Device and system for researching steam explosion

Abstract

The invention discloses a device for researching steam explosion. The device comprises a tank body, a decompression pipe, at least two pressure sensors, a plurality of temperature sensors, a heating device and a pedestal, wherein the tank body is used for loading experimental mediums, the top of the tank body is sealed by a cover body, and the temperature difference and the pressure difference are generated between the top and the bottom in the tank body due to a certain height of the tank body; the decompression pipe is arranged on the cover body and is communicated to the tank body, a decompression mechanism is connected to the tail end of the decompression pipe and comprises an electromagnetic valve, a module and an anti-explosion film, the module is provided with a decompression hole, the anti-explosion film is arranged on the module, the module is located above the electromagnetic valve, and is detachably assembled in the decompression pipe, the anti-explosion film is arranged on the module to seal the decompression hole, and a steam flow meter is further connected to the decompression pipe; the pressure sensors are arranged in the tank body and are used for detecting the pressures of the top and the bottom in the tank body; the temperature sensors are arranged in the tank body, are sequentially arrayed along the height of the tank body and are used for respectively detecting the temperatures of different heights in the tank body; the heating device is used for heating the experimental mediums loaded in the tank body; the pedestal is used for fixing the tank body.

Description

technical field [0001] The invention relates to an experimental device, in particular to a device for studying steam explosions. Background technique [0002] Boiling Liquid Expanding Vapor Explosion (BLEVE, Boiling Liquid Expanding Vapor Explosion) refers to a vapor explosion formed by the instantaneous release of a large amount of superheated liquid into the atmosphere. Steam explosion is a physical explosion phenomenon based on the evaporation of superheated liquid. It is the result of the coupling between the rapid expansion of liquefied gas and the constraints of storage tanks. Most of the occurrence of BLEVE is due to external heat radiation, which makes the flammable and explosive liquid in the container overheated, and the pressure in the container exceeds the pressure limit of the material at the corresponding temperature, resulting in the failure of the container, and the explosion of the flammable and explosive liquid in the container. Vaporizes, quick release. ...

AI Technical Summary

Problems solved by technology

[0005] At present, the research on the BLEVE effect mainly uses pressure vessels such as large storage tanks containing flammable and explosive liquids or medium-sized liquefied gas storage tanks. During the research process, the damage of these storage tanks is irreversible and cannot be reused. The process is dangerous and does not have precise controllability of the test process and accurate collection of parameters

So far, there is no special equipment that can study the BLEVE effect in the laboratory, which brings many difficulties to the laboratory research

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