【作者】 黄东煜；

【导师】 郑洪涛；

【作者基本信息】 哈尔滨工程大学 ， 轮机工程， 2006， 硕士

【摘要】 燃气轮机化学回热循环是一种新型先进循环方式，而蒸汽发生器是保证化学回热循环能够实现的重要部件。本文针对化学回热循环工作特点，开展蒸汽发生器的设计与性能仿真研究工作。 论文详细叙述了蒸汽发生器的系统组成及各部件作用原理。根据所选燃烧室工作参数及化学回热器工艺要求，进行蒸汽量计算；根据热力计算结果确定蒸汽发生器各节点热力学参数；按照管壳式换热器设计方法，计算得到补给水预热器、饱和器的总传热系数、传热面积、管长、管程、壳程等换热器特征值；按压力容器设计方法进行了闪蒸室设计计算。 论文另一项工作是蒸汽发生器的性能仿真研究。对于管壳式换热器，论文从传热方程出发建立仿真数学模型，分别应用解析解、整段线性化、分段线性化的简化方法得到动态过程传递函数，并进行详细的仿真计算，得到一些有价值的结论。仿真的终值结果与稳态热平衡计算结果相同，证明论文推导的传递函数能够描述管壳式换热器的动态响应过程。 第一级闪蒸室产生蒸汽的品质是衡量蒸汽发生器系统性能的重要指标。论文通过对蒸汽发生器系统工作过程进行了详细分析，确定工作中可能对蒸汽产量产生重要影响的扰动量。根据热平衡理论建立闪蒸室动态过程的仿真模型，应用整段线性化的简化方法得到闪蒸室产生蒸汽量与补给水流量、饱和器加热量的传递函数。按燃烧室稳定工作情况简化蒸汽发生器边界条件，建立了蒸汽发生器系统仿真结构图，进行系统动态过程的仿真计算。 论文工作结果表明，设计的蒸汽发生器能够满足燃气轮机化学回热循环和排气余热利用要求，同时还可兼顾海水蒸发生产淡水的需要。这种采用两级闪蒸室结构的蒸汽发生器在船舶动力装置的余热利用领域具有非常广阔的应用前景。更多还原

【Abstract】 CRGT is a new advanced cycle for gas turbine. The steam generator is an important component to this cycle. The thesis contraposes with CRGT characteristics, working for steam generator design and peculicrity simulation.The thesis particular recounts composing of steam generator and every parts’ function. Calculate steam flux of chemical recover equipment by combustor parameters and the needs of fule disassemble. Ascertain every point’ s thermodynamic parameters through thermodynamics calculating. Warm-up and heater design like a pipe-shell heat transfer organization. We can get every equipment transfer eigenvalues like longth, transfer area, transfer coefficient and so on. Except these we also design flash recipient as a pressure recipient.Another work of the dissertation is the steam generator peculicrity simulation. To pipe-shell heat transfer organization, the dissertation builds its math simulation model from heat transfer equation. Deduce transfer function by different measure as analytical result, completeness linearization result, part linearization result. Then calculate apply these transfer function. Get some valuable conclusion. The terminal result get from emulator calculate is the same as result by thermodynamic equation. These prove that the transfer function we deduce can describe the trends of pipe-shell heat transfer organization.The quality of steam generated from the first flash recipient is the main guide line for steam generator. The thesis makes sure the eigenvalue to change steam mass through process analyzing. Build math emulator model of flash recipient through thermodynamics equation, get transfer function between steam flux and supply water flux or heat from heater. Make sure boundary conditions by combustor更多还原