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我国自行设计、制造的设有旁路系统的5万千瓦、12.5万千瓦、20万千瓦、30万千瓦和引进的12万千瓦、20万千瓦、30万千瓦中间再热机组已经相继投入运行。在进一步发展高参数、大容量中间再热机组过程中,如何设计运行可靠、系统简单、使用方便的旁路系统是个十分重要的课题。旁路系统是中间再热机组所具有的特点之一,上述已经投运或正在安装中的机组采用了不同型式的旁路系统,引进的25万千瓦和32万千瓦机组不设置旁路系统。经过多年的实践表明:国产机组的旁路系统还存在着不少问题,
China’s self-designed, manufactured by-pass system with 50,000 kilowatts, 125,000 kilowatts, 200,000 kilowatts, 300,000 kilowatts and the introduction of 120,000 kilowatts, 200,000 kilowatts, 300,000 kilowatts of intermediate reheat units have been put into operation one after another. How to design a bypass system with reliable operation, simple system and convenient operation is a very important issue in the further development of high-parameter, high-capacity intermediate reheat units. The bypass system is one of the features of an intermediate reheat unit. Different types of bypass systems are used in the units already in operation or in installation. The imported 250,000 kW and 320,000 kW units are not provided with a bypass system. After many years of practice shows that: there are many problems with the bypass system of domestic units,