CN212303135U - Polyvinyl chloride insulation and sheath flame-retardant control cable - Google Patents
Polyvinyl chloride insulation and sheath flame-retardant control cable Download PDFInfo
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- CN212303135U CN212303135U CN202021539880.7U CN202021539880U CN212303135U CN 212303135 U CN212303135 U CN 212303135U CN 202021539880 U CN202021539880 U CN 202021539880U CN 212303135 U CN212303135 U CN 212303135U
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Abstract
The utility model provides a polyvinyl chloride insulation and sheath flame-retardant control cable, which comprises a cable core, a shielding layer, an inner sheath, an armor layer and an outer sheath, wherein the cable core is arranged inside the shielding layer, and the inner sheath, the armor layer and the outer sheath are sequentially wrapped outside the shielding layer; the cable core comprises a plurality of insulating wire cores, a filling layer, a supporting framework and a plurality of reinforcing ribs, each insulating wire core comprises a conductor and an insulating layer sleeved outside the conductor, each supporting framework is a closed ring body formed by a plurality of C-shaped frameworks in a mutually laminated mode, the center and the edge of each supporting framework respectively form a center cavity and an edge cavity for placing the corresponding insulating wire core, the edge cavities are evenly distributed in a surrounding mode by taking the center cavities as axes, the end portions of two adjacent C-shaped frameworks in a laminated mode form V-shaped cavities, and the reinforcing ribs are arranged in the V-shaped cavities and are laminated with the shielding layers.
Description
Technical Field
The utility model relates to the technical field of cables, indicate a polyvinyl chloride is insulating and sheath flame retardant control cable especially.
Background
Typically a cable like rope made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from each other and usually twisted around a center, and being entirely surrounded by a highly insulating covering, the cable being characterized by internal electrical conduction and external insulation. The existing control cable has the following defects: the common polyvinyl chloride insulation and sheath control cable does not have flame retardant property, is easy to cause fire after being heated, decomposes and escapes a large amount of highly toxic and corrosive HCL (hydrogen chloride) gas to generate a large amount of highly toxic dense smoke, and causes great life and property loss; secondly, the existing control cable has the defects of poor toughness and easy breakage during bending.
Therefore, the utility model provides a polyvinyl chloride is insulating and fire-retardant control cable of sheath to solve the problem that above-mentioned exists.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's shortcoming, provide an insulating and sheath flame retardant control cable of polyvinyl chloride.
In order to solve the technical problem, the utility model provides a following technical scheme: a polyvinyl chloride insulation and sheath flame-retardant control cable comprises a cable core, a shielding layer, an inner sheath, an armor layer and an outer sheath, wherein the cable core is arranged inside the shielding layer, and the inner sheath, the armor layer and the outer sheath are sequentially wrapped outside the shielding layer;
the cable core comprises a plurality of insulating wire cores, a filling layer, a supporting framework and a plurality of reinforcing ribs, each insulating wire core comprises a conductor and an insulating layer sleeved outside the conductor, each supporting framework is a closed ring body formed by a plurality of C-shaped frameworks in a mutually laminated mode, the center and the edge of each supporting framework respectively form a center cavity and an edge cavity for placing the corresponding insulating wire core, the edge cavities are evenly distributed in a surrounding mode by taking the center cavities as axes, the end portions of two adjacent C-shaped frameworks in a laminated mode form V-shaped cavities, and the reinforcing ribs are arranged in the V-shaped cavities and are laminated with the shielding layers.
As an optimized technical scheme of the utility model, the inboard of shielding layer is equipped with the recess of fixed strengthening rib.
As an optimized technical scheme of the utility model, inner sheath, oversheath and insulating layer all adopt fire-retardant polyvinyl chloride material to make.
As an optimized technical proposal of the utility model, the conductor is formed by drawing an oxygen-free copper rod.
As an optimized technical scheme of the utility model, the shielding layer is woven for tin-plated or non-tin-plated round copper line and forms, and this weaving density is greater than 80%.
As an optimal technical scheme of the utility model, the armor adopts the galvanized steel strip bilayer to make around the package.
As an optimal technical scheme of the utility model, the filling layer adopts PP packing rope to make.
As an optimal technical scheme, still around being equipped with two-layer nothing halogen around the band between shielding layer and the cable core, this nothing halogen is made around band adoption halogen-free flame retardant material.
The utility model discloses the beneficial effect who reaches is:
1. the utility model provides a pair of polyvinyl chloride is insulating and sheath flame retardant control cable, inner sheath, oversheath and insulating layer adopt fire retardant polyvinyl chloride material to make, make control cable have fire behaviour, reduce the probability that the cable arouses the conflagration after being heated.
2. The utility model provides a polyvinyl chloride insulation and sheath flame retardant control cable, through the support skeleton that sets up, can carry on spacingly to the insulation core, strengthen the stability of control cable inner structure, prevent that a plurality of insulation core from the mistake from dropping together to improve the quality of this control cable, in addition, the support skeleton can also strengthen the mechanical strength of cable, reduce the conductor and take place the condition that deformation and crackle appear;
2. the utility model provides a polyvinyl chloride insulation and sheath flame-retardant control cable, which can limit the reinforcing rib and enhance the stability of the internal structure of the control cable by arranging the groove for fixing the reinforcing rib at the inner side of the shielding layer;
3. the utility model provides an insulating and sheath flame retardant control cable of polyvinyl chloride, through strengthening rib, the braced skeleton that sets up, can increase control cable's pliability and resistant bending performance, prolong its life.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the supporting framework of the present invention;
FIG. 3 is a schematic view of the shielding layer structure of the present invention;
FIG. 4 is a perspective view of the supporting frame of the present invention;
reference numbers in the figures: 1. a shielding layer; 2. an inner sheath; 3. an armor layer; 4. an outer sheath; 5. a groove; 6. a filling layer; 7. a support framework; 8. reinforcing ribs; 9. a conductor; 10. an insulating layer; 11. a "C" shaped backbone; 12. a central cavity; 13. a rim cavity; 14. a "V" shaped cavity.
Detailed Description
The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b): as shown in fig. 1-4, the utility model provides a polyvinyl chloride insulation and sheath flame retardant control cable, including cable core, shielding layer 1, inner sheath 2, armor 3 and oversheath 4, the cable core sets up in shielding layer 1's inside, and inner sheath 2, armor 3 and oversheath 4 wrap up in proper order outside shielding layer 1;
the cable core is composed of a plurality of insulated wire cores, a filling layer 6, a supporting framework 7 and a plurality of reinforcing ribs 8, each insulated wire core comprises a conductor 9 and an insulating layer 10 sleeved outside the conductor 9, the supporting framework 7 is a closed ring body formed by mutually attaching a plurality of C-shaped frameworks 11, the center and the edge of the closed ring body respectively form a central cavity 12 and an edge cavity 13 for placing the insulated wire cores, the edge cavities 13 are uniformly distributed in a surrounding mode by taking the central cavity 12 as an axis, V-shaped cavities 14 are formed at the attaching end portions of two adjacent C-shaped frameworks 11, the reinforcing ribs 8 are arranged in the V-shaped cavities 14 and attached to the shielding layer 1, and the reinforcing ribs 8 can increase the flexibility and the bending resistance of the control cable; the V-shaped cavity 14 and the edge cavity 13 and the central cavity 12 can enhance the stability of the internal structure of the control cable and prevent the insulated wire core and the reinforcing rib 8 from being mistakenly dropped together.
Further, the inboard of shielding layer 1 is equipped with the recess 5 of fixed strengthening rib 8, can carry on spacingly to strengthening rib 8, strengthens control cable inner structure's stability.
Furthermore, the inner sheath 2, the outer sheath 4 and the insulating layer 10 are all made of flame-retardant polyvinyl chloride materials, so that the control cable has flame-retardant performance.
Further, the conductor 9 is formed by drawing an oxygen-free copper rod.
Further, the shielding layer 1 is formed by weaving a tinned or non-tinned round copper wire, and the weaving density is more than 80%.
Further, the armor layer 3 is made of galvanized steel strips through double-layer wrapping.
Furthermore, the filling layer 6 is made of PP filling ropes, so that the cable is round.
Further, still wind between shielding layer 1 and the cable core and be equipped with two-layer no halogen around the band, this no halogen is made around the band adoption and is had no halogen flame retardant material, can prevent that shielding layer 1 from damaging the cable core in the course of working.
The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (8)
1. A polyvinyl chloride insulation and sheath flame-retardant control cable comprises a cable core, a shielding layer (1), an inner sheath (2), an armor layer (3) and an outer sheath (4), and is characterized in that the cable core is arranged inside the shielding layer (1), and the inner sheath (2), the armor layer (3) and the outer sheath (4) are sequentially wrapped outside the shielding layer (1);
the cable core comprises a plurality of insulating wire cores, a filling layer (6), a supporting framework (7) and a plurality of reinforcing ribs (8), each insulating wire core comprises a conductor (9) and an insulating layer (10) sleeved outside the conductor (9), the supporting framework (7) is a closed annular body formed by a plurality of C-shaped frameworks (11) in a mutually-fitted mode, the center and the edge of the closed annular body respectively form a center cavity (12) and an edge cavity (13) for placing the insulating wire cores, the edge cavity (13) is uniformly distributed in a surrounding mode by taking the center cavity (12) as the axis, the end portions of two adjacent C-shaped frameworks (11) in a fitted mode form a V-shaped cavity (14), and the reinforcing ribs (8) are arranged in the V-shaped cavity (14) and are fitted with a shielding layer (1).
2. The polyvinyl chloride insulation and sheath flame-retardant control cable according to claim 1, wherein the inner side of the shielding layer (1) is provided with a groove (5) for fixing the reinforcing rib (8).
3. The polyvinyl chloride insulation and sheath flame-retardant control cable according to claim 1, wherein the inner sheath (2), the outer sheath (4) and the insulation layer (10) are made of flame-retardant polyvinyl chloride material.
4. The pvc insulation and sheath flame retardant control cable of claim 1, wherein said conductor (9) is drawn from an oxygen free copper rod.
5. The pvc insulation and sheath flame retardant control cable according to claim 1, wherein said shielding layer (1) is braided with tin-plated or tin-free round copper wires, the braiding density being greater than 80%.
6. The polyvinyl chloride insulation and sheath flame-retardant control cable according to claim 1, wherein the armor layer (3) is made of galvanized steel strip double-layer wrapping.
7. The polyvinyl chloride insulation and sheath flame-retardant control cable according to claim 1, wherein the filler layer (6) is made of PP filler rope.
8. The polyvinyl chloride insulation and sheath flame-retardant control cable according to claim 1, wherein two layers of halogen-free wrapping tapes are wound between the shielding layer (1) and the cable core, and the halogen-free wrapping tapes are made of halogen-free flame-retardant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021539880.7U CN212303135U (en) | 2020-07-29 | 2020-07-29 | Polyvinyl chloride insulation and sheath flame-retardant control cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021539880.7U CN212303135U (en) | 2020-07-29 | 2020-07-29 | Polyvinyl chloride insulation and sheath flame-retardant control cable |
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| Publication Number | Publication Date |
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| CN212303135U true CN212303135U (en) | 2021-01-05 |
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| CN202021539880.7U Active CN212303135U (en) | 2020-07-29 | 2020-07-29 | Polyvinyl chloride insulation and sheath flame-retardant control cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985542A (en) * | 2021-09-27 | 2022-01-28 | 杭州富通通信技术股份有限公司 | Long-distance aerial optical cable |
| CN114023502A (en) * | 2021-12-24 | 2022-02-08 | 扬州市金阳光电缆有限公司 | Halogen-free low-smoke B1-grade flame-retardant fire-resistant shielding type control cable |
| WO2023019791A1 (en) * | 2021-08-16 | 2023-02-23 | 飞洲智造(浙江)科技有限公司 | Novel high-strength composite cable |
-
2020
- 2020-07-29 CN CN202021539880.7U patent/CN212303135U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023019791A1 (en) * | 2021-08-16 | 2023-02-23 | 飞洲智造(浙江)科技有限公司 | Novel high-strength composite cable |
| CN113985542A (en) * | 2021-09-27 | 2022-01-28 | 杭州富通通信技术股份有限公司 | Long-distance aerial optical cable |
| CN114023502A (en) * | 2021-12-24 | 2022-02-08 | 扬州市金阳光电缆有限公司 | Halogen-free low-smoke B1-grade flame-retardant fire-resistant shielding type control cable |
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