Search


Information
ICMST-Tohoku 2018
Oct. 23 - 26, 2018
Sendai, Japan
ICMST-Shenzhen 2016
Nov 1 - 4, 2016
Shenzhen, China
(EXIT THIS PAGE)
ICMST-Kobe 2014
Nov 2(Sun) - 5(Wed), 2014
Kobe, Japan
Nuclear Regulation Authority Outline of the New Safety Standards for Light Water Reactors for Electric Power Generation
For Public Comment
Outline of New Safety Standard (Design Basis)
For Public Comment
New Safety Standards (SA) Outline (Draft)
For Public Comment
Outline of New Safety Standard(Earthquake and Tsunami)(DRAFT)
Issues
 

Vol.10 No.2(Aug)
Vol.10 No.1(May)
Vol.9 No.4(Feb)
Vol.9 No.3(Nov)

< Other Issues

 

Occasional Topics
OTjapan Measures for Tsunami Striking Nuclear Power Station in Japan
Special Article: The Great Tohoku Earthquake (1)
OTjapan The Tragedy of “To Be” Principle in the Japanese Nuclear Industry
EJAMOT_CN3_Figure1_The_outside_view_of_CEFR OTChinaPlanning and Consideration on SFR R&D Activities in China
< All Occasional Topics

Featured Articles
EJAM7-3NT72 A New Mechanical Condition-based Maintenance Technology Using Instrumented Indentation Technique
EJAM7-3NT73 Survey robots for Fukushima Daiichi Nuclear Power Plant

JSM
Contacts
(EJAM): ejam@jsm.or.jp
(JSM): secretariat@jsm.or.jp
HP: http://www.jsm.or.jp
(in English)

 

Vol.3 No.1 previous GA 17 -AA34 - 35- NT 36 - 37-38next Vol.3 No.3

Academic Articles
Regular Paper (Contributed) Vol.3No.2 (2011) p.78 - p.91
 

ANALYSIS OF HYDRAULIC BEARING EFFECT FOR
ANTI-VIBRATION BEARING OF VERTICAL-SHAFT PUMP

 
Hiroshi Miyano1,Tadashi Narabayashi1and Takeshi Hagiwara2
 
1Hokkaido University, Graduate School of Engineering 5 Nishi, 8jou Kita, Kita-ku, Sapporo, 060 Japan
2 Toshiba Corporation
E-mail: miyano@jsm.or.jp
 
Abstract
In inner-rotating non coaxial cylinders, axial flow causes a hydraulic bearing effect by which the inner cylinder is put at the center of the axis of the outer cylinder, because of the pressure distribution along the surface of the inner cylinder. When the rotating speed becomes higher, whirl force is generated by the pressure distribution in the narrow gap side. Therefore, pocket-type hydraulic bearing was added for anti-whirl vibration between the rotor and the wearing, based on an experiment and flow analysis. The pockets suck a part of discharged water of a pump and pressurize water along the rotational direction in the pocket. The pressurized water enhance the hydraulic bearing effect. The analysis results showed good agreement with the experiments, and the analysis method for the hydraulic bearing of vertical-shaft pump was established.
 
Keywords
Hydraulic Bearing, Vertical-Shaft Pump, Flow Analysis, Whirl Force
 
Full Paper: PDF EJAM Vol.3No.2 pp.78-91 "ANALYSIS OF HYDRAULIC BEARING EFFECT FOR ANTI-VIBRATION BEARING OF VERTICAL-SHAFT PUMP
Article Information
Article history:
Received 26 Jan 2011
Accepted 24 Aug 2011