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首页> 外文期刊>Journal of Engineering for Gas Turbines and Power >Remaining Technical Challenges and Future Plans for Oil-Free Turbomachinery
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Remaining Technical Challenges and Future Plans for Oil-Free Turbomachinery

机译：无油涡轮机械的剩余技术挑战和未来计划

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摘要

The application of oil-free technologies (foil gas bearings, solid lubricants, and advanced analysis and predictive modeling tools) to advanced turbomachinery has been underway for several decades. During that time, full commercialization has occurred in aircraft air cycle machines, turbocompressors, cryocoolers, and ever-larger microturbines. Emerging products in the automotive sector (turbochargers and superchargers) indicate that a high volume serial production of foil bearings is imminent. The demonstration of foil bearings in auxiliary power units and select locations in propulsion gas turbines illustrates that such technology also has a place in these future systems. Foil bearing designs, predictive tools, and advanced solid lubricants that can satisfy anticipated requirements have been reported, but a major question remains regarding the scalability of foil bearings to ever-larger sizes to support heavier rotors. In this paper, the technological history, primary physics, engineering practicalities, and existing experimental and experiential database for scaling foil bearings are reviewed, and the major remaining technical challenges are identified.
机译：无油技术（箔气体轴承，固体润滑剂以及先进的分析和预测建模工具）在先进的涡轮机械中的应用已经进行了数十年。在此期间，飞机空气循环机，涡轮压缩机，低温冷却器和越来越大的微型涡轮机已经实现了完全商业化。汽车领域的新兴产品（涡轮增压器和增压器）表明，箔轴承的批量生产迫在眉睫。辅助动力装置中的箔片轴承的演示以及推进式燃气轮机中特定位置的演示表明，此类技术在这些未来系统中也占有一席之地。可以满足预期要求的铝箔轴承设计，预测性工具和先进的固体润滑剂已被报道，但对于箔轴承至更大尺寸以支持较重转子的可扩展性，仍然存在主要问题。在本文中，回顾了结垢箔轴承的技术历史，主要物理学，工程实践以及现有的实验和经验数据库，并确定了主要的剩余技术挑战。

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