Confined space operation type double-pipeline ventilation device and working method thereof

Abstract

The invention discloses a confined space operation type double-pipeline ventilation device and a working method thereof. The confined space operation type double-pipeline ventilation device comprisesa floating mechanism, an air blowing mechanism, an air extracting mechanism and a first monitoring mechanism, and the first air outlet end of the air blowing mechanism communicates with the floating mechanism. When the confined space operation type double-pipeline ventilation device is used, the first air inlet end of the air blowing mechanism is arranged outside a confined space, and the first air outlet end of the air blowing mechanism stretches into the confined space to communicate with the floating mechanism; and the second air outlet end of the air extracting mechanism is arranged outside the confined space, and the second air inlet end of the air extracting mechanism stretches into the confined space. According to the confined space operation type double-pipeline ventilation deviceand the working method thereof, gas is the confined space can be sufficiently stirred and extracted and meanwhile quickly and effectively replaced with fresh air in the atmosphere to enter the confined space, and the life security of operators and rescue workers in the confined space is ensured. The confined space operation type double-pipeline ventilation device is simple in structure, convenientto operate and easy to widely popularize, and the probability of death of the operators in the confined space can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of equipment and equipment for limited space operations and emergency rescue, and particularly relates to a double-pipe ventilation device for limited space operations and a working method thereof. Background technique [0002] When cleaning the sewage pool, that is, working in a limited space is prone to fainting accidents or fatal accidents. There are more than 100 similar fatal accidents every year. Tracing it to its cause can have many kinds, but the most fundamental reason is that in the sewage pool, the air in the limited space has poisonous and harmful gases or poor air lack of oxygen, which is the main cause of death accidents. If the air in the limited space of the sewage pool is a normal human body can breathe a safe gas, it will not cause fatal accidents due to inhalation of bad gas or lack of oxygen. [0003] Therefore, as long as there is no toxic and harmful gas or poor air lacking oxygen in ...

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Problems solved by technology

[0009] However, the ventilator disclosed in the above-mentioned utility model penetrates into the limited space operating range through a single hose, blows normal air in the atmosphere into the limited space, and cannot extract the bad gas that is heavier than air in the bottom layer in the limited space. There are still toxic and harmful gases or poor air lacking in oxygen

Once the air in the confined space stops flowing or the flow is weakened or the bad air is not completely replaced, or there is a continuous source of harmful gas leakage, the bad air will cause the workers to breathe and cause casualties.

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