FIELD: construction engineering, particularly, equipment of systems of control, monitoring and protection of structures in emergency situations. SUBSTANCE: device has body carrying interconnected covers and drive located out of explosion-proof structure, turning drive. One of covers is made in form of armor plug and hinged to structure internal side. The second hermetic plug is installed on body from side of structure entrance. Turning drive is installed on armor plug and made in form of compensator with spring and plunger connected by means of flexible tie with hermetic plug. Drive has carrying members spaced over body axis and rigidly interconnected by guide with rotating lead screw. Installed on drive is slider made in form of rocker whose arms are rigidly connected with carriage installed along body axis on rollers and rigidly connected with hermetic plug. EFFECT: preserved sealing and structural integrity in case of emergency explosion of various ecologically hazardous objects in structure. 5 cl, 4 dwg
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