CN218568457U - Marine composite shielding type low-smoke halogen-free flame-retardant cable - Google Patents
Marine composite shielding type low-smoke halogen-free flame-retardant cable Download PDFInfo
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- CN218568457U CN218568457U CN202221612611.8U CN202221612611U CN218568457U CN 218568457 U CN218568457 U CN 218568457U CN 202221612611 U CN202221612611 U CN 202221612611U CN 218568457 U CN218568457 U CN 218568457U
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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
Abstract
A composite shielding type low-smoke halogen-free flame-retardant cable for ships is structurally characterized in that a core insulating layer, a first wrapping layer, a shielding layer, a first metal braided layer, a second wrapping layer, an inner sheath, a third metal braided layer, a third wrapping layer and an outer sheath are sequentially wrapped outside a single core; the single wire core is formed by wrapping a wire core insulating layer outside a wire core conductor; the core conductor is a second stranded tinned copper round conductor; the insulating layer is crosslinked polyethylene; the first wrapping layer is a low-smoke halogen-free flame-retardant tape; the shielding layer is a copper-plastic composite belt; the first metal braid is braided by tinned copper wires; the second metal braid is braided by tinned copper wires; the second wrapping layer is a low-smoke halogen-free flame-retardant tape; the inner sheath is low-smoke halogen-free flame-retardant cross-linked polyolefin; the third metal braid is braided by tinned copper wires; the third lapping layer is made of non-woven fabric; the outer sheath is low-smoke halogen-free flame-retardant cross-linked polyolefin. The cable has good shielding property, can prevent electromagnetic interference and accurately transmit information.
Description
Technical Field
The technical scheme belongs to the technical field of cables, and particularly relates to a composite shielding type low-smoke halogen-free flame-retardant cable for a ship.
Background
The space of the ship is limited, the relative area capacity is small, and various required instrument cables and electric equipment use a plurality of wires and cables which are often laid together. Due to the limited space of the ship, some power cables are used as a physical medium for transmitting carrier signals, so that the use amount of the cables is reduced. This requires that the marine power cable has a stronger shielding performance, and can effectively resist external electromagnetic interference, and avoid transmission deviation.
Meanwhile, the ship uses the cable to have higher requirements on low smoke, zero halogen, flame retardance and the like. How to satisfy the requirement of low smoke and zero halogen, fire-retardant, resistant oil and strong shielding of marine cable simultaneously on the basis of satisfying power cable's basic function is the technical problem that solves.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a marine compound shielding type low smoke and zero halogen flame retarded cable, the external diameter scope of cable is 10.0 ~ 35.0mm, and the structure of cable is: wrap up sinle silk insulating layer 2, firstly around covering 3, shielding layer 4, first metallic braid 5, second metallic braid 6, second around covering 7, inner sheath 8, third metallic braid 9, third around covering 10, oversheath 11 outward in proper order by sinle silk conductor 1.
The core conductor 1 is a second tin-plated copper round conductor;
the section area of the core conductor 1 is 1-300 mm 2 ；
The conductor of the wire core is formed by twisting tin-plated copper monofilaments, and the twisted pitch-diameter ratio and other parameters range from 10 to 40;
the diameter of the tin-plated copper monofilament forming the core conductor is 0.43-2.52 mm;
the conductor adopts a tin-plated copper conductor, so that the surface oxidation of the conductor is prevented, and the conductivity of the conductor is prevented from being influenced.
The wire core insulating layer 2 is made of crosslinked polyethylene insulating materials, and the thickness of the wire core insulating layer 2 is 0.7 mm-1.8 mm;
the first wrapping layer 3 is formed by wrapping a low-smoke halogen-free flame-retardant tape, and the thickness of the low-smoke halogen-free flame-retardant tape is 0.2mm; the average overlapping rate is not less than 25%;
the shielding layer 4 is formed by lapping of a copper-plastic composite tape, and the average lapping overlapping rate is not less than 25%;
the first metal braided layer 5 is formed by braiding tinned copper wires, and the braiding density is not less than 81.8%.
The second metal braid 6 is formed by weaving tinned copper wires, and the weaving density is not less than 81.8%.
The second wrapping layer 7 is formed by wrapping a low-smoke halogen-free flame-retardant belt, and the thickness of the low-smoke halogen-free flame-retardant belt is 0.2mm; the average overlapping rate is not less than 25%;
the inner sheath 8 is made of low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material, and the thickness of the inner sheath is 1.0-1.7 mm;
the third metal braided layer 9 is formed by braiding tinned copper wires, and the braiding density is not less than 81.8%;
the three-layer metal weaving can ensure the radial distribution of an electric field and reduce the interference of an external electromagnetic field.
The third wrapping layer 10 is formed by wrapping a low-smoke halogen-free flame-retardant tape, the thickness of the low-smoke halogen-free flame-retardant tape is 0.2mm, and the average overlapping rate is not less than 25%;
the outer sheath 11 is made of a low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material; the thickness of the outer sheath is 1.0 mm-1.3 mm.
First around covering, second around covering and third around covering adopt the fire-retardant area of low smoke and zero halogen, guarantee low cigarette, there is no halogen. The inner sheath protects the insulation and the inner layer structure from being damaged; the outer sheath mainly protects the whole cable.
By adopting the structure, the cable is particularly suitable for ships, can meet the requirements of carrier power cables on electromagnetic shielding, has the characteristics of electromagnetic interference resistance, flame retardance, oil resistance and the like of the ship cable, and has better bending characteristic, so that the cable can be stably arranged in a narrow space of the ship. In addition, the material used by the cable does not contain halogen, and has the characteristic of environmental protection.
Drawings
FIG. 1 is a schematic radial cross-sectional view of the cable of this example;
in the figure: sinle silk conductor 1, sinle silk insulating layer 2, first around covering 3, shielding layer 4, first metallic braid 5, second metallic braid 6, second around covering 7, inner sheath 8, third metallic braid 9, third around covering 10, oversheath 11.
Detailed Description
The technical solution is further explained below with reference to specific embodiments as follows:
referring to fig. 1, the outer diameter of the cable for the reinforced shielding ship is in the range of 15.0-40.0 mm. The structure of the cable is as follows: the cable comprises a core conductor 1, a core insulating layer 2, a first wrapping layer 3, a shielding layer 4, a first metal braided layer 5, a second metal braided layer 6, a second wrapping layer 7, an inner sheath 8, a third metal braided layer 9, a third wrapping layer 10 and an outer sheath 11;
the core conductor 1 is a second tin-plated copper round conductor;
the wire core insulating layer 2 is made of crosslinked polyethylene insulating materials, and the thickness of the wire core insulating layer 2 is 0.7 mm-1.8 mm;
the first wrapping layer 3 is formed by wrapping a low-smoke halogen-free flame-retardant tape, and the thickness of the low-smoke halogen-free flame-retardant tape is 0.2mm; the average overlapping rate is not less than 25%;
the shielding layer 4 is formed by lapping of a copper-plastic composite tape, and the average lapping rate is not less than 25%;
the first metal braid 5 is formed by weaving tinned copper wires, and the weaving density is not less than 81.8%.
The second metal braid 6 is formed by weaving tinned copper wires, and the weaving density is not less than 81.8%.
The second wrapping layer 7 is formed by wrapping a low-smoke halogen-free flame-retardant tape, and the thickness of the low-smoke halogen-free flame-retardant tape is 0.2mm; the average overlapping rate is not less than 25%;
the inner sheath 8 is made of low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material, and the thickness of the inner sheath is 1.0-1.7 mm;
the third metal braid layer 9 is formed by weaving tinned copper wires, and the weaving density is not less than 81.8%;
the third wrapping layer 10 is formed by wrapping a low-smoke halogen-free flame-retardant tape, the thickness of the low-smoke halogen-free flame-retardant tape is 0.2mm, and the average overlapping rate is not less than 25%;
the outer sheath 11 is made of a low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material; the thickness of the outer sheath is 1.0 mm-1.3 mm.
In the cable of this example, the core conductor has a cross-sectional area of 25mm 2 ：
The outer diameter of the cable is 18mm;
the structural parameters of the core conductor 1 are as follows: 7/2.14mm
The nominal thickness of the core insulation layer 2 is 0.90mm, the thickness of the thinnest part is not less than 0.71mm, and the difference between the maximum thickness and the thinnest part is not more than 0.50mm; the wire core insulating layer is made of a crosslinked polyethylene insulating material (in the example, the brand/model can be YJG-3);
the flame-retardant tape of the first wrapping layer 3 can be a low-smoke halogen-free flame-retardant tape, and the wrapping direction is the right direction; the thickness of the wrapping tape is 0.2mm;
the lapping direction of the copper-plastic composite tape of the shielding layer 4 is left, the width is 35mm, and the thickness is 0.1mm;
the weaving density of the first metal weaving layer 5 is not less than 81.8%, and the metal weaving layer is formed by weaving tinned copper wires with the wire diameter of 0.20 mm;
the weaving density of the second metal weaving layer 6 is not less than 81.8%, and the metal weaving layer is formed by weaving tinned copper wires with the wire diameter of 0.20 mm;
the flame-retardant tape of the second wrapping layer 7 can be a low-smoke halogen-free flame-retardant tape, and the wrapping direction is the right direction; the thickness of the wrapping tape is 0.2mm;
the average thickness of the inner sheath 8 is 1.1mm, and the thickness of the thinnest part is not less than 0.84mm; the inner sheath 8 is made of low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material (in the example, the brand/model can be FHW-90C);
the weaving density of the third metal weaving layer 9 is not less than 81.8%, and the metal weaving layer is formed by weaving tinned copper wires with the wire diameter of 0.20 mm;
the flame retardant tape of the third wrapping layer 10 can specifically adopt a low-smoke halogen-free flame retardant tape, and the wrapping direction is the right direction; the thickness of the wrapping tape is 0.2mm;
the average thickness of the outer sheath 11 is 0.9mm, and the thickness of the thinnest part is not less than 0.67mm; the outer sheath 11 is made of a low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material (in this example, the grade/model may be FHW-90C).
The experimental results of the cable are shown in the table below, and it can be seen that the performance of the cable is better than the standard value.
Claims (6)
1. The utility model provides a marine compound shield type low smoke and zero halogen flame retarded cable, the external diameter scope of cable is 15.0 ~ 40.0mm, and the structure of characterized by cable is: the cable core conductor is sequentially wrapped with a cable core insulating layer, a first wrapping layer, a shielding layer, a first metal braided layer, a second wrapping layer, an inner sheath, a third metal braided layer, a third wrapping layer and an outer sheath;
the core conductor is a second round tinned copper conductor, and the sectional area of the core conductor is 1-300 mm 2 ；
The wire core insulating layer is made of a crosslinked polyethylene insulating material, and the thickness of the wire core insulating layer is 0.7 mm-1.8 mm;
the first wrapping layer is formed by wrapping a low-smoke halogen-free flame-retardant tape, and the average overlapping rate of the wrapping is not less than 25%;
the shielding layer is formed by lapping of a copper-plastic composite tape, and the average lapping rate is not less than 25%;
the first metal braid layer is formed by weaving tinned copper wires, and the weaving density is not less than 81.8%;
the second metal braid layer is formed by weaving tinned copper wires, and the weaving density is not less than 81.8%;
the second wrapping layer is formed by wrapping a low-smoke halogen-free flame-retardant tape, and the average overlapping rate of the wrapping is not less than 25%;
the inner sheath is made of low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material, and the thickness of the inner sheath is 1.0 mm-1.7 mm;
the third metal braid is formed by weaving tinned copper wires, and the weaving density is not less than 81.8%;
the third wrapping layer is formed by wrapping a low-smoke halogen-free flame-retardant tape, and the average overlapping rate of the wrapping is not less than 25%;
the outer sheath is made of low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath material, and the thickness of the outer sheath is 1.0-1.3 mm.
2. The marine composite shielding type low-smoke halogen-free flame-retardant cable according to claim 1, characterized in that the core conductor is formed by stranding tinned copper monofilaments, the stranding pitch diameter ratio and other parameters range from 10 to 40, and the diameter of the tinned copper monofilaments is 0.43 to 2.52mm.
3. The marine composite shielding type low-smoke halogen-free flame-retardant cable according to claim 1, characterized in that the thicknesses of the low-smoke halogen-free flame-retardant tapes of the first, second and third wrapping layers are all 0.2mm; the wrapping direction of the first wrapping layer is the right direction; the wrapping direction of the second wrapping layer is the right direction; the third is right around the covering around the package direction.
4. The marine composite shielding type low-smoke halogen-free flame-retardant cable according to claim 1, characterized in that the first, second and third metal braided layers are all formed by braiding tinned copper wires with a wire diameter of 0.20 mm.
5. The marine composite shielded low-smoke halogen-free flame-retardant cable according to claim 1, wherein the cross-sectional area of the core conductor is 25mm 2 The outer diameter of the cable is 18mm;
the nominal thickness of the core insulation layer is 0.90mm, the thickness of the thinnest part is not less than 0.71mm, and the difference between the maximum thickness and the thinnest part is not more than 0.50mm.
6. The marine composite shielding type low-smoke halogen-free flame-retardant cable according to claim 1, wherein the wrapping direction of the copper-plastic composite tape of the shielding layer is left, the width of the copper-plastic composite tape is 35mm, and the thickness of the copper-plastic composite tape is 0.1mm; the average thickness of the inner sheath is 1.1mm, and the thickness of the thinnest part is not less than 0.84mm; the average thickness of the outer sheath is 0.9mm, and the thickness of the thinnest part is not less than 0.67mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221612611.8U CN218568457U (en) | 2022-06-25 | 2022-06-25 | Marine composite shielding type low-smoke halogen-free flame-retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221612611.8U CN218568457U (en) | 2022-06-25 | 2022-06-25 | Marine composite shielding type low-smoke halogen-free flame-retardant cable |
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| Publication Number | Publication Date |
|---|---|
| CN218568457U true CN218568457U (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221612611.8U Active CN218568457U (en) | 2022-06-25 | 2022-06-25 | Marine composite shielding type low-smoke halogen-free flame-retardant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218568457U (en) |
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- 2022-06-25 CN CN202221612611.8U patent/CN218568457U/en active Active
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