Method and device for online monitoring of multi-scenario cable fire characteristics

Abstract

The present invention relates to the technical field of automatic intelligent monitoring, in particular to an online monitoring method for multi-scenario cable fire characteristic quantities, comprising: monitoring a specified type of gas at a specified position in the measured scene with a set frequency; Monitor the temperature at the set frequency; monitor the smoke particles at the specified location in the scene under test with the set frequency, and compare them with the alarm thresholds of the set gas concentration, temperature and smoke particle concentration. At the same time, when the gas monitoring results Any type of gas monitoring results at any position in the system, and / or temperature monitoring results at any position in the temperature monitoring results; and / or when the smoke particle monitoring results at any position in the smoke particle monitoring results reach the alarm threshold, an alarm is issued. At the same time, the invention also requests protection of an online monitoring device for multi-scenario cable fire characteristics. Through the above method and device, the 24-hour uninterrupted remote real-time monitoring of the cable can be realized, and the early warning capability of the cable fire can be improved.

Description

technical field [0001] The invention relates to the technical field of automatic intelligent monitoring, in particular to an online monitoring method and device for multi-scene cable fire feature quantities. Background technique [0002] In recent years, with the rapid development of my country's economy, fires caused by electricity have increased year by year, and fires caused by wires and cables account for a considerable proportion. The fire caused by wires and cables is usually caused by the aging and damage of the outer sheath of the cable, which leads to the decline of its insulation and the short circuit of the cable; some are caused by the arc explosion and combustion of the cable caused by the excessive contact resistance in the cable, and the fire along the cable line The spread of the fire has increased the danger of the fire. At the same time, the plastic insulation layer of wires and cables will produce a lot of smoke and toxic gases during combustion, which wi...

AI Technical Summary

Problems solved by technology

Fires caused by wires and cables are usually caused by the aging and damage of the outer sheath of the cable, which leads to a decrease in its insulation and a short circuit of the cable; some are also caused by the arc explosion and combustion of the cable caused by the excessive contact resistance in the cable, and the fire along the cable line The spread of the fire increases the danger of

At the same time, the plastic insulation layer of wires and cables will produce a lot of smoke and toxic gases during combustion, which will affect the evacuation of personnel and bring great difficulties to fire escape and rescue.

At present, the fire detection method of the cable channel is single, and it is difficult for the operation and maintenance personnel to monitor the fire situation and fire development in the channel in real time

Once a fire breaks out, if the corresponding disposal cannot be carried out in the early stage of the fire in time, it will cause greater property loss.

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