Flame retardant characteristics of mining communication cables

Flame retardant characteristics of mining communication cables

Product Introduction of Tianjin Rubber and Plastic Cable Factory; Coal mine power cable, mining optical cable, mining communication cable【ASTP-120Communication cable, computer cable, low smoke and halogen-free series, mining rubber sheathed flexible cable, control cable, frequency conversion cable, communication cable【 High temperature resistance 】 【 High voltage cables 】 and so on

Flame retardant characteristics of mining communication cables

The communication cable used in coal mines is a key component of the underground communication system, mainly used for transmitting voice, data, and monitoring signals. Communication cables for coal mines shall comply with the standards of the Ministry of Coal IndustryMT/T 167—87The relevant standards such as "Mining Polyethylene Insulated Polyvinyl Chloride Sheathed Communication Cables" stipulate the models, specifications, technical requirements, test methods, etc. of cables to ensure their safe and reliable operation in coal mines.

Model and specifications:

Model and specification of communication cables for coal mines---Common models includeHUYVTheHUJYVTheHUYBVTheHey.TheHey.Wait. among which,HIndicating mining,URepresenting communication cables,YRepresenting polyethylene insulation,VRepresenting polyvinyl chloride sheath,JRepresenting steel copper reinforced wire core,BRepresenting woven armor,ARepresenting the aluminum polyethylene bonding protective layer,32 Indicating thin round steel wire armor and polyvinyl chloride outer coating.

Specification: Cable specifications are in logarithmic units × The number of cores is represented, such asHUYVType has 1×2、2×2、1×4、5×2 Equal specifications;Hey.Type has 30×2、50×2、80×2 Waiting for specifications.

Structure of communication cables for coal mines---High purity oxygen free copper is often used, in the form of single stranded copper wire or multi stranded copper wire, such as7/0.28mmThat is 7 root diameter0.28mmTwisted copper wires are used for transmitting electrical signals. The mainstream material for the insulation layer is polyethylene or polyvinyl chloride, and cross-linked polyethylene is used in special environments to isolate adjacent conductors and prevent signal interference or short circuits. The shielding layer can be in the form of copper wire braided shielding and aluminum-plastic composite tape wrapped shielding, which can block electromagnetic interference and prevent the leakage of the cable's own signal. The material of the armor layer is steel strip armor or steel wire armor. Some lightweight cables use galvanized steel strip, which can resist underground rock compression, mechanical collision, etc. The outer sheath is generally made of chloroprene rubber or flame-retardant polyvinyl chloride, which needs to pass flame retardant testing and have waterproof, moisture-proof, oil resistant, and flame-retardant properties.

Application scenarios of communication cables for coal mines---Laying in the tunnel, connecting the dispatch center with the telephones of each working face to achieve voice dispatch. Mobile equipment such as coal mining machines pass throughMHJYVEnhanced cable connection console, transmitting operation instructions and equipment status data. The underground camera of the monitoring system passes throughMHYVPShielded cables transmit high-definition video signals to ensure clear and stable images.

MHYVPolyethylene insulated PVC sheathed communication cable for coal mines Used for flat lanes, inclined lanes, and mechanical and electrical chambers

MHJYVReinforced core polyethylene insulated polyvinyl chloride sheathed communication cable for coal mines Used for flat and inclined tunnels with high mechanical damage

MHYBVPolyethylene insulated galvanized steel wire braided armor polyvinyl chloride sheathed communication cable for coal mines Used for main signal transmission in fields with high mechanical impact

MHYAVPolyethylene insulated aluminum for coal mines-Polyethylene bonded protective layer polyvinyl chloride sheathed communication cable Used for damp inclined shafts and tunnels

MHYA32Polyethylene insulated aluminum for coal mines-Polyethylene bonded protective layer, steel wire armor, polyvinyl chloride sheathed communication cable Used for vertical or inclined shafts

MHYVRPolyethylene insulated PVC sheathed communication flexible cable for coal mines Used for ordinary signal transmission in mining sites,Mobile use

MHYVPPolyethylene insulated braided polyvinyl chloride sheathed communication cable for coal mines Used for signal transmission in places with significant electric field interference,Used for fixed installation

MHYVRPPolyethylene insulated braided polyvinyl chloride sheathed communication flexible cable for coal mines Used for signal transmission in places with significant electric field interference,The cable is relatively soft

MHY32Polyethylene insulated steel wire armored polyvinyl chloride sheathed communication cable for coal mines Used for main signal transmission in alleyways, vertical shafts, or inclined shafts.

The production base of Tianjin Cable Factory Rubber Cable Factory covers an area of31000Square meters, more than ten production lines, annual output value can reach10More than 100 million yuan, the main products produced include PVC insulated wires and cables, flexible PVC insulated power cables, cross-linked polyethylene, coaxial RF cables, universal rubber sheathed cables, low smoke and halogen-free cables, insulated power cables, photovoltaic new energy cables, rail transit cables, flame-retardant and fire-resistant cables, polyolefin insulated sheaths, local communication cables, etc9category200Multiple models. Widely applicable in fields such as power systems, telecommunications systems, oil fields, railways, metallurgy, real estate, new energy industries, urban rail transit, etc.