Proposta de algoritmo para detecção de vazamentos em oleodutos utilizando análise freqüencial de sinais de pressão
AUTOR(ES)
Fabiano Medeiros de Azevedo
DATA DE PUBLICAÇÃO
2009
RESUMO
Pipeline leak detection is a matter of great interest for companies who transport petroleum and its derivatives, in face of rising exigencies of environmental policies in industrialized and industrializing countries. However, existing technologies are not yet fully consolidated and many studies have been accomplished in order to achieve better levels of sensitivity and reliability for pipeline leak detection in a wide range of flowing conditions. In this sense, this study presents the results obtained from frequency spectrum analysis of pressure signals from pipelines in several flowing conditions like normal flowing, leakages, pump switching, etc. The results show that is possible to distinguish between the frequency spectra of those different flowing conditions, allowing recognition and announce of liquid pipeline leakages from pressure monitoring. Based upon these results, a pipeline leak detection algorithm employing frequency analysis of pressure signals is proposed, along with a methodology for its tuning and calibration. The proposed algorithm and its tuning methodology are evaluated with data obtained from real leakages accomplished in pipelines transferring crude oil and water, in order to evaluate its sensitivity, reliability and applicability to different flowing conditions
ASSUNTO(S)
fourier transform. leak detection frequency analysis engenharia eletrica oil pipelines detecção de vazamentos análise freqüencial oleodutos transformada de fourier
Documentos Relacionados
- Detecção de vazamentos em tubulações atraves da analise espectral de transientes de pressão
- Implantação de um sistema de detecção de vazamentos em oleodutos com tratamento de alarmes falsos
- On-line leak detection in pressure vessels using sonic systems
- Detecção de vazamentos em tubulações transportando gas
- Leak detection in pipelines through acoustic method and pressure transient analysis