DEVICE FOR DETERMINING THE PARAMETERS OF GAS-SEPARATION Russian patent published in 2017 - IPC G01N25/20 G01K17/00 G01F1/66 

FIELD: measuring equipment.

SUBSTANCE: invention is intended to determine the maximum gas evolution rate (Wmax), the temperature of the beginning of the exothermic processes (Tn), the induction period (Tind), the total volume of released gases (Vg) at atmospheric pressure and can be used in the chemical and petrochemical industries at any enterprises and plants, where it is possible to get flammable substances in a mixture with an oxidizer for high-temperature operations. A device is proposed for determining the parameters of gas evolution, containing an air thermostat with an electric heater and a thermistor. Inside the thermostat there are two cells made of stainless steel, made with the possibility of pouring in them liquid samples, while the cells are equipped with hermetically sealed lids, in which thermocouples are mounted. The covers have openings for connection to the gas outlet tubes, which are connected to ultrasonic gas flow rate meters with installed piezoelements and a gas switch at the outlet. The thermocouples are connected to the input of an analog-to-digital converter whose output is connected to the input of a controller whose output is connected via a RS232/USB interface to a personal computer, and a thermistor is connected to the inputs of an analog-to-digital converter and a PID controller whose output is connected to an electric heater. The ultrasonic gas flow rate meter is connected via the RS232/USB interface to a personal computer, which is based on a processor configured to: visualize experimental data in real time, record data to a file, and view experimental files.

EFFECT: increasing the accuracy of simultaneous measurement of the flow rate of gas products, the possibility of simultaneous selection of both liquid and gas samples.

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