Análise modal operacional de uma bomba centrífuga submersa utilizando a decomposição melhorada no domínio da frequência

• Ano de defesa: 2017
• Autor(a) principal: Huamani, Jairo Alvaro Cotaquispe
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Rio de Janeiro; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia; Programa de Pós-Graduação em Engenharia Oceânica; UFRJ
• Palavras-chave em Português: Engenharia oceânica; Bomba centrífuga submersa; Análise modal; CNPQ::ENGENHARIAS::ENGENHARIA NAVAL E OCEANICA
• Link de acesso: http://hdl.handle.net/11422/7409

The identification of modal parameters of electrical submersible pumps (ESP) is part of the process of increasing the reliability of this equipment, which is installed in places that are inaccessible, from a maintenance point of view, for oil exploitation, such as offshore oil wells and seabed, so that any type of intervention is very costly, in addition to production loss. This work aims to identify the modal parameters, that is, the natural frequencies, damping rates and vibration modes of an ESP installed in a mock well through operational and impact tests. The operational modal analysis method employed was the Enhanced Frequency Domain Decomposition (EFDD). The same method was used to identify the modal parameters through impact tests. An EFDD algorithm was developed and tested using theoretical signals and impact test performed on a metal bar. In the case study, using an ESP, the identified modal parameters were compared with those obtained using commercial software and a time domain modal identification algorithm known as Eigen Realization Algorithm (ERA).