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The anti-explosion damper is designed to protect industrial equipment such as oil and gas platforms and refineries or related buildings against the destructive effects of blast wave entry through air conditioning systems due to superheater or dust explosions.
Transmitting a large volume of air, a high level of safety, as well as high flexibility for installation on air conditioning systems are among the features of these dampers. In the anti-explosion dampers manufactured by Shahrokhi Technical Institute, the angle of the vanes and thus the sensitivity to low pressures can be adjusted. These dampers must be manually returned to their original state after an accident and closing. Anti-explosion dampers have an internal spring that helps return the vanes to their original position. Their construction is hot galvanized with anti-corrosion properties or stainless steel.
Anti-explosion dampers are used in buildings and rooms that are used to maintain critical equipment or operators and in areas where there is a high probability of explosion, such as petrochemicals, fuel storage tanks and ammunition depots. Suppose a room containing expensive electronic-control equipment or an operator is located in the middle of an ammunition store; The walls and door of the mentioned room are made of explosion-proof materials according to the standards and are resistant to the blast wave in every way, and the only way for the blast wave to penetrate, which may cause destruction, is through the air conditioning channel, which should also be installed Block the anti-explosion damper so that the chamber exposed to the explosion is safe in every way.
Spaces used: battery rooms, control rooms, switching rooms and safe buildings.
The main parts of the explosion-proof damper
Anti-explosion dampers include the following main parts:
• These dampers are made of galvanized or stainless steel
• Fully welded body with 5 mm thick sheet
• Blades and shafts with stainless steel bearings
• Adjustable spring mechanism
• Raster grid for uniform transmission of blast wave
Design criteria
These types of dampers are designed for high-risk environments with the possibility of superheat and dust explosions. These dampers are designed for pressure waves with high amplitude and limited growth time and peak pressure of 1 bar (14.5 psi). These dampers close against waves with a pressure of 0.1 bar (1.45 psi) and above.
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