兰州石化职业技术学院学报
蘭州石化職業技術學院學報
란주석화직업기술학원학보
JOURNAL OF LANZHOU PETROCHEMICAL VOCATIONAL COLLEGE OF TECHNOLOGY
2013年
3期
19-23
,共5页
黄义仿%郑劲%丁雪兴%赵芳
黃義倣%鄭勁%丁雪興%趙芳
황의방%정경%정설흥%조방
螺旋槽%拟合曲线槽%气膜刚度%测试
螺鏇槽%擬閤麯線槽%氣膜剛度%測試
라선조%의합곡선조%기막강도%측시
spiral groove%fitted curve groove%gas film stiffness%test
推导了两光滑平板间干气密封微尺度流动场的非线性雷诺方程,应用PH线性化方法、迭代法对非线性雷诺方程近似求解,得到气膜压力的近似解析式;利用极坐标下的流线方程,通过Maple程序求解压力方程和流线方程得到流线,此流线就是符合条件的拟合曲线。对拟合曲线槽干气密封气膜刚度进行计算与测试,并与螺旋槽进行比较。研究结果表明:在相同工况下,拟合曲线槽干气密封气膜刚度比螺旋槽大,且气膜刚度比螺旋槽稳定,这在工程实践中具有重要意义和应用价值。
推導瞭兩光滑平闆間榦氣密封微呎度流動場的非線性雷諾方程,應用PH線性化方法、迭代法對非線性雷諾方程近似求解,得到氣膜壓力的近似解析式;利用極坐標下的流線方程,通過Maple程序求解壓力方程和流線方程得到流線,此流線就是符閤條件的擬閤麯線。對擬閤麯線槽榦氣密封氣膜剛度進行計算與測試,併與螺鏇槽進行比較。研究結果錶明:在相同工況下,擬閤麯線槽榦氣密封氣膜剛度比螺鏇槽大,且氣膜剛度比螺鏇槽穩定,這在工程實踐中具有重要意義和應用價值。
추도료량광활평판간간기밀봉미척도류동장적비선성뢰낙방정,응용PH선성화방법、질대법대비선성뢰낙방정근사구해,득도기막압력적근사해석식;이용겁좌표하적류선방정,통과Maple정서구해압력방정화류선방정득도류선,차류선취시부합조건적의합곡선。대의합곡선조간기밀봉기막강도진행계산여측시,병여라선조진행비교。연구결과표명:재상동공황하,의합곡선조간기밀봉기막강도비라선조대,차기막강도비라선조은정,저재공정실천중구유중요의의화응용개치。
Nonlinear Reynolds equation of mic-scale flow field for dry gas seal between two smooth flats was de-rived,and the approximate analytic gas film pressure was abtained by solving the nonlinear Reynolds equation with the linear PH method and iterative method.Flow line was abtained with Maple program solving pressure equation and flow line equation of polar coordinate.The flow line was met the conditions of the fitted curve.Then gas film stiffness of fitted curve dry gas seal was calculated and tested,and compared with spiral groove.The result shows that gas film stiffness of fitted curve groove dry gas seal was bigger and more stable than spiral groove.It was the important significance and application value in engineering.