發(fā)布時(shí)間：2019-05-09 08:26

【摘要】：機(jī)械密封是流體機(jī)械設(shè)備中的關(guān)鍵部件。隨著石化大型設(shè)備的不斷涌現(xiàn),其設(shè)備的參數(shù)不斷提高,機(jī)械密封所面臨的應(yīng)用工況也越來越苛刻。尤其重載條件下的高壓機(jī)械密封經(jīng)常出現(xiàn)局部過熱、磨損過大、壽命過短等現(xiàn)象,這樣就很難滿足于石油化工過程中的連續(xù)運(yùn)轉(zhuǎn)要求,因此需要一套科學(xué)系統(tǒng)的理論分析工具。本文基于有限元理論方法,綜合國內(nèi)外相關(guān)研究成果,建立力—熱載荷耦合分析模型,對機(jī)械密封進(jìn)行理論分析闡述。 以工程應(yīng)用的加氫進(jìn)料泵機(jī)械密封為切入點(diǎn),以案例分析的方式,分析了機(jī)械密封在各場中的變形,研究了摩擦副端面的變形協(xié)調(diào)技術(shù)。并且將其應(yīng)用于加氫進(jìn)料泵機(jī)械密封研究分析上,對其結(jié)構(gòu)做了優(yōu)化調(diào)整,從而解決實(shí)際工況問題。 在第二章中對機(jī)械密封的結(jié)構(gòu)進(jìn)行了講解,對基本理論進(jìn)行了闡述和機(jī)械密封相關(guān)的參數(shù)研究都做了基本的描述；在第三章中對機(jī)械密封的靜態(tài)力載荷結(jié)構(gòu)分析,通過對機(jī)械密封整體分析,獲得摩擦副在力載荷下的一些變形原則,密封端面在受壓力時(shí)的變形時(shí),形成發(fā)散的錐度。進(jìn)而分析其影響因素,掌握調(diào)整方法,從而進(jìn)行調(diào)整,降低其變形量及應(yīng)力；第四章是對機(jī)械密封進(jìn)行了熱載荷分析,同樣進(jìn)行了獲得了摩擦副在溫度載荷影響下的變形原則,為后續(xù)做耦合分析提供給了理論依據(jù)；在力載荷—熱載荷耦合分析時(shí),將機(jī)械密封作為整體進(jìn)行直接耦合,獲得其最終變形原則；第五章是對機(jī)械密封摩擦端面的受力進(jìn)行了闡述,這樣就較全面的完成了機(jī)械密封的摩擦副分析；通過將密封端面間隙分類進(jìn)行判斷其適用性,再根據(jù)變形協(xié)調(diào)技術(shù)進(jìn)行優(yōu)化調(diào)整,獲得極佳的機(jī)械密封摩擦副結(jié)構(gòu)。 在考慮整套機(jī)械密封裝置的過程中,不僅僅要考慮摩擦副的性能,本文進(jìn)一步考慮了其余相關(guān)金屬部件的影響因素。對相關(guān)金屬部件應(yīng)用有限元的方法進(jìn)行分析計(jì)算,獲得應(yīng)變與應(yīng)力的數(shù)據(jù),進(jìn)而應(yīng)用相關(guān)原則進(jìn)行判定。從材料的角度闡述了如何進(jìn)行調(diào)整優(yōu)化,用以滿足機(jī)械密封整體性能要求。 本文從機(jī)械密封裝置的整體出發(fā),不僅僅考慮摩擦副,還對其它影響因素進(jìn)行考慮,不孤立任何一個(gè)影響因素,由于機(jī)械密封在正常工況下運(yùn)轉(zhuǎn)時(shí),表征了一個(gè)系統(tǒng)的運(yùn)行狀態(tài)。本文研究的結(jié)果為機(jī)械密封的裝置設(shè)計(jì)、制造、使用和維修提供理論依據(jù)。
[Abstract]:Mechanical seal is the key component of fluid machinery equipment. With the continuous emergence of large petrochemical equipment, the parameters of its equipment continue to improve, and the application conditions of mechanical seal are becoming more and more stringent. In particular, high pressure mechanical seals under heavy load conditions often appear some phenomena such as local overheating, excessive wear, and too short life, so it is difficult to meet the requirements of continuous operation in petrochemical process. Therefore, a set of scientific and systematic theoretical analysis tools are needed. In this paper, based on the finite element method and the related research results at home and abroad, the coupling analysis model of force-thermal load is established, and the mechanical seal is analyzed and expounded in theory. Based on the mechanical seal of hydrogen feed pump used in engineering, the deformation of mechanical seal in each field is analyzed in the way of case analysis, and the deformation coordination technology of friction pair face is studied. It is applied to the research and analysis of mechanical seal of hydrogenation feed pump, and its structure is optimized to solve the problem of actual working condition. In the second chapter, the structure of the mechanical seal is explained, and the basic theory and the research on the parameters of the mechanical seal are described. In the third chapter, the static force load structure of mechanical seal is analyzed. By analyzing the whole mechanical seal, some deformation principles of friction pair under the force load are obtained. When the seal face is deformed under pressure, the divergent taper is formed. Then the influencing factors are analyzed and the adjustment methods are mastered so as to adjust and reduce the deformation and stress. In the fourth chapter, the thermal load analysis of mechanical seal is carried out, and the deformation principle of friction pair under the influence of temperature load is obtained, which provides the theoretical basis for the subsequent coupling analysis. In the coupling analysis of force load and thermal load, the mechanical seal is directly coupled as a whole, and its final deformation principle is obtained. The fifth chapter is to explain the force on the friction end face of the mechanical seal, so as to complete the analysis of the friction pair of the mechanical seal in an all-round way. Based on the classification of seal face clearance and the optimal adjustment according to deformation coordination technology, the excellent structure of mechanical seal friction pair is obtained. In the process of considering the whole mechanical sealing device, not only the performance of friction pairs should be considered, but also the influence factors of other related metal parts are further considered in this paper. The finite element method is used to analyze and calculate the related metal parts, and the data of strain and stress are obtained, and then the relevant principles are applied to judge the related metal parts. From the point of view of material, this paper expounds how to adjust and optimize to meet the overall performance requirements of mechanical seal. In this paper, starting from the whole of the mechanical seal device, not only considering friction pairs, but also other influencing factors, not isolated any of the influencing factors, because the mechanical seal is operating under normal operating conditions, The operating state of a system is characterized. The results of this paper provide a theoretical basis for the design, manufacture, use and maintenance of mechanical seal devices.
【學(xué)位授予單位】：大連工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH136

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 關(guān)雅賢,吳大鳴;釜用高壓機(jī)械密封變形分析——用有限元法計(jì)算溫度場、溫差應(yīng)力、機(jī)械應(yīng)力所引起的變形[J];北京化工學(xué)院學(xué)報(bào);1984年01期

2 宋亞東,孫曉光,周慶華;機(jī)械密封環(huán)溫度場的研究[J];國外油田工程;1994年06期

3 王勝軍,郝木明,張書貴;機(jī)械密封溫度場計(jì)算[J];化工機(jī)械;2004年04期

4 丁雪興;陳德林;張偉政;杜兆年;;機(jī)械密封環(huán)熱應(yīng)力的有限元計(jì)算及分析[J];化工機(jī)械;2007年01期

5 彭旭東,謝友柏,顧永泉;機(jī)械密封端面溫度的確定[J];化工機(jī)械;1996年06期

6 顧永泉;平行面機(jī)械密封結(jié)構(gòu)和性能的研究[J];化工機(jī)械;1997年01期

7 顧伯勤,蔣小文,孫見君,陳曄;機(jī)械密封技術(shù)最新進(jìn)展[J];化工進(jìn)展;2003年11期

8 洪先志,董宗玉,顧永泉;機(jī)械密封端面力變形的解析計(jì)算[J];化工設(shè)計(jì);2002年02期

9 黨建軍,秋衛(wèi)平,錢志博;有限元法在機(jī)械密封設(shè)計(jì)中的應(yīng)用研究[J];航空計(jì)算技術(shù);2000年01期

10 張曉東;龍靜;郭志鳴;;基于ANSYS的機(jī)械密封環(huán)摩擦磨損模擬[J];機(jī)械設(shè)計(jì)與制造;2008年02期

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