Combustible liquid vapor explosion and explosion suppression characteristic test system

Abstract

The invention discloses a combustible liquid vapor explosion and explosion suppression characteristic test system. The system comprises an explosion tank, a double heating temperature-control system, a gas distribution system, a double ignition delay explosion suppression system, and a data test and acquisition system. The explosion tank is provided with a window and six through holes. The explosion tank is covered by a heating sheet of the double heating temperature-control system on the explosion tank. An insulation material is covered on the heating sheet. The temperature-control system is connected with the heating sheet and an air heater. An air compressor of the gas distribution system communicates with a through hole I through the air heater, an ejector, and an ejector pipe. A gas discharge pipe communicates with a through hole II. A vacuum pump communicates with a through hole III. A static pressure sensor communicates with a through hole IV. An ignition electrode of the double ignition delay explosion suppression system is arranged in the explosion tank, and is connected with a delay circuit and a high-voltage power source through the through hole V. An explosion suppression tank is arranged on the top of the explosion tank. A gas generator is arranged in the explosion suppression tank. A nozzle is arranged on the bottom of the explosion suppression tank. A dynamic pressure sensor of the data test and acquisition system is arranged on the through hole VI, and is connected with an oscilloscope through a signal amplifier. The system provided by the invention has the advantages of simple application, multiple test functions, and high precision.

Description

technical field [0001] The invention belongs to the technical field of flammable liquid explosion and explosion suppression testing, and relates to a test system for flammable liquid steam explosion and explosion suppression characteristics. Background technique [0002] At present, domestic systems that can test the ignition and explosion characteristics and explosion suppression characteristics of flammable liquids are still scarce, and the existing ignition and explosion suppression test systems mainly have the following technical problems: [0003] First, the existing experimental devices are mainly aimed at the determination and research of the explosion, propagation characteristics and explosion suppression characteristics of flammable gases or dusts, and most of them cannot realize the determination of the explosion characteristics and explosion suppression characteristics of flammable liquids; [0004] Second, the existing experimental devices are generally only capa...

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Problems solved by technology

[0003] First, the existing experimental devices are mainly aimed at the determination and research of the explosion, propagation characteristics and explosion suppression characteristics of flammable gases or dusts, and most of them cannot realize the determination of the explosion characteristics and explosion suppression characteristics of flammable liquids;

[0004] Second, the existing experimental devices are generally only capable of carrying out explosion experiments at normal temperature and pressure, and cannot complete the determination of various parameters during the explosion process under high temperature conditions;

[0005] Third, most of the explosion chambers of existing experimental devices are long and narrow pipelines, which limits the scope of application of its experimental results to a large extent;

[0006] Fourth, most of the existing large-volume, cylindrical or spherical experimental devices are below 100L, resulting in a large difference between the entire experimental environment and the actual environment, and the experimental data obtained have little guiding significance for larger space explosions;

[0008] Sixth, during the experiment, the air tightness of the device, heating method, heat preservation effect, sample injection method, uniformity and accuracy of gas distribution in the pipeline, high temperature resistance performance of the sensor, and oscilloscope triggering method all affected the correctness of the experimental data, resulting in the It is very difficult to carry out such experiments;

[0009] Seventh, the existing experimental devices are generally unable to adjust the timing of the explosion suppression agent at the millisecond level, and carry out various explosion suppression experiments based on this

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