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As instalações da Continental – Indústria Têxtil do Ave S.A. datam de 1948 pelo que a sua instalação tem vindo a sofrer constantes evoluções ao longo do tempo. O aumento da competitividade do mercado leva à necessidade de constantes ajustes e ao aumento da capacidade de produção. Com o aumento constante das instalações, a unidade fabril encontra-se neste momento numa situação limite em termos de espaço para a produção, sendo necessário olhar para a forma como estão distribuídos os equipamentos com vista a um ganho de espaços. Através de um estudo de viabilidade entre vários cenários possíveis, escolheu-se fazer a relocalização de um posto de transformação para a zona de um outro posto de transformação. Sendo necessário perceber que intervenções eram necessárias fazer e que implicações traria para a instalação. Por fim, para esta intervenção foi feita uma ordem de trabalhos com todas as intervenções necessárias. A ordem de trabalho tem alguns requisitos especiais devido à laboração continua da empresa. A definição dos requisitos necessários bem como a ordem de trabalho necessária para efetuar uma ação que poderá pôr em causa o funcionamento da totalidade da fábrica são um importante passo para que seja possível o avanço das operações. Em simultâneo, para colmatar o excesso de carga térmica resultante da contante compactação de máquinas produtivas, foi estudada uma forma de diminuir este efeito. Como tal, foi avaliada a possibilidade de aumento de tensão dos equipamentos produtores de energia térmica, de forma a baixar as correntes causadoras de perdas por efeito de Joule. Os resultados foram satisfatórios, devido à descida de temperatura dos motores, e ao decréscimo da potencia. O estudo foi efetuado utilizando dois equipamentos com a perspetiva de replicar para os restantes quarenta e um equipamentos com características semelhantes. Este procedimento poderá trazer inúmeras vantagens como: melhoria da qualidade de trabalho dos operadores, melhoria no prolongamento da vida útil dos equipamentos, e diminuição dos custos de produção.
The Continental – Indústria Têxtil do Ave S.A facilities date from 1948 and they have been subject of constant evolution. The increase of the market’s competitivity makes continual adjustments and the increase of production capacity constant necessities. With the continual increase of the facilities, the industrial unit has reached a limit situation regarding the space for production. Thus, it is important to understand the way the equipments are distributed in order to obtain some free space. Through a viability study between several possible scenarios, the relocation of a substation to the place of another transformation substation was chosen. Hence, it was necessary to understand which interventions were needed and which implications they would bring. Finally, the intervention was performed according to a work order with all the needed interventions. This work order had some special requirements because of the continuous working flow of the company. The definition of the necessary requirements as well as the definition of the work order, needed to perform an action that may threaten the functioning of the entire factory, are important steps for the development of the operations. Simultaneously, to make up for the excess of the thermal charge that resulted from the constant compaction of the production machines, a way of decreasing this effect was studied. Thus, the possibility of increasing the tension of the equipments that produce thermal energy was studied in order to decrease the currents that caused Joule Effect’s losses. The study was performed using two equipments to further replicate it in the other forty-one that have similar characteristics. This procedure may bring several advantages such as: improvement of the work quality of the workers, increase of the life span of the equipment and decrease in the production costs.
The Continental – Indústria Têxtil do Ave S.A facilities date from 1948 and they have been subject of constant evolution. The increase of the market’s competitivity makes continual adjustments and the increase of production capacity constant necessities. With the continual increase of the facilities, the industrial unit has reached a limit situation regarding the space for production. Thus, it is important to understand the way the equipments are distributed in order to obtain some free space. Through a viability study between several possible scenarios, the relocation of a substation to the place of another transformation substation was chosen. Hence, it was necessary to understand which interventions were needed and which implications they would bring. Finally, the intervention was performed according to a work order with all the needed interventions. This work order had some special requirements because of the continuous working flow of the company. The definition of the necessary requirements as well as the definition of the work order, needed to perform an action that may threaten the functioning of the entire factory, are important steps for the development of the operations. Simultaneously, to make up for the excess of the thermal charge that resulted from the constant compaction of the production machines, a way of decreasing this effect was studied. Thus, the possibility of increasing the tension of the equipments that produce thermal energy was studied in order to decrease the currents that caused Joule Effect’s losses. The study was performed using two equipments to further replicate it in the other forty-one that have similar characteristics. This procedure may bring several advantages such as: improvement of the work quality of the workers, increase of the life span of the equipment and decrease in the production costs.
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Instalações elétricas Subestação Posto de transformação Rede de média tensão Torcedores Motores de indução trifásico Efeito de Joule Electrical installation Substation Transformer substation Medium voltage grid Twisters Three-phase cage induction motors Joule effect