CN213635495U - Polyvinyl chloride insulation flame-retardant polyvinyl chloride sheath power cable - Google Patents

Abstract

The utility model provides a polyvinyl chloride insulating flame-retardant polyvinyl chloride sheath power cable, which comprises a reinforcing rib, a heat dissipation component, an insulating wire core, an inner liner layer coated outside the heat dissipation component and the insulating wire core, and an armor layer and a sheath layer arranged outside the inner liner layer, the reinforcing rib is arranged in the central cavity of the heat dissipation assembly, a plurality of heat dissipation fins are uniformly and fixedly arranged outside the heat dissipation assembly along the circumferential direction of the reinforcing rib, a wire core fixing cavity is formed between every two heat dissipation fins, the insulated wire core is arranged in the wire core fixing cavity, and is tangent with the inner liner layer, the inner liner layer comprises a PVC wrapping layer and a plurality of flame-retardant structures which are uniformly arranged outside the PVC wrapping layer, the flame-retardant structure comprises a heat-dissipation metal frame and a buffer ball, a powder cavity filled with a flame retardant is formed between the bottom of the heat-dissipation metal frame and the PVC wrapping layer, an arc-shaped groove for placing the buffer ball is embedded in the top of the powder cavity, and the buffer ball is tangent to the armor layer.

Description

Polyvinyl chloride insulation flame-retardant polyvinyl chloride sheath power cable

Technical Field

The utility model relates to a wire and cable technical field indicates a fire-retardant polyvinyl chloride sheath power cable of polyvinyl chloride insulation especially.

Background

With the development of the power and network society and the progress of the technology, power cables are commonly used today to transmit various data and process the distribution of electric energy, such as power stations, power grids, power supply stations and projects across the sea and river, so as to transmit power and high-voltage electric energy, and have stable transmission performance.

The existing cable is poor in flame retardant effect, poor in heat dissipation performance inside the cable and capable of affecting the service life of the cable. Therefore, the utility model provides an insulating fire-retardant polyvinyl chloride sheath power cable of polyvinyl chloride 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 fire-retardant polyvinyl chloride sheath power cable of polyvinyl chloride.

In order to solve the technical problem, the utility model provides a following technical scheme: a polyvinyl chloride insulating flame-retardant polyvinyl chloride sheathed power cable comprises a reinforcing rib, a heat dissipation assembly, an insulating wire core, an inner liner layer coated outside the heat dissipation assembly and the insulating wire core, an armor layer and a sheath layer which are arranged outside the inner liner layer, the reinforcing rib is arranged in the central cavity of the heat dissipation assembly, a plurality of heat dissipation fins are uniformly and fixedly arranged outside the heat dissipation assembly along the circumferential direction of the reinforcing rib, a wire core fixing cavity is formed between every two heat dissipation fins, the insulated wire core is arranged in the wire core fixing cavity, and is tangent with the inner liner layer, the inner liner layer comprises a PVC wrapping layer and a plurality of flame-retardant structures which are uniformly arranged outside the PVC wrapping layer, the flame-retardant structure comprises a heat-dissipation metal frame and a buffer ball, a powder cavity filled with a flame retardant is formed between the bottom of the heat-dissipation metal frame and the PVC wrapping layer, an arc-shaped groove for placing the buffer ball is embedded in the top of the powder cavity, and the buffer ball is tangent to the armor layer.

As an optimized technical solution of the present invention, the insulated wire core includes a central conductor and an insulated layer coated outside the conductor.

As an optimal technical scheme of the utility model, radiator unit, insulation core and PVC have polypropylene to tear netted packing rope around packing in the space between the covering.

As an optimized technical scheme of the utility model, the conductor is the copper conductor.

As an optimized technical scheme of the utility model, the insulating layer is the polyvinyl chloride insulating layer.

As an optimized technical proposal of the utility model, the armor layer is a galvanized steel strip armor layer.

As an optimized technical scheme of the utility model, the restrictive coating is fire-retardant polyvinyl chloride restrictive coating.

The utility model discloses the beneficial effect who reaches is:

1. the utility model provides a polyvinyl chloride insulating flame-retardant polyvinyl chloride sheath power cable, through the heat dissipation assembly and the heat dissipation metal frame, the heat transfer in the cable core can be accelerated, and the heat dissipation rate of the power cable is improved, thereby ensuring the working efficiency of the power cable;

2. the utility model discloses a fire-retardant polyvinyl chloride restrictive coating and fire-retardant structure that set up, when the cable is on fire for some reason, the fire retardant of packing in the fire-retardant structure can put out flame, realized remedying in time after the cable is on fire, improve the fire behaviour of cable;

3. the utility model discloses a buffer ball that sets up can improve the compressive property of cable to the life of cable has been prolonged.

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 inner liner structure of the present invention;

FIG. 3 is a schematic structural view of the heat dissipation assembly of the present invention;

FIG. 4 is a schematic view of the structure of the flame retardant structure of the present invention;

reference numbers in the figures: 1. reinforcing ribs; 2. a heat dissipating component; 3. an insulated wire core; 4. an inner liner layer; 5. an armor layer; 6. a sheath layer; 7. a central cavity; 8. heat dissipation fins; 9. a wire core fixing cavity; 10. PVC wrapping; 11. a heat-dissipating metal frame; 12. a buffer ball; 13. a flame retardant; 14. a powder chamber; 15. an arc-shaped slot; 16. a conductor; 17. an insulating layer; 18. the polypropylene tears the mesh filling rope.

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 FIGS. 1-4, the utility model provides a PVC insulating flame retardant PVC sheathed power cable, which comprises a reinforcing rib 1, a heat dissipation assembly 2, an insulated wire core 3, an inner liner layer 4 coated outside the heat dissipation assembly 2 and the insulated wire core 3, and an armor layer 5 and a sheath layer 6 arranged outside the inner liner layer 4, wherein the reinforcing rib 1 is arranged in a central cavity 7 of the heat dissipation assembly 2, a plurality of heat dissipation fins 8 are uniformly and fixedly arranged outside the heat dissipation assembly 2 along the circumferential direction of the reinforcing rib 1, a wire core fixing cavity 9 is formed between every two heat dissipation fins 8, the insulated wire core 3 is arranged in the wire core fixing cavity 9 and is tangent to the inner liner layer 4, the inner liner layer 4 comprises a PVC wrapping layer 10 and a plurality of flame retardant structures uniformly arranged outside the PVC wrapping layer 10, the flame retardant structures comprise a heat dissipation metal frame 11 and a buffer ball 12, a powder cavity 14 filled with a flame retardant 13 is formed between the bottom of the heat dissipation, the top of the buffer ball is embedded with an arc-shaped groove 15 for placing the buffer ball 12, and the buffer ball 12 is tangent with the armor layer 5.

Further, the insulated wire core 3 comprises a conductor 16 at the center and an insulating layer 17 coated outside the conductor 16.

Further, gaps among the heat dissipation assembly 2, the insulating wire core 3 and the PVC wrapping layer 10 are filled with polypropylene tearing netted filling ropes 18.

Further, the conductor 16 is a copper conductor.

Further, the insulating layer 17 is a polyvinyl chloride insulating layer.

Further, the armor layer 5 is a galvanized steel strip armor layer.

Further, the sheath layer 6 is a flame-retardant polyvinyl chloride sheath layer.

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 (7)

1. A polyvinyl chloride insulating flame-retardant polyvinyl chloride sheath power cable is characterized by comprising a reinforcing rib (1), a heat dissipation assembly (2), an insulating wire core (3), an inner liner (4) covering the heat dissipation assembly (2) and the insulating wire core (3), and an armor layer (5) and a sheath layer (6) arranged outside the inner liner (4), wherein the reinforcing rib (1) is arranged in a central cavity (7) of the heat dissipation assembly (2), the heat dissipation assembly (2) is uniformly and fixedly provided with a plurality of heat dissipation fins (8) along the circumferential direction of the reinforcing rib (1), a wire core fixing cavity (9) is formed between every two heat dissipation fins (8), the insulating wire core (3) is arranged in the wire core fixing cavity (9) and is tangent to the inner liner (4), the inner liner (4) comprises a PVC winding layer (10) and a plurality of flame-retardant structures uniformly arranged outside the PVC winding layer (10), the flame retardant structure comprises a heat dissipation metal frame (11) and buffer balls (12), wherein a powder cavity (14) filled with a flame retardant (13) is formed between the bottom of the heat dissipation metal frame (11) and the PVC wrapping layer (10), an arc-shaped groove (15) for placing the buffer balls (12) is embedded in the top of the powder cavity, and the buffer balls (12) are tangent to the armor layer (5).

2. A pvc insulated flame retardant pvc sheathed power cable according to claim 1, characterized in that the insulated wire core (3) comprises a central conductor (16) and an insulating layer (17) covering the conductor (16).

3. The PVC insulated flame-retardant PVC sheathed power cable according to claim 1, wherein gaps among the heat dissipation assembly (2), the insulated wire core (3) and the PVC wrapping layer (10) are filled with polypropylene tearing netted filling ropes (18).

4. A pvc insulated flame retardant pvc sheathed power cable according to claim 2, characterized in that the conductor (16) is a copper conductor.

5. The polyvinyl chloride insulated flame-retardant polyvinyl chloride jacketed power cable according to claim 2, characterized in that the insulating layer (17) is a polyvinyl chloride insulating layer.

6. A pvc insulated flame retardant pvc sheathed power cable according to claim 1, characterized in that the armouring layer (5) is a galvanized steel tape armouring layer.

7. The polyvinyl chloride insulated flame-retardant polyvinyl chloride jacketed power cable according to claim 1, characterized in that the jacket layer (6) is a flame-retardant polyvinyl chloride jacket layer.

Images