1, civil air defense sealed door nature: it is set at the outermost side of the entrance and exit, and has two functions of blocking shock waves and isolating toxic agents.
2. Nature of the sealed door: it is used for the passage leading to the bottom of the main substation and main drainage pump house in the mine, which is convenient to close and prevent sudden flooding.
Second, the characteristics are different.
1, characteristics of air defense sealed door: this door can only be selected according to the size of the hole. The advantages of reinforced concrete doors are low price and good anti-early nuclear radiation performance. However, due to its heavy weight, it is generally used for personnel entrances and exits with relatively small size.
2. The characteristics of the sealed door:
(1) is simple to operate and easy for rescuers to master. You can use a high-pressure nitrogen bottle to inflate it, or you can use a leather tiger to inflate it manually.
(2) light weight and easy to carry; Solve that problems that the traditional seal material is difficult to transport, time-consuming and laborious;
(3) The construction speed is fast, which generally takes only 5-7 minutes, and the shortest time is only 4 minutes to complete the temporary closure;
(4) Good sealing effect, low air leakage rate and good air tightness of the air bag, which can keep no air leakage for more than 24 hours.
Extended data:
The protective sealed door should be able to block the shock wave and meet the corresponding resistance requirements. The selection should meet the requirements of aperture and design pressure. Although steel doors are expensive and have poor early nuclear radiation resistance, they are usually used for large vehicle entrances and exits because of their light weight and flexible opening and closing.
This product is made of antistatic and flame retardant rubber material, which has the characteristics of light weight, convenient carrying, simple operation and fast construction speed.
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