Fireproof nitrogen supplying system for supporting human breath

Abstract

A water-resistant N2 supplying system able to support human respiration is composed of the N2 supplying pipeline and O2 detector in an enclosed space, O2 control unit connected to said O2 detector, N2 generator, and decompressing unit connected to said N2 generator for supplying N2 into said enclosed space via pipeline. As the content of O2 in air is 14-16%, it can not support combustion but can support human respiration to minimum.

Description

Technical field: [0001] The invention relates to the technical field of fire prevention systems, in particular to a fire prevention nitrogen supply system that prevents air components in a closed space from supporting combustion while supporting human breathing. Background technique: [0002] The fire protection system sold on the market is generally composed of a fire detection and alarm system and a fire extinguishing system. The fire alarm system plays the role of sensing and alarming when a fire occurs, and then the fire extinguishing system extinguishes the fire. This type of fire extinguishing system can be divided into several categories , such as gas, foam, dry powder and water fire extinguishing systems, the detection heads of fire detection and alarm systems can be divided into temperature sensing, smoke sensing and flame sensing probes, among which smoke sensing probes are the most commonly used, this type of fire fighting system has the following aspects Disadvan...

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Problems solved by technology

[0002] The fire protection system sold on the market is generally composed of a fire detection and alarm system and a fire extinguishing system. The fire alarm system plays the role of sensing and alarming when a fire occurs, and then the fire extinguishing system extinguishes the fire. This type of fire extinguishing system can be divided into several categories , such as gas, foam, dry powder and water fire extinguishing systems, the detection heads of fire detection and alarm systems can be divided into temperature sensing, smoke sensing and flame sensing probes, among which smoke sensing probes are the most commonly used, this type of fire fighting system has the following aspects Disadvantages: First, they are all based on detecting the ignited fire first, and then put out the fire, so it can only achieve the purpose of eliminating, not preventing. When extinguishing the fire, the property to be protected, even life, has been destroyed. , Second, in the fire extinguishing system that uses water as the fire extinguishing meson, such as the water sprinkler system, when it is released, the damage caused to the protected property is often greater than the damage caused by the fire. Third, fire detection and The detectors of the alarm system, especially the smoke detectors, have the possibility of false alarms, resulting in the false release of the fire extinguishing system. Fourth, it is difficult for many gas fire extinguishing systems to effectively extinguish the fire when released, and it is harmless to the human body. Fifth, dry powder and foam fire extinguishing systems will cause damage to equipment and the environment when they are released. Sixth, many halon substitute fire extinguishing agents with chemical components, such as the commonly used heptafluoropropane, although they are non-toxic themselves, are used at high temperatures. The by-products produced are harmful to the human body. Seventh, although the carbon dioxide system is effective in extinguishing fire, it can also cause people to suffocate and die, and the gas itself is dangerous because it is a high-pressure gas. Eighth, because the amount of water in the sprinkler system is limited , after exceeding its design water volume, it cannot extinguish the fire

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