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Projeto de uma tampa flange para motores elétricos de indução trifásica para atmosferas explosivas
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 7.15 MB | Adobe PDF |
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Abstract(s)
As indústrias relacionadas com atmosferas explosivas (ATEX) estão em constante crescimento, exigindo a procura contínua por melhorias tecnológicas, industriais e logísticas. Setores como o petroquímico e mineração são cruciais para a economia global, pelo que as empresas responsáveis por fornecer os meios para garantir o funcionamento destas indústrias são um dos pontos centrais para garantir a sua estabilidade, nomeadamente o setor de fabrico de motores elétricos, aptos a operar neste tipo de atmosferas. O trabalho desenvolvido surge no
âmbito do desenvolvimento de uma nova gama de motores elétricos habilitados a operar em zonas ATEX, desenvolvida pela empresa WEGeuro S.A.. O principal objetivo consistiu no desenvolvimento do projeto mecânico de uma tampa flange para a nova gama, de modo a permitir aumentar os cenários de utilização dos motores desenvolvidos, dada a possibilidade de esta peça permitir posições de trabalho tanto horizontais como verticais. O foco foi desenvolver uma peça obtida a partir de fundição, em ferro fundido FC-250, de modo a
rentabilizar a sua produção em massa. Seguindo uma metodologia Six Sigma, seguindo o método DMADV, que visa minimizar os defeitos, procurou-se a maior otimização possível do modelo desenvolvido, com validação final por análise numérica, com recurso ao software ANSYS. Como resultado do trabalho desenvolvido, foram garantidos os coeficientes de segurança e foi otimizada a sua forma, obtendo uma redução de peso de cerca de 25%, em relação ao modelo existente. Este produto deverá trazer mais competitividade aos motores desenvolvidos pela WEGeuro, de modo que ganhe um papel de maior relevância dentro das indústrias que operam em áreas ATEX.
Industries related to explosive atmospheres (ATEX) are constantly growing, requiring continuous demand for technological, industrial, and logistical improvements. Sectors such as petrochemicals and mining are crucial to the global economy, and the companies responsible for providing the means to ensure the operation of these industries are one of the key factors in guaranteeing their stability, namely the sector that manufactures electric motors capable of operating in this type of atmosphere. This thesis is part of the development of a new range of electric motors suitable for operation in ATEX zones, developed by the company WEGeuro S.A. The main objective was to develop the mechanical design of a flange endshield for this new range, to increase the use cases of the developed motors, given that this part enables both horizontal and vertical working positions. The focus was on developing a cast part, obtained using FC-250 cast iron, to make its mass production profitable. Following a Six Sigma methodology, using the DMADV method, which aims to minimize defects, the greatest possible optimization of the developed model was sought, with final validation by numerical analysis, resorting to ANSYS software. As a result of the work carried out, safety coefficients were guaranteed and its shape was optimized, achieving a weight reduction of around 25% compared to the existing model. This product should bring more competitiveness to the motors developed by WEGeuro, so that it gains a more relevant role within industries operating in ATEX areas.
Industries related to explosive atmospheres (ATEX) are constantly growing, requiring continuous demand for technological, industrial, and logistical improvements. Sectors such as petrochemicals and mining are crucial to the global economy, and the companies responsible for providing the means to ensure the operation of these industries are one of the key factors in guaranteeing their stability, namely the sector that manufactures electric motors capable of operating in this type of atmosphere. This thesis is part of the development of a new range of electric motors suitable for operation in ATEX zones, developed by the company WEGeuro S.A. The main objective was to develop the mechanical design of a flange endshield for this new range, to increase the use cases of the developed motors, given that this part enables both horizontal and vertical working positions. The focus was on developing a cast part, obtained using FC-250 cast iron, to make its mass production profitable. Following a Six Sigma methodology, using the DMADV method, which aims to minimize defects, the greatest possible optimization of the developed model was sought, with final validation by numerical analysis, resorting to ANSYS software. As a result of the work carried out, safety coefficients were guaranteed and its shape was optimized, achieving a weight reduction of around 25% compared to the existing model. This product should bring more competitiveness to the motors developed by WEGeuro, so that it gains a more relevant role within industries operating in ATEX areas.
Description
Keywords
Electric motors Explosive atmospheres Flange endshield Casting Finite element method Motores elétricos Atmosferas explosivas Tampa flange Fundição Método de elementos finitos