Heat dissipation system of wind generating set
By designing a combination system of internal and external radiators and fans in a wind turbine, using coolant recycling and air circulation, the poor heat dissipation effect and space occupation of water-cooled heat dissipation systems under high heat generation, achieving more efficient Heat dissipation and space savings.
Patent Information
- Application Number
- CN202421204696.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-29
AI Technical Summary
In the face of increasing the heat generation, the water-cooled cooling system of existing wind turbines leads to poor heat dissipation effect of the internal components of the equipment, and the increase in water-cooled pipelines occupy the space of the cabin, affecting the equipment layout and overall volume.
Design a wind turbine heat dissipation system, including installing a first radiator inside the cabin and installing a second radiator outside, and using a fan to transport air to the first radiator, and the coolant is exchanged externally through the second radiator. It is then transported to the first radiator to realize the recycle of coolant and further reduce the internal temperature of the tank.
It effectively reduces the interior ambient temperature of the cabin, improves the component heat dissipation effect, reduces the installation and layout needs of the later heat dissipation device, and saves the interior space of the cabin.
Smart Images
Figure CN222228759U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heat dissipation equipment technology, and specifically relates to a heat dissipation system for wind turbine generator sets. Background Technology
[0002] Offshore wind turbine nacelles contain heat-generating components such as transformers, gearboxes, and converters. The ambient temperature is crucial for ensuring normal operation of the unit; however, the operation generates a significant amount of heat, which, if not addressed promptly, can shorten the equipment's lifespan and consequently impact power generation efficiency.
[0003] Due to limited space within the nacelle, wind turbine cooling systems are mostly water-cooled. Compared to air-cooled systems, water-cooled systems offer higher heat dissipation efficiency and greater environmental adaptability. However, with the development of wind power technology and increasing power generation, the heat generated by the equipment also increases. Simply enlarging the water-cooling piping can affect the layout of various components inside the nacelle and easily lead to an increase in the overall size of the nacelle. Utility Model Content
[0004] This utility model provides a wind turbine generator cooling system, which aims to solve the problem that the existing water-cooled cooling system inside the generator nacelle cannot effectively dissipate heat from the internal components.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a wind turbine generator cooling system, comprising:
[0006] The first radiator is installed inside the cabin. The first radiator is provided with first fins for the flow of coolant. The outlet end of the first fins is connected to the heat dissipation end of the component inside the cabin.
[0007] A fan, installed on one side of the first radiator, is used to deliver air from inside the chamber to the first fins;
[0008] The second radiator is installed outside the cabin. The second radiator is provided with second fins for coolant flow, and the liquid outlet of the second fin is connected to the liquid inlet of the first fin. The liquid inlet of the second fin is connected to the heat dissipation end of the internal components of the cabin.
[0009] A power unit is disposed between the first fin and the second fin, and is used to transport the coolant inside the first fin to the inside of the second fin.
[0010] In one possible implementation, the liquid outlet end of the first fin is connected to a plurality of liquid delivery pipes, which are arranged in parallel with each other, and the liquid delivery pipes are used to deliver coolant to a plurality of components inside the chamber.
[0011] In one possible implementation, there are multiple second heat sinks, and the second fins on the multiple second heat sinks are arranged in parallel with each other.
[0012] In one possible implementation, a control valve for adjusting the coolant flow rate is installed at the inlet or outlet end of the second fin.
[0013] In one possible implementation, the second radiator has a plurality of second fins arranged at intervals along the vertical direction, and a plurality of third fins are connected in abutting position between two adjacent second fins. The third fins are provided with a plurality of heat dissipation plates bent to accelerate the heat dissipation of the second fins.
[0014] In one possible implementation, two adjacent heat sinks form an airflow channel for air circulation, and the length direction of the second fin is defined as a first direction. Along the first direction, the cross-sectional area of the airflow channels at both ends of the second heat sink is smaller than the cross-sectional area of the airflow channel in the middle.
[0015] In one possible implementation, along the first direction, the gap between two adjacent heat sinks at both ends of the second radiator is smaller than the gap between two adjacent heat sinks located in the middle of the second radiator.
[0016] In one possible implementation, the middle section of the second radiator along the first direction is defined as the air exchange section, and the density of the heat dissipation plate between two adjacent second fins gradually increases from bottom to top.
[0017] The solution shown in this application, compared with the prior art, involves installing a first radiator inside the cabin and a second radiator outside the cabin. A fan is installed on one side of the first radiator, and the fan and the first radiator are installed together inside the cabin. The fan can transport air inside the cabin to the first radiator to cool the environment inside the cabin. In use, the coolant is cooled by heat exchange through the second radiator and then transported to the first radiator. The first radiator cools the ambient temperature inside the cabin. The coolant is then transported to the heat dissipation ends of the components inside the cabin for further heat dissipation, and then flows back to the second radiator outside the cabin for cooling and heat exchange, allowing the coolant to be recycled. This application can first cool the ambient temperature inside the cabin with coolant before it flows to the heat dissipation ends of the components, thereby achieving a further heat dissipation effect inside the cabin, reducing the installation and layout of subsequent heat dissipation devices, and saving overall space inside the cabin. Attached Figure Description
[0018] Figure 1 A schematic diagram of the structure of the wind turbine generator cooling system provided in this embodiment of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the second heat sink provided in an embodiment of the present utility model;
[0020] Figure 3 for Figure 2 A magnified view of part A in the middle.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. First radiator; 2. Fan; 3. Second radiator; 31. Second fin; 32. Third fin; 321. Heat dissipation plate; 33. Air exchange section; 4. Power unit; 5. Infusion pipe; 6. Control valve. Detailed Implementation
[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0024] Please refer to the following: Figures 1 to 3 The present invention provides a description of a wind turbine generator cooling system. The wind turbine generator cooling system includes a first radiator 1, a fan 2, a second radiator 3, and a power unit 4. The first radiator 1 is installed inside the nacelle and has first fins for coolant flow. The outlet end of the first fin is connected to the heat dissipation end of an internal component within the nacelle. The fan 2 is installed on one side of the first radiator 1 to deliver air from inside the nacelle to the first fins. The second radiator 3 is installed outside the nacelle and has second fins 31 for coolant flow. The outlet end of the second fin 31 is connected to the inlet end of the first fin, and the inlet end of the second fin 31 is connected to the heat dissipation end of an internal component within the nacelle. The power unit 4 is located between the first fin and the second fin 31 and delivers coolant from inside the first fin to inside the second fin 31.
[0025] The wind turbine generator cooling system provided in this embodiment, compared with the prior art, has a first radiator 1 installed inside the nacelle and a second radiator 3 installed outside the nacelle. A fan 2 is installed on one side of the first radiator 1, and the fan 2 is installed inside the nacelle along with the first radiator 1. The fan 2 can transport the air inside the nacelle to the first radiator 1 to cool the environment inside the nacelle. In this application, during use, the coolant is cooled by heat exchange through the external second radiator 3 and then transported to the first radiator 1. The first radiator 1 cools the ambient temperature inside the nacelle. The coolant is then transported to the heat dissipation ends of the components inside the nacelle for further heat dissipation, and then flows back to the external second radiator 3 for cooling and heat exchange, so that the coolant can be recycled. This application can first cool the ambient temperature inside the nacelle with coolant before it flows to the heat dissipation ends of the components, thereby achieving a further heat dissipation effect inside the nacelle, reducing the installation and layout of subsequent heat dissipation devices, and saving overall space inside the nacelle.
[0026] Specifically, in this embodiment, the heat dissipation end of the components inside the cabin is a liquid cooling plate used for heat exchange and cooling of the components.
[0027] Specifically, in this embodiment, the power unit 4 includes a water pump for driving the circulation of coolant.
[0028] In some embodiments, the first fin described above may be as follows: Figure 1 The structure shown. See also Figure 1 The first fin has multiple liquid delivery pipes 5 connected to its liquid outlet end. These multiple liquid delivery pipes 5 are arranged in parallel and are used to deliver coolant to multiple components inside the chamber. A flow channel for coolant circulation is provided in the middle of the first fin and the second fin 31. The liquid outlet end of the first fin is connected to multiple liquid delivery pipes 5, which are used to deliver coolant to the heat dissipation ends of multiple components inside the chamber. After exiting through the heat dissipation ends, the coolant flows into the interior of the second fin 31 on the second radiator 3. The parallel arrangement of the multiple liquid delivery pipes 5 ensures that all components inside the chamber receive effective heat dissipation.
[0029] In some embodiments, the second heat sink 3 described above may be as follows: Figure 1 The structure shown. See also Figure 1 There are multiple second radiators 3, and the second fins 31 on the multiple second radiators 3 are arranged in parallel. The multiple second radiators 3 and the parallel arrangement of the second fins 31 on the multiple second radiators 3 allow the high-temperature coolant to be delivered to the second fins 31 inside the multiple second radiators 3, which can more effectively dissipate heat from the coolant. In addition, the second radiators 3 are located on the outside of the compartment and do not occupy the space inside the compartment.
[0030] Preferably, in this embodiment, a fan 2 is also installed on one side of the second radiator 3 to deliver outside air to the second fin 31 for heat exchange and to reduce the temperature of the coolant inside the second fin 31.
[0031] In some embodiments, the second fin 31 may be adopted as follows: Figure 1 The structure shown. See also Figure 1 A control valve 6 for adjusting the coolant flow rate is installed at the inlet or outlet end of the second fin 31. The flow rate of coolant flowing inside the second fin 31 can be adjusted by the control valve 6. Furthermore, a temperature sensor is installed at the output end of the second fin 31, which can adjust the opening and closing of the control valve 6 according to the temperature of the coolant output from the second fin 31, ensuring that all multiple second radiators 3 can effectively perform their heat dissipation and cooling functions.
[0032] In some embodiments, the second heat sink 3 described above may be as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 The second radiator 3 has multiple second fins 31 arranged vertically at intervals. Multiple third fins 32 are connected and abut against each other between adjacent second fins 31. Multiple heat dissipation plates 321 are bent and disposed on the third fins 32 to accelerate the heat dissipation of the second fins 31. Coolant is supplied along the length of the second fins 31, and outside air flows through the gap between two adjacent second fins 31 via a fan 2. The two sides of the heat dissipation plates 321 abut against two adjacent second fins 31, thereby accelerating the heat dissipation effect of the second fins 31.
[0033] Preferably, in this embodiment, the third fin 32 is bent and disposed between two adjacent second fins 31. The second fin 31 includes abutment plate and heat dissipation plate 321, which are integrally bent. The abutment plate is used to abut against the side of the second fin 31 to increase the contact area between the abutment plate and the second fin 31. The heat dissipation plate 321 is arranged perpendicular to the abutment plate and is used to connect the two adjacent abutment plates.
[0034] Specifically, in this embodiment, the third fin 32 is installed at the air inlet and air outlet formed between two adjacent second fins 31.
[0035] In some embodiments, the third fin 32 may be adopted as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3Two adjacent heat sinks 321 form airflow channels for air circulation. The length direction of the second fin 31 is defined as the first direction. Along this first direction, the cross-sectional area of the airflow channels at both ends of the second radiator 3 is smaller than the cross-sectional area of the middle airflow channel. During operation, the fan 2 delivers outside air into the multiple airflow channels of the second radiator 3. By making the cross-sectional area of the transverse ribs of the airflow channels on both sides of the second radiator 3 smaller than that of the middle airflow channel, the airflow velocity entering the second radiator 3 is different, thereby enhancing the turbulence effect of the airflow inside the second radiator 3 and thus enhancing the heat dissipation effect on the coolant inside the second fin 31.
[0036] Specifically, in this embodiment, the cross-sectional area of the airflow channel can be changed according to the thickness of the heat sink 321 or the second fin, or according to the density of the heat sink 321.
[0037] In some embodiments, the second heat sink 3 described above may be as follows: Figure 2 The structure shown. See also Figure 2 Along the first direction, the gap between two adjacent heat dissipation plates 321 at both ends of the second radiator 3 is smaller than the gap between two adjacent heat dissipation plates 321 in the middle of the second radiator 3. By reducing the distance between adjacent heat dissipation plates 321 at both ends of the second radiator 3, the airflow speed at both ends of the second radiator 3 can be increased. The distance between two adjacent heat dissipation plates 321 is smaller than the distance between two adjacent heat dissipation plates 321 in the middle of the second radiator 3, thereby increasing the density of the heat dissipation plates 321 at both ends of the second radiator 3. This causes a change in the airflow velocity after the air enters the airflow channel inside the second radiator 3, enhancing the turbulence effect of the internal airflow and strengthening the heat dissipation effect on the second fins 31.
[0038] In some embodiments, the second heat sink 3 described above may be as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 The middle section of the second radiator 3 along the first direction is defined as the air exchange section 33. The density of the heat dissipation plates 321 between adjacent second fins 31 gradually increases from bottom to top. The heat dissipation plates 321 located above the air exchange section 33 have a higher density, which can accelerate the airflow speed above, thereby accelerating the heat exchange effect above. At the same time, the increased number of heat dissipation plates 321 can increase the heat dissipation area above, further increasing the heat exchange effect. During operation, hot air can rise naturally, accelerating the airflow speed above and thus enhancing the heat dissipation efficiency above. Simultaneously, the different airflow speeds above and below can create natural convection within the second radiator 3, further enhancing the heat dissipation effect inside the second radiator 3.
[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A wind turbine heat dissipation system, characterized in that: include: A first radiator (1) is installed inside the cabin, the first radiator (1) is provided with a first fin for circulating cooling liquid, and the liquid outlet end of the first fin is connected to the heat dissipation end of the internal component of the cabin; A fan (2) is installed on one side of the first radiator (1) and is used to transport air inside the cabin to the first fin; A second radiator (3) is installed outside the cabin, the second radiator (3) is provided with a second fin (31) for circulating cooling liquid, and the liquid outlet end of the second fin (31) is connected to the liquid inlet end of the first fin, and the liquid inlet end of the second fin (31) is connected to the heat dissipation end of the internal component of the cabin; A power device (4) is arranged between the first fin and the second fin (31) and is used to transport the cooling liquid inside the first fin to the inside of the second fin (31).
2. The wind turbine generator cooling system according to claim 1, characterized in that: A plurality of liquid infusion pipes (5) are connected to the liquid outlet end of the first fin, the plurality of liquid infusion pipes (5) are arranged in parallel with each other, and the liquid infusion pipes (5) are used to transport cooling liquid to a plurality of components inside the cabin.
3. The wind turbine generator cooling system according to claim 1, characterized in that: There are a plurality of second heat sinks (3), and the second fins (31) on the plurality of second heat sinks (3) are arranged in parallel with each other.
4. The wind turbine generator cooling system according to claim 3, characterized in that: A control valve (6) for adjusting the flow rate of the cooling liquid is installed at the liquid inlet end or the liquid outlet end of the second fin (31).
5. The wind turbine generator cooling system according to claim 1, characterized in that: A plurality of second fins (31) are arranged at intervals along the vertical direction on the second heat sink (3), a plurality of third fins (32) are abuttingly connected between two adjacent second fins (31), and a plurality of heat dissipation plates (321) are bent and arranged on the third fins (32) for accelerating the heat dissipation of the second fins (31).
6. The wind turbine generator heat dissipation system according to claim 5, characterized in that: Two adjacent heat sinks (321) form an air flow channel for air circulation, and the length direction of the second fin (31) is defined as a first direction. Along the first direction, the cross-sectional area of the air flow channels at both ends of the second heat sink (3) is smaller than the cross-sectional area of the air flow channel in the middle.
7. The wind turbine generator cooling system according to claim 6, characterized in that: Along the first direction, the gap between two adjacent heat dissipation plates (321) at both ends of the second heat dissipator (3) is smaller than the gap between two adjacent heat dissipation plates (321) located in the middle of the second heat dissipator (3).
8. The wind turbine generator cooling system according to claim 7, characterized in that: The middle portion of the second radiator (3) along the first direction is defined as an air exchange section (33), and the density of the heat dissipation plate (321) between two adjacent second fins (31) gradually increases from bottom to top.