CN217271002U

CN217271002U - Axial flow wind wheel and wind turbine

Info

Publication number: CN217271002U
Application number: CN202220045108.2U
Authority: CN
Inventors: 程守炤; 覃万翔; 齐凤
Original assignee: Guangdong Sunwill Precising Plastic Co Ltd
Current assignee: Guangdong Sunwill Precising Plastic Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-08-23
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses an axial flow wind wheel and wind turbine, axial flow wind wheel includes: a hub; the outer frame is coaxial with the hub, the upper end of the outer frame is provided with a flanging part which is turned up outwards, and the flanging part is used for guiding external air flow to enter the axial flow wind wheel; the blades are distributed in the circumferential direction around the hub, and two ends of each blade are fixedly connected with the hub and the outer frame respectively; the flanging part for guiding flow is arranged on the outer frame of the axial flow wind wheel, so that the generation of leakage vortex is reduced, the working efficiency of the wind wheel is improved, and the noise is reduced.

Description

Axial flow wind wheel and wind turbine

Technical Field

The utility model relates to a wind wheel technical field especially relates to an axial flow wind wheel and wind turbine.

Background

In the working process of the wind wheel, when external air flow enters the blades of the wind wheel, leakage vortex is formed at the tops of the blades, so that the working efficiency of the wind wheel is influenced, and meanwhile, large noise is generated.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an axial flow wind wheel and wind turbine sets up the turn-ups portion that is used for the water conservancy diversion at axial flow wind wheel's outline to reduce the production of revealing the whirlpool, improve the work efficiency of wind wheel, noise reduction.

In a first aspect, the embodiment of the present invention provides an axial wind wheel, the axial wind wheel includes:

a hub;

the outer frame is coaxial with the hub, the upper end of the outer frame is provided with a flanging part which is turned up outwards, and the flanging part is used for guiding external airflow to enter the axial flow wind wheel;

the blades are arranged in a plurality of surrounding modes and distributed in the circumferential direction of the hub, and two ends of each blade are fixedly connected with the hub and the outer frame respectively.

According to the utility model discloses axial compressor wind wheel has following technological effect at least: external air flow is smoothly guided into the axial flow wind wheel through the flanging part of the outer frame, so that the generation of leakage vortex is reduced, the working efficiency is improved, and the noise is reduced.

According to some embodiments of the utility model, the hem portion includes the hem line, the hem line is the circular arc.

According to the utility model discloses a some embodiments, the height of outline is h1, the height that the blade is located the outside is h2, satisfies: h1 > h 2.

According to the utility model discloses a some embodiments, the turn-ups angle of turn-ups portion is theta, satisfies: theta is more than or equal to 15 degrees and less than or equal to 60 degrees.

In a second aspect, the embodiment of the utility model provides a still provide a wind turbine, include according to the utility model discloses the axial compressor wind wheel of above-mentioned first aspect embodiment, the wind turbine is equipped with the water conservancy diversion circle, the water conservancy diversion circle with the coaxial setting of axial compressor wind wheel, the water conservancy diversion circle is located axial compressor wind wheel top.

According to the utility model discloses wind turbine has following technological effect at least: after passing through the flow guide ring, the outside air flow is smoothly guided into the axial flow wind wheel through the flanging part of the outer frame, so that the generation of leakage vortex is reduced, the working efficiency of the wind turbine is improved, and the noise is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an axial flow wind wheel according to some embodiments of the present invention;

fig. 2 is a cross-sectional view of an axial flow wind wheel according to some embodiments of the present invention;

fig. 3 is a schematic cross-sectional view of a portion of an outer frame according to some embodiments of the present invention;

fig. 4 is a schematic structural view of a wind turbine according to some embodiments of the present invention.

Reference numerals:

hub 100, outer frame 110, blades 120, turnup 130, turnup line 133, flat line 135, wind turbine 200, and guide ring 210.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, outer, inner, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The embodiments of the present invention will be further explained with reference to the drawings.

According to some embodiments of the utility model, referring to fig. 1 and 2, axial flow wind wheel includes wheel hub 100, outline 110 and a plurality of blade 120, the circumference that encircles wheel hub 100 of a plurality of blades 120 distributes, the both ends of blade 120 respectively with wheel hub 100 and outline 110 fixed connection, outline 110 is the annular form and with wheel hub 100 coaxial setting, the upper end of outline 110 is provided with turn-ups portion 130, turn-ups portion 130 turns up to the outside, it explains that, the outside refers to the direction of keeping away from the axis. When external air flow enters the axial flow wind wheel through the outer frame 110, the flanging part 130 enables the air flow to smoothly enter the wind wheel, so that the generation of leakage vortex is reduced, and the noise is reduced.

According to some embodiments of the present invention, referring to fig. 3, the turn-up portion 130 has a turn-up line 133 and a flat line 135, the flat line 135 is perpendicular to the axis of the axial flow wind wheel, the turn-up line 133 is a circular arc, and the start point and the end point of the circular arc can be expressed as: from bottom to top, from inside to outside, and finally tangent to the flat line 135, the linear shape of the arc allows the external air flow to smoothly enter the wind wheel.

It should be noted that the turnup portion 130 may have only the turnup line 133 without the flat line 135, and only a tangent line of the end point of the turnup line 133 is perpendicular to the axis of the axial flow wind wheel.

It should be noted that the flanging line 133 may also be a spline curve or a line composed of a plurality of straight lines.

According to some embodiments of the present invention, referring to fig. 1 and 2, the height of the outer frame 110 is h1, and the height of the blade 120 located at the outermost side is h2, satisfying: h1 > h2, which ensures that the external air flow firstly passes through the flanging part 130 and then enters the lower part of the blade 120, and prevents the generation of leakage vortex caused by direct contact with the blade 120.

It is understood that, referring to fig. 1, the height of the blade 120 in the vertical direction from the axis to the outside changes from small to large and then from large to small. H2 is not the maximum height of the entire blade 120, but rather the maximum height at the connection of the blade 120 to the outer frame 110.

According to some embodiments of the utility model, the turn-ups angle of turn-ups portion 130 is theta, satisfies: theta is more than or equal to 15 degrees and less than or equal to 60 degrees. Referring to fig. 3, two lines forming θ are: one ray is arranged along the up-down direction, and the starting point of the ray is the starting point of the flanging line 133 which is turned outwards; one end of the other ray is a starting point of the flanging line 133 turning outwards and is shot to the joint of the flanging line 133 and the flat line 135; the acute included angle of the two rays is theta.

According to some embodiments of the utility model, referring to fig. 4, axial compressor wind wheel installs on wind turbine 200, is provided with water conservancy diversion circle 210 on wind turbine 200, and water conservancy diversion circle 210 is the annular and is located the top of axial compressor wind wheel, and outside air current is successively through water conservancy diversion circle 210 and turn-ups portion 130 and then smoothly get into in the axial compressor wind wheel to reduce the production of revealing the whirlpool, noise reduction.

In the description herein, references to the description of "some embodiments" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An axial flow wind wheel, comprising:

a hub (100);

the outer frame (110) is coaxial with the hub (100), the upper end of the outer frame (110) is provided with a flanging part (130) which is turned up outwards, and the flanging part (130) is used for guiding outside air flow to enter the axial flow wind wheel;

the blades (120) are distributed in a circumferential mode around the hub (100), and two ends of each blade (120) are fixedly connected with the hub (100) and the outer frame (110) respectively.

2. The axial wind wheel according to claim 1, characterized in that the turnup portion (130) includes a turnup line (133), and the turnup line (133) is a circular arc.

3. The axial-flow wind wheel according to claim 1, characterized in that the height of the outer frame (110) is h1, the height of the blade (120) at the outermost side is h2, and the following conditions are satisfied: h1 > h 2.

4. The axial-flow wind wheel according to claim 1, characterized in that the turn-up angle of the turn-up portion (130) is θ, satisfying: theta is more than or equal to 15 degrees and less than or equal to 60 degrees.

5. A wind turbine (200) comprising an axial wind rotor according to any of claims 1 to 4, said wind turbine (200) being provided with a deflector (210), said deflector (210) being arranged coaxially with said axial wind rotor, said deflector (210) being located above said axial wind rotor.