杨元龙, 吴金祥, 郑子都, 吴炜, 孙玲. 汽轮给水机组切换工况下船舶蒸汽动力系统的响应特性[J]. 中国舰船研究, 2019, 14(2): 150-155. DOI: 10.19693/j.issn.1673-3185.01248
引用本文: 杨元龙, 吴金祥, 郑子都, 吴炜, 孙玲. 汽轮给水机组切换工况下船舶蒸汽动力系统的响应特性[J]. 中国舰船研究, 2019, 14(2): 150-155. DOI: 10.19693/j.issn.1673-3185.01248
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Yang Yuanlong, Wu Jinxiang, Zheng Zidu, Wu Wei, Sun Ling. Response characteristics of ship steam power system under switchover of turbine feed water pump[J]. Chinese Journal of Ship Research, 2019, 14(2): 150-155. DOI: 10.19693/j.issn.1673-3185.01248
Citation: Yang Yuanlong, Wu Jinxiang, Zheng Zidu, Wu Wei, Sun Ling. Response characteristics of ship steam power system under switchover of turbine feed water pump[J]. Chinese Journal of Ship Research, 2019, 14(2): 150-155. DOI: 10.19693/j.issn.1673-3185.01248
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汽轮给水机组切换工况下船舶蒸汽动力系统的响应特性

Response characteristics of ship steam power system under switchover of turbine feed water pump

    摘要
  • 摘要:
      目的  汽轮给水机组的切换性能是决定船舶蒸汽动力系统运行稳定性的关键技术指标，同时对船舶航行安全性具有重要的意义。
      方法  利用模块化建模系统（MMS）热工系统仿真软件平台，建立基于汽轮给水机组切换原理的船舶蒸汽动力系统仿真模型，并结合实验数据验证仿真模型的精度，分析高、低速工况下汽轮给水机组切换对蒸汽动力系统气水循环的动态响应规律。
      结果  计算结果表明：在高、低速工况下，汽轮给水机组切换均能满足增压锅炉的供水需求，其中低速工况切换后系统能够稳定运行，而高速工况切换后系统却无法稳定运行，具体表现为冷凝器水位快速升至极高值，除氧器水位急剧降至极低值，且废气和微过热蒸汽的压力波动较大。
      结论  研究成果可为汽轮给水机组的切换方案优化提供理论支撑。

     

    Abstract:
      Objectives  The switching performance of turbine feed water pump is a key technical indicator to decide the operation stability of ship steam power system, and it is of great significance to the safety of navigation.
      Methods  Using the Modular Modeling System(MMS) thermal engineering system simulation software, a simulation model of ship steam turbine power system based on the switching principle of turbine feed water pump is established. Meanwhile, the accuracy of the simulation model is verified by experiment data. The dynamic response of turbine feed water pump to steam-water cycle of steam turbine power system is analyzed under high-speed and low-speed conditions.
      Results  The calculation results show that switchover of turbine feed water pump can meet the water supply demand of supercharged boiler under high-speed and low-speed conditions. After switching, the system can run stably under low-speed condition, but the operation of the system is unstable after switching under high-speed condition. It shows that the water level of the condenser rapidly rises to an extremely high level, and the water level of the deaerator drops sharply to an extremely low level. Severe pressure fluctuation occurs in exhaust steam and micro superheated steam.
      Conclusions  The research results can provide theoretical support for the optimization of the switching scheme of the steam turbine feed water pump.

     

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