Mining safety control cable

Abstract

The utility model relates to a mining safety control cable. The cable comprises a plurality of insulating wire cores, each insulating wire core is composed of a conductor and an insulating layer, the plurality of insulating wire cores are wrapped by a double-layer flame-retardant wrapping tape to form a cable core, flame-retardant fillers are arranged among the plurality of insulating wire cores, a metal shielding layer is arranged outside the cable core, an inner lining layer is extruded outside the metal shielding layer, and the inner lining layer is arranged outside the metal shielding layer. And the outer sheath is extruded outside the lining layer. The cable is suitable for complex environments of mines, has excellent flame retardation performance, also has the advantages of bending resistance, moisture resistance and the like, and reliably provides a stable power transmission function.

Description

TECHNICAL FIELD

[0001] The utility model relates to a control cable, especially a mine safety control cable. BACKGROUND

[0002] The mineral industry is one of the important pillars of the national economy, and provides raw materials and energy transmission for various industries. In the mineral process, power transmission and equipment connection are indispensable, and the mine cable is the key component to realize these functions. Due to the particularity of the mine environment, there is a high demand for safety performance such as high temperature, electromagnetic interference, moisture resistance, etc. Therefore, a mine safety control cable needs to be provided. SUMMARY

[0003] The utility model discloses a kind of mine safety control cables of flame-retardant, moisture-proof, good flexibility, bending resistance, power transmission stability.

[0004] The technical scheme of the utility model is: a kind of mine safety control cable, the cable includes multiple insulated cores, the insulated core is composed of conductor and insulating layer, the multiple insulated cores are wrapped into cable core by double-layer flame-retardant tape, the multiple insulated cores are provided with flame-retardant filling, the cable core is provided with metal shielding layer outside, the metal shielding layer is extruded and packed inner liner outside, the inner liner is extruded and packed outer sheath outside.

[0005] Preferably, the conductor is the fifth type of soft structure conductor in accordance with GB / T3956.

[0006] Preferably, the insulating layer is a ceramicized silicone rubber insulating layer.

[0007] Preferably, the flame-retardant filling is high-flame-retardant alkali-free glass fiber filling.

[0008] Preferably, the metal shielding layer is a copper wire braiding layer, and the braiding density is greater than or equal to 85%.

[0009] Preferably, the inner liner is a high-density flame-retardant polyethylene inner liner.

[0010] Preferably, the outer sheath is a ceramicized silicone rubber outer sheath.

[0011] The utility model has the advantages that:

[0012] (1) The ceramicized silicone rubber has excellent fireproof and high-temperature resistance. When the ceramicized silicone rubber is exposed to fire, the internal ceramic filler will form a hard ceramic layer, which can effectively slow down the spread of fire. During the combustion process, no toxic gas and smoke are generated, which is beneficial to the rescue work at the fire scene.

[0013] (2) High-density polyethylene has excellent chemical stability, its density is usually greater than 0.94g / cm 3 , can resist most acid and alkali erosion, water absorption is also very low, can effectively play a moisture-proof effect, ensure the safety and stability of power transmission. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the structural schematic diagram of the utility model.

[0015] In the figure, 1 is a conductor, 2 is an insulating layer, 3 is a flame-retardant filling, 4 is a flame-retardant wrapping, 5 is a metal shielding layer, 6 is an inner liner, and 7 is an outer sheath. DETAILED DESCRIPTION

[0016] A mine safety control cable, the cable comprises a plurality of insulated cores, the insulated core is composed of a conductor 1 and an insulating layer 2, the plurality of insulated cores are formed into a cable core by wrapping a double-layer flame-retardant wrapping 4, the plurality of insulated cores are provided with a flame-retardant filling 3, a metal shielding layer 5 is arranged outside the cable core, the metal shielding layer 5 is extruded with an inner liner 6, and the inner liner 6 is extruded with an outer sheath 7.

[0017] The conductor 1 is a fifth type soft structure conductor in accordance with GB / T3956, facilitating the bending movement and laying of the cable.

[0018] The insulating layer 2 is a ceramicized silicone rubber insulating layer, and the maximum working temperature can reach 180 degrees, greatly ensuring the transmission of electric energy.

[0019] The flame-retardant filling 3 is a high-flame-retardant alkali-free glass fiber filling.

[0020] The metal shielding layer 5 is a copper wire braiding layer, and the braiding density is greater than or equal to 85%, which can effectively prevent electromagnetic interference.

[0021] The inner liner 6 is a high-density flame-retardant polyethylene inner liner.

[0022] The outer sheath 7 is a ceramicized silicone rubber outer sheath, which is high-temperature resistant and still has good elasticity at-50 DEG C.

[0023] The ceramicized silicone rubber in the utility model has excellent fireproof and high-temperature resistant performance, when the ceramicized silicone rubber is exposed to fire, the ceramic layer formed by the ceramic filler in the interior of the ceramicized silicone rubber can effectively slow down the spread of fire, and no toxic gas and smoke are generated in the combustion process, which is beneficial to the rescue work at the fire scene.

[0024] High-density polyethylene has excellent chemical stability, its density is usually greater than 0.94g / cm 3, can resist most acid and alkali erosion, water absorption is also very low, can effectively play the role of moisture-proof, ensure the safety and stability of electric energy transmission.

[0025] The utility model is suitable for the environment of more complex mine, and reliably provides stable electric power transmission function.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mine safety control cable, characterized by: The cable comprises a plurality of insulated cores, the insulated core is composed of a conductor (1) and an insulation layer (2), the plurality of insulated cores are formed into a cable core around a double-layer flame-retardant wrapping tape (4), a flame-retardant filling (3) is arranged between the plurality of insulated cores, a metal shielding layer (5) is arranged outside the cable core, an inner liner (6) is extruded outside the metal shielding layer (5), and an outer sheath (7) is extruded outside the inner liner (6).

2. A mine safety control cable according to claim 1, characterised in that: The conductor (1) is a soft structure conductor of the fifth type according to GB / T3956.

3. A mine safety control cable according to claim 1, characterised in that: The insulation layer (2) is a ceramicized silicone rubber insulation layer.

4. A mine safety control cable according to claim 1, characterised in that: The flame-retardant filling (3) is a high-flame-retardant alkali-free glass fiber filling.

5. A mine safety control cable according to claim 1, characterised in that: The metal shielding layer (5) is a copper wire braiding layer, and the braiding density is greater than or equal to 85%.

6. A mine safety control cable according to claim 1, characterised in that: The inner liner (6) is a high-density flame-retardant polyethylene inner liner.

7. A mine safety control cable according to claim 1, characterised in that: The outer sheath (7) is a ceramicized silicone rubber outer sheath.

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