RU2018147135A - STAND FOR DETERMINING THE EFFICIENCY OF SAFETY STRUCTURES - Google Patents

Claims (9)

1. A stand for determining the effectiveness of safety structures, containing a system for monitoring and processing information received about the hazardous area, it contains a model of an explosive object placed in a test box, with an explosive fragmentation element with an explosion initiator installed in it, a protective cover and a pallet, with the pallet is a single closed structure formed around a model of an explosive object, and the model is equipped with transport and suspension systems, while the protective cover is multilayer and consists of an aluminum layer facing inward to the model, then a rubber and percale layer, and the suspension system consists of a set of brackets and extensions, placed on a protective cover, as well as the required number of anchor hooks in the ceiling, walls and floor of the test box, and explosion-proof video surveillance cameras are installed inside the model of an explosive object, along its internal and external perimeters and, and the outputs from the cameras are connected to a block of recording and recording equipment, the output of which is connected to a block of analyzers of recorded oscillograms of ongoing processes of changing technological parameters in the model of an explosive object, and in the ceiling part of the model there is an opening that is closed by an explosion-proof element installed by free landing on three elastic rods, one end, each of which is rigidly mounted in the ceiling of the layout, and on the second there is a horizontal crossbar, and between the explosive fragmentation element and the opening made in the ceiling of the layout and the closed explosion-proof element, a three-coordinate explosion-proof pressure sensor, the output of which is connected to the input of the recording and recording equipment unit, and on both sides of the pressure sensor there are temperature and humidity sensors that control the temperature and humidity conditions in the layout, the outputs of which are also connected to the input the unit of the recording and recording equipment unit, and the internal and external surfaces of the protections fencing are glued with load cells, the outputs of which are also connected to the input of the recording and recording equipment unit, the explosion-proof panel contains a metal armored frame with metal armor plating and lead filler, and has fixed pipe supports at the ends and in the coating of the explosive object three elastic rods are rigidly fixed, which are telescopically inserted into the fixed nozzles-supports of the panel, the filler is made in the form of a dispersed air-lead system, moreover, the lead is made in the form of a crumb, and to fix the limit position of the panel to the ends of the elastic rods with abutment sheets, a damping element is attached, designed to damp the shock loads of the panel on the abutment sheets, moreover, it is attached to the opposite panel and directed in its direction, and is made in the form of a three-dimensional body with an internal cavity and surfaces equidistant to the surface m of the panel, while its internal cavity is filled with an air-lead dispersed system, and the lead is made in the form of crumbs, spherical in shape, while a flammable liquid, such as acetone, is used to initiate the explosion of an explosive fragmentation element, the calculation of the required amount of which to create a stoichiometric concentration in the room is determined by the formula

, where M is the molecular weight of the liquid; V _K - the volume of the room, l; V _B - the volume of air required for complete combustion of one molecule of a combustible liquid, l.

,

, where P _bar - barometric pressure, mm Hg; Vo = 22.4 l - the volume of the gram molecule of air at 0 ° C and a pressure of 760 mm Hg, volume (cm ³ ) of combustible liquid

where ρ is the density of the liquid, g / cm ³ , characterized in that the damping element attached to the ends of the elastic rods with stop sheets, and designed to damp the shock loads of the panel on the stop sheets, is made with an additional elastic-damping conical type link, , its top of the cone is directed towards the armored metal frame. 2. A bench for determining the effectiveness of safety structures according to claim 1, characterized in that on the conical surface of the additional elastic-damping link of the conical type, the top of the cone of which is directed towards the armored metal frame with the casing, a sensor is attached that responds to deformation, for example, a strain gauge, the output of which connected to the input of the block recording and recording equipment.