Pod type electric jet propeller

Abstract

The invention relates to the field of shipbuilding industry, and aims to provide a pod-mounted water surface or underwater vehicle, which enables production of a pod type electric jet propeller to bepossible. The motor and the jet pump body are assembled into a whole. Moreover, the front rectification technology and the rear rectification technology of the jetpump are fully utilized, and the advancing function and the reversing function are achieved under the condition that an auxiliary device is not used. The efficiency of the propeller is improved, and manufacturing is more convenient due tothe small number of structural components. The jet propeller power assembly has the engineering advantages that the drive motor and the jet pump are designed into the jet propeller power assembly which can be assembled into a whole, and the jet propeller power assembly is installed at the bottom of a ship through the wing-shaped lazy arm. The pod typejet propeller comprises a compression cavity,an impeller,a rectifying body,a drive motor,an impeller shaft and a coupling, and aconical inflow body. According to a model test result, the technical effect of the pod type electric jet propeller isincreased by 25-50% in the aspect of propulsion efficiency characteristics.

Description

technical field [0001] The invention relates to the field of shipbuilding industry, and is intended to be used for a water surface or underwater vehicle equipped with a jet propeller in a pod. Background technique [0002] Now, the pod propeller uses propeller or ducted propeller technology to develop a new type of ship propulsion device, which is mainly used in the field of saving ship cabin space, improving ship operating performance, and reducing ship noise and vibration. [0003] The pod-type electric propulsion is generated by a diesel generator set, and indirectly drives the motor-propeller device in the pod outside the hull through cable connections. A pod capable of 360° full rotation is suspended at the bottom of the ship, integrating the propulsion device and the steering device, eliminating the usual propeller shafting and rudder, thus greatly increasing the flexibility of ship design, construction and use The advantages of electric propulsion are more fully refl...

AI Technical Summary

Problems solved by technology

The invention can implement the pod-type application of the jet propulsion device, so that the propulsion efficiency of the existing pod-type propulsion device can be increased by more than 36%, effectively solving the problems of electric boat endurance, maneuverability and design flexibility, and at the same time, fully Utilize the advantages of low noise and low vibration of jet propulsion to provide propulsion devices with better performance for new ships

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