High-strength fan blade structure

Abstract

The utility model discloses a high-strength fan blade structure which comprises a blade root, a flow guide part is arranged at the top of the blade root, a first blade body and a second blade body are welded to the top of the flow guide part, and a blade top is welded to the top of the first blade body and the top of the second blade body in a sealed mode. Air inlet holes are formed in the outer surfaces of the first blade body and the second blade body correspondingly, flow guide cavities are formed in the first blade body and the second blade body correspondingly, airflow guiding transmission is conducted through the flow guide cavities, a heat dissipation flow channel is formed in the blade root, and the top of the heat dissipation flow channel communicates with a first exhaust flow channel and a second exhaust flow channel. The first exhaust flow channel is communicated with the first blade main body, the second exhaust flow channel is communicated with the second blade main body, a plurality of heat dissipation openings are formed in the bottom of the blade root, and the heat dissipation openings are communicated with the heat dissipation flow channel.

Description

Technical Field

[0001] The utility model belongs to the technical field of blades, and more specifically, relates to a high-strength fan blade structure. Background Art

[0002] With the rapid development of the wind power industry, wind turbine blades, as key components of wind turbines, have a significant impact on the efficiency and stability of wind power generation. In practical applications, wind turbine blades must withstand numerous complex loads, including enormous wind, gravity, and centrifugal forces, and must operate for extended periods in harsh natural environments, such as strong winds, heavy rain, sandstorms, and low temperatures.

[0003] The existing fan blade structure has certain limitations in terms of strength, and is prone to fatigue damage, deformation, and even fracture. It is unable to reduce wind resistance and improve overall flow conduction and heat dissipation. A single blade is subjected to greater pressure during high-intensity rotation operations, has a slow flow conduction speed, and cannot dissipate heat in time, which greatly shortens its service life. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a high-strength fan blade structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-strength fan blade structure, including a blade root, a guide portion is provided at the top of the blade root, a first blade body and a second blade body are welded to the top of the guide portion, the first blade body and the second blade body are welded and sealed with a blade top, the outer surfaces of the first blade body and the second blade body are both provided with air inlet holes, the first blade body and the second blade body are both provided with guide cavities, and airflow is guided and transmitted through the guide cavities. A heat dissipation channel is provided in the blade root, the top of the heat dissipation channel is connected to the first exhaust channel and the second exhaust channel, the first exhaust channel is connected to the first blade body, and the second exhaust channel is connected to the second blade body, a plurality of heat dissipation ports are provided at the bottom of the blade root, and the plurality of heat dissipation ports are connected to the heat dissipation channel, the first blade body and the second blade body both have a composite layer structure, and from the inside to the outside are an inner alloy layer, an intermediate ceramic layer and an outer wear-resistant layer.

[0006] As an optional solution of the present invention, symmetrical guide grooves are provided on both sides of the guide portion, and a row of guide vanes are provided in the guide grooves, and the guide vanes are in an arc shape.

[0007] As an optional solution of the present invention, the top of the guide cavity is connected to an upper exhaust groove, the top of the upper exhaust groove is connected to the transfer flow channel in the blade top, the top of the blade top is provided with a heat dissipation block, and the side of the heat dissipation block is provided with a plurality of heat dissipation holes, the plurality of heat dissipation holes are distributed in a circle, and the interiors are all connected to the transfer flow channel, and the transfer flow channel is connected through the plurality of heat dissipation holes to perform the upward diversion and exhaust.

[0008] As an optional solution of the present invention, symmetrical buffer grooves are provided on both sides of the heat dissipation channel, and the buffer grooves are tilted downward as a whole.

[0009] As an optional solution of the present invention, the inner alloy layer is a nickel-based high-temperature alloy, the middle ceramic layer is a silicon nitride ceramic layer, and the outer wear-resistant layer is a tungsten carbide coating.

[0010] The utility model provides a high-strength fan blade structure, which has the following beneficial effects:

[0011] By setting the first blade body and the second blade body, the two blades can operate simultaneously to increase the diversion speed. By setting symmetrical guide vanes at the guide part of the blade root, the wind resistance can be further reduced and the diversion speed can be increased. The airflow enters the guide cavity through the air inlet hole. Most of the airflow will be transported toward the first exhaust flow channel and the second exhaust flow channel. A small amount of gas will be locally dissipated through the heat dissipation block on the blade top. After the gas enters the heat dissipation flow channel, it will be dispersed and buffered along the buffer groove, further reducing the pressure brought by the airflow and quickly dissipating the heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a front view of the utility model;

[0014] Figure 3 It is the DD sectional view of the present utility model;

[0015] Figure 4 For this utility model Figure 3 A partial magnified view of area A;

[0016] Figure 5 It is the EE sectional view of the present utility model.

[0017] In the figure: 1. Blade root; 101. Heat dissipation channel; 102. Buffer groove; 103. First exhaust channel; 104. Second exhaust channel; 105. Heat dissipation port; 2. Air guide; 201. Guide groove; 3. Guide vane; 4. First blade body; 5. Second blade body; 6. Blade top; 601. Transfer channel; 7. Heat dissipation block; 701. Heat dissipation hole; 8. Air guide cavity; 9. Upper exhaust groove; 10. Air inlet. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] See also Figures 1 to 5 The utility model provides a technical solution: a high-strength fan blade structure, including a blade root 1, a guide portion 2 is provided on the top of the blade root 1, symmetrical guide grooves 201 are provided on both sides of the guide portion 2, a row of guide vanes 3 are provided in the guide groove 201, the guide vanes 3 are in an arc shape, and the guide vanes 3 reduce air resistance and improve rotation stability. A first blade body 4 and a second blade body 5 are welded on the top of the guide portion 2, the first blade body 4 is set at a 5-degree inclination angle, and the second blade body 5 is set at a 10-degree inclination angle. The tops of the first blade body 4 and the second blade body 5 are welded and sealed with a blade top 6. The outer surfaces of the first blade body 4 and the second blade body 5 are both provided with air inlet holes 10, and the first blade body 4 and the second blade body 5 are both provided with guide cavities 8, through which airflow is guided and transmitted. The top of the guide cavity 8 is connected with an upper exhaust groove 9, and the top of the upper exhaust groove 9 is connected with the transfer flow channel 601 in the blade top 6. A heat dissipation block 7 is provided at the top of the blade top 6, and a plurality of heat dissipation holes 701 are provided on the side of the heat dissipation block 7. The plurality of heat dissipation holes 701 are distributed in a circle and are internally connected to the transfer flow channel 601, and the transfer flow channel 601 is connected through the plurality of heat dissipation holes 701 for upward diversion and exhaust.

[0022] A heat dissipation channel 101 is provided in the blade root 1. The top of the heat dissipation channel 101 is connected to the first exhaust channel 103 and the second exhaust channel 104. The first exhaust channel 103 is connected to the first blade body 4, and the second exhaust channel 104 is connected to the second blade body 5, so as to perform independent exhaust and centralized heat dissipation. A plurality of heat dissipation ports 105 are provided at the bottom of the blade root 1. The plurality of heat dissipation ports 105 are connected to the heat dissipation channel 101. Symmetrical buffer grooves 102 are provided on both sides of the heat dissipation channel 101. The buffer grooves 102 are tilted downward as a whole, so as to facilitate airflow dispersion, perform certain buffering and heat dissipation.

[0023] Both the first blade body 4 and the second blade body 5 have a composite layer structure, and from the inside to the outside are an inner alloy layer, an intermediate ceramic layer and an outer wear-resistant layer. The inner alloy layer is a nickel-based high-temperature alloy, which can withstand stress in a high-temperature environment and provide basic strength support for the blade. The intermediate ceramic layer is a silicon nitride ceramic layer, which has the characteristics of high hardness and high heat resistance, and can effectively resist the impact of particulate matter in the airflow and protect the inner alloy layer. The outer wear-resistant layer is a tungsten carbide coating, which has good wear resistance and can reduce the wear of the blade during high-speed rotation.

[0024] The specific usage and function of this embodiment: by arranging symmetrical guide plates 3 on the guide portion 2 of the blade root 1, the wind resistance can be further reduced and the diversion speed can be increased. The airflow enters the guide cavity 8 through the air inlet 10, and most of the airflow will be transported toward the first exhaust flow channel 103 and the second exhaust flow channel 104. A small amount of gas will be locally dissipated through the heat dissipation block 7 on the blade top 6. After the gas enters the heat dissipation flow channel 101, it will be dispersed and buffered along the buffer groove 102, further reducing the pressure brought by the airflow and dissipating the heat. Finally, the heat is dissipated and exhausted through multiple paths through multiple dispersion ports, thereby improving the overall heat dissipation. Combined with the first blade body 4 and the second blade body 5, dual-blade operation is performed simultaneously to increase the diversion speed.

[0025] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A high-strength fan blade structure, characterized by: The invention comprises a blade root (1), wherein a guide portion (2) is provided at the top of the blade root (1), a first blade body (4) and a second blade body (5) are welded to the top of the guide portion (2), a blade top (6) is welded and sealed at the top of the first blade body (4) and the second blade body (5), an air inlet hole (10) is provided on the outer surface of the first blade body (4) and the second blade body (5), a guide cavity (8) is provided in the first blade body (4) and the second blade body (5), and air flow is guided and transmitted through the guide cavity (8), and a heat dissipation channel (1) is provided in the blade root (1). 01), the top of the heat dissipation channel (101) is connected to the first exhaust channel (103) and the second exhaust channel (104), the first exhaust channel (103) is connected to the first blade body (4), the second exhaust channel (104) is connected to the second blade body (5), a plurality of heat dissipation openings (105) are provided at the bottom of the blade root (1), the plurality of heat dissipation openings (105) are connected to the heat dissipation channel (101), the first blade body (4) and the second blade body (5) both have a composite layer structure, and from the inside to the outside are an inner alloy layer, a middle ceramic layer and an outer wear-resistant layer.

2. A high-strength fan blade structure according to claim 1, characterized in that: Symmetrical guide grooves (201) are provided on both sides of the guide portion (2), and a row of guide vanes (3) are provided in the guide grooves (201), wherein the guide vanes (3) are in an arc shape.

3. The high-strength fan blade structure according to claim 1, characterized in that: The first blade body (4) is set at an inclination angle of 5 degrees, and the second blade body (5) is set at an inclination angle of 10 degrees.

4. The high-strength fan blade structure according to claim 1, characterized in that: The top of the guide cavity (8) is connected to an upper exhaust groove (9), and the top of the upper exhaust groove (9) is connected to the transfer flow channel (601) in the blade top (6). A heat dissipation block (7) is provided on the top of the blade top (6), and a plurality of heat dissipation holes (701) are provided on the side of the heat dissipation block (7). The plurality of heat dissipation holes (701) are distributed in a circumferential manner and are all connected to the transfer flow channel (601) inside. The transfer flow channel (601) is connected through the plurality of heat dissipation holes (701) to perform upward guide exhaust.

5. The high-strength fan blade structure according to claim 1, characterized in that: Symmetrical buffer grooves (102) are provided on both sides of the heat dissipation channel (101), and the buffer grooves (102) are tilted downward as a whole.

6. The high-strength fan blade structure according to claim 1, characterized in that: The inner alloy layer is a nickel-based high-temperature alloy, the middle ceramic layer is a silicon nitride ceramic layer, and the outer wear-resistant layer is a tungsten carbide coating.

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