Capping device of conduit mouth of ship body

Abstract

The invention relates to a capping device of a conduit mouth of a ship body, which comprises a cylinder body 1, cover plates 2 and a cover plate driving device 3, wherein the 2-6 cover plates 2 which can realize 90-degree rotation are symmetrically distributed on the vertical circular section close to a cylinder mouth of the cylinder body 1 as far as possible, in the cylinder body 1, along the central line of the circular section, the rotation axial lines of the cover plates 2 are parallel to the central line of the circular section, and all the cover plates can just seal the vertical circular section of the cylinder body when the cover plates are closed; a driving rotating shaft 4 and a driven rotating shaft 5 are connected at the two ends of each cover plate 2, the driving rotating shafts 4 and the driven rotating shafts 5 are respectively fixed on the cylinder body 1 through bearing seats 6, the axial lines are superimposed, and the driving rotating shafts and the driven rotating shafts can rotate along the axial lines respectively; and the cover plate driving device 3 is fixed on the cylinder body 1 and can drive the driving rotating shafts to drive the cover plates 2 to realize the 90-degree rotation. The capping device can reduce acoustic noise generated by the open conduit mouth and improve the working conditions of a ship-borne acoustic detection system; and the structure is simple and reliable, the conventional relay control can be adopted, the operation and the maintenance are convenient, and the cost is low.

Description

technical field [0001] The invention relates to a capping device for a channel opening of a hull. Background technique [0002] With the development of modern ship technology, more and more ships are equipped with dynamic positioning systems with lateral propulsion devices, and some ships equipped with lateral propulsion devices need to open circular channels below the waterline on the side of the hull. A side thrust propeller is installed in the channel. The channel opening of the side thrust channel of the previous ship is open and may have a grille to block debris. When the ship moves up and down due to wave motion, a large number of air bubbles will be generated in the open channel opening. These Air bubbles will generate a large amount of acoustic noise of various frequencies. If various acoustic detection devices are also installed on the same ship, the above-mentioned acoustic noise will seriously interfere with the work of the acoustic detection device, greatly red...

AI Technical Summary

Problems solved by technology

The hydraulically driven hull slot opening capping device has a complex structure, is prone to failure, and is difficult to measure and control the system

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