Tunnel cable fire monitoring device and early warning method

Abstract

The invention discloses a tunnel cable fire monitoring device and an early warning method. The tunnel cable fire monitoring device comprises a signal acquisition unit for acquiring data parameters related to cables and a fire, a central processing unit for receiving and processing the data parameters of the signal acquisition unit, and an output unit for receiving and outputting command signals ofthe central processing unit. According to the tunnel cable fire monitoring device provided by the invention, tunnel cables can be monitored in real time, the data parameters associated with the firecan be acquired, the possibility of fire occurrence and the fire can be judged according to the range of the parameters, and advanced early warning is carried out, so that the fire is avoided and theloss caused by the cable fire is reduced; and whether the fire occurs or not and the possibility of occurrence of fire is detected from the source, and the occurrence of the tunnel cable fire can be completely eradicated.

Description

technical field [0001] The invention belongs to the field of fire safety, in particular to a tunnel cable fire monitoring device and an early warning method. Background technique [0002] Electric energy is one of the essential energy sources for industrial production and daily life. With the rapid development of my country's economy, urban infrastructure and buildings are increasing. After these infrastructure and buildings occupy the ground and space, some power cables are forced to change Take the underground tunnel or trench, so that the power transmission cables are stacked on the metal bridge, and the metal sheath of the cables stacked on the bridge will generate an alternating magnetic field when the alternating current passes, which makes the cables in the alternating magnetic field The metal sheath will generate an induced electromotive force and form a circulating current. These circulating currents will cause the cable to heat up and reduce its insulation. In severe...

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Problems solved by technology

[0002] Electric energy is one of the essential energy sources for industrial production and daily life. With the rapid development of my country's economy, urban infrastructure and buildings are increasing. After these infrastructure and buildings occupy the ground and space, some power cables are forced to change Take the underground tunnel or trench, so that the power transmission cables are stacked on the metal bridge, and the metal sheath of the cables stacked on the bridge will generate an alternating magnetic field when the alternating current passes, which makes the cables in the alternating magnetic field The metal sheath will generate an induced electromotive force and form a circulating current. These circulating currents will cause the cable to heat up and reduce its insulation. In severe cases, it may cause a breakdown and short circuit and cause a fire. At the same time, strong current transmission will cause static electricity to be generated on the metal bridge. There is a fire risk of discharge and puncture short circuit.

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