摘要:
The invention relates to an autonomous dredging vehicle for dredging a dam reservoir (4), which dredging vehicle comprises: - a floating body (6), like a pontoon; - propelling means (7,8) for propelling the floating body through the dam reservoir; - a suction head (13) arranged to a first end of a first hose (12) for sucking up slurry, wherein the other end of the first hose is arranged to the floating body; - a discharge pipe (15) for downward hanging arrangement to outside of the dam; - a second hose (14) arranged with one end in fluid connection to the discharge pipe and with the other end arranged to the floating body and in fluid connection with the first hose; - a controllable dosing means (38,39) for controlling the flow rate of slurry (40) being discharged by the discharge pipe; - a density and flow sensor (10) arranged in the fluid path between the suction head and the discharge pipe; - control means (42) for controlling the propelling means to move the floating body autonomously over the reservoir and for controlling the controllable dosing means such that the flow rate of slurry being discharged by the discharge pipe remains below a preset threshold.
摘要:
A seabed trenching plow has a chassis, a sled and a towing assembly. The towing assembly has a pair of wings extending laterally from each side of the chassis. The wings are aligned on an axis transverse to the chassis and adapted for connection to a towing line. The transverse axis is forward of the center of gravity of the plow and rearward of the sled, affording an over the stern releasable and retrievable trenching plow of sufficient weight and strength to excavate a three meter trench in a single pass. To assess the protective capabilities of the trench, a threshold signal indicative of a desired composition of seabed-trench soil is compared with a real-time data signal indicative of the actual to produce an alarm signal when the real-time data signal is not protective-capability compliant with the threshold signal.
摘要:
The invention relates to a measurement device for performing measurements on a mixture of water and collected material. The measurement device comprises a pipe section through which the mixture can be guided, the pipe section comprising a window. The measurement device comprises an image capturing device arranged to capture an image of the collected material through the window. The image can be used to determined a grain size distribution of the collected material, which can be used to optimize the collecting process.
摘要:
Apparatus for removing solids such as sludge from a liquid reservoir comprising a float, a suction head assembly carrying a pump, and elongated guides interconnecting the suction head assembly and float. The float also carries a winch for raising and lowering the suction head assembly. The guides are slidably engaged with the float and serve to indicate the depth of operation of the suction head assembly.
摘要:
The invention relates to a method for determining a volume (Vs) of a settled bed in a mixture in a loading space (1). The mixture comprises a settled bed and a mixture soup above the settled bed. The method comprises: a) determining a mixture height (hh) of the mixture in the loading space, and determining a mixture volume (Vh) of the mixture in the loading space on the basis of the mixture height (hh), b) determining the mass (m) of the mixture in the loading space (1), c) determining a density of the settled mixture (ps), d) determining a density of the mixture soup (pimi), and e) determining the volume (Vs) of the settled bed using the formula Vs = (m - Vh Pmi) / (Ps - Pmi).
摘要:
The invention relates to a device (1) for displacing bottom material (26) under water. The device comprises a frame (2) which is displaceable under water by being coupled to a vessel (17). The frame (2) comprises a tubular liquid container (3) with outflow openings (7) for a liquid directed toward the bottom (22), wherein the outflow openings (7) are placed such that during use the liquid is injected into or against the bottom (22). The device further comprises suction means (5a, 5b) driven by means of a drive (18) for supplying the liquid under pressure from a source to the container (3), wherein the suction means are situated under water during use, in addition to a pusher member (13) bounded on a base part thereof by a cutting edge (14). The invention also relates to a method for displacing bottom material under water by making use of a device according to the invention. The invented device can be utilized more flexibly than the existing device and is moreover more efficient.
摘要:
The invention relates to a device (1) for dredging soil material under water. The device comprises a pontoon (6), provided with an excavator (10) adapted to excavate soil under water, and actuating means (7,16,17,18,19) adapted to control the motion of the pontoon and/or the excavator. The device further comprises first monitoring means (30,35) adapted to monitor the position of the excavator; second monitoring means (31) adapted to monitor the forces experienced by the excavator; and computing means (33) adapted to compute, on the basis of data obtained from the first and the second monitoring means, control signals for the actuating means. The invention also relates to a method for dredging soil material under water, using the invented device, and to a computer program comprising program instructions that when loaded into a computer carries out the method.