Self-circulation heat dissipation thrust bearing cavity structure of small and medium-sized water-jet thruster

Abstract

The invention discloses a self-circulation heat dissipation thrust bearing cavity structure of a small and medium-sized water jet thruster, which adopts a bearing cavity structure combined by a heat dissipation bearing box and a circulation impeller bearing end cover, so that the space is fully utilized, the heat dissipation area of the bearing box is greatly increased, the heat dissipation effect is improved, the self rotation of an impeller shaft is propelled by water jet, and the self-circulation heat dissipation thrust bearing cavity structure of the small and medium-sized water jet thruster is realized. The circulating impeller is arranged in the bearing cavity to replace an external hydraulic pump, so that not only is the heat dissipation requirement of thrust bearing lubricating oil of small and medium-sized water jet propulsion on different working sections met, but also the equipment cost is reduced, and the operation energy consumption and the maintenance cost are reduced.

Description

technical field [0001] The application relates to a self-circulating heat dissipation thrust bearing chamber structure of a small and medium-sized water jet propeller, which belongs to the technical field of ship propulsion. Background technique [0002] Most of the thrust generated by the waterjet jet is transmitted to the hull through the thrust bearing to push the ship forward. Therefore, the thrust bearing is very large, and the thrust bearing is very important for the reliable operation of the water jet propeller. [0003] The thrust bearing bearing housing of small and medium-sized water jet propulsion units is generally integrated on the inlet channel, and the inlet channel is assembled with the water jet propulsion pump and installed on the hull (see figure 1 ); due to the large size and weight of the inlet channel of the large waterjet propeller, it is usually used as a part of the hull structure and welded on the hull by the shipyard, and the thrust bearing is arr...

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Problems solved by technology

[0008] The technical problem to be solved in this application is that the bearing housing of the small and medium-sized water jet propeller is located in the pump cabin, the temperature in the pump cabin is generally high, especially in summer, and the problem of difficulty in heat dissipation of the lubricating oil

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