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| Research on same height design of boiler and turbine |
| YAO Guo-fu, LI Jian-feng, LI Bin |
| Service Center for Technology and Development, China Electricity Council, Beijing 100055, China |
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Abstract In order to reduce the investment cost and pressure loss during operation of steam pipes of modern large capacity thermal power generating unit,the conception of same height design of boiler and turbine was proposed. It means to ensure the elevation of boiler over heater outlet,inlet and outlet of re-heater,main steam inlet and reheat steam outlet of turbine at the same height as much as possible in the design and constructing process of thermal power generating unit. At undulate region, the boiler may be built in lower elevation and the turbine is installed at higher elevation, so the design can be used to guide power plant site selection. If the power plant is built in plain, the method of boiler sinking construction can be used to shorten the length of steam pipes, the energy consumption of construction excavation will be increased, but the energy consumption of coal transportation will be reduced, it is estimated that the energy balance of construction excavation and coal transportations can be achieved in five years. Boiler sinking construction also brings a number of other advantages,such as reducing power plant noise．
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Published: 15 April 2012
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锅炉与汽轮机等高设计研究
为了降低现代大容量火力发电机组蒸汽管道的投资成本与运行过程中的压力损失,提出了锅炉与汽轮机采用等高布置的设计理念,即在火电机组的设计建设过程中,尽可能保证锅炉的过热器出口、再热器进出口的标高与汽轮机蒸汽出入口的标高相同.采用该种布置方式,在地形起伏较大的地区,可以依地势的高低把锅炉建在低处,而汽轮机则安装在高处,因此该等高设计理念可以用来指导电厂的选址.如果是在平原地带,则可以采用锅炉下沉的布置方式来缩短蒸汽管道长度,尽管增加了土建开挖的能耗,但是却减少了输煤的能耗,估算表明,锅炉运行5 a(年)左右两者的能量即可达到平衡.锅炉下沉的布置方式还带来了其他的一些优点,比如降低电厂噪音等.
关键词：
锅炉,
汽轮机,
等高设计,
压力损失,
蒸汽管道,
投资成本,
超(超)临界
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