蒸汽引射器引射汽轮机排汽供热的研究与应用
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摘要
为了缓解电厂出现的供热不足问题和减少冷端损失,提出了通过蒸汽引射器引射汽轮机乏汽用于供热的方法,并对蒸汽引射器引射汽轮机排汽的工作原理进行了分析介绍。以某330 MW的机组为例,对其利用蒸汽引射器引射汽轮机排汽进行了热力和经济性分析。结果表明:增设蒸汽引射器后,在一个供暖周期内可以为电厂增加供热量367.62 GJ/h,有很大的节能潜力。
In order to alleviate the problem of insufficient heating in power plants and reduce the loss of cold end, a method of igniting steam turbine exhaust steam for heating by steam ejector is proposed, and the working principle of steam ejector ejecting steam turbine exhaust is carried out. analysis and introduction. Taking a 330 MW unit as an example, the thermal and economic analysis of the steam exhaust of the steam turbine by steam ejector is carried out. The results show that the addition of steam ejector can increase the heat supply of 367.62 GJ/h for the power plant in a heating cycle, which has great energy saving potential.
In order to alleviate the problem of insufficient heating in power plants and reduce the loss of cold end, a method of igniting steam turbine exhaust steam for heating by steam ejector is proposed, and the working principle of steam ejector ejecting steam turbine exhaust is carried out. analysis and introduction. Taking a 330 MW unit as an example, the thermal and economic analysis of the steam exhaust of the steam turbine by steam ejector is carried out. The results show that the addition of steam ejector can increase the heat supply of 367.62 GJ/h for the power plant in a heating cycle, which has great energy saving potential.
引文
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[2]孙天宇,任建兴,张健,等.水源热泵回收电厂循环水余热的经济性分析[J].热力发电,2015,44(7):7-11.
[3]毛文龙.汽轮机中间抽汽引射乏汽用于供热的热力系统性能研究[D].山东:山东大学,2016.
[4]阎尔平,张晓弟.蒸汽节流减压损失和回收的研究[J].暖通空调,1994(6):16-19.
[5]索科洛夫.喷射器[M].黄秋云译.北京:科学出版社,1977.
[6]陆宏巧.射流累技术的理论及应用[M].北京:水利电力出版社,1998.
[7]夏远景.蒸汽喷射式热泉及喷射器的性能研究与结构[D].大连:大连理工大学,1998.
[8]高淼.蒸汽喷射器理论及数值模拟分析[D].沈阳:东北大学,2013.
[9]徐国鹏,王晓放.凝汽式汽轮发电机组冬季低真空运行余热供暖的节能分析[J].节能,2001(9):6-8.
[10]于洪志,徐霞.低真空供热系统的热力学分析[J].煤气与热力,1988(6):56-62.
[11]曹丽华,李勇,栾忠兴.中小型汽轮机低真空供热的安全性分析[J].汽轮机技术,2004,46(5):330-332.