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화력 발전용 보일러 덕트-홴 시스템의 진동현상에 대한 연구 : 입구측 와류에 의한 과대진동 사례

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

  • 발행 : 2003.03.01

초록

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.

키워드

참고문헌

  1. American Power Conference, Combustion Engineering Publication TIS-4512 A Summary of Experiences with Fan Induced Duct Vibrations on Fossil Fueled Boilers Rogers, J. D.;Gilkey, C. H.
  2. ASME, 67-VIBR-48 Flow-induced Vibrations and Noise in Tube-bank Heat Exchangers Due to Von Karman Streets Chen, Y. N.
  3. 한국소음진동공학회논문집 v.9 no.6 열교환기에서의 유동유발 진동 저감 장한기;김승한;이재현;양정렬
  4. 한국소음진동공학회 추계학술대회논문집 75MW급 발전용 보일러 관군에서의 음향공진에 의한 진동/소음 사례연구 김철홍;방경보;주영호;변형현
  5. Proceedings of the 11th Australasian Fluid Mechanics Conference A Study of the Inlet Vortex In a Centrifugal Fan Chen, P.;Soundra-Nayagam;Bolton A. N.;Simpson, H. C
  6. 추계학술대회논문집 화력 발전용 보일러 Duct/Fan 시스템의 진동현상에 대한 연구-Inlet vortex에 의한 과대진동 사례 김철홍;주영호;변형현

피인용 문헌

  1. Resonant Vibration Analysis of Back-pass Heat Surface in the Power Plant Boiler vol.28, pp.6, 2018, https://doi.org/10.5050/KSNVE.2018.28.6.701