Subsea excavation and suction device
AssigneeFossura AS
InventorsTom Jacobsen, Halvor Snellingen
Life of this patent
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Abstract
Subsea excavation and suction device includes a suction head with an inlet opening at an outer, free end and an outlet opening connected to a suction hose arranged at a distance from the inlet opening. The suction head is mounted on a hydraulic controller arm and has at the inlet opening provided with mechanical and hydraulic means to disintegrate solid material (sediment). The hydraulic means includes a number of jet nozzles, while the mechanical means includes bars. The cross-sectional area of the inlet opening is larger than the cross-sectional area of the outlet opening.
Claims23
Subsea excavation and suction device for complete submersion comprising a suction head (1) that is movably attached to a hydraulic controller arm (13) and has an inlet opening (3) at a free, outer end and an outlet opening (12) attached to a suction hose (10) arranged at a distance from the inlet opening (3), said suction head (1) having means for disintegration solid material and having a larger cross-sectional area at the inlet opening (3) than at the outlet opening (12), characterized in that the suction head (1) comprises both hydraulic and mechanic means to disintegrate solid material, where the hydraulic means comprises a number of primary jet nozzles arranged along the edge (6) surrounding the inlet opening (3) and having fluid communication with a source of pressurized liquid while the mechanic means comprises at least one bar (4,5) dividing the inlet opening (3) into inlet sections (3i), said at least one bar being shaped and dimensioned to effect a mechanic disintegration of solid material (sediment).
Dependencies are inferred from the claim text.