SU1756924A1 - Device for demonstration of explosive hazards of combustible gas mixtures - Google Patents

Abstract

Usage: modeling explosive properties of combustible gas mixtures. SUMMARY OF THE INVENTION: When voltage is applied to an electric sparking agent mounted in a mine starter layout, the gas mixture in the ignition chamber, designed as a mine working model with a transparent face wall, is ignited and the explosion products act on the manikin placed in the chamber, which, by the action of a shock wave, overturns. In addition, the products of the explosion, acting on the safety element, made in the form of a shernier fixed by one edge on the plate body, are pulled out of the chamber in the form of tongues of flame and create a sound effect. The device also has a means of measuring the Concentration of the mixture, consisting of a movable intake located in the chamber and an indicator associated with it. 1 il. SU

Description

The invention relates to demonstration devices and can be used, for example, in the educational process.

The aim of the invention is to expand the demonstration capabilities.

The drawing shows a diagram of the device.

In the case 1 of the device, an ignition chamber 2 is installed, made in the form of a mine working model with a transparent front wall 3. The tank 4 with the gas mixture through the dispenser 5 and the nozzle b is connected to the chamber 2. The means 7 for measuring the concentration of the mixture sampling 8 mixture and the associated indicator. In layout 9,

imitating a shaft starter, an electric spark plug 10 is mounted, which, when energized from an alternating current network, generates an electrical impulse that ignites the gas mixture in the chamber. . Vent that. 12, with a length of conduit 13, serves to ventilate the chamber after the flash, as well as to demonstrate the process of degassing production. The object that perceives the action of the explosion (Mannequin 14) is mounted on a hinge in the position of unstable equilibrium and during an explosion under the action of a shock wave it overturns.

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The principle of the device for demonstrating the explosive properties of combustible gas mixtures is as follows.

To prepare the model for the demon. The next blast is ignored by the fan 2, the dummy 14 as an object perceiving the explosion becomes vertical, the metering device 5 ends with the calculated methane explosion force depending on the volume of the ignition chamber. The most rational chamber volume corresponds to a chamber with a volume of 20 liters. An explosion of 20 liters of the mixture rather clearly reproduces the simulated effect, creating the proper emotional effect due to the visual and sound perception of the flash, the smell of the explosion. Relatively small distance to the site, safety room and other limited space.

Claims (1)

Invention Formula 5 A device for demonstrating the explosive properties of combustible gas mixtures, comprising an ignition chamber with inlet and outlet gas mixture lines, a spark source, an object, 10 perceiving the action of an explosion, and an element mounted on the safety chamber against destruction of the latter element, characterized in that, in order to expand the demonstration capabilities, it 15 is provided with a simulator of a starting block placed in the chamber and a means of measuring the concentration of the mixture e, the object perceiving the explosion is made in the form of a dummy and placed in the chamber in flame ejection (not more than 35 cm) to the location of the starting block, provides safety for the surrounding The use of the proposed device for demonstrating the explosive properties of combustible gas mixtures will provide a highly informative and forward demonstration of the process of forming an emergency in all its phases, a complex didactic and emotional impact on students, which achieves a learning and educational effect, convenience and safety of use of the model in the classroom, in .eight the storage element is designed as a spring-loaded plate, hinged by one edge on the chamber, while the means for measuring the concentration of the mixture consists of a movable intake chamber located in the chamber and see the indicator associated with it, the sparking agent is placed on the simulator of the starting block, the chamber is made as a model mine workings with a transparent front wall, and the simulator of the starting block - in the form of a model of a shaft starter, 13 1 garden area, safety room and other restricted areas. Invention Formula A device for demonstrating the explosive properties of combustible gas mixtures, comprising an ignition chamber with inlet and outlet gas mixtures, a spark source, an object, perceiving an explosion and mounted on the camera a safety element against destruction of the latter, characterized in that, in order to broaden the demonstration possibilities, it equipped with a simulator of a starting block placed in the chamber and a means of measuring the concentration of the mixture e, the object perceiving the explosion is made in the form of a dummy and placed in the chamber in the location of the starting block, the storage element is designed as a spring-loaded plate, hinged by one edge on the chamber, while the means for measuring the concentration of the mixture consists of a movable intake chamber located in the chamber and see the indicator associated with it, the sparking agent is placed on the simulator of the starting block, the chamber is made as a model mine workings with a transparent front wall, and the simulator of the starting block - in the form of a model of a shaft starter, 13 1