CN217655677U

CN217655677U - Environment-friendly fireproof ultra-flexible power cable

Info

Publication number: CN217655677U
Application number: CN202123334488.6U
Authority: CN
Inventors: 沈小平; 贾卫楠; 郑长亮; 戴伟斌; 杜华雪
Original assignee: Tongding Interconnection Information Co Ltd
Current assignee: Tongding Interconnection Information Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-10-25
Anticipated expiration: 2031-12-28

Abstract

The invention provides an environment-friendly fireproof ultra-flexible power cable which comprises a cable core formed by stranding a plurality of insulating wire cores, wherein a ceramic silicon rubber composite belt is wrapped on the outer side of the cable core, and a TPU thermoplastic elastomer isolating layer, a shielding layer and a TPU thermoplastic elastomer sheath are sequentially wrapped on the outer side of the ceramic silicon rubber composite belt from inside to outside; each insulated wire core is a core part formed by twisting a plurality of folded yarns, a mica tape is wrapped outside the core part, and a TPE thermoplastic elastomer insulating layer is wrapped outside the mica tape; each folded yarn is formed by twisting a plurality of conductor monofilaments. The cable is reasonable in structural design, the ceramic silicon rubber composite belt is wrapped on the outer side of the cable core, EPE pearl cotton is filled in gaps of the cable core, and the TPU thermoplastic elastomer is arranged in a sheath structure of the cable, so that the flexibility and the resilience performance of the cable are guaranteed, and meanwhile, the cable is good in fireproof performance, good in environmental protection performance and good in protection performance on the cable core.

Description

Environment-friendly fireproof ultra-flexible power cable

Technical Field

The invention belongs to the technical field of electric wires and cables, and particularly relates to an environment-friendly fireproof ultra-flexible power cable.

Background

Power cable is the cable that is used for transmission and distribution electric energy, the special environment that power cable used all has very high requirement to the performance of cable and resistant bending property, but the resistant performance of buckling of traditional power cable is not high, bend radius is great, resilience performance is relatively poor, at the in-process of production, the power cable that processing was accomplished need twine on cable drum, when laying like this, power cable can produce the bending, be difficult to straighten, the degree of difficulty of laying has been increased, in case lead to the power cable fracture because of buckling or dragging in laying process, then can directly cause power transmission problem and economic loss. Therefore, there is a need for improvements to existing power cables.

Disclosure of Invention

In view of the above, the present invention provides an environment-friendly fireproof ultra-flexible power cable, which is designed to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an environment-friendly fireproof ultra-flexible power cable comprises a cable core formed by stranding a plurality of insulating wire cores, wherein a ceramic silicon rubber composite belt is wrapped on the outer side of the cable core, and a TPU thermoplastic elastomer isolating layer, a shielding layer and a TPU thermoplastic elastomer sheath are sequentially coated on the outer side of the ceramic silicon rubber composite belt from inside to outside; each insulated wire core is a core part formed by twisting a plurality of folded yarns, a mica tape is wrapped outside the core part, and a TPE thermoplastic elastomer insulating layer is wrapped outside the mica tape; each strand is formed by twisting a plurality of conductor monofilaments.

Furthermore, the shielding layer is formed by weaving a tinned copper wire.

Further, the insulating sinle silk includes central strand and the middle level strand that the peripheral equipartition of central strand set up and the outer strand that the middle level strand periphery was arranged, and each outside strand also uses central strand to set up as the central equipartition.

Further, the conductor monofilament adopts a copper-magnesium alloy wire.

Furthermore, EPE pearl wool filling materials are filled inside the ceramic silicon rubber composite belt.

Further, the strand is formed by twisting conductor monofilaments 1+6 in a regular arrangement.

Compared with the prior art, the invention has the following advantages:

the cable is reasonable in structural design, the ceramic silicon rubber composite belt is wrapped on the outer side of the cable core, EPE pearl cotton is filled in gaps of the cable core, and the TPU thermoplastic elastomer is arranged in a sheath structure of the cable, so that the flexibility and the resilience performance of the cable are guaranteed, and meanwhile, the cable is good in fireproof performance, good in environmental protection performance and good in protection performance on the cable core. In addition, the TPU thermoplastic elastomer sheath is adopted, so that the cable has high oil resistance and good wear resistance.

Drawings

The accompanying drawings, which 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 without limitation. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of an insulated wire core according to the invention;

FIG. 3 is a schematic view of an embodiment of the present invention with a center reinforcement;

fig. 4 is a schematic view of the insulated wire core provided with a wrapping tape layer according to the invention.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the invention can be combined with each other.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are merely for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable 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 creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

The utility model provides an ultra-flexible power cable of environmental protection fire prevention type, as shown in fig. 1 and fig. 2, includes the cable core that is formed by the transposition of several insulation core 1, winds the compound area 2 of ceramic silicon rubber around the cable core outside, has TPU thermoplastic elastomer isolation layer 3, shielding layer 4 and TPU thermoplastic elastomer sheath 5 in proper order to wrap up outside the compound area of ceramic silicon rubber from inside to outside. On the premise of ensuring that the power cable has good flexibility and resilience performance, the ceramic silicon rubber composite tape is wrapped outside the cable core to play a role in fire prevention, the TPU thermoplastic elastomer isolation layer is wrapped in an extrusion mode to play a role in protecting the cable core, and the oil resistance of the cable is effectively improved. The TPU thermoplastic elastomer sheath enables the cable to have high oil resistance and good wear resistance.

Each insulated wire core is a core part 6 formed by twisting 9 a plurality of strands. The insulated wire core formed by stranding a plurality of soft copper-magnesium alloy wires conforms to a 6-type conductor structure, and the copper-magnesium alloy wires are mainly used for improving the bending performance and the torsion performance of the cable.

The mica tape 7 wraps the outer side of the core part, and the TPE thermoplastic elastomer insulating layer 8 wraps the outer side of the mica tape, so that the fireproof and insulating effects are achieved together. Each strand is formed by stranding a plurality of conductor filaments 12. Generally, the shielding layer is formed by weaving a tinned copper wire, so that the effect of shielding an electric field can be effectively achieved, and the signal interference resistance of the cable is improved.

The conductor monofilament adopts copper-magnesium alloy wires, high-strength copper-magnesium alloy wires are stranded into folded yarns by adopting 6-type insulated wire cores, and then the folded yarns are stranded into the insulated wire cores. By way of example, each strand is twisted from 1+6 of a regular array of conductor filaments.

In an optional embodiment, each strand of the insulated wire core comprises a central strand 13, a middle layer strand 14 uniformly distributed on the periphery of the central strand, and an outer layer strand 15 uniformly distributed on the periphery of the middle layer strand, and each outer strand is also uniformly distributed by taking the central strand as the center, so that the bending strength in each direction is consistent, the deformation amount is consistent, and the integrity is good. In a further improved scheme, as shown in fig. 4, the outer side of the middle layer strand can be coated by a wrapping tape layer 16, so that the overall stability is excellent, the cable core has good roundness and is not easy to loose and crack.

When the cable is manufactured, the inorganic synthetic mica tape is wrapped outside the core part, so that the fireproof performance is achieved. Extrude one deck TPE thermoplastic elastomer insulating material afterwards, then strand many insulation core into the cable core, fill the cotton filling layer of EPE pearl between the cable core, the cable core outside is around the compound area of ceramic silicon rubber of package, later extrude TPU thermoplastic elastomer isolation layer in the outside, tinned copper wire shielding layer is woven to the isolation layer outside, TPU thermoplastic elastomer sheath material is extruded to the tinned copper wire shielding layer outside, and then the preparation of accomplishing the cable sheath.

In an optional embodiment, the inner side of the ceramic silicon rubber composite belt is filled with EPE pearl cotton filling material 10, the EPE pearl cotton is light and elastic, and has certain firmness after molding, so that the flexibility of the power cable is ensured, good buffering performance is also considered, the strength of the cable is effectively increased, the bending performance of the cable is improved, and the roundness of the cable core is ensured.

In a special application environment, the tensile property of the cable is higher in the laying and using processes, so that on the basis of good resilience and high flexibility of the power cable provided by the invention and in order to meet the requirement of higher tensile property, in an optional embodiment, as shown in fig. 3, a central reinforcing member 11 is arranged at the central position of the cable core, the insulated wire cores are uniformly distributed by taking the central reinforcing member as the center, and the insulated reinforcing member and the insulated wire cores are filled with EPE pearl cotton. For example, the central reinforcing part adopts a steel wire, so that the high tensile capacity of the cable in the laying and using processes can be effectively ensured, the fracture damage is avoided, the use reliability is high, and the service life is long.

The invention has reasonable structure design, the ceramic silicon rubber composite belt is wrapped outside the cable core, and EPE pearl cotton is filled in the gap of the cable core, which completely passes the BS6387 CWZ-level fire-proof test. The ceramic silicon rubber material keeps the characteristics of silicon rubber at normal temperature, ensures that the cable has better flexibility, improves the extrusion resistance and mechanical impact resistance of the cable, and has excellent protective performance because the filling material is converted into an inorganic ceramic material at high temperature. Performing 10 ten thousand reciprocating bidirectional bending, namely 200000 unidirectional bending; the twisting speed is 360 DEG/s, the anticlockwise and clockwise alternate twisting is 360 DEG, and the two-way twisting is 600 ten thousand times, namely 1200 ten thousand one-way twisting. Meanwhile, the power cable can be made into different core numbers according to the requirement, and the protective layer of the cable can be designed according to the requirement of the laying environment, so that the cable can adapt to the use of users in different environments. The low-smoke halogen-free thermoplastic elastomer material has less smoke generation amount during combustion, does not release halogen acid gas, effectively prevents the generation of secondary disasters during fire and the harm of toxic substances in the cable material to human bodies, and has good environmental protection property.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. The utility model provides an ultra-flexible power cable of environmental protection fire prevention type which characterized in that: the cable comprises a cable core formed by stranding a plurality of insulating wire cores, a ceramic silicon rubber composite belt is wrapped on the outer side of the cable core, and a TPU thermoplastic elastomer isolating layer, a shielding layer and a TPU thermoplastic elastomer sheath are sequentially coated on the outer side of the ceramic silicon rubber composite belt from inside to outside; each insulated wire core is a core part formed by twisting a plurality of folded yarns, a mica tape is wrapped outside the core part, and a TPE thermoplastic elastomer insulating layer is wrapped outside the mica tape; each folded yarn is formed by twisting a plurality of conductor monofilaments.

2. The environment-friendly fire-proof ultra-flexible power cable according to claim 1, characterized in that: the shielding layer is formed by weaving tinned copper wires.

3. The environment-friendly fireproof ultra-flexible power cable according to claim 1, wherein: the insulating core comprises a central strand, a middle layer of strand uniformly distributed on the periphery of the central strand and an outer layer of strand uniformly distributed on the periphery of the middle layer of strand, and the outside strands are uniformly distributed by taking the central strand as the center.

4. The environment-friendly fire-proof ultra-flexible power cable according to claim 1 or 3, characterized in that: the conductor monofilament adopts a copper-magnesium alloy wire.

5. The environment-friendly fireproof ultra-flexible power cable according to claim 1, wherein: the inner side of the ceramic silicon rubber composite belt is filled with EPE pearl cotton filler.

6. The environment-friendly fireproof ultra-flexible power cable according to claim 1, wherein: the strand is formed by twisting 1+6 regularly arranged conductor monofilaments.