Shaftless propeller sediment deposition prevention device based on sediment-carrying channel

Abstract

The invention discloses a shaftless propeller sediment deposition prevention device based on a sediment-carrying channel. The device comprises a filtering mechanism, a sediment discharge mechanism consisting of three layers of discharge mechanisms and a high-pressure water washing mechanism, the filtering mechanism comprises frustum-shaped holes and a grating filter screen which are arranged in groups, the first-layer discharge mechanism is arranged on the outer edges of a first fixing ring and a stator assembly epoxy resin layer, the second-layer discharge mechanism is arranged at one end of a second fixing ring, and the third-layer discharge mechanism is arranged at one end of the outer wall of a guide pipe hollow shell. According to the invention, the flow speed of filtered water flow is increased, the filtering efficiency and the discharging efficiency are improved, the cooling effect in a motor of a shaftless propeller is improved, external sediment water can be prevented from flowing back into the guide pipe, energy loss and structural abrasion of the shaftless propeller in a sediment-carrying channel are reduced, and the operation efficiency and the operation reliability of the shaftless propeller are improved.

Description

technical field [0001] The invention relates to a shaftless propeller, in particular to a device for enabling the shaftless propeller to run normally in a silt-rich waterway, and belongs to the technical field of ship engineering. Background technique [0002] As a new type of ship propulsion, shaftless rim electric propulsion (hereinafter referred to as shaftless propulsion) has the advantages of compact structure, low construction difficulty, high propulsion efficiency, low vibration, low noise, and less space occupation. It is being continuously promoted and applied in the field of military and civilian ship propellers. Such as figure 1 and figure 2 As shown, the shaftless propeller is suspended under the stern of the ship through a boom 100, and includes a duct 10, a stator assembly 20, a permanent magnet rotor 30 and several blades 40. The duct 10 is a tubular double-layer shell with two ends Close with cover plate 101. The stator assembly 20 includes an iron core ...

AI Technical Summary

Problems solved by technology

The flow of water flowing into the shaftless propeller causes sediment to deposit therein due to the decrease in flow velocity, which increases the resistance torque of the permanent magnet rotor 30, thereby increasing the running resistance of the shaftless propeller and increasing power consumption, thereby reducing its recharge mileage

In addition, due to the heavy sand that slows down the flow velocity of the sediment water cooling water in the shaftless propeller, the internal heat of the shaftless propeller cannot be efficiently transmitted, which has a great impact on the operating efficiency of the shaftless propeller, and then affects its overall performance

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