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http://dx.doi.org/10.5050/KSNVN.2003.13.3.194

A Study on the Vibration Phenomena of the Duct-fan Systems in Fossil Fueled Boilers : Inlet Vortex Induced Excessive Vibration  

김철홍 (두산중공업㈜ 기술연구원)
주영호 (두산중공업㈜ 기술연구원)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.13, no.3, 2003 , pp. 194-201 More about this Journal
Abstract
During the operation, fatigue failures and cracks of duct plate due to excessive duct vibration occurred in a fan-duct system of fossil fueled boilers. We measured static pressure variation (pressure pulsation) in the outlet, and also measured vibration at the outlet duct of a centrifugal fan. It was found that strong pressure pulsation caused by the inlet vortex occurred in inlet vane of centrifugal fan in the middle range of vane opening. Thus, excessive duct vibration is caused by strong pressure pulsation. In this Paper, it is shown that the frequency and amplitude of pressure pulsation depend mainly on vane opening and are compared with duct vibration. Also, effective solution for reducing pressure pulsation and vibration are presented.
Keywords
Centrifugal Fan; Primary Air Duct; Inlet Vortex; Pressure Pulsation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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[ 김철홍;방경보;주영호;변형현 ] / 한국소음진동공학회 추계학술대회논문집
2 A Study of the Inlet Vortex In a Centrifugal Fan /
[ Chen, P.;Soundra-Nayagam;Bolton A. N.;Simpson, H. C ] / Proceedings of the 11th Australasian Fluid Mechanics Conference
3 Flow-induced Vibrations and Noise in Tube-bank Heat Exchangers Due to Von Karman Streets /
[ Chen, Y. N. ] / ASME, 67-VIBR-48
4 A Summary of Experiences with Fan Induced Duct Vibrations on Fossil Fueled Boilers /
[ Rogers, J. D.;Gilkey, C. H. ] / American Power Conference, Combustion Engineering Publication TIS-4512
5 화력 발전용 보일러 Duct/Fan 시스템의 진동현상에 대한 연구-Inlet vortex에 의한 과대진동 사례 /
[ 김철홍;주영호;변형현 ] / 추계학술대회논문집
6 열교환기에서의 유동유발 진동 저감 /
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