Wind power generation silencer and wind power generation equipment

Abstract

The utility model discloses a wind power generation silencer and wind power generation equipment, and relates to the technical field of generators. The wind power generation silencer comprises an air pipe and a silencing layer, one end of the air pipe is provided with an air inlet, the other end is provided with an air outlet, and a pipeline is arranged between the air inlet and the air outlet. The silencing layer is arranged on the inner wall of the air pipe; the number of the air pipes is multiple, and the multiple air pipes are arranged side by side. Wherein the multiple air inlets are located on the same plane, the multiple air outlets are located on the same plane, the pipeline is arranged in an arc shape, a split connection mode is adopted in the technical scheme, the multiple air pipes are combined, and after the multiple air inlets are spliced side by side, the multiple air inlets are connected with an air outlet port of external air outlet equipment. The pipeline is of an arc-shaped or elbow structure, and by means of the mode that the multiple arc-shaped or elbow structures are arranged side by side, on the premise that the influence on wind resistance is reduced to the maximum degree, absorption and consumption of noise power are increased, and the noise reduction capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a wind power generation silencing device and a wind power generation equipment. Background Art

[0002] As wind turbines develop towards larger sizes, the noise of wind turbines is also increasing. At the same time, in order to match overseas motors and meet the noise reduction needs of customers, we adopt measures such as improvements in processes and materials to achieve noise reduction effects, meet customer needs, and enhance the competitiveness of generator products.

[0003] At present, the existing technology mostly adopts adding a silencer at the air inlet of the generator. The clamp is in the shape of a cuboid or a cylinder and filled with silencer material. However, while this method improves the noise reduction effect, it reduces the power generation efficiency due to the influence of wind resistance caused by the change of the internal structure. Utility Model Content

[0004] The main purpose of the utility model is to provide a wind power generation silencer and wind power generation equipment, aiming to solve the technical problem of reducing power generation efficiency by adding a silencer structure at the air inlet in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a wind power generation silencing device, the wind power generation silencing device comprising:

[0006] An air duct, wherein one end of the air duct has an air inlet, the other end of the air duct has an air outlet, and a pipeline is provided between the air inlet and the air outlet;

[0007] A sound-absorbing layer, the sound-absorbing layer being arranged on the inner wall of the air duct;

[0008] There are multiple air ducts, and the multiple air ducts are arranged in parallel; wherein the multiple air inlets are located on the same plane, and the multiple air outlets are located on the same plane; the pipeline is arranged in an arc shape.

[0009] In one embodiment, a guide layer is provided at the edge of the air inlet. The guide layer is arranged around the edge of the air inlet, and the guide layer is used to guide the air path entering the air inlet.

[0010] In one embodiment, the guide layer is arranged in a trumpet shape, and the guide layer is arranged to gradually expand in a direction perpendicular to the air inlet and outward from the air inlet.

[0011] In one embodiment, the guide layer is a curved surface or a flat surface.

[0012] In one embodiment, the plurality of air inlets are arranged in parallel, and the plurality of air inlets enclose an air outlet slot that is compatible with an air outlet port of an external air outlet device; a flange is provided along the edge of the air outlet slot, and a mounting hole is provided on the flange.

[0013] In one embodiment, the sound-absorbing layer is a fiber layer, and the fiber layer is evenly laid on the inner wall of the air duct.

[0014] In one embodiment, the air inlet and the air outlet are perpendicular to each other.

[0015] In one embodiment, the air outlet is arranged downward, and the air inlet is arranged horizontally.

[0016] In one embodiment, two adjacent air ducts are detachably connected.

[0017] In addition, in order to solve the above problems, the utility model also proposes a wind power generation equipment, and the wind power generation equipment is applied with the wind power generation silencer as mentioned above.

[0018] The technical solution of the utility model adopts a split connection method to combine multiple air ducts, and after multiple air inlets are spliced ​​in parallel, they are connected to the air outlet port of the external air outlet device. The pipeline is an arc or elbow structure. Through the parallel arrangement of multiple arc or elbow structures, the absorption and consumption of noise power are increased while minimizing the impact on wind resistance, thereby improving the noise reduction ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of the wind power generation silencer provided by the utility model.

[0021] Description of Figure Numbers:

[0022]

[0023]

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] The utility model proposes a wind power generation silencer, which includes an air duct 10 and a silencer layer 20. The air duct 10 has an air inlet 11 at one end and an air outlet 12 at the other end, and a pipeline 13 is provided between the air inlet 11 and the air outlet 12; the silencer layer 20 is arranged on the inner wall of the air duct 10; the number of the air ducts 10 is multiple, and the multiple air ducts 10 are arranged in parallel; wherein the multiple air inlets 11 are located on the same plane, and the multiple air outlets 12 are located on the same plane, and the pipeline 13 is arranged in an arc shape. The technical solution of the utility model adopts a split connection method to combine the multiple air ducts 10, and after the multiple air inlets 11 are spliced ​​in parallel, they are connected to the air outlet port of an external air outlet device. The pipeline 13 is an arc-shaped or elbow-shaped structure. By arranging multiple arc-shaped or elbow-shaped structures in parallel, the absorption and consumption of noise power is increased while minimizing the impact on wind resistance, thereby improving the noise reduction capability.

[0029] For the air outlet 12 of the large megawatt generator, due to the limited cabin space, it is considered to add noise reduction measures between the air outlet 12 of the motor and the air outlet 12 of the cabin. Directly installing a muffler at the air outlet 12 of the motor requires the addition of other fixed structural parts, resulting in a reduction in the space of the compressor cabin, affecting the operation and maintenance and installation space of other functional components, and making it difficult to transport the motor or assemble the whole machine. Therefore, it is considered to take noise reduction measures at the air outlet 12 of the cabin.

[0030] In one embodiment, please refer to Figure 1 In this embodiment, two air ducts 10 are used as an example for description. During assembly, the two air ducts 10 are arranged in parallel, and the air inlets 11 and the air outlets 12 of the two air ducts 10 are arranged in parallel.

[0031] In some other assembly methods, more than two air ducts 10 can also be used for assembly. Arrange multiple air ducts 10 in a "single line". Similarly, the air outlets 12 and air inlets 11 of multiple air ducts 10 are also arranged in a "single line". In addition, in order to improve adaptability and compatibility, multiple air ducts 10 can also be arranged in an "array", such as a "2*2" arrangement. In this arrangement, the length of the pipeline 13 is adjusted accordingly to ensure that the multiple pipelines 13 fit together and bend in the same direction.

[0032] The pipeline 13 is arranged in an arc-shaped structure, that is, the pipeline 13 adopts an elbow-type structure, and the cross section of the pipeline 13 is a quadrilateral. A sound-absorbing layer 20 is installed on the inner wall of the pipeline 13 .

[0033] In this embodiment, when the airflow from the cabin air outlet 12 is blown out, it enters two independent air ducts 10 through the two air inlets 11. The airflow is divided into two flow channels, thereby changing the flow channel wind direction to increase the area and effect of absorbing noise energy and improve the noise reduction effect.

[0034] In addition, during the disassembly and assembly of the air duct 10, due to the large size of the equipment, the multiple air ducts 10 in this embodiment are detachably connected, so the air ducts 10 can be installed on the cabin one by one in multiple times. For example, the air duct 10 on the left side is assembled in place first, and then the air duct 10 on the right side is assembled, thereby improving the convenience of assembly and avoiding the influence of the weight and physical strength of the integrated structure on lifting and installation.

[0035] The sound-absorbing layer 20 is a fiber layer. For example, the fiber material is fixed on a porous mesh plate, and the porous mesh plate is then fixed on the inner wall of the pipeline 13. The sound-absorbing layer 20 has a resistive noise reduction effect on the high-frequency noise emitted by the motor.

[0036] In this embodiment, no other structures are set at the air inlet 11, inside the air duct 10, and at the air outlet 12, thereby minimizing the impact on the airflow resistance. This ensures the stable flow of the airflow and improves the power generation efficiency. In this embodiment, the airflow is cut into multiple flow channels, and each pipeline 13 is bent to increase the absorption and consumption of noise power, thereby improving the noise reduction capability.

[0037] The technical solution of the utility model adopts a split connection method to combine multiple air ducts 10, and multiple air inlets 11 are spliced ​​in parallel and connected to the air outlet port of the external air outlet device. The pipeline 13 is an arc or elbow structure. Through the parallel arrangement of multiple arc or elbow structures, the absorption and consumption of noise power are increased while minimizing the impact on wind resistance, thereby improving the noise reduction ability.

[0038] In one embodiment, a guide layer 30 is provided at the edge of the air inlet 11 . The guide layer 30 is arranged around the edge of the air inlet 11 . The guide layer 30 is used to guide the air path entering the air inlet 11 .

[0039] The guide layer 30 is used to smoothly guide the airflow into the pipeline 13 to prevent the airflow from generating eddy currents when passing through the air inlet 11, thereby affecting the ventilation and heat dissipation of the motor.

[0040] The guide layer 30 can adopt a trumpet-like structure. It should be noted that the direction from the air inlet 11 through the pipe 13 to the air outlet 12 is inward, and the opposite direction is outward. The guide layer 30 is gradually expanded outward. That is, the width of the guide layer 30 connected to the cabin air outlet 12 is relatively large.

[0041] The guide layer 30 may be formed of an arc surface, in which case the edge of the air inlet 11 is rounded and connected to the pipe 13; the guide layer 30 may also be formed of a plane, in which case the edge of the air inlet 11 is obliquely connected to the pipe 13. The use of an arc surface or a plane can prevent the airflow from generating eddy currents when entering the air inlet 11, which may cause the air path to flow smoothly and affect the heat dissipation effect.

[0042] In addition, by providing the guide layer 30, the effect of air flow resistance can be further reduced and the power generation efficiency can be improved.

[0043] In one embodiment, in order to ensure the sealing performance when the air inlet 11 is connected to the air outlet 12 of the cabin, a flange 40 or a flange plate is provided at the edge of the air inlet 11. The flange 40 is provided with a mounting hole for fixing screws or threaded columns. The flange 40 or the flange is fixed to the air outlet 12 of the cabin by screws or threaded columns to improve the sealing performance of the connection.

[0044] It can be understood that since the multiple air inlets 11 are connected in parallel, the edges between two adjacent air inlets 11 fit closely together, so there is no need to set flanges 40 or flange plates on the adjacent sides of the air inlets 11. Specifically, for example, when two air ducts 10 are used, flanges 40 are set on the upper, lower, and left edges of one air inlet, and flanges 40 are set on the upper, lower, and right edges of the other air inlet. For example, when three air ducts 10 are used, the air ducts 10 on the left and right sides are the same as the above method, and the air duct 10 in the middle only needs to be set with flanges 40 on the upper and lower side edges, and so on.

[0045] In one embodiment, in order to further improve the sealing performance, a sealing strip may be provided between two adjacent sides of the two air ducts 10 to prevent the air flow from blowing out from the gap between the two adjacent sides of the two air ducts 10 .

[0046] In one embodiment, the air inlet 11 is perpendicular to the air outlet 12. After the airflow enters the air duct 10 from the air inlet 11, the airflow is deflected by 90° when it is blown out from the air outlet 12, so as to ensure the absorption and consumption of noise power and the reliability and stability of the noise reduction function.

[0047] In one embodiment, the air inlet 11 is usually installed horizontally, and the air outlet 12 is set downward, so as to prevent rain or other stains from entering the air duct 10 from the air outlet 12 when used in an outdoor environment, thereby ensuring stable operation of the equipment and reducing interference from external environmental factors.

[0048] In order to solve the above problems, the utility model also proposes a wind power generation equipment, and the wind power generation equipment is applied with the wind power generation silencer as mentioned above.

[0049] For the air outlet 12 of the large megawatt generator, due to the limited cabin space, it is considered to add noise reduction measures between the air outlet 12 of the motor and the air outlet 12 of the cabin. Directly installing a muffler at the air outlet 12 of the motor requires the addition of other fixed structural parts, resulting in a reduction in the space of the compressor cabin, affecting the operation and maintenance and installation space of other functional components, and making it difficult to transport the motor or assemble the whole machine. Therefore, it is considered to take noise reduction measures at the air outlet 12 of the cabin.

[0050] Please refer to Figure 1 In this embodiment, two air ducts 10 are used as an example for description. During assembly, the two air ducts 10 are arranged in parallel, and the air inlets 11 and the air outlets 12 of the two air ducts 10 are arranged in parallel.

[0051] In some other assembly methods, more than two air ducts 10 can also be used for assembly. Arrange multiple air ducts 10 in a "single line". Similarly, the air outlets 12 and air inlets 11 of multiple air ducts 10 are also arranged in a "single line". In addition, in order to improve adaptability and compatibility, multiple air ducts 10 can also be arranged in an "array", such as a "2*2" arrangement. In this arrangement, the length of the pipeline 13 is adjusted accordingly to ensure that the multiple pipelines 13 fit together and bend in the same direction.

[0052] The pipeline 13 is arranged in an arc-shaped structure, that is, the pipeline 13 adopts an elbow-type structure, and the cross section of the pipeline 13 is a quadrilateral. A sound-absorbing layer 20 is installed on the inner wall of the pipeline 13 .

[0053] In this embodiment, when the airflow from the cabin air outlet 12 is blown out, it enters two independent air ducts 10 through the two air inlets 11. The airflow is divided into two flow channels, thereby changing the flow channel wind direction to increase the area and effect of absorbing noise energy and improve the noise reduction effect.

[0054] In addition, during the disassembly and assembly of the air duct 10, due to the large size of the equipment, the multiple air ducts 10 in this embodiment are detachably connected, so the air ducts 10 can be installed on the cabin one by one in multiple times. For example, the air duct 10 on the left side is assembled in place first, and then the air duct 10 on the right side is assembled, thereby improving the convenience of assembly and avoiding the influence of the weight and physical strength of the integrated structure on lifting and installation.

[0055] The sound-absorbing layer 20 is a fiber layer. For example, the fiber material is fixed on a porous mesh plate, and the porous mesh plate is then fixed on the inner wall of the pipeline 13. The sound-absorbing layer 20 has a resistive noise reduction effect on the high-frequency noise emitted by the motor.

[0056] In this embodiment, no other structures are set at the air inlet 11, inside the air duct 10, and at the air outlet 12, thereby minimizing the impact on the airflow resistance. This ensures the stable flow of the airflow and improves the power generation efficiency. In this embodiment, the airflow is cut into multiple flow channels, and each pipeline 13 is bent to increase the absorption and consumption of noise power, thereby improving the noise reduction capability.

[0057] The technical solution of the utility model adopts a split connection method to combine multiple air ducts 10, and multiple air inlets 11 are spliced ​​in parallel and connected to the air outlet port of the external air outlet device. The pipeline 13 is an arc or elbow structure. Through the parallel arrangement of multiple arc or elbow structures, the absorption and consumption of noise power are increased while minimizing the impact on wind resistance, thereby improving the noise reduction ability.

[0058] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A wind power generation silencing device, characterized in that: The wind power generation silencer comprises: An air duct (10), wherein one end of the air duct (10) has an air inlet (11), and the other end has an air outlet (12), and a pipeline (13) is provided between the air inlet (11) and the air outlet (12); A sound-absorbing layer (20), the sound-absorbing layer (20) being arranged on the inner wall of the air duct (10); The number of the air ducts (10) is multiple, and the multiple air ducts (10) are arranged in parallel; wherein the multiple air inlets (11) are located on the same plane, and the multiple air outlets (12) are located on the same plane, and the pipeline (13) is arranged in an arc shape.

2. The wind power generation silencer according to claim 1, characterized in that: The edge of the air inlet (11) is provided with a guide layer (30), the guide layer (30) is arranged around the edge of the air inlet (11), and the guide layer (30) is used to guide the air path entering the air inlet (11).

3. The wind power generation silencer device according to claim 2, characterized in that: The guide layer (30) is arranged in a trumpet shape, and the guide layer (30) is arranged to gradually expand in a direction perpendicular to the air inlet (11) and outward from the air inlet (11).

4. The wind power generation silencer device according to claim 3, characterized in that: The guide layer (30) is a curved surface or a flat surface.

5. The wind power generation silencer device according to claim 1, characterized in that: The plurality of air inlets (11) are arranged in parallel, and the plurality of air inlets (11) enclose an air outlet slot that is compatible with an air outlet port of an external air outlet device; a flange (40) is provided along the edge of the air outlet slot, and a mounting hole is provided on the flange (40).

6. The wind power generation silencing device according to claim 1, characterized in that: The sound-absorbing layer (20) is a fiber layer, and the fiber layer is evenly laid on the inner wall of the air duct (10).

7. The wind power generation silencing device according to claim 1, characterized in that: The air inlet (11) and the air outlet (12) are perpendicular to each other.

8. The wind power generation silencer device according to claim 7, characterized in that: The air outlet (12) is arranged downward, and the air inlet (11) is arranged horizontally.

9. The wind power generation noise reduction device according to claim 1, characterized in that: Two adjacent air ducts (10) are detachably connected.

10. A wind power generation device, characterized in that: The wind power generation equipment is applied with the wind power generation silencer device according to any one of claims 1 to 9.

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