Computation formulas of pressure distribution and dynamic and static characteristics of radius - thrust float ring hybrid bearing are deduced 建立了数学模型,推导出相应的reynolds方程和动静特性系数表达式。
All above , the test and the theoretical research formed the basis of practical application for the radical - thrust floating ring hybrid bearing 以上轴承的试验研究及理论推导为径向?推力联合浮环动静压轴承的进一步研究和工程应用奠定了基础。
This paper is a part of the research project named the static and dynamic characteristic research of the radial - thrust floating ring hybrid bearing which is supported by the natural science and technology research foundation of the nation 本文完成的工作是国家自然科学基金项目“径向?推力联合浮环动静压轴承静、动特性研究”中的一部分。
At the same time , the temperature fields of the radial - thrust floating ring hybrid bearing which includes the lubricant inertia item is discussed , the associated equations and the boundary conditions of temperature are given 同时,本文对计入惯性项下径推联合浮环轴承的温度场问题进行了理论研究,首次导出了该种情况下的联立方程组和边界条件。
In this paper , based on the theory of radial - thrust floating ring hybrid bearing , the dynamic characteristic test for this kind of hybrid bearing is accomplished on the self - made test stand , the dynamic characteristics of the testing bearing are got , and the dynamic characteristic coefficients of the thrust part of the bearing are measured for the first time , the result of the test is compared with the theoretical calculation 本文是在径向?推力联合浮环动静压轴承理论研究的基础上,利用自制的实验台完成了对该轴承的动特性试验研究,首次得到了测试轴承的动态特性,并将实验结果和理论计算进行了对比。
Furthermore , the temperature fields of the radial - thrust floating ring hybrid bearing which includes the lubricant inertia item is stud ied for the first time , the reynolds and energy equations are derived , the relationship between viscosity and temperature as well as the boundary condition of pressure and temperature are developed 此外,本文还首次对考虑惯性项下该动静压轴承的温度场进行了理论研究,建立了数学模型,导出了该浮环动静压轴承径向部分、推力部分的能量方程、雷诺方程以及粘温关系、压力、温度边界条件等。
Exciting method is used to measure the damping , the four damping coefficients of the radial part and a damping coefficient of the thrust part can be obtained though hammering the testing bearing which is in a equilibrium position . based on the testing data , the dynamic characteristic curves of the radial - thrust floating ring hybrid bearing are drawn and compared with the theoretical curves 采用激振法测量轴承的阻尼,对处于平衡位置的测试轴承分别沿水平方向、上45度方向及轴向进行锤击,根据锤击法原理求得各个转速下轴承径向部分内、外膜总阻尼系数以及推力部分内、外膜总阻尼系数。
With this purpose , this paper researches the state of dometic and overseas seal technique ; uses other enterprise ' s successful experiments for reference ; combines the factory set ' s structural property , technics characteristic and the different request of medium leakage degree ; considers the respective strongpoints of floating ring seal , conical floating seal , suction labyrinth seal , inflator labyrinth seal , mechanical seal , dry gas seal ; finds out the optimum , dependable seal techinique fiting for each set on the base of entire analysis on the centrifugal compressor . and in the end by putting this plan into practice the factory achieves localized reconstructs , reduces the production cost and fulfils the demands of secular safe use 本文在把握国内外离心压缩机密封技术的发展状况,借鉴其他企业的成功经验基础上,根据我厂机组结构特性、工艺特性、介质泄漏程度要求的不同,以及浮环密封、锥形浮环密封、抽充气式迷宫密封、机械密封、干气密封的各自特点,对离心压缩机存在的密封问题进行了全面剖析,研究了适合每台机组最佳、可靠的密封技术,实施了本地化技术改造,降低了生产成本,满足了机组长期稳定运行的生产要求,取得了显著的经济效益和社会效益。