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首页> 外文期刊>Thermal engineering >Operational Diagnostics of Thermal State and Efficiency of Steam Turbines of TPP and NPP
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Operational Diagnostics of Thermal State and Efficiency of Steam Turbines of TPP and NPP

机译：TPP和NPP汽轮机热力状态和效率的运行诊断。

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摘要

Various ways for solving complex problems of the strength and operating life of steam turbines of TPP and NPP are studied. Diagnostic characters and technical possibilities for their control during the steam turbine operation are determined. It is shown that the effect of various factors on the reliability, maneuverability, and service life of power installations of TPP and NPP is generally determined by the thermal state of steam-electric generating sets. Leading foreign and domestic manufacturers give major attention to the organization of the control of the thermal state of facilities and the development of systems for accounting ('counter') the service life depletion. Zones of high-temperature sites of shafts and disks with maximum parameters of operating environment are determined. A model for on-line computation of thermal stresses with the diagnostic evaluation of the service life depletion (fatigue accumulation) and forecasting of optimum heating conditions for thermostressed turbine units is briefly stated. An example of a program for diagnostics of the quality of the facility operation is given. The program provides the operative control of thermal stresses and the service life depletion in main units of the turbine under various operation conditions, operates in the real-time mode, calculates and represents currents values of thermal stresses in turbine units, and forms and transmits into the industrial control signals on the occurrence of restrictions with respect to thermal stresses and prohibition of an increase or decrease in the vapor temperature and the load in the case of approaching pressures to maximum permissible ones. In the case of stationary operation conditions, the program computed the current efficiency in high (HPC) and mean (MPC) pressure cylinders.
机译：研究了各种解决TPP和NPP汽轮机强度和使用寿命问题的方法。确定了在汽轮机运行期间的诊断特征及其控制的技术可能性。结果表明，各种因素对TPP和NPP动力装置的可靠性，可操纵性和使用寿命的影响通常取决于蒸汽发电机组的热状态。国内外领先的制造商都非常重视对设备的热状态进行控制的组织以及对使用寿命（“计数器”）进行计费的系统的开发。确定具有最大工作环境参数的轴和盘的高温部位区域。简要介绍了一种在线计算热应力的模型，该模型具有对使用寿命耗尽（疲劳累积）的诊断评估以及对热应力涡轮机单元的最佳加热条件的预测。给出了一个用于诊断设备运行质量的程序示例。该程序可在各种运行条件下对涡轮机主要单元的热应力和使用寿命耗竭进行操作控制，以实时模式运行，计算并表示涡轮机单元中的热应力电流值，并形成并传输至当压力接近最大允许压力时，工业控制系统会发出有关热应力的限制信号，并禁止蒸气温度和负载的升高或降低。在静止工况下，程序会计算高压（HPC）和平均（MPC）压力缸中的电流效率。

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  • 来源
    《Thermal engineering》 |2016年第5期|349-354|共6页
  • 作者

    V. V. Bozhko; A. N. Kovalenko; V. M. Lyapunov; L. A. Khomenok;

  • 作者单位

    Polzunov Scientific and Development Association on Research and Design of Power Equipment (NPO TsKTI),ul. Atamanskaya 3/6, St. Petersburg, 191167 Russia;

    Polzunov Scientific and Development Association on Research and Design of Power Equipment (NPO TsKTI),ul. Atamanskaya 3/6, St. Petersburg, 191167 Russia;

    Polzunov Scientific and Development Association on Research and Design of Power Equipment (NPO TsKTI),ul. Atamanskaya 3/6, St. Petersburg, 191167 Russia;

    Polzunov Scientific and Development Association on Research and Design of Power Equipment (NPO TsKTI),ul. Atamanskaya 3/6, St. Petersburg, 191167 Russia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    diagnostics; steam turbines; operation conditions; thermal stresses; creep; temperature fields; efficiency; service life; damageability;

    机译：诊断;汽轮机;操作条件;热应力;蠕变;温度场效率;服役生涯;损坏性;

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