Multi-scene cable fire characteristic quantity online monitoring method and device

Abstract

The invention relates to the technical field of automatic intelligent monitoring, in particular to a multi-scene cable fire characteristic quantity online monitoring method, which comprises the following steps of: monitoring a specified type of gas in a specified position of a measured scene at a set frequency; monitoring the temperature of the specified position in the measured scene at a set frequency; monitoring smoke particles at the specified position in a measured scene at a set frequency; comparing the gas concentration, the temperature and the smoke particle concentration with set gasconcentration, temperature and smoke particle concentration alarm thresholds; and at the same moment, when any type of gas monitoring result at any position in the gas monitoring results and / or a temperature monitoring result at any position in the temperature monitoring results and / or the smoke particle monitoring result at any position in the smoke particle monitoring results reaches an alarm threshold, giving an alarm. Meanwhile, the invention also requests to protect a multi-scene cable fire characteristic quantity online monitoring device. Through the method and the device, 24-hour uninterrupted remote real-time monitoring of a cable can be realized, and the fire early warning capability of the cable is 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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