Solid propellant acoustic resonance mixing safety state evaluation method and online monitoring system

Abstract

The invention relates to a solid propellant acoustic resonance mixing safety state evaluation method and an online monitoring system and belongs to the field of multiphase flow mixing. The method comprises the following steps of (1) acquiring safe extrusion stress sigma0 of a propellant material to be mixed; (2) acquiring the vibration acting force borne by the propellant material in the mixing process, namely the acting force F(t) at the bottom of the acoustic resonance mixing container; (3) obtaining the contact area S of the material and the bottom of the acoustic resonance mixing container to obtain the extrusion stress sigma(t), and the maximum value of the extrusion stress sigma (t) being the maximum extrusion stress sigma(m) in the mixing process; and (4) calculating that the mixing safety coefficient n of the solid propellant acoustic resonance mixing system is greater than 1, and indicating that the solid propellant acoustic resonance mixing system is in a safe state at present. According to the method, strain gauges do not need to be directly arranged in the materials, safety of the stress monitoring technology is greatly improved, dynamic safety state evaluation and monitoring can be carried out on the acoustic resonance mixing process, and safety management and control of the acoustic resonance mixing process are facilitated.

Description

technical field [0001] The invention belongs to the field of multiphase flow mixing, and more specifically relates to a method for evaluating the safety state of solid propellant acoustic resonance mixing and an online monitoring system. Background technique [0002] Acoustic resonance mixing filling technology is a new charging method, which is different from the existing mixing methods. Safety is the foundation and key technology of charging. In addition to solving the safety problems involved in the process route and equipment development, further research is needed Ensure the safety of the charge from the aspect of safety assessment, and provide guarantee for the realization of the safety requirements of the charge. There are mainly safety factors such as static electricity, temperature rise and stress in the process of acoustic resonance mixing. [0003] Static electricity and temperature can be directly detected by temperature sensors and electrostatic testers, but it...

AI Technical Summary

Problems solved by technology

However, in the process of acoustic resonance mixing of energetic materials, if the strain gauge is used to measure the stress, the strain gauge needs to be inserted into the energetic material, which has serious defects in the standardization and safety of production and cannot meet the Production Requirements for Acoustic Resonant Mixing of Energetic Materials

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