2012年第6期（总第174期）
doi:10.3969/j. issn. 1009 3230.2012.06.002
应用能源技术
汽压损变化对煤耗率影响的
通用强度矩阵计算模型
武国磊，武庆源，沙振，裴广会
（天津国投津能发电有限公司，天津300480）
摘要：抽汽压损是一种不明翌显的热力损失，它使蒸汽的做功能力下降，热经济性降低。加热器构汽压损的变化将影响火电机组的发电煤耗率，因此定量计算分析独汽压损变化对火电机组发电煤耗率的影响对节能降耗具有重要的现实意义。文中提出了一种计算抽汽压损变化对煤耗率响的新方法，该方法以火电机组热经济性分析的统一物理模型和数学模型为基础，建立了基于强度矩阵的抽汽压损变化对煤耗率影响的通用计算模型。本模型不必建立热力系统能量平衡方程与质量平衡方程，且推导简单、计算量小、精度高和通用性强，为研究抽汽压损改变对机组热经济性的影响提供了一种新方法。
关键词：抽汽压损；发电煤耗率；热经济性；强度矩阵
中图分类号：TK284
文献标志码：B
文章编号：1009-3230(2012)06-0005-05
GeneralStrengthMatrixCalculationModelofInfluence ofExtractionSteamPressureLossoftheHeateron
Coal Consumption Rate
WU Guo-lei, WU Qing-yuan, SHA Zhen, PEI Guang-hui
(Tianjin SDIC JinnengElectric PowerCo.，Ltd.，Tianjin300480,China）
Abstract: Extraction Steam Pressure Loss was a kind of not obvious thermodynamic loss, and it made the perfomance ability of steam down thus reduced thermal economy. Extraction Steam Pressure Loss of the heater affected on the coal consumption rate in coal-fired power plants, for the reason, the quantitative analysis of the influence had practical significancefor saving energy,In view of previous deficiencies, a new method was given. A general strength matrix calculation model was established with the gradient operator in this method, which was based on the unified physical model and mathematic model in thermal economy analysis. The model not only had little computational amount but also had high precision, without establishing thermodynamic system equations balance of energy and mass in previous literatures, so it supplied a new method of analyzing the influence of Extraction Steam Pressure Loss of the heater on thermal economy.
Key words:Extraction Steam Pressure Loss; Coal consumption rate; Themal economy; Strength matrix
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引言
抽汽压损是指抽汽在加热器中以及从汽轮机
修订日期：2012-05-10
收稿日期：2012-04-15
作者简介：武国磊（1981－），男，本科，工程师，主要从事汽
轮机及其辅动设备的检修、维护及管理工作。
万方数据
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抽汽口到加热器管道上产生的压力损失之和。抽汽压损是一种不明显的热力损失，使蒸汽的做功能力下降，热经济性降低。根据小扰动可知，加热器抽汽压损变化时，属于小扰动。所以，当加热器