Urgently seeking advice from experts regarding the use of gasketing for hydrogen pipeline systems in hydrogen station design specifications
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This post was last edited by kj198411 on 2019-3-10 at 21:38. I currently have a project that requires hydrogen at a pressure of 12 MPa. According to clause 12.0.4 of the design standards for hydrogen stations, GB50177, for pipelines with pressures exceeding 10 MPa, male-female or grooved flanges should be used, and annealed copper plate gaskets can be employed. The provisions explain that the purpose is to achieve a more secure seal. Dear experts, what specific format should be chosen? I understand this should just be a limitation on the materials. Those who have used it before, please feel free to share your insights; are there any other standards with more specific requirements? Urgently needed, thanks! ! !
Thank you for the answer. The regulations for hydrogen refueling stations specify that the surfaces should be convex, concave, or grooved; although I personally think that a ring-shaped connection surface should also be acceptable, it’s best to follow the regulations as much as possible. An octagonal gasket is a ring-shaped gasket; can it be used on uneven surfaces?
For PTFE gaskets, 10 MPa is no problem; for pressures above 15 MPa, copper should be used, and it’s best if the copper is annealed.