Dredge Yard

Revived ball joint design delivered to Van Oord

Press release   •   Oct 23, 2014 12:46 GMT

Dredge Yard has successfully delivered to Van Oord several heavy duty dredge ball joints for the use on discharge pipe of 1000 mm diameter. These dredge ball joints will be used in the Gulf region, which is experiencing exponential growth in infrastructural projects and marine structures.

Dredge Yard with its ability to provide solutions for the engineering problems, has been continuously working over the past years on the design of the dredge ball joint, a major component that has been used for the dredgers for the past 30 years without making any change for improving its efficiency and safety in operations. A number of design improvements, calculations, FEA stress analysis, and CFD simulations, have resulted into an energy efficient, safe, robust and environmentally friendly dredge ball joint.

Dredge Yard has revived one of the designs of past which was not given high importance as no serious CFD studies and research were done at that time. This concept consists of a concave liner instead of the conventional straight pipe in the ball in order to lower resistance in the flow while tilting.

The CFD simulation comparing the concave ball liner ball joint and straight pipe ball joint has confirmed that there is less pressure drop using concave ball liner ball joint. The following conclusions were made after results,.

• The concave liner ball joint in tilted position has 67% less pressure drop than the straight pipe ball joint in tilted position.

• This pressure distribution is aligned with the velocity.

• Corner vertices are seen due to sudden change in area of flow while tilting.

This CFD simulation shows that there will be less flow resistance, less pressure drop and load on the pump, increasing productivity and resulting in less power consumption.

"This project was challenging. Firstly, it was new design. Second, it had a very challenging delivery time. But with our dedicated team, we produced and delivered them on time. Van Oord’s representatives participated in the quality inspection as well for the dynamic test, for a high pressure of over 30 bars. The results were very satisfying." said Operations Manager, Michel Debo.

Beside this, Dredge Yard Makina is preparing for another dynamic test for a different project for the heavy duty ball joint 900 needed by a customer based in the Middle East.

Dredge Yard delivers Cutter Suction Dredgers, Trailing Suction Hopper Dredgers, mining equipment and dredging components needed for the dredgers and dredge pipe lines. All dredge and mining components are Designed, Engineered, Manufactured, Inspected and Tested by Dredge Yard's facilities. 

Dredge Yard is located in The United Arab Emirates, The Netherlands, and The Republic of Turkey. Dredge Yard is dedicated to the market of dredging and mining components, equipment and dredging and mining technology.      

Dredge Yard's mission is to deliver reliable, high quality and cost effective solutions for transport of water, sand and slurry by using the latest technologies in design, simulation, testing and manufacturing.       

Dredge Yard consists of a dedicated team from different countries aiming to design the best dredge and mining components and equipment to ensure on time delivery, cost effective production, low maintenance, low operation cost and high grade of reliability of the products.

Over the years Dredge Yard has proven itself as a reliable supplier of many dredge and mining components to many dredge contractors and mining operators world wide. It has delivered many dredge and mining components to several dredgers and improved the productivity and functionality of existing equipment.