A test system and method for ignition and explosion characteristics of flammable medium under high temperature and high pressure

Abstract

The invention provides a system and a method for testing ignition and explosion characteristics of a combustible medium under high temperature and high pressure and belongs to the field of gas explosion science. The experimental system comprises a cylindrical explosion vessel, a heating system, an air distribution system, an ignition system, a water cooling system, a thermocouple, a high-temperature-resistant pressure sensor and a data acquisition and control system. The test volume of 20L is a widely recognized explosion parameter determination volume worldwide at present, and explosion characteristic parameters of the combustible medium can be tested at a temperature from a normal temperature to 500 DEG C and under a pressure from a normal pressure to 5MPa. The special ignition system can realize ignition in a high-temperature and high-pressure environment while ensuring container seal and is convenient to detach, and different types of ignition heads can be replaced. Whether the combustible medium reaches an explosion state is judged by monitoring the pressure and temperature change in the vessel, and explosion characteristic parameters of different 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, in particular to a system and method for testing the ignition and explosion characteristics of combustible media under high temperature and high pressure. Background technique [0002] Combustible gas / steam explosion is when combustible gas meets a heat source (open flame or high-temperature surface, etc.) within the explosion limit range, forms a flame and spreads to the combustible gas / steam distribution space instantly, and releases a large amount of heat at the same time, resulting in high temperature and deflagration overpressure. phenomenon of destruction. It has been a serious threat to many industries involved in the preparation, use and treatment of combustible gases, such as chemical industry, machinery, automobile, textile, light industry, metallurgy, medical treatment and other industries. [0003] Combustible gas / steam explosions are characterized by their susceptibility, accid...

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Problems solved by technology

[0006] The explosion experiment device described in the domestic patent CN202614707U cannot realize temperature collection, cannot ensure uniform mixing of gas mixtures, and can only provide one ignition method

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