Heat dissipation module and heat dissipation system for hydraulic variable pitch system and wind generating set

Abstract

The utility model provides a heat dissipation module used for a hydraulic variable pitch system, a heat dissipation system and a wind generating set, the heat dissipation system can be installed on a hub of the wind generating set, the heat dissipation system comprises the heat dissipation module and at least one medium conveying unit, the heat dissipation module comprises a support assembly and a heat dissipation device assembly, and the support assembly is connected with the heat dissipation device assembly. The support assembly is used for being connected with the hub. The radiator assembly is connected to the support assembly. And the medium conveying unit is connected between the radiator assembly and a hydraulic variable pitch system of the blade, and is used for enabling a medium to circulate between the radiator assembly and the hydraulic variable pitch system, so that the medium is cooled, the variable pitch system is cooled, the temperature of the variable pitch system is prevented from being too high, and the operation reliability of the variable pitch system is improved.

Description

Technical Field

[0001] This disclosure pertains to the field of wind power generation technology, and particularly relates to a heat dissipation module, heat dissipation system, and wind turbine generator set for a hydraulic pitch system. Background Technology

[0002] To improve wind energy utilization, wind turbine generators typically include a pitch system. This system adjusts the blade angle and frontal area in real time according to changes in wind speed, ensuring the blades remain aligned with the wind direction. During operation, heat is generated by the motors or mechanical components in the pitch system. To ensure the normal operation of the pitch system and prevent damage from overheating, wind turbine generators usually require heat dissipation.

[0003] Currently, hydraulic pitch control systems are an important type of pitch control system. They are favored for their advantages such as fast response, high rigidity, high torque, smooth operation, ability to share oil source with yaw and braking systems, and ease of integrated layout. To dissipate heat from the hydraulic pitch control system, the radiator is usually installed on the base of the nacelle and connected to the hub through a fluid ring to achieve oil transfer. However, as the fluid rings have been in operation for a long time, the risk of leakage increases, which significantly reduces the reliability of the wind turbine generator. Utility Model Content

[0004] The main objective of this disclosure is to provide a heat dissipation module, a heat dissipation system, and a wind turbine generator for a hydraulic pitch system, thereby improving the operational reliability of the hydraulic pitch system.

[0005] To achieve the above objectives, this disclosure provides the following technical solution:

[0006] One aspect of this disclosure provides a cooling system for a hydraulic pitch system, the cooling system being mountable on the hub of a wind turbine generator set. The cooling system includes a cooling module and at least one medium delivery unit. The cooling module includes a support assembly and a radiator assembly. The support assembly is connected to the hub; the radiator assembly is connected to the support assembly; at least one medium delivery unit is connected between the radiator assembly and the hydraulic pitch system of the wind turbine generator set, for circulating a medium between the radiator assembly and the hydraulic pitch system to cool the hydraulic pitch system.

[0007] In one exemplary embodiment of this disclosure, the radiator assembly is disposed outside the wheel hub, and the bracket assembly is supported on the outer peripheral wall of the wheel hub.

[0008] Optionally, the bracket assembly includes a bracket body and an elastic bracket, the bracket body being spaced apart from the wheel hub, and the elastic bracket extending from the bracket body toward the wheel hub and supported on the outer peripheral wall of the wheel hub.

[0009] Specifically, the wheel hub is provided with a first ventilation opening, and the heat dissipation system includes a first ventilation cover. The first ventilation cover is placed over the first ventilation opening and divides the space into an inner space and an outer space of the wheel hub. The first ventilation cover is provided with multiple exhaust holes, and the inner space of the wheel hub is connected to the outer space of the wheel hub through the exhaust holes.

[0010] Furthermore, the first vent is formed as the air outlet of the heat dissipation system, and the heat sink assembly is disposed at the first vent.

[0011] In another exemplary embodiment of this disclosure, the heat dissipation system further includes a fixed cylinder, the edge of the first vent is connected to the outer peripheral wall of the fixed cylinder, the inner cavity of the fixed cylinder communicates with the inner cavity of the hub, and the first ventilation shroud is disposed at the outer end of the fixed cylinder.

[0012] Specifically, the inner end of the fixed cylinder is located in the inner cavity of the hub, the bracket assembly is fixed to the inner end of the fixed cylinder, and the radiator assembly extends from the bracket assembly into the inner cavity of the fixed cylinder.

[0013] Optionally, the support assembly includes a support body and an elastic support, the support body being spaced apart from the inner end face of the fixed cylinder, and the elastic support extending from the support body toward the inner end face of the fixed cylinder and supporting the inner end face.

[0014] Specifically, the first ventilation hood includes a first hood body and a first end cap. The first hood body has a cylindrical shell structure, and one end of the first hood body is fixed to the outer end of the fixed cylinder body.

[0015] Furthermore, the first vent is circular, and the rotation center line of the hub passes through the center of the first vent; and / or, the hub is also provided with a plurality of second vents, which are equidistantly spaced around the rotation center line of the hub.

[0016] In another exemplary embodiment of this disclosure, the wheel hub is further provided with a second vent, which forms the air inlet of the heat dissipation system. The heat dissipation system further includes a second ventilation cover, which covers the second vent and has a plurality of air inlets. The space inside the wheel hub is connected to the outside through the air inlets.

[0017] Optionally, the second ventilation hood includes a second hood body and a second end cap. The second hood body has a cylindrical shell structure. One end of the second hood body is fixed to the second ventilation port. The second end cap is rotatably covered on the other end of the second hood body. A plurality of air inlets are provided on the second hood body.

[0018] Specifically, the centerline of the radiator assembly coincides with the rotation centerline of the wheel hub; or, the center of gravity of the heat dissipation module is located on the rotation centerline of the wheel hub.

[0019] Furthermore, the radiator assembly includes a heat dissipation unit fixed to the bracket assembly. Each medium delivery unit includes a pump body, a first delivery pipeline, and a second delivery pipeline. The first delivery pipeline is connected between one interface of the pump body and the hydraulic pitch system of the corresponding blade. The second delivery pipeline is connected between another interface of the pump body and the radiator assembly. The heat dissipation unit is provided with a receiving cavity, which is connected to the pump body through the second delivery pipeline.

[0020] In another exemplary embodiment of this disclosure, the heat dissipation module further includes an adapter plate, the adapter plate being provided with through holes matching the first delivery pipeline and the second delivery pipeline, the pump body and the heat dissipation module being respectively disposed on both sides of the adapter plate, and the pump body being connected to the radiator assembly through the second delivery pipeline.

[0021] Optionally, the medium delivery unit further includes a pressure sensor and a controller. The pressure sensor is used to monitor the pressure information of the medium in the heat dissipation system, and the controller is used to control the pitch angle of the wind turbine blades according to the pressure information.

[0022] Specifically, the radiator assembly further includes an air guide shroud and a cooling fan. The cooling fan is disposed on the side of the heat dissipation unit away from the support assembly, and the air guide shroud is disposed between the cooling fan and the heat dissipation unit.

[0023] In another aspect, this disclosure provides a wind turbine generator set, the wind turbine generator set including a hub, a hydraulic pitch system disposed on the hub, and a cooling system as described above.

[0024] In another aspect, this disclosure provides a heat dissipation module for a hydraulic pitch system, the heat dissipation module including a support assembly and a radiator assembly, the support assembly being used for connection to a hub; the radiator assembly being fixed to the support assembly and configured to dissipate heat from the hydraulic pitch system of a wind turbine generator set.

[0025] The heat dissipation module, heat dissipation system, and wind turbine generator provided in this disclosure have at least the following beneficial effects: This disclosure uses a medium transport unit to circulate between the radiator assembly and the hydraulic pitch system, enabling the transfer of heat from the hydraulic pitch system to the heat dissipation system, where the heat is dissipated through the radiator assembly, thus preventing the hydraulic pitch system from overheating. Furthermore, compared to existing embodiments where the radiator is mounted on the nacelle base and connected to the hub via a fluidic slip ring, the heat dissipation system for the hydraulic pitch system provided in this disclosure connects the radiator assembly to the hub via a bracket assembly and can rotate with the hub, eliminating the need for an additional fluidic slip ring. This overcomes the risk of leakage caused by long-term use of the fluidic slip ring and improves the service life of the wind turbine generator. Attached Figure Description

[0026] The above and / or other objects and advantages of this disclosure will become clearer from the following description of embodiments taken in conjunction with the accompanying drawings, in which:

[0027] Figure 1 A structural diagram of a heat dissipation system assembled in a wheel hub state, provided as a first exemplary embodiment of this disclosure.

[0028] Figure 2 for Figure 1 A first-view structural diagram of the cooling system used in the hydraulic pitch system.

[0029] Figure 3 for Figure 2 The second-view structural diagram of the heat dissipation system.

[0030] Figure 4 for Figure 2 Left view of the heat dissipation system.

[0031] Figure 5 for Figure 2 The structural diagram of the heat sink assembly.

[0032] Figure 6 for Figure 2 Structural diagram of the central support body.

[0033] Figure 7 A structural diagram of a heat dissipation system assembled in a wheel hub state, provided as a second exemplary embodiment of this disclosure.

[0034] Figure 8 for Figure 7 Another perspective on the structure of the heat dissipation system.

[0035] Figure 9 for Figure 7 A first-person view of the structure of the air intake cap.

[0036] Figure 10 for Figure 9 The second-view structural diagram of the air intake cap.

[0037] Figure 11 for Figure 7 A sectional view of the cooling system along the rotation center line of the wheel hub.

[0038] Figure 12 for Figure 11 The diagram shows the structure of the heat dissipation system.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Heat sink assembly; 2. Bracket body;

[0041] 3. Connecting plate; 4. Flexible support;

[0042] 5. First conveying pipeline; 6. Second conveying pipeline;

[0043] 7. Adapter board; 8. Pressure sensor;

[0044] 10. Pump body; 11. Hub;

[0045] 12. Cooling fan; 13. Air guide shroud;

[0046] 14. Heat dissipation unit; 16. Large end;

[0047] 17. First ventilation hood; 18. Exhaust vent;

[0048] 171. First cover; 172. First end cap;

[0049] 19. Second ventilation hood; 111. Fixed cylinder;

[0050] 191. Second cover; 192. Second end cap;

[0051] 193. Pivot shaft; 194. Air inlet;

[0052] 195. Lock body; 196. Lock body handle;

[0053] 197. Cover handle; 198. End flange;

[0054] 199. Flange hole; 100. Heat dissipation system. Detailed Implementation

[0055] Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be construed that the embodiments of this disclosure are limited to those described herein. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted.

[0056] Reference Figure 1 This disclosure provides a heat dissipation system 100 for a hydraulic pitch system, which can be installed on the hub 11 of a wind turbine generator set to dissipate heat from the hydraulic pitch system of the wind turbine generator set.

[0057] Specifically, a wind turbine generator set may include a tower (not shown), a nacelle located on top of the tower, and a hub 11 that rotates with the nacelle (not shown). The hub 11 is provided with at least two blades (not shown), which are rotatably connected to the hub 11 via pitch bearings, so as to adjust the pitch angle and windward area of ​​the blades in real time according to the wind speed, thereby improving wind energy utilization or reducing load and shutting down.

[0058] To drive reliable blade pitch control, the wind turbine also includes a pitch system, such as, but not limited to, a hydraulic pitch system. During operation, friction between mechanical components or the rotation of the motor can cause the pitch system temperature to rise. The cooling system provided in this disclosure is used to dissipate heat from the pitch system to prevent it from overheating, thereby improving the operational reliability of the pitch system.

[0059] Reference Figures 1 to 4 As an example, the heat dissipation system 100 includes a heat dissipation module and at least one medium delivery unit. The heat dissipation module includes a support assembly and a radiator assembly 1. The support assembly is used to connect to the hub 11 and is disposed outside the hub 11, for example, but not limited to, the support assembly is supported on the outer peripheral wall of the hub 11. The radiator assembly 1 is then connected to the support assembly, so that the radiator assembly 1 is connected to the outside of the hub 11 through the support assembly to facilitate heat dissipation and improve heat dissipation efficiency.

[0060] The medium delivery unit is located between the radiator assembly 1 and the hydraulic pitch system of the blades, and is used to circulate the medium between the radiator assembly 1 and the hydraulic pitch system to cool the medium.

[0061] This disclosure uses a medium transport unit to circulate between the radiator assembly 1 and the hydraulic pitch system, which can transfer heat from the hydraulic pitch system to the heat dissipation system and dissipate the heat through the radiator assembly 1, thereby preventing the hydraulic pitch system from overheating.

[0062] Compared with the prior art where the radiator is installed on the nacelle base and connected to the hub through a liquid slip ring, in the heat dissipation system provided in this disclosure, the radiator assembly 1 is connected to the hub 11 through a bracket assembly and can rotate with the hub 11. There is no need to set up an additional liquid slip ring, which overcomes the risk of leakage caused by long-term use of the liquid slip ring and improves the service life of the wind turbine generator set.

[0063] The media conveying unit provided in this disclosure can be used to convey liquids, such as, but not limited to, oil, or gases, such as, but not limited to, hot gas, wherein the type of medium can be selected as needed.

[0064] Reference Figures 2 to 4 In this embodiment, each blade of the wind turbine corresponds to a set of media delivery units, which can individually dissipate heat from the hydraulic pitch system of each blade and perform flexible control.

[0065] However, it should be understood that the medium delivery unit can also be set to one, two or more, and the specific number is not limited. The actual number is set according to the heat dissipation requirements of the hydraulic circuit of the hydraulic pitch system in the hub.

[0066] In order to achieve the circulation of the medium, this embodiment provides a pump body 10 as a power source for the medium to flow between the radiator assembly 1 and the hydraulic pitch system. It can drive the medium from the hydraulic pitch system into the radiator assembly 1 for cooling, and then return to the hydraulic pitch system.

[0067] Specifically, each medium delivery unit includes a pump body 10, a first delivery pipeline 5, and a second delivery pipeline 6. The first delivery pipeline 5 is connected between one interface of the pump body 10 and the hydraulic pitch system of the corresponding blade, and the second delivery pipeline 6 is connected between another interface of the pump body 10 and the radiator assembly 1.

[0068] In this embodiment, the hydraulic pitch system is connected to the cooling system 100, allowing the hydraulic fluid in the hydraulic pitch system to directly enter the cooling system 100. The fluid then dissipates heat as it flows through the radiator assembly 1. Thus, the radiator assembly 1 directly cools the fluid in the hydraulic pitch system, improving the cooling efficiency of the cooling system 100.

[0069] As an example, one interface of the pump body 10 can be an oil inlet, and the other interface can be an oil outlet. One oil outlet of the hydraulic pitch system can be connected to the oil inlet of the pump body 10 through the first delivery pipeline 5. The oil outlet of the pump body 10 can be connected to the oil inlet of the radiator assembly 1. The oil outlet of the radiator assembly 1 is connected to one oil inlet of the hydraulic pitch system. In this way, during the operation of the pump body 10, the oil with a first temperature in the hydraulic pitch system can flow to the pump body 10 through the first delivery pipeline 5 and enter the radiator assembly 1 for cooling. Then, the oil with a second temperature leaves the radiator assembly 1 and returns to the hydraulic pitch system through the second delivery pipeline 6, wherein the second temperature is lower than the first temperature.

[0070] Reference Figures 1 to 5As an example, the pump body 10 is disposed within the inner cavity of the hub 11. The radiator assembly 1 includes a heat dissipation unit 14, which is fixed to the bracket assembly and communicates with the pump body 10 via a second delivery pipe 6. The heat dissipation unit 14 is provided with a receiving cavity for containing the medium. The receiving cavity of the heat dissipation unit 14 can communicate with both the pump body 10 and the hydraulic pitch system. Driven by the pump body 10, the oil of the hydraulic pitch system can enter the receiving cavity of the heat dissipation unit 14 and return to the hydraulic pitch system.

[0071] Reference Figure 5 In order to accelerate the heat dissipation of the medium in the heat dissipation unit 14, in another exemplary embodiment of the present disclosure, the heat sink assembly 1 further includes a heat dissipation fan 12. The heat dissipation fan 12 is disposed on the side of the heat dissipation unit 14 away from the support assembly. The air outlet of the heat dissipation fan 12 faces the heat dissipation unit 14. The outside air acts quickly on the heat dissipation unit 14 under the drive of the heat dissipation fan 12 and carries away the heat of the heat dissipation unit 14, thereby accelerating the heat dissipation of the heat dissipation unit 14 and improving the heat dissipation efficiency of the heat dissipation system 100.

[0072] Continue to refer to Figure 5 The radiator assembly 1 also includes an air guide shroud 13, which is disposed between the cooling fan 12 and the heat dissipation unit 14. The air outlet of the cooling fan 12 is connected to the air inlet of the air guide shroud 13, and the air outlet of the air guide shroud 13 faces the heat dissipation unit 14. With this arrangement, the air provided by the cooling fan 12 is guided by the air guide shroud 13 to act evenly on the heat dissipation unit 14.

[0073] Continue to refer to Figure 5 In this embodiment, the heat dissipation unit 14 includes three heat dissipation fins arranged in parallel. The three heat dissipation fins are arranged adjacent to each other along a first direction, and the rotation center line of the heat dissipation fan 12 is perpendicular to the three heat dissipation fins. Figure 5 The direction indicated by the middle arrow is the first direction.

[0074] In this embodiment, the wind turbine generator set includes a hub 11 and three blades evenly arranged on the hub 11. Each blade is provided with a corresponding heat sink. Therefore, the heat dissipation unit 14 in this embodiment includes three heat sinks, but is not limited thereto. The wind turbine generator set may also include two or other numbers of blades, and the number of heat sinks and the number of blades may be the same.

[0075] return Figures 1 to 4 as well as Figure 6, the support assembly includes a support body 2 which is disposed on one side of the heat dissipation unit 14 facing the wheel hub 11, and there are two support bodies 2 which are respectively disposed at both ends of the heat dissipation unit 14 in the second direction. Here, the second direction is perpendicular to both the first direction and the extending direction of the rotation center line of the heat dissipation fan 12. In an alternative embodiment, the support body 2 can be in the form of a beam structure. For example but not limited to, the cross-section of this beam structure can be in the shape of an "I", or a "U", or a "square", and can be selected according to actual needs. Figure 6 An embodiment in which the cross-section of the support body 2 is in the shape of a "U" is shown, but not limited thereto.

[0076] In this example, the number of support bodies is two, which can be reliably connected to the wheel hub while reducing weight. However, it should be understood that the number of support bodies is not limited.

[0077] Optionally, the support body 2 and the wheel hub 11 are spaced apart. For example but not limited to, the support body 2 is spaced outside the wheel hub 11, and an elastic support 4 is also disposed between the wheel hub 11 and the support body 2. Specifically, during the operation of the heat dissipation system for the hydraulic pitch system, due to the operation of the heat dissipation fan 12, vibrations may occur. To absorb these vibrations, the support assembly further includes an elastic support 4 which is disposed on the side of the support body 2背离 the radiator assembly 1, and the elastic support 4 can support on the outer peripheral wall of the wheel hub 11.

[0078] In this embodiment, the elastic support 4 can be a rubber part for absorbing vibrations. Specifically, according to needs, the elastic support 4 can be a rubber cylinder, and the elastic support 4 is connected to the outer wall surface of the wheel hub 11 through fasteners or adhesives so as to be able to support between the support body 2 and the wheel hub 11, avoiding the vibration during the operation of the heat dissipation system 100 from being transmitted to the wheel hub 11, thereby improving the reliability and service life of the operation of the wheel hub 11.

[0079] In this embodiment, the support assembly includes multiple elastic supports 4 to increase the contact area between the heat dissipation system 100 for the hydraulic pitch system and the wheel hub 11. This embodiment is described by taking the support assembly including 4 elastic supports 4 as an example, but not limited thereto. In an alternative embodiment, the elastic supports 4 are fixed at both ends of the support body 2 in the extending direction.

[0080] It should be noted that there seems to be a typo in the original text where "支架本体2背离散热器组件1的一侧" has an incorrect "背离", which might be a misspelling. I translated it as best as possible based on the context.To improve the connection reliability between the bracket body 2 and the elastic bracket 4, in another exemplary embodiment of this disclosure, the bracket assembly further includes a connecting plate 3, which is connected between the bracket body 2 and the elastic bracket 4. Specifically, the large end 16 of the bracket body 2, which has a "U"-shaped structure, is disposed facing the hub 11, and the connecting plate 3 is fixed to the large end 16, that is, the large end 16 of the bracket body 2 is connected to the side of the connecting plate 3 away from the hub 11, and the elastic bracket 4 is connected to the side of the connecting plate 3 facing the hub 11, that is, the elastic bracket 4 and the large end 16 of the bracket body 2 are respectively disposed on opposite sides of the connecting plate 3.

[0081] This disclosure uses welding or fastener connection to fix the connecting plate 3 to the large end 16, and then connects the elastic bracket 4 to the connecting plate 3, thereby increasing the attachment area of ​​the elastic bracket 4 and improving the connection reliability between the elastic bracket 4 and the bracket body 2.

[0082] In this embodiment, the bracket assembly is directly connected to the outer peripheral wall of the hub 11 via the elastic bracket 4. Alternatively, if the bracket assembly does not include the elastic bracket 4, the bracket assembly can be directly connected to the outer peripheral wall of the hub 11 via the bracket body 2, but this is not a limitation.

[0083] Continue to refer to Figures 1 to 4 To facilitate the installation of the heat dissipation system, mounting holes are provided on the hub 11. The heat dissipation system also includes a sealing plate that matches the mounting holes and can be sealed at the mounting holes. During the operation of the wind turbine generator set, this prevents external debris from entering the hub 11 through the mounting holes, thus improving the safety of the wind turbine generator set. In this embodiment, the space is divided into an inner hub space and an outer hub space by the sealing plate. The space located inside the hub cavity and inside the sealing plate can be considered as the inner hub space, but is not limited to this.

[0084] The heat dissipation module also includes an adapter plate 7, which has through holes that match the first delivery pipe 5 and the second delivery pipe 6. The second delivery pipe 6 passes through the through holes. The pump body 10 and the heat dissipation module are respectively disposed on both sides of the adapter plate 7, and the pump body 10 is connected to the radiator assembly 1 through the second delivery pipe 6. In this embodiment, in order to reduce the number of components in the heat dissipation system, the adapter plate 7 is used as a sealing plate, but it is not limited to this.

[0085] Specifically, the adapter plate 7 matches the mounting hole of the hub 11, the adapter plate 7 is sealed and connected to the mounting hole, and the adapter plate 7 is provided with through holes that match the first conveying pipe 5 and the second conveying pipe 6. The first conveying pipe 5 and the second conveying pipe 6 are respectively inserted into the corresponding through holes.

[0086] In this embodiment, the pump body 10 is disposed inside the adapter plate 7, that is, the pump body 10 is disposed in the inner cavity of the hub 11. The first delivery pipe 5 and the second delivery pipe 6 extend from the inner cavity of the hub 11 through the through hole to the outside of the hub 11. The first delivery pipe 5 and the second delivery pipe 6 are respectively sealed with the adapter plate 7 to prevent external debris from accidentally entering the hub 11 and improve the safety of the heat dissipation system.

[0087] In this embodiment, the mounting hole of the wheel hub 11 can be located at the front end (windward side) or the rear end (leeward side) of the wheel hub 11. Figure 1 In this embodiment, the adapter plate 7 is disposed at the front end of the hub 11. During the operation of the wind turbine generator set, the front end of the hub 11 can be the windward side of the rotor. Figure 1 The direction of the arrow indicates the wind direction. The front end of the hub 11 is provided with a mounting hole, the adapter plate 7 is provided at the mounting hole, and the radiator assembly 1 is provided on the outside of the adapter plate 7. This arrangement improves the heat dissipation efficiency of the radiator assembly 1.

[0088] In this embodiment, by activating the cooling fan 12 of the cooling module, a pressure difference can be generated between the air pressure on both sides of the cooling unit 14, thereby causing the air to flow directionally to the cooling unit 14. Since the mounting hole is provided with an adapter plate 7, the air inside the hub 11 does not participate in the cooling of the cooling module.

[0089] In an optional embodiment, the adapter plate 7 can also be disposed at the rear end of the hub 11. During the operation of the wind turbine generator set, the outside wind first bypasses the hub 11, then passes through the heat dissipation unit 14 to carry away the heat of the heat dissipation unit 14, and after being guided by the air guide shroud 13, finally flows to the cooling fan 12. This airflow direction can be consistent with... Figure 1 The direction is opposite, but not shown in the figure. In an alternative embodiment, the rotation center line of the hub 11 passes through the center of the mounting hole. Figure 1 The dotted line in the figure shows the rotation center line of the hub 11.

[0090] In this embodiment, the rotation center line of the hub 11 passes through the center of gravity of the heat dissipation module, which can resist the weight fatigue effect on the heat dissipation module during the rotation of the hub 11 and the deformation of the hub 11 when subjected to wind load, thereby further improving the reliability of the heat dissipation system 100.

[0091] In an optional embodiment, the mounting hole of the hub 11 can be a circular hole, and the adapter plate 7 is set as a circular plate that matches the mounting hole. The centerline of the radiator assembly 1 passes through the center of the circular adapter plate 7, and the centerline of the radiator assembly 1 coincides with the rotation centerline of the hub 11. With this configuration, during the operation of the wind turbine generator set, the centrifugal effect caused by the eccentricity of the radiator assembly 1 is avoided, and the weight fatigue effect on the radiator assembly 1 during the rotation of the hub 11 and the deformation of the hub 11 under wind load can be resisted, thereby further improving the reliability of the heat dissipation system 100. In this embodiment, the centerline of the radiator assembly 1 coincides with the rotation centerline of the cooling fan 12, but this is not a limitation.

[0092] To further improve the reliability of the heat dissipation system, in this embodiment, the adapter plate 7 is sealed at the mounting hole of the hub 11, but this is not a limitation.

[0093] This disclosure limits the first and second delivery pipes 5 and 6 by setting an adapter plate 7, preventing them from swinging freely and thus improving the reliability of the heat dissipation system. Furthermore, the connection between the adapter plate 7 and the first and second delivery pipes 5 and 6 is sealed to prevent external rainwater, dust, or other impurities from entering the hub 11.

[0094] In this embodiment, the radiator assembly 1, bracket assembly, pump body 10, and adapter plate 7 can be pre-assembled in the workshop and sealed to form a pre-assembled module. After the hub 11 of the wind turbine is assembled, the pre-assembled module can be connected to the hub 11, thereby reducing the on-site assembly time of the wind turbine and improving the assembly efficiency of the wind turbine.

[0095] Specifically, the adapter plate 7 is provided with multiple pipe joints, which are sealed to the adapter plate 7. The pipes located on both sides of the adapter plate 7 are connected to the pipe joints respectively, so that the pipes located on both sides of the adapter plate 7 and the corresponding pipe joints form the first conveying pipe 5 or the second conveying pipe 6, but not limited thereto.

[0096] The heat dissipation system 100 for the hydraulic pitch system disclosed herein is fixed to the hub 11 by a radiator assembly 1. The first delivery pipe 5 and the second delivery pipe 6 are connected to the hub 11. During the operation of the wind turbine generator set, the radiator assembly 1 can rotate together with the hub 11. Compared with the prior art, there is no need to use a liquid slip ring, which avoids leakage caused by long-term operation of the liquid slip ring, improves the reliability of the hydraulic pitch system, and reduces the operation and maintenance cost of the wind turbine generator set.

[0097] To further improve the reliability of the heat dissipation system 100, the medium delivery unit also includes a pressure sensor 8 and a controller (not shown). The pressure sensor is used to monitor the pressure information of the medium in the heat dissipation system, and the controller is used to control the pitch angle of the blades according to the pressure information.

[0098] Pressure sensor 8 is used to monitor the pressure information of the cooling system in real time. For example, but not limited to, pressure sensor 8 can be used to monitor the pressure information of the oil in the first delivery pipeline 5 and / or the second delivery pipeline 6. When the pressure information exceeds a predetermined threshold, the controller controls the hydraulic pitch system to retract the pitch in an emergency to avoid danger, thereby improving the reliability of the wind turbine generator operation.

[0099] In this embodiment, the pressure sensor 8 is disposed on the pipe joint of the adapter plate 7, but this is not a limitation.

[0100] As an example, in this embodiment, the oil tank connected to the pump body 10 of the cooling system for the hydraulic pitch system can be a positive pressure oil tank, but it is not limited thereto.

[0101] The above embodiments are illustrated by taking the example of the heat dissipation module being located in the outer space of the wheel hub, but this is not a limitation and the heat dissipation module can also be located in the inner space of the wheel hub.

[0102] Reference Figures 7 to 12 The second exemplary embodiment of this disclosure illustrates a structural diagram of a heat dissipation system. In this embodiment, the specific structure of the heat dissipation module is largely the same as that of the heat dissipation module in the first embodiment, and will not be described again here.

[0103] Unlike the first embodiment, in this embodiment the heat dissipation module is located inside the wheel hub.

[0104] Reference Figure 7 and Figure 8 In order to ensure the smooth operation of the heat dissipation system, the wheel hub 11 is provided with a first vent and a second vent. The first vent can be used as the air outlet of the heat dissipation system, and the second vent can be used as the air inlet of the heat dissipation system. Outside air can enter the inner space of the wheel hub through the air inlet and leave the inner space of the wheel hub through the air outlet before entering the outer space of the wheel hub, thereby improving the air flow and facilitating the heat dissipation of the inner space of the wheel hub, which in turn facilitates the heat dissipation of the heat dissipation module.

[0105] As an example, this embodiment uses a hub 11 with one first vent and three second vents for illustration, but it is not limited to this, and the number of second vents can be set as needed.

[0106] like Figure 8As shown, the first vent is positioned close to the rotation center line of the hub 11. For example, but not limited to, the first vent is circular, and the rotation center line of the hub 11 passes through the center of the first vent. As an example, the heat dissipation module can be located at the first vent and inside the hub 11, i.e., within the space inside the hub. By placing the heat dissipation module inside the hub 11, operators do not need to work at heights outside the hub during the installation and maintenance of the heat dissipation module, thereby improving operator safety.

[0107] Furthermore, the heat dissipation system also includes a first ventilation shroud 17, which covers the first ventilation opening and divides the space into an inner space and an outer space of the wheel hub. The first ventilation shroud 17 is provided with a plurality of exhaust holes 18, and the inner space of the wheel hub is connected to the outer space of the wheel hub through the exhaust holes 18.

[0108] In this embodiment, by providing a first ventilation cover 17 at the first ventilation opening, external debris can be prevented from entering the wheel hub's internal space through the first ventilation opening, thereby improving the reliability of the wheel hub's operation, but this is not a limitation. In addition, by providing multiple exhaust holes 18 on the first ventilation cover 17, air circulation can be achieved between the internal and external spaces of the wheel hub, which is beneficial for the heat dissipation system to dissipate heat, but this is not a limitation.

[0109] Continue to refer to Figure 7 , Figure 8 as well as Figure 11 Specifically, in order to provide an independent space for the heat dissipation module, a fixed cylinder 111 is provided at the first vent of the hub 11. The inner cavity of the fixed cylinder 111 can communicate with the inner cavity of the hub 11 to form part of the inner space of the hub.

[0110] As an example, the outer peripheral wall of the fixed cylinder 111 is sealed to the edge of the first vent to prevent outside air from entering the hub space through the edge of the first vent. Alternatively, the fixed cylinder 111 is installed at the first vent using welding or fastener connection.

[0111] As an example, the fixed cylinder 111 extends approximately along the rotation center line of the hub 11. The end closer to the center of the hub 11 can be defined as the inner end of the fixed cylinder 111, and the end farther from the center of the hub 11 can be defined as the outer end of the fixed cylinder 111. This embodiment is illustrated by taking the fixed cylinder 111 as a cylinder, with its central axis coinciding with the rotation center line of the hub 11, but this is not a limitation.

[0112] Reference Figure 11In this embodiment, the middle part of the fixed cylinder 111 along the central axis is sealed to the edge of the first vent. Its inner end extends into the hub 11, and its outer end protrudes outward from the outer peripheral wall of the hub 11. The first ventilation hood 17 is disposed at the outer end of the fixed cylinder 111, so that the air in the inner cavity of the fixed cylinder 111 can flow out to the outer space of the hub through the exhaust hole 18 on the first ventilation hood 17, thereby facilitating heat dissipation in the inner space of the hub and thus facilitating heat dissipation of the hydraulic pitch system.

[0113] In this embodiment, the space is divided into the inner space of the wheel hub and the outer space of the wheel hub by setting the first ventilation hood 17. Since the fixed cylinder 111 is set on the inner side of the first ventilation hood 17, that is, the side facing the wheel hub 11, and the inner cavity of the fixed cylinder 111 is connected to the inner cavity of the wheel hub 11, the inner cavity of the fixed cylinder 111 is part of the inner space of the wheel hub, but is not limited thereto.

[0114] This embodiment is illustrated by taking the inner end of the fixed cylinder 111 extending into the inner cavity of the hub 11 as an example, but it is not limited thereto. As needed, the inner end of the fixed cylinder 111 can also be configured to connect with the edge of the first vent.

[0115] In this embodiment, the fixed cylinder 111 and the hub 11 can be formed independently and then connected together by welding or fasteners, or the fixed cylinder 111 and the hub 11 can be formed as a single unit, both of which are within the protection scope of this disclosure.

[0116] Continue to refer to Figure 11 In this embodiment, the bracket assembly is fixed to the inner end of the fixed cylinder 111, and the radiator assembly 1 extends from the bracket assembly into the inner cavity of the fixed cylinder 111.

[0117] Specifically, the support assembly includes a support body 2 and an elastic support 4. The support body 2 is connected to the inner end of the fixed cylinder 111. For example, but not limited to, the support body 2 is spaced apart from the inner end face of the fixed cylinder 111. The elastic support 4 extends from the support body 2 to the inner end face of the fixed cylinder 111 and is supported on the inner end face of the fixed cylinder 111, thereby indirectly connecting the support body 2 to the inner end face of the fixed cylinder 111, but not limited thereto.

[0118] In this embodiment, by setting an elastic bracket 4 between the bracket body 2 and the fixed cylinder 111, the vibration of the hub 11 during operation can be absorbed, thereby improving the service life of the heat dissipation system. However, this is not the limitation. As needed, the bracket body 2 can be directly connected to the inner end face of the fixed cylinder 111.

[0119] As an example, the radiator assembly 1 is disposed on the side of the bracket assembly facing the fixed cylinder 111, and at least a portion of the radiator assembly 1 is disposed within the inner cavity of the fixed cylinder 111. That is, in this embodiment, the fixed cylinder 111 provides a space for accommodating the radiator assembly 1. The heat dissipation unit 14 is disposed within the inner cavity of the fixed cylinder 111, and the air guide shroud 13 and the heat dissipation fan 12 are disposed on the side of the heat dissipation unit 14 away from the bracket body 2, but this is not a limitation.

[0120] This disclosure expands the space inside the wheel hub by protruding outward from the outer end of the fixed cylinder 111 from the outer peripheral wall of the wheel hub 11. In other words, by setting the fixed cylinder 111 on the wheel hub 11, the space inside the wheel hub is expanded.

[0121] Continue to refer to Figure 11 and Figure 12 In order to increase the contact area between the elastic bracket 4 and the bracket body 2, the bracket assembly also includes a connecting plate 3. In this embodiment, the connecting plate 3 is disposed on the side of the bracket body 2 away from the heat sink assembly 1, and the elastic bracket 4 and the bracket body 2 are disposed on the side of the connecting plate 3 facing the heat sink assembly 1, but this is not a limitation.

[0122] Unlike the first embodiment, in this embodiment, the large end 16 of the bracket body 2 and the elastic bracket 4 are connected to the same side of the connecting plate 3, that is, they are both connected to the side of the connecting plate 3 facing the heat dissipation unit 14.

[0123] Continue to refer to Figure 11 The first ventilation hood 17 is disposed over the outer end of the fixed cylinder 111, for example, but not limited to, the first ventilation hood 17 is connected to the end face of the fixed cylinder 111. As an example, the first ventilation hood 17 includes a first cover body 171 with a cylindrical shell structure and a first end cap 172 disposed at the end of the first cover body 171, and one end of the first cover body 171 is disposed at the outer end of the fixed cylinder 111, for example, but not limited to, one end is fixed to the outer end face of the fixed cylinder 111, and the other end is sealed by the first end cap 172, which can effectively prevent external debris from entering the inner cavity of the hub 11 through the fixed cylinder 111.

[0124] As an example, one end of the first cover 171 is provided with an end flange, through which the first cover 171 is connected to the outer end face of the fixed cylinder 111, but this is not a limitation. In an alternative embodiment, the end flange of the first cover 171 is provided with a flange hole, through which fasteners are inserted and connected to the fixed cylinder 111.

[0125] As an example, the exhaust vent 18 is provided on the first cover 171, but it is not limited thereto. If necessary, the exhaust vent 18 can also be provided on the first end cover 172, but it is not limited thereto.

[0126] In this embodiment, the first cover 171 and the first end cap 172 can be fixedly connected, but this is not a limitation. In an optional embodiment, the first end cap 172 can be detachably connected to the other end of the first cover 171. For example, but not limited to, the first end cap 172 is connected to one side of the first cover 171 via a pivot (not shown). When it is necessary to repair or replace parts of the heat dissipation system, the first end cap 172 can be driven to rotate around the pivot to open the first end cap 172.

[0127] In this embodiment, three second ventilation openings are arranged at equal angular intervals around the rotation center line of the hub 11, but this is not a limitation. Since the three second ventilation openings are evenly arranged, air can enter evenly from the three second ventilation openings after the cooling fan 12 is started, thereby improving the heat dissipation efficiency of the hub 11.

[0128] To prevent external impurities from entering the hub 11, each second ventilation port is provided with a second ventilation cover 19. The second ventilation cover 19 is provided with multiple air inlets 194. The inner cavity of the hub 11 is connected to the outside through the air inlets 194. That is, the space inside the hub can be connected to the space outside the hub through the air inlets 194, which is conducive to the heat dissipation of the cooling system and thus facilitates the heat dissipation of the hydraulic pitch system.

[0129] return Figures 7 to 10 The second ventilation hood 19 includes a second hood body 191 and a second end cap 192. The second hood body 191 is generally configured as a cylindrical shell structure. One end of the second hood body 191 is connected to the second ventilation port, and the second end cap 192 covers the other end of the second hood body 191. As an example, the second hood body 191 can be cylindrical, and the air inlet 194 can be provided on the second hood body 191, but it is not limited thereto. As needed, the air inlet 194 can also be provided on the second end cap 192.

[0130] As an example, one end of the second cover 191 is provided with an end flange 198, and the end flange 198 is provided with a plurality of flange holes 199, through which fasteners can be inserted and connected to the fixed cylinder 111, but not limited thereto.

[0131] As an example, the second end cap 192 can be rotatably connected to one side of the second cover 191 via a pivot 193, allowing the second end cap 192 to be rotatably connected to the second cover 191 around the pivot 193, thereby enabling the second vent to be opened or closed. Under normal circumstances, the second end cap 192 can be in the closed state to prevent foreign objects from accidentally entering the wheel hub's internal space, thus improving the safety of the wheel hub 11. When maintenance of the internal components of the wheel hub 11 is required, the operator can open the second end cap 192 and enter the wheel hub 11 through the second vent, but this is not a limitation.

[0132] Furthermore, the second end cover 192 is provided with a lock body 195 and a lock body handle 196. By operating the lock body handle 196, the lock body 195 can swing between a locked position and an unlocked position. When the lock body 195 is in the locked position, the second end cover 192 is locked onto the second cover 191. At this time, the second end cover 192 cannot rotate around the pivot axis 193, that is, the second vent is covered by the second end cover 192, and external debris cannot enter the hub 11 through the second vent. When the lock body 195 is in the unlocked position, for example, when multiple lock bodies 195 are in the unlocked position at the same time, the second end cover 192 can rotate relative to the second cover 191 around the pivot axis 193, thereby opening the second vent. Operators or other fan components can enter the hub 11 through the second vent. By providing a lock body 195 on the second end cover 192, this disclosure can effectively prevent the second end cover 192 from being accidentally opened, thereby improving the reliability of the heat dissipation system.

[0133] As an example, the lock body handle 196 can be fixed to the lock body 195 and drive the lock body 195 to rotate between the locked and unlocked positions, but this is not a limitation. This embodiment uses the example of three lock bodies 195 provided on the second end cover 192 for illustration, but this is not a limitation, and the number of lock bodies 195 can be set according to actual needs. The lock bodies 195 can be purchased commercially, and will not be described in detail here.

[0134] Referring again to the accompanying drawings, a cover handle 197 is connected to the second end cover 192. For example, but not limited to, the cover handle 197 can be located in the middle of the second end cover 192. When the cover handle 197 is gripped, the second end cover 192 can be driven to rotate around the pivot axis 193, thereby opening the second end cover 192 to open the second vent, or closing the second end cover 192 to close the second vent, thus improving the ease of use of the second end cover 192.

[0135] In this embodiment, a first vent and a second vent are provided on the hub 11, and the inner cavity of the hub 11 is connected to the outside through the first and second vents. When the cooling fan 12 of the heat dissipation module is started, outside air enters the inner space of the hub through the air inlet 194 and flows towards the first vent. The air flows through the heat dissipation unit 14 of the heat dissipation module to carry away heat and leaves the hub 11 through the exhaust vent 18, thereby completing the heat dissipation of the heat dissipation module. Unlike the first embodiment, in this embodiment, the inner cavity of the hub 11 participates in the heat dissipation of the heat dissipation module as part of the heat dissipation channel.

[0136] In another aspect, this disclosure provides a wind turbine generator set, which includes a hub 11, a hydraulic pitch system disposed on the hub 11, and the aforementioned cooling system 100.

[0137] In the description of this disclosure, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to 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 disclosure.

[0138] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0139] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0140] The features, structures, or characteristics described in this disclosure can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the foregoing description to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

Claims

1. A heat dissipation system for a hydraulic pitch system, characterized in that, The cooling system can be installed on the hub (11) of the wind turbine generator set, and the cooling system includes: The heat dissipation module includes a bracket assembly and a radiator assembly (1), wherein the bracket assembly is used to connect to the wheel hub (11); and the radiator assembly (1) is connected to the bracket assembly. At least one medium delivery unit is connected between the radiator assembly (1) and the hydraulic pitch system of the wind turbine generator set to circulate the medium between the radiator assembly and the hydraulic pitch system, thereby cooling the hydraulic pitch system.

2. The heat dissipation system according to claim 1, characterized in that, The radiator assembly (1) is disposed outside the hub (11), and the bracket assembly is supported on the outer peripheral wall of the hub (11).

3. The heat dissipation system according to claim 2, characterized in that, The bracket assembly includes a bracket body (2) and an elastic bracket (4). The bracket body (2) is spaced apart from the wheel hub (11). The elastic bracket (4) extends from the bracket body (2) toward the wheel hub (11) and is supported on the outer peripheral wall of the wheel hub (11).

4. The heat dissipation system according to claim 1, characterized in that, The hub (11) is provided with a first ventilation opening, and the heat dissipation system includes a first ventilation cover (17). The first ventilation cover (17) covers the first ventilation opening and divides the space into an inner space of the hub and an outer space of the hub. The first ventilation cover (17) is provided with a plurality of exhaust holes (18). The inner space of the hub is connected to the outer space of the hub through the exhaust holes (18).

5. The heat dissipation system according to claim 4, characterized in that, The first vent is formed as the air outlet of the heat dissipation system, and the radiator assembly (1) is disposed at the first vent.

6. The heat dissipation system according to claim 5, characterized in that, The heat dissipation system also includes a fixed cylinder (111), the edge of the first vent is connected to the outer peripheral wall of the fixed cylinder (111), the inner cavity of the fixed cylinder (111) is connected to the inner cavity of the hub (11), and the first ventilation cover (17) is disposed at the outer end of the fixed cylinder (111).

7. The heat dissipation system according to claim 6, characterized in that, The inner end of the fixed cylinder (111) is located in the inner cavity of the hub (11), the bracket assembly is fixed to the inner end of the fixed cylinder (111), and the radiator assembly (1) extends from the bracket assembly into the inner cavity of the fixed cylinder (111).

8. The heat dissipation system according to claim 7, characterized in that, The support assembly includes a support body (2) and an elastic support (4). The support body (2) is spaced apart from the inner end face of the fixed cylinder (111). The elastic support (4) extends from the support body (2) toward the inner end face of the fixed cylinder (111) and is supported on the inner end face.

9. The heat dissipation system according to claim 6, characterized in that, The first ventilation hood (17) includes a first hood body (171) and a first end cap (172). The first hood body (171) has a cylindrical shell structure, and one end of the first hood body (171) is fixed to the outer end of the fixed cylinder (111).

10. The heat dissipation system according to claim 4, characterized in that, The first vent is circular, and the rotation center line of the hub (11) passes through the center of the first vent; and / or, the hub (11) is also provided with a plurality of second vents, which are equidistant from each other around the rotation center line of the hub (11).

11. The heat dissipation system according to claim 4, characterized in that, The hub (11) is also provided with a second ventilation opening, which forms the air inlet of the heat dissipation system. The heat dissipation system also includes a second ventilation cover (19), which covers the second ventilation opening. The second ventilation cover (19) is provided with a plurality of air inlets (194), and the space inside the hub is connected to the outside through the air inlets (194).

12. The heat dissipation system according to claim 11, characterized in that, The second ventilation hood (19) includes a second hood body (191) and a second end cap (192). The second hood body (191) has a cylindrical shell structure. One end of the second hood body (191) is fixed to the second ventilation port. The second end cap (192) is rotatably covered on the other end of the second hood body (191). A plurality of air inlets (194) are provided on the second hood body (191).

13. The heat dissipation system according to claim 1, characterized in that, The centerline of the radiator assembly (1) coincides with the rotation centerline of the hub (11); or, the center of gravity of the heat dissipation module is located on the rotation centerline of the hub (11).

14. The heat dissipation system according to any one of claims 1-11, characterized in that, The radiator assembly (1) includes a heat dissipation unit (14), which is fixed to the support assembly. Each medium delivery unit includes: Pump body (10); The first delivery pipeline (5) is connected between an interface of the pump body (10) and the hydraulic pitch system of the corresponding blade. The second delivery pipeline (6) is connected between another interface of the pump body (10) and the radiator assembly (1). The heat dissipation unit (14) is provided with a receiving cavity, which is connected to the pump body (10) through the second delivery pipeline (6).

15. The heat dissipation system according to claim 14, characterized in that, The heat dissipation module also includes an adapter plate (7), which is provided with through holes that match the first delivery pipe (5) and the second delivery pipe (6). The pump body (10) and the heat dissipation module are respectively disposed on both sides of the adapter plate (7). The pump body (10) is connected to the radiator assembly (1) through the second delivery pipe (6).

16. The heat dissipation system according to claim 1, characterized in that, The medium delivery unit also includes a pressure sensor (8) and a controller. The pressure sensor (8) is used to monitor the pressure information of the medium in the heat dissipation system, and the controller is used to control the pitch angle of the blades of the wind turbine generator set according to the pressure information.

17. The heat dissipation system according to claim 14, characterized in that, The radiator assembly (1) further includes an air guide shroud (13) and a cooling fan (12). The cooling fan (12) is disposed on the side of the heat dissipation unit (14) away from the support assembly, and the air guide shroud (13) is disposed between the cooling fan (12) and the heat dissipation unit (14).

18. A wind turbine generator set, characterized in that, The wind turbine generator set includes a hub (11), a hydraulic pitch system disposed on the hub (11), and a heat dissipation system as described in any one of claims 1-17.

19. A heat dissipation module for a hydraulic pitch system, characterized in that, The heat dissipation module includes: A bracket assembly for connection to the wheel hub (11); A radiator assembly (1) is fixed to the bracket assembly and configured to dissipate heat from the hydraulic pitch system of the wind turbine generator set.

Images