大型天然气联合循环电厂机组的轴系配置

Shaft system configuration of large scale natural gas-fired combined cycle generating unit

为迎接西气东输和LNG(液化天然气)的输入,我国东部地区正在建设一批大型联合循环电厂。为使建成后的电厂单位投资省、热效率高、占地少、投产后具有较好的效益,选择合适的机组轴系配置至关重要。文中对我国急需建设的大型天然气联合循环电厂机组的轴系配置进行充分的分析和比较,并推荐出最合理的轴系配置方式。

In East and South China coastal regions, a batch of large scale gas-fired combined cycle generating units will be built as animportant supporting power source with the natural gas of 'transporting gas from West to East' and the imported liquefied natural gas (LNG)as fuel. A good shaft system configuration of combined cycle generating unit means less capital cost, higher heat efficiency, fewer occupiedland and more economic benefit after commissioned, This paper makes the full analysis and comparison of shaft system configuration for thelarge scale natural gas-fired combined cycle units to be built soon and suggests the most appropriate shaft system configuration.