Gearbox air-cooled radiator structure and wind power gearbox

Abstract

The utility model relates to the technical field of wind power gear box, specifically disclose a gear box air cooling radiator structure and wind power gear box, wherein, two adjacent radiator assembly are connected each other through fixed mechanism, and fixed mechanism includes at least one connecting assembly, and both ends of connecting assembly are fixedly connected on the shell or fan cover of two adjacent radiator assembly.

Description

Technical Field

[0001] This utility model relates to the field of wind power gearbox technology, and in particular to a wind-cooled radiator structure for a gearbox and a wind power gearbox. Background Technology

[0002] The wind turbine gearbox is a crucial speed-increasing transmission component in a wind turbine generator set. Its main function is to transmit the power generated by the wind turbine rotor under wind force to the generator, enabling it to achieve the corresponding rotational speed. The radiator is one of the essential components ensuring the normal operation of the wind turbine gearbox.

[0003] As turbine power increases, a single wind turbine gearbox typically requires two or more air-cooled radiators to meet its cooling needs. Since these radiators are primarily fixed to the gearbox via brackets and adjacent radiators are arranged independently with spacing, the overall cooling system's support rigidity is relatively weak due to structural space constraints. Furthermore, the high-speed rotation of the air-cooled motor and the fact that existing motor brackets typically only have crossbeams in one direction result in insufficient support rigidity in high-power models, leading to significant motor vibration and poor vibration performance of both the air-cooled motor and the radiator, particularly noticeable in the width direction of the motor bracket. This negatively impacts the overall performance and lifespan of the air-cooled radiator.

[0004] Therefore, there is an urgent need for a gearbox air-cooled radiator structure and a wind power gearbox to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a wind-cooled radiator structure for gearboxes and a wind power gearbox, which can effectively improve the vibration performance of the wind-cooled radiator structure and enhance its operational stability and reliability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a gearbox air-cooled radiator structure, including multiple radiator assemblies. Each radiator assembly includes a housing, an air-cooled motor, a motor bracket, and a fan cover. The fan cover is fixedly installed on the housing, and the air-cooled motor is fixedly installed on the fan cover via the motor bracket. Two adjacent radiator assemblies are connected to each other by a fixing mechanism. The fixing mechanism includes at least one connecting component, and the two ends of the connecting component are respectively fixedly connected to the housing or fan cover of the two adjacent radiator assemblies.

[0008] As a preferred technical solution of the above-mentioned air-cooled radiator structure for gearboxes, the connecting assembly includes a first connecting plate and a second connecting plate. One end of the first connecting plate is fixedly connected to the housing of one of the radiator assemblies, the other end of the first connecting plate is fixedly installed on one end of the second connecting plate, and the other end of the second connecting plate is fixedly connected to the housing of the other radiator assembly.

[0009] As a preferred technical solution of the above-mentioned air-cooled radiator structure for gearbox, the connecting assembly further includes a pad and a fastener. The pad is disposed between the first connecting plate and the second connecting plate, and the fastener passes through the first connecting plate and the pad in sequence and is connected to the second connecting plate.

[0010] As a preferred technical solution for the above-mentioned air-cooled radiator structure for gearboxes, the fixing mechanism is integrally formed with the outer shell of the two adjacent radiator assemblies.

[0011] As a preferred technical solution for the above-mentioned air-cooled radiator structure for gearboxes, the upper and lower surfaces of the fixing mechanism are respectively flush with the corresponding surfaces of the outer shells of the two adjacent radiator assemblies.

[0012] As a preferred technical solution of the above-mentioned air-cooled radiator structure for gearbox, the motor bracket has at least three extension arms, the first ends of each extension arm are connected together, and the end of each extension arm is fixedly connected to the inner wall of the fan housing, and the air-cooled motor is fixedly connected to the center position of the motor bracket.

[0013] As a preferred technical solution for the above-mentioned air-cooled radiator structure for gearboxes, the motor bracket has four extension arms and the motor bracket has a cross-shaped structure.

[0014] As a preferred technical solution of the above-mentioned air-cooled radiator structure for gearboxes, the radiator assembly further includes heat dissipation plates, the housing is provided with air ducts, and the heat dissipation plates are disposed in the air ducts.

[0015] As a preferred technical solution for the above-mentioned air-cooled radiator structure for gearboxes, a reinforcing rib is provided at the connection position between the fan housing and the motor bracket.

[0016] On the other hand, this utility model also provides a wind turbine gearbox, including a housing and a gearbox air-cooled radiator structure as described in any of the above embodiments, wherein a plurality of the radiator assemblies are sequentially and spaced apart on the housing.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model provides a gearbox air-cooled radiator structure and a wind turbine gearbox. The gearbox air-cooled radiator structure includes multiple radiator assemblies, which are sequentially and spaced apart on the wind turbine gearbox. Each radiator assembly includes: a housing, heat sink fins, an air-cooled motor, a motor bracket, a fan housing, a blade assembly, and a radiator support. The fan housing is fixedly mounted on the housing, and the air-cooled motor is fixedly mounted on the bottom of the fan housing via the motor bracket. An air duct is provided inside the housing. The blade assembly is fixedly connected to the output shaft of the air-cooled motor and located within the air duct. The heat sink fins are disposed in the air duct. The radiator support is fixedly connected between the housing and the wind turbine gearbox. Adjacent radiator assemblies are interconnected by a fixing mechanism. The fixing mechanism includes at least one connecting component, and the two ends of the connecting component are respectively fixedly connected to the housing or fan housing of the two adjacent radiator assemblies. This design, by introducing a fixing mechanism between two adjacent radiators, rigidly connects the originally independent radiator assemblies together to form an integral frame. This effectively improves the vibration performance of the air-cooled radiator structure and greatly enhances the structural rigidity and operational stability of the entire cooling system. At the same time, during the operation of the wind turbine generator, multiple radiator assemblies will be subjected to vibration simultaneously. The fixing mechanism can further suppress the relative vibration between the various radiator assemblies, prevent them from interfering with each other or colliding due to different vibration frequencies, and reduce noise and fatigue damage. Attached Figure Description

[0019] Figure 1 A first structural schematic diagram of the air-cooled radiator structure for gearbox provided by this utility model;

[0020] Figure 2 A second structural schematic diagram of the air-cooled radiator structure for gearboxes provided by this utility model;

[0021] Figure 3 A third structural schematic diagram of the air-cooled radiator structure for gearboxes provided by this utility model;

[0022] Figure 4 A fourth structural schematic diagram of the air-cooled radiator structure for gearboxes provided by this utility model;

[0023] Figure 5 for Figure 4 A magnified view of part A in the middle;

[0024] Figure 6 The fifth structural diagram of the air-cooled radiator structure for gearbox provided by this utility model.

[0025] in:

[0026] 100. Radiator assembly;

[0027] 1. Outer casing; 2. Heat sink; 3. Air-cooled motor; 4. Motor bracket; 5. Fan cover; 6. First connecting plate; 7. Second connecting plate; 8. Spacer; 9. Fastener. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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 and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0030] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 6As shown, this embodiment provides a gearbox air-cooled radiator structure, which includes multiple radiator assemblies 100. Each radiator assembly 100 includes: a housing 1, a heat sink 2, an air-cooled motor 3, a motor bracket 4, a fan housing 5, a blade assembly, and a radiator support. The fan housing 5 is fixedly mounted on the housing 1, and the air-cooled motor 3 is fixedly mounted on the fan housing 5 via the motor bracket 4. An air duct is provided inside the housing 1, and the blade assembly is fixedly connected to the output shaft of the air-cooled motor 3 and located within the air duct. The heat sink 2 is disposed in the air duct, and the radiator support is fixedly connected between the housing 1 and the wind turbine gearbox. Two adjacent radiator assemblies 100 are connected to each other by a fixing mechanism. The fixing mechanism includes at least one connecting component, and the two ends of the connecting component are respectively fixedly connected to the housing 1 or the fan housing 5 of the two adjacent radiator assemblies 100. This design, by introducing a fixing mechanism between two adjacent radiators, rigidly connects the originally independent radiator assemblies 100 together to form an integral frame. This effectively improves the vibration performance of the air-cooled radiator structure and greatly enhances the structural rigidity and operational stability of the entire heat dissipation system. At the same time, during the operation of the wind turbine generator set, multiple radiator assemblies 100 will be subjected to vibration simultaneously. The fixing mechanism can further suppress the relative vibration between the individual radiator assemblies 100, prevent them from interfering with each other or colliding due to different vibration frequencies, and reduce noise and fatigue damage.

[0034] Specifically, this embodiment provides the following technical solution: the connecting component includes a first connecting plate 6 and a second connecting plate 7. One end of the first connecting plate 6 is fixedly connected to the housing 1 of one of the heat sink assemblies 100, the other end of the first connecting plate 6 is fixedly installed on one end of the second connecting plate 7, and the other end of the second connecting plate 7 is fixedly connected to the housing 1 of the other heat sink assembly 100.

[0035] Furthermore, the connecting assembly also includes a spacer 8 and a fastener 9. The spacer 8 is disposed between the first connecting plate 6 and the second connecting plate 7, and the fastener 9 passes through the first connecting plate 6 and the spacer 8 in sequence and is connected to the second connecting plate 7. With this configuration, a designable structural module is introduced into the rigid connection between two adjacent heat sink assemblies 100 through the structure of "first connecting plate 6-spacer 8-second connecting plate 7". This effectively isolates or attenuates the direct transmission of vibration and thermal expansion stress, and facilitates manufacturing, installation and maintenance.

[0036] In this embodiment, the fastener 9 includes a bolt, a first washer, a second washer, and a nut. The bolt passes sequentially through the first connecting plate 6, the washer 8, and the second connecting plate 7, and is threadedly connected to the nut. The first washer is disposed between the bolt head and the first connecting plate 6, and the second washer is disposed between the second connecting plate 7 and the nut. The washer 8 is configured to be selectively made of rigid or flexible material. This configuration allows for the selection of appropriate materials for the washer 8 according to different design requirements, enabling optimal transmission of force and vibration between adjacent radiator assemblies 100. Specifically, the connection stiffness and damping characteristics between the first connecting plate 6 and the second connecting plate 7 can be adjusted by replacing the intermediate washer 8, providing significant flexibility, strengthening the connection stiffness between two adjacent radiator assemblies 100, and optimizing the vibration performance of multiple radiator assemblies 100.

[0037] It should be noted that when the pad 8 is made of rigid material, it is a metal block; when the pad 8 is made of flexible material, it is an elastic block made of rubber, engineering plastics or composite materials. The selection is mainly based on the adaptability of the structural strength, natural frequency, vibration amplitude and other properties of the two adjacent radiator assemblies 100.

[0038] Optionally, the fixing mechanism is integrally formed with the housing 1 of the two adjacent radiator assemblies 100. This configuration makes the adjacent radiator assemblies 100 and the fixing mechanism form a complete, seamless rigid whole, allowing for smoother and more continuous force transmission, and greatly improving the structural stiffness and strength of the entire module under vibration and impact loads.

[0039] Furthermore, the upper and lower surfaces of the fixing mechanism are flush with the corresponding surfaces of the outer shells 1 of the two adjacent radiator assemblies 100, so that after the multiple radiator assemblies 100 are installed side by side, their top and bottom surfaces form a smooth and flat plane. This effectively reduces the turbulence and resistance when air flows through the array of radiator assemblies 100, creates a better aerodynamic environment, helps to improve the efficiency of cooling air passage, and indirectly improves the overall heat dissipation performance.

[0040] Optionally, the motor bracket 4 has at least three extension arms, with the heads of each extension arm connected together and the ends of each extension arm fixedly connected to the inner wall of the fan housing 5. The air-cooled motor 3 is fixedly connected to the center of the motor bracket 4. With this configuration, the load (gravity of the air-cooled motor 3 and vibration inertial force) borne by the motor bracket 4 is effectively transferred and distributed to the larger fan housing 5 through a rigid connection, forming a better force flow transmission path.

[0041] Furthermore, the motor bracket 4 has four extension arms and a cross-shaped structure. This configuration provides radial stiffness through the planar properties of the cross-shaped structure, while its three-dimensional support form (connected to the bottom of the fan housing 5) provides axial stiffness. In other words, the cross-shaped motor bracket 4 simultaneously enhances the support stiffness of the air-cooled motor 3 in both the axial and radial directions, ensuring smoother operation of the air-cooled motor 3 under complex stress conditions, improving its vibration performance, and extending the service life of the motor and the entire cooling system.

[0042] Optionally, the four extension arms of the motor bracket 4 are radially symmetrically distributed. This radially symmetrical design ensures that the stiffness and strength distribution of the motor bracket 4 is consistent in all directions, providing uniform and stable support regardless of whether the blade assembly is starting, stopping, or being impacted by airflow from different directions, preventing localized stress concentration caused by uneven stiffness. At the same time, the symmetrical structure helps to more evenly disperse and counteract the periodic vibrations generated by the air-cooled motor 3 during operation, thereby more effectively reducing the vibration and noise of the entire air-cooled radiator structure.

[0043] Optionally, in order to improve the support stability of the motor bracket 4 and further improve the vibration performance of the air-cooled motor 3, a reinforcing rib is provided at the connection position between the fan housing 5 and the motor bracket 4.

[0044] This embodiment also provides a wind turbine gearbox, including a housing and the gearbox air-cooled radiator structure described above, with multiple radiator assemblies 100 arranged sequentially and at intervals on the housing.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A structure for a wind-cooled radiator for a gearbox, characterized in that, The device includes multiple radiator assemblies (100), each radiator assembly (100) including a housing (1), an air-cooled motor (3), a motor bracket (4), and a fan housing (5). The fan housing (5) is fixedly installed on the housing (1), and the air-cooled motor (3) is fixedly installed on the fan housing (5) through the motor bracket (4). Two adjacent radiator assemblies (100) are connected to each other through a fixing mechanism. The fixing mechanism includes at least one connecting component, and the two ends of the connecting component are respectively fixedly connected to the housing (1) or the fan housing (5) of the two adjacent radiator assemblies (100).

2. The air-cooled radiator structure for gearboxes according to claim 1, characterized in that, The connecting assembly includes a first connecting plate (6) and a second connecting plate (7). One end of the first connecting plate (6) is fixedly connected to the housing (1) of one of the heat sink assemblies (100), and the other end of the first connecting plate (6) is fixedly installed on one end of the second connecting plate (7). The other end of the second connecting plate (7) is fixedly connected to the housing (1) of the other heat sink assembly (100).

3. The air-cooled radiator structure for gearboxes according to claim 2, characterized in that, The connecting assembly further includes a pad (8) and a fastener (9). The pad (8) is disposed between the first connecting plate (6) and the second connecting plate (7). The fastener (9) passes through the first connecting plate (6) and the pad (8) in sequence and is connected to the second connecting plate (7).

4. The air-cooled radiator structure for gearboxes according to claim 1, characterized in that, The fixing mechanism is integrally formed with the housing (1) of the two adjacent heat sink assemblies (100).

5. The air-cooled radiator structure for gearboxes according to claim 4, characterized in that, The upper and lower surfaces of the fixing mechanism are flush with the corresponding surfaces of the housings (1) of the two adjacent radiator assemblies (100).

6. The air-cooled radiator structure for gearboxes according to claim 1, characterized in that, The motor bracket (4) has at least three extension arms, the first ends of each extension arm are connected together, and the end of each extension arm is fixedly connected to the inner wall of the fan housing (5). The air-cooled motor (3) is fixedly connected to the center of the motor bracket (4).

7. The air-cooled radiator structure for gearboxes according to claim 6, characterized in that, The motor bracket (4) has four extension arms and the motor bracket (4) has a cross-shaped structure.

8. The gearbox air-cooled radiator structure according to any one of claims 1-7, characterized in that, The radiator assembly (100) further includes a heat sink plate (2), and the housing (1) has an air duct inside, with the heat sink plate (2) disposed in the air duct.

9. The gearbox air-cooled radiator structure according to any one of claims 1-7, characterized in that, The connection between the fan housing (5) and the motor bracket (4) is provided with reinforcing ribs.

10. A wind turbine gearbox, characterized in that, The gearbox includes a housing and a gearbox air-cooled radiator structure as described in any one of claims 1-9, wherein a plurality of the radiator assemblies (100) are sequentially and spaced apart on the housing.

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