CN209912542U - Elastomer sheath super-flexible special cable - Google Patents

Abstract

An elastomer sheath super-flexible special cable is structurally characterized in that: the main wire core, the control wire core and the filler are twisted to form a cable core; the non-woven fabric layer and the outer sheath are sequentially wrapped outside the cable core; the main wire core is formed by a first conductor coated with a first insulating layer; the control wire core is formed by a second conductor coated with a second insulating layer; the first conductor and the second conductor are type 6 bare copper soft conductors or tinned soft copper conductors which meet the IEC60228 requirements; the first insulating layer is formed by extruding and wrapping a 70 ℃ PVC-butyronitrile elastomer composite insulating material; the second insulating layer is formed by extruding and wrapping a low-density polyethylene insulating material at the temperature of 70 ℃; the outer sheath is formed by extruding and wrapping a 70 ℃ PVC-butyronitrile elastomer composite sheath material. After adopting above-mentioned structure and material, this cable has better environmental suitability and higher security under the same condition, has guaranteed simultaneously that the external diameter control is in less scope.

Description

Elastomer sheath super-flexible special cable

Technical Field

The utility model relates to a special type connecting cable, in particular to super flexible special type cable of elastomer sheath belongs to cable technical field.

Background

With the development of science and technology, the market of finished cables with super-flexibility functions is wider and wider, but due to the fact that products in the current market of the cables are diversified and complicated, applied circuit protection cables are developed into a wide variety of new cable fields.

In order to prevent lightning stroke and interference of various power lines and telephone lines, ensure normal communication and personal safety of users, set over-current protection and over-voltage protection, and simultaneously meet the requirement of higher flexibility of the used cable, a special cable is matched to solve the problems.

Disclosure of Invention

The utility model aims at providing an elastomer sheath super flexible special type cable, it not only needs the strict control external diameter, has reliable electrical property, and characteristics such as ageing resistance can still have simultaneously to the compliance of superelevation. In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides an ultra-flexible special cable of elastomer sheath, characterized by structure is: the main wire core, the control wire core and the filler are twisted to form a cable core; the non-woven fabric layer and the outer sheath are sequentially wrapped outside the cable core, and the outer diameter range of the cable is 18.2-23.1 mm;

the main wire core is formed by a first conductor coated with a first insulating layer, and the nominal diameter of the first conductor ranges from 2.7 mm to 3.3 mm;

a control wire core is formed by a second conductor coated with a second insulating layer, and the nominal diameter range of the second conductor is 1.3-1.6 mm;

the first conductor and the second conductor are type 6 bare copper soft conductors or tinned soft copper conductors which meet the IEC60228 requirements;

the first insulating layer is formed by extruding and wrapping a 70 ℃ PVC-butyronitrile elastomer composite insulating material, and the nominal thickness range of the first insulating layer is 0.8-1.0 mm;

the second insulating layer is formed by extruding and wrapping a low-density polyethylene insulating material at the temperature of 70 ℃, and the nominal thickness range of the second insulating layer is 0.6-0.7 mm;

the outer sheath is formed by extruding PVC-butyronitrile elastomer composite sheath material at 70 ℃, and the nominal thickness range of the outer sheath is 1.8-2.4 mm.

Further:

the bare copper soft conductor is formed by twisting a plurality of bare copper monofilaments, the twist pitch diameter ratio is 18-25 times, and the nominal diameter range of the bare copper monofilaments is phi 0.14 mm-phi 0.20 mm;

the tinned soft copper conductor is formed by twisting a plurality of tinned copper monofilaments, the twisting pitch-diameter ratio is 18-25 times, and the nominal diameter range of the tinned copper monofilaments is phi 0.14 mm-phi 0.20 mm.

The stranding pitch diameter ratio of the cable core is 8-12 times;

the non-woven fabrics layer comprises the non-woven fabrics of overlapping lapping, and non-woven fabrics nominal thickness 0.1mm, and the rate of overlapping is not less than 25%.

The filler is a PP filler rope.

Is characterized in that the overlapping lapping rate of the non-woven fabric layers is 28-30%.

The number of the main wire cores is multiple, and the number of the control wire cores is multiple;

setting the circle center of the radial section of the cable as a point o; the circumference of the plurality of main wire cores takes the point o as the circle center, and the main wire cores are adjacent in sequence; the circle where the control wire cores are located takes the point o as the circle center; each control wire core is adjacent in sequence, a first control wire core is adjacent to a last main wire core, and the first main wire core is adjacent to the last control wire core.

After the technical scheme is adopted, the utility model discloses following beneficial effect has:

the conductor adopts a category 6 bare copper conductor or a tinned copper conductor, so that the flexibility of the cable is improved, and the cable is more suitable for laying a twisting area; the insulation adopts a high-electrical-property butyronitrile elastomer composite insulating material and a low-density polyethylene insulating material, 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 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 sheath adopts the compound sheath of extrusion formula butyronitrile elastomer, increases special properties such as environmental protection performance, low temperature resistance ability, ultraviolet resistance ability, mineral oil resistance according to actual environment, makes the cable have better environmental suitability, higher security and higher compliance. The special connecting cable with the structure is more suitable for the cables: the super-flexible special cable connecting system is arranged on indoor and outdoor walls, boards or trays, in channels or embedded in gypsum, in laying environments such as pipelines, bridges, direct burial and the like.

Drawings

Fig. 1 is a schematic view of the radial cross section structure of the present invention.

In the figure: 1. the cable comprises a first conductor, 2, a first insulating layer, 3, a main wire core, 4, a second conductor, 5, a second insulating layer, 6, a control wire core, 7, a filler, 8, a cable core, 9, a non-woven fabric layer, 10 and an outer sheath.

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, an elastomer sheath ultra-flexible special cable is characterized in that the structure is as follows: the main wire core, the control wire core and the filler are twisted to form a cable core; the non-woven fabric layer and the outer sheath are sequentially wrapped outside the cable core, and the outer diameter range of the cable is 18.2-23.1 mm;

the main wire core is formed by a first conductor coated with a first insulating layer, and the nominal diameter of the first conductor ranges from 2.7 mm to 3.3 mm;

a control wire core is formed by a second conductor coated with a second insulating layer, and the nominal diameter range of the second conductor is 1.3-1.6 mm;

the first conductor and the second conductor are type 6 bare copper soft conductors or tinned soft copper conductors which meet the IEC60228 requirements;

by adopting the structure, the electric performance is ensured, and the outer diameter is controlled in a smaller range.

The first insulating layer is formed by extruding and wrapping a 70 ℃ PVC-butyronitrile elastomer composite insulating material (a 70 ℃ butyronitrile PVC elastomer insulating material of Union photovoltaic New Material, Ltd. in the well-done market), and the nominal thickness range of the first insulating layer is 0.8-1.0 mm;

the second insulating layer is formed by extruding and wrapping a low-density polyethylene insulating material (LDPE-1 of special cable material factory in the east Asian Shanghai province), and the nominal thickness range of the second insulating layer is 0.6-0.7 mm;

the outer sheath is formed by extruding 70 ℃ PVC-butyronitrile elastomer composite sheath material (70 ℃ butyronitrile PVC elastomer sheath material (the hardness is 70A) of Union photovoltaic New Material, Inc. in the well-known market), and the nominal thickness range of the outer sheath is 1.8-2.4 mm.

In the actual use process, in order to make the best effect, the technical scheme is further provided on the basis of the previous steps: the nominal diameter range of the conductor monofilament is phi 0.14 mm-phi 0.20 mm; the bare copper or tin-plated copper conductor is a type 6 conductor, and is formed by stranding a plurality of bare copper or tin-plated copper monofilaments, and the stranding pitch diameter ratio is 18-25 times. The cable core is formed by twisting a plurality of wire cores and a filling rope; the stranding pitch diameter ratio of the cable core is 8-12 times; the non-woven fabrics layer comprises the non-woven fabrics of overlapping lapping, and non-woven fabrics nominal thickness 0.1mm, the rate of overlapping is not less than 25% (for thickness and mechanical properties, the rate of overlapping is preferred 28 ~ 30%). The insulating layer 2 and the insulating layer 5 adopt a thin-wall extrusion process structure. The filler 7 is a high-purity PP filler rope. The outer sheath 10 is manufactured by extrusion process. The outer sheath 10 is preferably a 70 ℃ PVC-butyronitrile elastomer composite sheath which has the characteristics of ageing resistance, high flexibility and the like.

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.

The cable test parameters are shown in table 1.

TABLE 1

Claims (6)

1. The utility model provides an ultra-flexible special cable of elastomer sheath, characterized by structure is: the main wire core, the control wire core and the filler are twisted to form a cable core; the cable core (8) is sequentially wrapped with a non-woven fabric layer (9) and an outer sheath (10), and the outer diameter range of the cable is 18.2-23.1 mm;

the main wire core (3) is formed by a first conductor (1) coated with a first insulating layer (2), and the nominal diameter range of the first conductor (1) is 2.7-3.3 mm;

a control wire core (6) is formed by a second conductor (4) coated with a second insulating layer (5), and the nominal diameter range of the second conductor (4) is 1.3-1.6 mm;

the first conductor and the second conductor are type 6 bare copper soft conductors or tinned soft copper conductors which meet the IEC60228 requirements;

the first insulating layer (2) is formed by extruding and wrapping a 70 ℃ PVC-butyronitrile elastomer composite insulating material, and the nominal thickness range of the first insulating layer is 0.8-1.0 mm;

the second insulating layer (5) is formed by extruding and wrapping a low-density polyethylene insulating material at the temperature of 70 ℃, and the nominal thickness range of the second insulating layer is 0.6-0.7 mm;

the outer sheath (10) is formed by extruding and wrapping PVC-butyronitrile elastomer composite sheath materials at the temperature of 70 ℃, and the nominal thickness range of the outer sheath is 1.8-2.4 mm.

2. The elastomer sheath ultra-flexible specialty cable of claim 1, wherein:

the bare copper soft conductor is formed by twisting a plurality of bare copper monofilaments, the twist pitch diameter ratio is 18-25 times, and the nominal diameter range of the bare copper monofilaments is phi 0.14 mm-phi 0.20 mm;

the tinned soft copper conductor is formed by twisting a plurality of tinned copper monofilaments, the twisting pitch-diameter ratio is 18-25 times, and the nominal diameter range of the tinned copper monofilaments is phi 0.14 mm-phi 0.20 mm.

3. The elastomer sheath ultra-flexible specialty cable of claim 1, wherein: the stranding pitch diameter ratio of the cable core (8) is 8-12 times;

the non-woven fabric layer (9) is formed by overlapping and lapping non-woven fabrics, the nominal thickness of the non-woven fabrics is 0.1mm, and the lapping rate is not less than 25%.

4. The elastomer sheath ultra-flexible specialty cable of claim 1, wherein: the filler (7) is a PP filler rope.

5. The elastomer sheathed ultra-flexible specialty cable of claim 3, wherein: the overlapping lapping rate of the non-woven fabric layers is 28-30%.

6. The elastomer sheath ultra-flexible special cable as claimed in claim 1, wherein the main core is provided with a plurality of wires, and the control core is provided with a plurality of wires;

setting the circle center of the radial section of the cable as a point o; the circumference of the plurality of main wire cores takes the point o as the circle center, and the main wire cores are adjacent in sequence; the circle where the control wire cores are located takes the point o as the circle center; each control wire core is adjacent in sequence, a first control wire core is adjacent to a last main wire core, and the first main wire core is adjacent to the last control wire core.