FIELD: fire safety.
SUBSTANCE: in a safety construction with a protective screen containing reinforced concrete panels 6000×1800 mm in size, the panel consists of destructible and non-destructible parts. The non-destructible part is made in the form of carrying ribs placed along the contour of the destructible part, and the destructible part is made in the form of at least two coaxially located depressions in the building wall, one of which, external, is formed by the planes of a regular quadrilateral truncated pyramid with a rectangular base, and the other, internal, represents two inclined surfaces connected by an edge, with formation of a groove. The wall thickness from the edge to the outer surface of the building fence must be no less than δ=20 mm. When exposed to an impact explosive load, this wall section can be divided into separate parts, and there is a protective screen against the collapsing part, from the outside of the building fence, the screen is made of high-strength material, for example, armour-piercing material, which is fixed to at least three rods located horizontally and perpendicular to the building fences, at the ends of which disks are fixed, and which pass through the holes in the protective screen. The disks located on the right side of the rods are immured in the building fence, and the discs on the left side of the rods rest against the elastic elements supporting the protective screen to the building fence. The protective screen is made in the form of a three-dimensional body with an internal cavity and surfaces that equidistant to the surfaces of the destructable part of the panel, made in the form of coaxially located niches in the building wall. Its internal cavity is filled with a disperse air-lead system, and lead is made in the form of a spherical crumb. To fix the limit position of the protective screen, an elastic damping element is attached to the ends of the supporting elastic rods with discs, to which a buffer device is attached, having the form of a cone, the vertex of which is directed towards the protective screen.
EFFECT: increased reliability of destructible explosion-proof devices operation during an emergency explosion at the facility.
2 cl, 3 dwg
