CN109616254B - Power cable - Google Patents

Power cable Download PDF

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Publication number
CN109616254B
CN109616254B CN201910029517.6A CN201910029517A CN109616254B CN 109616254 B CN109616254 B CN 109616254B CN 201910029517 A CN201910029517 A CN 201910029517A CN 109616254 B CN109616254 B CN 109616254B
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CN
China
Prior art keywords
cable
buffering
pipe
wires
elastic protective
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Active
Application number
CN201910029517.6A
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Chinese (zh)
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CN109616254A (en
Inventor
朱昀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU HONGFEI OPTOELECTRONIC GROUP Co.,Ltd.
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Jiangsu Hongfei Optoelectronic Group Co ltd
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Publication date
Application filed by Jiangsu Hongfei Optoelectronic Group Co ltd filed Critical Jiangsu Hongfei Optoelectronic Group Co ltd
Priority to CN201910029517.6A priority Critical patent/CN109616254B/en
Publication of CN109616254A publication Critical patent/CN109616254A/en
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Publication of CN109616254B publication Critical patent/CN109616254B/en
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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
    • 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
    • H01B7/184—Sheaths comprising grooves, ribs or other projections
    • 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
    • H01B7/1845—Sheaths comprising perforations
    • 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
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame

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  • Insulated Conductors (AREA)

Abstract

The invention provides a power cable which comprises a cable core, a first elastic protective tube and a second elastic protective tube, wherein the cable core is arranged on the cable core; the first elastic protective pipe is arranged outside the cable core, a plurality of buffer grooves arranged along the axial direction of the cable are circumferentially arranged outside the first elastic protective pipe, and a buffer cavity arranged along the axial direction of the cable is arranged between any two adjacent buffer grooves in the first elastic protective pipe; the second elasticity pillar setting is outside at first elasticity pillar, and the inboard axial of second elasticity pillar has arranged a plurality of buffering archs of arranging along the cable axial, and a plurality of buffering archs set up respectively in a plurality of buffering recesses. When the cable is extruded, the plurality of buffering bulges are respectively extruded into the plurality of buffering grooves to buffer extrusion force through elastic deformation, and simultaneously the first elastic protection pipe is extruded by the second elastic protection pipe to buffer extrusion force through elastic deformation of the plurality of buffering cavities, so that the extrusion force is effectively buffered in the process, the cable can keep the straightness, and the cable core is prevented from being extruded.

Description

Power cable
Technical Field
The invention relates to the technical field of cables, in particular to a power cable.
Background
In the field of automatic production and processing, the power cable is extruded along with the action of a processing part, so that the phenomenon that the power cable is extruded and broken frequently occurs; when the power cable is extruded, the conductor core wire is extruded inevitably, thereby affecting the power transmission quality. In addition, when the current is increased, the temperature of the conductor is increased, and when the temperature of the insulating layer coated outside the conductor exceeds the upper limit, the performance of the insulating layer is changed, so that the insulation reliability of the insulating layer is greatly reduced, and the service life of the power cable is influenced.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a power cable.
The invention provides a power cable which comprises a cable core, a first elastic protective pipe and a second elastic protective pipe, wherein the first elastic protective pipe is arranged on the cable core; the first elastic protective pipe is arranged outside the cable core, a plurality of buffer grooves arranged along the axial direction of the cable are circumferentially arranged outside the first elastic protective pipe, and a buffer cavity arranged along the axial direction of the cable is arranged between any two adjacent buffer grooves in the first elastic protective pipe; the second elasticity pillar setting is outside at first elasticity pillar, and the inboard axial of second elasticity pillar has arranged a plurality of buffering archs of arranging along the cable axial, and a plurality of buffering archs set up respectively in a plurality of buffering recesses.
Preferably, the buffer groove and the buffer protrusion each have an arc-shaped cross section, and the arc-shaped radius of the buffer groove is larger than that of the buffer protrusion.
Preferably, the buffer cavity has an elliptical cross-section, and the major axis of the buffer cavity is arranged in a radial direction of the cable.
Preferably, the cable core includes high temperature resistant skeleton, a plurality of first wires, a plurality of second wire, the thermal-insulated pipe, fire-resistant protection tube, shielding layer and fire-retardant layer, high temperature resistant skeleton setting is put at the central point of cable, a plurality of first wires are arranged and first cable is the circumference around high temperature resistant skeleton along the cable axial and is distributed, the thermal-insulated pipe sets up in a plurality of first wire outsides, a plurality of second wires are arranged and a plurality of second wire is the circumference around the thermal-insulated pipe along the cable axial, the fire-resistant protection tube, the shielding layer, fire-retardant layer wraps up in proper order in a plurality of second wire outsides.
Preferably, the first conductive wire includes a plurality of first conductors twisted with each other and a first insulating layer wrapped around the plurality of first conductors.
Preferably, the second conductive wire includes a plurality of second conductors twisted with each other and a second insulating layer wrapping the plurality of second conductors.
Preferably, the first and second wires have a circular cross section, and the first and second wires have the same diameter.
Preferably, any one of the first wires abuts against the heat insulating pipe.
Preferably, any one of the second wires abuts against the heat insulation pipe and the fire-resistant protection pipe.
Preferably, the refractory protection tube comprises the following components in parts by weight: polyvinyl chloride-based body rubber: 90-110 parts of aluminum silicate: 30-70 parts of glass fiber, 5-15 parts of calcium alginate fiber, and coupling agent: 3-10 parts of a flame retardant: 10-20 parts of a vulcanizing agent: 1-5 parts. The fire-resistant material prepared from the material has a good flame-retardant effect, and the service life of the cable is prolonged.
According to the power cable provided by the invention, a plurality of buffer grooves arranged along the axial direction of the cable are circumferentially arranged outside a first elastic protective tube, a buffer cavity arranged along the axial direction of the cable is respectively arranged between any two adjacent buffer grooves in the first elastic protective tube, and a plurality of buffer bulges respectively arranged in the plurality of buffer grooves are axially arranged on the inner side of a second elastic protective tube; the cable is when the extrusion, and a plurality of buffering archs extrude respectively to a plurality of buffering recesses in and carry out elastic deformation buffering extrusion force, and the extrusion force is cushioned through the elastic deformation of a plurality of buffering cavities to first elasticity pillar under the extrusion of second elasticity pillar simultaneously, and at this in-process, the extrusion force is fallen by effective buffering, and the cable can keep in the same direction as straightness nature, avoids the cable core to receive the extrusion, has improved the performance of cable in adverse circumstances, the life of extension cable. In addition, be equipped with the heat insulating tube between a plurality of first wires and a plurality of second wire for the heat that work produced is not influenced each other between first wire and the second wire, simultaneously through setting up fire-resistant protection tube, when the external conflagration that breaks out, can make the heat conduct to the cable center very fast.
Drawings
Fig. 1 is a schematic structural diagram of a power cable according to the present invention.
Detailed Description
As shown in fig. 1, fig. 1 is a schematic structural diagram of a power cable according to the present invention.
Referring to fig. 1, the present invention provides a power cable, which includes a cable core, a first elastic protection tube 1 and a second elastic protection tube 2.
The cable core includes high temperature resistant skeleton 6, a plurality of first wires 7, a plurality of second wires 8, heat insulating pipe 9, fire-resistant protection tube 10, shielding layer 11 and fire-retardant layer 12, high temperature resistant skeleton 6 sets up the central point at the cable and puts, a plurality of first wires 7 arrange and first cable is the circumference around high temperature resistant skeleton 6 along the cable axial and distributes, heat insulating pipe 9 sets up and all supports with heat insulating pipe 9 in a plurality of first wires 7 outsides and arbitrary one first wire 7, a plurality of second wires 8 arrange and a plurality of second wires 8 are the circumference around heat insulating pipe 9 along the cable axial, fire-resistant protection tube 10, shielding layer 11, fire-retardant layer 12 wraps up in a plurality of second wires 8 outsides in proper order, and arbitrary one second wire 8 all with heat insulating pipe 9, fire-resistant protection tube 10 supports and leans on.
The first elastic protection tube 1 is arranged outside a cable core, a plurality of buffer grooves 3 arranged along the axial direction of the cable are circumferentially arranged outside the first elastic protection tube 1, each buffer groove 3 is provided with an arc-shaped cross section, a buffer cavity 4 arranged along the axial direction of the cable is arranged between any two adjacent buffer grooves 3 in the first elastic protection tube 1, each buffer cavity 4 is provided with an oval cross section, and the long axis of each buffer cavity 4 is arranged along the radial direction of the cable.
The second elastic protection tube 2 is arranged outside the first elastic protection tube 1, a plurality of buffering protrusions 5 arranged along the axial direction of the cable are axially arranged on the inner side of the second elastic protection tube 2, and the buffering protrusions 5 are respectively arranged in the buffering grooves 3. The buffer protrusions 5 each have an arc-shaped cross section, and the arc-shaped radius of the buffer protrusion 5 is smaller than that of the buffer groove 3.
In this embodiment, the first wire 7 includes a plurality of first conductors twisted with each other and a first insulating layer wrapped around the plurality of first conductors. The second wire 8 includes a plurality of second conductors twisted with each other and a second insulating layer wrapping the plurality of second conductors. The first and second wires 7 and 8 have circular cross sections, and the first and second wires 7 and 8 have the same diameter.
According to the power cable provided by the invention, a plurality of buffer grooves 3 which are arranged along the axial direction of the cable are circumferentially arranged outside a first elastic protective pipe 1, a buffer cavity 4 which is arranged along the axial direction of the cable is arranged between any two adjacent buffer grooves 3 in the first elastic protective pipe 1, and a plurality of buffer bulges 5 which are respectively arranged in the buffer grooves 3 are axially arranged on the inner side of a second elastic protective pipe 2; the cable is when the extrusion, a plurality of buffering arch 5 extrude respectively to a plurality of buffering recess 3 in carry out elastic deformation buffering extrusion force, first elasticity pillar 1 cushions the extrusion force through the elastic deformation of a plurality of buffering cavities 4 under the extrusion of second elasticity pillar 2 simultaneously, at this in-process, the extrusion force is fallen by effective buffering, the cable can keep in the same direction as straightness nature, avoid the cable core to receive the extrusion, the performance of cable in adverse circumstances has been improved, the life of extension cable.
In addition, a heat insulation pipe 9 is arranged between the first conducting wires 7 and the second conducting wires 8, so that heat generated by work between the first conducting wires 7 and the second conducting wires 8 is not influenced; meanwhile, by arranging the fire-resistant protection pipe 10, when a fire disaster occurs outside, heat can not be quickly conducted to the center of the cable, wherein the fire-resistant protection pipe 10 comprises the following components in parts by weight: polyvinyl chloride-based body rubber: 90-110 parts of aluminum silicate: 30-70 parts of glass fiber, 5-15 parts of calcium alginate fiber, and coupling agent: 3-10 parts of a flame retardant: 10-20 parts of a vulcanizing agent: 1-5 parts.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1. A power cable is characterized by comprising a cable core, a first elastic protective tube (1) and a second elastic protective tube (2); the first elastic protective pipe (1) is arranged outside the cable core, a plurality of buffer grooves (3) which are arranged along the axial direction of the cable are circumferentially arranged outside the first elastic protective pipe (1), and a buffer cavity (4) which is arranged along the axial direction of the cable is arranged between any two adjacent buffer grooves (3) in the first elastic protective pipe (1); the second elastic protective pipe (2) is arranged outside the first elastic protective pipe (1), a plurality of buffering protrusions (5) arranged along the axial direction of a cable are axially arranged on the inner side of the second elastic protective pipe (2), the buffering protrusions (5) are respectively arranged in a plurality of buffering grooves (3), the buffering grooves (3) and the buffering protrusions (5) are respectively provided with arc-shaped cross sections, and the arc-shaped radius of the buffering grooves (3) is larger than that of the buffering protrusions (5).
2. A power cable according to claim 1, characterized in that the buffer cavity (4) has an oval cross-section and that the major axis of the buffer cavity (4) is arranged in the radial direction of the cable.
3. A power cable according to claim 1 or 2, wherein the cable core comprises a high temperature resistant framework (6), a plurality of first wires (7), a plurality of second wires (8), a heat insulation pipe (9), a fire resistant protection pipe (10), a shielding layer (11) and a flame retardant layer (12), the high temperature resistant framework (6) is arranged at the central position of the cable, the plurality of first wires (7) are arranged along the axial direction of the cable, the first cable is circumferentially distributed around the high temperature resistant framework (6), the heat insulation pipe (9) is arranged outside the plurality of first wires (7), the plurality of second wires (8) are axially arranged along the cable, the plurality of second wires (8) are circumferentially distributed around the heat insulation pipe (9), and the fire resistant protection pipe (10), the shielding layer (11) and the flame retardant layer (12) are sequentially wrapped outside the plurality of second wires (8).
4. An electric power cable according to claim 3, characterized in that the first conductor (7) comprises a plurality of mutually twisted first conductors and a first insulating layer covering the plurality of first conductors.
5. An electric power cable according to claim 3, characterized in that the second conductor (8) comprises a plurality of second conductors twisted with each other and a second insulating layer covering the plurality of second conductors.
6. A power cable according to claim 3, characterized in that the first conductor (7), the second conductor (8) each have a circular cross-section and that the first conductor (7) and the second conductor (8) have the same diameter.
7. A power cable according to claim 3, characterized in that any one of the first conductors (7) abuts against the insulating tube (9).
8. A power cable according to claim 3, characterized in that any one of the second conductors (8) abuts against the insulating tube (9), the fire-resistant protective tube (10).
9. A power cable according to claim 3, characterized in that the fire resistant protective tube 10 comprises the following components in parts by weight: 90-110 parts of polyvinyl chloride matrix rubber, 30-70 parts of aluminum silicate, 5-15 parts of glass fiber, 5-15 parts of calcium alginate fiber, 3-10 parts of coupling agent, 10-20 parts of flame retardant and 1-5 parts of vulcanizing agent.
CN201910029517.6A 2019-01-13 2019-01-13 Power cable Active CN109616254B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910029517.6A CN109616254B (en) 2019-01-13 2019-01-13 Power cable

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Application Number Priority Date Filing Date Title
CN201910029517.6A CN109616254B (en) 2019-01-13 2019-01-13 Power cable

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CN109616254A CN109616254A (en) 2019-04-12
CN109616254B true CN109616254B (en) 2020-11-17

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113823454A (en) * 2020-06-18 2021-12-21 中特华星电缆股份有限公司 Three-layer co-extrusion crosslinked polyethylene insulated control cable
CN116825421B (en) * 2023-03-18 2024-05-17 三元科技（深圳）有限公司 Medical image transmission cable with high flexibility and long mechanical life

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202084326U (en) * 2011-05-18 2011-12-21 安徽弘毅电缆集团有限公司 Silicone rubber insulating motor lead wire
CN107958742A (en) * 2017-10-14 2018-04-24 深圳市金錋贵材科技有限公司 A kind of high fire-resisting flexible cable of communication power supply high fire-retardance
CN208335839U (en) * 2018-06-26 2019-01-04 江西联创电缆有限公司 A kind of high resiliency synthesis power cable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203826102U (en) * 2014-03-06 2014-09-10 安徽万泰电缆有限公司 Elastic anti-extrusion power cable
CN204066837U (en) * 2014-09-10 2014-12-31 安徽慧艺线缆集团有限公司 A kind of high-temp .-resistant electric cable for computer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202084326U (en) * 2011-05-18 2011-12-21 安徽弘毅电缆集团有限公司 Silicone rubber insulating motor lead wire
CN107958742A (en) * 2017-10-14 2018-04-24 深圳市金錋贵材科技有限公司 A kind of high fire-resisting flexible cable of communication power supply high fire-retardance
CN208335839U (en) * 2018-06-26 2019-01-04 江西联创电缆有限公司 A kind of high resiliency synthesis power cable

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Effective date of registration: 20201028

Address after: No.28, Maqiao Road, dianqiao Town, Gaoyou City, Yangzhou City, Jiangsu Province

Applicant after: JIANGSU HONGFEI OPTOELECTRONIC GROUP Co.,Ltd.

Address before: 234214 Louzhuang Village, Louzhuang Town, Lingbi County, Suzhou City, Anhui Province

Applicant before: Zhu Yun

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