ICS27.100 F23 中华人民共和国电力行业标准 DL/T838-2024 代替DL/T838-2017 20XX-XX-XX发布燃煤火力发电企业设备检修导则 Guideofmaintenanceforcoal-firedthermalpowerplant （报批稿） 20XX-XX-XX实施 国家能源局发布DL/T838-2024 I目次 前言.................................................................................V 1范围..................................................................................1 2规范性引用文件........................................................................1 3术语和定义............................................................................4 4总体要求..............................................................................5 5汽机设备检修..........................................................................7 5.1汽轮机、给水泵汽轮机..............................................................7 5.2主汽阀、调速汽阀..................................................................8 5.3调速、保安、润滑、顶轴、密封油系统................................................8 5.4水泵、油泵、轴加风机、防爆风机、油烟风机..........................................9 5.5液力耦合器........................................................................9 5.6高压加热器、低压加热器、除氧器...................................................10 5.7凝汽器...........................................................................10 5.8其他容器、换热器.................................................................11 5.9阀门、管道及支吊架...............................................................11 5.10冷却塔及空冷凝汽器..............................................................12 5.11汽轮机设备分部及整套试运........................................................14 6电气设备检修.........................................................................14 6.1汽轮发电机.......................................................................14 6.2油浸式电力变压器及电抗器.........................................................18 6.3厂用10kV及以下辅助设备.........................................................20 6.4输变电设备.......................................................................24 6.5电气设备分部及整套试运...........................................................29 7继电保护设备检修.....................................................................30 7.1发变组保护.......................................................................30 7.2励磁调节器.......................................................................30 7.3厂用电保护.......................................................................31 7.4线路及母线保护...................................................................31 7.5电测仪表及变送器.................................................................31 7.6故障录波器.......................................................................32 7.7自动准同期系统...................................................................32 7.8直流系统.........................................................................33DL/T838-2024 II7.9交流不停电系统...................................................................33 7.10厂用电气控制系统................................................................33 7.11继电保护设备分部及整套试运......................................................34 8锅炉设备检修.........................................................................34 8.1锅炉本体.........................................................................34 8.2阀门、管道与支吊架...............................................................39 8.3烟风系统.........................................................................39 8.4空气预热器.......................................................................41 8.5制粉系统.........................................................................42 8.6循环流化床锅炉燃料供给系统.......................................................47 8.7除灰渣系统.......................................................................47 8.8干输灰系统.......................................................................49 8.9锅炉设备分部及整套试运...........................................................49 9环保设备检修.........................................................................50 9.1脱硝装置.........................................................................50 9.2除尘器................................................