Mining explosion-proof monitoring signal line MHYV1 * 4 * 7/0.28

conductorUsing annealed bare copper wire, it is composed of 7 copper wires with a diameter of 0.43mm twisted together to form a single core. There are a total of 4 such cores, which have good conductivity and flexibility, ensuring stable signal transmission and adapting to complex underground laying environments24.

insulating materialUsually high-density polyethylene or polypropylene, it has excellent insulation properties and can effectively prevent signal leakage and external interference. The color of the insulated wire is marked according to the full chromatographic standard for easy identification and installation2.

sheathGenerally, blue low-density polyethylene or polyvinyl chloride material is used, which has good wear resistance, corrosion resistance, and moisture resistance, and can protect the internal core from external environmental erosion, extending the service life of the cable2.

explosion-proof performanceMeets the explosion-proof requirements for mining and is suitable for mining environments with flammable and explosive gases. Through special structural design and material selection, it can effectively prevent explosion accidents such as gas and coal dust caused by electric sparks or high temperatures generated during the use of cables6.

flame retardant performanceHas good flame retardant properties, uses insulation and sheath materials that are not easily flammable, can prevent or delay the spread of flames when encountering open flames, reduce the risk of fire, and ensure the safety of underground personnel and equipment6.

signal transmissionAdopting a multi-core structure, the wire core has low resistance, good conductivity, and low signal transmission attenuation. It can accurately and quickly transmit various signals in the monitoring system, such as temperature, gas concentration, equipment operation status, etc., to ensure the normal operation of the monitoring system5.

environmental adaptabilityThe working temperature range is relatively wide, generally from -40 ℃ to+50 ℃, and it can work stably in high and low temperature environments in mines. At the same time, it has good resistance to moisture, dust, and chemical corrosion, and can adapt to harsh working environments underground8.

mechanical strengthHas certain tensile strength and bending resistance, can withstand a certain degree of tension, bending, and compression, and is not easily damaged during underground laying and use. The bending radius of the cable shall not be less than 10 times the diameter of the cable, making it easy to lay in spaces such as tunnels18.

environmental monitoringUsed to connect environmental monitoring equipment such as gas sensors, carbon monoxide sensors, temperature sensors, humidity sensors, etc. in the mine, transmit various environmental parameter signals to the monitoring center, so that the staff can grasp the underground environmental conditions in real time and discover safety hazards in a timely manner4.

Equipment MonitoringMonitoring devices that can connect mining machinery such as coal mining machines, tunneling machines, and hoists, transmit equipment operation status, fault information, etc., achieve remote monitoring and fault diagnosis of equipment, and improve equipment operation efficiency and safety.

video surveillanceProvide signal transmission channels for underground cameras and other video surveillance equipment, transmit the collected video image signals to the monitoring room, so that staff can intuitively understand the production operation and personnel activities underground.

communication systemAs a part of the mine communication system, it is used to connect communication equipment such as telephones and walkie talkies, achieve voice communication and data transmission between underground personnel, and ensure smooth underground communication.