RU2015114667A - EXPLOSIVE DESTRUCTIVE DESTRUCTIVE DESIGN FOR PROTECTING ESPECIALLY HAZARDOUS PRODUCTION FACILITIES - Google Patents

Abstract

1. Explosion-proof collapsible structure for enclosing particularly hazardous industrial facilities, containing reinforced concrete panels of 6000 × 1800 mm in size, the panel consists of collapsing and non-collapsing parts, while the non-collapsing part is made in the form of load-bearing ribs placed along the contour of the collapsing part, and the collapsing part is made in at least two coaxially located recesses in the wall of the building, one of which, the outer one is formed by the planes of a regular quadrangular truncated pyramid with a rectangular the base, and the other internal, is two inclined surfaces connected by a rib to form a groove, while the wall thickness from the rib to the outer surface of the building enclosure should be at least δ = 20 mm, while under the influence of shock, explosive load this wall section can be divided into separate parts, and the area of the collapsing part of the openings is calculated by the formula:, where V is the free volume of the room, m; α is the coefficient of intensification of combustion; w is the normal flame propagation velocity in a mixture of stoichiometric composition, m / s; ρ is the density of gases flowing from the openings, kg / m; ε is the degree of thermal expansion of the combustion products; Δp is the permissible pressure in the room (5 kPa), and on the contrary to the collapsing part, on the outside of the building’s fence, there is a protective shield made of high-strength material, such as armored material, which is fixed to at least three horizontally located and perpendicular to the building’s fencing, rods, at the ends of which the disks are fixed, and which pass through the holes in the protective shield, the disks located with

Claims (6)

1. Explosion-proof collapsible structure for enclosing particularly hazardous industrial facilities, containing reinforced concrete panels of 6000 × 1800 mm in size, the panel consists of collapsing and non-collapsing parts, while the non-collapsing part is made in the form of load-bearing ribs placed along the contour of the collapsing part, and the collapsing part is made in at least two coaxially located recesses in the wall of the building, one of which, the outer one is formed by the planes of a regular quadrangular truncated pyramid with a rectangular the base, and the other internal, is two inclined surfaces connected by a rib to form a groove, while the wall thickness from the rib to the outer surface of the building enclosure should be at least δ = 20 mm, while under the influence of shock, explosive load this wall section can be divided into separate parts, and the area of the collapsing part of the openings is calculated by the formula:

, where V _o - the free volume of the room, m ³ ; α is the coefficient of intensification of combustion; w _n - normal flame propagation velocity in a mixture of stoichiometric composition, m / s; ρ is the density of gases flowing from the openings, kg / m ³ ; ε is the degree of thermal expansion of the combustion products; Δр _extra - permissible pressure in the room (5 kPa), and opposite the collapsing part, on the outside of the building’s fence, there is a protective shield made of high-strength material, such as armored material, which is fixed to at least three horizontally located and perpendicular to the building’s fencing , rods, at the ends of which the disks are fixed, and which pass through the holes in the protective screen, the disks located on the right side of the rods are walled up in the building fencing, and in the disks on the left side of the rod elastic elements abut against it, supporting the protective screen against the enclosure of buildings, while the recesses in the wall of the building, one of which, the outer one is formed by planes of a regular quadrangular truncated pyramid with a rectangular base, and the other, the inner one, are two inclined surfaces connected by an edge, filled with heat sound-absorbing material and covered with a decorative panel that is easily destroyed by explosion, characterized in that the elastic elements supporting the protective screen to the building fencing are made in the form a protective package of plate-shaped elastic elements for the protective screen of the collapsing part of the explosion-proof enclosure of buildings, each of which contains a supporting rod, one end of which is rigidly walled through the base disk of the supporting rod in a reinforced concrete panel, and on the other, free, end of the supporting rod there is a package of elastic elements for the protective of the screen, the supporting rod is rigidly and perpendicularly fixed to the base disk walled in the reinforced concrete panel, and the protective screen through the sealing the masonry is mounted on four bearing rods, while the guide sleeve is rigidly and perpendicularly fixed to one of its ends and guides it in alignment with the support rod and covers it with a gap, and the second end of the guide sleeve enters with the gap in alignment with it, the hole of the stop cover of the package of dish-shaped elastic elements, which is fixed on the free threaded end of the bearing rod with a lock washer and nut, and the package of dish-shaped elastic elements consists of serially connected dish-shaped other elements, the inner surface of the Central holes of which interacts with, coaxially located with them, the guide sleeve, and each elastic element of the plate type contains a disk-shaped elastic surface in the form of a truncated cone, large bases of which pairwise abut against each other, forming a package fixed on the guide sleeve . 2. Explosion-proof collapsing structure according to claim 1, characterized in that an additional elastic element, for example, made in the form of an elastic bellows, is coaxially and with a gap covering the plate-shaped elastic elements, between the protective screen and the thrust cover, while the rigidity of the bellows is equal to the rigidity of the disk-shaped package elastic elements. 3. Explosion-proof collapsing structure according to claim 1, characterized in that an elastic damping shell is placed between the protective screen and the thrust cover, coaxially and without gaps, covering the packet of disk-shaped elastic elements, and vibration-damper material, for example polyurethane, is placed between the disk-shaped elastic elements. 4. Explosion-proof collapsing structure according to claim 1, characterized in that in the hole of the thrust cover, coaxial to the bearing rod, there is a damping sleeve covering the bearing rod. 5. Explosion-proof collapsing structure according to p. 1, characterized in that the damping sleeve covering the supporting rod is made of an elastic mesh element, the density of the mesh structure of which is in the optimal range of values: 1.2-2.0 g / cm ³ , and the wire material of the elastic mesh elements is steel EI-708, and its diameter is in the optimal range of 0.09-0.15 mm. 6. Explosion-proof collapsing structure according to claim 1, characterized in that a conical helical spring is located in the hole of the stop cover coaxially to the bearing rod, and the larger spring base is turned towards the lock washer, and the cavity of the hole is filled with crumb from vibration damping material for example polyurethane.