Flame-retardant composite cable for mine pit

Abstract

The utility model discloses a flame-retardant composite cable for a mine pit. The flame-retardant composite cable comprises a conductive cable, a brominated epoxy resin layer, an optical fiber cable, an inner flame-retardant layer, a shielding metal net, a mica reinforced plasticizing layer, cable reinforcing ribs and an outer flame-retardant layer, the number of the conductive cables is four, the four conductive cables are wrapped in the cable insulation sleeve, and the brominated epoxy resin layer wraps the four conductive cables. An optical fiber cable and an intumescent fire retardant coating are arranged between the inner flame-retardant layer and the brominated epoxy resin layer, and the intumescent fire retardant coating binds the optical fiber cable; the inner flame-retardant layer, the shielding metal net, the mica reinforced plasticizing layer and the outer flame-retardant layer are tightly sleeved in sequence; the number of the cable reinforcing ribs is multiple, and the multiple cable reinforcing ribs are arranged in the mica reinforced plasticizing layer. The composite cable is suitable for places with severe environments such as a mine pit, the optical fiber lines can provide communication requirements in the pit, and the cable also has comprehensive performances such as high temperature resistance, chemical medicine corrosion resistance, creep resistance and electrical performance; and stable power supply is provided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to communication conductive cable technical field, concretely relates to a kind of flame-retardant composite cable for mine. BACKGROUND

[0002] Conductive cable is essential material for power supply, in the mine of heavy metal mineral such as cinnabar (mercury sulfide), not only need to ensure the power supply in the mine, but also need to ensure the service life of cable, when danger occurs, cable maximum degree, ensure the power supply in mine, also ensure the communication between inside and outside of mine, therefore, we have improved traditional cable. SUMMARY

[0003] The utility model aims at solving above-mentioned problem, and provides a kind of flame-retardant composite cable for mine.

[0004] A kind of flame-retardant composite cable for mine, it includes: conductive cable, brominated epoxy resin layer, optical fiber, inner flame-retardant layer, shielding metal net, mica reinforced plastic layer, cable reinforcing rib, outer flame-retardant layer;Conductive cable is equipped with 4, 4 conductive cables are covered in cable insulation sleeve, 4 conductive cables are covered by brominated epoxy resin layer;Between inner flame-retardant layer and brominated epoxy resin layer, optical fiber and intumescent fire retardant coating are equipped, intumescent fire retardant coating binds optical fiber;Inner flame-retardant layer, shielding metal net, mica reinforced plastic layer and outer flame-retardant layer are successively closely connected;Cable reinforcing rib is equipped with multiple, and multiple cable reinforcing ribs are arranged in mica reinforced plastic layer.

[0005] The conductive cable, optical fiber and cable reinforcing rib adopt the twisted wire or the winding mode.

[0006] The conductive cable adopts oxygen-free copper or deoxidized copper.

[0007] The conductive cable adopts 12 square cable.

[0008] The outer flame-retardant layer adopts crosslinked polyethylene material.

[0009] The technical scheme provides a kind of mine fire-retardant composite cable, it includes: conductive cable, brominated epoxy resin layer, optical fiber, inner flame-retardant layer, shielding metal net, mica reinforced plastic layer, cable reinforcement, outer flame-retardant layer;Conductive cable is equipped with 4, 4 conductive cable is covered in cable insulation sleeve, brominated epoxy resin layer covers 4 conductive cable;Between inner flame-retardant layer and brominated epoxy resin layer, optical fiber and intumescent fire retardant coating are equipped, and intumescent fire retardant coating binds optical fiber;Inner flame-retardant layer, shielding metal net, mica reinforced plastic layer and outer flame-retardant layer are sequentially closely connected;Cable reinforcement is equipped with multiple, and multiple cable reinforcement is arranged in mica reinforced plastic layer.This composite cable is suitable for the place such as mine in harsh environment, optical fiber can provide in-pit communication demand, cable also has the comprehensive performance such as high temperature resistance, chemical corrosion resistance, creep resistance and electrical property;While providing stable power supply. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 It is the structure diagram of the fire-retardant composite cable for mine of the utility model;

[0011] Fig. 2 It is the cross section diagram of the fire-retardant composite cable for mine of the utility model;

[0012] In the drawing: 1, conductive cable, 11, silicone rubber insulation sleeve, 2, brominated epoxy resin layer, 3, optical fiber, 31, intumescent fire retardant coating, 4, inner flame-retardant layer, 5, shielding metal net, 6, mica reinforced plastic layer, 7, cable reinforcement, 8, outer flame-retardant layer. DETAILED DESCRIPTION

[0013] The technical scheme will be further clearly and completely described below in conjunction with the drawings of the technical scheme, and the described embodiments are only a part of the technical scheme, not all embodiments, and all other embodiments obtained by the person skilled in the art without creative labor based on the technical scheme belong to the protection scope of the utility model.

[0014] Example 1

[0015] Referring to Figs. 1-2 As shown in the figure, a kind of fire-retardant composite cable for mine, it includes: conductive cable 1, brominated epoxy resin layer 2, optical fiber 3, inner flame-retardant layer 4, shielding metal net 5, mica reinforced plastic layer 6, cable reinforcement 7, outer flame-retardant layer 8;

[0016] The conductive cable 1 is equipped with 4, and 4 conductive cables 1 adopt oxygen-free copper or deoxygenated copper;The outer surface of each conductive cable 1 is covered with a layer of cable insulation sleeve, and the cable insulation sleeve is selected from silicone rubber insulation sleeve 11;Each conductive cable 1 adopts 10 or 12 square cable to ensure power supply end use;

[0017] 4 conductive cables 1 are bundled in the brominated epoxy resin layer 2 in a twisted manner to improve the cable toughness;

[0018] The brominated epoxy resin layer 2 covers the 4 conductive cables 1, and the brominated epoxy resin layer 2 and the silicone rubber insulation sleeve 11 electrically isolate the conductive cables 1; the conductive cables 1 and the brominated epoxy resin layer 2 form a conductive inner core.

[0019] The existing mine cable adopts power line communication (PLC) technology to supply power and transmit signals in the mine. In order to ensure the stability of communication, an optical fiber line 3 is added to ensure communication between the mine and the outside in an emergency;

[0020] The optical fiber line 3 is provided with 4 optical fiber lines 3, the 4 optical fiber lines 3 are wound on the outer surface of the brominated epoxy resin layer 2, the 4 optical fiber lines 3 form an optical fiber signal layer, and an inner flame-retardant layer 4 covers the optical fiber signal layer; the inner flame-retardant layer 4 and the brominated epoxy resin layer 2 are filled with an intumescent fire retardant coating 31, the intumescent fire retardant coating binds the optical fiber line 3, and prevents the optical fiber line 3 from moving;

[0021] The shielding metal mesh 5 is covered on the outer surface of the inner flame-retardant layer 4; the mica reinforced plastic layer 6 is covered on the outer surface of the shielding metal mesh 5; the cable reinforcing rib 7 is provided with a plurality of cable reinforcing ribs 7, the plurality of cable reinforcing ribs 7 are arranged in the mica reinforced plastic layer 6, and the plurality of cable reinforcing ribs 7 and the mica reinforced plastic layer 6 form a cable tensile support layer; the inner surface (inner wall) of the shielding metal mesh 5 is in close contact with the outer surface of the inner flame-retardant layer 4, and the outer end surface of the shielding metal mesh 5 is in close contact with the inner surface (inner wall) of the mica reinforced plastic layer 6; that is, the shielding metal mesh 5 is in close contact with the inner flame-retardant layer 4 and the mica reinforced plastic layer 6 respectively.

[0022] The optical fiber line 3 and the cable reinforcing rib 7 are bundled in a twisted or wound manner to improve the cable toughness.

[0023] The outer flame-retardant layer 8 is tightly covered on the outer surface of the cable tensile support layer;

[0024] The outer flame-retardant layer 8 is made of cross-linked polyethylene material; the outer flame-retardant layer 8 has high temperature resistance, chemical corrosion resistance, anti-creeper property and electrical property, and other comprehensive properties.

[0025] It should be understood that the various forms of the flow shown above can be used to reorder, add or delete steps. For example, each step described in the present disclosure can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present disclosure can be achieved, which is not limited herein.

Claims

1. A flame-retardant composite cable for use in mines, comprising: The product comprises a conductive cable (1), a brominated epoxy resin layer (2), an optical fiber (3), an inner flame-retardant layer (4), a shielding metal mesh (5), a mica-reinforced plasticizing layer (6), cable reinforcing ribs (7), and an outer flame-retardant layer (8). The product is characterized by having four conductive cables (1), which are encased in a cable insulation sleeve, and the brominated epoxy resin layer (2) encasing the four conductive cables (1). An optical fiber (3) and an intumescent fire-retardant coating are disposed between the inner flame-retardant layer (4) and the brominated epoxy resin layer (2), with the intumescent fire-retardant coating binding the optical fiber (3). The inner flame-retardant layer (4), the shielding metal mesh (5), the mica-reinforced plasticizing layer (6), and the outer flame-retardant layer (8) are sequentially and tightly connected. Multiple cable reinforcing ribs (7) are disposed within the mica-reinforced plasticizing layer (6).

2. The flame-retardant composite cable for mining pits according to claim 1, characterized in that: The conductive cable (1), optical fiber (3) and cable reinforcing rib (7) are bundled by twisting or winding.

3. The flame-retardant composite cable for mining pits according to claim 1, characterized in that: The conductive cable (1) is made of oxygen-free copper or deoxidized copper.

4. The flame-retardant composite cable for mining pits according to claim 1, characterized in that: The conductive cable (1) is a 12 square millimeter cable.

5. The flame-retardant composite cable for mining pits according to claim 1, characterized in that: The outer flame retardant layer (8) is made of cross-linked polyethylene.

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