CN210925567U

CN210925567U - Flame-retardant fireproof low-voltage power cable

Info

Publication number: CN210925567U
Application number: CN202020109718.5U
Authority: CN
Inventors: 武晓菊
Original assignee: Wuhong Cable Group Co ltd
Current assignee: Wuhong Cable Group Co ltd
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2020-07-03
Anticipated expiration: 2030-01-18

Abstract

The utility model belongs to the technical field of the power cable technique and specifically relates to a fire-retardant fire prevention low pressure power cable, including strengthening the core, the surface cladding of strengthening the core has the fine filler of inorganic glass, the fine filler of inorganic glass is located the fixed surface of strengthening the core and is equipped with the copper conductor, the surface cladding of copper conductor has the crosslinked polyethylene insulating layer, the surface cladding of the fine filler of inorganic glass has the insulating layer, the surface cladding of insulating layer has the resist compression layer, and the advantage of this fire-retardant fire prevention low pressure power cable contrast existing cable lies in that the fire prevention is stronger with fire behavior, effectually protects the copper conductor, meets again and can not make cable run burnt out after the conflagration, and cable run can continue normal power supply after the conflagration, is convenient for continue to use before changing the cable, strengthens the life and the emergency performance of.

Description

Flame-retardant fireproof low-voltage power cable

Technical Field

The utility model relates to a power cable technical field especially relates to a fire-retardant fire prevention low pressure power cable.

Background

With the development of society, people are increasingly conscious of safety and environmental protection, and the requirements on the safety and reliability of electric equipment and equipment are higher and higher. A three-phase four-wire system for low pressure distribution lines becomes three-phase five-wire system, increases the ground connection that the protection earth connection is used for equipment on original basis, reduces when guaranteeing that power consumption equipment takes place the electric leakage and receives harm to the person and equipment. The existing cable has fire-resistant characteristics but does not have fire-resistant characteristics, and can keep the power on for a period of time when the cable line is in a fire disaster, but the cable line is burnt out, and the cable line cannot continue to normally supply power after the fire disaster.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having current cable among the prior art and have fire resistive characteristic and do not possess the fire resistive characteristic, can keep a period's circular telegram when cable run conflagration emergence, but cable run has been burnt out, and cable run can't continue the shortcoming of normal power supply after the conflagration, and the fire-retardant fire prevention low voltage power cable who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the design one kind is fire-retardant fire prevention low voltage power cable, including strengthening the core, the surface cladding of strengthening the core has the fine filler of inorganic glass, the surface mounting that the fine filler of inorganic glass is located the strengthening core is equipped with the copper conductor, the surface cladding of copper conductor has the crosslinked polyethylene insulating layer, the surface cladding of the fine filler of inorganic glass has the insulating layer, the surface cladding of insulating layer has the crushing layer, the surface parcel fire-retardant layer of crushing layer polyolefin, the surface cladding of the fire-retardant layer of polyolefin has fire-retardant granule, the surface cladding of fire-retardant granule has the flame retardant coating, the surface cladding of flame retardant coating has the oversheath layer, a plurality of isolation tanks have been seted up on the fire-retardant layer of polyolefin, the through-hole has all been seted up between isolation.

Preferably, the heat insulation layer is a refractory ceramic fiber heat insulation layer, and refractory ceramic fibers are filled in the isolation groove and the through hole.

Preferably, the outer sheath layer is made of a flame-retardant low-smoke halogen-free polyolefin sheath material with an extruded oxygen index of ~, and the inner side surface of the outer sheath is tightly bonded with the outer side surface of the waterproof layer.

Preferably, the anti-pressure layer is a rubber anti-pressure layer, and the fire-proof layer is made of a single-sided or double-sided synthetic mica tape.

The utility model provides a pair of fire-retardant fire prevention low pressure power cable, beneficial effect lies in: prevent fires through being equipped with basic oversheath layer flame retardant coating, prevent through the fire-retardant layer of polyolefin and fire-retardant granule when meetting the conflagration that the intensity of a fire continues to stretch to inside the cable, prevent through being provided with the insulating layer with inside between the fire-retardant layer of polyolefin that the copper conductor from receiving high temperature and leading to damaging, prevent the crosslinked polyethylene insulating layer of copper conductor surface from being heated ageing for a long time through being equipped with the fine filler of inorganic glass, this fire-retardant fire prevention low pressure power cable fire prevention is stronger with fire behaviour, effectually protect the copper conductor, can not make cable run burnt out after meetting the conflagration again, cable run can continue normal power supply after the conflagration, be convenient for continue to use before changing the cable, the life and the emergency performance of.

Drawings

Fig. 1 is the utility model provides a fire-retardant fire prevention low pressure power cable's schematic structure diagram.

In the figure: the composite material comprises a reinforced core 1, an inorganic glass fiber filler 2, a copper conductor 3, a crosslinked polyethylene insulating layer 4, a heat insulating layer 5, a compression-resistant layer 6, a polyolefin flame-retardant layer 7, flame-retardant particles 8, a fireproof layer 9, an isolation groove 10, a through hole 11 and an outer sheath layer 12.

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, a fire-retardant fire prevention low pressure power cable, including strengthening core 1, the surface cladding of strengthening core 1 has inorganic fine filler 2 of glass, the fixed surface that inorganic fine filler 2 of glass is located strengthening core 1 is equipped with copper conductor 3, the surface cladding of copper conductor 3 has crosslinked polyethylene insulating layer 4, the surface cladding of inorganic fine filler 2 of glass has insulating layer 5, the surface cladding of insulating layer 5 has resistance to compression layer 6, the fire-retardant layer 7 of surface parcel polyolefin of resistance to compression layer 6, the surface cladding of the fire-retardant layer 7 of polyolefin has fire-retardant granule 8, the surface cladding of fire-retardant granule 8 has flame retardant coating 9, the surface cladding of flame retardant coating 9 has oversheath layer 12, a plurality of isolation tanks 10 have been seted up to fire-retardant layer 7 of polyolefin, through-hole 11 has all been seted up.

The heat insulation layer 5 is a fire-resistant ceramic fiber heat insulation layer, the isolation groove 10 and the through hole 11 are filled with fire-resistant ceramic fibers, the outer sheath layer 12 is made of a flame-retardant low-smoke halogen-free polyolefin sheath material with an oxygen index of 34-36 in an extruded mode, the inner side surface of the outer sheath is tightly bonded with the outer side surface of the waterproof layer, the compression-resistant layer 6 is a rubber compression-resistant layer, the fireproof layer is made of a single-sided or double-sided synthetic mica tape, fire is prevented by the fire-resistant layer 9 with the basic outer sheath layer 12, the fire is prevented from continuing to spread into the cable through the polyolefin flame-retardant layer 7 and the flame-retardant particles 8 when a fire occurs, the heat insulation layer 5 is arranged between the polyolefin flame-retardant layers 7 and inside to prevent the copper conductor 3 from being damaged due to high temperature, the crosslinked polyethylene insulation layer 4 on the outer surface of the copper conductor 3 is prevented, effectual 3 protection to copper conductor, can not make cable run burnt out after meetting the conflagration again, cable run can continue normal power supply after the conflagration, is convenient for continue to use before changing the cable, the life and the emergency performance of reinforcing cable.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a fire-retardant fire prevention low pressure power cable, includes and strengthens core (1), its characterized in that, the surface cladding of strengthening core (1) has inorganic glass fiber filler (2), the external fixed surface that inorganic glass fiber filler (2) are located and strengthen core (1) is equipped with copper conductor (3), the surface cladding of copper conductor (3) has crosslinked polyethylene insulating layer (4), the surface cladding of inorganic glass fiber filler (2) has insulating layer (5), the surface cladding of insulating layer (5) has resist compression layer (6), the surface cladding polyolefin flame retardant layer (7) of resist compression layer (6), the surface cladding of polyolefin flame retardant layer (7) has fire-retardant granule (8), the surface cladding of fire-retardant granule (8) has flame retardant coating (9), the surface cladding of flame retardant coating (9) has oversheath layer (12), the polyolefin flame-retardant layer (7) is provided with a plurality of isolation grooves (10), and through holes (11) are formed between the isolation grooves (10) and the heat insulation layer (5).

2. A fire-retardant fireproof low-voltage power cable according to claim 1, wherein the thermal insulation layer (5) is a fire-resistant ceramic fiber thermal insulation layer, and the isolation groove (10) and the through hole (11) are filled with fire-resistant ceramic fibers.

3. The flame-retardant fireproof low-voltage power cable according to claim 1, wherein the outer sheath layer (12) is made of a flame-retardant low-smoke halogen-free polyolefin sheath material with an extruded oxygen index of 34-36, and the inner side surface of the outer sheath is tightly bonded with the outer side surface of the waterproof layer.

4. A fire-retardant fireproof low-voltage power cable according to claim 1, wherein the pressure-resistant layer (6) is a rubber pressure-resistant layer and the fire-resistant layer is made of single-sided or double-sided synthetic mica tape.