機(jī)械密封相變半徑和溫度的研究
發(fā)布時間：2018-11-24 14:28
【摘要】：機(jī)械密封作為旋轉(zhuǎn)設(shè)備中重要的密封裝置,廣泛應(yīng)用在石油化工、造紙、食品、航空等行業(yè)中。國內(nèi)外的學(xué)者對于機(jī)械密封進(jìn)行了大量的研究,但是對于機(jī)械密封密封端面間被密封介質(zhì)相變的研究大多基于實(shí)驗(yàn)觀察研究,少量的理論計算不僅應(yīng)用范圍較窄,且都基于大量的假設(shè)條件。文本提出熱結(jié)構(gòu)耦合的分析方法可計算機(jī)械密封穩(wěn)定運(yùn)轉(zhuǎn)時的相變半徑,可以廣泛適用于多種類型的機(jī)械密封。 本文在機(jī)械密封密封端面為微凸體接觸的條件下,建立機(jī)械密封有限元模型,結(jié)合理論計算結(jié)果和結(jié)構(gòu)分析結(jié)果編寫APDL語言對模型進(jìn)行熱分析,得到機(jī)械密封的相變半徑。研究了被密封介質(zhì)的壓力、溫度、使用puv值、機(jī)械密封載荷系數(shù)和端面寬度對密封環(huán)溫度場的影響,得到對密封端面間被密封介質(zhì)相變半徑的影響。建立雙端面機(jī)械密封實(shí)驗(yàn)臺,測量靜密封環(huán)不同位置處的溫度,經(jīng)過對比,理論計算結(jié)果與實(shí)驗(yàn)測試結(jié)果有很好的一致性。 本文結(jié)合《AP1682-2004離心泵和轉(zhuǎn)子泵用軸封系統(tǒng)》標(biāo)準(zhǔn)中冷卻輔助裝置方案,分析各種方案的適用條件,利用FLUENT軟件分析不同冷卻方案對機(jī)械密封溫升的影響,并將其結(jié)果與不使用冷卻輔助裝置的機(jī)械密封進(jìn)行對比,在一定程度上給機(jī)械密封選擇冷卻輔助裝置給出參照。 本文通過測量密封環(huán)端面的微凸體分布特性,得到密封環(huán)真實(shí)接觸面積,將使用真實(shí)接觸面積計算得到的相變半徑和溫度結(jié)果和使用名義接觸面積計算得到的結(jié)果與實(shí)驗(yàn)結(jié)果進(jìn)行對比,發(fā)現(xiàn)密封溫度與接觸面積相關(guān)。 以上這些結(jié)果對機(jī)械密封的幾何結(jié)構(gòu)設(shè)計、使用、優(yōu)化提供依據(jù),為以后的研究提供理論基礎(chǔ)。
[Abstract]:As an important sealing device in rotating equipment, mechanical seal is widely used in petrochemical, papermaking, food, aviation and other industries. Scholars at home and abroad have done a lot of research on mechanical seal, but most of the research on phase change of sealing medium between the end surfaces of mechanical seal is based on experimental observation, a small amount of theoretical calculation not only has a narrow scope of application. And based on a large number of assumptions. In this paper, the thermal structural coupling analysis method can be used to calculate the phase change radius of mechanical seals in stable operation, which can be widely used in various types of mechanical seals. In this paper, the finite element model of mechanical seal is established under the condition that the end face of mechanical seal is microconvex. The thermal analysis of the model is compiled by APDL language combined with the theoretical calculation results and structural analysis results, and the phase change radius of mechanical seal is obtained. The effects of pressure, temperature, puv value, mechanical seal load coefficient and end face width on the temperature field of the seal ring are studied. The effect on the phase change radius of the sealed medium between the seal faces is obtained. A double end mechanical seal test bench was set up to measure the temperature of the static seal ring at different locations. By comparison, the theoretical calculation results are in good agreement with the experimental results. Combined with the cooling auxiliary device scheme of AP1682-2004 centrifugal pump and rotor pump standard, this paper analyzes the applicable conditions of various schemes, and analyzes the effect of different cooling schemes on the temperature rise of mechanical seal by using FLUENT software. The result is compared with the mechanical seal without cooling auxiliary device, and the reference is given to the selection of cooling auxiliary device for mechanical seal to a certain extent. In this paper, the true contact area of the seal ring is obtained by measuring the distribution characteristics of the micro-convex body on the end face of the seal ring. The results of phase transition radius and temperature calculated by real contact area and those calculated by nominal contact area are compared with the experimental results. It is found that the sealing temperature is related to the contact area. These results provide a basis for the geometric structure design, application and optimization of mechanical seals, and provide a theoretical basis for future research.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH136
本文編號：2354073
[Abstract]:As an important sealing device in rotating equipment, mechanical seal is widely used in petrochemical, papermaking, food, aviation and other industries. Scholars at home and abroad have done a lot of research on mechanical seal, but most of the research on phase change of sealing medium between the end surfaces of mechanical seal is based on experimental observation, a small amount of theoretical calculation not only has a narrow scope of application. And based on a large number of assumptions. In this paper, the thermal structural coupling analysis method can be used to calculate the phase change radius of mechanical seals in stable operation, which can be widely used in various types of mechanical seals. In this paper, the finite element model of mechanical seal is established under the condition that the end face of mechanical seal is microconvex. The thermal analysis of the model is compiled by APDL language combined with the theoretical calculation results and structural analysis results, and the phase change radius of mechanical seal is obtained. The effects of pressure, temperature, puv value, mechanical seal load coefficient and end face width on the temperature field of the seal ring are studied. The effect on the phase change radius of the sealed medium between the seal faces is obtained. A double end mechanical seal test bench was set up to measure the temperature of the static seal ring at different locations. By comparison, the theoretical calculation results are in good agreement with the experimental results. Combined with the cooling auxiliary device scheme of AP1682-2004 centrifugal pump and rotor pump standard, this paper analyzes the applicable conditions of various schemes, and analyzes the effect of different cooling schemes on the temperature rise of mechanical seal by using FLUENT software. The result is compared with the mechanical seal without cooling auxiliary device, and the reference is given to the selection of cooling auxiliary device for mechanical seal to a certain extent. In this paper, the true contact area of the seal ring is obtained by measuring the distribution characteristics of the micro-convex body on the end face of the seal ring. The results of phase transition radius and temperature calculated by real contact area and those calculated by nominal contact area are compared with the experimental results. It is found that the sealing temperature is related to the contact area. These results provide a basis for the geometric structure design, application and optimization of mechanical seals, and provide a theoretical basis for future research.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH136
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 沈錫華;;機(jī)械密封摩擦副端面的熱應(yīng)力計算[J];北京化工學(xué)院學(xué)報;1980年03期
2 王勝軍,郝木明,張書貴;機(jī)械密封溫度場計算[J];化工機(jī)械;2004年04期
3 陳震;機(jī)械密封技術(shù)研究進(jìn)展——摩擦學(xué)[J];流體工程;1989年05期
4 陳文毅;李學(xué)虎;管洪;;機(jī)械密封溫度場的有限元計算法[J];流體工程;1991年10期
5 郝木明;李香;李鯤;吳兆山;;端面弧形淺槽機(jī)械密封溫度場及變形研究[J];流體機(jī)械;2010年04期
6 耿鵬照;;化工機(jī)械密封的泄漏問題與對策[J];黑龍江科技信息;2011年03期
7 王淮維;郝木明;;串聯(lián)式機(jī)械密封溫度場研究[J];流體機(jī)械;2012年11期
8 曹良知;;中壓和高壓閥門密封面的堆焊[J];焊接;1957年10期
9 孫見君,魏龍,顧伯勤;機(jī)械密封的發(fā)展歷程與研究動向[J];潤滑與密封;2004年04期
10 單曉亮;胡欲立;;基于Ansys的機(jī)械密封環(huán)溫度場分析[J];潤滑與密封;2006年09期
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