叶盆积灰对TRT叶片静力学性能的影响分析

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英文篇名：Analysis of the deposition on TRT blade and its influence on static mechanical properties 作者：张利娜 ; 李德信 ; 李锐 ; 杨世强 英文作者：Zhang Lina;Li Dexin;Li Rui;Yang Shiqiang;School of Machinery and Precision Instrument Engineering, Xi'an University of Technology;Shaanxi Electronic Technical College; 关键词：TRT叶片 ; 积灰 ; 有限元分析 ; 静态特性 ; 固有频率 英文关键词：TRT blades;;fouling;;finite element analysis;;static analysis;;natural frequency 中文刊名：YYLX 英文刊名：Chinese Journal of Applied Mechanics 机构：西安理工大学机械与精密仪器工程学院;陕西电子科技职业学院; 出版日期：2018-12-15 出版单位：应用力学学报 年：2018 期：v.35;No.154 基金：国家自然科学基金(51475365);; 陕西教育厅科研项目(12JK0681;2013JK1000) 语种：中文; 页：YYLX201806033 页数：9 CN：06 ISSN：61-1112/O3 分类号：221-227+257-258

摘要

高炉煤气余压发电透平(即TRT)是利用高炉煤气所具有的热能及压力能进行发电的一种机械装置。叶片是TRT装置中能量转化的核心部件,工作过程中在其表面形成的积灰对叶片的力学性能会产生严重的影响。对此本文建立了积灰后叶片的几何模型和有限元分析模型,计算了在同等工况下不同积灰厚度叶片的静态应力和应变,并与未积灰状态的叶片的应力和应变进行了对比分析,获得了积灰状态下叶片的应力、应变分布规律。对积灰后的叶片进行了模态分析,得出积灰厚度与叶片固有频率之间的关系曲线。分析结果对实际生产具有指导意义。
        Blast Furnace Top Gas Recovery Turbine Unit(ie. TRT) is a mechanical device which uses the heat energy and pressure of the blast furnace gas to generate electricity. The blades are the core components for the energy conversion of the TRT device, the fouling attached to its surface which can affect the mechanical properties of the blades. The mechanical properties of the fouling blades are analyzed. The geometry model of the fouling blade and the finite element analysis model are built according to the installation characteristics and the actual working conditions of the blades. The static properties of different fouling blades is calculated under the sameconstraints and load, which is compared to the static properties of the fouling blades, the influence laws of the fouling for the static properties of the blades are obtained. The model analysis of the no-fouling blades and the fouling blades is worked out, the relationship curve of the natural frequency for the blades changing with the fouling thickness is got, and the blades prone to resonance in which case of fouling is determined. The results have guiding significance for the actual production.

引文

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