CN210039738U

CN210039738U - Armored oxygen-barrier insulating flame-retardant polyethylene plastic cable structure

Info

Publication number: CN210039738U
Application number: CN201920882434.7U
Authority: CN
Inventors: 宋新刚
Original assignee: Xi'an Qinjun Hualian Polymer Material Co Ltd
Current assignee: Xi'an Qinjun Hualian Polymer Material Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-02-07
Anticipated expiration: 2029-06-13

Abstract

The utility model provides an insulating and flame-retardant polyethylene plastic cable structure with an armored oxygen-isolating layer, which comprises a flame-retardant layer, an insulating layer and steel strip armoring; the flame-retardant layer is internally provided with three conductive wire cores in a triangular arrangement mode, and the flame-retardant layer is connected with the conductive wire cores in a sleeving mode; the insulating layer is respectively coated outside the conductive wire core and the grounding wire core; the filling layer is filled in the flame-retardant layer; the steel wires are wrapped at four positions inside the filling layer in a rectangular arrangement mode; the oxygen isolation layer is coated outside the flame-retardant layer, and a steel tape armor is coated outside the oxygen isolation layer; the outer sheath is coated outside the steel tape armor. Through structurally improving, it is good to have insulating fire behaviour, and the antioxidant power is strong to and tensile, resistance to compression, abrasion strength are showing, improve advantages such as product quality greatly, thereby effectual solution the utility model discloses the problem that proposes in current device is with not enough.

Description

Armored oxygen-barrier insulating flame-retardant polyethylene plastic cable structure

Technical Field

The utility model relates to the technical field of cables, more specifically the utility model relates to an insulating fire-retardant type polyethylene plastic cable structure of armor oxygen barrier that says so especially.

Background

The armored cable is generally a fixed power cable, generally speaking, the armored cable is fixed in a place and basically does not move, the power line transmits electric energy, and the purpose of the armored cable and the armored layer is to increase the mechanical strength of the cable, improve the anti-corrosion capability, enhance the tensile strength, the compressive strength and other mechanical protection and prolong the service life. However, the existing common armored cable has the defects that the design of an internal insulating flame-retardant structure is not complete, so that the insulating flame-retardant performance is poor, the oxidation resistance is slightly insufficient, the mechanical strength of the armored cable, such as tensile strength, compression strength and the like, cannot be improved by a single armored structure, the fixing performance of the armored structure is poor, the product quality is influenced and the like.

In view of the above, research and improvement are made to solve the existing problems, and an insulating flame-retardant polyethylene plastic cable structure with an armored oxygen barrier layer is provided, which aims to achieve the purposes of solving the problems and improving the practical value through the technology.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulating fire-retardant type polyethylene plastic cable structure of oxygen layer is separated to armor to the present common armored cable who proposes in solving above-mentioned background still has the design of the fire-retardant structure of internal insulation incomplete, leads to insulating flame retardant property relatively poor, and simultaneously the antioxidant capacity also shows a bit more inadequately, and single armored structure can't improve mechanical strength such as its tensile, resistance to compression, and armored structure's fixity can be relatively poor, influences product quality scheduling problem and not enough.

In order to achieve the above object, the utility model provides an insulating fire-retardant type polyethylene plastic cable structure of armor oxygen barrier is reached by following specific technological means: the flame-retardant layer is internally provided with three conductive wire cores in a triangular arrangement mode, and the flame-retardant layer is connected with the conductive wire cores in a sleeving mode; the grounding wire core is arranged at the lower position inside the flame-retardant layer and connected with the flame-retardant layer in a sleeving manner; the insulating layer is respectively coated outside the conductive wire core and the grounding wire core; the filling layer is filled in the flame-retardant layer; the steel wires are wrapped at four positions inside the filling layer in a rectangular arrangement mode; the oxygen isolation layer is coated outside the flame-retardant layer, and a steel tape armor is coated outside the oxygen isolation layer; the outer sheath is coated outside the steel tape armor.

As further optimization of the technical scheme, the flame-retardant layer is in a circular tube shape which is made of glass ribbons coated with non-polar flame-retardant coatings on two sides, and a filling layer made of glass fiber ropes is filled in the flame-retardant layer.

As the further optimization of the technical scheme, the conductive wire core and the grounding wire core are both made of copper conductor materials, and the conductive wire core and the grounding wire core are coated with the round tubular insulating layer made of polyethylene materials.

As a further optimization of the technical scheme, the steel wire is a thin steel wire with the diameter of 3 mm.

As a further optimization of the technical scheme, the oxygen-isolating layer is in a circular tube shape made of polyethylene materials.

As the further optimization of the technical scheme, the steel strip armor is in a circular tube shape made of steel sheets, and embossing patterns are arranged on the inner wall and the outer wall of the steel strip armor.

As a further optimization of the technical scheme, the outer sheath is in a circular tube shape made of polyethylene materials, and N PP ropes are arranged and wrapped inside the outer sheath in an annular array mode.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the utility model discloses a set up fire-retardant layer and cooperate inside filling layer, can play fine flame retardant action to inside conductive core and earth connection core.

2. The utility model discloses a cladding insulating layer and the outer oxygen layer that separates of cooperation can play better insulating and prevent the effect of oxidation to conductive core and earth connection core on conductive core and earth connection core.

3. The utility model discloses a set up the steel wire in the filling layer, can make the device utilize the steel wire to improve mechanical strength such as its tensile, resistance to compression greatly on the basis of steel band armor.

4. The utility model discloses a set up the decorative pattern on the inside and outside wall with the steel band armor, can make the steel band armor more firm with the cladding that separates between oxygen layer and the oversheath, improve the device's product quality greatly.

5. The utility model discloses a wrap up in the outer sheath and have the PP rope, can effectively improve the tensile strength and the wear resistance of oversheath.

6. The utility model discloses a to above-mentioned device structural improvement, it is good to have insulating flame retardant property, and the antioxidant ability is strong to and tensile, resistance to compression, abrasion strength are showing, improve advantages such as product quality greatly, thereby effectual solution the utility model discloses the problem that proposes in background art one with not enough.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

fig. 3 is a schematic diagram of the steel-tape armoring structure of the present invention.

In the figure: the cable comprises a flame-retardant layer 1, a conductive wire core 2, a ground wire core 3, an insulating layer 4, a filling layer 5, a steel wire 6, an oxygen isolation layer 7, a steel belt armor 8 and an outer sheath 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 3, the utility model provides a specific technical implementation scheme of an insulating fire-retardant polyethylene plastic cable structure of armor oxygen barrier: the cable comprises a flame-retardant layer 1, a conductive wire core 2, a grounding wire core 3, an insulating layer 4, a filling layer 5, a steel wire 6, an oxygen isolation layer 7, a steel strip armor 8 and an outer sheath 9; the flame-retardant layer 1 is internally provided with three conductive wire cores 2 in a triangular arrangement mode, and the flame-retardant layer 1 is connected with the conductive wire cores 2 in a sleeving mode; the grounding wire core 3 is arranged at the lower position inside the flame-retardant layer 1, and the grounding wire core 3 is connected with the flame-retardant layer 1 in a sleeving manner; the insulating layer 4 is respectively coated outside the conductive wire core 2 and the grounding wire core 3; the filling layer 5 is filled in the flame-retardant layer 1; the steel wires 6 are wrapped at four positions inside the filling layer 5 in a rectangular arrangement mode; the oxygen-isolating layer 7 is coated outside the flame-retardant layer 1, and a steel-tape armor 8 is coated outside the oxygen-isolating layer 7; the outer sheath 9 is coated outside the steel tape armor 8.

The flame-retardant layer 1 is in a circular tube shape which is made of glass ribbon coated with non-polar flame-retardant coating on two sides, and a filling layer 5 made of glass fiber ropes is filled in the flame-retardant layer 1.

The conductive wire core 2 and the grounding wire core 3 are both made of copper conductor materials, and the conductive wire core 2 and the grounding wire core 3 are both coated with a circular tubular insulating layer 4 made of polyethylene materials.

The steel wire 6 is a thin steel wire with a diameter of 3 mm.

The oxygen-isolating layer 7 is a round pipe made of polyethylene material.

The steel strip armor 8 is in a round tube shape made of steel sheets, and embossing patterns are arranged on the inner wall and the outer wall of the steel strip armor 8.

The outer sheath 9 is a circular tube made of polyethylene material, and N PP ropes are arranged and wrapped in the outer sheath 9 in an annular array mode.

The method comprises the following specific implementation steps: when the device is used, firstly, the conductive wire core 2 and the grounding wire core 3 are connected between the wiring terminal and the power transmission equipment for fixing and laying, the insulating layer 4 and the oxygen isolation layer 7 play a role in insulating and preventing oxidation to the wire core during working, the flame-retardant layer 1 and the inner filling layer 6 play a role in flame retardance, the steel wire 6 is utilized to be matched with the steel belt armor 8 to play a role in stronger tensile and compressive mechanical properties, and finally, the outer sheath is utilized to play a role in wear-resistant protection, so that the device has stronger practical value in cable application.

In summary, the following steps: according to the armored oxygen-barrier layer insulation flame-retardant polyethylene plastic cable structure, the flame-retardant layer and the filling layer matched with the inner part are arranged, so that a good flame-retardant effect can be achieved on the conductive wire core and the grounding wire core in the cable structure; the insulating layer is coated on the conductive wire core and the grounding wire core, and the oxygen isolating layer is matched with the outer layer, so that the conductive wire core and the grounding wire core can be well insulated and prevented from being oxidized; by arranging the steel wire in the filling layer, the device can greatly improve the mechanical strength of the steel wire, such as tensile strength, compression strength and the like, on the basis of steel tape armoring; the inner wall and the outer wall of the steel-tape armor are provided with the knurling, so that the steel-tape armor, the oxygen-isolating layer and the outer sheath can be wrapped more firmly, and the product quality of the device is greatly improved; the PP rope is wrapped in the outer sheath, so that the tensile strength and the wear resistance of the outer sheath can be effectively improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An armored oxygen-barrier insulating flame-retardant polyethylene plastic cable structure comprises a flame-retardant layer (1), a conductive wire core (2), a ground wire core (3), an insulating layer (4), a filling layer (5), a steel wire (6), an oxygen-barrier layer (7), a steel-tape armor (8) and an outer sheath (9); the method is characterized in that: the flame-retardant layer (1) is internally provided with three conductive wire cores (2) in a triangular arrangement mode, and the flame-retardant layer (1) is connected with the conductive wire cores (2) in a sleeving mode; the grounding wire core (3) is arranged at the lower position inside the flame-retardant layer (1), and the grounding wire core (3) is connected with the flame-retardant layer (1) in a sleeving manner; the insulating layer (4) is respectively coated outside the conductive wire core (2) and the grounding wire core (3); the filling layer (5) is filled in the flame-retardant layer (1); the steel wires (6) are arranged in a rectangular mode, and four positions are wrapped inside the filling layer (5); the oxygen insulation layer (7) is coated outside the flame retardant layer (1), and a steel tape armor (8) is coated outside the oxygen insulation layer (7); the outer sheath (9) is coated outside the steel tape armor (8).

2. The armored oxygen barrier insulating flame-retardant polyethylene plastic cable structure according to claim 1, wherein: the flame-retardant layer (1) is in a circular tube shape which is made of glass ribbon coated with non-polar flame-retardant coating on two sides, and a filling layer (5) made of glass fiber ropes is filled in the flame-retardant layer (1).

3. The armored oxygen barrier insulating flame-retardant polyethylene plastic cable structure according to claim 1, wherein: the conductive wire core (2) and the grounding wire core (3) are both made of copper conductor materials, and the conductive wire core (2) and the grounding wire core (3) are coated with a round tubular insulating layer (4) made of polyethylene materials.

4. The armored oxygen barrier insulating flame-retardant polyethylene plastic cable structure according to claim 1, wherein: the steel wire (6) is a thin steel wire with the diameter of 3 mm.

5. The armored oxygen barrier insulating flame-retardant polyethylene plastic cable structure according to claim 1, wherein: the oxygen isolation layer (7) is in a circular tube shape made of polyethylene materials.

6. The armored oxygen barrier insulating flame-retardant polyethylene plastic cable structure according to claim 1, wherein: the steel strip armor (8) is in a round tube shape made of steel sheets, and embossing patterns are arranged on the inner wall and the outer wall of the steel strip armor (8).

7. The armored oxygen barrier insulating flame-retardant polyethylene plastic cable structure according to claim 1, wherein: the outer sheath (9) is in a circular tube shape made of polyethylene materials, and N PP ropes are arranged and wrapped inside the outer sheath (9) in an annular array mode.