CN112863755A - High current-carrying capacity low pressure power cable under high temperature environment - Google Patents
High current-carrying capacity low pressure power cable under high temperature environment Download PDFInfo
- Publication number
- CN112863755A CN112863755A CN202110238933.4A CN202110238933A CN112863755A CN 112863755 A CN112863755 A CN 112863755A CN 202110238933 A CN202110238933 A CN 202110238933A CN 112863755 A CN112863755 A CN 112863755A
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- China
- Prior art keywords
- fan
- rubber tube
- cable
- temperature environment
- inner liner
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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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
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- Insulated Conductors (AREA)
Abstract
The invention discloses a high-carrying-capacity low-voltage power cable in a high-temperature environment, which comprises a rubber tube, a plurality of main wire cores, a plurality of fan-shaped rubber hoses, an inner liner, a shielding layer and an outer sheath layer, wherein the rubber tube is positioned at the center of the inner part of the rubber tube, the main wire cores are uniformly distributed outside the rubber tube and are arranged in a tangent mode with the rubber tube, the fan-shaped rubber hoses are positioned in gaps among the main wire cores, the inner liner is extruded outside the main wire cores and the fan-shaped rubber hoses, the shielding layer is extruded outside the inner liner, the outer sheath layer is extruded outside the shielding layer, the fan-shaped rubber hoses are attached to the. The invention provides a high-carrying-capacity low-voltage power cable in a high-temperature environment, relates to the use occasions of high-carrying-capacity low-voltage power cables in various high-temperature environments which are difficult to radiate heat, enhances the radiating capacity and the power supply capacity of the cable in the high-temperature environment, ensures the service life of the cable, reduces the production cost, has a simple integral structure, and is suitable for industrial popularization and use.
Description
Technical Field
The invention belongs to the technical field of electric wires and cables, and particularly relates to a high-carrying-capacity low-voltage power cable in a high-temperature environment.
Background
At present, with the further improvement of mechanization and intellectualization in China, the demand of various industries on electric power is further expanded, the production mode is more centralized, and the requirement of a production workshop on the power supply capacity of a power cable is further increased. When a conventional power cable supplies power, heat loss is generated, in a concentrated or closed environment of a power supply line, heat generated by the cable is not easy to dissipate, the cable generates heat seriously, the resistance R of the cable can be increased along with the increase of temperature, and the resistance R is I according to a heat power formula2R can yield: the resistance R is increased, the heat loss is further increased, the temperature of the cable is continuously increased, the maximum operation temperature of the conventional XLPE insulated power cable conductor is 90 ℃, and in order to ensure the safety of the cable, the current-carrying capacity I of the cable must be reduced, so the power supply capacity of the cable is limited. In order to meet the production requirement, a user needs to use a plurality of cables for splicing to meet a larger power supply requirement, the production cost is increased, the more the number of the cables is, the more the generated heat loss is, the waste on the power is caused, the service life of the cables is reduced due to the increase of the temperature, the production safety is reduced, and the waste on the space is also caused. In order to solve the problems, the invention develops the cable so as to reduce the production cost of users and ensure that the users can safely and stably produce and operate.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a high-carrying-capacity low-voltage power cable in a high-temperature environment.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
the utility model provides a high current-carrying capacity low pressure power cable under high temperature environment, is including the rubber tube that is located inside central authorities position, the equipartition outside the rubber tube and with rubber tube tangent a plurality of thread core that sets up, a plurality of fan-shaped rubber hose of equipartition in the clearance between the thread core, crowded package in the outside inner liner of thread core and fan-shaped rubber hose, crowded package in the outside shielding layer of inner liner and crowded package in the outside oversheath layer of shielding layer, fan-shaped rubber hose is obeyed at the thread core surface, and fan-shaped rubber hose outside water receiving circulation carries out the cable heat dissipation.
Furthermore, the main wire core comprises a conductor and an insulator coated outside the conductor, and the fan-shaped rubber hose is attached to the insulating surface.
Further, the rubber tube is a hollow rubber hose.
Furthermore, the inner liner is formed by wrapping two layers of PE black tapes.
Furthermore, the outer sheath layer is a polyethylene sheath layer.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a high-carrying-capacity low-voltage power cable in a high-temperature environment, which comprises a rubber tube, a plurality of main wire cores, a plurality of fan-shaped rubber hoses, an inner liner, a shielding layer and an outer sheath layer, wherein the rubber tube is positioned at the center of the inner part of the rubber tube, the main wire cores are uniformly distributed outside the rubber tube and are arranged in a tangent mode with the rubber tube, the fan-shaped rubber hoses are positioned in gaps among the main wire cores, the inner liner is extruded outside the main wire cores and the fan-shaped rubber hoses, the shielding layer is extruded outside the inner liner, the outer sheath layer is extruded outside the shielding layer, the fan-shaped rubber hoses are attached to the. The invention relates to various use occasions requiring high current-carrying capacity low-voltage power cables in high-temperature and difficult-to-radiate environments, which can enhance the radiating capacity and the power supply capacity of the cables in high-environment temperatures, ensure the service life of the cables, reduce the production cost, have a simple integral structure and are suitable for industrial popularization and use.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention is described in detail below with reference to the attached drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby clearly defining the protection scope of the present invention.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
As shown in figure 1, a high current-carrying capacity low-voltage power cable under a high-temperature environment comprises a rubber tube 1, a plurality of main wire cores 2, a plurality of fan-shaped rubber hoses 3, an inner liner 4, a shielding layer 5 and an outer sheath layer 6, wherein the rubber tube 1 is arranged outside the rubber tube 1 and is tangent to the rubber tube 1, the main wire cores 2 are arranged in gaps among the main wire cores 2, the inner liner 4 is extruded outside the main wire cores 2 and the fan-shaped rubber hoses 3, the shielding layer 5 is extruded outside the inner liner 4, the outer sheath layer 6 is extruded outside the shielding layer 5, the rubber tube 1 is a hollow rubber hose, each main wire core 2 comprises a conductor 21 and an insulation 22 coated outside the conductor 21, the conductor 21 adopts a round conductor used by a conventional low-voltage power cable and meets the requirements of national standard GB/T3956 class 2 or 5 on the performance of the conductor, the insulation 22 adopts cross-linked polyethylene (XLPE) for insulation, and the requirements on the insulation thickness and the performance of the XLPE required by, XLPE volume resistivity is perfect, dielectric loss is little, there is splendid ageing resistance characteristic and superstrong heat resistance, the load carrying capacity is strong, chemical corrosion resistance, mechanical strength is high, fan-shaped rubber hose 3 sets up in the clearance between 2 main line cores and is located inner liner 4, 3 docks of fan-shaped rubber hose are at insulating 22 surface, can ensure the circularity of cable, the external hydrologic cycle of fan-shaped rubber hose 3 of during operation, the specific heat capacity of water is higher, the heat absorption capacity is strong, bring the heat out of the cable through water at the cable during operation, reduce the temperature of cable during operation, the current-carrying capacity of improvement cable.
The inner liner layer 4 is formed by wrapping PE black tapes, so that the cable is kept round and convenient to produce.
The shielding layer 5 is braided and shielded by adopting copper wires, the surface of the PE black belt coated on the inner liner layer 4 is braided and covered by the copper wires of the braiding machine, the braiding density is not less than 85%, the shielding performance of the copper wire braided and shielded is good, the influence of inductance on the cable can be effectively inhibited, and the normal operation of the cable is guaranteed.
The outer sheath layer 6 is made of polyethylene sheath material, the thickness requirement of the outer sheath layer meets the assumed thickness requirement in GB/T-12706, and the surface of the outer sheath layer is smooth and has no air holes. The polyethylene sheath material has good chemical stability, can resist corrosion of most acids and alkalis, has small water absorption and excellent electrical insulation, and ensures the service characteristics of the cable.
Example 1
As shown in fig. 1, a high current-carrying capacity low-voltage power cable in a high-temperature environment comprises a rubber tube 1 located at the center of the inside, three main wire cores 2 uniformly distributed outside the rubber tube 1 and arranged in a tangent manner with the rubber tube 1, three fan-shaped rubber hoses 3 uniformly distributed in gaps between the main wire cores 2, an inner liner 4 extruded outside the main wire cores 2 and the fan-shaped rubber hoses 3, a shielding layer 5 extruded outside the inner liner 4, and an outer sheath layer 6 extruded outside the shielding layer 5; the rubber tube 1 is a hollow rubber hose and is positioned in a central gap of the three main wire cores 2; each main wire core 2 comprises a conductor 21 and an insulation 22 coated outside the conductor 21, the conductor 21 adopts a round conductor used by a conventional low-voltage power cable, the requirements of national standard GB/T3956 class 2 or class 5 conductors on the performance of the conductor are met, the insulation 22 adopts crosslinked polyethylene for insulation, the volume resistivity is perfect, the dielectric loss is small, the excellent anti-aging characteristic and the super-strong heat resistance are realized, the load capacity is strong, the chemical corrosion resistance is realized, and the mechanical strength is high; three fan-shaped rubber hose 3 sets up respectively in inner liner 4, three main line core 2 between the clearance, and fan-shaped rubber hose 3 is obedient is insulating 22 surfaces, can ensure the circularity of cable, and the external hydrologic cycle of fan-shaped rubber hose 3 of during operation, the specific heat capacity of water is higher, and the heat absorption capacity is strong, takes the heat out of the cable through water at cable during operation, reduces the temperature of cable during operation, improves the current-carrying capacity of cable.
The inner liner layer 4 is formed by wrapping two layers of PE black tapes with the thickness of 0.3mm, so that the cable keeps round and is convenient to produce.
The shielding layer 5 is braided and shielded by adopting copper wires, the surface of the PE black belt coated on the inner liner layer 4 is braided and covered by the copper wires of the braiding machine, the braiding density is not less than 85%, the shielding performance of the copper wire braided and shielded is good, the influence of inductance on the cable can be effectively inhibited, and the normal operation of the cable is guaranteed.
The outer sheath layer 6 is made of polyethylene sheath material, the thickness requirement of the outer sheath layer meets the assumed thickness requirement in GB/T-12706, and the surface of the outer sheath layer is smooth and has no air holes. The polyethylene sheath material has good chemical stability, can resist corrosion of most acids and alkalis, has small water absorption and excellent electrical insulation, and ensures the service characteristics of the cable.
The parts of the invention not specifically described can be realized by adopting the prior art, and the details are not described herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The utility model provides a high current-carrying capacity low pressure power cable under high temperature environment, its characterized in that, including the rubber tube that is located inside central point position, the equipartition is outside at the rubber tube and with a plurality of thread core that rubber tube tangent set up, be located the fan-shaped rubber hose of a plurality of in the clearance between the thread core, crowded package in the outside inner liner of thread core and fan-shaped rubber hose, crowded package in the outside shielding layer of inner liner and crowded package in the outside oversheath layer of shielding layer, fan-shaped rubber hose is obeyed at the thread core surface, and fan-shaped rubber hose outside water receiving circulation carries out cable heat dissipation.
2. The cable according to claim 1, wherein the main core includes a conductor and an insulation covering the conductor, and the fan-shaped flexible rubber hose is attached to the insulation surface.
3. The high ampacity low-voltage power cable under high temperature environment according to claim 1, wherein the rubber tube is a hollow rubber hose.
4. The high ampacity low-voltage power cable under high temperature environment according to claim 1, wherein the inner liner is formed by wrapping two layers of PE black tapes.
5. The cable according to claim 1, wherein the outer sheath layer is a polyethylene sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238933.4A CN112863755A (en) | 2021-03-04 | 2021-03-04 | High current-carrying capacity low pressure power cable under high temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238933.4A CN112863755A (en) | 2021-03-04 | 2021-03-04 | High current-carrying capacity low pressure power cable under high temperature environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112863755A true CN112863755A (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110238933.4A Pending CN112863755A (en) | 2021-03-04 | 2021-03-04 | High current-carrying capacity low pressure power cable under high temperature environment |
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| Country | Link |
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| CN (1) | CN112863755A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114724763A (en) * | 2022-03-10 | 2022-07-08 | 远东电缆有限公司 | Power transmission cable and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996031885A1 (en) * | 1995-04-04 | 1996-10-10 | Felten & Guilleaume Energietechnik Aktiengesellschaft | Power cable with optical fibers |
| CN201229802Y (en) * | 2008-07-22 | 2009-04-29 | 芜湖明远电线电缆有限责任公司 | Water cooling special electric cable |
| CN211957239U (en) * | 2019-10-13 | 2020-11-17 | 无锡裕德电缆科技有限公司 | Low-smoke halogen-free flame-retardant low-voltage cable |
-
2021
- 2021-03-04 CN CN202110238933.4A patent/CN112863755A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996031885A1 (en) * | 1995-04-04 | 1996-10-10 | Felten & Guilleaume Energietechnik Aktiengesellschaft | Power cable with optical fibers |
| CN201229802Y (en) * | 2008-07-22 | 2009-04-29 | 芜湖明远电线电缆有限责任公司 | Water cooling special electric cable |
| CN211957239U (en) * | 2019-10-13 | 2020-11-17 | 无锡裕德电缆科技有限公司 | Low-smoke halogen-free flame-retardant low-voltage cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114724763A (en) * | 2022-03-10 | 2022-07-08 | 远东电缆有限公司 | Power transmission cable and manufacturing method thereof |
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