Foil bearing provides compliant support and moderate Coulomb friction for rotor-bearing system, which is conducive to stability and reliability of high speed rotating machinery. In this paper, both hydrodynamic lubricated foil journal and foil thrust bearings are applied in a 150 m3·h−1 turboexpander for air separation. In the bearings, protuberant foil is chosen as the supporting subfoil due to its merits of easy fabrication and assembly. Static loading and deflection of the bearings are tested, respectively, before integration into the turboexpander. Afterwards, the loading and deflection curves of the journal and thrust bearings are polynomial fitted using least-square method. Then, performance tests are carried out on the rotor-bearing system, including transient speed-up, high speed, and speed-down processes. In the tests, the turboexpander supported by the hydrodynamic foil bearings operates smoothly with repeatability. Maximal rotor speed of the turboexpander reaches 52000 rpm with hydrodynamic lubricated protuberant foil bearings.
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2q7uJ4m
via IFTTT
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
Objective Outpatient parenteral antimicrobial therapy (OPAT) provides opportunities for improved cost savings, but in the UK, implementation...
-
Abstract Purpose Overcoming the flaws of current data management conditions in head and neck oncology could enable integrated informatio...
-
Universal newborn hearing screening (UNHS) has become the standard of care in many countries. The aim of this study was to evaluate the resu...
-
Geographic region: Does it matter in cutaneous melanoma of the head and neck? Laryngoscope. 2017 Jun 05;: Authors: Kılıç S, Unsal AA,...
-
The overall objective of the guideline is to provide up-to-date, evidence-based recommendations for the management of lichen sclerosus (LS)...
-
Abstract The head-mounted display (HMD) has the potential to improve the quality of ultrasound-guided procedures. The aim of this non-clin...
-
http://ift.tt/2pnwWaQ
-
Objective. We compared the effects of transcranial direct current stimulation at different cortical sites (premotor and motor primary cortex...
-
Background. Globally 3 to 8% of reproductive age women are suffering from premenstrual dysphoric disorder (PMDD). Several mental and reprodu...
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου