发电技术
电力建设
1000MW核电机组首台国产化
半速汽轮机特点及振动控制
王洪栋
（山东电力建设第三工程公司，山东省青岛市266100）
第34卷第9期 2013年9月
摘要：宁德CPR1000型压水堆核电厂1号机组（容量为1000MW)汽轮机是我国首台自行制造的核电半速汽轮机。论述了该型汽轮机的特点：结合这些特点提出从安装角度控制汽轮机振动的措施，包括基础二次埋件及垫铁安装、轴瓦平行度调整、通流间隙调整、高中压缸负荷分配、低压缸与凝汽器连接、基础弹簧释放、轴系找中心、靠背轮铰孔连接等工序的振动控制措施。该机组实际运行情况表明，实施这些措施后效果明显，轴振最大为40.0um，轴瓦报动速度最大为1.42mm/s，2项指标均满足标准要求。
关键调：核电机组半速汽轮机；设备特点；报动控制
EquipmentFeatures and Vibration Control of theFirstDomestic
Half-SpeedTurbinein1oooMWNuclearPowerUnit
WANGHongdong
( Shandong Electric Power Construction No. 3 Engineering Corporation, Qingdao 266100, China)
ABSTRACT: The turbine of No. 1 unit in Ningde CPR1000 PWR nuclear power plant ( the capacity of 1000MW), is thc first domestic half-speed turbine in China. The equipment features of half-speed turbine was analyzed, and some measures were proposed to control the vibration of the turbine from the aspect of installation, including the installation of second grounding embedded parts and sizing block, the parallelism adjustment of bearing bush, the adjustment of flow path clearance, the load distribution of HIP, the connection between LP and condenser, the spring release, the shafting alignment, the wheel diameter ream connection, and other processes. The actual operation of the unit shows that the improvement is obvious after the implementation of these measures, with which the maximum shaft vibration is 40. 0 μm and the maximum vibration speed of bearing bush is 1. 42 mm/s, both of the two indices can meet the standard requirements. KEYWORDS; nuclear power unit; half-speed turbine; equipment features; vibration control
中图分类号：TM623
文献标志码：A
DOI; 10. 3969/j. issn. 1000 7229. 2013. 09. 018 0引言
文章编号：10007229(2013)09009204
汽轮机相比除具有整机体积大、各部件质量大等特点外，在结构上也有较大差异(13)。
福建宁德CPR1000型压水堆核电厂一期工程规划建设4台1000MW核电机组，采用我国首次自主设计，由东方汽轮机有限公司制造，型号为 HN1089-6.43/280/269-H、额定功率
为
1089.075MW、排汽压力为0.0051MPa的单轴、中间再热、三缸四排汽、凝汽式半速（1500r/min）汽轮机1)。本文论述该型汽轮机特点及安装中控制机组
振动的措施，供同类型机组安装借鉴。 1
半速汽轮机特点
国产化核电半速汽轮机与同容量常规火电全速
9
Electric Power Construcrion Vol 34, Na 9, Sep. , 2013
万方数据
1.1汽缸
高、中压缸为整体合缸、单层结构，高压缸内无调速级和独立喷嘴组，高、中压缸均为全周进汽。高压缸内有9级隔板，中压缸内有4级隔板，高、中压缸采用分流式布置。低压缸为内、外双层结构，缸内设置正、反各5级隔板，双流程对置式布置。低压外缸由前、后两半组成焊接式结构，外缸整体采用四周无台板支撑方式，直接座落在凝汽器喉部水平面上，通过连接板与凝汽器采用焊接方式连接。低压内缸下率与其两端的轴承座合为一体构成低压内下缸，由于内缸通过轴承座直接支承在汽机基础的圆垫铁上，不承