CN219066482U

CN219066482U - Wear-resistant flame-retardant PE sheath for cable

Info

Publication number: CN219066482U
Application number: CN202223329611.XU
Authority: CN
Inventors: 曹华; 朱琴; 杨震
Original assignee: Jiangsu Dongfang Cable Material Co ltd
Current assignee: Jiangsu Dongfang Cable Material Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-05-23
Anticipated expiration: 2032-12-13

Abstract

The utility model belongs to the technical field of cable PE sheaths, and particularly relates to a wear-resistant flame-retardant cable PE sheath which comprises a cable, wherein a polyethylene inner sheath is arranged outside the cable, a first anti-interference layer is fixed outside the polyethylene inner sheath, a first flame-retardant layer is fixed outside the first anti-interference layer, and a second anti-interference layer is fixed outside the first flame-retardant layer. According to the cable, the polyethylene inner protective layer, the first anti-interference layer, the first flame-retardant layer, the second anti-interference layer, the second flame-retardant layer, the polyethylene outer protective layer and the polyamide wear-resistant layer are arranged, in the process of using the cable, under the action of the first flame-retardant layer and the second flame-retardant layer, the cable can have fireproof and flame-retardant performances, when the cable encounters open flame, the phenomenon of spontaneous combustion does not occur, and under the action of the first anti-interference layer and the second anti-interference layer, the cable can be blocked from being influenced by external anti-interference factors, so that normal transmission of cable signals is ensured.

Description

Wear-resistant flame-retardant PE sheath for cable

Technical Field

The utility model relates to the technical field of PE sheaths of cables, in particular to a wear-resistant flame-retardant PE sheath of a cable.

Background

The cable is usually a cable composed of several or several groups of wires (at least two wires in each group), each group of wires are mutually insulated and are often twisted around a center, the whole outside is covered with a highly insulating sheath, so that the cable has the characteristics of inner power on and outer insulation, the insulating sheath used outside the cable is generally made of PE materials, but the sheath made of PE materials at present has no fireproof and flame-retardant performance in the use process, so that the cable can automatically ignite along with the phenomenon when encountering open fire, thereby influencing the use of the cable, and the anti-interference performance of the PE sheath is poor, so that the cable is easily interfered in the use process, thereby influencing the transmission of cable signals, and therefore, the PE sheath of the wear-resistant flame-retardant cable is proposed to solve the problems.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a wear-resistant flame-retardant PE sheath for a cable, which solves the problems in the background art.

(II) technical scheme

The utility model adopts the following technical scheme for realizing the purposes:

the utility model provides a wear-resisting fire-retardant cable PE sheath, includes the cable, the outside of cable is provided with the polyethylene inner sheath, the outside of polyethylene inner sheath is fixed with first anti-interference layer, the outside of first anti-interference layer is fixed with first fire-retardant layer, the outside of first fire-retardant layer is fixed with the second anti-interference layer, the outside of second anti-interference layer is fixed with the fire-retardant layer of second, the outside of second fire-retardant layer is fixed with the polyethylene outer sheath, the outside of polyethylene outer sheath is fixed with polyamide wearing layer.

Further, polytetrafluoroethylene brackets are fixed in the polyethylene inner protective layer, and the cables are respectively positioned in cavities formed between the polyethylene inner protective layer and the polytetrafluoroethylene brackets.

Further, the outer part of the polyamide wear-resistant layer is fixed with wear-resistant rubber strips at equal intervals, and the wear-resistant rubber strips are made of polybutadiene.

Further, the first anti-interference layer is a copper tape layer, and the second anti-interference layer is a tinned copper wire weaving layer.

Further, the first flame-retardant layer is a silicon rubber glass fiber layer, and the second flame-retardant layer is a phenolic fiber layer.

(III) beneficial effects

Compared with the prior art, the utility model provides the wear-resistant flame-retardant cable PE sheath, which has the following beneficial effects:

according to the cable, the polyethylene inner protective layer, the first anti-interference layer, the first flame-retardant layer, the second anti-interference layer, the second flame-retardant layer, the polyethylene outer protective layer and the polyamide wear-resistant layer are arranged, so that the sheath can have fireproof and flame-retardant performances under the action of the first flame-retardant layer and the second flame-retardant layer in the use process of the sheath, when the cable is burnt by open fire, the phenomenon of spontaneous combustion can not occur, and under the action of the first anti-interference layer and the second anti-interference layer, the influence of external anti-interference factors on the cable can be prevented, so that the normal transmission of cable signals is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a cross-sectional view of the overall structure of the present utility model.

In the figure: 1. a cable; 2. a polyethylene inner sheath; 3. a first anti-interference layer; 4. a first flame retardant layer; 5. a second anti-interference layer; 6. a second flame retardant layer; 7. a polyethylene outer sheath; 8. a polyamide wear layer; 9. a polytetrafluoroethylene support; 10. wear-resistant rubber strips.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1 and fig. 2, the wear-resistant flame-retardant cable PE sheath according to one embodiment of the present utility model includes a cable 1, a polyethylene inner sheath 2 is disposed on the outer portion of the cable 1, a first anti-interference layer 3 is fixed on the outer portion of the polyethylene inner sheath 2, a first flame-retardant layer 4 is fixed on the outer portion of the first anti-interference layer 3, a second anti-interference layer 5 is fixed on the outer portion of the first flame-retardant layer 4, a second flame-retardant layer 6 is fixed on the outer portion of the second anti-interference layer 5, a polyethylene outer sheath 7 is fixed on the outer portion of the second flame-retardant layer 6, and a polyamide wear-resistant layer 8 is fixed on the outer portion of the polyethylene outer sheath 7.

As shown in fig. 1 and 2, in some embodiments, the polytetrafluoroethylene support 9 is fixed inside the polyethylene inner sheath 2, the cables 1 are respectively located inside the cavities formed between the polyethylene inner sheath 2 and the polytetrafluoroethylene support 9, and the laid cables 1 can be separated by using the polytetrafluoroethylene support 9, so that the cables 1 are conveniently placed.

As shown in fig. 1 and 2, in some embodiments, the outer part of the polyamide wear-resistant layer 8 is equidistantly fixed with a wear-resistant rubber strip 10, and the wear-resistant rubber strip 10 is made of polybutadiene, so that the surface of the sheath can be further protected and the wear-resistant performance of the surface of the sheath can be enhanced due to the high tensile strength and the strong wear resistance of the polybutadiene.

As shown in fig. 2, in some embodiments, the first anti-interference layer 3 is a copper tape layer, and the second anti-interference layer 5 is a tinned copper wire braid, and both the copper tape and the tinned copper wire braid have the effect of strong shielding electric fields, so that the anti-interference performance of the sheath can be enhanced, and the normal transmission work of cable signals is ensured.

As shown in fig. 2, in some embodiments, the first flame retardant layer 4 is a silicone rubber glass fiber layer, the second flame retardant layer 6 is a phenolic fiber layer, and because the silicone rubber glass fiber is made of a high temperature resistant high strength glass fiber cloth as a base material, and is compounded by silicone rubber through a special process, the flame retardant composite material is a high-performance and multipurpose composite material, and has excellent high temperature resistance, low temperature resistance, good chemical corrosion resistance, heat aging resistance, weather aging resistance and high insulation performance, and meanwhile, the phenolic fiber is a crosslinked fiber made of novolac resin or thermosetting phenolic resin, and is an acetalized or complexed flame retardant organic fiber, so that the sheath has fireproof and flame retardant performances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a wear-resisting fire-retardant cable PE sheath, includes cable (1), its characterized in that: the cable is characterized in that a polyethylene inner sheath (2) is arranged outside the cable (1), a first anti-interference layer (3) is fixed on the outer portion of the polyethylene inner sheath (2), a first flame-retardant layer (4) is fixed on the outer portion of the first anti-interference layer (3), a second anti-interference layer (5) is fixed on the outer portion of the first flame-retardant layer (4), a second flame-retardant layer (6) is fixed on the outer portion of the second anti-interference layer (5), a polyethylene outer sheath (7) is fixed on the outer portion of the second flame-retardant layer (6), and a polyamide wear-resistant layer (8) is fixed on the outer portion of the polyethylene outer sheath (7).

2. The wear resistant flame retardant cable PE jacket of claim 1 wherein: and a polytetrafluoroethylene bracket (9) is fixed in the polyethylene inner protective layer (2), and the cables (1) are respectively positioned in a cavity formed between the polyethylene inner protective layer (2) and the polytetrafluoroethylene bracket (9).

3. The wear resistant flame retardant cable PE jacket of claim 1 wherein: the wear-resistant rubber strips (10) are fixed outside the polyamide wear-resistant layer (8) at equal intervals, and the wear-resistant rubber strips (10) are made of polybutadiene.

4. The wear resistant flame retardant cable PE jacket of claim 1 wherein: the first anti-interference layer (3) is a copper strip layer, and the second anti-interference layer (5) is a tinned copper wire weaving layer.

5. The wear resistant flame retardant cable PE jacket of claim 1 wherein: the first flame-retardant layer (4) is a silicon rubber glass fiber layer, and the second flame-retardant layer (6) is a phenolic fiber layer.