Safe air regeneration device for coal mine underground emergency shelter

Abstract

The invention relates to a safe air regeneration device for a coal mine underground emergency shelter. The device comprises an air regeneration unit, and is characterized in that the air regeneration unit comprises a shell and a potassium superoxide medicinal plate group arranged in the shell, wherein an air inlet passage and an air outlet passage are formed in the shell. According to the device, reaction temperature is greatly reduced, and the pressure of a cooling system is reduced. The air regeneration device has the beneficial effects that the oxygen yield can be controlled, the oxygen concentration can be kept between 18.5 to 22 percent all the time according to the number and the state of people in a pit, and energy resources are not required; the device is easy and convenient to operate, and secondary disasters caused by maloperation can be avoided; the device is high in safety; the system is simple; and the air regeneration cost can be greatly lowered, and huge social benefits and economic benefits after the device is popularized and used are created.

Description

technical field [0001] The invention relates to an emergency escape device in a coal mine, in particular to a safe air regeneration device for an emergency escape place in a coal mine. Background technique [0002] Underground coal mine emergency shelter: refers to the place that provides life support for the safety of victims after an emergency occurs in the coal mine. It consists of two types: refuge chamber and rescue cabin, with refuge chamber as the main one. [0003] Air regeneration: The human body normally consumes about 576 liters of oxygen every day, discharges 490 liters of carbon dioxide, and discharges 180 g of water (this value is greatly reduced in a resting state throughout the day). In the normal atmosphere, the oxygen content is 20-21%, the carbon dioxide content is 0.02%, and the moisture content is between 15-80%. , will soon lose the basic conditions for human existence. Air regeneration is to maintain various indicators in the air and regenerate the t...

AI Technical Summary

Problems solved by technology

[0008] 2) Poor maintainability: The daily leakage rate of hyperbaric oxygen cylinders in my country is 0.3%, which cannot be preserved for a long time. In order to ensure that the refuge facilities can function, the oxygen cylinders need to be replaced regularly (usually every six months), which increases maintenance costs and difficulty

[0009] 3) Higher requirements for operators: dozens of high-pressure oxygen cylinders form a complex gas supply system, and any misoperation will cause serious consequences

Including: the high-speed pure oxygen flow and the temperature generated by the impact of organic matter will cause fire; high-pressure oxygen will cause instantaneous pressurization in a closed space, which may cause pressurization disasters, and the process of pressure relief is also likely to mix with combustible gases outside the cabin to form a high-explosive gas. dangerous gas

When the detection instrument fails, the oxygen concentration is not easy to control, etc.

[0010] 4) The system is complex

The compressed oxygen system produces oxygen, has a diffusion system and absorbs carbon dioxide and moisture, the system is complex and the economic cost is high

[0011] 5) The air quality is not high

Compressed air oxygen generation technology, the air in the sealed space is smelly and the air quality is very poor

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