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A water jet propulsor with adjustable blades

A water-jet propulsion and adjustable technology, applied in ship propulsion, propulsion parts, ship parts, etc., can solve the problems of optimizing the working efficiency of the jet pump by the impeller blades, improve the anti-cavitation performance, reduce the loss of efficiency, simplify the effect of structure

Active Publication Date: 2019-03-05
MARINE EQUIP & TECH INST JIANGSU UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with application number 201110199640.6 discloses an axial-flow water jet propulsion pump, but this patent only simplifies the structure of the water jet propulsion pump, and does not optimize the impeller blades to improve the working efficiency of the jet pump

Method used

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  • A water jet propulsor with adjustable blades
  • A water jet propulsor with adjustable blades
  • A water jet propulsor with adjustable blades

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:

[0029] as attached figure 1 , 2 , 3, 4 shown, figure 1 is the overall schematic diagram of the water jet propeller, figure 2 is a sectional view of the water jet, image 3 Yes figure 2 Partial sectional view of waterjet impeller A, Figure 4 is a magnified view of the blade.

[0030] A water jet propeller with adjustable blades, comprising a propeller main body; Guide vane 7, vane rotating valve 8, nozzle 9, elastic rod 10, magnetic sliding sleeve 11, guide vane hub 12, bearing 13, key 14, bevel gear 18 and other components.

[0031] like figure 2 , as shown in 3 and 4, one end of the pump shaft 2 passes through the water inlet channel 1 and is connected to the impeller hub 6 through a key 14, and the other end of the pump shaft 2 is equipped with a bevel gear 18, which simplifies the structure and reduces the In order to increase the axial si...

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Abstract

The invention relates to a blade partially adjustable water-spraying propeller comprising a water inlet flow pass, a pump shaft, a blade front portion, a blade, a blade rear portion, an impeller hub,a guide blade, a blade rotating valve, a spray nozzle, a magnetic force sliding sleeve, a guide blade hub, a bearing and a bevel gear. One end of the pump shaft penetrates through the water inlet flowpass and is connected with the impeller hub, the bearing is mounted at the tail end of the impeller hub, and the guide blade hub is connected with the tail end of the impeller hub. The blade adopts an axial flow type and comprises the disconnected blade front portion and blade rear portion, the blade front portion is fixed to the impeller hub, and the blade rear portion can rotate around a bladerotating valve. According to the blade partially adjustable water-spraying propeller, the impeller blade of a water spraying propelling pump is optimized and transformed, so that the spray pump bladeis partially adjustable; under the premise that a blade inlet placing angle is not changed, the blade is partially adjusted to change the placing angle of a blade outlet to enable the water-spraying propeller pump to operate in the optimum work condition point under the variable work condition, so that the work efficiency and cavitation performance of the spraying pump are greatly improved, and the service life of the spraying pump is prolonged.

Description

technical field [0001] The invention belongs to an axial-flow impeller of a marine water jet propulsion device, and in particular relates to a water jet propeller with adjustable blades. By adjusting the blades, the marine water jet propulsion pump can adapt to sailing, acceleration and turning of ships. , reversing, towing, translation and other variable operating conditions, improve the working efficiency of the jet pump, improve the anti-cavitation performance of the jet pump, and increase its service life. technical background [0002] Marine waterjet propulsion has the advantages of high maneuverability, good maneuverability, strong cavitation resistance, small resistance, low vibration and noise, strong adaptability to shallow water navigation, and high propulsion efficiency at high speeds. It is used in high-speed passenger ferries and military high-performance ships. There are a wide range of applications on board. As the core component of the water jet propulsion p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/36F04D29/38F04D29/046B63H11/08
CPCB63H11/08B63H2011/084F04D29/0467F04D29/36F04D29/384
Inventor 岑春海姚建娣季必新
Owner MARINE EQUIP & TECH INST JIANGSU UNIV OF SCI & TECH
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