TECNOLOGIA PARA EL CONTROL DE HORNOS

lunes, 12 de abril de 2010

los instrumentos de regulacion y control forman parte integral de los equipos de procesos de la industria en horno por ejemplo de tunel la carga es transportada en vagonetas a una velocidad determinada y las temperaturas se regulan basicamente en la zona de coicion donde se encuentran situados los quemadores de combustible y los valores deseados en la zona de precalentamiento se alcanza mediante en la
circulacion de aire caliente procedente de la zona de enfriamiento

la medida de temperatura se efectua con termopares de cromel-alumel o de platino platino-rodio, segun sean las temperaturas alcanzadas y con fundas ceramicas de mullita silice-aluminica o de aluminio recristalizado

los reguladore actuan sobre una valvula de solenoide, o bien sobre valvulas neumaticas dotadas de servomotor electroneumatico o digitoneumatico
la zona de coccion puede dividirse en varias zonas de control y cada una suele estar regulada independientemente por un regulador todo-nada, o flotante, o bien por un regulador proporcional o proporciona mas integral o proporcional mas integral mas derivado

el horno tunel es tambien es importante la regulacion del tiro al mantener una distribucion uniforme de temperaturas en cada seccion del horno los dos tomas del controlador de trio se conectan en lados opuestos en la entrada o salida de la zona de encendido que es la posicion que usualmente da los mejores resultados

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