Experimentation and Modelling of Novel Adaptive Shaft Seals for use in Turbomachinery

涡轮机械用新型自适应轴密封件的实验和建模

• 批准号: 2889798
• 金额: --
• 依托单位: University of Bath
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2889798
• 关键词: Experimentation; Modelling; Novel; Adaptive; Shaft

Experimental and modelling project developing novel shaft seals for gas turbines with The Turbomachinery Research Group (TRG) at the University of Bath. Seals between high- and low-pressure turbine sections to reduce leakage are critical components in turbomachinery and electric motors.Start-up and shut-down transients often experienced in large rotating equipment lead to varying seal clearances. This poses a challenge in designing seals to prevent rubs, reduce leakage and improve rotor stability, critical for reaching net-zero propulsion.Comparable seal designs include:- Labyrinth seals, widely used due to low cost and high speed, pressure and temperature capabilities, but suffer from rubs and diminishing performance.- Brush seals and leaf seals, using flexible bristles or leaves respectively, improve leakage performance over labyrinth seals by an order of magnitude, whilst still suffering from diminishing performance from rubsAdaptive seals are an in-development design case aimed at accommodating larger rotor eccentricities during start-up and shut-down by dynamically accommodating for a changing clearance, whilst maintaining or improving the leakage and stability performance compared to comparable seal designs.This project aims to advance the understanding of adaptive seal designs for future applications by using the already existing experimental facility to inform and validate theoretical models that can then be used to influence design. The facility is capable of replicating and controlling the conditions in seal use-cases.The co-funding sponsor of this project is Cross Manufacturing Ltd., a leading supplier of brush seal components to the aerospace and power generation industries. The project will closely work with Cross to perform experiments and ensure that meaningful results are implemented at the company.It is an additional expectation of the project that research is disseminated through publications and presented at the annual ASME Turbo Expo conference.

实验和建模项目通过巴斯大学的涡轮机械研究小组（TRG）开发了燃气轮机的新型轴密封。高压和低压涡轮截面之间以减少泄漏的密封件是涡轮机械和电动机中的关键组件。开始在大型旋转设备中经常经历的启动和关闭的瞬态导致密封间隙变化。这在设计密封以防止摩擦，减少泄漏并提高转子稳定性方面构成了挑战，对于达到零零推进的稳定性至关重要，可靠的密封设计包括： - 迷宫密封，由于低成本和高速，压力和温度能力而广泛使用，由于摩擦和较小的性能而遭受漏洞的效果。大小，虽然仍然遭受了摩擦adappaptive密封的性能降低的发展是一个发展的设计案例，旨在容纳较大的转子偏心率，并通过动态地容纳清除率，并通过动态地容纳不断变化的漏洞，同时维持或改善泄漏和稳定性，以提高与可比性的范围相比的漏洞和稳定性，以提高漏洞和稳定性，以提高型号的实现。理论模型然后可用于影响设计。该设施能够复制和控制密封用例中的条件。该项目的共同资助赞助商Cross Manufacturing Ltd.是航空航天和发电行业的刷子密封组件的领先供应商。该项目将与Cross紧密合作，以执行实验并确保在公司实施有意义的结果。这是该项目的另一种期望，即通过出版物传播研究并在年度ASME ASME Turbo Expo会议上介绍。