کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8044037 | 1518914 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design and development of large radial clearance static and dynamic magnetic fluid seal
ترجمه فارسی عنوان
طراحی و توسعه ترمینال شعاعی بزرگ ثابت و پویا مایع مغناطیسی مهر و موم
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کلمات کلیدی
مایع مغناطیسی، مهر و موم روتاری، فشار خلاء، بارگذاری هیدرواستاتیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
چکیده انگلیسی
A large radial clearance (0.7â¯mm) static and dynamic magnetic fluid seal is designed and its performance is tested. The radial clearance of 0.7â¯mm is quite higher than the most of the commercial seals which have maximum radial clearance of 0.3â¯mm. Hydrostatic magnetic fluid “plug” is created in 5.94â¯mm glass tube and it is tested for various plug heights with respect to the pole piece height. Results show that as plug height increases the pressure holding capacity increases and then for optimum fluid height it becomes maximum. The increase in fluid magnetization also increases the pressure holding capacity of fluid plug. Using these results the dynamic seal having a large radial clearance (0.7â¯mm) is designed and simulated using FEMM. The prototype test set-up is fabricated with multiple magnetic sources for 0.7â¯mm radial clearance between the rotating shaft (DIA: 25â¯mm) and the pole piece. The seal assembly is tested for transformer oil based magnetic fluid for variable speed and the number of stages under vacuum pressure of 10â3mbar. Results show three stages are sufficient to achieve 10â2mbar pressure difference at 1500â¯rpm. Such seal can work as the bearing protection in low vacuum devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 156, October 2018, Pages 325-333
Journal: Vacuum - Volume 156, October 2018, Pages 325-333
نویسندگان
Saurabh Parmar, Venkat Ramani, R.V. Upadhyay, Kinnari Parekh,