GB/T 12234-2019 代替 GB/T 12234—2007
石油天然气工业用螺柱连接阀盖的钢制闸阀
Bolted bonnet steel gate valves for petroleum and natural gas industries
2019-10-18 发布
2020-05-01 实施
目 次
前言..........................................1
1范围..........................................1
2规范性引用文件.....................................1
3结构型式........................................2
4技术要求........................................3
4.1压力温度额定值..................................3
4.2结构长度.....................................3
4.3连接端......................................3
4.4阀体.......................................3
4.5 阀盖......................................6
4.6阀体与阀盖的连接....................................7
4.7阀体与阀盖的螺柱连接..................................8
4.8闸板..........................................8
4.9    支架.......................................9
4.10阀杆和阀杆螺母 ..................................10
4.11填料和填料箱....................................11
4.12    操作......................................12
4.13旁通装置......................................12
4.14    静压寿命.....................................12
4.15无损检测......................................13
4.16压力试验......................................13
5材料............................................13
5.1闸阀的材料......................................13
5.2抗腐蚀要求......................................15
6试验方法..........................................15
6.1总则.........................................15
6-2压力试验.......................................15
6.3阀体壁厚测量.....................................15
6.4阀杆直径测量.....................................15
6.5阀杆硬度测量.....................................15
6.6密封面硬度测量....................................15
6.7闸板磨损余量测量...................................15
6.8关闭件组合拉力试验................................ 15
6.9材质成分分析.....................................15
6.10阀体材质力学性能..................................16
6.11逸散性试验.....................................16
6-12静压寿命试验....................................16
6.13阀体标志检査...................................16
6.14铭牌内容检査...................................16
6.15无损检测.....................................16
7检验规则.........................................16
7.1岀厂检验......................................16
7.2型式试验......................................17
8标志...........................................17
8-1标志的内容.....................................17
8-2阀体和阀盖上的标志.................................17
8.3铭牌上的标志....................................18
8.4单流向房的标志...................................18
9防护、包装和贮运 ....................................18
附录A（资料性附录）订货合同数据表.............................19