Variable ducted propeller

A technology of ducted propellers and propellers, which is applied in shipbuilding, ship propulsion, ships, etc., can solve the problems of low propulsion efficiency and decrease of propulsion efficiency, and achieve the effect of improving propulsion efficiency and high propulsion efficiency

Active Publication Date: 2016-03-16
中国船舶重工集团公司第七〇二研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In general, a catheter with higher efficiency can be found through optimization design, but it is found during the optimization process that since the expansion angle of the existing catheter is fixed, the expansion angle is the lower surface of the catheter airfoil (that is, the inner surface ) and the conduit axis, the ratio of the inlet and outlet areas of the conduit is also fixed, when the expansion angle is small, the propulsion eff

Method used

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Embodiment Construction

[0022] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0023] See figure 1 , figure 2 , image 3 , Figure 4 , the present invention includes a propeller 1 and a conduit sleeved on the periphery of the propeller 1, the conduit includes a fixed pipe section 2 and a movable pipe section 3 connected in series along the axial direction of the propeller 1, and the fixed pipe section 2 and the movable pipe section 3 are both annular sleeve structures , the fixed pipe section 2 is located at the front end of the conduit; the front end refers to the shaft of the propeller 1 and one end of the gearbox, and the gearbox transmits power to the shaft of the propeller 1; the movable pipe section 3 is composed of a plurality of The vanes 31 are connected in series along the circumferential direction, and the vanes 31 are rotatably connected to the end surface of the fixed pipe section 2. The outer wall o...

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Abstract

A variable ducted propeller comprises a propeller and a duct which sleeves the periphery of the propeller, wherein the duct comprises a fixed tube section and a movable tube section, which are connected with each other in series in an axial direction of the propeller; the fixed tube section is positioned at the front end of the duct; the movable pipe section is formed by connecting a plurality of blades with wing-shaped sections in series in a circumferential direction; the blades are rotatably connected with the end surface of the fixed tube section; a hydraulic control lever is hinged on the outer wall surface of each blade; push levers of the hydraulic control levers are hinged with the blades; push lever seats of the hydraulic control levers are hinged with the outer wall surface of the fixed tube section; and the axial directions of the hydraulic control levers are parallel to a bus of the duct. According to the invention, high propelling efficiency under two different working conditions of low advance operation and high speed voyage can be ensured.

Description

technical field [0001] The invention relates to the technical field of underwater propulsion devices, in particular to a ducted propeller, in particular to a ducted propeller with an adjustable duct outlet expansion angle. Background technique [0002] The underwater propulsion device is used to propel ships, boats, submersibles, deep-sea mobile workstations, offshore work platforms and other surface / submerged objects for navigational movement and attitude adjustment. The ducted propeller is a widely used underwater propulsion device. It refers to adding a guide tube around the propeller, that is, a circular sleeve is installed around the ordinary propeller. The sleeve can be fixed or rotated as a whole. Compared with ordinary propellers, due to the diversion effect of the duct, the propulsion force can be improved. As one of the key components of the ducted propeller, the duct directly affects the efficiency of the ducted propeller. In general, a catheter with higher effi...

Claims

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Application Information

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IPC IPC(8): B63H5/15
CPCB63H5/15
Inventor 翟树成周剑周斌马艳郑巢生
Owner 中国船舶重工集团公司第七〇二研究所
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