At the end of the year, good news came from Dalian Marine Diesel Engine Factory - the domestic first-made 7RTA72UB mainframe was successfully delivered at the factory recently. The successful inspection of the aircraft marks that Dalian Shipai has taken a new step in the manufacturing technology and production capacity of high-power diesel engines.
The 7RTA72UB mainframe will be installed on a 2600TEU container ship built by Xiamen Shipbuilding for the German shipowner. In order to ensure that the mainframe is delivered as planned, the Dalian Shipyard Plant is organized and dedicated, and engineers and construction personnel use their brains during the construction process to make a number of design and process improvements. For example, if the local supporting capacity is insufficient and the price of the foreign supporting parts is too high, they will change the original three-cylinder cylinder of the patent company to a single cylinder; for the unevenness of the steel plate and welding deformation, etc., to prevent the gear box door and machine The problem of leaking oil from the door and the explosion-proof door is eliminated by the method of welding and reinforcing the frame and finally machining and leveling.
Through the efforts of Dalian Shipyard, the components such as the cylinder liner wear ring, gas water separator, cam and sealing ring of the main engine have been localized, which not only reduces the manufacturing cost but also shortens the machine cycle. In addition, in order to meet the requirements of the shipowners, they designed and modified the supercharger layout, scavenging air box, exhaust pipe and piping and electrical components based on the original design drawings of the supercharger, and obtained the approval of the patent company. It not only saves design costs, but also improves design capabilities.
The mainframe assembly and the platform test show that the modification design of the Dalian Shipyard in the 7RTA72UB mainframe is reasonable, the supercharger and the main engine are well matched, and all technical indicators meet the design and use requirements, and will be sent to Xiamen Shipbuilding Heavy Industry on the ship. .
Auxiliary machines--Crusher,Shredder,Mixer,etc
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