Heat dissipation device

Abstract

The utility model provides a heat dissipation device, and relates to the technical field of wind power generation. The heat dissipation device comprises a refrigeration assembly, an air supply pipe, a refrigeration fan, a controller and at least three first temperature sensors. One end of the air supply pipe is connected with the refrigeration assembly, the other end of the air supply pipe communicates with the variable pitch control cabinets, and the refrigeration fan is connected with the refrigeration assembly and located in the air supply pipe. The first temperature sensors are correspondingly arranged in the variable pitch control cabinets respectively; the controller is configured to control the refrigeration assembly and the refrigeration fan to be started at the same time when the temperature difference value between the variable pitch control cabinets is smaller than the preset temperature difference value and the temperature of at least one variable pitch control cabinet is larger than or equal to the preset temperature value. According to the heat dissipation device, when the temperature in the variable pitch control cabinet is too high, the refrigeration assembly is automatically started, cold air is conveyed into the variable pitch control cabinet through the refrigeration fan and the air supply pipe, the temperature in the variable pitch control cabinet is effectively reduced, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and more particularly to a heat dissipation device. Background Art

[0002] Wind power generation is a rapidly developing renewable energy technology in recent years. The pitch system is a crucial component of a wind turbine generator, used to adjust the wind turbine blades' angle of attack and change their rotational speed. Each blade has its own pitch control cabinet, and the main components of the pitch system are housed within their respective cabinets. Because the pitch system generates a significant amount of heat during operation, cooling measures are necessary for the pitch control cabinets.

[0003] In existing technologies, cooling fans are typically installed on each pitch control cabinet. When the temperature inside the pitch control cabinet is too high, the cooling fans are turned on to dissipate heat.

[0004] However, relying solely on a cooling fan to remove heat results in low cooling efficiency. Utility Model Content

[0005] This application provides a heat dissipation device to solve the problem of low heat dissipation efficiency when the pitch control cabinet dissipates heat through a cooling fan.

[0006] This application provides a heat dissipation device for a wind turbine generator set, including a cooling component, an air supply duct, a cooling fan, a controller, and at least three first temperature sensors;

[0007] The cooling component is used to install on the wind turbine generator set. One end of the air supply pipe is connected to the cooling component, and the other end of the air supply pipe is used to connect to each pitch control cabinet of the wind turbine generator set. The cooling fan is connected to the cooling component and is located inside the air supply pipe.

[0008] Each first temperature sensor is installed in each pitch control cabinet and detects the temperature inside the pitch control cabinet. The cooling component, cooling fan and first temperature sensor are all electrically connected to the controller.

[0009] The controller is configured to simultaneously start the cooling components and cooling fan when the temperature difference between each pitch control cabinet is less than a preset temperature difference and the temperature of at least one pitch control cabinet is greater than or equal to the preset temperature value.

[0010] In one possible implementation, the heat dissipation device provided in this application also includes an alarm module;

[0011] The alarm module is electrically connected to the controller. When the temperature difference between each pitch control cabinet is greater than or equal to the preset temperature difference, the controller controls the alarm module to issue an alarm prompt.

[0012] In one possible implementation, the heat dissipation device provided in this application includes a cooling component comprising a heat-conducting element, a heat sink, and at least one cooling chip.

[0013] The cooling chip is electrically connected to the controller, and the cooling chip has a cooling surface and a heat dissipation surface. When the cooling chip is started, the temperature of the cooling surface decreases and the temperature of the heat dissipation surface increases.

[0014] The cooling component is connected to the cooling surface, one end of the air supply duct is connected to the cooling component and together they form a receiving cavity, and the cooling fan is installed inside the receiving cavity.

[0015] The heat sink includes a base and multiple fins spaced apart on the base, with the base connected to the heat dissipation surface.

[0016] In one possible implementation, the heat dissipation device provided in this application has at least three cooling elements;

[0017] The cooling elements are arranged sequentially at intervals, with the cooling surface of each cooling element facing one side. The cooling conductive element covers the cooling surface of each cooling element, and the base covers the heat dissipation surface of each cooling element.

[0018] The controller is configured to: when the temperature inside at least one pitch control cabinet is greater than or equal to a first preset temperature value, control all cooling condensers to turn on simultaneously; when the temperature inside at least one pitch control cabinet is greater than or equal to a second preset temperature value, and the temperature inside each pitch control cabinet is less than the first preset temperature value, control two adjacent cooling condensers to turn on sequentially, while controlling the remaining cooling condensers to turn off; when the temperature inside at least one pitch control cabinet is greater than or equal to a third preset temperature value, and the temperature inside each pitch control cabinet is less than the second preset temperature value, control one cooling condenser to turn on sequentially, while controlling the remaining cooling condensers to turn off, until the temperature inside each pitch control cabinet is less than the third preset temperature value, and after a preset time, control the cooling condensers and cooling fans to turn off.

[0019] The first preset temperature value is greater than the second preset temperature value, and the second preset temperature value is greater than the third preset temperature value.

[0020] In one possible implementation, the heat dissipation device provided in this application further includes at least one second temperature sensor and at least one third temperature sensor;

[0021] Both the second and third temperature sensors are electrically connected to the controller.

[0022] The second temperature sensor is connected to the cooling surface to detect the temperature of the cooling surface, and the third temperature sensor is connected to the heat dissipation surface to detect the temperature of the heat dissipation surface.

[0023] When the temperature of at least one cooling surface is greater than or equal to the fourth preset temperature value, or when the temperature of at least one heat dissipation surface is greater than or equal to the fifth preset temperature value, the controller controls the alarm module to issue an alarm prompt.

[0024] In one possible implementation, the heat dissipation device provided in this application includes an air duct comprising a housing, a main pipe, and at least three branch pipes.

[0025] The housing is connected to the cooling conductor, and the housing and the cooling conductor together form a receiving cavity. The main pipe is connected to the housing to communicate with the receiving cavity. Each branch pipe is connected to the main pipe and is used to communicate with each pitch control cabinet respectively.

[0026] In one possible implementation, the heat dissipation device provided in this application, at least one of the branch pipe and the housing, is rotatably connected to the main pipe via a bearing, such that the branch pipe rotates with the pitch control cabinet relative to the cooling assembly.

[0027] In one possible implementation, the heat dissipation device provided in this application further includes at least one cooling fan.

[0028] The cooling fan is connected to at least one fin.

[0029] In one possible implementation, the heat dissipation device and cooling component provided in this application further include a dust filter;

[0030] The dust filter is installed on the side of the cooling fan that is away from the fins.

[0031] In one possible implementation, the heat dissipation device and cooling component provided in this application further include a water cooling device;

[0032] The water cooling device is connected to at least one fin.

[0033] The heat dissipation device provided in this application includes a cooling component, an air duct, a cooling fan, a controller, and at least three first temperature sensors. By placing each first temperature sensor inside each pitch control cabinet to detect the temperature of the pitch control cabinet, if the temperature difference between the cabinets is less than a preset temperature difference, it indicates that each first temperature sensor is working normally. If the temperature inside at least one pitch control cabinet is greater than or equal to the preset temperature value, the controller activates the cooling component and the cooling fan. After the cooling component is activated, the temperature of the side connected to the cooling fan decreases, thereby lowering the temperature of the surrounding air. The cooling fan blows the cold air around the cooling component, and the cold air is delivered to each pitch control cabinet through the air duct, thus achieving the effect of lowering the temperature inside the pitch control cabinet. Compared to a cooling fan that carries hot air out of the pitch control cabinet, the heat dissipation device of this application can directly deliver low-temperature cold air into the pitch control cabinet, and one device can simultaneously deliver cold air to multiple pitch control cabinets, thereby lowering the temperature inside each cabinet more quickly and improving the heat dissipation efficiency of the pitch control cabinet. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the heat dissipation device provided in the embodiments of this application;

[0036] Figure 2 This is a schematic diagram showing the connection between the cooling component and the cooling fan of the heat dissipation device provided in the embodiments of this application;

[0037] Figure 3 for Figure 1 Usage status diagram.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100 - Heat dissipation device;

[0040] 110 - Cooling component; 111 - Cooling conductor; 112 - Heat sink; 1121 - Fins; 113 - Cooling element; 114 - Cooling fan; 115 - Water cooling device;

[0041] 120 - Air supply duct; 121 - Shell; 122 - Main pipe; 123 - Branch pipe;

[0042] 130 - Cooling fan;

[0043] 200-Pitch Control Cabinet.

[0044] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0046] First, let me explain the terms used in this application:

[0047] Semiconductor cooling chip: This is a cooling technology that uses the Peltier effect of semiconductor materials to achieve cooling. It consists of multiple N-type and P-type semiconductor particles arranged in a row, with conductors and ceramic plates connected to its two ends respectively. When direct current is applied, one end absorbs heat and cools down, while the other end releases heat and heats up, forming a cold end and a hot end.

[0048] As shown in the background section, in the prior art, when heat dissipating the pitch control cabinet, it is usually necessary to install a cooling fan on each pitch control cabinet. When the temperature inside the pitch control cabinet is too high, the cooling fan is turned on to dissipate heat. However, the cooling fan can only remove the heat from the pitch control cabinet by promoting airflow. Especially in environments with high air temperature, the air temperature outside the pitch control cabinet is also very high, resulting in low heat dissipation efficiency of the cooling fan, which is difficult to meet the actual needs of the pitch control cabinet.

[0049] To address the aforementioned technical problems, this application provides a heat dissipation device comprising a cooling component, an air duct, a cooling fan, a controller, and at least three first temperature sensors. The cooling component is mounted on the wind turbine generator set. One end of the air duct is connected to the cooling component, and the other end is connected to the pitch control cabinet. The cooling fan is disposed within the air duct, and each of the first temperature sensors is disposed within its respective pitch control cabinet. When the first temperature sensor detects that the temperature difference within each pitch control cabinet is less than a preset value, and the temperature of at least one pitch control cabinet is greater than or equal to the preset temperature value, the controller activates the cooling component and the cooling fan simultaneously. After the cooling component is activated, the temperature of the side connected to the cooling fan decreases, thereby lowering the ambient air temperature. The cooling fan then blows cold air along the air duct to each pitch control cabinet, further reducing the temperature within the cabinet. Thus, when the temperature within at least one pitch control cabinet is too high, the heat dissipation device automatically activates, simultaneously supplying cold air to each cabinet, achieving rapid cooling and improving heat dissipation efficiency.

[0050] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings:

[0051] See Figure 1 , Figure 2 and Figure 3 As shown, the heat dissipation device 100 of this application embodiment is used for a wind turbine generator set, including a cooling component 110, an air supply duct 120, a cooling fan 130, a controller (not shown in the figure), and at least three first temperature sensors (not shown in the figure). The cooling component 110 is used to be installed on the wind turbine generator set. One end of the air supply duct 120 is connected to the cooling component 110, and the other end of the air supply duct 120 is used to communicate with each pitch control cabinet 200 of the wind turbine generator set. The cooling fan 130 is connected to the cooling component 110 and is located inside the air supply duct 120. Each first temperature sensor is used to be installed in each pitch control cabinet 200 and to detect the temperature inside the pitch control cabinet 200. The cooling component 110, the cooling fan 130, and the first temperature sensors are all electrically connected to the controller. The controller is configured to control the cooling component 110 and the cooling fan 130 to start simultaneously when the temperature difference between each pitch control cabinet 200 is less than a preset temperature difference value, and the temperature of at least one pitch control cabinet 200 is greater than or equal to a preset temperature value.

[0052] In this application, the cooling component 110 is installed on the wind turbine generator set. When the cooling component 110 is started, the temperature of the side of the cooling component 110 connected to the cooling fan 130 drops rapidly, thereby lowering the temperature of the surrounding air to form cold air. The cooling fan 130 then blows the cold air along the air supply duct 120 to the pitch control cabinet 200, thereby reducing the temperature inside the pitch control cabinet 200 and achieving the effect of heat dissipation. Using the air supply duct 120 to simultaneously deliver the cold air generated by one cooling component 110 to multiple pitch control cabinets 200 can, on the one hand, reduce heat dissipation costs by using one cooling component 110 to dissipate heat from multiple pitch control cabinets 200; on the other hand, compared to directly installing the cooling component 110 inside the pitch control cabinet 200, delivering cold air through the air supply duct 120 can act as a buffer, preventing the hot air inside the pitch control cabinet 200 from quickly condensing or even freezing upon contact with the cooler cooling component 110, which would affect the operation of the equipment inside the pitch control cabinet 200.

[0053] The specific connection method between the cooling component 110 and the wind turbine generator set is not limited in this application, as long as the end of the air supply duct 120 connected to the pitch control cabinet 200 can rotate with the pitch control cabinet 200. For example, the cooling component 110 can be installed in the generator nacelle of the wind turbine generator set and connected to the main shaft in the nacelle, so that the cooling component 110 can rotate with the main shaft, thereby ensuring that the end of the air supply duct 120 connected to each pitch control cabinet 200 can rotate with each pitch control cabinet 200, ensuring the stability of the connection between the air supply duct 120 and the pitch control cabinet 200; or, the cooling component 110 can be fixed in the nacelle, keeping the cooling component 110 stationary, and the air supply duct 120 can be rotatably connected to the cooling component 110, thereby allowing the air supply duct 120 to rotate with the pitch control cabinet 200.

[0054] In practical implementation, each first temperature sensor is installed inside each pitch control cabinet 200 to detect the temperature inside each pitch control cabinet 200. If the temperature difference between each pitch control cabinet 200 is too large, it may be due to a malfunction of one of the first temperature sensors. Therefore, the first temperature sensor needs to be repaired before deciding whether to start the cooling assembly 110 and the cooling fan 130. When the temperature difference between each pitch control cabinet 200 is less than the preset temperature difference, it proves that each first temperature sensor is operating normally. If the temperature of at least one pitch control cabinet 200 is greater than or equal to the preset temperature value, the controller controls the cooling assembly 110 and the cooling fan 130 to start simultaneously. The cooling fan 130 blows the cold air generated by the cooling assembly 110 into each pitch control cabinet 200 through the air supply duct 120, thereby cooling multiple pitch control cabinets 200 simultaneously.

[0055] In this way, when the temperature inside the pitch control cabinet 200 is too high, the controller controls the cooling component 110 to quickly reduce the temperature, and delivers the generated cold air to each pitch control cabinet 200 through the cooling fan 130 and the air supply duct 120. Compared with the cooling fan 114 expelling hot air, delivering cold air to the pitch control cabinet 200 can achieve the cooling effect faster and more efficiently, thereby improving the heat dissipation efficiency of the pitch control cabinet 200.

[0056] See also some of the possible implementation methods. Figure 3 As shown in the figure, this embodiment of the application also includes an alarm module (not shown in the figure); the alarm module is electrically connected to the controller, and when the temperature difference between each pitch control cabinet 200 is greater than or equal to a preset temperature difference, the controller controls the alarm module to issue an alarm prompt.

[0057] It is understandable that the ambient temperature and operating conditions of each pitch control cabinet 200 are basically the same, and the temperature inside each pitch control cabinet 200 should not differ significantly. If the temperature difference detected by the first temperature sensor between the pitch control cabinets 200 is too large, it indicates that at least one of the first temperature sensors is malfunctioning, resulting in a large detection error. In this case, the cooling component 110 cannot be directly turned on; the first temperature sensor needs to be inspected by personnel first. Therefore, an alarm module is set up. When the temperature difference is greater than or equal to a preset temperature difference value, the controller controls the alarm module to issue an alarm prompt to remind personnel to carry out inspection.

[0058] The alarm module can be a buzzer that issues an alarm through sound signals, or a warning light that issues an alarm through light signals. This application does not limit the specific structural form of the alarm module, as long as it can promptly remind staff to carry out maintenance.

[0059] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, the refrigeration assembly 110 of this application embodiment includes a cooling conductor 111, a heat sink 112, and at least one cooling chip 113; the cooling chip 113 is electrically connected to the controller, and the cooling chip 113 has a cooling surface and a heat dissipation surface. When the cooling chip 113 is started, the temperature of the cooling surface decreases and the temperature of the heat dissipation surface increases; the cooling conductor 111 is connected to the cooling surface, one end of the air duct 120 is connected to the cooling conductor 111, and together with the cooling conductor 111, they form a receiving cavity, and the refrigeration fan 130 is disposed in the receiving cavity; the heat sink 112 includes a base (not shown in the figure) and a plurality of fins 1121 spaced apart on the base, and the base is connected to the heat dissipation surface.

[0060] In some embodiments, the cooling chip 113 can be a semiconductor cooling chip. When the temperature inside the pitch control cabinet 200 is too high, the controller supplies DC power to the cooling chip 113, causing the cooling surface of the cooling chip 113 to absorb heat and cool down, while the heat dissipation surface releases heat and heats up. The cooling conductor 111 is connected to the cooling surface of the cooling chip 113. If there are multiple cooling chips 113, they are arranged side by side with their cooling surfaces facing one side. The cooling conductor 111 covers all the cooling chips 113. The specific number of cooling chips 113 is not limited in this application. After the cooling surface temperature decreases, the cooling conductor 111 increases the contact area with the air, thereby rapidly reducing the air temperature inside the cavity to form cold air. The cooling fan 130 inside the cavity then blows the cold air, which is transported to each pitch control cabinet 200 along the air supply duct 120. The cooling conductor 111 can be composed of multiple metal sheets with good thermal conductivity. Its specific structure is not limited in this application, as long as it can achieve cooling and increase the contact area with the air.

[0061] Heat sink 112 is disposed on the heat dissipation surface to improve the heat dissipation efficiency of the heat dissipation surface and ensure the long-term normal operation of the cooling chip 113. Specifically, heat sink 112 includes a base and multiple fins 1121. The heat dissipation surface is connected to the base and transfers heat to the fins 1121 through the base. The multiple fins 1121 are spaced apart on the base, resulting in a larger surface area in contact with the air, which can better increase the heat dissipation area, improve the heat dissipation efficiency of the cooling chip 113, and effectively extend the service life of the cooling chip 113.

[0062] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3As shown, in this embodiment of the application, the number of cooling chips 113 is at least three; the cooling chips 113 are arranged sequentially at intervals, and the cooling surface of each cooling chip 113 faces one side. The cooling conductor 111 covers the cooling surface of each cooling chip 113, and the base covers the heat dissipation surface of each cooling chip 113. The controller is configured to control each cooling chip 113 to turn on simultaneously when the temperature inside at least one pitch control cabinet 200 is greater than or equal to a first preset temperature value; and to control each cooling chip 113 to turn on simultaneously when the temperature inside at least one pitch control cabinet 200 is greater than or equal to a second preset temperature value, and the temperature inside each pitch control cabinet 200 is less than the first preset temperature value. The system controls two adjacent cooling elements 113 to turn on sequentially, while simultaneously controlling the remaining cooling elements 113 to turn off. When the temperature inside at least one pitch control cabinet 200 is greater than or equal to a third preset temperature value, and the temperature inside each pitch control cabinet 200 is less than a second preset temperature value, the system controls one cooling element 113 to turn on sequentially, while simultaneously controlling the remaining cooling elements 113 to turn off. After the temperature inside each pitch control cabinet 200 is less than the third preset temperature value, the system controls the cooling elements 113 and the cooling fan 130 to turn off after a preset time. The first preset temperature value is greater than the second preset temperature value, and the second preset temperature value is greater than the third preset temperature value.

[0063] It should be noted that the number of cooling elements 113 is set to at least three, so that the number of cooling elements 113 activated can be adjusted according to different temperatures of the pitch control cabinet 200. All cooling elements 113 are arranged on the same plane, with their cooling surfaces and heat dissipation surfaces facing the same side. This allows the cooling conductor 111 to cover all cooling surfaces, enabling one cooling conductor 111 to conduct heat to all cooling elements 113. The base of the heat sink 112 covers the heat dissipation surface, allowing a set of heat sinks 112 to dissipate heat to all cooling elements 113.

[0064] Furthermore, when the temperature of at least one pitch control cabinet 200 is greater than or equal to the first preset temperature value, all cooling coils 113 are energized. This generates a large amount of cold air at the fastest speed, which is then blown into the pitch control cabinet 200 by the cooling fan 130. When the temperature of all pitch control cabinets 200 is less than the first preset temperature value and the temperature of at least one pitch control cabinet 200 is greater than or equal to the second preset temperature value, energizing only two cooling coils 113 is sufficient to achieve heat dissipation. In addition, after two cooling coils 113 have been energized for a certain period of time, the energization is switched to two other cooling coils 113, and the two previously energized cooling coils 113 are de-energized. This ensures the working time of each cooling coil 113. The basic temperature is consistent, thus ensuring the service life of the cooling component 110. When the temperature of each pitch control cabinet 200 is lower than the second preset temperature value, and the temperature of at least one pitch control cabinet 200 is greater than or equal to the third preset temperature value, only one cooling chip 113 needs to be turned on to meet the heat dissipation requirements. The working time of each cooling chip 113 is guaranteed by turning on each cooling chip 113 in sequence and turning off the other cooling chips 113. After the temperature inside all pitch control cabinets 200 drops to below the third preset temperature value, one cooling chip 113 needs to continue to be powered on for a certain period of time to maintain the temperature inside the pitch control cabinet 200. After being powered on for a certain period of time, the controller can control the cooling chip 113 and the cooling fan 130 to turn off.

[0065] In this way, by selecting to activate different numbers of cooling coils 113 based on the temperature conditions inside the pitch control cabinet 200, the number of cooling coils 113 activated can be minimized while ensuring cooling efficiency, thereby saving the operating cost of the heat dissipation device 100.

[0066] See also some of the possible implementation methods. Figure 1 As shown, this embodiment of the application further includes at least one second temperature sensor (not shown) and at least one third temperature sensor (not shown); both the second and third temperature sensors are electrically connected to the controller; the second temperature sensor is connected to the cooling surface to detect the temperature of the cooling surface, and the third temperature sensor is connected to the heat dissipation surface to detect the temperature of the heat dissipation surface; when the temperature of at least one cooling surface is greater than or equal to a fourth preset temperature value, or when the temperature of at least one heat dissipation surface is greater than or equal to a fifth preset temperature value, the controller controls the alarm module to issue an alarm prompt.

[0067] In practical implementation, a second temperature sensor is installed on the cooling surface of each cooler 113, and a third temperature sensor is installed on the heat dissipation surface of each cooler 113. When an excessively high temperature is detected on a certain cooling or heat dissipation surface, it indicates that the cooler 113 has malfunctioned or is insufficient to dissipate heat for the pitch controller. The controller then controls the alarm module to issue an alarm to remind personnel to check the condition of the heat dissipation device 100 and take appropriate measures. The alarm module can be a buzzer, issuing an alarm through an audible signal, or a warning light, issuing an alarm through a visual signal, etc. The specific structural form of the alarm module is not limited in this application, as long as it can promptly remind personnel of a malfunction in the heat dissipation device 100.

[0068] In addition, to improve the accuracy of alarm prompts, it can be set to issue an alarm only after the second or third temperature sensor has continuously detected that the temperature is too high for a certain period of time, thus avoiding false alarms.

[0069] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, the air supply duct 120 in this embodiment of the application includes a housing 121, a main pipe 122 and at least three branch pipes 123; the housing 121 is connected to the cooling conductor 111, and the housing 121 and the cooling conductor 111 together form a receiving cavity; the main pipe 122 is connected to the housing 121 to communicate with the receiving cavity; each branch pipe 123 is connected to the main pipe 122; and each branch pipe 123 is used to communicate with each pitch control cabinet 200 respectively.

[0070] It should be noted that the housing 121 is fixed on the cooling guide 111, and together with the cooling guide 111, they form a receiving cavity to provide installation space for the cooling fan 130. The main pipe 122 is connected to the branch pipe 123. The pitch control cabinet 200 is connected to the receiving cavity through the branch pipe 123 and the main pipe 122, so that the cooling fan 130 can blow the cold air in the receiving cavity into each pitch control cabinet 200 to reduce the temperature inside the pitch control cabinet 200.

[0071] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment of the application, at least one of the branch pipe 123 and the housing 121 is rotatably connected to the main pipe 122 via a bearing, so that the branch pipe 123 rotates with the pitch control cabinet 200 relative to the cooling assembly 110.

[0072] In some embodiments, if the cooling assembly 110 is fixed in the generator nacelle and remains stationary, the end of the branch pipe 123 that is connected to the pitch control cabinet 200 needs to rotate with the pitch control cabinet 200 in order to improve the stability of the connection between the pitch control cabinet 200 and the branch pipe 123.

[0073] For example, the housing 121 is fixedly connected to the cooling component 111, the main pipe 122 is rotatably connected to the housing 121 via a bearing, and each branch pipe 123 is fixedly connected to and communicates with the main pipe 122. In this way, when each pitch control cabinet 200 rotates, the branch pipe 123 drives the main pipe 122 to rotate relative to the housing 121. Alternatively, the main pipe 122 is fixedly connected to the housing 121, and a conversion joint (not shown in the figure) is provided between each branch pipe 123 and the main pipe 122. The conversion joint is rotatably connected to the main pipe 122 via a bearing, and each branch pipe 123 is communicated with the main pipe 122 via the conversion joint, so that each branch pipe 123 can rotate relative to the main pipe 122 simultaneously. Alternatively, the main pipe 122 and the housing 121, and the branch pipe 123 and the main pipe 122 can all be rotatably connected to each other to improve the flexibility of the air supply pipe 120, thereby improving the stability of the connection between the air supply pipe 120 and the cooling component 110 and the pitch control cabinet 200.

[0074] See also some of the possible implementation methods. Figure 2 As shown, the cooling component 110 in this embodiment of the application further includes at least one cooling fan 114; the cooling fan 114 is connected to at least one fin 1121.

[0075] It is understood that at least one cooling fan 114 is provided on the heat sink 112 to improve the heat dissipation efficiency of the heat sink 112, thereby ensuring the cooling effect of the cooling plate 113. The cooling fan 114 can be connected to one fin 1121 and set on the surface of the fin 1121, or it can cover multiple fins 1121 at the same time. The specific connection method is not limited in this application.

[0076] See also some of the possible implementation methods. Figure 2 As shown, the cooling component 110 in this embodiment of the application also includes a dust filter (not shown in the figure); the dust filter is disposed on the side of the cooling fan 114 away from the fins 1121.

[0077] In practice, the dust filter is placed on the side of the cooling fan 114 away from the fins 1121 to prevent dust from entering the cooling fan 114 and adhering to the fan blades, thus affecting the cooling effect of the cooling fan 114.

[0078] See also some of the possible implementation methods. Figure 1 and Figure 2 As shown, the refrigeration assembly 110 in this embodiment of the application further includes a water cooling device 115; the water cooling device 115 is connected to at least one fin 1121.

[0079] In some embodiments, a water-cooling device 115 is also provided on the fins 1121 of the heat sink 112 to dissipate heat from the heat sink 112, thereby improving the heat dissipation efficiency of the heat sink 112, ensuring the working efficiency of the cooling chip 113, and improving the heat dissipation efficiency of the heat dissipation device 100.

[0080] In summary, the heat dissipation device 100 provided in this application embodiment includes a cooling component 110, an air duct 120, a cooling fan 130, a controller, and at least three first temperature sensors. The first temperature sensors are used to detect the temperature inside each pitch control cabinet 200. When the temperature inside at least one pitch control cabinet 200 is too high, the controller controls the cooling component 110 and the cooling fan 130 to start. The temperature of the cooling surface of the cooling plate 113 in the cooling component 110 decreases, thereby generating low-temperature cold air. The cooling fan 130 delivers the cold air to each pitch control cabinet 200 through the air duct 120, thereby quickly reducing the temperature inside the pitch control cabinet 200, effectively improving heat dissipation efficiency, and ensuring the normal operation of the equipment inside the pitch control cabinet 200.

[0081] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or 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 the embodiments of this application according to the specific circumstances.

[0082] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0083] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0084] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0085] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0086] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0087] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0088] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A heat dissipation device for a wind turbine generator set, characterized in that, It includes a cooling assembly, an air duct, a cooling fan, a controller, and at least three primary temperature sensors; The cooling component is used to be installed on the wind turbine generator set. One end of the air supply pipe is connected to the cooling component, and the other end of the air supply pipe is used to communicate with each pitch control cabinet of the wind turbine generator set. The cooling fan is connected to the cooling component and is located inside the air supply pipe. Each of the first temperature sensors is respectively installed in each of the pitch control cabinets and detects the temperature inside the pitch control cabinet. The cooling component, the cooling fan and the first temperature sensor are all electrically connected to the controller. The controller is configured to simultaneously start the cooling component and the cooling fan when the temperature difference between each of the pitch control cabinets is less than a preset temperature difference, and the temperature of at least one of the pitch control cabinets is greater than or equal to a preset temperature value.

2. The heat dissipation device according to claim 1, characterized in that, It also includes an alarm module; The alarm module is electrically connected to the controller. When the temperature difference between each pitch control cabinet is greater than or equal to the preset temperature difference, the controller controls the alarm module to issue an alarm prompt.

3. The heat dissipation device according to claim 2, characterized in that, The refrigeration assembly includes a heat-conducting component, a heat sink, and at least one refrigeration chip; The cooling chip is electrically connected to the controller, and the cooling chip has a cooling surface and a heat dissipation surface. When the cooling chip is activated, the temperature of the cooling surface decreases and the temperature of the heat dissipation surface increases. The cooling component is connected to the cooling surface, one end of the air supply pipe is connected to the cooling component and together with the cooling component form a receiving cavity, and the cooling fan is disposed in the receiving cavity; The heat sink includes a base and a plurality of fins spaced apart on the base, and the base is connected to the heat dissipation surface.

4. The heat dissipation device according to claim 3, characterized in that, The number of the cooling elements is at least three; The cooling elements are arranged sequentially at intervals, with the cooling surface of each cooling element facing one side. The heat-conducting component covers the cooling surface of each cooling element, and the base covers the heat-dissipating surface of each cooling element. The controller is configured to: when the temperature in at least one pitch control cabinet is greater than or equal to a first preset temperature value, control all the cooling elements to turn on simultaneously; when the temperature in at least one pitch control cabinet is greater than or equal to a second preset temperature value, and the temperature in each pitch control cabinet is less than the first preset temperature value, control two adjacent cooling elements to turn on sequentially, while controlling the remaining cooling elements to turn off; when the temperature in at least one pitch control cabinet is greater than or equal to a third preset temperature value, and the temperature in each pitch control cabinet is less than the second preset temperature value, control one cooling element to turn on sequentially, while controlling the remaining cooling elements to turn off, until the temperature in each pitch control cabinet is less than the third preset temperature value, then control the cooling elements and the cooling fan to turn off after a preset time. The first preset temperature value is greater than the second preset temperature value, and the second preset temperature value is greater than the third preset temperature value.

5. The heat dissipation device according to claim 3, characterized in that, It also includes at least one second temperature sensor and at least one third temperature sensor; Both the second temperature sensor and the third temperature sensor are electrically connected to the controller; The second temperature sensor is connected to the cooling surface to detect the temperature of the cooling surface, and the third temperature sensor is connected to the heat dissipation surface to detect the temperature of the heat dissipation surface. When the temperature of at least one of the cooling surfaces is greater than or equal to a fourth preset temperature value, or when the temperature of at least one of the heat dissipation surfaces is greater than or equal to a fifth preset temperature value, the controller controls the alarm module to issue an alarm prompt.

6. The heat dissipation device according to claim 3, characterized in that, The air supply duct includes a housing, a main pipe, and at least three branch pipes; The housing is connected to the cooling conductor, and the housing and the cooling conductor together form the receiving cavity. The main pipe is connected to the housing to communicate with the receiving cavity. Each of the branch pipes is connected to the main pipe, and each of the branch pipes is used to communicate with each of the pitch control cabinets respectively.

7. The heat dissipation device according to claim 6, characterized in that, At least one of the branch pipe and the housing is rotatably connected to the main pipe via a bearing, such that the branch pipe rotates with the pitch control cabinet relative to the refrigeration assembly.

8. The heat dissipation device according to claim 3, characterized in that, The cooling assembly also includes at least one cooling fan; The cooling fan is connected to at least one of the fins.

9. The heat dissipation device according to claim 8, characterized in that, The refrigeration component also includes a dust filter; The dustproof mesh is disposed on the side of the cooling fan that is away from the fins.

10. The heat dissipation device according to any one of claims 3 to 9, characterized in that, The refrigeration assembly also includes a water cooling device; The water-cooling device is connected to at least one fin.

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