CN214336377U - Special shielded waterproof flexible cable - Google Patents
Special shielded waterproof flexible cable Download PDFInfo
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- CN214336377U CN214336377U CN202120379387.1U CN202120379387U CN214336377U CN 214336377 U CN214336377 U CN 214336377U CN 202120379387 U CN202120379387 U CN 202120379387U CN 214336377 U CN214336377 U CN 214336377U
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Abstract
A special shielded waterproof flexible cable is structurally characterized in that a conductor coated with an insulating layer forms a wire core; a cable core is formed by twisting a plurality of wire cores and a filling rope; the cable core is covered with an inner sheath; the shielding layer formed by weaving tinned copper wires is arranged outside the inner sheath; the outside of the shielding layer is extruded with sheathing material to form an outer sheath; the conductor is a 5 th bare copper conductor or a tinned copper conductor which meets the IEC60228 requirements; the insulating layer is made of polyvinyl chloride insulating materials, and the nominal thickness range of the insulating layer is 0.5-0.8 mm; the filling rope is a PP filling rope or a non-vulcanized rubber strip; the filling rope is filled at the center position according to needs, and the side is not filled; the inner sheath is made of polyethylene sheath material; the nominal thickness range of the inner sheath is 0.8-1.2 mm; the nominal diameter range of the tinned copper wire in the shielding layer is 0.15-0.20 mm, and the weaving density is not less than 80%; the sheath material of the outer sheath is polyvinyl chloride sheath material, and the nominal thickness range of the outer sheath is 0.6-1.2 mm.
Description
Technical Field
The utility model relates to a special type connecting cable, in particular to waterproof flexible cable of special type shielding belongs to cable technical field.
Background
Due to special requirements of the laying environment (for example, the cable needs to be laid underwater, the interior of the cable cannot be permeated by water vapor to ensure the safety of electrical performance, a safety accident is prevented, a shielding layer needs to be prevented from being oxidized and corroded during underwater laying, and in addition, the roundness requirement of the cable is higher to ensure the sealing performance and the attractiveness of the cable and the inlet and outlet of the laying environment), part of shielded signal cables cannot meet the requirements of underwater laying.
A special signal shielding cable product with a waterproof function has been developed into a wide variety of new cable fields. In order to prevent potential safety hazards caused by cable flooding, special cables need to be designed to solve the problem.
Disclosure of Invention
The utility model aims at providing a special type shielding waterproof flexible cable, it not only needs the strict control external diameter, and cable roundness has reliable electrical property, shielding signal performance, waterproof performance, still has ageing resistance performance etc. simultaneously. In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a special shielded waterproof flexible cable, the external diameter scope of this cable is 8.0-18.0 mm generally; the structure is as follows:
a conductor 1 coated with an insulating layer 2 forms a wire core 3;
a cable core 5 is formed by twisting a plurality of wire cores 3 and filling ropes 4;
the cable core 5 is coated with an inner sheath 6;
the shielding layer 7 formed by weaving tinned copper wires is arranged outside the inner sheath 6;
the shielding layer 7 is externally extruded with sheath materials to form an outer sheath 8;
the conductor is a 5 th bare copper conductor or a tinned copper conductor meeting the IEC60228 requirements;
the insulating layer is made of polyvinyl chloride insulating materials, and the nominal thickness range of the insulating layer is 0.5-0.8 mm;
the filling rope is a PP filling rope or a non-vulcanized rubber strip; the filler cord is filled as needed at the center and not filled at the side ("center position filled as needed" means that if the axial position of the cable has a core, the filler cord is between the center core and the outer core, and the axial position has no filler cord "" side not filled "means that the filler cord is not arranged between the outer side (the side facing away from the axial line) of each core and the inner sheath).
The inner sheath is made of polyethylene sheath material; the inner sheath extrusion mode is extrusion type production; the nominal thickness of the inner sheath is 1.0 mm;
the nominal diameter range of the tinned copper wire in the shielding layer is 0.15-0.20 mm, and the weaving density is not less than 80%;
the sheath material of the outer sheath is polyvinyl chloride sheath material, and the nominal thickness range of the outer sheath is 0.6-1.2 mm.
The cable core is directly wrapped by the inner sheath of the cable, and sheath materials of the inner sheath are embedded into an inner gap of the cable core (realized by an extrusion type production mode during production), so that the inner gap of the cable core is effectively reduced, and excessive water is prevented from entering the cable core from two ends of the cable; the material characteristic of polyethylene inner sheath prevents water from permeating the cable core from the inner sheath, and this technical essential makes this cable have outstanding waterproof performance.
By adopting the structure, the electric performance is ensured, and the outer diameter is controlled in a smaller range.
Preferably, the conductor 1 is a category 5 bare copper soft conductor or a tinned soft copper conductor meeting the IEC60228 requirements;
the bare copper soft conductor is formed by twisting a plurality of bare copper monofilaments, and the twisting pitch-diameter ratio is 20-25 times;
or the tin-plated soft copper conductor is formed by stranding a plurality of tin-plated copper monofilaments, and the stranding pitch-diameter ratio is 20-25 times;
the nominal diameter of both the bare copper filaments and the tinned copper filaments constituting the conductor ranged from 0.14mm to 0.25 mm.
Further, the ratio of the twisting pitch to the diameter of the cable core 5 is 12-16 times.
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
the insulating material is a polyvinyl chloride insulating material with high electrical property, so that the cable has excellent electrical property and good ageing resistance, is suitable for construction of equipment needing a circuit protection function indoors and outdoors, prolongs the service life of the cable, ensures the product performance of the cable by matching a thin-wall extrusion process with the high-electrical-property insulating material, reduces the outer diameter, and is more suitable for circuit installation in a narrow area;
the inner sheath is made of polyethylene sheath material, so that the waterproof performance is excellent; meanwhile, the twisted structure of the wire core and the conductor and the inner sheath of the extrusion structure ensure the roundness of the appearance of the cable, and are suitable for use occasions with high requirements on the roundness;
the shielding layer is braided and shielded by adopting a tinned copper wire, so that the shielding layer has excellent shielding anti-interference effect and corrosion-resistant effect;
the sheath adopts the polyvinyl chloride sheath, increases special properties such as environmental protection performance, low temperature resistance, ultraviolet resistance, mineral oil resistance according to actual environment, makes the cable have better environmental suitability and higher security.
The cable structure gives consideration to all functions/performance structures, and is a circuit protection connecting system which is more suitable for channels, pipelines, bridges, underwater and other laying environments needing water resistance, electromagnetic interference resistance and the like on the premise of ensuring the electrical performance and mechanical performance of the cable.
Drawings
Fig. 1 is a schematic radial cross-sectional structure of the cable according to the embodiment.
In the figure: conductor 1, insulating layer 2, sinle silk 3, filler rope 4, cable core 5, inner sheath 6, shielding layer 7, oversheath 8.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The embodiment is shown in figure 1, the outer diameter range of the special shielded waterproof flexible cable is 8.0-18.0 mm; the structure is as follows: a conductor 1 coated with an insulating layer 2 forms a wire core 3; a cable core 5 is formed by twisting a plurality of wire cores 3 and filling ropes 4; the cable core 5 is coated with an inner sheath 6; the shielding layer 7 formed by weaving tinned copper wires is arranged outside the inner sheath 6; the outside of the shielding layer 7 is extruded with sheath material to form an outer sheath 8.
The conductor is a 5 th bare copper conductor or a tinned copper conductor meeting the IEC60228 requirements;
the insulating layer is made of polyvinyl chloride insulating materials, and the nominal thickness range of the insulating layer is 0.5-0.8 mm;
the filling rope is a PP filling rope or a non-vulcanized rubber strip; the filling rope is filled at the center position according to needs, and the side is not filled;
the inner sheath is made of polyethylene sheath material; the nominal thickness range of the inner sheath is 0.8-1.2 mm;
the nominal diameter range of the tinned copper wire in the shielding layer is 0.15-0.20 mm, and the weaving density is not less than 80%;
the sheath material of the outer sheath is polyvinyl chloride sheath material, and the nominal thickness range of the outer sheath is 0.6-1.2 mm.
The conductor 1 is a category 5 bare copper soft conductor or a tinned soft copper conductor meeting IEC60228 requirements;
the bare copper soft conductor is formed by twisting a plurality of bare copper monofilaments, and the twisting pitch-diameter ratio is 20-25 times;
or the tin-plated soft copper conductor is formed by stranding a plurality of tin-plated copper monofilaments, and the stranding pitch-diameter ratio is 20-25 times;
the nominal diameter of both the bare copper filaments and the tinned copper filaments constituting the conductor ranged from 0.14mm to 0.25 mm.
The stranding pitch diameter ratio of the cable core 5 is 12-16 times.
In this example, there are 4 cores 3 stranded around the same axis, with the filler cords at the axial locations. The outer diameter of the cable of this example is 10.7mm (calculated theoretically by design).
The nominal thickness of the insulating layer is 0.6 mm; the nominal thickness of the inner sheath is 1.0 mm; the nominal diameter range of the tinned copper wire in the shielding layer is 0.16mm, and the weaving density is 86%; the nominal thickness of the outer sheath is 1.0 mm. The conductor 1 is a category 5 tinned soft copper conductor meeting the IEC60228 requirements; the tin-plated soft copper conductor is formed by stranding a plurality of tin-plated copper monofilaments with the nominal diameter of phi 0.20m, and the stranding pitch-diameter ratio is 22 times. The twist pitch ratio of the cable core 5 is 14 times.
This cable need pay attention to when using: the cable only has radial waterproof capability, can not be used by soaking the whole root or the end in water, and the connector is not allowed in the middle of the cable, and the water depth is not more than 3 meters.
After the structure and the materials are adopted, the special performances such as environmental protection performance, low temperature resistance, ultraviolet resistance, mineral oil resistance and the like are added according to the actual environment under the same condition, so that the cable has better environmental adaptability and higher safety, and the outer diameter is controlled in a smaller range. Making the cable more suitable for: the channel, pipeline, bridge, underwater, etc. need the circuit protection connecting system of laying environment such as waterproof, electromagnetic interference resistance, etc..
In this example, the inner sheath is formed by extruding the inner sheath material in an extrusion type production process, and the outer sheath is formed by extruding the sheath material in an extrusion tube type production process. The insulation material may be JR-70PVC polyvinyl chloride insulation or a derivative designation of the designation. The inner jacket material may be HDPE medium density polyethylene jacket material or a derivative designation thereof. The sheath material can be HR-70PVC sheath material or derivative grade of the grade, and the PVC sheath has the characteristics of environmental protection, ageing resistance and the like.
The shielding performance test requirements of the cable of the example are as follows, and the conclusion is "qualified":
screening inhibition coefficient test: according to the TICW 6 requirement test method, the test result is that the shielding inhibition coefficient is less than or equal to 0.01.
Mechanical properties after insulation and sheath aging: according to the GB/T2951.11 requirement test method, the test result is that the tensile strength is larger than or equal to 10.0N/mm, and the elongation at break is larger than or equal to 150%.
Waterproof performance: the cable is immersed in the water tank for 7 days (the two ends of the cable are exposed out of the water surface), and the insulating surface has no water mark after the cable is taken out and the sheath is stripped.
The present invention is not limited to the above embodiments, and all technical solutions formed by equivalent or equivalent replacement fall into the protection scope claimed in the present invention.
Claims (6)
1. A special shielded waterproof flexible cable has an outer diameter of 8.0-18.0 mm; it is characterized in that:
a conductor (1) coated with an insulating layer (2) forms a wire core (3);
a cable core (5) is formed by twisting a plurality of wire cores (3) and filling ropes (4);
the cable core (5) is coated with the inner sheath (6);
a shielding layer (7) formed by weaving tinned copper wires is arranged outside the inner sheath (6);
an outer sheath (8) formed by extruding sheath materials is arranged outside the shielding layer (7);
the conductor is a 5 th bare copper conductor or a tinned copper conductor meeting the IEC60228 requirements;
the insulating layer is made of polyvinyl chloride insulating materials, and the nominal thickness range of the insulating layer is 0.5-0.8 mm;
the filling rope is a PP filling rope or a non-vulcanized rubber strip; the filling rope is filled at the center position according to needs, and the side is not filled;
the inner sheath is made of polyethylene sheath material; the nominal thickness range of the inner sheath is 0.8-1.2 mm;
the nominal diameter range of the tinned copper wire in the shielding layer is 0.15-0.20 mm, and the weaving density is not less than 80%;
the sheath material of the outer sheath is polyvinyl chloride sheath material, and the nominal thickness range of the outer sheath is 0.6-1.2 mm.
2. A special shielded waterproof flexible cable as claimed in claim 1, wherein said conductor (1) is a bare copper conductor of type 5 or a tinned soft copper conductor in conformity with IEC 60228;
the bare copper soft conductor is formed by twisting a plurality of bare copper monofilaments, and the twisting pitch-diameter ratio is 20-25 times;
or the tin-plated soft copper conductor is formed by stranding a plurality of tin-plated copper monofilaments, and the stranding pitch-diameter ratio is 20-25 times;
the nominal diameter of both the bare copper filaments and the tinned copper filaments constituting the conductor ranged from 0.14mm to 0.25 mm.
3. A special type shielding waterproof flexible cable as claimed in claim 1, wherein the twist pitch ratio of the cable core (5) is 12 to 16 times.
4. A special shielded waterproof flexible cable as claimed in claim 1, wherein the theoretical outer diameter of the cable is 10.7 mm;
the nominal thickness of the insulating layer is 0.6 mm;
the nominal thickness of the inner sheath is 1.0 mm;
the nominal diameter range of the tinned copper wire in the shielding layer is 0.16mm, and the weaving density is 86%;
the nominal thickness of the outer sheath is 1.0 mm.
5. A special shielded waterproof flexible cable as claimed in claim 4, wherein said conductor (1) is a category 5 tin-plated soft copper conductor in accordance with IEC 60228; the tin-plated soft copper conductor is formed by stranding a plurality of tin-plated copper monofilaments with the nominal diameter of phi 0.20m, and the stranding pitch-diameter ratio is 22 times.
6. A special shielded waterproof flexible cable as claimed in claim 1, wherein the cable core (5) has a lay ratio of 14 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120379387.1U CN214336377U (en) | 2021-02-20 | 2021-02-20 | Special shielded waterproof flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120379387.1U CN214336377U (en) | 2021-02-20 | 2021-02-20 | Special shielded waterproof flexible cable |
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| Publication Number | Publication Date |
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| CN214336377U true CN214336377U (en) | 2021-10-01 |
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| CN202120379387.1U Active CN214336377U (en) | 2021-02-20 | 2021-02-20 | Special shielded waterproof flexible cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613532A (en) * | 2022-04-25 | 2022-06-10 | 远东电缆有限公司 | Oil-resistant cold-resistant flexible cable and preparation method and application thereof |
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2021
- 2021-02-20 CN CN202120379387.1U patent/CN214336377U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613532A (en) * | 2022-04-25 | 2022-06-10 | 远东电缆有限公司 | Oil-resistant cold-resistant flexible cable and preparation method and application thereof |
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