Oxygen respirator is also called isolated compressed oxygen respirator.The respiratory system is isolated from the outside world, and the instrument forms an internal circulation with the human respiratory systemHigh pressure gas cylinderIt provides oxygen and has air bags to store breathing and inhaling gases. It was introduced from the former Soviet Union in the 1950s. It is a respiratory protection product that has been produced for decades and has a large quantity and wide range. Its performance is stable and reliable, and it is widely used in industries (departments) such as petroleum, chemical industry, metallurgy, coal, mining, and laboratories. It can be used by specially trained people in toxicHarmful gasWear it during rescue, accident treatment, rescue or operation in the environment (normal atmospheric pressure).
Oxygen respirator is also called isolated compressed oxygen respirator.The respiratory system is isolated from the outside world, and the instrument forms an internal circulation with the human respiratory systemHigh pressure gas cylinderIt provides oxygen and has air bags to store breathing and inhaling gases. It was introduced from the former Soviet Union in the 1950s. It is a respiratory protection product that has been produced for decades and has a large quantity and wide range. Its performance is stable and reliable, and it is widely used in industries (departments) such as petroleum, chemical industry, metallurgy, coal, mining, and laboratories. It can be used by specially trained people in toxicHarmful gasWear it during rescue, accident treatment, rescue or operation in the environment (normal atmospheric pressure).
Oxygen respirator
This AHG-2 or new oxygen respirator called HY120 includes oxygen cylinder, cleaning tank, pressure reducer,Automatic exhaust valve，
Rubber masks and other accessories.It is a device that directly transports oxygen to the human body.
120 in HY120 means that it can work in a specific environment for 2 hours after being filled with oxygen through the oxygen cylinder.
The pressure reducer reduces the pressure of high-pressure oxygen to 0.31MPa ～ 0.36MPa, and sends it to the air bag continuously through the quantitative hole.When the oxygen pressure drops from 20MPa to 2MPa, the quantitative oxygen supply basically remains unchanged.When the quantitative oxygen supply cannot meet the use needs, the oxygen shall be supplied through automatic oxygen supply or manual oxygen supply.
working principle
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Structure diagram of oxygen respirator
The gas exhaled from the lungs by the wearermask, three-way pipe, expiratory hose and expiratory valve enter the cleaning tank, and the rest gas enters the airbag after the carbon dioxide component in the exhaled gas is absorbed by the absorbent in the cleaning tank;In addition, the oxygen stored in the oxygen bottle enters the air bag through the high-pressure catheter and the pressure reducer, and the gas converges to form the oxygen containing gas. When the wearer inhales, the oxygen containing gas enters the human lungs from the air bag through the suction valve, the suction hose, and the mask, thus completing a respiratory cycle.In this cycle, since the exhalation valve and the inhalation valve are one-way valves, the air flow always flows in one direction.
Oxygen supply mode
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(1) Quantitative oxygen supply.The respirator supplies oxygen to the air bag with the oxygen flow rate, which can meet the breathing needs of the wearer under moderate labor intensity.
(2) Automatic oxygen supply.When the labor intensity increases and the quantitative oxygen supply cannot meet the needs of the wearer, the automatic supply device automatically supplies oxygen to the airbag at a flow rate of more than 60L/min, and the airbag automatically closes when it is full.
(3) Manual oxygen supply.When there is too much waste gas accumulated in the airbag and it needs to be cleared or the automatic oxygen supply cannot meet the demand or failure occurs, manual oxygen supply can be used.
Wearing mode
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First, keepFull face maskThe mirror surface is clean.When operators need to usePositive pressure air respiratorWhen checking, we must pay attention to several relevant parts, including the lens of the full face mask. We need to ensure that the entire lens is clean. Of course, in addition to dust, the full face mask of the respirator should not be contaminated by relevant harmful substances, including acidity, alkalinity, and substances with high oil content,Keep the mirror clean at all times.
Second, ensure the flexibility of key valves.The positive pressure air respirator has two key valves, namely, the suction valve and the exhalation valve. These two valves directly affect the use of the positive pressure air respirator in the later period. We must ensure that the action switch of the entire valve is flexible.In particular, attention should be paid to the stability of the link between the valve and the conduit, which is a very critical aspect.
Wearing method of oxygen respirator
Third, about the wholePositive pressure air respiratorThis is a very critical aspect. We must ensure that the gas density of the whole positive pressure air respirator is normal. The simple detection method is to open the bottle head valve. As the pressure in the pipeline and the decompression system rises, the short sound of the residual pressure alarm of the air source will be heard;After the cylinder head valve is fully opened, check that the pressure in the cylinder should be within the range of 28 Mpa~30 Mpa.
