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为了使高功率TEA CO2激光器主机实现小型化、轻量化,设计了一种环形流道式主机结构,将气体循环冷却系统直接作为激光器工作腔使用。与传统的圆筒式主机结构相比,占空体积减少了30%,质量减少了40%,结构对称趋向模块化,装配维修方便,提高了工程实用价值。为准确分析设计主机流场结构,运用计算流体动力学(CFD)软件Fluent进行了模拟分析,并进行了优化改进。经实验,重复频率由400 Hz提高到470 Hz,平均功率提高了16%。
In order to reduce the size and weight of a high-power TEA CO2 laser host, a ring-shaped flow path host structure is designed to directly use the gas circulation cooling system as a laser working chamber. Compared with the traditional cylinder mainframe structure, the volume of the spacers is reduced by 30% and the mass is reduced by 40%. The structure symmetry tends to be modular, and the assembly and maintenance are convenient and the engineering practical value is enhanced. In order to accurately analyze the design of the host flow field structure, using computational fluid dynamics (CFD) software Fluent simulation analysis, and carried out optimization and improvement. Experimentally, the repetition rate increased from 400 Hz to 470 Hz and the average power increased by 16%.