally wrapped on the secondary outer layer of the conductor 6 to form the wrapping layer 7, the outer layer conductor and the secondary outer layer conductor are isolated by the non-woven fabric, the surface area of the conductor is enlarged, the skin effect when alternating current flows is reduced, and the alternating current resistance is reduced, so that the energy consumption is reduced, meanwhile, after the secondary outer layer is longitudinally wrapped by the non-woven fabric, a barrier is formed on the secondary outer layer, and when three layers are co-extruded, the inner screen cannot enter the conductor due to extrusion pressure, so that the inner screen is concave, and the smoothness of the interface between the conductor shielding and insulation is improved.
Example two
As shown in fig. 1-3, an external groove 10 is formed in the outer surface of the cable sheath 1, a metal ring 11 is arranged in the external groove 10, one end of the metal ring 11 is fixedly connected with a lantern ring 14, a connecting plate 12 is arranged on the outer surface of the metal ring 11, a connecting strip 9 is fixedly connected between the connecting plate 12 and the metal ring 11, a protection plate 13 is fixedly connected between two adjacent connecting plates 12, and the inner wall of the protection plate 13 is attached to the outer surface of the cable sheath 1.
The effect that its whole embodiment reached is, through the cooperation setting of metal ring 11 and guard plate 13, can be in the follow-up in-process that needs excavate, when will reaching buried depth, protect cable sheath 1's surface through guard plate 13 and metal ring 11, prevent to damage cable sheath 1, guarantee the integrality, simultaneously through setting up of peripheral groove 10, form the staged layout at cable sheath 1's surface, after earth is laid, can make cable sheath 1 be difficult for taking place to remove.
The use method and the working principle of the device are that in the production process of the medium-voltage conductor stranded wire, non-woven fabrics are longitudinally wrapped on the secondary outer conductor, the longitudinally wrapping speed is changed along with the speed of the stranded wire, the longitudinally wrapped non-woven fabrics form a wrapping band layer 7, when the production is completed, a metal ring 11 is required to be installed in an external groove 10, one end of the metal ring 11 penetrates through a lantern ring 14, then the end of the metal ring 11 is bent and hooked with the lantern ring 14 to form limit, after the installation, a connecting plate 12 is required to be positioned above, a protection plate 13 is welded between two adjacent connecting plates 12, the heat is not easy to transfer to a cable sheath 1 through overhead of 19, the cable sheath 1 is prevented from being damaged, the welding point is not required to be excessive, only the protection plate 13 is required to be ensured to be difficult to fall off, and when the cable sheath 1 is required to be bent during the installation, the protection plate 13 is required to be bent.
The present utility model is not limited to the above embodiments, and any equivalent embodiments which can be changed or modified by the technical disclosure described above can be applied to other fields, but any simple modification, equivalent changes and modification to the above embodiments according to the technical matter of the present utility model will still fall within the protection scope of the technical disclosure.
Claims (10)
1. The low-energy-consumption medium-voltage cable is characterized by comprising a conductor (6), wherein a wrapping tape layer (7) is longitudinally wrapped on a secondary outer layer of the conductor (6), a conductor shielding layer (8) is arranged on an outer layer of the conductor (6), a crosslinked polyethylene insulating layer (5) is arranged on the outer surface of the conductor shielding layer (8), an insulating shielding layer (4) is wrapped on the outer surface of the crosslinked polyethylene insulating layer (5), a soft copper tape (3) is wrapped on the outer surface of the insulating shielding layer (4), a reinforcing layer (2) is wrapped on the outer surface of the soft copper tape (3), and a cable sheath (1) is wrapped on the outer surface of the reinforcing layer (2).
2. The low-energy-consumption medium-voltage cable according to claim 1, wherein the reinforcing layer (2) is formed by winding non-woven fabrics.
3. The low-energy-consumption medium-voltage cable according to claim 1, wherein the wrapping tape layer (7) is formed by longitudinally wrapping and winding non-woven fabrics.
4. The low-energy-consumption medium-voltage cable according to claim 1, wherein the outer surface of the cable sheath (1) is provided with an external groove (10).
5. A low-energy medium-voltage cable according to claim 4, wherein the outer groove (10) is internally provided with a metal ring (11).
6. A low energy consumption medium voltage cable according to claim 5, wherein one end of the metal ring (11) is fixedly connected with a collar (14).
7. A low-energy-consumption medium voltage cable according to claim 5, characterized in that the outer surface of the metal ring (11) is provided with a connecting plate (12).
8. The low-energy-consumption medium-voltage cable according to claim 7, wherein a connecting strip (9) is fixedly connected between the connecting plate (12) and the metal ring (11).
9. The low-energy-consumption medium-voltage cable according to claim 7, wherein a protection plate (13) is fixedly connected between two adjacent connection plates (12).
10. A low-energy-consumption medium voltage cable according to claim 9, characterized in that the inner wall of the protection plate (13) is attached to the outer surface of the cable sheath (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421147325.8U CN222380322U (en) | 2024-05-24 | 2024-05-24 | Low-energy-consumption medium-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421147325.8U CN222380322U (en) | 2024-05-24 | 2024-05-24 | Low-energy-consumption medium-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222380322U true CN222380322U (en) | 2025-01-21 |
Family
ID=94247669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421147325.8U Active CN222380322U (en) | 2024-05-24 | 2024-05-24 | Low-energy-consumption medium-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222380322U (en) |
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2024
- 2024-05-24 CN CN202421147325.8U patent/CN222380322U/en active Active
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