A wind turbine drive train and a wind turbine

Abstract

The utility model relates to the field of wind turbine generator, concretely is a kind of wind turbine generator transmission chain and wind turbine generator.It includes generator, cooling component, tower and wind wheel component, and gear box and shaft coupling are sequentially communicated on generator;Cooling component includes main frame, upper frame being set on main frame, air inlet pipe being set on upper frame, intermediate pipe being communicated on air inlet pipe, multiple air outlet pipes being communicated in intermediate pipe, multiple cooling cylinders being detachably and evenly arranged on cooling pipe, and lower wind guide frame being set on main frame;Multiple fins are evenly distributed on the circumferential surface of multiple cooling cylinders.Tower is provided with cabin, and generator is arranged on cabin;Wind wheel component is arranged on shaft coupling.The utility model divides the flow direction of gas into multiple by setting air inlet pipe, intermediate pipe and multiple air outlet pipes communicated with each other, makes multiple gas streams correspondingly flow through multiple cooling cylinders, and improves heat exchange area by cooling cylinder, to improve the cooling range of cooling oil in cooling component.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine generators, and in particular to a wind turbine generator transmission chain and a wind turbine generator. Background Technology

[0002] Wind turbines are the core equipment that converts wind energy into electrical energy. A wind turbine consists of a rotor system, a transmission chain system, a yaw system, a hydraulic and braking system, an engine system, a control and safety system, and a support system.

[0003] Chinese Patent No. CN218844495U discloses a wind turbine drivetrain and a wind turbine, relating to the field of wind turbine generator sets. The wind turbine drivetrain includes a split gearbox and a generator assembly. The split gearbox has an input shaft and at least two output shafts. The input shaft is used to connect to the wind turbine. The generator assembly generates electricity and outputs current. The low-speed end of the speed-increasing gearbox is connected to each of the output shafts. The wind turbine generator set includes the aforementioned drivetrain. This technical solution features a small speed-increasing gearbox and generator, simple manufacturing process, and low cost. During wind power generation, the drivetrain system generates a large amount of heat.

[0004] However, the above technical solution has the following shortcomings: while setting up multiple speed-increasing gearboxes and generators increases the user's maintenance time, setting up multiple generators requires coordinating the current generated by multiple generators, which results in the cost of power generation being higher than the cost of using a large gearbox. Therefore, it is impossible to remove the heat generated by the transmission chain system at a lower cost. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a wind turbine drive chain and wind turbine unit that divides the flow direction of gas into multiple directions by setting up interconnected air inlet pipes, intermediate pipes and multiple air outlet pipes, allowing multiple airflows to flow one-to-one through multiple cooling cylinders, and increasing the heat exchange area through the cooling cylinders, thereby improving the cooling effect of the cooling oil in the cooling components.

[0006] On one hand, this utility model proposes a wind turbine transmission chain, including: a generator, on which a gearbox and a coupling are connected in sequence; a cooling assembly, including a main frame, an upper frame mounted on the main frame, an air inlet pipe mounted on the upper frame, an intermediate pipe connected to the air inlet pipe, multiple air outlet pipes evenly connected to the intermediate pipe, a cooling pipe mounted on the main frame, multiple cooling cylinders detachably and evenly mounted on the cooling pipes, and a lower air guide frame mounted on the main frame; multiple cooling cylinders have multiple fins evenly distributed on their circumference.

[0007] Preferably, the cooling pipe is a continuous curved pipe, and the cooling pipe has multiple vertically distributed connecting pipe sections.

[0008] Preferably, multiple cooling cylinders are distributed one-to-one with multiple connecting pipe sections, and multiple air outlet pipes are distributed one-to-one with multiple cooling cylinders above them.

[0009] Preferably, a copper-based brazing filler metal is provided between the cooling cylinder and the connecting pipe.

[0010] Preferably, sealing plates are bolted to both sides of the main frame.

[0011] On the other hand, this utility model also proposes a wind turbine generator set, which includes the above-mentioned wind turbine generator set transmission chain, and further includes: a tower on which a nacelle is provided, and a generator is provided on the nacelle; and a wind turbine assembly, which is provided on a coupling.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects: In use, after the cooling oil flows out of the gearbox, the high-pressure oil pump built into the gearbox sends the hot oil toward the cooling assembly. A filter assembly is connected to the cooling pipe, which filters the cooling oil. Then the hot oil flows through the cooling pipe, which is equipped with multiple cooling cylinders. The fins on the surface of the cylinders increase the heat exchange area between the hot oil and the outside air. At the same time, the distribution direction of the fins is consistent with the air flow direction to avoid the fins affecting the air flow rate, thereby increasing the flow speed of the hot air near the cooling pipe and improving the cooling speed of the hot oil. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the cooling component in an embodiment of the present invention; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0014] Reference numerals: 1. Tower; 2. Wind turbine assembly; 3. Nacelle; 4. Main frame; 5. Upper frame; 6. Inlet duct; 7. Intermediate duct; 8. Outlet duct; 9. Sealing plate; 10. Cooling pipe; 11. Lower air guide frame; 12. Cooling cylinder; 121. Fin. Detailed Implementation

[0015] Example 1

[0016] like Figures 1-3As shown, this embodiment proposes a wind turbine generator set, including a generator, a cooling assembly, a tower 1, and a wind turbine assembly 2. A gearbox and a coupling are sequentially connected to the generator. The cooling assembly includes a main frame 4, an upper frame 5 mounted on the main frame 4, an air inlet pipe 6 mounted on the upper frame 5, a middle pipe 7 connected to the air inlet pipe 6, multiple air outlet pipes 8 evenly connected to the middle pipe 7, a cooling pipe 10 mounted on the main frame 4, multiple cooling cylinders 12 detachably and evenly arranged on the cooling pipes 10, and a lower air guide frame 11 mounted on the main frame 4. Multiple fins 121 are evenly distributed on the circumference of the multiple cooling cylinders 12. The cross-sectional area of ​​the air inlet pipe 6 is consistent with the sum of the cross-sectional areas of the multiple cooling cylinders 12, thereby ensuring that the flow velocity of the gas blowing into the air inlet pipe 6 is approximately consistent with the flow velocity of the gas flowing out from the air outlet pipes 8, improving the operability of the cooling assembly. A nacelle 3 is mounted on the tower 1, and the generator is mounted on the nacelle 3; the wind turbine assembly 2 is mounted on the coupling.

[0017] In this embodiment, after the cooling oil flows out of the gearbox, the high-pressure oil pump built into the gearbox sends the hot oil toward the cooling assembly. A filter assembly is connected to the cooling pipe 10, which filters the cooling oil. Then the hot oil flows through the cooling pipe 10. The cooling pipe 10 is equipped with multiple cooling cylinders 12, which increase the heat exchange area between the hot oil and the outside air through fins 121 on their surface. At the same time, the distribution direction of the fins 121 is consistent with the air flow direction to avoid the fins 121 affecting the air flow rate, thereby increasing the flow speed of the hot air near the cooling pipe 10 and increasing the cooling speed of the hot oil. This allows the cooling oil to flow to the transmission chain assembly at a lower temperature, increasing the cooling effect of the transmission chain assembly under the action of the cooling oil.

[0018] Example 2

[0019] like Figure 1 and Figure 2 As shown in the figure, in this embodiment of the wind turbine, compared with the first embodiment, the cooling pipe 10 is a continuous curved pipe with multiple vertically distributed connecting pipe sections. The continuous curved pipe increases the flow length of hot oil at the main frame 4 and increases the time for hot oil to exchange heat with the outside air, thereby improving the cooling effect of hot oil.

[0020] Multiple cooling cylinders 12 are distributed one-to-one with multiple connecting pipe sections, and multiple air outlet pipes 8 are distributed one-to-one above multiple cooling cylinders 12. The multiple air outlet pipes 8 are vertically distributed, so that the multiple air outlet pipes 8 are all vertically directed towards blowing air. The air used for cooling flows from one end of the cooling cylinder 12 to the other end. Multiple fins 121 are also vertically and evenly distributed on the circumference of the cooling cylinder 12. Therefore, when the gas flows through the cooling cylinder 12, the interference of the fins 121 on the airflow can be minimized. At the same time, the surface of the fins 121 can always be in contact with the flowing airflow, thereby increasing the heat exchange area between the hot oil and the outside air and improving the cooling speed of the hot oil.

[0021] Example 3

[0022] like Figure 1 and Figure 2 As shown, in this embodiment of the wind turbine, compared with the first embodiment, the cooling cylinder 12 and the connecting pipe are welded together by copper-based brazing filler metal. The copper-based brazing filler metal has no heat loss after welding, thereby ensuring the cooling speed of the hot oil. The main frame 4 is bolted to the two sides with sealing plates 9. When maintaining the cooling components, the cooling cylinder and its internal structure can be maintained by opening the sealing plates. When using the cooling components, the sealing plates 9 are made of heat insulation material, thereby preventing heat from passing through the sealing plates 9 to the interior of the nacelle 3 through heat conduction.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A wind turbine drive train, characterized in that, include: A generator, on which a gearbox and a coupling are connected in sequence; The cooling assembly includes a main frame (4), an upper frame (5) mounted on the main frame (4), an air inlet pipe (6) mounted on the upper frame (5), an intermediate pipe (7) connected to the air inlet pipe (6), multiple air outlet pipes (8) evenly connected to the intermediate pipe (7), a cooling pipe (10) mounted on the main frame (4), multiple cooling cylinders (12) detachably and evenly mounted on the cooling pipe (10), and a lower air guide frame (11) mounted on the main frame (4); multiple cooling cylinders (121) are evenly distributed on their circumference.

2. The wind turbine drive train according to claim 1, characterized in that, The cooling pipe (10) is a continuous curved pipe, and the cooling pipe (10) has multiple vertically distributed connecting pipe sections.

3. A wind turbine drive train according to claim 2, characterized in that, Multiple cooling cylinders (12) are distributed one-to-one on multiple connecting pipe sections, and multiple air outlet pipes (8) are distributed one-to-one above multiple cooling cylinders (12).

4. A wind turbine drive train according to claim 1, characterized in that, A copper-based brazing filler metal is provided between the cooling cylinder (12) and the connecting pipe.

5. A wind turbine drive train according to claim 4, characterized in that, The main frame (4) has sealing plates (9) fixed to both sides by bolts.

6. A wind turbine generator set, characterized in that, The wind turbine drive train according to any one of claims 1 to 5 further includes: A tower (1) is provided with a nacelle (3) on which a generator is installed; Wind turbine assembly (2), which is mounted on the coupling.

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