Split type water jet propulsion inlet runner structure

Abstract

The invention discloses a split type water jet propulsion inlet flow channel structure which is characterized in that the structure comprises a vertical plate, a base and a bent pipe flow channel, the vertical plate, the base and the bent pipe flow channel are three independently-machined components, the side face end of the vertical plate is connected with the side face end of the bent pipe flow channel, the bottom end of the bent pipe flow channel is connected with the top end of the base, and the top end of the bent pipe flow channel is connected with the top end of the base. The edge and the bottom end of the vertical plate are connected with the base. While the hydrodynamic performance of the inlet runner is guaranteed, casting defects can be remarkably reduced, the structural strength is improved, the machining process is simplified, the equipment requirement is lowered, the manufacturing period is shortened, and the safety, reliability and economical efficiency of the water-jet propeller are effectively improved.

Description

Technical field [0001] The present invention relates to a split spray propulsion inlet flow channel structure, which belongs to the field of ship propulsion technology. Background technique [0002] Imported flow path is an important overcurrent component of the spray propulsion device, which is responsible for introducing the water flow from the bottom of the ship to the task of delivering the thrush to the hull, and has an important role in the entire water supply promoting device. The imported flow path of the small and medium-sized water spray propulsion is generally integrated, such as figure 1 As shown, the imported flow path applied to the high-speed ship In order to meet the design requirements of the spray pump on the induced uniformity and structural strength, the imported flow path often has complex structures, excessive dimensions, plaques, etc., in one cast In the process, the risk of casting defects is added, and there is still a complex process, the process is comp...

AI Technical Summary

Problems solved by technology

The inlet channels of small and medium-sized water jet propulsion devices are generally formed by integral casting, such as figure 1 However, in order to meet the design requirements of the jet pump for the uniformity of inflow and structural strength of the inlet channel used on high-speed ships, the inlet channel often has problems such as complex structure, excessive size, and concentrated ribs. The risk of casting defects is increased in the process, and there are still problems such as complex process, high requirements for processing equipment, and long processing cycle in the machining process of large-size inlet runners.

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