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Esta dissertação apresenta uma análise detalhada sobre a mitigação de transitórios hidráulicos
em equipamentos siderúrgicos, com foco no dimensionamento e implementação de
um acumulador de pressão. O estudo foi realizado no contexto do sistema hidráulico do
leito de arrefecimento da empresa MEGASA, onde as variações bruscas de pressão comprometem
diretamente a eficiência e a segurança operacional. Para resolver o problema,
foi desenvolvido um modelo numérico, utilizando o programa Automation Studio, que foi
validado através dos dados experimentais.
Primeiramente, foi simulado o circuito hidráulico sem o acumulador de pressão, com o
objetivo de compará-lo com os dados reais. O modelo numérico demonstrou uma elevada
precisão ao reproduzir o comportamento do sistema real, comprovada pela semelhança
nos valores de pressão inicial, final e nos picos de pressão observados em ambas as
abordagens. Ainda assim, observaram-se discrepâncias no comportamento da pressão ao
longo do tempo, devido às limitações do programa utilizado.
Apesar disso, o modelo revelou-se uma ferramenta eficaz para prever e mitigar os
efeitos dos transitórios hidráulicos com a introdução de um acumulador de pressão.
Através da comparação das simulações com e sem o acumulador, comprova-se que a
incorporação do mesmo trouxe uma maior estabilidade ao sistema, prolongando a vida
útil dos componentes.
O estudo demonstra que o modelo desenvolvido pode ser utilizado como um recurso
fiável e abre possibilidades para futuras otimizações, tanto em termos de eficiência como
de segurança operacional.
This dissertation presents a detailed analysis of the mitigation of hydraulic transients in steel industry equipment, focusing on the design and implementation of a pressure accumulator. The study was conducted in the context of the hydraulic system of the cooling bed at MEGASA, where abrupt pressure variations directly compromise both efficiency and operational safety. To address this issue, a numerical model was developed and validated through simulations performed using the Automation Studio software. Initially, the hydraulic circuit was simulated without the pressure accumulator, in order to compare it with real data. The numerical model demonstrated high accuracy in reproducing the real system’s behavior, as evidenced by the close match in the initial and final pressure values, as well as the pressure peaks observed in both cases. Nevertheless, some discrepancies were noted in the pressure behavior over time, due to limitations inherent to the software used. Despite this, the model proved to be an effective tool for predicting and mitigating the effects of hydraulic transients with the implementation of a pressure accumulator. By comparing the simulations with and without the accumulator, it was confirmed that its incorporation provided greater system stability and extended the components’ lifespan. The study demonstrates that the developed model can be used as a reliable resource and opens possibilities for future optimizations in terms of both efficiency and operational safety.
This dissertation presents a detailed analysis of the mitigation of hydraulic transients in steel industry equipment, focusing on the design and implementation of a pressure accumulator. The study was conducted in the context of the hydraulic system of the cooling bed at MEGASA, where abrupt pressure variations directly compromise both efficiency and operational safety. To address this issue, a numerical model was developed and validated through simulations performed using the Automation Studio software. Initially, the hydraulic circuit was simulated without the pressure accumulator, in order to compare it with real data. The numerical model demonstrated high accuracy in reproducing the real system’s behavior, as evidenced by the close match in the initial and final pressure values, as well as the pressure peaks observed in both cases. Nevertheless, some discrepancies were noted in the pressure behavior over time, due to limitations inherent to the software used. Despite this, the model proved to be an effective tool for predicting and mitigating the effects of hydraulic transients with the implementation of a pressure accumulator. By comparing the simulations with and without the accumulator, it was confirmed that its incorporation provided greater system stability and extended the components’ lifespan. The study demonstrates that the developed model can be used as a reliable resource and opens possibilities for future optimizations in terms of both efficiency and operational safety.
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Transitórios hidráulicos acumulador de pressão modelação numérica equipamento siderúrgico
