RU2019144543A - STAND FOR DETERMINING THE EFFICIENCY OF SAFETY STRUCTURES - Google Patents

Claims (9)

1. A stand for determining the effectiveness of protective structures, containing a system for monitoring and processing the received information about a hazardous area, it contains a model of an explosive object placed in a test box, with an explosive fragmentation element installed in it with an explosion initiator, a protective cover and a pallet, with a cover with pallet represent a single closed structure formed around the model of an explosive object, and the model is equipped with transport and suspension systems, while the protective cover is made of multilayer and consists of an aluminum layer facing inward to the model, then rubber and percale layers, and the suspension system consists of a set of brackets and stretch marks 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 inside the model of an explosive object, along its inner and outer perimeters, video surveillance cameras are installed, made in explosion-proof design and, and the outputs from the video cameras are connected to the block of recording and recording equipment, the output of which is connected to the block of analyzers of the recorded oscillograms of the ongoing processes of changing technological parameters in the model of an explosive object, and in the ceiling of the model there is an opening that is closed by an explosion-proof element installed on a free landing on three elastic rods, one end, each of which is rigidly mounted in the ceiling of the model, and on the second there is a horizontal crossbar, and between the explosive fragmentation element and the opening made in the ceiling of the model and the closed explosion-proof element, a three-dimensional 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 thermal and humidity regime in the model, the outputs of which are also connected to the input of the block of recording and recording equipment, and the inner and outer surfaces of the model's enclosures are pasted over with strain gauges, the outputs of which are also connected to the input of the block of recording and recording equipment, the anti-explosion panel contains a metal armored frame with metal armor plating and filler with lead, has fixed branch pipes at the ends , and in the cover of the explosive object three elastic rods are rigidly embedded, which are telescopically inserted into the fixed branch pipes-supports of the panel, the filler is made in the form of a dispersed air-lead system, and the lead is made in the form of a crumb, and to fix the limiting position of the panel to the ends of the elastic rods with stop sheets, a damping element is attached, designed to damp the impact loads of the panel against the stop sheets, and it is attached opposite to the panel and directed towards it, and is made in the form of a volumetric body with an internal cavity, and surfaces that are equidistant to the surface the panel, while its internal cavity is filled with a dispersed air-lead system, and the lead is made in the form of crumbs, spherical in shape, while a combustible liquid, such as acetone, is used as the initiator of 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 is the volume of the room, l; V _B - volume of air required for complete combustion of one molecule of combustible liquid, l.

where P _bar is barometric pressure, mm Hg. Art .; Vo = 22.4 l - the volume of a gram-molecule of air at 0 ° C and a pressure of 760 mm Hg. Art., 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 the stop sheets, and designed to damp the impact loads of the panel against the stop sheets, is made with an additional elastic damping link of the conical type, while its top of the cone is directed towards the armored metal frame. 2. A stand for determining the effectiveness of safety structures according to claim 1, characterized in that on the conical surface of an additional elastic damping link of a conical type, the top of the cone of which is directed towards an armored metal frame with a skin, a sensor is attached that responds to deformation, for example, a strain gauge, the output of which connected to the input of the block of recording and recording equipment.