西安交通大学能源与动力工程学院,西安,710049
网络首发:2014-03-10,
纸质出版:2014
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赖天伟 1, 马斌 1, 郑越青 1, 等. 多层弹性支承箔片动压气体径向轴承稳定性的实验研究[J]. 西安交通大学学报, 2014,48(3):79-83.
Experimental Investigation on Stability of Multi-Decked Protuberant Foil Gas Journal Bearing[J]. 2014, 48(3): 79-83.
赖天伟 1, 马斌 1, 郑越青 1, 等. 多层弹性支承箔片动压气体径向轴承稳定性的实验研究[J]. 西安交通大学学报, 2014,48(3):79-83. DOI: 10.7652/xjtuxb201403015.
Experimental Investigation on Stability of Multi-Decked Protuberant Foil Gas Journal Bearing[J]. 2014, 48(3): 79-83. DOI: 10.7652/xjtuxb201403015.
为了保证轴承支承高速转子的稳定运行
提出了一种具有多层弹性支承结构的新型箔片动压气体轴承。该轴承采用两层或多层具有鼓泡状凸起阵列的金属箔片作为弹性支承结构
通过调整鼓泡阵列的周向和轴向截距或调整上下层弹性箔片布置
可以实现轴承支承刚度特性和阻尼特性的调节。在直径为25 mm主轴的高速(10万r/min)透平膨胀机上
实验研究了这种箔片轴承支承高速转子的运转特性
详细分析了3种典型排列方式下转速与压力的关系
以及高速转子升速及降速特性。结果表明:采用不同的多层结构排列方式
可以有效调整和改善弹性箔片轴承支承高速透平转子的刚度和阻尼特性
抑制高速转子的不稳定涡动; 多层弹性箔片轴承能够产生多重刚度及多重阻尼
从而改进了传统箔片轴承刚度和阻尼的影响
改善了弹性箔片动压气体轴承的稳定性和可靠性。
A kind of new hydrodynamic gas foil bearing with multi-decked elastic supporting structure was proposed for the stable operation of the high speed rotor supported by gas foil bearing. In this kind of foil bearing
double or multi layers of protuberant foils with projection array are adopted as the supporting structure
and the bearing stiffness and damping characteristics adjustments can be realized through changing the pitch of spherical crown in the peripheral and axial directions as well as the arrangement of the supporting foils. The experimental investigation on the high speed rotor supported by the new foil bearing was conducted on a high speed turboexpander with the rotor diameter of 25 mm. The relations between rotor speed and supply pressure
and the feature of the rotor speed-up and speed-down processes using three typical arrangement modes were analyzed. The test results show that the stiffness and damping characteristics can be adjusted and improved effectively by adopting different foil arrangement modes for the rotor supported by elastic foil bearing
and the unstable wobble can be suppressed. In addition
stiffness and damping effect in conventional gas journal bearing may be improved by introducing multiple stiffness and damping characteristics generated in the multi-decked structure of elastic foil bearing
leading to a better stability and reliability of the present hydrodynamic gas foil bearing.
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马斌,孙皖,赖天伟,等.波箔箔片动压气体轴承的实验研究.2014,48(1):118-122.[doi:10.7652/xjtuxb201401020]
周权,侯予,陈汝刚.应用于高速透平膨胀机的箔片动压气体止推轴承的试验研究.2012,46(11):49-52.[doi:10.7652/xjtuxb201211010]
付雷,丰镇平.毫米级微型燃气轮机系统设计原则与可实现性循环分析.2011,45(5):42-46.[doi:10.7652/xjtuxb201105 008]
陈双涛,侯予,陈汝刚,等.高速透平膨胀机临界转速的计算与分析.2010,44(9):33-37.[doi:10.7652/xjtuxb201009007]
陈汝刚,周权,刘烨,等.新型箔片动压止推气体轴承承载特性的试验研究.2010,44(9):54-58.[doi:10.7652/xjtuxb 201009011]
陈汝刚,侯予,陈纯正.微型气浮轴承高速透平膨胀机的研制.2010,44(1):61-65.[doi:10.7652/xjtuxb201001014]
景敏卿,刘恒,沈园,等.新型挤压膜气体轴承的研究.2008,42(7):799-802.[doi:10.7652/xjtuxb200807003]
陈汝刚,侯予,袁秀玲,等.低温透平制冷机的静压气体润滑轴承研究.2007,41(7):792-796.[doi:10.7652/xjtuxb2007 07009]
杨利花,李辉光,虞烈.可倾瓦动压气体轴承动态特性的频率效应.2007,41(3):330-333.[doi:10.7652/xjtuxb200703015]
王林忠,侯予,崔明现,等.箔片轴承结构阻尼的评价.2006,40(1):40-44.[doi:10.7652/xjtuxb200601010]
马石磊,马求山,王琳,等.高速动静压轴承支承主轴系统动特性测试研究.2011,45(5):52-58.[doi:10.7652/xjtuxb 201105010]
刘显军,洪军,朱永生,等.多支承轴系轴承受力与刚度的有限元迭代计算方法.2010,44(11):41-45.[doi:10.7652/xjtuxb201011009]
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