CN110641667A

CN110641667A - Propeller

Info

Publication number: CN110641667A
Application number: CN201911091240.6A
Authority: CN
Inventors: 莫崇规
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-09
Filing date: 2019-11-09
Publication date: 2020-01-03

Abstract

The propeller adopts a new structural form and consists of a propeller hub, inner ring blades, a reinforcing guide ring and outer ring blades, so that the pressure of the fluid sprayed out of the propeller is uniform, and the performance of the propeller is improved.

Description

Propeller

Technical Field

The invention relates to the field of machinery, in particular to a propeller.

Background

At present, the propeller is usually circular, when the propeller rotates, the speed of the periphery of the blade is higher than that of the center of the blade, so that the speed of fluid sprayed out of the periphery of the blade is higher than that of fluid in the blade; the paddle drives the fluid to rotate together in the rotating process, so that the fluid is caused to do centrifugal motion; under the combined influence of the two factors, the central pressure of the fluid sprayed by the propeller is lower than the pressure of the periphery, and the efficiency of the propeller is reduced due to uneven pressure of the fluid sprayed by the propeller. Especially, when the ship sails at a high speed, the center of water flow sprayed by the propeller can generate a cavitation phenomenon, the efficiency of the propeller is influenced, and in order to improve the performance of the ship propeller, a guide pipe and a vortex-eliminating fin are additionally arranged to play a certain role.

Disclosure of Invention

In order to overcome the defects of the background art, the propeller adopts a novel structural form, so that the pressure of fluid sprayed by the propeller is uniform, and the influence on the performance of the propeller caused by the cavitation phenomenon is avoided, wherein the fluid is liquid, gas or a mixture capable of flowing.

The technical scheme of the invention comprises the following steps: the propeller comprises a propeller hub, inner ring blades and a reinforcing guide ring; the propeller hub is used for connecting the power rotating shaft and the plurality of inner ring blades; the inner ring paddle longitudinal oblique angle is larger than 15 degrees, so that the entering fluid can be decomposed into the axial direction along the paddle hub and the diameter direction of the paddle hub, the pressure of the center of the ejected fluid is increased, the problem that the performance of the propeller is reduced due to insufficient pressure of the center of the ejected fluid is avoided, the surface formed by the rotation of the guide edge of the paddle is a conical surface or an approximate conical surface, and the area of the entering fluid is larger than the area of the ejected fluid, so that the ejection pressure is increased; the reinforced guide ring is used for enhancing the strength of the blade, avoiding the damage of overlarge bending moment of the root part of the inner ring blade, playing a role in guiding and restraining the centrifugal motion of fluid in the diameter direction of the hub.

And a plurality of outer ring blades are arranged outside the reinforced guide ring to improve the thrust of the propeller.

Through the technical scheme, the technical scheme of the invention has the beneficial effects that: the pressure of the fluid ejected by the propeller is uniform, and the working efficiency is improved.

Drawings

For a clearer explanation of the invention, reference will be made below to a propeller schematic, the following figures being merely examples of the invention, and it will be clear to a person skilled in the art that other figures can be obtained from the figures provided without inventive effort.

Fig. 1 is a schematic view of a propeller:

the propeller comprises a propeller hub 1, inner ring blades 2 and a reinforcing guide ring 3.

FIG. 2 is a schematic view of a propeller provided with outer ring blades:

the propeller comprises a propeller hub 1, inner ring blades 2, a reinforcing flow guide ring 3 and outer ring blades 4.

Detailed Description

Embodiment 1, a propeller as shown in fig. 1, comprising: the structure comprises a propeller hub 1, inner ring blades 2 and a reinforcing guide ring 3; the propeller hub 1 is used for connecting the power rotating shaft and the plurality of inner ring blades 2; the longitudinal oblique angle of the inner ring blade 2 is larger than 15 degrees, so that the entering fluid can be decomposed into the axial direction of the propeller hub 1 and the diameter direction of the propeller hub 1, the pressure of the center of the ejected fluid is increased, the problem that the performance of the propeller is reduced due to insufficient pressure of the center of the ejected fluid is avoided, the surface formed by the rotation of the leading edge of the blade 2 is a conical surface or an approximate conical surface, and the area of the entering fluid is larger than the area of the ejected fluid, so that the ejection pressure is increased; the reinforced guide ring 3 is used for enhancing the strength of the blades, avoiding the damage of overlarge bending moment of the root part of the inner ring blade 2, and simultaneously playing a role in guiding and restraining the centrifugal motion of fluid in the diameter direction of the propeller hub 1.

In embodiment 2, as shown in fig. 2, in the propeller, a plurality of outer ring blades 4 are arranged outside the reinforcing deflector ring 3 to increase the thrust of the propeller.

Those skilled in the art can make modifications or changes to the equivalent embodiments according to the technical contents disclosed above without departing from the technical solutions of the present invention, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims

1. The propeller of the present invention is characterized by comprising: the propeller comprises a propeller hub (1), inner ring blades (2) and a reinforcing guide ring (3); the propeller hub (1) is used for connecting the power rotating shaft and the plurality of inner ring blades (2); the longitudinal oblique angle of the inner ring blade (2) is larger than 15 degrees, so that the entering fluid can be decomposed into the axial direction of the hub (1) and the diameter direction of the hub (1), the pressure of the center of the ejected fluid is increased, the surface formed by the rotation of the leading edge of the blade (2) is a conical surface or an approximate conical surface, and the area of the entering fluid is larger than the area of the ejected fluid, so that the ejection pressure is increased; the reinforced guide ring (3) is used for enhancing the strength of the blades, avoiding the damage of overlarge bending moment of the root parts of the inner ring blades (2), and plays a role in guiding and restraining the centrifugal movement of fluid in the diameter direction of the hub (1).

2. The propeller as recited in claim 1, characterized in that a plurality of outer ring blades (4) are arranged outside the reinforcing deflector ring (3) to increase the thrust of the propeller.