FIELD: fire safety.
SUBSTANCE: stand for the research of the parameters of explosion-proof devices contains of systems monitoring and processing of the received information on the hazardous area, placed in the test box mock-up of the explosive object with an explosive fragment with an initiator of the explosion installed in it, a protective cover, and a pallet. The cover with the pallet is a single closed structure formed around the model of the explosive object, and the layout is equipped with transport and suspension systems. The protective cover is multilayered and consists of an inverted aluminium layer, then a rubber and percale layers, and the suspension system consists of a set of clamps and stretches placed on the protective cover, as well as the necessary number of anchor hooks in the ceiling, walls and floor of the test box. Inside the mock-up of the explosive object, along its internal and external perimeters, video surveillance explosion-proof are installed. The outputs from the video cameras are connected to the recording and registering equipment block, whose output is connected to the block of analyzers of the recorded oscillograms of the process of technological parameters changes in the mock-up of the explosive object. In the ceiling part of the mock-up an opening is made, which is closed by an explosion-proof element installed on a free landing on three elastic pins, one end of each is rigidly mounted in the ceiling of the mock-up, and the second has a horizontal crossbar. Between the explosive fragmentation element and the opening made in the ceiling part of the mock-up and closed by an explosion-proof element, along the front of the blast wave movement, an explosion-proof three-coordinate pressure sensor is installed, whose output is connected to the input of the recording and registering equipment block. On both sides of the pressure sensor there are temperature and humidity sensors that control the thermal regime in the mock-up, the outputs of sensors are also connected to the input of the recording and registering equipment block, and the inner and outer surfaces of the mock-up fencings are pasted with strain gauges whose outputs are also connected to the input of the recording and registering equipment block. A set of explosive fragmentation elements is installed in the mock-up, consisting of at least two explosive fragments, respectively connected to the initiators of the explosion. Additional explosion-proof video surveillance cameras are installed; they conduct additional assessment of the effectiveness of explosion-proof execution of explosive fragmentation elements and determine, at the same time, by means of computer simulation the extent of an emergency situation in case of explosions at storage facilities of explosive fragmentation elements. On the pins, to their horizontal crossbar, dynamometers are fixed, made in the form of at least two leaf springs, one end of each is rigidly fixed on the stopping sheets, and the second - on the freely spaced and female spigot sleeve. Leaf springs are made of arched type with a convexity directed away from the pins, and on the peripheral part of the convexity of each leaf spring strain gauges are fixed. On one spring - from the inside, and on the other - from the outside, to register both compressive stresses and stretching. Signals from the strain gauges are sent to the strain amplifier and from it to the recording and registering equipment block, whose output is connected to the block of analyzers of the recorded oscillograms of the process of technological parameters changes in the mock-up of the explosive object.
EFFECT: increase of effectiveness of technological equipment protection against explosions.
3 dwg
