Experimental system and method for flammable gas explosion in a small-sized pipeline

Abstract

The invention provides a flammable gas explosion system and method in a small-sized pipeline. The system comprises a flammable gas explosion experiment section in the small-sized pipeline; an acetylene driving section used for detonating a non-sensitive mixed gas; a hydrogen bottle, a nitrogen bottle, a carbon monoxide bottle, an oxygen bottle and an acetylene bottle which are used for providing acombustible gas and air components; a vacuum system used for pumping the experiment section and related pipelines to a vacuum state; a gas mixing system for stirring a flammable mixed gas in the experiment section to be uniformly mixed; and supporting power distribution equipment and datum measurement and acquisition equipment. The experimental procedure is as follows: after an experiment systemis pumped to the vacuum state, according to requirements of working conditions, a certain ratio of the flammable mixed gas is poured into the experiment section, ignition is started and data begin tobe recorded, after explosion is completed, a gas is discharged, and the experiment is finished. The explosion system provided by the invention adopts acetylene and oxygen as detonating gases, and hashigh safety; and simulated gas components are more, and the flammable gas components in a containment after a serious accident of a nuclear reactor happens are more realistically simulated.

Description

technical field [0001] The invention relates to the technical field of combustion and explosion research of hydrogen and carbon monoxide produced under serious reactor accident conditions, in particular to an experimental system and method for combustible gas explosions in small-sized pipelines. Background technique [0002] Since the Three Mile Island nuclear accident in the United States, many foreign researchers have begun to study the generation, combustion and explosion of hydrogen under severe accidents in pressurized water reactor nuclear power plants. The hydrogen explosion occurred in the Fukushima nuclear accident in Japan, which has attracted great attention at home and abroad. In the event of a serious accident in a nuclear reactor, hydrogen production is usually divided into two stages: inside the pressure vessel and outside the pressure vessel. The source of hydrogen generation in the pressure vessel includes: the reaction of metal (such as zirconium cladding)...

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Problems solved by technology

The shock wave generated by the explosion will destroy the structure of the containment vessel, resulting in the leakage of radioactive materials

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