FIELD: fire-prevention facilities.
SUBSTANCE: invention relates to protective devices used in hazardous and radioactive facilities. The method of protecting industrial buildings includes installing explosion-proof elements in the fencing structures of the building in which explosive and fire hazardous equipment functions. Explosive and flammable equipment is installed on the foundation of the building. In the side fences of the building the explosion protection elements are installed in the form of protecting collapsing structures, and for the upper fences - in the form of explosion-proof panels on the roof or the attic floor of the building. The explosion-proof plate is made in the form of a metal armoured frame with metal armoured plating and lead filling. The explosion-proof plate has four fixed bearing pipes in the butts. Four support rods, which are telescopically inserted in the fixed bearing pipes of the panel, are tightly sealed in the building coating. The filler is made in the form of dispersed air-lead system, wherein the lead is shaped in the form of crumbs. The support rods are made elastic. The explosion-proof elements cof the protecting collapsing structure of the fence are made in the form of reinforced concrete panels, each of which consists of the collapsing and indestructive parts. The indestructive part is made in the form of bearing ribs disposed along the contour of the collapsing part. The collapsing part is made in the form of at least two coaxial recesses in the wall of a building, one of which, the outer one, is formed by the planes of the regular quadrangular truncated pyramid with a rectangular base, and the other, the inner one, represents two inclined surfaces connected by an edge to form a groove. The wall thickness from the edge to the outer surface of the building fence must be no less than d = 20 mm. When exposed to an explosive shock load, this section of the wall can be split into separate parts. To the explosion-proof metal frame plate the additional elements are attached, damping the impact of the shock wave, which are made combined, as a a pack of Belleville elastic elements, each of which comprises a circular base, which by means of at least two pins is movably arranged on the abutment. One end of the pin is rigidly mounted on the abutment, and the other enters with clearance into the hole provided in the base, and fixes it by a nut. To the bottom of the base and coaxially to it the cylindrical cup is rigidly secured, with a cavity and an opening through which the rod passes with clearance, one end of which is rigidly fixed to the abutment, and the other - to the object surface. The rod slidably fits inside the sleeve, one end of which is rigidly fixed to the abutment, and the other enters movably with clearance in the cylindrical cup cavity. The package of the Belleville elastic elements is disposed with a slight preload between the abutment and the round base.
EFFECT: invention allows to improve the reliability and efficiency of operation of collapsing explosion-proof devices ensuring the safety of personnel working in explosion-hazardous facilities.
3 cl, 4 dwg
