Mechanical Design Optimization of Protective Device for Safety Valve Exhaust Flow

During maintenance operations near the exhaust outlet of an open-type safety valve discharge system, high-temperature steam is discharged, necessitating the installation of an airflow protective device to ensure personnel safety. This article takes the design of an airflow protective device for a safety valve exhaust outlet at a Nuclear Power Plant as an example. It employs the computational fluid dynamics (CFD) method to solve the impact load distribution exerted by the safety valve's airflow on the device. The impact loads are then coupled into structural stress finite element calculations to comprehensively evaluate the strength of the protective device. Based on the mechanical analysis results, the device design is optimized, providing a reference for the design and analysis of similar devices in the future.