Rapid testing system and method for explosion limit of combustible medium under high temperature and high pressure

Abstract

The invention provides a rapid testing system and method for an explosion limit of a combustible medium under high temperature and high pressure and belongs to the field of gas explosion science. Theexperimental system comprises a cylindrical explosion vessel, a heating system, an air distribution system, an ignition system, a water cooling system, a thermocouple, a pressure sensor and a controland data acquisition system. The test volume is 1-5L, and the explosion limit of the combustible medium can be tested at a temperature from a normal temperature to 500 DEG C and under a pressure froma normal pressure to 5MPa. The device is equipped with the water cooling system, so that rapid cooling can be realized, and the experimental efficiency is greatly improved. Whether the combustible medium reaches an explosion state is judged by monitoring the pressure and temperature change in the vessel, and the explosion limits of different gas components can be measured according to real-time monitoring data. The device can provide reliable data for preventing explosion of the high-temperature high-pressure combustible medium in industrial production.

Description

Technical field [0001] The invention belongs to the field of gas explosion research, and specifically relates to a system and method for rapidly testing the explosion limit of combustible media under high temperature and high pressure. Background technique [0002] High temperature and high pressure combustible gas / steam explosion is more destructive and harmful than normal temperature and normal pressure combustible gas explosion. The explosive characteristic parameters of most combustible gas / steam will change with the increase of temperature and pressure. Among many parameters, the explosion limit that pays more attention to is more obviously affected by temperature and pressure. The explosion limit range of most combustible gases will widen as the temperature and pressure increase. [0003] At present, the combustible gas / steam explosion limit test devices used by domestic and foreign researchers are usually relatively large. Although the test accuracy of large-volume contai...

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Problems solved by technology

[0005] The explosion experiment device described in the domestic patent CN202614707 U cannot realize temperature collection, cannot ensure the uniform mixing of gas mixture, completes an experiment cycle for a long time, and can only provide one ignition method

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