10kV-level reflective fluorescent mining power cable

Abstract

The utility model relates to a 10kV-level reflective fluorescent mining power cable, which is characterized by comprising three phase line units, two monitoring line units, a ground line unit, an inner filling body, a reinforced braid layer and an outer sheath, a central filling rope is also arranged; the cable has the characteristics of wear resistance, water resistance, flame retardance, intelligent monitoring and the like, better meets the use requirements on power transmission and power distribution and power utilization in a special working environment of a large mine, simultaneously adopts a fluorescent material in a filling body in the cable, has certain brightness in a dark environment, can be distinguished conveniently, and is provided with a linear luminous band on the surface, so that the service life of the cable is prolonged. Certain guiding assistance can be provided when a person or a machine moves, collision damage is avoided, searching and positioning are easier when the cable needs to be maintained and replaced, and the service life of the whole cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a 10kV-level reflective fluorescent mining power cable. Background Art

[0002] Currently, the mining industry generally needs to power mechanical equipment underground and lighting equipment in mine tunnels. The cables used generally have the following problems: mines often have high temperatures and humid or waterlogged environments, so high requirements are placed on the heat resistance, waterproofness, and moisture resistance of the cables. When various mining equipment moves, the cables need to move with the equipment to provide power, so the wear resistance requirements of the alignment sheath are also very stringent. At the same time, most areas in the mine are still in a dark environment. The cables laid in the mine are difficult to distinguish and are easily damaged by collisions. In addition, it is not easy to find the cables when they need to be repaired or replaced. Summary of the Invention

[0003] In response to the problems mentioned in the background technology, the utility model provides a 10kV reflective fluorescent mining power cable, which is used to meet the power supply needs of machinery and lighting equipment in mines. It has good heat resistance, wear resistance and moisture resistance. A fluorescent light source is provided in the sheath, which is easy to identify and find, and thus easy to repair and replace.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A 10kV reflective fluorescent mining power cable, characterized by comprising three phase line units, two monitoring line units, a ground line unit, an inner filling body, a reinforced braided layer and an outer sheath;

[0006] Each phase line unit includes a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and a composite braided layer. The conductor is a Category 5 annealed tinned soft copper conductor, which is combined by bundle twisting and overall twisting. The inner shielding layer and the outer shielding layer are both made of a semiconductor material with added carbon black, which plays a role in uniform electric field. The insulating layer is made of ethylene propylene rubber insulating material. The inner shielding layer, the insulating layer and the outer shielding layer are extruded on the conductor through a three-layer co-extrusion device. The composite braided layer is arranged on the outermost layer of the phase line unit and is compositely woven from tinned copper wire and fiber yarn, with a braiding density greater than or equal to 85%;

[0007] Each monitoring line unit includes a monitoring line conductor and a monitoring line insulation layer. The monitoring line conductor is formed by twisting a plurality of tinned copper conductors. The monitoring line conductor is extruded with a monitoring line insulation layer made of EPDM. The monitoring line unit is mainly used to monitor the volume resistance change of the insulation layer of the phase line unit, thereby providing an early warning of the working status of the cable phase line unit.

[0008] The ground wire unit is a bare copper conductor connected to the composite braided layer of the phase wire unit, and the inner shielding layer, outer shielding layer and composite braided layer are at the same potential as the ground wire unit;

[0009] The phase line unit, monitoring line unit and ground line unit are twisted together to form a cable core assembly, and inner filling bodies made of fluorescent rubber material are provided in the gaps and on the outer surface of the cable core assembly;

[0010] A reinforcing braided layer is provided outside the inner filling body. The reinforcing braided layer is made of aramid yarn material through a 36-spindle braiding machine, which can increase the overall mechanical strength of the cable and has a certain light transmittance to allow the light emitted by the inner filling body to pass through; the reinforcing braided layer is provided outside the outer sheath made of polyurethane material.

[0011] A further solution is: in order to more accurately position the axis when bundling the cable core assembly, a central filling rope is provided, and the phase line unit, the monitoring line unit and the ground line unit are bundled into a round cable core assembly with the central filling rope as the axis, and the pitch diameter multiple of the cable is 20-25;

[0012] A further solution is that: two opposite luminous bodies with a certain width are provided on the outer diameter of the outer sheath, forming linear luminous bands along the axial direction on two opposite radial sides of the outer sheath.

[0013] A further solution is: in order to enhance the mechanical strength of the cable while meeting the light transmittance, the braiding density of the reinforced braided layer is 20%-30%.

[0014] The beneficial effects of the utility model are: it has the characteristics of wear resistance, waterproofness, flame retardancy and intelligent monitoring, and better meets the requirements for power transmission and distribution in the special working environment of large mines. At the same time, fluorescent materials are used in the filling body of the cable. The cable as a whole has a certain brightness in a dark environment, which can be easily distinguished. The linear luminous strip is arranged on the surface, which can provide certain guidance assistance when people or machinery move, avoiding collision damage. It is also easier to find and locate when the cable needs to be repaired or replaced, thereby extending the service life of the cable as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Example

[0017] like Figure 1As shown, a 10kV reflective fluorescent mining power cable is characterized by comprising three phase line units, two monitoring line units, a ground line unit 3, an inner filling body 4, a reinforcing braided layer 5 and an outer sheath 6;

[0018] Each phase line unit includes a conductor 11, an inner shielding layer 12, an insulating layer 13, an outer shielding layer 14, and a composite braided layer 15. The conductor 11 is a Class 5 annealed tinned soft copper conductor, which is bundle-twisted and twisted. The inner shielding layer 12 and the outer shielding layer 14 are both made of a semiconductor material with added carbon black, which acts as a uniform electric field. The insulating layer 13 is made of ethylene propylene rubber insulating material. The inner shielding layer 12, the insulating layer 13, and the outer shielding layer 14 are extruded onto the conductor 11 using a three-layer co-extrusion device. The composite braided layer 15 is arranged on the outermost layer of the phase line unit and is compositely woven from tinned copper wire and fiber yarn, with a braiding density greater than or equal to 85%.

[0019] Each monitoring line unit includes a monitoring line conductor 21 and a monitoring line insulation layer 22. The monitoring line conductor 21 is formed by twisting a plurality of tinned copper conductors. The monitoring line conductor 21 is extruded with a monitoring line insulation layer 22 made of EPDM. The monitoring line unit is mainly used to monitor the volume resistance change of the insulation layer 13 of the phase line unit, thereby providing an early warning of the working status of the cable phase line unit.

[0020] The ground wire unit 3 is a bare copper conductor connected to the composite braided layer 15 of the phase wire unit. The inner shielding layer 12, the outer shielding layer 14 and the composite braided layer 15 are at the same potential as the ground wire unit 3.

[0021] The phase line unit, monitoring line unit and ground line unit 3 are twisted together to form a cable core assembly, and an inner filling body 4 made of fluorescent rubber material is provided in the gap and on the outer surface thereof;

[0022] The inner filling body 4 is provided with a reinforcing braided layer 5 on the outside. The reinforcing braided layer 5 is made of aramid yarn material through a 36-spindle braiding machine, which can increase the overall mechanical strength of the cable and has a certain light transmittance to allow the light emitted by the inner filling body 4 to pass through; the reinforcing braided layer 5 is provided with an outer sheath 6 made of polyurethane material on the outside.

[0023] In order to more accurately position the axis when twisting the cable core assembly, a central filling rope 7 is provided. The phase line unit, monitoring line unit and ground line unit 3 are twisted into a round cable core assembly with the central filling rope 7 as the axis. The pitch diameter multiple of the cable is 20-25.

[0024] The outer diameter of the outer sheath 6 is provided with two opposite luminous bodies 61 with a certain width, forming linear luminous bands along the axial direction on two opposite radial sides of the outer sheath 6.

[0025] In order to enhance the mechanical strength of the cable while ensuring light transmittance, the braiding density of the reinforced braided layer 5 is 20%-30%.

Claims

1. A 10kV reflective fluorescent mining power cable, characterized by It includes three phase line units, two monitoring line units, a ground line unit, an inner filling body, a reinforced braided layer and an outer sheath; Each phase line unit includes a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and a composite braided layer. The conductor is a Category 5 annealed tinned soft copper conductor, which is combined by bundle twisting and overall twisting. The inner shielding layer and the outer shielding layer are both made of a semiconductor material with added carbon black, which plays a role in uniform electric field. The insulating layer is made of ethylene propylene rubber insulating material. The inner shielding layer, the insulating layer and the outer shielding layer are extruded on the conductor through a three-layer co-extrusion device. The composite braided layer is arranged on the outermost layer of the phase line unit and is compositely woven from tinned copper wire and fiber yarn, with a braiding density greater than or equal to 85%; Each monitoring line unit includes a monitoring line conductor and a monitoring line insulation layer. The monitoring line conductor is formed by twisting a plurality of tinned copper conductors. The monitoring line conductor is extruded with a monitoring line insulation layer made of EPDM. The monitoring line unit is mainly used to monitor the volume resistance change of the insulation layer of the phase line unit, thereby providing an early warning of the working status of the cable phase line unit. The ground wire unit is a bare copper conductor connected to the composite braided layer of the phase wire unit, and the inner shielding layer, outer shielding layer and composite braided layer are at the same potential as the ground wire unit; The phase line unit, monitoring line unit and ground line unit are twisted together to form a cable core assembly, and inner filling bodies made of fluorescent rubber material are provided in the gaps and on the outer surface of the cable core assembly; A reinforcing braided layer is provided outside the inner filling body. The reinforcing braided layer is made of aramid yarn material through a 36-spindle braiding machine, which can increase the overall mechanical strength of the cable and has a certain light transmittance to allow the light emitted by the inner filling body to pass through; the reinforcing braided layer is provided outside the outer sheath made of polyurethane material.

2. A 10kV reflective fluorescent mining power cable as claimed in claim 1, characterized in that A central filling rope is also provided. The phase line unit, monitoring line unit and ground line unit are bundled into a round cable core assembly with the central filling rope as the axis. The pitch diameter multiple of the cable is 20-25.

3. A 10kV reflective fluorescent mining power cable as claimed in claim 1 or 2, characterized in that The outer diameter of the outer sheath is provided with two opposite luminous bodies with a certain width, forming linear luminous bands along the axial direction on two opposite radial sides of the outer sheath.

4. A 10kV reflective fluorescent mining power cable as claimed in claim 1 or 2, characterized in that The braiding density of the reinforced braided layer is 20%-30%.

5. A 10kV reflective fluorescent mining power cable as claimed in claim 3, characterized in that The braiding density of the reinforced braided layer is 20%-30%.

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