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Ações de melhoria de performance e competitividade das gamas de motores elétricos fabricados na WEGEURO
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| 13.57 MB | Adobe PDF |
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Abstract(s)
O presente trabalho foi realizado no âmbito de um estágio curricular na WEGeuro e teve como principal objetivo a melhoria da performance e competitividade das gamas de motores elétricos fabricados na respetiva entidade. A WEGeuro produz essencialmente motores elétricos para áreas de atividade especializada tais como aplicações em atmosferas explosivas. Este projeto de intervenção focou-se em três etapas principais que por sua vez espelham o trabalho desenvolvido ao longo de seis meses de estágio. A primeira etapa teve como objetivo a criação de mapas de ventilação de modo a compreender a influência dos ventiladores no desempenho dos motores elétricos. Para isso, foram selecionados os ventiladores mais aptos e viáveis de serem utilizados em cada motor elétrico sendo estes depois submetidos a ensaios laboratoriais de forma a permitir registar o seu comportamento. Assim, no futuro, caso a ventilação de algum motor não satisfaça os requisitos de ruído, caudal ou perdas mecânicas poderá recorrerse à base de dados elaborada, permitindo escolher rapidamente um novo ventilador, visto que, já se obteve conhecimento prévio do seu comportamento. Para além deste trabalho, na seleção das opções de ventilação para cada motor, houve o cuidado de dar prioridade a ventiladores construídos em ferro fundido e sempre que possível à utilização de ventiladores radiais, uma vez que o seu custo é muito menor, permitindo assim tornar o preço final do motor elétrico ainda mais competitivo. Por conseguinte, a segunda etapa consistiu na implementação industrial de uma nova tampa defletora em ferro fundido, para a gama de motor W22Xd (WPT). Nesta fase, os principais objetivos foram a redução de custos, a padronização visual e melhorias na ventilação do motor elétrico. Por último, a terceira etapa focou-se no desenvolvimento de um novo ventilador axial para a gama W22XdT com o objetivo de aumentar o caudal de ventilação, assim como reduzir o custo do ventilador padrão. Em suma, a realização deste trabalho na WEGeuro deu lugar a vários melhoramentos. É de salientar que, com as alterações efetuadas, é notória a redução de custos na produção, assim como, a redução do tempo despendido pelos colaboradores da WEGeuro nas respetivas atividades. Assim, a entidade acolhedora de estágio melhorou a sua sustentabilidade, tornando-se mais rentável e produtiva.
This project was done in the context of an internship at WEGeuro and it had as its principal objective the improvement of the performance and competitiveness of electrical motors produced at the company. WEGeuro produces essentially electrical motors in specialized areas such as highly explosive environments. This project focused on three principal phases which show the work involved during the six month internship. The first phase had as its objective the creation of ventilation maps of electrical motors. For this purpose, the most suitable and viable ventilators were selected to be used in each electric motor. These were submitted to laboratory tests in order to register their performance so that, in the future, if the ventilation of a motor does notsatisfy the noise and flow requirements, or mechanical losses, the collected data information can be used to quickly select a different ventilator since there is previous knowledge of its performance. Care was also taken to favour ventilators made of cast iron and, whenever possible, the usage of radial ventilators since they are cost-efficient thereby permitting a lower and more competitive final price of the electric motor. The second phase consisted of the industrial implementation of a new fan cover in cast iron for the W22Xd (WPT) motor range. In this phase the principal objective was the reduction of costs, visual conformity and the improvement in the ventilation of the electric motor. The third phase focused on the development of a new axial ventilator for the W22XdT with the objective of increasing the air flow of ventilation and the reduction of the cost of the pattern ventilator. To sum up this project brought several advantages to the company. With the alterations here devised, the reduction of costs in the production and the reduction of time used by the workers of the WEGeuro are evident, therefore improving the company’s sustainability, productivity and profitability.
This project was done in the context of an internship at WEGeuro and it had as its principal objective the improvement of the performance and competitiveness of electrical motors produced at the company. WEGeuro produces essentially electrical motors in specialized areas such as highly explosive environments. This project focused on three principal phases which show the work involved during the six month internship. The first phase had as its objective the creation of ventilation maps of electrical motors. For this purpose, the most suitable and viable ventilators were selected to be used in each electric motor. These were submitted to laboratory tests in order to register their performance so that, in the future, if the ventilation of a motor does notsatisfy the noise and flow requirements, or mechanical losses, the collected data information can be used to quickly select a different ventilator since there is previous knowledge of its performance. Care was also taken to favour ventilators made of cast iron and, whenever possible, the usage of radial ventilators since they are cost-efficient thereby permitting a lower and more competitive final price of the electric motor. The second phase consisted of the industrial implementation of a new fan cover in cast iron for the W22Xd (WPT) motor range. In this phase the principal objective was the reduction of costs, visual conformity and the improvement in the ventilation of the electric motor. The third phase focused on the development of a new axial ventilator for the W22XdT with the objective of increasing the air flow of ventilation and the reduction of the cost of the pattern ventilator. To sum up this project brought several advantages to the company. With the alterations here devised, the reduction of costs in the production and the reduction of time used by the workers of the WEGeuro are evident, therefore improving the company’s sustainability, productivity and profitability.
Description
Keywords
Motor elétrico Tampa defletora Ventilador Mecânica dos fluidos Ansys CFX Ruído Caudal Temperatura Perdas Electric motor Fan cover Fan Fluid mechanics Ansys CFX Noise Air Flow Temperature Losses