Siemens drives enable dredging to 120 meters
The Malaysian shipping company Inai Kiara SDN BHD has unveiled the world’s biggest suction dredger. To allow use in water depths of up to 120 meters and ensure that all the components could be accommodated within the constrained dimensions of the ship’s hull, the shipbuilder opted to use drive technology from Siemens.
Almost 200 meters in length and with a loading capacity of over 30,000 cubic meters, the new Inai Kenanga dredger belonging to the shipping company Inai Kiara SDN BHD is one of the world’s biggest hopper suction dredgers. This type of ship is used for mining raw materials or for deepening and widening waterways.
The dredged material is suctioned off the water bed using two lateral suction pipes and pumped into the hopper. The water contained in the material is separated and returned to the waterway. Using its standard equipment, the hopper suction dredger is able to reach depths of up to 35 meters. With the aid of extended trail pipes and additional pumps, it is capable of reaching depths as great as 120 meters.
Flender gearboxes for maximum output
The Inai Kenanga is fitted with a double engine system which drives the propellers and suction pump systems simultaneously. Two switchable GJZ 2250 type dredger gearboxes from Siemens were used for the main pump.
Because their three switchable gear stages enable the output speed to be adjusted in line with the changing operating conditions of the driven pumps, these Flender gearboxes between the motor and pump allow the pumps to operate at maximum suction output.
As a result, both suction from different depths and discharge of the load can take place using just a single drive. For the discharge process, the pumps can additionally be switched in series. When discharging loads, two jet pumps with electric motors and type G1EE 630 pump gearboxes are optionally also available.
The two large gearboxes, each weighing over 90 tons, are driven by two MAN series 12V48/60 main engines with a total output of 26,500 kilowatts. Type GUCQ 1470 propulsion gearboxes are arranged behind the main engines. These are used for driving the hopper dredger and are designed for a full engine output of 13,250 kilowatts each.
Space-saving complete solution
The challenge inherent in designing the complete drive system was the need to accommodate it in a restricted space. Siemens rose to the challenge by coming up with a highly space-saving design for the gearbox. The layout selected also permits easy maintenance of the hydraulic couplings mounted at the back. «
Siemens Flender Gear Units
Communications and Government Affairs
Internal and External Communications
Gleiwitzer Str. 555
90475 Nuremberg, Germany
Tel.: +49 (0)911- 895 7947
Ursula Lang | Siemens MediaService
Integrating One’s Sights on the Factor of 10: “futureAM – Next Generation Additive Manufacturing”
26.10.2018 | Fraunhofer-Institut für Lasertechnik ILT
BladeFactory research project: Quicker rotor blade production and a higher quality result
12.10.2018 | Fraunhofer-Institut für Windenergiesysteme IWES
Innsbruck quantum physicists have constructed a diode for magnetic fields and then tested it in the laboratory. The device, developed by the research groups led by the theorist Oriol Romero-Isart and the experimental physicist Gerhard Kirchmair, could open up a number of new applications.
Electric diodes are essential electronic components that conduct electricity in one direction but prevent conduction in the opposite one. They are found at the...
Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.
Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
21.11.2018 | Life Sciences
21.11.2018 | Power and Electrical Engineering
21.11.2018 | Life Sciences