H - Electricity – 05 – C
Patent
H - Electricity
05
C
H05C 1/04 (2006.01)
Patent
CA 2269831
An electric screen device 2 for preventing creatures from intruding into a water channel 1, which comprises a pair of opposed electrode assemblies 12, 12 disposed on opposite sides of a water intake channel 1, and a do pulse applying device 13 for applying do pulses between said electrode assemblies 12, 12. In such electric screen device, the product of the peak value of the intensity of an electric field produced between the electrode assemblies 12, 12 by said do pulse applying device 13 and the body length of creatures to be prevented from intrusion into the water channel is not less than 0.1 V, the do pulse applying time is within the range of 2 - 200 msec, and the duty factor of the do pulse is not more than 0.5.
L'invention concerne un écran électrique (2) comprenant une paire d'électrodes (12 et 12) disposées de manière opposée de part et d'autre d'une conduite d'arrivée d'eau (1) et un dispositif (13) servant à appliquer une impulsion de courant continu à travers les éléments (12 et 12) et vérifiant l'entrée d'un corps vivant dans la conduite (1). Le produit de la valeur de crête du champ électrique créé entre les éléments (12 et 12) et la longueur du corps vivant à vérifier est supérieur à 0,1 V. La durée d'application des impulsions de courant continu tombe dans une plage comprise entre 2 et 200 msec et le coefficient d'utilisation des impulsions de courant continu est inférieur à 0,5.
Isawa Yutaka
Maehata Hidehiko
Suzaki Tomohiko
Tamakoshi Daisuke
Tsukahara Masanori
Hitachi Zosen Corporation
Kirby Eades Gale Baker
LandOfFree
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