Cable tunnel temperature monitoring alarm system

Abstract

The invention discloses a cable tunnel temperature monitoring and alarming system. A plurality of fireproof doors are arranged in a cable tunnel at intervals. Each fireproof door divides the cable tunnel into a plurality of fireproof areas, and a fireproof area is arranged between every two adjacent fireproof doors. A cable support is erected in the cable tunnel, and the cable support and a cablesupported by the cable support penetrate through all the fireproof areas. In each fireproof area, each cable is provided with a temperature sensor and a normally open temperature control switch, and when the temperature is higher than 80 DEG C, the normally open temperature control switch is switched on. A monitoring room is arranged corresponding to the cable tunnel, an electric control device isarranged in the monitoring room, the temperature sensors are connected with the electric control device, and the electric control device is connected with a display screen. The normally-open temperature control switches of all the fireproof areas are connected in parallel through lines to form a switch unit, the switch unit is connected with an audible and visual alarm and a power supply in series, and the audible and visual alarm is located in a monitoring room. Regional and sub-cable dual-channel monitoring is carried out on the cable tunnel, and the fault tolerance is high.

Description

technical field [0001] The invention relates to cable tunnel safety technology. Background technique [0002] The application of electric energy has penetrated into every corner of modern society, from every family to every factory, from industrial production to agricultural production to modern service industry, all aspects are inseparable from the support of electricity. [0003] A cable tunnel refers to a tunnel used to lay cables. The cable tunnel has many advantages, the most obvious of which is that it is a one-time investment construction. There are many cable supports in the tunnel. After the tunnel is completed, it only needs to be inspected on time, and there is no need to propose a new cable plan to the relevant departments. [0004] There are many cables in the cable tunnel. Once there is a problem with the cable tunnel, the impact will be great, resulting in unpredictable economic losses; therefore, it is necessary to ensure that the cable tunnel is always in a...

AI Technical Summary

Problems solved by technology

In order to prevent the cable from catching fire, the staff needs to patrol the cable tunnel from time to time, check the heating conditions of the cables everywhere, and promptly check and deal with the overheating of the cable, which brings a relatively large maintenance workload to the cable tunnel, and when the cable suddenly When the heat is increased due to overload, the staff cannot guarantee that they are just patrolling and discovering the problem

[0005] When a certain cable is overloaded, it will cause serious heating of the cable, but the severe heating of one cable cannot immediately increase the temperature in the entire cable tunnel or the overall temperature in a fire protection zone

Therefore, the overall monitoring of the temperature in an area has hysteresis, and abnormal conditions cannot be quickly detected when a certain cable is overloaded

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