CN115036063A - Double-core layer stranded cable - Google Patents
Double-core layer stranded cable Download PDFInfo
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- CN115036063A CN115036063A CN202210664008.2A CN202210664008A CN115036063A CN 115036063 A CN115036063 A CN 115036063A CN 202210664008 A CN202210664008 A CN 202210664008A CN 115036063 A CN115036063 A CN 115036063A
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- insulating layer
- conductor
- insertion opening
- density polyethylene
- cable according
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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
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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
- H01B7/02—Disposition of insulation
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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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
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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
- H01B7/29—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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- 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
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Abstract
The invention belongs to the field of power cables, and particularly relates to a double-core stranded cable which is provided with an outer protective layer, a plurality of electric units and a central reinforcing piece, wherein the electric units are stranded outside the central reinforcing piece in a layer mode, and the outer protective layer is extruded outside the electric units in a plastic mode; the invention has the advantages of stable structure, convenient wiring, difficult error in wiring, convenient electric energy stripping, simultaneous transmission of electric signals and the like.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to a double-core stranded cable.
Background
With the wide-range popularization of domestic 5G construction, the requirement of the optical cable is larger and larger, and the requirement of an operator on the water permeability of the optical cable is stricter and stricter.
In the prior art, CN213070655U discloses an environment-friendly flame-retardant rubber jacketed flexible cable, which comprises an oval dual-core signal control main body arranged at the center of the cable, wherein a plurality of oval dual-core signal control main bodies are surrounded outside the oval dual-core signal control main body at the center and are in close contact end to end, and flame-retardant filling ropes are filled in internal gaps among the oval dual-core signal control main bodies to form a cable core; the cable core is externally extruded with a chlorosulfonated polyethylene isolation layer, the chlorosulfonated polyethylene isolation layer is externally wrapped with a flame-retardant composite tape, the flame-retardant tape is externally wrapped with a total shielding layer, and the total shielding layer is externally extruded with an outer sheath.
The above prior art has the following disadvantages: 1. the electric unit is not easy to peel off, and the construction is inconvenient; 2. the structure is unstable and not round.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a twisted double-core cable, which is implemented by the following technical solutions.
A double-core layer stranded cable is provided with an outer protective layer, a plurality of electric units and a central reinforcing piece, wherein the electric units are stranded outside the central reinforcing piece, and the outer protective layer is extruded outside the electric units;
the second power transmission component is composed of a second conductor and a second insulating layer positioned outside the second conductor, a second inserting cavity is formed between the right side of the second conductor and the second insulating layer, and a second inserting opening is formed in the second insulating layer above the second inserting cavity;
along the clockwise direction, the first insulating layer above the previous first insertion opening is inserted into the next second insertion opening, and the first insulating layer above the last first insertion opening is inserted into the first second insertion opening;
the first insulating layer and the second insulating layer are fixedly connected, the connecting positions respectively protrude towards the inner parts of the first insulating layer and the second insulating layer, and the connecting positions are respectively attached to the first electric conductor and the second electric conductor, so that the first electric conductor and the second electric conductor are prevented from rotating in the first insulating layer and the second insulating layer, the positions of the first insertion opening and the first inserting cavity, and the positions of the second insertion opening and the second inserting cavity are ensured.
The double-core stranded cable is characterized in that the first insulating layer and the second insulating layer are integrally formed.
The double-core stranded cable is characterized in that at least one signal wire is arranged in the protruding part.
The double-core-layer stranded cable is characterized in that a first limiting part is arranged on the inner wall of the first insulating layer on the upper side of the first splicing cavity, and a second limiting part is arranged on the inner wall of the second insulating layer on the lower side of the second splicing cavity; the first limiting part and the second limiting part limit each other.
In the above-mentioned twisted cable with two cores, the first insulating layer material is high density polyethylene or medium density polyethylene or flame retardant polyolefin.
In the above-mentioned twisted double-core cable, the first conductor material is copper or aluminum.
In the above-mentioned twisted cable with two cores, the second insulating layer is made of high density polyethylene or medium density polyethylene or flame retardant polyolefin.
In the above-mentioned twisted double-core cable, the second conductor material is copper or aluminum.
In the above-mentioned double-core layer stranded cable, it is characterized in that the outer sheath material is high density polyethylene or medium density polyethylene or flame retardant polyolefin.
In the double-core stranded cable, the central reinforcing member is a phosphated steel wire, a stainless steel wire or a glass fiber reinforced plastic rod.
The embodiment has the following beneficial effects:
1. the stability of the cable can be enhanced by adopting a mode of mutually buckling two adjacent electric units.
2. The output line and the input line cannot be mixed when the double-core structure is adopted for construction wiring, and the loss caused by wrong wiring is reduced.
3. The first insulating layer 211 and the second insulating layer 221 are non-closed, so that an internal conductor can be quickly taken out during construction, a special insulating layer stripping tool is not needed, construction is convenient, and construction efficiency is improved.
4. The electric energy and the electric signal are transmitted in the same cable, and the application range of the cable is expanded; the junction of the first insulating layer 211 and the second insulating layer 22 is recessed inward to facilitate cable opening and signal line extraction therein.
5. The first limiting part 215 and the second limiting part 225 limit each other, so that two adjacent electric units 2 are not easy to separate from each other, and the structural stability of the cable is enhanced.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of an electrical unit in embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of an electrical unit in embodiment 2 of the present invention.
Fig. 5 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 6 is a schematic structural view of the combination of adjacent electrical units in embodiment 3 of the present invention.
In the figure: 1. the outer protective layer, 2, the electric unit, 21, the first power transmission part, 211, the first insulating layer, 212, the first electric conductor, 213, the first plug cavity, 214, the first insertion opening, 215, the first limiting part, 22, the second power transmission part, 221, the second insulating layer, 222, the second electric conductor, 223, the second plug cavity, 224, the second insertion opening, 225, the second limiting part, 23, the connecting part, 24, the signal line, 3, the central reinforcing part.
Detailed Description
Example 1
Referring to fig. 1 and 2, a twisted double-core cable includes an outer sheath 1, a plurality of electrical units 2, and a central reinforcement 3, wherein the electrical units 2 are twisted outside the central reinforcement 3, and the outer sheath 1 is extruded outside the electrical units 2, and is characterized in that the electrical units 2 are composed of a first power transmission part 21 and a second power transmission part 22, the first power transmission part 21 is composed of a first electrical conductor 212 and a first insulating layer 211 located outside the first electrical conductor 212, a first plug cavity 213 is formed between the left side of the first electrical conductor 212 and the first insulating layer 211, and a first insertion opening 214 is formed on the first insulating layer 211 below the first plug cavity 213;
the second power transmission member 22 is composed of a second conductor 222 and a second insulating layer 221 located outside the second conductor 222, a second plug cavity 223 is formed between the right side of the second conductor 212 and the second insulating layer 221, and a second insertion opening 224 is formed in the second insulating layer 221 above the second plug cavity 223;
in the clockwise direction, first insulating layer 211 over the previous first insertion opening 214 is inserted into the next second insertion opening 224, and first insulating layer 211 over the last first insertion opening 214 is inserted into the first second insertion opening 224;
the first insulating layer 211 and the second insulating layer 221 are integrally formed, the connection portions protrude into the first insulating layer 211 and the second insulating layer 221, and the connection portions are attached to the first conductor 212 and the second conductor 212, so that the first conductor 212 and the second conductor 212 are prevented from rotating in the first insulating layer 211 and the second insulating layer 221, and the positions of the first insertion opening 214, the first insertion cavity 213, the second insertion opening 224 and the second insertion cavity 223 are ensured.
Example 2
Referring to fig. 3 and 4, a twisted double-core cable includes an outer sheath 1, a plurality of electrical units 2 and a central reinforcement 3, the electrical units 2 are twisted outside the central reinforcement 3, the outer sheath 1 is extruded outside the electrical units 2, and the twisted double-core cable is characterized in that the electrical units 2 are composed of a first power transmission part 21 and a second power transmission part 22, the first power transmission part 21 is composed of a first conductor 212 and a first insulation layer 211 located outside the first conductor 212, a first plug cavity 213 is formed between the left side of the first conductor 212 and the first insulation layer 211, and a first insertion opening 214 is formed on the first insulation layer 211 below the first plug cavity 213;
the second power transmission member 22 is composed of a second conductor 222 and a second insulating layer 221 located outside the second conductor 222, a second plug cavity 223 is formed between the right side of the second conductor 212 and the second insulating layer 221, and a second insertion opening 224 is formed in the second insulating layer 221 above the second plug cavity 223;
in the clockwise direction, first insulating layer 211 over the previous first insertion opening 214 is inserted into the next second insertion opening 224, and first insulating layer 211 over the last first insertion opening 214 is inserted into the first second insertion opening 224;
the first insulating layer 211 and the second insulating layer 221 are integrally formed, the joints respectively protrude into the first insulating layer 211 and the second insulating layer 221, the joints respectively adhere to the first conductor 212 and the second conductor 212, the first conductor 212 and the second conductor 212 are prevented from rotating in the first insulating layer 211 and the second insulating layer 221, the positions of the first insertion opening 214 and the first inserting cavity 213, the positions of the second insertion opening 224 and the second inserting cavity 223 are ensured, and at least one signal line is arranged in the protruding part.
The embodiment realizes the same-cable transmission of electric energy and electric signals and expands the application range of the cable; the joint of the first insulating layer 211 and the second insulating layer 22 is recessed inwards, so that the signal wire can be conveniently taken out through cable opening.
Example 3
Referring to fig. 5 and 6, a twisted double-core cable includes an outer sheath 1, a plurality of electrical units 2 and a central reinforcement 3, the electrical units 2 are twisted outside the central reinforcement 3, the outer sheath 1 is extruded outside the electrical units 2, and the twisted double-core cable is characterized in that the electrical units 2 are composed of a first power transmission part 21 and a second power transmission part 22, the first power transmission part 21 is composed of a first conductor 212 and a first insulation layer 211 located outside the first conductor 212, a first plug cavity 213 is formed between the left side of the first conductor 212 and the first insulation layer 211, and a first insertion opening 214 is formed on the first insulation layer 211 below the first plug cavity 213;
the second power transmission member 22 is composed of a second conductor 222 and a second insulating layer 221 located outside the second conductor 222, a second plug cavity 223 is formed between the right side of the second conductor 212 and the second insulating layer 221, and a second insertion opening 224 is formed in the second insulating layer 221 above the second plug cavity 223;
a first limiting part 215 is arranged on the inner wall of the first insulating layer 211 on the upper side of the first plugging cavity 213, and a second limiting part 225 is arranged on the inner wall of the second insulating layer 221 on the lower side of the second plugging cavity 223;
in the clockwise direction, the first insulating layer 211 above the previous first insertion opening 214 is inserted into the next second insertion opening 224, the first insulating layer 211 above the last first insertion opening 214 is inserted into the first second insertion opening 224, and the first limiting part 215 and the second limiting part 225 limit each other;
the first insulating layer 211 and the second insulating layer 221 are integrally formed, the connection parts respectively protrude into the first insulating layer 211 and the second insulating layer 221, and the connection parts respectively attach to the first conductor 212 and the second conductor 212, so that the first conductor 212 and the second conductor 212 are prevented from rotating in the first insulating layer 211 and the second insulating layer 221, and the positions of the first insertion opening 214, the first insertion cavity 213, the second insertion opening 224 and the second insertion cavity 223 are ensured.
In this embodiment, the first limiting part 215 and the second limiting part 225 limit each other, so that two adjacent electrical units 2 are not easily separated from each other, and the structural stability of the cable is enhanced.
In the twisted cable with two cores according to any of the embodiments, the first insulating layer 211 is made of high density polyethylene or medium density polyethylene or flame retardant polyolefin.
In the twisted double-core cable according to any of the above embodiments, the first electrical conductor 212 is made of copper or aluminum.
In the twisted cable with two cores according to any of the embodiments, the material of the second insulating layer 221 is high density polyethylene or medium density polyethylene or flame retardant polyolefin.
In the twisted double-core cable according to any of the above embodiments, the second conductor 222 is made of copper or aluminum.
In the twisted cable with two cores according to any of the embodiments described above, the outer sheath 1 is made of high density polyethylene or medium density polyethylene or flame retardant polyolefin.
In the twisted double-core cable according to any of the above embodiments, the central reinforcing member 3 is a phosphated steel wire, a stainless steel wire, or a glass fiber reinforced plastic rod.
In the invention, the stability of the cable can be enhanced by adopting a mode of mutually buckling two adjacent electric units; by adopting a double-core structure, the output line and the input line cannot be mixed during wiring construction, and the loss caused by wrong wiring is reduced; the first insulating layer 211 and the second insulating layer 221 are non-closed, so that an internal conductor can be quickly taken out during construction, a special insulating layer stripping tool is not needed, construction is convenient, and construction efficiency is improved.
The invention solves the problems that the electric unit is not easy to peel off and the construction is inconvenient in the prior art; the structure is unstable.
The above-described embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. A double-core stranded cable is provided with an outer protective layer (1), a plurality of electric units (2) and a central reinforcing piece (3), wherein the electric units (2) are stranded outside the central reinforcing piece (3), the outer protective layer (1) is extruded outside the electric units (2), and the double-core stranded cable is characterized in that the electric units (2) are composed of a first power transmission part (21) and a second power transmission part (22), the first power transmission part (21) is composed of a first electric conductor (212) and a first insulating layer (211) positioned outside the first electric conductor (212), a first inserting cavity (213) is formed between the left side of the first electric conductor (212) and the first insulating layer (211), and a first inserting opening (214) is formed on the first insulating layer (211) below the first inserting cavity (213);
the second power transmission component (22) is composed of a second conductor (222) and a second insulating layer (221) positioned outside the second conductor (222), a second inserting cavity (223) is formed between the right side of the second conductor (212) and the second insulating layer (221), and a second inserting opening (224) is formed in the second insulating layer (221) above the second inserting cavity (223);
in the clockwise direction, the first insulating layer (211) above the previous first insertion opening (214) is inserted into the next second insertion opening (224), and the first insulating layer (211) above the last first insertion opening (214) is inserted into the first second insertion opening (224);
the first insulating layer (211) and the second insulating layer (221) are fixedly connected, the connection positions respectively protrude towards the inside of the first insulating layer (211) and the inside of the second insulating layer (221), and the connection positions are respectively attached to the first conductor (212) and the second conductor (212).
2. A twisted double core cable according to claim 1, wherein said first insulating layer (211) and said second insulating layer (221) are integrally formed.
3. A twisted double core cable according to claim 1 or claim 2, wherein at least one signal line is provided in the protruding portion.
4. A twisted pair cable as claimed in claim 3, wherein a first stopper (215) is provided on the inner wall of the first insulating layer (211) on the upper side of the first splicing chamber (213), and a second stopper (225) is provided on the inner wall of the second insulating layer (221) on the lower side of the second splicing chamber (223); the first limiting part (215) and the second limiting part (225) limit each other.
5. A twisted double core cable according to claim 4, wherein the material of the first insulating layer (211) is high density polyethylene or medium density polyethylene or a flame retardant polyolefin.
6. A twisted double core cable according to claim 5, wherein said first electrical conductor (212) is made of copper or aluminum.
7. A twisted double core cable according to claim 6, wherein the material of the second insulating layer (221) is high density polyethylene or medium density polyethylene or a flame retardant polyolefin.
8. A twisted double core cable according to claim 7, wherein said second electrical conductor (222) is made of copper or aluminum.
9. A twisted double core cable according to claim 8, wherein the outer sheath (1) is made of high density polyethylene or medium density polyethylene or a flame retardant polyolefin.
10. A twisted double core cable according to claim 9, wherein said central strength member (3) is a phosphated steel wire or a stainless steel wire or a glass fiber reinforced plastic rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664008.2A CN115036063A (en) | 2022-06-14 | 2022-06-14 | Double-core layer stranded cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664008.2A CN115036063A (en) | 2022-06-14 | 2022-06-14 | Double-core layer stranded cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115036063A true CN115036063A (en) | 2022-09-09 |
Family
ID=83124199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210664008.2A Withdrawn CN115036063A (en) | 2022-06-14 | 2022-06-14 | Double-core layer stranded cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115036063A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115662682A (en) * | 2022-12-13 | 2023-01-31 | 常熟虞星光电科技有限公司 | Cable with S-shaped protective sleeve |
-
2022
- 2022-06-14 CN CN202210664008.2A patent/CN115036063A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115662682A (en) * | 2022-12-13 | 2023-01-31 | 常熟虞星光电科技有限公司 | Cable with S-shaped protective sleeve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220909 |
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| WW01 | Invention patent application withdrawn after publication |