本文關(guān)鍵詞： 換熱器 選型 材料 強(qiáng)化傳熱技術(shù) 能效評(píng)定方法 管板 輕量化設(shè)計(jì)　出處：《北京化工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：換熱器是用于實(shí)現(xiàn)冷熱介質(zhì)熱量交換的設(shè)備,它在化工、石油化工、核電、食品等工業(yè)領(lǐng)域均有廣泛應(yīng)用。雖然換熱器具有相應(yīng)設(shè)計(jì)標(biāo)準(zhǔn),但換熱器類型和材料較多,選取合適的類型和材料非常重要。另外,隨著向換熱器大型化的發(fā)展,換熱器的輕量化設(shè)計(jì)越來(lái)越受到重視。本論文就換熱器類型、材料、強(qiáng)化傳熱技術(shù)、能效評(píng)定方法的合理選擇以及管板減薄等方面開展研究,總結(jié)如下：(1)基于知識(shí)工程的理論基礎(chǔ)以及采→存→管→用的開發(fā)思路,確定換熱器類型和強(qiáng)化傳熱技術(shù)合理選擇軟件開發(fā)的技術(shù)路線。通過(guò)查閱文獻(xiàn)、專利、文檔以及詢問(wèn)專家等途徑歸納各種形式換熱器的結(jié)構(gòu)特點(diǎn),并對(duì)常見(jiàn)材料、強(qiáng)化傳熱技術(shù)和能效評(píng)定方法進(jìn)行總結(jié),定義相應(yīng)參數(shù),采用Excel建立數(shù)據(jù)庫(kù)。(2)運(yùn)用Visual Studio編寫換熱器類型、材料、強(qiáng)化傳熱技術(shù)和能效評(píng)定方法的選擇程序,設(shè)計(jì)換熱器類型和強(qiáng)化傳熱技術(shù)合理選擇軟件的界面,完成軟件的開發(fā)。該軟件擁有換熱器類型、材料和強(qiáng)化傳熱技術(shù)的合理選擇以及對(duì)所選換熱器類型進(jìn)行能效評(píng)定等功能,實(shí)現(xiàn)知識(shí)工程在換熱器設(shè)計(jì)中的應(yīng)用。(3)換熱器是特種設(shè)備,常見(jiàn)的設(shè)計(jì)方法有常規(guī)設(shè)計(jì)’和分析設(shè)計(jì)。本論文對(duì)一臺(tái)U形管式換熱器進(jìn)行常規(guī)設(shè)計(jì)和有限元分析,并對(duì)比分析兩種設(shè)計(jì)方法的結(jié)果。(4)對(duì)這臺(tái)U形管式換熱器進(jìn)行輕量化設(shè)計(jì)。應(yīng)用ANSYS建立有限元模型并進(jìn)行強(qiáng)度分析�？偨Y(jié)該換熱器各部位的應(yīng)力變化規(guī)律。確定在滿足強(qiáng)度條件下?lián)Q熱器管板的最小厚度,從而達(dá)到減小設(shè)備重量、降低成本的目的。(5)基于VB和ANSYS設(shè)計(jì)開發(fā)出一套針對(duì)特定結(jié)構(gòu)的換熱器管板的分析計(jì)算軟件。該軟件采用交互式界面,可在后臺(tái)調(diào)用ANSYS自動(dòng)生成分析模型并進(jìn)行分析計(jì)算。從而縮短換熱器強(qiáng)度計(jì)算與輕量化設(shè)計(jì)周期。
[Abstract]:Heat exchangers are widely used in chemical, petrochemical, nuclear, food and other industries, although heat exchangers have corresponding design standards. However, there are many types and materials of heat exchangers, so it is very important to select suitable types and materials. In addition, with the development of large-scale heat exchangers, more and more attention is paid to the lightweight design of heat exchangers. This paper focuses on the types of heat exchangers. Materials, heat transfer enhancement techniques, reasonable selection of energy efficiency assessment methods and thinning of tube-plates are studied. The following is summarized as follows: 1) the theoretical basis of knowledge-based engineering and its adoption. 鈫扴torage. 鈫扵ube. 鈫扷sing the development ideas to determine the type of heat exchanger and enhanced heat transfer technology reasonable choice of the technical route of software development. The documents and experts are used to summarize the structural characteristics of various types of heat exchangers, and the common materials, heat transfer enhancement techniques and energy efficiency evaluation methods are summarized, and the corresponding parameters are defined. Excel is used to establish database. (2) Visual Studio is used to compile the selection program of heat exchanger type, material, heat transfer enhancement technology and energy efficiency evaluation method. The design of heat exchanger type and enhanced heat transfer technology reasonably select the interface of the software and complete the development of the software, which has the type of heat exchanger. The rational selection of materials and enhanced heat transfer technology and the evaluation of the energy efficiency of the selected heat exchangers are the special equipment to realize the application of knowledge engineering in the design of heat exchangers. The common design methods are conventional design and analytical design. In this paper, the conventional design and finite element analysis of a U-tube heat exchanger are carried out. The results of two design methods are compared and analyzed. The lightweight design of the U-tube heat exchanger is carried out. The finite element model and strength analysis are established by using ANSYS. The stress variation law of each part of the heat exchanger is summarized, and the heat exchanger under the condition of satisfying the strength is determined. The minimum thickness of the tube plate. Therefore, the purpose of reducing equipment weight and cost is achieved. (5) based on VB and ANSYS, a set of analysis and calculation software for heat exchanger tube and plate with specific structure is developed. The software adopts interactive interface. The analysis model can be automatically generated and calculated by calling ANSYS in the background, thus shortening the cycle of heat exchanger strength calculation and lightweight design.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ051.5

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本文編號(hào)：1470406