System and method for realizing synchronous control of multiple targets in deflagration experiment test system

Abstract

The invention relates to a system and a method for realizing synchronous control of multiple targets in a detonation experiment test system. The system comprises a shock tube, a premixed gas supply system, a flame retardant injection system, a flame signal acquisition system, a pressure signal acquisition system, a data acquisition system, a laser schlieren system, a high-pressure ignition systemand a synchronous control system for controlling the systems, the shock tube comprises a plurality of experiment pipelines and a visual observation window experiment section which are connected in sequence; the premixed gas supply system is communicated with the interior of the shock tube to generate premixed gas with a preset equivalence ratio and input the premixed gas into the shock tube; the flame retardant spraying system is connected with the visual observation window experiment section; the flame signal acquisition system and the pressure signal acquisition system are arranged on the side wall of each section of experiment pipeline; the laser schlieren system is used for measuring distribution images of typical free radical concentration and temperature of the deflagration flow field; the high-pressure ignition system is connected with the end of the shock tube and used for ignition. The system and the method can be widely applied to the field of safety science and technology.

Description

technical field [0001] The invention belongs to the field of safety science and technology, and relates to a system and method for realizing synchronous control of multiple targets in a deflagration experiment test system. Background technique [0002] The deflagration of gas / air premixed gas in coal mines has brought great disasters to mine safety production. At the same time, this kind of problem has always been a classic and frontier problem in the study of mechanics and safety. [0003] In recent years, scholars' research methods can be divided into two categories: numerical simulation research and shock tube experimental research. At present, although the numerical simulation research has been able to reveal the flow phenomenon in the process of flame propagation, it is helpful to understand the transition from laminar flame to turbulent flame, combustion instability and flame shape change, etc., but the calculation results may be affected by the algorithm and mesh The...

AI Technical Summary

Problems solved by technology

However, when the shock tube cooperates with the ultra-high-speed laser schlieren and transient spectrum test system for microscopic flow field testing, it involves time-scale control problems of multiple targets with large time differences, such as spark ignition response time, shock front arrival Observation window time, flame front arrival time at the observation window, control response time of inert flame retardant injection system, transient spectrum ICCD camera electronic shutter response time and ultra-high-speed camera CCD electronic shutter response time, etc.

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