發(fā)布時間：2018-06-25 15:45

  本文選題：金屬橡膠密封件 + 往復軸動密封��； 參考：《哈爾濱工業(yè)大學》2016年碩士論文

【摘要】：金屬橡膠材料具有耐高壓、耐腐蝕、耐輻射、工作溫度范圍大、承載能力強及不易老化等優(yōu)良特性,這些特性決定了其可以用于解決我國航空航天領域、國防武器裝備等苛刻工況下存在的密封難題。然而,用于往復軸動密封的金屬橡膠密封件尚鮮有研究。本文針對往復軸動密封展開了關于金屬橡膠密封件密封性能的研究。往復軸動密封中初始狀態(tài)下密封件與軸之間的接觸應力分布對密封性能有重要的影響。建立了過盈裝配狀態(tài)下的接觸模型,分析了接觸應力產生原因;利用半平面無限問題的求解方法,推導了金屬橡膠彈性體的接觸應力分布計算公式;分析了包覆層的變形規(guī)律,推導了包覆層由周向拉伸產生的接觸應力分布計算公式;針對實際安裝尺寸的密封件進行了接觸應力分布的實例計算。利用密封件變形應力、接觸應力和液壓油壓力三者之間的平衡關系建立了金屬橡膠密封件動密封數學模型。通過分析相對運動狀態(tài)下金屬橡膠密封件的密封過程,對密封件的幾何輪廓和變形進行了合理的簡化和假設,利用迭代的思想進行了接觸應力分析、流體力學分析、密封件變形分析,得出運動過程中平衡狀態(tài)下密封件在接觸區(qū)域內的變形及泄漏間隙的變化。通過分析金屬橡膠密封件在往復軸動密封中產生泄漏的原因,將液壓油的泄漏歸結為壓差流和剪切流。利用同心圓柱環(huán)形間隙泄漏模型和流體力學中描述一維層流簡化的Navier-Stokes方程,對初始狀態(tài)下、軸伸出過程和縮回過程中的泄漏進行了分析,并利用Persson接觸理論推導了適用于金屬橡膠密封件的泄漏率計算公式。對金屬橡膠密封專用試驗臺進行了改進,增加了摩擦力測量模塊和伺服電機驅動系統(tǒng)。制備了側面開口型金屬橡膠密封件;根據金屬橡膠密封件的安裝要求設計加工了動密封試驗工裝。利用改進的金屬橡膠密封專用試驗臺和動密封試驗工裝進行了金屬橡膠密封件動密封試驗研究,通過對比試驗結果與理論結果驗證理論分析的正確性。
[Abstract]:Metal rubber materials have excellent characteristics such as high pressure resistance, corrosion resistance, radiation resistance, wide range of working temperature, strong bearing capacity and not easy aging. These characteristics determine that metal rubber materials can be used to solve the problem of aerospace industry in China. The sealing problem existing in the harsh working conditions such as national defense weapons and equipment. However, metal rubber seals for reciprocating shaft dynamic seals have not been studied. In this paper, the sealing performance of metal rubber seals is studied for reciprocating shaft dynamic seals. The contact stress distribution between the seal and the shaft in the initial state of reciprocating shaft dynamic seal has an important effect on the seal performance. The contact model of interference assembly is established, the reason of contact stress is analyzed, the formula of contact stress distribution of metal rubber elastomer is deduced by using the method of solving the infinite half plane problem, and the deformation law of coating layer is analyzed. The calculation formula of contact stress distribution caused by circumferential tension is derived, and the contact stress distribution of sealing parts with actual installation size is calculated by an example. The mathematical model of dynamic seal of metal rubber seal was established by using the balance among deformation stress contact stress and hydraulic oil pressure. By analyzing the sealing process of metal rubber seal in relative motion, the geometric profile and deformation of seal are simplified and hypothesized reasonably, and the contact stress analysis and hydrodynamic analysis are carried out using iterative thought. The deformation of the seal in the contact area and the change of the leakage clearance are obtained by analyzing the deformation of the seal. The leakage of hydraulic oil is reduced to differential pressure flow and shear flow by analyzing the reason of leakage of metal rubber seal in reciprocating shaft dynamic seal. Based on the concentric cylindrical annular gap leakage model and the Navier-Stokes equation which describes the one-dimensional laminar flow in hydrodynamics, the leakage in the initial state during the axial extension process and the contraction process is analyzed. The formula for calculating leakage rate of metal rubber seals is derived by Persson contact theory. The special test bed for metal rubber seal was improved, and the friction measurement module and servo motor drive system were added. The side opening metal rubber seal was prepared and the dynamic seal test tool was designed and processed according to the installation requirements of the metal rubber seal. The dynamic seal test of metal rubber seal was carried out by using the improved metal rubber seal special test rig and the dynamic seal test tool. The correctness of the theoretical analysis was verified by comparing the test results with the theoretical results.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TH136

【相似文獻】

相關期刊論文 前10條

1 張繼華;任靈;;橡膠密封件在高壓氣態(tài)下的“卸爆”效應[J];宇航材料工藝;2009年03期

2 高志堯;汽車橡膠密封件[J];汽車與配件;1986年02期

3 ;汽車橡膠密封件[J];國外汽車;1991年01期

4 卜一兵;正確使用橡膠密封件[J];廣東農機;1995年01期

5 崔文毅;工程機械橡膠密封件的失效分析及改進設想[J];筑路機械與施工機械化;1997年04期

6 張幸福;李海燕;;工程機械橡膠密封件的正確選擇與安裝[J];工程機械與維修;2006年03期

7 朱俊;;談液壓橡膠密封件的使用和維修[J];液壓氣動與密封;2010年03期

8 韓安偉;張希恒;;供水閥門用橡膠密封件的檢驗與應用[J];通用機械;2011年04期

9 常新龍;姜帆;惠亞軍;;導彈橡膠密封件環(huán)境失效研究[J];裝備環(huán)境工程;2011年04期

10 王家全;;試制“三合一”鉆頭橡膠密封件的綜合實踐報告[J];成都工學院學報;1975年01期

相關重要報紙文章 前2條

1 記者 張越姣;精華橡膠密封件廠開發(fā)新產品35種[N];鐵嶺日報;2007年

2 記者 張芙蕖;清華大學與我市一企業(yè)共建研究生實踐基地[N];鐵嶺日報;2009年

相關碩士學位論文 前6條

1 劉建國;高溫環(huán)境下金屬橡膠密封件封嚴特性分析及試驗研究[D];哈爾濱工業(yè)大學;2015年

2 趙亞磊;金屬橡膠密封件往復軸動密封性能研究[D];哈爾濱工業(yè)大學;2016年

3 李遠超;金屬橡膠密封件溫度特性研究及專用試驗臺研制[D];哈爾濱工業(yè)大學;2013年

4 張文靜;金屬橡膠密封件泄漏率分析及試驗研究[D];哈爾濱工業(yè)大學;2014年

5 張佐;太陽電池陣驅動電機橡膠密封件失效機理及試驗研究[D];哈爾濱工業(yè)大學;2011年

6 趙宏宇;O形金屬橡膠密封件性能分析及應用研究[D];哈爾濱工業(yè)大學;2008年

，

本文編號：2066562