CAJ | 학술논문

对于台山项目EPR汽轮机低压内、外缸相对初始安装位置，供应商给出了2种不同方案。1种方案是LP1/LP2/LP3低压外缸中心线相对于各自对应的低压内缸中心线分别往发电机侧偏移+6.00 mm、+3.00 mm、+0.00 mm；另1种方案是3个低压内、外缸中心线分别重合。文章根据当地实际环境温度，采用分段法计算了低压内缸在正常运行状态下的热膨胀量。通过分析低压内、外缸采用各种相对初始安装位置后O型柔性密封环在正常运行时的轴向热膨胀补偿量，提出了比现有方案更佳的改进建议方案，可为后续项目提供一些参考。
대우태산항목EPR기륜궤저압내、외항상대초시안장위치，공응상급출료2충불동방안。1충방안시LP1/LP2/LP3저압외항중심선상대우각자대응적저압내항중심선분별왕발전궤측편이+6.00 mm、+3.00 mm、+0.00 mm；령1충방안시3개저압내、외항중심선분별중합。문장근거당지실제배경온도，채용분단법계산료저압내항재정상운행상태하적열팽창량。통과분석저압내、외항채용각충상대초시안장위치후O형유성밀봉배재정상운행시적축향열팽창보상량，제출료비현유방안경가적개진건의방안，가위후속항목제공일사삼고。
The supplier has given two schemes for the relative assembly position between LP inner and outer casings of Taishan EPR turbine. One is the center line of LP1/LP2/LP3 outer casings moving by+6.00 mm,+3.00 mm,+0.00 mm respectively towards gener-ator from the center line of corresponding LP inner casings, the other one is the center lines of three LP outer casings coinciding with the center line of corresponding LP inner casings. The thermal expansion value of LP inner casing has been calculated by frac-tionation method based on the Taishan local environment temperature. Through assuming different relative assembly position, the axial thermal expansion compensation by O type flexible sealing ring between LP inner and outer casings in normal operation is an-alyzed. A better scheme is concluded which will be useful for following projects.