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Cylinder optimization design of 90 MPa high‑pressure diaphragm compressor
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Kai LI1, Shengdong REN1, Shengtao ZHANG2, Xiaohan JIA1
Fluid Machinery | 2025, 53(4) : 83 - 92
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Fluid Machinery | 2025, 53(4): 83-92
Cylinder optimization design of 90 MPa high‑pressure diaphragm compressor
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Kai LI1, Shengdong REN1, Shengtao ZHANG2, Xiaohan JIA1
Affiliations
  • 1School of Energy and Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China
  • 2Shandong Himile Manufacturing Co.，Ltd.，Weifang 261500，China
Published: 2025-04-30 doi: 10.3969/j.issn.1005-0329.2025.04.012
Outline
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To address the cylinder fracture issue in 90 MPa diaphragm compressors for hydrogen refueling stations，a thermo‑mechanical coupling model of the high‑pressure stage membrane head was established using Ansys Workbench finite element analysis software. The cylinder strength was analyzed，and an improved through‑hole bolt cylinder connection structure was proposed and verified. Results show that when the cylinder bottom fillet radius is 0.5 mm，the local stress reaches 1 665 MPa，exceeding the material yield strength and causing stress concentration，leading to fatigue failure under cyclic alternating loads. Increasing the fillet radius to 3 mm reduces the maximum stress to 793 MPa，meeting strength requirements. The improved through‑hole bolt structure reduces the maximum stress by 17% for cylinders with the same fillet radius. At a 3 mm fillet radius，the optimized structure achieves a maximum stress of 649 MPa，satisfying design specifications. This study provides reference for structural design of 90 MPa diaphragm compressor cylinders.

diaphragm compressor  /  cylinder failure  /  thermo‑mechanical coupling model  /  plastic deformation  /  through‑hole cylinder structure
李凯, 任省栋, 张升涛, 贾晓晗. 90 MPa高压隔膜压缩机油缸优化设计. 流体机械, 2025 , 53 (4) : 83 -92 . DOI: 10.3969/j.issn.1005-0329.2025.04.012
Kai LI, Shengdong REN, Shengtao ZHANG, Xiaohan JIA. Cylinder optimization design of 90 MPa high‑pressure diaphragm compressor[J]. Fluid Machinery, 2025 , 53 (4) : 83 -92 . DOI: 10.3969/j.issn.1005-0329.2025.04.012
Appendix
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Year 2025 volume 53 Issue 4
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Article Info
doi: 10.3969/j.issn.1005-0329.2025.04.012
  • Receive Date：2024-07-24
  • Online Date：2026-10-20
  • Published：2025-04-30
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History
  • Received：2024-07-24
  • Revised：2024-11-14
Affiliations
    1School of Energy and Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China
    2Shandong Himile Manufacturing Co.，Ltd.，Weifang 261500，China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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