Double-cone device and pump

Details Double-cone device and pump Double-cone device and pump

E - Fixed Constructions

21

B

E21B 43/12 (2006.01) E21B 31/00 (2006.01) F04F 5/10 (2006.01) F04F 5/44 (2006.01) F04F 5/46 (2006.01)

Patent

CA 2440894

The performance of a double-cone device (1) is increased, not only by moving the gap or inlet openings (22) a short distance into the exit cone (47), but also by making the conicity .theta.3 (55) of the so-formed small diffuser less than the conicity .theta.2 (109) of the remaining part (53) of the exit cone. Double cone units (7, 60), particularly the ones with this improved diffuser, may be used in pump installations (1, 60), like well-pumps (1), where liquids must be pumped from great depths.

Selon l'invention, l'efficacité d'un dispositif à cône double (1) est augmentée, non seulement grâce au déplacement des ouvertures d'espacement ou d'entrée (22) sur une courte distance à l'intérieur du cône de sortie (47), mais également en rendant la conicité .theta.¿3? (55) du petit diffuseur ainsi formé inférieure à la conicité .theta.¿2? (109) de la partie restante (53) du cône de sortie. Les unités à cône double (7, 60), en particulier celles dotées de ce diffuseur amélioré, peuvent être utilisées dans des installations de pompage (1, 60), telles que des pompes de puits (1), où des liquides doivent être pompés à des profondeurs importantes.

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