CN214671879U - Waterproof protection against insects ultraviolet resistance street lamp cable - Google Patents
Waterproof protection against insects ultraviolet resistance street lamp cable Download PDFInfo
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- CN214671879U CN214671879U CN202121154165.6U CN202121154165U CN214671879U CN 214671879 U CN214671879 U CN 214671879U CN 202121154165 U CN202121154165 U CN 202121154165U CN 214671879 U CN214671879 U CN 214671879U
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Abstract
The utility model discloses a waterproof protection against insects ultraviolet resistance street lamp cable, be provided with the monomer wire in the cable, the monomer wire has a metal core, the surface mounting of metal core has the insulating layer the skin of insulating layer is installed the semiconduction band that blocks water of conductor the skin in conductor semiconduction band that blocks water is provided with the shielding layer the surface mounting of shielding layer has insulating semiconduction band that blocks water, and it has the filler that blocks water to fill between the monomer wire, the outmost oversheath that is provided with of cable the internally mounted of oversheath has the nylon inner sheath. The utility model discloses overcome the technical difficulty that street lamp cable fault rate is high, the maintenance cost is high, solved the problem of the frequent damage of street lamp cable.
Description
Technical Field
The utility model relates to a street lamp cable especially relates to a waterproof protection against insects ultraviolet resistance street lamp cable.
Background
In recent years, urban traffic infrastructure is greatly invested in China, more and more roads are provided, traffic is more and more convenient, and with the investment and use of many urban roads, road street lamps frequently find the problem of street lamp faults caused by line problems, so that the maintenance cost is high, and the requirements of people cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a waterproof protection against insects ultraviolet resistance street lamp cable solves the shortcoming regret that prior art exists.
The utility model discloses a following technical scheme realizes:
the utility model provides a waterproof protection against insects ultraviolet resistance street lamp cable, be provided with the monomer wire in the cable, the monomer wire has a metal core, a serial communication port, the surface mounting of metal core has the insulating layer the outer semiconductive band that blocks water of conductor is installed to the skin of insulating layer the skin that the semiconductive band that blocks water of conductor is provided with the shielding layer the surface mounting of shielding layer has insulating semiconductive band that blocks water, and it has the filler that blocks water to fill between the monomer wire, the outmost oversheath that is provided with of cable the internally mounted of oversheath has the nylon inner sheath.
Further, cable lugs are arranged at the symmetrical positions of the outer sheath.
Furthermore, the cable lug is provided with a traction-resistant stainless steel wire.
Furthermore, the metal wire core is a copper conductor.
Further, the insulating layer is a crosslinked polyethylene insulating layer.
Furthermore, the shielding layer is a copper strip lapping shielding layer.
The utility model discloses the beneficial technological effect who possesses is:
the compression coefficient of a copper conductor which is stranded by adopting trapezoidal single lines in the conductor structure is less than 0.85, so that the conductor structure is compact, the surface is smooth and has no burrs, and the conductive capacity and the current-carrying capacity of the conductor are improved;
a layer of conductor semi-conductive water-blocking tape is wrapped outside the conductor, and the function of the conductor semi-conductive water-blocking tape not only plays a role in protecting the conductor from water, but also has a function of dissipating a magnetic field, so that electric energy is more stable through the conductor, and the loss of a cable is reduced;
the insulation adopts ultraviolet light cross-linked polyethylene, after the insulation material is irradiated in a production process in a 360-degree all-directional manner through strong ultraviolet light equipment, plastic molecules are subjected to structural cross-linking rearrangement, and the structure of the insulation material forms a 3D net shape, so that the insulation performance, the wear resistance and the aging resistance are improved;
a layer of insulating semi-conductive water-blocking tape is wrapped outside the insulation layer, so that the cable is prevented from longitudinally entering water to protect the cable insulation layer, and the function of shielding and dissipating the interference of a surrounding magnetic field is also achieved;
the copper strip with the thickness of 0.1mm is wrapped on the outer layer of the insulating semi-conductive water-blocking wrapping tape to reinforce the electric phase shielding protection;
the cabled gap of the cable core is filled with water-blocking filling, so that the cable has a round overall shape and a longitudinal waterproof function;
the cable inner sheath is made of high-density nylon materials, so that the wear resistance and radial waterproof reliability of the cable are guaranteed; the outer sheath of the cable is made of ultraviolet-resistant termite-proof low-smoke halogen-free polyolefin, the material contains capsaicin, can effectively prevent termite or other rats and insects from invading, and has strong ultraviolet resistance, and the cable can continuously and normally run for 87600 hours under the condition of ultraviolet intensity UVI 10.
Two protruding parts on the outer sheath of the cable are cable lugs of the cable, a stainless steel wire is extruded in the two protruding parts, the cable has the function of bearing tension in various special working conditions of long distance and outdoors, the cable conductor is protected from being reduced by the action of tension, the current-carrying capacity is not influenced, and the operation safety of the cable is ensured.
Drawings
Fig. 1 is a schematic view of the cross-sectional structure of the street lamp cable of the present invention.
Detailed Description
The following description of the embodiments will help the public to understand the present invention, but the specific embodiments given by the applicant should not be considered as limiting the technical solution of the present invention, and any changes in the definition of the components or technical features and/or in the form of the overall structure rather than substantial changes should be considered as the protection scope defined by the technical solution of the present invention.
Description of reference numerals:
copper conductor 1, conductor semi-conductive water-blocking tape 2, crosslinked polyethylene insulating layer 3, insulating semi-conductive water-blocking tape 4, copper strip wrapped shielding layer 5, water-blocking filler 6, traction-resistant stainless steel wire 7, cable lug 8, nylon inner sheath 9 and outer sheath 10
The waterproof insect-proof ultraviolet-resistant street lamp cable is characterized in that a single conductor is arranged in the cable, the single conductor is provided with a metal wire core, an insulating layer is arranged on the outer surface of the metal wire core, a conductor semi-conductive water-blocking wrapping tape 2 is arranged on the outer layer of the insulating layer, a shielding layer is arranged on the outer layer of the conductor semi-conductive water-blocking wrapping tape 2, an insulating semi-conductive water-blocking wrapping tape 4 is arranged on the outer surface of the shielding layer, a water-blocking filler 6 is filled between the single conductors, an outer sheath 10 is arranged on the outermost layer of the cable, and a nylon inner sheath 9 is arranged on the inner surface of the outer sheath 10. In the embodiment, cable lugs 8 are arranged at the symmetrical positions of the outer sheath, traction-resistant stainless steel wires 7 are arranged on the cable lugs, the wire cores are copper conductors 1, the insulating layer is a crosslinked polyethylene insulating layer 3, and the shielding layer is a copper strip wrapped shielding layer 5
The compression coefficient of the copper conductor 1 is smaller than 0.85, the structure is compact, the surface is smooth and burr-free, and the conductivity and current-carrying capacity of the conductor are improved;
the semi-conductive band 2 that blocks water of one deck conductor has been wrapped around the outside of copper conductor 1, and the semi-conductive band 2 that blocks water of conductor has not only played the effect of the protection conductor that blocks water, has still had the effect of magnetic field dissipation, makes the electric energy more stable through the conductor, reduces the cable loss.
The function of the semi-conductivity of the conductor is: because the cable conductor is formed by twisting a plurality of wires, tips and bulges can not be avoided on the surface of the conductor in the twisting process, and an air gap can be formed between the tip and the insulation layer, the electric field intensity at the positions where the tips and the bulges are formed is very high, the high electric field intensity can inevitably cause the tips and the bulges to inject space charges into the insulation, the tip discharge is easily caused in the long-term operation process, and then an electric tree is formed in the insulation, and finally the insulation layer of the cable is punctured. In order to relax the electric field concentration in the cable, have the same potential as the shielded conductor and make good contact with the insulating layer, improve the electric field stress distribution of the contact surface of the conductor and the insulating layer, avoid partial discharge between the conductor and the insulating layer and improve the electric strength of the cable, a semi-conducting layer must be added between the conductor and the insulating layer of the cable, and the semi-conducting layer has the advantages of low volume resistivity, small temperature change, low cost, good extrusion processing performance, firm bonding with the insulating layer, good compatibility, and equivalent electrical performance and mechanical performance of a vulcanization speed and an insulating material under any condition.
The insulation adopts ultraviolet light cross-linked polyethylene, after the insulation material is irradiated in a production process in a 360-degree all-directional manner through strong ultraviolet light equipment, plastic molecules are subjected to structural cross-linking rearrangement, and the structure of the insulation material forms a 3D net shape, so that the insulation performance, the wear resistance and the aging resistance are improved;
a layer of insulating semi-conductive water-blocking tape 4 is wrapped outside the insulation layer to prevent the cable from longitudinally entering water and protect the cable insulation layer, and the insulating semi-conductive water-blocking tape also has the function of shielding and dissipating the interference of a surrounding magnetic field. The insulating semi-conductive water-blocking tape 4 is arranged to have the following functions: the cable is prevented from being bent during operation, the surface of the cable insulation layer is stretched under the action of tension, and if partial discharge exists, submicroscopic cracks are generated due to the surface bending stress to cause the initiation of electrical dendrites, or the surface is corroded by the partial discharge to cause new cracking.
Another function is to eliminate air gaps between the insulating layer and the outer metallic shield layer. No matter how perfect the processing technology of the metal shielding layer is, bending deformation, cold and hot effects and the like in operation and construction of the metal shielding layer can generate an annular flat air gap between the metal shielding layer and the insulating layer, the deterioration effect of the annular flat air gap on an electric field is large, and the air gap is firstly caused to discharge until insulation breakdown.
The function of arranging the insulating semi-conductive water-blocking tape 4 is to improve the electric field distribution. The cable conductor is formed by twisting a plurality of conducting wires, an air gap is easily formed between the cable conductor and the insulating layer, the surface of the cable conductor is not smooth, and electric field concentration can be caused. Adding a layer of shielding layer made of semi-conductive material on the surface of the conductor, wherein the shielding layer is equipotential with the shielded conductor and is in good contact with the insulating layer, so that local discharge is avoided between the conductor and the insulating layer, and the layer of shielding is an inner shielding layer; similarly, there may be a gap at the contact position between the insulating surface and the sheath, which is a factor causing partial discharge, so that a shielding layer of semi-conductive material is added on the surface of the insulating layer, which has good contact with the shielded insulating layer and is equipotential with the metal sheath, thereby avoiding partial discharge between the insulating layer and the sheath, and the shielding layer is an outer shielding layer; the extruded insulated cable without the metal sheath is additionally provided with a metal shielding layer wrapped by a copper strip or a copper wire besides the semi-conductive shielding layer, and the metal shielding layer has the function of passing capacitance current during normal operation; when the system is short-circuited, the short-circuit current channel is used as a short-circuit current channel and also plays a role in shielding an electric field.
The outer layer of the insulating semi-conductive water-blocking tape 4 is wrapped by a 0.1mm copper strip, so that the electric phase shielding protection is enhanced; the cabled gap of the cable core is filled with water-blocking filling, so that the cable has a round overall shape and a longitudinal waterproof function;
the cable inner sheath is made of high-density nylon materials, so that the abrasion resistance and radial waterproof reliability of the cable are guaranteed; the outer sheath of the cable is made of ultraviolet-resistant termite-proof low-smoke halogen-free polyolefin, the material contains capsaicin, can effectively prevent termite or other rats and insects from invading, and has strong ultraviolet resistance, and the cable can continuously and normally run for 87600 hours under the condition of ultraviolet intensity UVI 10.
Two protruding parts on the outer sheath of the cable are cable lugs of the cable, a stainless steel wire is extruded in the two protruding parts, the cable has the function of bearing tension in various special working conditions of long distance and outdoors, the cable conductor is protected from being reduced by the action of tension, the current-carrying capacity is not influenced, and the operation safety of the cable is ensured.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
In this patent, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Of course, the present invention can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.
Claims (6)
1. The utility model provides a waterproof protection against insects ultraviolet resistance street lamp cable, be provided with the monomer wire in the cable, the monomer wire has a metal core, a serial communication port, the surface mounting of metal core has the insulating layer the outer semiconductive band that blocks water of conductor is installed to the skin of insulating layer the skin that the semiconductive band that blocks water of conductor is provided with the shielding layer the surface mounting of shielding layer has insulating semiconductive band that blocks water, and it has the filler that blocks water to fill between the monomer wire, the outmost oversheath that is provided with of cable the internally mounted of oversheath has the nylon inner sheath.
2. The waterproof, insect-resistant and ultraviolet-resistant street lamp cable as claimed in claim 1, wherein cable lugs are arranged at symmetrical positions of the outer sheath.
3. The waterproof, insect-resistant and ultraviolet-resistant street lamp cable according to claim 2, wherein the cable lug is provided with a traction-resistant stainless steel wire.
4. The waterproof, insect-proof and ultraviolet-resistant street lamp cable as claimed in claim 1 or 2, wherein the metal wire core is a copper conductor.
5. The waterproof, insect-resistant and ultraviolet-resistant street lamp cable as claimed in claim 1 or 2, wherein the insulating layer is a cross-linked polyethylene insulating layer.
6. The waterproof insect-proof ultraviolet-resistant street lamp cable as claimed in claim 1 or 2, wherein the shielding layer is a copper tape wrapped shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154165.6U CN214671879U (en) | 2021-05-26 | 2021-05-26 | Waterproof protection against insects ultraviolet resistance street lamp cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154165.6U CN214671879U (en) | 2021-05-26 | 2021-05-26 | Waterproof protection against insects ultraviolet resistance street lamp cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214671879U true CN214671879U (en) | 2021-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121154165.6U Active CN214671879U (en) | 2021-05-26 | 2021-05-26 | Waterproof protection against insects ultraviolet resistance street lamp cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214671879U (en) |
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2021
- 2021-05-26 CN CN202121154165.6U patent/CN214671879U/en active Active
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