Nitrogen injection and oxygen control active fire prevention system and using method thereof

Abstract

The invention discloses a nitrogen injection and oxygen control active fire prevention system. The nitrogen injection and oxygen control active fire prevention system comprises a nitrogen supply device, a control module and at least one fire prevention protective space; the nitrogen supply device introduces nitrogen into the fire prevention protective space; and the control module comprises a main controller, an oxygen concentration upper limit module, an oxygen concentration lower limit module, an alarming controller and an alarming device. The using method of the nitrogen injection and oxygen control active fire prevention system includes the following steps that firstly, a threshold is set; secondly, nitrogen is input; thirdly, the concentration value of oxygen in the fire prevention protective space is detected; and fourthly, the oxygen concentration value is judged. The nitrogen injection and oxygen control active fire prevention system accurately achieves the condition of guaranteeing safety in real time, plays an active fire prevention effect and guarantees the safety of the environment, personnel and property.

Description

technical field [0001] The invention belongs to the field of safety and fire prevention, and in particular relates to an active fire prevention system for injecting nitrogen and controlling oxygen and a method for using the same. Background technique [0002] At present, for the sake of fire safety, various automatic fire extinguishing systems are usually installed in buildings. For closed spaces with important equipment or materials (such as various computer rooms, important material warehouses, etc.), in order to prevent the protected objects from being fouled by the fire extinguishing medium, a chemical or inert gas fire extinguishing system is often installed. These gas fire extinguishing systems must use a large number of high-pressure steel cylinders or large-capacity pressure vessels to store the fire extinguishing medium required for fire extinguishing on site for a long time, and release it when a fire occurs, and use the chemical or physical effects of gas to extin...

AI Technical Summary

Problems solved by technology

An important defect of various gas fire extinguishing systems is that it will inevitably cause damage to the ecological environment (chemical substance or gas hazards), hazards to personnel in the protected space (including suffocation and poisoning), and damage to internal equipment and materials (cold shock, jet impact, etc.)

Even some so-called gas fire extinguishing systems that can control the fire extinguishing concentration to achieve harmless to the safety of personnel, in fact, in actual use, it is difficult to achieve the various conditions for ensuring safety (such as the volume of the protective space, The amount of fire extinguishing agent, etc.), so it is still unable to achieve the goal of safety and no harm

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