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Experimental device and method for measuring combustion and explosion characteristics of dust cloud

A technology of explosive characteristics and experimental equipment, which is applied in the direction of measuring equipment, material explosiveness, chemical analysis by combustion, etc., can solve the problems of high price, few equipment functions, and few products, and achieve low price, multiple functions, and high precision Effect

Pending Publication Date: 2019-05-31
NINGBO UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

At present, the widely used experimental devices for testing the minimum ignition energy of dust clouds mainly include imported equipment such as Chilworth and MIKE3. There are not many mature products in China, and the equipment has fewer functions and is very expensive.

Method used

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  • Experimental device and method for measuring combustion and explosion characteristics of dust cloud
  • Experimental device and method for measuring combustion and explosion characteristics of dust cloud
  • Experimental device and method for measuring combustion and explosion characteristics of dust cloud

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The present invention discloses an experimental device for measuring the combustion and explosion characteristics of dust clouds. The main part of the entire experimental device includes a porous steady-flow powder spraying pipeline, an electric spark ignition device, a special quartz glass tube, and a pressure / temperature data A collection device and a mobile detachable fixed frame. In the process of studying the dust cloud combustion explosion experiment, the dust to be tested is sprayed uniformly and stably through the porous steady-flow powder spraying pipeline, and the electric spark ignition circuit is designed to realize two types of electricity with multiple optional energy levels: small energy and large energy. Spark ignition, the top of the quartz glass tube is designed to install explosion-venting discs of different sizes an...

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Abstract

The invention provides an experimental device and method for measuring combustion and explosion characteristics of a dust cloud. The whole experimental device comprises an electric spark ignition device, a special quartz glass tube, a porous steady-flow powder injection pipeline, a pressure/temperature data acquisition device and a movable detachable fixing frame, and characteristic parameters such as the minimum ignition energy, the explosion pressure and the combustion temperature of the combustion and explosion of the dust cloud can be measured. By the porous gas flow divider designed by the invention, uniform and stable air injection can be realized; by an electric spark trigger circuit, electric sparks with multiple selectable energy levels of small energy and large energy can be realized, and high spark energy precision can be ensured. Explosion venting pieces with different sizes and the self-made movable detachable fixing frame are assembled on the top of the special quartz glass tube, and pressures and temperatures of combustion and explosion of dust clouds with different explosion venting areas and at different positions can be researched.

Description

technical field [0001] The invention relates to an experimental device and method for studying characteristic parameters of dust cloud combustion explosion, belonging to the technical field of dust combustion explosion hazard test research. Background technique [0002] With the continuous development of industrial production technology, flammable and explosive dust has been widely used, which also greatly increases the potential risk of dust explosion. Studying the characteristic parameters of dust explosion has important practical significance for the prevention and control of dust explosion catastrophic accidents. The minimum ignition energy of dust cloud (Minimum Ignition Energy of Dust Cloud, MIE) refers to the minimum energy required to ignite the dust cloud under the most sensitive conditions. It is an important characterization parameter reflecting the hazards of combustible dust. Evaluation and effective explosion protection measures are of great significance. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/22G01N25/28G01N25/32G01N25/54G01N31/12G01D21/02
Inventor 李花庄春吉曹兆睿贺杰霍文磊朱晨宇
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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