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f型U形管式換熱器管板的力學(xué)行為研究

發(fā)布時(shí)間:2018-04-03 11:15

  本文選題:f型U形管式換熱器 切入點(diǎn):管板 出處:《東北石油大學(xué)》2016年碩士論文


【摘要】:換熱器是各行各業(yè)中都要使用的設(shè)備,而且很多是屬于過程裝備中的特殊設(shè)備,管板更是特殊設(shè)備中的特殊部件,它是各個(gè)部件的綜合連接區(qū)域,故受力情況相當(dāng)復(fù)雜,所以對于特殊部件正確分析其受力狀態(tài),不僅能延長其使用壽命以達(dá)到經(jīng)濟(jì)上的節(jié)省,更能保證換熱器安全運(yùn)行以達(dá)到保證安全;谶@個(gè)前提,論文中重點(diǎn)對f型U形管式換熱器的管板進(jìn)行理論計(jì)算以及應(yīng)用ANSYS軟件進(jìn)行溫度場以及應(yīng)力場的研究。論文研究了f型U形管式換熱器特殊部件管板的力學(xué)行為,首先,在管板理論計(jì)算中重點(diǎn)將本文研究的管板分類,然后按照所屬情況進(jìn)行理論計(jì)算;其次,將設(shè)計(jì)數(shù)據(jù)以及工藝條件轉(zhuǎn)化成模擬模型,然后對模型施加約束;再次,在管板的溫度場分析中,根據(jù)工廠實(shí)際情況建立物理模型,利用ANSYS方法確定f型U形管式換熱器管板的溫度場所用的完備的數(shù)值模型,對模型進(jìn)行符合實(shí)際情況的網(wǎng)格劃分,得到整個(gè)管板的溫度場分布情況;最后,在耦合場分析中,為了能更充分的考慮管板各處的應(yīng)力強(qiáng)度的危險(xiǎn)工況,根據(jù)應(yīng)力的分布情況,在管板上依次取了多條路徑進(jìn)行校核,然后依次對研究路徑分析,并按照強(qiáng)度校核的最終數(shù)據(jù)對結(jié)構(gòu)的強(qiáng)度加以評定。通過對特殊部件管板的力學(xué)狀態(tài)分析,我們能夠知道上下管板連接區(qū)域發(fā)生破壞的可能性最大。
[Abstract]:Heat exchanger is a kind of equipment used in all kinds of industries, and many are special equipment in process equipment, tube-plate is a special part of special equipment, it is the comprehensive connection area of each component, so the force situation is quite complex.Therefore, the correct analysis of the stress state of special components can not only prolong their service life to achieve economic savings, but also ensure the safe operation of heat exchangers to ensure safety.Based on this premise, the theoretical calculation of the tube-plate of F-type U-tube heat exchanger and the research of temperature field and stress field with ANSYS software are emphasized in this paper.In this paper, the mechanical behavior of tube-plate, a special part of F-type U-tube heat exchanger, is studied. Firstly, the tube-plate is classified in the theoretical calculation of tube-plate, and then the theoretical calculation is carried out according to the status of the tube-plate.The design data and process conditions are transformed into the simulation model, and then the model is constrained. Thirdly, the physical model is established according to the actual situation of the factory in the analysis of the temperature field of the tube and plate.The ANSYS method is used to determine the complete numerical model for the temperature location of the tube-plate of the F-type U-tube heat exchanger. The model is meshed in accordance with the actual situation, and the temperature field distribution of the whole tube-plate is obtained. Finally, in the coupled field analysis, the temperature distribution of the tube-plate is obtained.In order to fully consider the dangerous working conditions of the stress intensity around the tube plate, according to the distribution of the stress, several paths are selected on the tube plate in turn to be checked, and then the research path is analyzed in turn.The strength of the structure is evaluated according to the final data of the strength check.By analyzing the mechanical state of the tube-plate with special components, we can know that the failure of the upper and lower tube-plate connection region is the most likely.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:TK172

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