수소압축기 내장 충전탱크용 벨로우즈의 형상 파라미터 변화에 따른 구조 성능 고찰

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 35; no. 1; pp. 75 - 82
• Main Authors: 박우창(WOO CHANG PARK), 정민석(MIN SEOK CHEONG), 송창용(CHANG YONG SONG)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2024
• Subjects: Hydrogen refueling tank(수소충전탱크); Bellows(벨로우즈); Design parameter(설계 파라미터); Finite element analysis(유한요소 해석); Hydrogen compressor(수소압축기)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/JHNE.2024.35.1.75

In this study, design parameter exploration based on finite element analysis was performed to find the optimal shape of bellows, the key component of compressor-embedded refueling tank for a newly developed hydrogen refueling station capable of high-pressure charging above 900 bar. In the design parametric study, the design variables took into account the bellows shapes such as contour radius and span spacing, and the response factors were set to the maximum stress and the gap in the contact direction. In the shape design of the compressor bellows for hydrogen refueling station considered in this study, it was found that adjusting the contour span is an appropriate design method to improve the compression performance and structural safety. From the selection of optimal design, the maximum stress was reduced to 49% compared to the initial design without exceeding the material yield stress.