| 摘要 |
The invention relates to a device and to a method for conveying liquid. The device comprises an outer pipe (110), a first conveying unit (300) having an inlet (303) and an outlet, wherein the first conveying apparatus is attached below the outer pipe, an inner pipe (109) having a smaller diameter than the outer pipe, wherein the inner pipe is arranged within the outer pipe and defines an outer conveying space (105) between the inner pipe and the outer pipe, at least one further conveying unit (200) having an inlet (203) and an outlet, wherein the at least one further conveying unit is arranged in the interior of the inner pipe, and wherein the conveying units are connected in parallel hydraulically and the first conveying unit is preferably arranged below the at least one further conveying unit. |
