INFLUENCE OF SIMPLIFYING SHAFT-SEAL GROOVES UPON THERMAL STRESS CALCULATION RESULT OF STEAM TURBINE'S ROTOR

doi:10.19666/j.rlfd.2006.05.004

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INFLUENCE OF SIMPLIFYING SHAFT-SEAL GROOVES UPON THERMAL STRESS CALCULATION RESULT OF STEAM TURBINE'S ROTOR

更新时间：2025-09-28

- INFLUENCE OF SIMPLIFYING SHAFT-SEAL GROOVES UPON THERMAL STRESS CALCULATION RESULT OF STEAM TURBINE'S ROTOR
- Thermal Power Generation Issue 5, Pages: 11-15(2006)
- 作者机构：
  
  浙江大学
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2006.05.004
  CLC： TK263.6
- Published：2006
- 稿件说明：
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INFLUENCE OF SIMPLIFYING SHAFT-SEAL GROOVES UPON THERMAL STRESS CALCULATION RESULT OF STEAM TURBINE'S ROTOR[J]. Thermal power generation, 2006, (5): 11-15.
DOI：

INFLUENCE OF SIMPLIFYING SHAFT-SEAL GROOVES UPON THERMAL STRESS CALCULATION RESULT OF STEAM TURBINE'S ROTOR[J]. Thermal power generation, 2006, (5): 11-15. DOI： 10.19666/j.rlfd.2006.05.004.

摘要

利用ANSYS有限元分析软件对135 MW机组汽轮机有无中心孔的转子进行冷态起动条件下热结构耦合计算

得出在相同边界条件和初始条件下存在轴封槽及其简化为光轴时的应力和应变。选取调节级和中压第1级的相应特征点

对轴封槽简化前后计算结果进行对比分析

表明轴封槽模型适合于精确计算

而简化为光轴模型的计算结果偏于安全。结果为确定汽轮机转子危险截面的计算提供了参考。

Abstract

Using ANSYSinfinite element analysis software

the thermal structural coupled calculation for rotor

with or without a central bore

of a 135 MW steam turbine unit under coldstate startingup condition has been carried out

the stress and strain in case of existed shaftseal grooves as well as in case of simplifying them into smooth shaft under same boundary condition and initial condition having obtained respectively.Selecting corresponding characteristic points of the governing stage and the first stage of medium pressure

the calculation results before and after simplifying the shaftseal grooves have been compared and analysed.It shows that the model of shaftseal grooves to be suitable for accurate calculation

while the calculated result of simplified smooth shaft model to be somewhat safer.These results provide reference for calculating the risky section of rotor for steam turbines.

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