Experimental facility for testing autoignition temperature of gas in high-pressure oxygen-enriched environment

Abstract

The invention relates to an experimental facility for testing the autoignition temperature of a gas under a special dangerous (high-pressure oxygen-enriched) condition. The experiment facility comprises a gas supply part, a temperature-controlled heating part, a reactor part, a safety interlocking device and a PC (Personal Computer), wherein the reactor part comprises a cylinder body and a flange plate which are sealed; and 6 pipelines are distributed on the flange plate and are respectively used for vacuumizing, pressure detection, temperature detection, stirring, electromagnetic valve evacuation and being used as a safety valve. When the temperature raises by more than 20DEG C sharply, the sample burns; and when the safety valve trips out, the gas autoignites or deflagrates. According to the experimental facility, the autoignition temperature data is obtained by adjusting the system pressure and continuous temperature rise under the sealed condition, automatically recording the temperature data and judging whether the autoignition happens, the measuring conditions of the autoignition temperature are broadened; and the experimental facility disclosed by the invention is simpler to operate and realizes computer automation of experimental operation and data recording.

Description

technical field [0001] The invention relates to an experimental device for testing the autoignition temperature of gas in a high-pressure oxygen-enriched environment. Background technique [0002] The autoignition temperature, also known as the ignition temperature, is the lowest temperature at which a substance burns due to an exothermic oxidation reaction that releases heat at a rate higher than the heat dissipation rate under certain conditions without flame or sparks. The autoignition temperature of the gas has a great relationship with the ambient pressure, oxygen content and container size. [0003] Existing experimental devices test the autoignition temperature of combustibles under normal pressure atmospheric atmosphere, the test objects are solid and liquid, and cannot complete the measurement of autoignition temperature under different pressure oxygen-enriched conditions. According to the literature search and market survey, there is no relevant institution in Chi...

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Problems solved by technology

[0003] The existing experimental device tests the autoignition temperature of combustibles in atmospheric atmosphere at atmospheric pressure. The test objects are solids and liquids, and it is impossible to complete the measurement of autoignition temperature under different pressure oxygen-enriched conditions.

According to the literature search and market survey, there is no relevant institution in China to test the autoignition temperature of gas in a high-pressure oxygen-enriched environment, and no similar test device has been designed.

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