本文關(guān)鍵詞： W形環(huán) 應(yīng)力分析 密封性能 優(yōu)化分析 動(dòng)力學(xué)分析　出處：《北京化工大學(xué)》2011年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：金屬密封環(huán)是目前工業(yè)上最為廣泛應(yīng)用的一種靜密封結(jié)構(gòu)形式,雖然它的結(jié)構(gòu)尺寸與整個(gè)設(shè)備相比很小,但它密封性能的好壞會(huì)直接影響到整個(gè)設(shè)備、乃至整個(gè)系統(tǒng)的安全運(yùn)行。目前工業(yè)上主要使用的密封結(jié)構(gòu)形式有金屬O形環(huán)、金屬C形環(huán)等等,它們?cè)诓煌墓ぷ鲌?chǎng)合均發(fā)揮了重要的作用。但是在動(dòng)設(shè)備中,傳統(tǒng)的密封環(huán)不能夠很好地滿(mǎn)足使用的要求,經(jīng)常發(fā)生泄漏現(xiàn)象,這對(duì)于像航空航天等這樣精密的工業(yè)來(lái)說(shuō),是絕對(duì)不允許出現(xiàn)的。 基于這樣的應(yīng)用背景,本文提出了W形金屬密封環(huán)(以下簡(jiǎn)稱(chēng)W形環(huán)),其目的主要是將它用在直升飛機(jī)上,這種新型的密封結(jié)構(gòu)形式目前在國(guó)內(nèi)很少使用,與其它結(jié)構(gòu)形式的密封環(huán)相比,它振動(dòng)的追隨性好,更適合用在振動(dòng)的場(chǎng)合,在工業(yè)領(lǐng)域中有很大的發(fā)展空間。本文對(duì)它的研究主要借助ANSYS軟件,其研究?jī)?nèi)容如下： 1、建立W形環(huán)的有限元模型,并對(duì)初始結(jié)構(gòu)參數(shù)下的密封環(huán)在三種不同工況下的應(yīng)力進(jìn)行分析。 2、運(yùn)用有限元法,分別從操作參數(shù)和結(jié)構(gòu)參數(shù)兩個(gè)方面對(duì)密封環(huán)進(jìn)行應(yīng)力及密封性能的分析與討論。 3、運(yùn)用ANSYS優(yōu)化工具,根據(jù)不同的預(yù)緊要求,分別對(duì)W形環(huán)進(jìn)行結(jié)構(gòu)優(yōu)化,并最終確定出合理的結(jié)構(gòu)參數(shù)。 4、對(duì)W形環(huán)進(jìn)行動(dòng)力學(xué)分析,如模態(tài)分析和諧響應(yīng)分析,了解W形環(huán)的動(dòng)力學(xué)特性,得出W形環(huán)在不同約束條件下的固有頻率及在簡(jiǎn)諧激勵(lì)下的穩(wěn)態(tài)響應(yīng)。 5、對(duì)W形環(huán)進(jìn)行密封泄漏實(shí)驗(yàn)及軸向剛度實(shí)驗(yàn),并與理論分析結(jié)果比較,通過(guò)比較發(fā)現(xiàn)其實(shí)驗(yàn)結(jié)果與分析結(jié)果比較吻合,從而進(jìn)一步驗(yàn)證了理論分析的合理性與正確性。
[Abstract]:Metal seal ring is the most widely used static seal structure in industry at present. Although its structure size is very small compared with the whole equipment, its sealing performance will directly affect the whole equipment. And even the safe operation of the whole system. At present, the main sealing structures used in industry are metal O-ring, metal C-ring and so on. They play an important role in different workplaces, but in the moving equipment, the traditional seal ring can not meet the requirements of the use, often occurs leakage phenomenon. This is absolutely not allowed for sophisticated industries such as aerospace. Based on this application background, this paper presents a W-shaped metal seal ring, which is mainly used in helicopters. This new type of sealing structure is rarely used in China. Compared with other types of sealing ring, its vibration is more suitable for vibration, and has a great development space in the field of industry. In this paper, it is mainly studied by ANSYS software. The contents of the study are as follows: 1. The finite element model of the W ring is established, and the stress of the seal ring under the initial structural parameters under three different working conditions is analyzed. 2. Using the finite element method, the stress and sealing performance of the seal ring are analyzed and discussed from the two aspects of the operating parameters and the structural parameters respectively. 3. Using the ANSYS optimization tool, according to the different pre-tightening requirements, the structure of the W-ring is optimized, and the reasonable structural parameters are finally determined. 4. Dynamic analysis of the W-ring, such as modal analysis, harmonious response analysis, to understand the dynamic characteristics of the W-ring. The natural frequencies of W-shaped rings under different constraints and the steady-state responses under harmonic excitation are obtained. 5. The seal leakage test and axial stiffness experiment of the W ring are carried out, and the results are compared with the theoretical analysis results, and the experimental results are found to be in good agreement with the analysis results. Thus, the rationality and correctness of the theoretical analysis are further verified.
【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】：2011
【分類(lèi)號(hào)】：V229;TH136

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