【摘要】 对电厂汽轮机主要运行参数变化对煤耗影响的分析,在对电厂变工况运行研究的基础上,给出各参数变化与煤耗变化的关系式,确定汽轮机主要运行参数对机组性能的影响程度,为提高机组的热经济性水平提供依据,对实现火电机组节能降耗有重要意义。利用等效焓降法建立计算模型,简单易行地计算出汽轮机主要运行参数变化影响煤耗变化量的值,对之前仅研究主蒸汽参数与煤耗变化量的影响关系做了补充,并以N300-16.65/537/537-I型汽轮机运行数据为例,对模型进行验证。结果表明这种模型具有计算结果比较准确、使用方便、通用性强等优点,适用于工程实际应用。更多还原

【Abstract】 The paper analyzes the influence of main operation parameters change on the coal consumption of the turbine in power plant,and gives the relationship between the parameters change and the coal consumption change to determine the effect of the parameter on unit performance based on the variant operation research.By means of equivalent enthalpy drop method,the paper establishes the model to calculate a change in the coal consumption caused by the parameters change,which is a complement for previous relevant studies.Combined with the operation data from N300-16.65/537/537-I turbine,the effectiveness,generality and accurate calculation result of the proposed model is verified.更多还原