液氢阀门　通用规范 Valves for liquid hydrogen—General specification  ICS  27.010 CCS  F  19   中华人民共和国国家标准 GB/T 45027—2024 2024-12-3 1发布 2025-04-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布 目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   2 4     技术要求   ······························································································   3      4.1     基本要求   ·························································································   3      4.2     材料   ······························································································   3      4.3     结构设计   ·························································································   5      4.4     常温性能   ························································································   10      4.5     低温性能   ························································································   13 5     试验方法   ····························································································   14      5.1     试验条件   ························································································   14      5.2     材料   ·····························································································   15      5.3     结构设计   ························································································   16      5.4     脱脂检查   ························································································   16      5.5     常温性能   ························································································   16      5.6     低温性能   ························································································   20      5.7     标志检查   ························································································   28 6     检验规则   ····························································································   28      6.1     出厂检验   ························································································   28      6.2     型式试验   ························································································   28 7     标志   ·································································································   30      7.1     一般要求   ························································································   30      7.2     阀体上的标记   ···················································································   30      7.3     标牌上的标志   ···················································································   31      7.4     其他标记   ························································································   31 8     包装和储运   ··························································································   31 附录 A （规范性）　焊接要求焊接要求   ································································   32 附录 B （资料性）　阀门主要零部件金属材料推荐牌号   ···············································   34 附录 C （资料性）　阀体加长颈推荐最小长度   ·························································   35 附录 D （资料性）　气动控制阀泄漏率系数   ···························································   36 附录 E （资料性）　液氢温度与压力对应表   ···························································   37 参考文献   ································································································   38 GB/T 45027—2024     Ⅰ