Cooling water path structure of marine electric propulsion device

Abstract

The invention discloses a cooling water path structure of a marine electric propulsion device. A first valve is mounted on a water path inlet pipeline of frequency conversion control equipment; a third valve is mounted on a waterway outlet pipeline of the frequency conversion control equipment; a second valve is mounted on a waterway inlet pipeline of a propulsion motor; a fourth valve is mountedon a waterway outlet pipeline of the propulsion motor, a small water pump is connected between the waterway inlet pipeline of the variable-frequency control equipment and the waterway inlet pipeline of the propulsion motor, and a fifth valve is connected between the waterway outlet pipeline of the variable-frequency control equipment and the waterway outlet pipeline of the propulsion motor; underthe condition that an external water supply device breaks down, the corresponding valves are opened and closed, the small water pump is operated to enable cooling water in the equipment to circulate between the two pieces of equipment, heat dissipation is conducted through a water way pipeline and the surface of the propulsion motor, low-power continuous operation of the equipment can be achievedon the premise that other heat dissipation equipment is not added, and the operation reliability of the equipment is improved.

Description

technical field [0001] The invention belongs to a ship transmission device, in particular to a cooling waterway topology structure of a ship electric propulsion device. Background technique [0002] The traditional marine power plant, mainly diesel engine and steam turbine, has made important contributions to the development of ships and shipping. However, this type of power plant also hinders further development due to some inherent defects, such as: occupying too much space, and For ships with diesel engines and steam turbines as the main engines, the engine room space is occupied by bulky engines, mechanical transmissions, reducers and shafting, etc., the utilization rate of the cabin space is greatly reduced, and the payload is reduced; the working environment is poor, and diesel engines or steam turbines In the engine room of the main engine, not only the vibration is large, the noise is high, but also there is a lot of oil pollution, the exhaust gas emission affects th...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a cooling waterway topology structure of a marine electric propulsion device to solve the problem that the water supply device of the existing marine electric propulsion device cannot continue to operate due to a failure

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