Method of Improving Oxygen Utilization Rate of Mine Self-rescuer

Abstract

The method for improving the oxygen utilization rate of the mine self-rescuer uses a mouthpiece, the mouthpiece has a size and curve consistent with the inside of the mouth, occupies most of the space inside the mouth, and prevents breathing gas from passing through. The mouth is exchanged and directly reaches the trachea, the problems of incomplete exhaust gas discharge and serious oxygen waste are solved, the feeling of high breathing resistance and unsatisfactory breathing process is relieved, the workload of the self-rescuer is reduced, and the intensity of the chemical reaction inside the self-rescuer is reduced , improve the utilization rate of oxygen, prolong the use time of the self-rescuer, and increase the survival probability of people in distress.

Description

technical field [0001] The invention relates to the field of self-rescuers used in coal mines, in particular to a method for improving the oxygen utilization rate of self-rescuers used in mines. Background technique [0002] A large amount of harmful gas will be produced when a coal mine fire or gas and coal dust explosion occurs, which will cause fatal injuries to underground construction workers; Respiratory protection, people in distress need to escape from the disaster area within the time when the self-rescuer can effectively generate enough oxygen. It can be seen that improving the oxygen utilization rate of the mine self-rescuer and prolonging the use time of the self-rescuer are very important for people in distress to escape from the disaster area; The mining self-rescuers can be divided into filter self-rescuers, chemical oxygen self-rescuers and compressed oxygen self-rescuers according to their principles and uses. These types of mine self-rescuers have a common ...

AI Technical Summary

Problems solved by technology

[0002] A large amount of harmful gas will be produced when a coal mine fire or gas and coal dust explosion occurs, which will cause fatal injuries to underground construction workers; Respiratory protection, people in distress need to escape from the disaster area within the time when the self-rescuer can effectively generate enough oxygen. It can be seen that improving the oxygen utilization rate of the mine self-rescuer and prolonging the use time of the self-rescuer are very important for people in distress to escape from the disaster area; The mining self-rescuers can be divided into filter self-rescuers, chemical oxygen self-rescuers and compressed oxygen self-rescuers according to their principles and uses. These types of mine self-rescuers have a common feature to prevent the nasal cavity from inhaling toxic and harmful gases. , just clamp the nostrils with a nose clip, bite the tooth pads in the breathing mouthpiece tightly, and use the clean air in the mouth breathing self-rescuer; but they also have a common shortcoming. Due to the unreasonable structure of the breathing mouthpiece, there is also exhaust gas discharge. The oxygen rate is low and the oxygen waste is serious, because the mouth is in an open state at this time, and the space in the mouth can accommodate a large amount of gas. When the waste gas is exhaled, the mouth is full of waste gas. The waste gas in the mouth first enters the user's lungs, and then the clean air can enter the mouth and lungs. At this time, when exhaling the waste gas, the clean air that has not been used in the mouth must be exhaled first to exhale the waste gas in the lungs, so that the mine can save itself The oxygen utilization rate of the self-rescuer is low; because the oxygen in the clean air is diluted by the waste in the mouth, the breathing resistance will be large after long-term use, and the breathing process will not be smooth and more oxygen will be needed, which will increase the work of the self-rescuer The load, the intensification of the internal chemical reaction and other factors shorten the service life of the self-rescuer

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