Keywords
MII-E (H62-electrotecnica), Ventilación, tuneladora, variador de frecuencia, Proyecto Follo Line, gases contaminantes, Ventilation, Tunnel Boring Machine, frequency converter, Follo Line Project, pollutant gases
REGULACION DE LA VENTILACION DE LAS TUNELADORAS EN EL PROYECTO FOLLO-LINE
Abstract
El proyecto Follo Line consiste en un tren de alta velocidad que va a unir Oslo con la ciudad de Ski, situada al sur. Está diseñado para alcanzar hasta 250 km/h y 22 km de longitud. Este proyecto está siendo llevado a cabo por tuneladoras (TBMs) que constan de una ventilación primaria (siempre fija, no se puede variar) y una ventilación secundaria (variable).
El proyecto constaría sobre la instalación, dimensionamiento de los equipos, Ia instalación eléctrica y el presupuesto de un sistema para regular Ia ventilación secundaria en las tuneladoras. Actualmente, estas tuneladoras tienen un ventilador con arranque estrella triangulo que funciona de 0 a 100.
Para solucionar este problema, de entre todas las opciones posibles, se ha elegido la instalación de un variador de frecuencia para regular la potencia del ventilador y el caudal de aire. A parte de estas ventajas, también se obtienen otras como un importante ahorro energético, un arranque mucho más suave que el utilizado en motores de arranque "estrella-triángulo", todo con una amortización visible en pocos meses.
Además, al instalar el variador de frecuencia, el valor de los gases contaminantes en las tuneladoras se mantiene en sus límites debido a la aportación del caudal necesario según las diferentes situaciones que se pueden dar en la tuneladora.
The Follo Line project consists of a high-speed train that connects Oslo with the city of Ski, located in the south. It is designed to reach up to 250 km/h and 22 km of length. This project is being carried out by Tunnel Boring Machines (TBMs) that have primary ventilation (permanent ventilation) and secondary ventilation (variable ventilation). The project will consist of the installation, the sizing of the equipment, the electrical installation and the budget of a system to regulate the secondary ventilation in the Tunnel Boring Machines. Currently, these TBMs have a fan with a "star-delta" start that works from 0 to 100. To solve this problem, the installation of a frequency converter was selected to regulate the power of the fan and the air flow rate. Apart of these advantages, it can also be used as an energy saving option, a much smoother start than that used in "star-delta" motors, all with visible amortization in a few months. In addition, when installing the frequency converter, the value of the polluting gases in the Tunnel Boring Machines is maintained in its limits due to the contribution of the necessary flow according to the different situations in the TBMs.
The Follo Line project consists of a high-speed train that connects Oslo with the city of Ski, located in the south. It is designed to reach up to 250 km/h and 22 km of length. This project is being carried out by Tunnel Boring Machines (TBMs) that have primary ventilation (permanent ventilation) and secondary ventilation (variable ventilation). The project will consist of the installation, the sizing of the equipment, the electrical installation and the budget of a system to regulate the secondary ventilation in the Tunnel Boring Machines. Currently, these TBMs have a fan with a "star-delta" start that works from 0 to 100. To solve this problem, the installation of a frequency converter was selected to regulate the power of the fan and the air flow rate. Apart of these advantages, it can also be used as an energy saving option, a much smoother start than that used in "star-delta" motors, all with visible amortization in a few months. In addition, when installing the frequency converter, the value of the polluting gases in the Tunnel Boring Machines is maintained in its limits due to the contribution of the necessary flow according to the different situations in the TBMs.
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