Adjustable nozzle assembly for a bow jet device for a trailing suction hopper dredger

Through the hydraulic steering system and dynamic control of the rainbow blowing adjustable nozzle assembly of the trailing suction hopper vessel, the problem of fixed injection point in the traditional bow spraying process is solved, and the precise control of the injection point and the improvement of construction efficiency are achieved.

CN120394259BActive Publication Date: 2025-10-17CCCC GUANGZHOU DREDGING CO LTD
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Patent Information

Application Number
CN202510913283.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-03
Publication Date
2025-10-17
Estimated Expiration
2045-07-03

AI Technical Summary

Technical Problem

The traditional bow spray process has a fixed nozzle angle, resulting in a fixed spray landing range, which makes it difficult to meet the project flatness quality requirements. Frequent ship movement makes operations complex and inefficient.

Method used

The rainbow blowing adjustable nozzle assembly of the trailing suction hopper ship is adopted. Through the hydraulic steering system and dynamic control of the nozzle assembly, the omnidirectional adjustment of the nozzle and the continuous adjustment of the nozzle opening are realized. Combined with the meshing transmission of the worm and worm gear, the injection angle, flow rate and range are coordinated and controlled.

Benefits of technology

Precise control of the spraying landing point is achieved, the coverage area of ​​a single operation is increased by more than 40%, and the flatness error is controlled within ±5cm, which significantly reduces the rework rate and improves construction efficiency and results.

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Abstract

The application discloses a kind of adjustable nozzle assembly and bow jet device and method of rainbow blowing of dredger, belong to bow jet technical field.A kind of adjustable nozzle assembly of rainbow blowing of dredger, including nozzle part and the ball joint for connecting nozzle part and bow jet pipeline on ship, ball joint includes: lower support frame, lower support frame one end is connected with bow jet pipeline by first flange;Upper support frame, upper support frame is fixedly connected in one side of lower support frame and is enclosed with lower support frame to form spherical groove;Movable ball tube, movable ball tube includes fixedly connected reducing pipe and ball, ball is movably connected in spherical groove, reducing pipe is connected with nozzle part by second flange at the end away from ball;The application can flexibly change mud drop point by dynamically adjusting nozzle jet range, significantly expand effective operation range, accurately control drop point distribution, effectively avoid the uneven surface of filling area, meet the flatness quality requirement, reduce the frequent displacement of ship required for adjusting drop point, greatly improve construction efficiency.
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