Diesel propulsion system for double-engine, single-propeller and double-speed ratio ship

Abstract

The invention belongs to the field of ship propulsion systems and discloses a diesel propulsion system for a double-engine, single-propeller and double-speed ratio ship. The diesel propulsion system for the double-engine, single-propeller and double-speed ratio ship is provided with two diesel engines; local control boxes are correspondingly arranged at input ends of the two corresponding diesel engines; digital electronic speed regulators with parallel operation functions are mounted on the local control boxes; the two digital electronic speed regulators are linked with each other through a communication wire, and a master-slave relation is set between the two digital electronic speed regulators; output ends of the two diesel engines both communicate with a same gearbox; the gear box is of double-input single-output mode and and is provided with double reduction ratio; a propeller is connected to an output end of the gearbox; the propeller adopts a fixed pitch propeller; the two digital electronic speed regulators both communicate with a driving console; and the driving console adopts a single handle operation head. According to the diesel propulsion system for the double-engine,single-propeller and double-speed ratio ship, the operation conditions of the diesel engines in the ship operation state are improved, the reliability of the propulsion system is enhanced, the safetyof the propulsion system is enhanced, the service life of the propulsion system is prolonged, and the fuel and engine oil consumption rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of complete sets of marine diesel propulsion systems, and mainly relates to a marine diesel propulsion system with two engines, one propeller and two speed ratios. Background technique [0002] Most traditional marine diesel propulsion systems use a single-engine, single-propeller, and single-speed ratio propulsion system, which mainly includes a diesel engine, a gearbox with clutch function, a tail shaft, a set of propellers, a side control box, and a driving control box. The diesel engine drives the gearbox to rotate after being aligned with the gearbox at a low speed, and the gearbox reduces the input speed of the diesel engine, increases the torque output and transmits it to the tail shaft to drive the propeller to rotate and propel the ship to sail. When the propulsion system is running at low speed, the phenomenon of diesel engine overload or low load of diesel engine will occur due to different operat...

AI Technical Summary

Problems solved by technology

[0002] Most traditional marine diesel propulsion systems use a single-engine, single-propeller, and single-speed ratio propulsion system, which mainly includes a diesel engine, a gearbox with clutch function, a tail shaft, a set of propellers, a side control box, and a driving control box. The diesel engine drives the gearbox to rotate after being aligned with the gearbox at a low speed, and the gearbox reduces the input speed of the diesel engine, increases the torque output and transmits it to the tail shaft to drive the propeller to rotate and propel the ship to sail. When the propulsion system is running at low speed, the phenomenon of diesel engine overload or low load of diesel engine will occur due to different operating modes, which will reduce the safety and reliability of the diesel engine, shorten the service life and increase the consumption of fuel and engine oil. At the same time, when the fishing boat is at sea During operation, when the active power fails, it will not be able to return to the voyage, which increases the risk factor and cost consumption

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