正蓝电站二期600MW空冷凝汽器.doc

SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf1 of 77 SPX Doc No D0029091 Rev 0 SPX 文件号 D0029091 版本 0 ZHENGLAN II POWER STATION 2 x 600 MW 正蓝电站二期 2 x 600 MW SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf2 of 77 ZHENGLAN II POWER STATION 2 x 600 MW 正蓝电站二期 2 x 600 MW SPX Contract No 260 03366 SPX 合同号 260 03366 AIR COOLED CONDENSER ACC 空冷冷凝器 ACC BASIC ENGINEERING 基础设计 Modified Control Description 控制描述修改版 SPX Doc No D029091 SPX 文件号文件号 D029091 Rev 0 Date Feb 23rd 2007 版本 0 日期 2007 年 2 月 23 日 Rev0Drawn MerfortChecked TechetReleasedFebr 23rd 2007 版本0起草 Merfort校核 Techet签发2007 年 2 月 23 日 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf3 of 77 TAG Designation 符号说明 Components 组成 Drain system LCA10 LCA88 排液冷凝水系统 LCA10 LCA88 Steam system MAG10 MAG93 蒸汽系统 MAG10 MAG93 Air extraction system MAJ02 MAJ80 真空系统 MAJ02 MAJ80 Evacuation system MAJ85 MAJ95 抽真空系统 MAJ85 MAJ95 Referenced Documents 参考文件 P I Diagram Drawing No 3317 5 001 Rev 5 P I 图号 3317 5 001 Rev 5 Distribution Customer BDT Z CDP Sg CDM Me 发送 客户 BDT Z CDP Sg CDM Me SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf4 of 77 Contents 目录 0Revision 88 版本 88 1Description of the Air Cooled Condenser design 99 设计说明 99 2DCS System For Air Cooled Condenser 1010 ACC DCS 系统 1010 2 1Interface Exchange Between ACC DCS and Power Station DCS 1111 ACC DCS 与电站 DCS 系统之间的信号交换接口 1111 2 2DCS Operation Modes 1212 DCS 运行模式 1212 3Description of Process Mode of Operation 1313 流程 运行模式说明 1313 4Function 1414 功能 1414 4 1General Description 1414 概述1414 5Control Function and Purpose of ACC Control System 1515 ACC 控制系统的控制功能和目的 1515 5 1Purpose of ACC Control System 1515 ACC 控制系统的目的 1515 5 2Main Software Components of Control System 1717 控制系统的主要软件构成 1717 6Start Up ACC System 1818 启动 ACC 系统 1818 7Shut Down ACC System 2020 停止 ACC 系统 2020 7 1Consequence of vacuum breaker opening 2020 真空破坏阀断路器分闸后的影响 2020 8Subloop Control SLC Motorized Valves 2121 电动阀 子回路控制 SLC 2121 8 1Start 2121 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf5 of 77 启动2121 8 1 1Summer Time Ambient temperature 3 0 C 2121 夏季条件 环境气温 3 0 2121 8 1 2Winter Time Ambient temperature 3 0 C 2222 冬季条件 环境气温 3 C 3434 夏季条件 环境气温 3 0 3434 10 1 2Winter Condition Ambient Air Temp 3 C 3737 冬季条件 环境温度 3 C 3737 10 1 3Switching of Setpoint of the exhaust steam Pressure Control Only for the start up 3838 压力控制设置点的启动 仅适用于启机 3838 10 1 4Release of exhaust steam Pressure Control for Fan Control 4141 风机控制的排汽压力控制释放 4141 10 2Operation 4242 操作4242 10 2 1Fan Switching Sequences 4444 风机转换次序 4444 10 3Switch over to the various fan speed stages 4545 不同风机速度挡的转换 4545 10 3 1Switching High LOW Speed 4646 从高速向低速的转换 4646 10 3 2Switching OFF HIGH Speed 4646 从关闭向高速的转换 4646 10 3 3Manual fan operation 4848 手动风机操作 4848 10 4Faults 4949 故障4949 10 4 1Vibration fault on MAG fans 4949 振动故障 4949 10 4 2Gearbox oil pressure fault 5151 变速箱油压故障 5151 10 4 3Exhaust steam pressure Failure 5252 排汽压力故障 5252 10 4 4Gearbox Heating Failure 5353 变速箱加热故障 5353 10 5Alarms 5454 警报5454 10 5 1Alarm Condensate or Air extraction temp too low e g Street 1 Section 1 5454 警报 冷凝或抽真空温度过低 例如 1 列 1 区 5454 10 5 2Reset of Alarm Condensate Temperature or Air extraction temp Too Low 5858 警报 冷凝温度或抽真空温度过低 复位 5858 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf7 of 77 10 6Freezing Protection 6060 防冻保护 6060 10 6 1 Setting Freezing Protection I e g Street 1 Section 1 6162 防冻保护 1 设置 例如列 1 区 1 6162 10 6 2 Setting Freeze Protection II e g Street 1 Section 1 6465 防冻保护 2 设置 例如列 1 区 1 6465 10 6 3 Reset Freeze Protection II 6768 防冻保护 2 的复位 6768 10 6 4Reset Freeze Protection I 6768 防冻保护 1 的复位 6768 10 6 5Setting Winter protection C f c Warming Cycle e g in street 1 6869 冬季保护设置 逆流冷凝器升温循环 例如列 1 6869 10 6 6 Reset of Winter Protection C f c Warming Cycle 7172 冬季保护设置 逆流冷凝器升温循环 7172 10 7Disconnection Program 7172 断开程序 7172 11 Procedure in the event of blackout 7273 停电的措施 7273 12 rocedure in the event of transformer undervoltage 7273 变压器欠压的措施 7273 12 1Procedure in The Event of Emergency Power Operation 7273 应急电源操作程序 7273 12 2Transformer undervoltage monitoring and process consequence on fan re start 7374 变压器欠压监测和风机再启动步骤 7374 12 3Transformer Trip and Fan restart consequences 7475 变压器跳闸和风机再启动步骤 7475 13 Summary of Adjustable Controller Parameters 7576 可调控制器参数摘要 7576 14 附件和图形清单 7677 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf8 of 77 0Revision 版本 Rev 版本 Date 日期 Name 姓名 Modifications 修改内容 Page 页码 023 02 2007Merfort First issue Completed upon operation experience in Zhenglan I 首版 根据正蓝电站一期操作经验 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf9 of 77 1Description of the Air Cooled Condenser design 设计说明 The air cooled condenser system ACC is composed of eight streets with a total of 640 heat exchanger bundles and 64 fans with one fan supplying air to 10 bundles The ACC consists of 480 bundles operated as condensers and 160 bundles operated as dephlegmators 该项目 ACC 系统由 8 列总共 640 片换热管束和 64 台风机组成 每台风机向 10 片管束供风 管束 提供换热表面积 此系统构成中 其中 480 片管束为冷凝器 其余 160 片为分凝器 The steam from the steam turbine enters the ACC via the main steam duct and is distributed by the steam distribution header to the condenser bundles 来自汽轮机的蒸汽经由主蒸汽管道进入 ACC 并由蒸汽分配管箱进入冷凝器管束 The condenser elements consist of numerous finned tubes which are arranged in parallel The steam condenses on the inside surface whilst the cooling air is conducted in crossflow on the outside 冷凝器组件由平行排列的大量翅片管组成 蒸汽在管内表面冷凝 同时冷却空气横过管外表面 The steam distribution header is located at the top of the roof type bundles and is welded to the bundles which are operated as condensers 蒸汽分配管箱位于屋顶形管束的顶部 并与作为冷凝器的管束焊接在一起 The lower nozzles of the bundles are directly connected with the condensate header which deliver the produced condensate to the condensate drain lines and supply steam to the dephlegmator elements The top end of the dephlegmator bundles are equipped with a header box The air is extracted via nozzles in the header box Air extraction piping connects to the air evacuation system The evacuation system consists of 3 water ring pumps 管束下部的接管直接与凝结水箱连接 联连箱将凝结水送到凝结水疏水管道且将蒸汽送至分凝器管 束 分凝器管束的顶端有一个管箱 空气经管箱上的接管被抽取 抽气管道与抽真空系统相连接 抽真空系统由 3 台水环泵组成 The auxiliary units required such as condensate pumps drain pumps and evacuation system are arranged in the building in front of the ACC 所需要的辅助设施 如凝结水泵 排水泵和抽真空系统设置在 ACC 前面的厂房内 The required cooling air is supplied by the axial fans arranged in the lower part of the roof The 64 fans are driven by two speed motors with power transmission through gear units 所需要的冷却空气由排布在屋顶较低处的轴流风机提供 64 台风机由双速电机驱动 功率传递由变 速箱完成 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf10 of 77 2DCS System For Air Cooled Condenser ACC DCS 系统 The Air Cooled Condenser ACC is equipped by a separated DCS unit 空冷冷凝器 ACC 配有独立的 DCS 控制系统 This DCS system is integrated into the DCS system from the Power Station 该系统与电站的 DCS 系统整合在一起 This separate DCS unit of the ACC includes all necessary controllers and Input Output modules to control and operate the ACC separately from the plant s main DCS 空冷冷凝器独立的 DCS 控制系统包括所有必需的控制器和输入和 I O 模块 并从电站主 DCS 分别 控制和操作 ACC The operator and engineer stations of the DCS unit are located behind the operator room This station will only be used during commissioning and maintenance 该 DCS 的操作员站和工程师站位于操作室的后面 该站仅用于调试和维护过程中 The ACC will be controlled by the separated DCS unit ACC 系统由独立的 DCS 单元操控 Following systems will be controlled by the separate DCS of the ACC 下列系统由 ACC 系统中独立的 DCS 控制 ACC start up shut down sequence ACC 系统的启停顺序 Control of all 64 fans two speed motors of the ACC ACC 的 64 台风机 双速电机 的控制 Control of the actuators at main risers condensate and air extraction lines 主立管 冷凝管线和空气抽空管线的执行器控制 Control of the evacuation system detail design by Client 抽真空系统的控制 客户提供详图设计 Display and trend curves from field measurements 现场测量值的显示和趋势曲线 Following systems will not be controlled by the separate DCS of the ACC 下列系统不被 ACS 控制 Power supply system for ACC ACC 电源系统 Control of Condensate pumps and the condensate system 冷凝泵和冷凝系统的控制 Level control at turbine exhaust box 汽轮机排汽罐的液位控制 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf11 of 77 2 1 Interface Exchange Between ACC DCS and Power Station DCS ACC DCS 与电站 DCS 系统之间的信号交换接口 Interface Power Plant DCS ACC DCS 电厂与 ACC 界面 Power Plant DCS 电厂 DCS Initiation ACC Start 初始化 ACC 启动 Initiation ACC Shut Down 初始化 ACC 停 止 Evacuation System 真空系统 Waterringpumps No 1 3 in operation 水环泵 编号 1 3 运行 Steam Turbine Bypass Value 蒸汽轮机旁路阀 Comands OPEN and CLOSE 指令 开关及关闭 Feedback open and close position 反馈 开关及关闭 位置 Fault Signals 故障信号 Gearbox heating No 1 64 变速器加热 编号 1 64 行 介面 Air Cooled Condenser DCS 空冷凝汽器 DCS ACC Measurements ACC 测量 Temperature Pressure Vibration 温度 压力 驱动 Status of individual motor drives 电机驱动状态 Fan motor drives No 1 64 风机电机驱动 编号 1 64 Status of individual value drives 单个阀门驱动状态 Steam riser values No 1 7 蒸汽立管阀 编号 1 7 行 Condensate values No 1 7 冷凝阀 编号 1 7 行 Air extraction value No 1 7 抽空阀 编号 1 7 行 Signal Pre evacuation finished 信号 预真空完成 Freezing Protection I II 防冻保护 I II SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf12 of 77 2 2 DCS Operation Modes DCS 运行模式 The separated DCS of the ACC is operated in AUTO and MANUAL mode ACC 独立 DCS 系统可按自动或手动方式运行 The following ACC equipment 下列 ACC 系统设备 Fan motor drives 风机电机驱动 Steam riser valves 蒸汽立管阀门 Condensate valves 冷凝阀 Air extraction valves 抽真空阀 can also be switched from the Motor Control Center MCC 可以从电机控制中心 MCC 操作 Here are different modes of operation 下面叙述不同的运行模式 DCS Auto Mode DCS 自动模式 The automatic Start up and Shut down program can only be carried out in auto mode 自动起机和停机程序只能在自动方式下进行 The Air Cooled Condenser and its associated equipment shall be kept in this operation mode ACC 及其辅助设备都应该保持这种模式 The Auto Mode contains the following programs and interlocks 自动模式包含以下程序和互锁 Start up Shut down sequence 系统起机和停机顺序 All protective loops activated 所有已经启动的保护回路 Re starting rectification possible 可能的重启动或调整 DCS Manual Mode Remote Manual Mode SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf13 of 77 DCS 手动模式 远程手动模式 Manual operation means that the individual equipment of the ACC can manually be governed from the Power Plant DCS by the operator 手动操作就是允许操作人员在电站 DCS 系统上手动调节 ACC 各个设备 This manual operation is actually a remote manual operation 这种手动方式实际上就是远方手动操作 The protection loops e g freezing protection will automatically be activated in this operation mode but in case the protection signal disappeared generally the relevant equipment device will not automatically be restarted in this operation mode 各种保护回路 例如防冻保护 可在该方式下自动启动 但是如果保护信号消失 相关设备和设施 不会自启动 MCC Manual Mode MCC 手动模式 It is also possible to operate manually the motor and actuator drives from the MCC in local position 可以从 MCC 本地手动操作各种电机和执行组件 The local mode at the MCC shall be displayed on the DCS screen providing information for the operators and take certain measures for the interest of the safe ACC operation MCC 的就地方式能够在 DCS 屏幕上显示出来 向操作员提供各种信息 以便他们采取必要的安全 措施来保护 ACC 系统 MCC Manual operation mode especially for the fans shall be avoided 最好不要采用 MCC 的手动操作方式 特别是对于风机的手动方式 DCS Auto DCS Manual Mode DCS 自动 DCS 手动模式 In case Auto will be changed to Manual mode after the ACC start up the last step of the fan motor speed remains unchanged but the fan status can of course be changed by manual way with action carried on in the Control Room Operation system screen 如果在 ACC 系统起机后从自动切换为手动方式 风机电机转速保持不变 但风机状态会随着主控 室操作而变化 并且显示在主控显示屏上 The protection loops are still activated in Manual Mode too 各种保护回路在手动方式下仍然有效 3Description of Process Mode of Operation 流程 运行模式说明 The steam to be condensed flows from the turbine through the main steam duct to the condenser system From there it is supplied by the steam distribution header to the condenser bundles where it is partly condensed 需冷凝的蒸汽从汽轮机通过主蒸汽管道流入冷凝器系统 再由蒸汽分配管箱流入冷凝器管束 在这 里蒸汽被部分冷凝 In the tubes arranged as condenser the condensate flows in the direction of the steam 在冷凝器管内 凝结水的流动方向与蒸汽相同 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf14 of 77 The portion of the steam not yet condensed passes via the condensate header through the lower header box into the dephlegmator bundles and is condensed there 未冷凝的那部分蒸汽通过冷凝器下部的凝结水连箱进入分凝器管束 并在这里被凝结 In the tubes arranged as dephlegmator the condensate flows in opposite direction to the steam 在分凝器管内 凝结水的流动方向与蒸汽相反 The air extraction will be done by 3 water ring pumps During the start up evacuation period all 3 pumps are necessary only 1 water ring pump is needed to maintain the vacuum in normal operation mode 抽空由 3 台水环泵完成 在启动抽真空系统后 3 台泵均需投入运行 在正常操作情况下 只需一台泵运行可维持真空 The non condensable gases are drawn off in the upper section of the dephlegmator bundles they are compressed in the evacuation system and discharged into the atmosphere 不凝气在分凝器管束的上部被抽出 不凝气在抽真空系统中被压缩并排入大气 The produced condensate flows by gravity through the condensate drain line into the Turbine Exhaust Box TEB Hotwell 产生的凝结水受重力作用通过凝结水疏水管道流入主凝结水罐 主凝结水罐 热井 The cold air required for condensation is taken in from the ambient air by the axial flow fans and is supplied to the cooling surfaces of the fin tube bundles 冷凝所需的冷空气由轴流风机获取并吹向翅片管束的冷却表面 The cooling air flow rate can be altered by switching of two speed motors 冷却空气流量由双速电机的速度转换开关来调节 4Function 功能 4 1 General Description 概述 The steam coming from the turbine or the bypass station flows through the main steam duct to the air cooled condenser and is condensed there The condensate is discharged through the condensate drain line 来自汽轮机或旁路站的蒸汽通过主蒸汽管道流入冷凝器并在那里被冷凝 凝结水由凝结水管道排 出 The evacuation system produces the vacuum required for starting up the system and removes the non condensable gases during operation of the system 抽真空系统提供启动系统所需要的真空 并在系统操作期间排出不凝气 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf15 of 77 5Control Function and Purpose of ACC Control System ACC 控制系统的控制功能和目的 5 1 Purpose of ACC Control System ACC 控制系统的目的 a Providing automatic start up 完成自动起机 Providing automatic shut down 完成自动停机 Providing the safe steady state operation 提供安全稳定操作 Control of the turbine exhaust steam pressure MAG10 CP901 to the adjustable 通过双速风机驱动电机以及蒸汽立管阀 控制 MAG10 CP901 汽轮机排汽压力在可调设置 点 Ps setpoint Ps by two speed fan motor drives as well as with the steam riser valves Ps 汽轮机和旁路站 最小负载 40 10 20 Kpa 绝压 绝压 b Freezing protection of ACC by monitoring ACC 防冻保护监测 Ambient air temperatures 环境空气温度 MAG10 CT101 MAG10 CT102 MAG10 CT103 for control functions the 2 of 3 measurement is used MAG10 CT901 3 选 2 测量的控制功能使用 MAG10 CT901 Air extraction temperatures Condensate temperatures 抽真空温度 冷凝温度 MAJ02 04 CT101LCA10 11 15 16 CT101 MAJ12 14 CT101LCA20 21 25 26 CT101 MAJ22 24 CT101LCA30 31 35 36 CT101 MAJ32 34 CT101LCA40 41 45 46 CT101 MAJ42 44 CT101LCA40 41 45 46 CT102 MAJ52 54 CT101LCA40 41 45 46 CT103 MAJ62 64 CT101LCA50 51 55 56 CT101 MAJ72 74 CT101LCA60 61 65 66 CT101 LCA70 71 75 76 CT101 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c3474803e8900 pdf16 of 77 LCA80 81 85 86 CT101 with automatic control of individual fans disconnection when temperatures are too low in connection with low ambient air temperature 当环境空气温度太低时 系统会自动控制各台风机的关停 c Switch on off of watering pumps for evacuation 抽水泵的开启和关闭 At ACC start up sequence 用于 ACC 起机顺序 At ACC shut down sequence 用于 ACC 停机顺序 Change over from operating waterring pump to stand by vacuum pumps in case of malfunction 一旦故障产生 可将操作水环真空泵转换到备用真空泵 SPX Cooling Technologies GmbH SPX 冷却技术公司 Zhenglan Power Plant 2 x 600 MW Air Cooled Condenser 正蓝电厂 2 x 600 MW 空冷凝汽器 Z FileRoot FileRoot 1 20150316 2020 1 11 0c78ed11 a9ba 4922 a989 30198731aa79 62bba6a18bd51d8b9b1c34