规范《DLT746-2001-电站蝶阀选用导则》.pdfVIP

J16 备案号 :8373-2001 EIL 中华 人 民共 和 国 电力行 业 标 准 DL/T 746一 2001 电站蝶阀选用导则 Guideonselectionofbutterflyvalvesforpowerplant 2001一02一12发布 2001一07一01实施 中华人民共和国国家经济贸易委员会 发 布 L几汀 ，山6-21犯 前 言 本标准是根据原电力工业部19%年电力行业标准计划项目(技综 1〔996]40号文)的安排制定 的。 蝶阀作为电站、热电厂供水、蒸汽、空气管路系统 (特别是冷却循环水系统)的截流、密封和在一 定范围内调节流量作用的设备，已被越来越广泛地采用。本标准是根据电站的生产发展对蝶阀的不断需 要而制定的，规定了电站蝶阀选用的基本原则，是有关设计院、电厂、生产、施工建设等单位选用蝶阀 的技术依据。 本标准的附录A、附录B是提示的附录。 本标准由电力行业电站阀门标准化技术委员会提出并归口。 本标准起草单位:长沙阀门厂、沙市阀门总厂、郑州市上街蝶阀厂。 本标准主要起草人:刘普成、谢跃龙、余芳、张云海、季桂芳、许林波。 本标准由电力行业电站阀门标准化技术委员会负责解释。 DL/T746-2001 目 次 前言 1 范围 ·····································，·············································，·····························…… 1 2 引用标准 ·······，·········································，·······························4·················一 1 3蝶阀种类及结构形式 ··············，···········，············，。······················，························。·..……。1 4 型号和参数 ········································································································一· 3 5 技术要求 ·，·，，，·‘。···，·，‘··，，，···，，，，·····，，，，，·······，，，········，，，，······，，，··一· 4 6 检验规则 ·······。···········‘·························································，···，·························…… 8 7 订货 ·······················，···············，······，···········，····················································一· 9 8 标志及供货 ····，········，·，···········，···········，····················，··································，········…… 9 附录A (提示的附录)阀体最小壁厚的计算 ·································································…… 11 附录B (提示的附录)液控止回蝶阀可调整的开闭时间及角行程 ····················，·········，·…… 11 中华 人 民共 和 国