Cooling device for gearbox of wind generating set

Abstract

The utility model relates to the technical field of gear boxes, in particular to a wind generating set gear box cooling device which comprises a gear box body which is independently and fixedly arranged and provided with an oil inlet and an oil outlet. The mounting mechanism is mounted on the gearbox body; the oil guide tank is mounted on the mounting mechanism, and oil passing pipes are mounted at a plurality of through holes formed in the oil guide tank at equal angles respectively; a plurality of inner holes are formed in the oil transfer box at equal angles, the inner holes of the oil transfer box and the oil passing pipes are installed in a one-to-one correspondence mode, and an oil return pipe is arranged on the oil transfer box and communicates with the oil inlet of the gearbox body; the heat exchange pipe is installed on the oil transfer tank, the heat exchange pipe is of an M-shaped structure, and a straight pipe section of the M-shaped structure sequentially penetrates through inner cavities of the multiple oil passing pipes; the switching mechanism is respectively communicated with the oil guide tank and the oil outlet of the gear box body; and the heat dissipation efficiency is high.

Description

A cooling device for a wind turbine gearbox Technical Field

[0001] This utility model relates to the technical field of gearboxes, and in particular to a cooling device for a wind turbine gearbox. Background Technology

[0002] With the rapid development of the renewable energy industry, wind power, as an important component of clean energy, is playing an increasingly vital role in the global energy structure. During long-term high-load operation, the working condition of the gearbox—the core transmission component of a wind turbine—directly affects the overall operating efficiency and reliability of the unit. Because the gearbox withstands significant torque and friction during operation, it generates a large amount of heat. If heat dissipation and cooling are not carried out promptly and effectively, it can easily lead to increased lubricating oil temperature, decreased lubrication performance, and consequently, serious consequences such as gear wear, bearing failure, and even equipment shutdown. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this utility model provides a wind turbine gearbox cooling device.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model discloses a wind turbine gearbox cooling device, comprising:

[0006] The gearbox body is independently and fixedly installed, and the gearbox body is equipped with an oil inlet and an oil outlet.

[0007] The mounting mechanism is installed on the gearbox body;

[0008] An oil guide tank is installed on the mounting mechanism, and oil pipes are installed at multiple through holes set at equal angles on the oil guide tank.

[0009] The rotating oil tank has multiple inner holes at equal angles, and each inner hole of the rotating oil tank is installed in a corresponding manner with multiple oil pipes. The rotating oil tank is equipped with an oil return pipe, which is connected to the oil inlet of the gearbox body.

[0010] The heat exchange tubes are installed on the oil tank and are configured with an M-shaped structure. The straight sections of the M-shaped tubes pass through the inner cavities of multiple oil passage pipes in sequence.

[0011] The adapter is connected to the oil outlet of both the oil guide tank and the gearbox body.

[0012] Furthermore, the switching agencies include:

[0013] The sealing cover is installed with the oil guide box via a threaded connection, and a sealing ring is provided at the connection between the sealing cover and the oil guide box.

[0014] The adapter pipe is installed in the assembly hole of the sealing cover and is connected to the oil outlet of the gearbox body.

[0015] Furthermore, the transfer pipe and sealing cap are rotated and installed.

[0016] Furthermore, the outer wall of the sealing cap is designed with a regular polygonal structure.

[0017] Furthermore, the installation mechanism includes:

[0018] The mounting plate is designed with an L-shaped structure and is equipped with a positioning ring. The oil tank is connected to the positioning ring.

[0019] Multiple support blocks are installed at equal angles on the outer wall of the positioning ring, and the support blocks are connected to the oil guide tank;

[0020] A threaded rod is installed on the oil guide box, and the threaded rod passes through the hole slot of the support block. A nut is installed on the threaded rod.

[0021] Furthermore, a retaining ring is provided on the mounting plate, which is connected to the oil guide box.

[0022] Furthermore, the mounting plate is provided with assembly through holes.

[0023] Furthermore, a support ring is provided inside the oil guide tank, and a filter element is installed on the support ring.

[0024] In the above technical solution, the wind turbine gearbox cooling device provided by this utility model has the following beneficial effects:

[0025] The gearbox body's oil inlet and outlet provide the basic path for lubricating oil circulation. The mounting mechanism securely connects the gearbox body to the oil guide tank, providing reliable support for the cooling system. The oil guide tank, as the first-stage collection container, with its evenly distributed through holes and oil pipes, not only guides the lubricating oil flow in an orderly manner but also significantly increases the heat dissipation area, accelerating heat exchange with the air. The oil transfer tank performs diversion and convergence functions; its multiple inner holes precisely correspond to the oil pipes, ensuring efficient distribution and collection of lubricating oil. The return oil pipe precisely returns the cooled lubricating oil to the gearbox body, ensuring smooth circulation. The innovative M-shaped structure of the heat exchange tube forms a sleeve-type heat exchange with the oil pipe. The multi-segment straight pipe and elbow design increases the flow path and residence time of the coolant within the pipe, enhancing the heat exchange effect. The transfer mechanism precisely guides the lubricating oil into the cooling system. All components work closely together, enabling this cooling device to achieve efficient heat exchange, effectively reducing the lubricating oil temperature in the gearbox body, ensuring stable gearbox operation, extending service life, reducing maintenance frequency, and improving the overall reliability and economy of the wind turbine generator set. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0027] Figure 1 is a schematic diagram of the main structure of this utility model;

[0028] Figure 2 is a schematic diagram of the installation mechanism of this utility model;

[0029] Figure 3 is a partial structural schematic diagram of this utility model;

[0030] Figure 4 is a schematic diagram of the filter element installation structure of this utility model;

[0031] Figure 5 is a schematic diagram of the exploded structure of this utility model;

[0032] The following are labeled in the attached diagram: 1. Gearbox body; 2. Mounting mechanism; 21. Mounting plate; 22. Support block; 23. Threaded rod; 24. Nut; 25. Retaining ring; 26. Positioning ring; 3. Oil guide tank; 31. Support ring; 32. Filter element; 4. Oil passage pipe; 5. Oil transfer tank; 6. Oil return pipe; 7. Heat exchange pipe; 8. Adapter mechanism; 81. Sealing cover; 82. Adapter pipe. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0034] See Figure 1-5;

[0035] A wind turbine gearbox cooling device according to an embodiment of the present invention includes:

[0036] The gearbox body 1 is independently and fixedly installed, and the gearbox body 1 is provided with an oil inlet and an oil outlet respectively;

[0037] Mounting mechanism 2 is mounted on gearbox body 1;

[0038] The oil guide box 3 is installed on the mounting mechanism 2 and serves as the first-stage collection container for lubricating oil after it is output from the gearbox body. Multiple through holes set at equal angles on the oil guide box 3 are respectively equipped with oil pipes 4. The oil pipes 4 serve as the lubricating oil delivery channel and also increase the heat dissipation area and accelerate the heat exchange efficiency with the air.

[0039] The oil tank 5 serves as a diversion and convergence point. It has multiple inner holes at equal angles, and each inner hole of the oil tank 5 corresponds to a different oil pipe 4. The oil tank 5 is equipped with a return oil pipe 6, which is connected to the oil inlet of the gearbox body 1 to return the cooled lubricating oil to the gearbox body 1.

[0040] The heat exchange tube 7, installed on the oil tank 5, is a key component for cooling the lubricating oil. The heat exchange tube 7 is designed with an M-shaped structure, consisting of multiple straight pipes and elbows. The straight pipes of the M-shaped structure pass through the inner cavities of multiple oil pipes 4 in sequence, forming a shell-and-tube heat exchange structure.

[0041] The adapter 8 is connected to the oil outlet of the oil guide box 3 and the gearbox body 1 respectively, and is used to guide the lubricating oil into the cooling system.

[0042] By adopting the above technical solution, the oil inlet and outlet of the gearbox body 1 realize the basic path for lubricating oil circulation. The mounting mechanism 2 firmly connects the gearbox body 1 and the oil guide tank 3, providing reliable support for the cooling system. The oil guide tank 3, as the first-stage collection container, with its equally angled through holes and oil pipes 4, not only guides the flow of lubricating oil in an orderly manner but also significantly increases the heat dissipation area, accelerating heat exchange with the air. The oil transfer tank 5 performs the functions of diversion and convergence, with its multiple inner holes precisely corresponding to the oil pipes 4, ensuring efficient distribution and collection of lubricating oil. The return oil pipe 6 returns the cooled oil... The lubricating oil is precisely returned to the gearbox body 1, ensuring smooth circulation. The innovative M-shaped structure of the heat exchange tube 7 and the oil pipe 4 form a shell-and-tube heat exchange. The multi-segment straight pipe and elbow design increases the flow path and residence time of the coolant in the pipe, enhancing the heat exchange effect. The transfer mechanism 8 precisely guides the lubricating oil into the cooling system. All components work closely together to enable the cooling device to achieve efficient heat exchange, effectively reduce the lubricating oil temperature of the gearbox body 1, ensure stable operation of the gearbox, extend service life, reduce maintenance frequency, and improve the overall reliability and economy of the wind turbine generator set.

[0043] As a preferred embodiment of the above technical solution, as shown in Figures 1 to 5, the adapter 8 includes:

[0044] The sealing cover 81 is installed with the oil guide box 3 by thread engagement, and a sealing ring is provided at the connection between the sealing cover 81 and the oil guide box 3.

[0045] The adapter pipe 82 is installed in the assembly hole of the sealing cover 81, and the adapter pipe 82 is connected to the oil outlet of the gearbox body 1.

[0046] The adapter pipe 82 and the sealing cap 81 are rotatably installed;

[0047] The outer wall of the sealing cap 81 is designed with a regular polygonal structure;

[0048] In this embodiment, the threaded fit between the sealing cap 81 and the oil guide box 3, along with the sealing ring, ensures that the lubricating oil does not leak during transportation, avoiding contamination and loss, and ensuring the reliability of the cooling system. The rotating installation design of the adapter pipe 82 and the sealing cap 81 ensures that the adapter pipe 82 will not interfere with the process when the sealing cap 81 is disassembled and assembled from the oil guide box 3. The regular polygonal structure of the outer wall of the sealing cap 81 provides a stable point of force for the installation tool, making it easy for operators to quickly and accurately complete the installation and disassembly of the sealing cap 81, thus improving maintenance efficiency.

[0049] As a preferred embodiment of the above technical solution, as shown in Figures 1 to 5, the installation mechanism 2 includes:

[0050] Mounting plate 21 is configured as an L-shaped structure. Mounting plate 21 is provided with assembly through holes and positioning ring 26 is provided on mounting plate 21. Rotary oil tank 5 is connected to positioning ring 26.

[0051] Multiple support blocks 22 are installed at equal angles on the outer wall of the positioning ring 26, and the support blocks 22 are connected to the oil guide box 3;

[0052] A threaded rod 23 is installed on the oil guide box 3, and the threaded rod 23 passes through the hole slot of the support block 22. A nut 24 is installed on the threaded rod 23.

[0053] In this embodiment, the L-shaped mounting plate 21 is easy to fit and install with the gearbox body 1. The assembly through holes on it can be adapted to fixing bolts of different specifications to achieve quick installation and fixing. The positioning ring 26 cooperates with the oil tank 5 to accurately define the installation position of the oil tank 5 and ensure the accuracy of the connection between the components. Multiple support blocks 22 distributed at equal angles connect the positioning ring 26 and the oil guide box 3, evenly distributing the weight of the oil guide box 3 and the internal lubricating oil, enhancing the overall structural stability. The threaded rod 23 passes through the hole groove of the support block 22 and cooperates with the nut 24. During the operation of the equipment, it can effectively prevent the oil guide box 3 from loosening and shifting, ensuring the reliable operation of the cooling system.

[0054] As a preferred embodiment of the above technical solution, as shown in Figures 1 to 5, a fixing ring 25 is provided on the mounting plate 21, and the fixing ring 25 is connected to the oil guide box 3.

[0055] In this embodiment, the fixing ring 25 is closely fitted with the oil guide box 3, which can effectively limit the displacement of the oil guide box 3 on the mounting plate 21. It corresponds to the positioning function of the positioning ring 26 for the rotating oil box 5, and simultaneously provides precise positioning and stable support for the key components of the cooling device from both the upper and lower ends, ensuring that the oil guide box 3 always remains stable during equipment operation.

[0056] As a preferred embodiment of the above technical solution, as shown in Figures 4 and 5, a support ring 31 is provided inside the oil guide tank 3, and a filter element 32 is installed on the support ring 31.

[0057] In this embodiment, the support ring 31 provides a stable mounting base for the filter element 32, ensuring that the filter element 32 remains stable under the impact of lubricating oil flow, effectively preventing the filter element 32 from shifting or being damaged. The filter element 32 can perform preliminary filtration of the lubricating oil output from the gearbox body 1, intercepting metal debris, impurity particles, etc., preventing these impurities from entering the oil pipe 4, oil tank 5, and heat exchange pipe 7, avoiding the risk of leakage caused by impurities clogging the pipes or scratching the inner wall of the pipes. At the same time, the filtered lubricating oil can participate in the cooling cycle more cleanly, effectively reducing the wear of gears, bearings, and other components inside the gearbox body 1, reducing the equipment failure rate, and extending the service life of the gearbox and the entire cooling system.

[0058] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A cooling device for a wind turbine generator gearbox, characterized in that, include: A gearbox body (1) is independently and fixedly installed, and an oil inlet and an oil outlet are respectively provided on the gearbox body (1); a mounting mechanism (2) is installed on the gearbox body (1); an oil guide box (3) is installed on the mounting mechanism (2), and an oil pipe (4) is installed at a plurality of through holes set at equal angles on the oil guide box (3); a rotating oil tank (5) has a plurality of inner holes set at equal angles, and the plurality of inner holes of the rotating oil tank (5) are connected to the plurality of oil pipes. The pipes (4) are installed one-to-one. The oil return pipe (6) is provided on the oil tank (5) and the oil return pipe (6) is connected to the oil inlet of the gearbox body (1). The heat exchange pipe (7) is installed on the oil tank (5) and the heat exchange pipe (7) is set as an M-shaped structure. The straight pipe section of the M-shaped structure passes through the inner cavity of multiple oil passage pipes (4) in sequence. The connecting mechanism (8) is connected to the oil guide box (3) and the oil outlet of the gearbox body (1) respectively.

2. The wind turbine gearbox cooling device as described in claim 1, characterized in that, The adapter mechanism (8) includes: a sealing cover (81), which is installed with the oil guide box (3) by threaded connection, and a sealing ring is provided at the connection between the sealing cover (81) and the oil guide box (3); and an adapter pipe (82), which is installed in the assembly hole of the sealing cover (81) and is connected to the oil outlet of the gearbox body (1).

3. The wind turbine gearbox cooling device as described in claim 2, characterized in that, The adapter pipe (82) is rotatably mounted to the sealing cap (81).

4. The wind turbine gearbox cooling device as described in claim 2, characterized in that, The outer wall of the sealing cap (81) is configured as a regular polygonal structure.

5. The wind turbine gearbox cooling device as described in claim 1, characterized in that, The installation mechanism (2) includes: an installation plate (21) configured as an L-shaped structure, and a positioning ring (26) is provided on the installation plate (21), and the oil tank (5) is connected to the positioning ring (26); multiple support blocks (22) are installed at equal angles on the outer wall of the positioning ring (26), and the support blocks (22) are connected to the oil guide box (3); a threaded rod (23) is installed on the oil guide box (3), and the threaded rod (23) passes through the hole groove of the support block (22), and a nut (24) is installed on the threaded rod (23).

6. The wind turbine gearbox cooling device as described in claim 5, characterized in that, A fixing ring (25) is provided on the mounting plate (21), and the fixing ring (25) is connected to the oil guide box (3).

7. The wind turbine gearbox cooling device as described in claim 5, characterized in that, The mounting plate (21) is provided with assembly through holes.

8. The wind turbine gearbox cooling device as described in claim 1, characterized in that, The oil guide box (3) is provided with a support ring (31), and a filter element (32) is installed on the support ring (31).

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