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Pan flute overflow system

A technology of overflow and overflow pipe, applied in the field of overflow system, which can solve the problems of adverse environmental impact and reduce the effective delivery capacity of overflow

Active Publication Date: 2021-06-15
IHC HOLLAND NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Settling of this mixture can then have adverse effects on the local environment
Air in the flow also causes drag in the overflow, reducing the effective delivery capacity of the overflow

Method used

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  • Pan flute overflow system
  • Pan flute overflow system
  • Pan flute overflow system

Examples

Experimental program
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Embodiment Construction

[0033] figure 1 A Trailing Suction Dredger ("TSHD") 10 is shown during a dredging operation. The trailing suction dredger 10 sucks a mixture of water and solid particles through a suction pipe 12 . This mixture is then delivered to a hopper (not shown) in THSD 10 . Excess liquid in the hopper overflows, and due to the mixing of air with the overflow, the vertical orientation of the overflow, and the velocity and total flow causing the overflow water to mix with air, a plume 14 forms.

[0034] The plume 14 can have a detrimental effect on the native marine biotope because it reduces the light entering the body of water. In addition, in some cases, sedimentation particles kill bottom life, and the suspension can reduce the ability of microorganisms to thrive. Air bubbles in the flow also cause drag in the overflow, reducing the effective delivery capacity of the overflow. Creating an adjustable overflow to control flow into the overflow and through the overflow's head can he...

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PUM

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Abstract

An overflow system (20) for a hopper dredger (10), the overflow system comprising an overflow pipe (22); adjacent to and substantially parallel to the overflow tube. A plurality of pipes (26a-26e) have inlets (28a-28e) at different heights for absorbing water heads from the hopper (18). A plurality of conduits (26a-26e) are fluidly connected to the overflow pipe (22) at a point downstream of the inlet (28a-28e).

Description

technical field [0001] The present application relates to an overflow system for a hopper dredger, a vessel comprising an overflow system, an overflow system add-on, a method of forming an overflow system and a method of flowing a liquid through the overflow system. Background technique [0002] A trailing suction dredger ("TSHD") is a vessel that can be used for dredging at sea or in open water. TSHDs typically use a suction tube, one end of which can be lowered to the sea bed and used to pick up solids mixed with water, such as sand, sludge, silt or sediment. The lower end of the suction pipe can be provided with a water suction head or a rake head. The solid material mixed with water is pumped into the hopper of the dredger through the suction pipe. While in the dredge bucket, the velocity of the mixture is reduced, and this velocity reduction allows components suspended in the mixture to settle. Excess water is then overflowed from the hopper by overflow to allow more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F7/04E02F7/06
CPCE02F7/065E02F7/04B01D21/2444E02F3/945
Inventor 沃特·贝杰布拉姆·阿德里安乌斯·沃尔瑟鲁斯·范·斯帕恩东克
Owner IHC HOLLAND NV