Design of Fire Alarm Signal for Metallurgical Plant and Mine
The fire alarm signal for the metallurgical plant and mine is an important part of the fire protection system. It is a warning signal for the staff of the plant and mine to evacuate in time when a fire occurs, reducing the possible damage and ensuring the safety of personnel. This paper mainly discusses the design of the fire alarm signal of the metallurgical plant and mine.
The fire alarm signal of metallurgical plant and mine is usually composed of electromagnetic signal and acoustic signal. The electromagnetic signal is usually an AC signal with a frequency of 10 Hz or a DC signal. This signal is transmitted through the wires of the plant and mine to ensure that personnel in the plant and mine can receive the signal in time. The audible alarm signal is transmitted to the personnel through the sound propagation equipment. It is usually the sound of fire whistle, electric bell and bugle. The sound is high and loud, which can be heard from a long distance and lasts for a long time, guiding personnel to evacuate as soon as possible.
The fire alarm system of metallurgical plant and mine also includes control system, electric detector and control cabinet. The control system is the backbone of the whole fire alarm system. It is responsible for receiving the fire signal and controlling the sound propagation equipment to generate the corresponding audiblefire alarm signal. The electric detector is responsible for sensing smoke, heat and the like. Once the fire latent heat or smoke produced by the fire exceeds a certain threshold value, the electric detector will start the fire alarm system and generate a fire alarm signal. The control cabinet is the core of the fire alarm system of metallurgical plant and mine. It includes a indicator light, control switch and alarm switch, which is used to adjust, control and monitor the operation of the fire alarm system.
In short, the fire alarm system of metallurgical plant and mine is composed of electromagnetic signal and acoustic signal, control system, electric detector and control cabinet, which can accurately sense the smoke and heat generated by the fire and transmit an alarm signal to the personnel to remind them to evacuate in time, thus ensuring evacuation safety.
