Explosion-Relief Door Technology Principle

When the explosion shock wave reaches the set pressure threshold, the explosion-relief bolts shear and break, and the explosion-relief plate opens along a preset trajectory under the guidance of the winch, forming an effective pressure relief channel. Explosion-relief doors are usually equipped with a movable explosion-relief plate. When the explosion shock wave acts on the movable plate, the plate rotates around its axis, releasing pressure to the outside through the through-hole on the door. After the impact force disappears, the elastic reaction force of the spring drives the movable plate to return to its original position. After the shock wave is released, the main structure of the door frame remains intact, preventing damage to the building's load-bearing structure. Furthermore, some explosion-relief doors employ patented designs, such as a gear and rack mechanism controlled by a cylinder, where the movable door body is connected to the explosion-relief door body only by a hinge. Upon impact, the hinge bends to improve the explosion-relief effect; when the pressure is too high, the hinge breaks to protect the main structure of the door body, and the door can be reused simply by replacing the hinge.