Apparatus for testing flame propagation and flame suppression in flammable gas and air premixed gas explosion process

A flame-spreading, air-premixed technology used in materials such as explosiveness

Active Publication Date: 2013-12-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on premixed flame propagation in pipelines at home and abroad mainly focuses on turbulent flame, detonation and deflagration-to-detonation (DDT), etc. and relatively little research on premixed flame spread suppression technology

Method used

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  • Apparatus for testing flame propagation and flame suppression in flammable gas and air premixed gas explosion process
  • Apparatus for testing flame propagation and flame suppression in flammable gas and air premixed gas explosion process
  • Apparatus for testing flame propagation and flame suppression in flammable gas and air premixed gas explosion process

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Embodiment Construction

[0015] The invention discloses a test device for flame propagation and suppression during the explosion process of combustible gas and air premixed gas. And synchronous control system and automatic gas distribution system. The combustion pipeline is mainly composed of two parts: the combustion upstream pipeline and the combustion downstream pipeline. A pressure relief port is arranged on the upper side wall of the downstream pipeline near its right end to ensure the safety of the flame propagation experiment in the closed pipeline. Two valves are installed on the right end wall of the downstream pipeline, respectively It is used to evacuate the pipeline into a vacuum state and fill the premixed gas into the pipeline. A pressure gauge is connected to the inlet valve of the pipeline to observe the gas pressure in the pipeline during gas distribution. The fire arresting device system is mainly composed of a fine water mist generating device and a metal mesh fire arresting device....

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Abstract

The invention provides an apparatus for testing flame propagation and flame suppression in the flammable gas and air premixed gas explosion process. The whole apparatus comprises a combustion pipeline, a water mist generating device, a metal net fire retardance device, a high-speed camera, a schlieren system, a pressure testing system, an automatic gas distribution system, a temperature testing system, an ion probe detection system, a data acquisition instrument, a high-tension ignition system and a synchronous controller. Through the apparatus, flame propagation characteristics and flame propagation rules are researched in the premixed gas explosion process under the influences of factors such as different flammable gas components, different opening states, different ignition positions and different types of flame instability, the effects of stopping agents, fire-retardant metal nets, water mist and the like on controlling and restraining flame propagation are researched, a method and technology for restraining premixed gas flame propagation are developed under the physical-chemical coupling effect, and the inner mechanism of the apparatus is explained.

Description

technical field [0001] The invention belongs to the technical field of combustible gas safety, and in particular relates to a test device for flame propagation and suppression during the explosion process of combustible gas and air premixed gas. Background technique [0002] Flammable gases (such as hydrogen, methane and propane, etc.) are widely used in industrial processes and daily life, especially in petrochemical, electric power, metallurgy, mining, transportation and gas supply and other fields. When flammable gas is used or improperly controlled in the process of production, transportation, storage and utilization, the flammable gas accidentally leaks (or is released) into the air or the air enters the container containing flammable gas (such as storage tanks, pipelines, etc.) , forming a flammable and explosive premixed gas. This flammable premixed gas is quickly ignited when it encounters an ignition source, and then the chemical reaction propagates in the form of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/54
Inventor 孙金华肖华华段强领沈晓波彭忠璟
Owner UNIV OF SCI & TECH OF CHINA
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