Method for detecting leakproofness of side suction port of trailing suction ship

Abstract

The invention relates to a method for detecting the leakproofness of a broadside suction port of a trailing suction ship, a pressure gauge is mounted at the bottom of a pipeline between the broadside suction port and a suction port gate valve, and different detection methods are adopted for detecting the leakproofness of the broadside suction port under the conditions of positive pressure and negative pressure borne in the pipeline at the broadside suction port. According to the invention, only the water suction pump and equipment of the trailing suction ship are utilized, docking or diving operation is not needed, and shore-based support is not needed, so that sealing detection of the side suction port of the trailing suction ship under two conditions of positive pressure and negative pressure can be realized; the pressure relief rate index is used as an evaluation index of the leakproofness of the broadside suction port, the pressure relief rate index is easy to calculate and obtain, and a scientific evaluation method is established for leakproofness detection of the broadside suction port; the detection method is accurate, high in operability, high in detection efficiency and high in safety, the trailing suction dredger can detect the suction port on the other side during single-rake construction, and construction and detection of the trailing suction dredger are achieved.

Description

technical field [0001] The invention belongs to the technical field of dredging engineering, in particular to a method for detecting the tightness of side suction port of a drag suction ship. Background technique [0002] Rake suction boats generally have two rake pipes arranged on both sides of the ship’s side. The end of the harrow pipe is equipped with a harrow head. The harrow suction boat uses the harrow head to break the soil during navigation. The harrow pipe is lowered into the water through the harrow pipe hanger. The harrow pipe elbow The suction port is docked with the side suction port of the hull, and a rubber ring is provided on the docking surface to ensure the sealing of the suction port, forming a closed delivery pipeline from the rake head to the mud pump, such as figure 1 . There are two types of mud pumps for trailing suction boats: in-cabin pumps and rake arm pumps. The in-cabin pumps are located in the hull pump room, and the rake arm pumps are install...

AI Technical Summary

Problems solved by technology

[0003] In the actual construction process, the joint between the suction port of the rake pipe elbow and the side suction port of the hull is often not tightly sealed due to wear, corrosion and other reasons. Leakage will occur in the tube at the side suction port under negative or positive pressure. It will cause clean water to flow into the pipe, causing the mud to be diluted, and the production efficiency of the dragging suction ship will decrease. When the pressure is positive, the mud will leak, causing water pollution and a decrease in the flow rate into the cabin.

[0004] During the construction process of the harrowing suction ship, the side suction port is always below the water surface. When the joint between the harrow pipe elbow suction port and the hull side suction port is not tightly sealed, the severity of the problem can only be judged by experience or docking inspection. Lack of scientific testing and evaluation methods that can be implemented on the construction site, and cannot provide a scientific basis for ship construction and maintenance

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