A pump arrangement for pumping liquids including gases from great depths.

摘要

The performance of a double-cone device (1) is increased, not only by moving the gap or inlet RSHQLQJV DVKRUWGLVWDQFHLQWRWKHH[LWFRQH Z EXWDOVREPDNLQJWKHFRQLFLW3 (55) of the so-IRUPHGVPDOOGLIIXVHUOHVVWKDQWKHFRQLFLW2 (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. (FIG.)4