Heat dissipation device for wind power tower drum

Abstract

A heat dissipation device for a wind power tower relates to the technical field of wind power generation and comprises an air cooling heat exchange device, a heat exchanger, a rotary transition device and a fan. The air-cooled heat exchange device is located at the top of the wind turbine generator, conducts heat exchange through natural wind and comprises a mounting frame, a water outlet pipe, a water return pipe, an S-shaped heat exchange pipe, cooling fins and the like, a heat insulation plate is arranged at the top of the mounting frame, and a protective net is arranged around the mounting frame. The heat exchanger is arranged in the tower drum base and is communicated with the air-cooled heat exchange device through a pipeline, and a circulating pump is arranged on the pipeline; the rotary transition device enables the pipeline to rotate relatively and comprises a fixing base, a ring sleeve, a water outlet connector and other components. The fan carries out air-cooling heat dissipation on the electrical equipment in the base; the ventilation hole in the tower drum access door is matched with an exhaust fan to exhaust air; the structure is simple, natural wind resources at the top are utilized, no extra cooling fan is needed, and the running cost of a cooling system is reduced; and the problem of pipeline connection between the heat exchanger and the air-cooled heat exchange device when the wind turbine generator rotates is solved.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a heat dissipation device for wind turbine towers. Background Technology

[0002] As is well known, the electrical equipment inside the wind turbine tower base generates a large amount of heat during wind turbine operation. If this heat cannot be dissipated in time, it will lead to reduced operating efficiency, shortened service life, and even malfunctions and shutdowns. Existing heat dissipation methods often suffer from high energy consumption, poor heat dissipation effect, or complex structure.

[0003] In summary, there is an urgent need in the field of wind turbine tower heat dissipation for a heat dissipation device that can efficiently utilize natural wind, adapt to the rotation of wind turbine units, and has a stable structure. This would solve the problems of poor heat dissipation, high energy consumption, and low operational reliability in existing technologies, improve the operating efficiency and service life of electrical equipment inside wind turbine towers, and meet the ever-growing needs of the wind power industry. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a wind turbine tower heat dissipation device.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A wind turbine tower heat dissipation device, comprising:

[0007] The air-cooled heat exchanger is installed on the top of the wind turbine and exchanges heat with the natural wind at the top of the wind turbine.

[0008] The heat exchanger is installed inside the wind turbine tower base and is connected to the air-cooled heat exchange device through a pipeline, on which a circulating pump is installed.

[0009] A rotary transition device is installed at the corresponding connection position between the wind turbine tower and the wind turbine, and is used to enable the pipes between the heat exchanger and the air-cooled heat exchange device to rotate relative to each other.

[0010] The fan, installed on the heat exchanger, is used to cool the electrical equipment inside the wind turbine tower base.

[0011] Preferably, the air-cooled heat exchanger comprises:

[0012] The mounting bracket is securely connected to the top of the wind turbine unit.

[0013] The water outlet pipe is installed on one side of the mounting bracket;

[0014] The return water pipe is installed on the other side of the mounting bracket;

[0015] Multiple heat exchange tubes are suspended and installed in the mounting frame; the heat exchange tubes have an S-shaped structure, and the two ends of the multiple heat exchange tubes are connected in series and respectively connected to the outlet water pipe and the return water pipe.

[0016] Multiple heat dissipation fins are installed at intervals on the heat exchange tubes.

[0017] Preferably, the mounting bracket is provided with a heat insulation plate on top.

[0018] Preferably, the mounting bracket is provided with a fixing plate, the heat exchange tube passes through the fixing plate and is correspondingly and securely connected to the fixing plate.

[0019] Preferably, the rotary transition device comprises:

[0020] The mounting base is securely connected to the inner wall of the wind turbine tower.

[0021] Two rings are rotatably connected to the fixed base on the same axis, and the two rings are spaced apart; the inner ring surface of the ring is open, and sealing rings are provided between the two end faces and the fixed base;

[0022] The water outlet connector has one end connected to the water outlet pipe via a corresponding pipe, and the other end connected to one of the corresponding rings.

[0023] The return water connector has one end connected to the return water pipe via a corresponding pipe, and the other end connected to another ring;

[0024] The first pipe joint has one end connected to the inlet port of the heat exchanger via a pipe, and the other end passes through the fixed seat and is connected to the ring with the outlet connector.

[0025] The second pipe connector has one end connected to the outlet port of the heat exchanger via a pipe, and the other end connected to the ring with the return water connector after passing through the fixed seat.

[0026] Preferably, the maintenance door of the wind turbine tower is provided with a ventilation hole, and an exhaust fan for exhausting air from inside the wind turbine tower is installed at the position of the ventilation hole.

[0027] Preferably, the mounting frame is equipped with protective netting on all four sides.

[0028] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0029] (1) The present invention has a simple structure. The wind-cooled heat exchange device makes full use of the abundant natural wind resources at the top of the wind turbine tower to achieve natural cooling of the cooling medium. There is no need to install an additional cooling fan, which effectively saves energy and reduces the operating cost of the entire heat dissipation system.

[0030] (2) This utility model further adopts an S-shaped structure design for the heat exchange tube and installs multiple heat dissipation fins at intervals, which greatly increases the heat exchange area, enabling the cooling medium to transfer heat to the surrounding air more quickly and improving the heat exchange efficiency. At the same time, the suspended setting of the heat exchange tube ensures that it can fully and well exchange heat with the natural wind, making the maximum use of natural wind energy resources.

[0031] (3) This utility model further adds a heat insulation plate to the top of the mounting frame, which can effectively block direct sunlight, prevent the heat exchange tube from rising in temperature due to solar radiation, avoid unnecessary heat interference, and ensure the high efficiency of the heat exchange process. A fixing plate is set inside the mounting frame, through which the heat exchange tube passes and is securely connected to the fixing plate, which enhances the structural stability of the heat exchange tube and extends the service life of the entire device. The mounting frame is equipped with a protective net around it, which can block foreign objects from entering, protect the normal heat exchange function of the heat exchange tube, prevent foreign objects from blocking the airflow channels between the heat exchange tubes or damaging the heat exchange tubes, and ensure the stable operation of the entire air-cooled heat exchange device.

[0032] (4) The setting of the rotary transition device of this utility model solves the problem of the connection between the heat exchanger and the air-cooled heat exchange device when the wind turbine is rotating, so that the pipe between the two can still maintain normal operation when the wind turbine is rotating, ensuring that the circulation and heat dissipation function of the cooling medium is not affected, maintaining the stability and reliability of the entire heat dissipation system, and realizing the stable heat dissipation of the wind turbine under different wind directions. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the installation structure of this utility model;

[0034] Figure 2 A three-dimensional structural diagram of an air-cooled heat exchanger;

[0035] Figure 3 This is a schematic diagram of the air-cooled heat exchanger.

[0036] Figure 4 This is a schematic diagram of the heat exchanger structure;

[0037] Figure 5 This is a schematic diagram of the rotary transition device.

[0038] Figure 6 This is a cross-sectional view of the rotary transition device.

[0039] In the diagram: 1. Air-cooled heat exchanger; 1-1. Mounting bracket; 1-2. Outlet pipe; 1-3. Return pipe; 1-4. Heat exchange tube; 1-5. Heat dissipation fins; 1-6. Insulation plate; 1-7. Fixing plate; 2. Heat exchanger; 3. Rotary transition device; 3-1. Fixing base; 3-2. Ring; 3-3. Outlet connector; 3-4. Return connector; 3-5. First pipe connector; 3-6. Second pipe connector; 4. Fan. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0041] In the description of this utility model, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 application according to the specific circumstances. Example

[0043] Combined with appendix Figures 1-6 A wind turbine tower cooling device includes an air-cooled heat exchanger 1, a heat exchanger 2, a rotary transition device 3, and a fan 4. The air-cooled heat exchanger 1 is a key component installed on the top of the wind turbine, its core function being efficient heat exchange with the natural wind at that location. Given that wind turbine towers are typically over 60 meters high, the wind resources at their top are abundant, providing sufficient natural wind for the air-cooled heat exchanger 1. This allows it to fully utilize natural wind to naturally cool the internal cooling medium, eliminating the need for an additional cooling fan, achieving effective energy savings, and reducing the overall operating cost of the cooling system.

[0044] Specifically, as shown in the appendix Figure 2 and 3 As shown, the components of the air-cooled heat exchanger 1 include a mounting frame 1-1 and multiple heat exchange tubes 1-4. The mounting frame 1-1 serves as the basic support structure for the entire air-cooled heat exchanger 1, and is securely connected to the top of the wind turbine through a fastening connection. Inside its internal space, multiple heat exchange tubes 1-4 are installed in series in a suspended manner, a design that fully considers wind direction and heat exchange efficiency. These heat exchange tubes 1-4 adopt an S-shaped structure design. The two ends of the series-connected heat exchange tube 1-4 assembly are connected to the outlet water pipe 1-2 and the return water pipe 1-3, respectively. The outlet water pipe 1-2 and the return water pipe 1-3 are fixedly connected to the mounting frame 1-1, forming a complete cooling medium circulation loop. To significantly enhance heat exchange efficiency, multiple heat dissipation fins 1-5 are installed at intervals on the surface of the heat exchange tubes 1-4. These heat dissipation fins 1-5 increase the heat exchange area, allowing the cooling medium to transfer heat to the surrounding air more quickly, thereby achieving efficient heat exchange. Meanwhile, the suspended arrangement of heat exchange tubes 1-4 ensures that they can have sufficient and good heat exchange with the natural wind at the top of the wind turbine, making the most of natural wind energy resources.

[0045] Furthermore, a heat insulation plate 1-6 is added to the top of the mounting frame 1-1. This heat insulation plate 1-6 effectively blocks direct sunlight, preventing the heat exchange tubes 1-4 from overheating due to solar radiation, thus avoiding unnecessary heat interference and ensuring the high efficiency of the heat exchange process. Secondly, a fixing plate 1-7 is installed inside the mounting frame 1-1, through which the heat exchange tubes 1-4 pass and are securely connected. This structural design not only enhances the structural stability of the heat exchange tubes 1-4 but also ensures that the heat exchange tubes 1-4 will not be damaged by vibration or other external forces during long-term operation, extending the service life of the entire device. Moreover, a protective net is provided around the mounting frame 1-1 to prevent foreign objects from entering, protecting the normal heat exchange function of the heat exchange tubes 1-4, preventing foreign objects from blocking the airflow channels between the heat exchange tubes 1-4 or damaging the heat exchange tubes 1-4, and ensuring the stable operation of the entire air-cooled heat exchange device 1.

[0046] Heat exchanger 2 is another important component installed inside the wind turbine tower base and connected to the air-cooled heat exchange device 1 via pipes. Fan 4 is mounted on heat exchanger 2, and its main function is to provide air-cooled heat dissipation for the electrical equipment inside the wind turbine tower base. Because the cooling medium in heat exchanger 2 has undergone pre-cooling treatment by the air-cooled heat exchange device 1, the cold air blown out by fan 4 significantly improves the cooling effect on the electrical equipment inside the base, effectively protecting the equipment and ensuring it operates within a suitable temperature range, thus improving its operating efficiency and service life. It is worth noting that the piping system between heat exchanger 2 and air-cooled heat exchange device 1 is equipped with a circulating pump to ensure continuous circulation of the cooling medium between the two, maintaining the normal operation of the entire heat dissipation system and achieving efficient heat transfer.

[0047] During wind power generation, the wind turbine and the wind turbine tower rotate relative to each other to adapt to changes in wind direction. This means that the pipes between heat exchanger 2 and the air-cooled heat exchange device 1 cannot be fixedly connected, otherwise the pipes would twist and be damaged, affecting the normal operation of the entire heat dissipation system. To solve this technical problem, this embodiment installs a rotation transition device 3 at the connection between the wind turbine tower and the wind turbine. The key function of this device is to ensure that the pipes between heat exchanger 2 and the air-cooled heat exchange device 1 can maintain normal operation even when the wind turbine rotates, ensuring that the circulating heat dissipation function of the cooling medium is not affected, and maintaining the stability and reliability of the entire heat dissipation system.

[0048] Specifically, the rotary transition device 3 consists of a fixed base 3-1 and two coaxially rotatably connected rings 3-2, as shown in the attached figure. Figure 5 and 6 As shown, the fixed base 3-1 is firmly connected to the inner wall of the wind turbine tower with fasteners, ensuring the stability and reliability of the entire rotating transition device 3. The two rings 3-2 are spaced apart to avoid direct heat exchange between the outlet and return water, thus ensuring the heat exchange effect of the cooling medium. The inner ring surface of the ring 3-2 remains open, and sealing rings are fitted between its two end faces and the fixed base 3-1, ensuring that the ring 3-2 can rotate flexibly relative to the fixed base 3-1 while preventing leakage of the internal cooling medium, thus ensuring the sealing and safety of the entire heat dissipation system.

[0049] One of the rings 3-2 connects to the outlet connector 3-3, one end of which is precisely connected to the outlet pipe 1-2 via a specially designed pipe; the other ring 3-2 connects to the return connector 3-4, one end of which is reliably connected to the return pipe 1-3 via a pipe. In addition, the rotary transition device 3 also includes a first pipe connector 3-5 and a second pipe connector 3-6. One end of the first pipe connector 3-5 is tightly connected to the inlet port of the heat exchanger 2 via a pipe, and the other end passes through the fixed base 3-1 and connects to the ring 3-2 connecting to the outlet connector 3-3; one end of the second pipe connector 3-6 is connected to the outlet port of the heat exchanger 2 via a pipe, and the other end passes through the fixed base 3-1 and connects to the ring 3-2 connecting to the return connector 3-4.

[0050] When the wind turbine turns, it will drive the two rings 3-2 to rotate. However, the rotating transition device 3 can still maintain the normal connection performance of the pipe between the heat exchanger 2 and the air-cooled heat exchange device 1, and ensure that the circulation and heat dissipation function of the cooling medium is not affected. This achieves stable heat dissipation of the wind turbine under different wind directions, ensuring the efficient operation and long-term reliability of the entire wind turbine tower heat dissipation device. Example

[0051] This embodiment further optimizes and improves upon the structure of Embodiment 1. Specifically, ventilation holes are opened at the maintenance doors of the wind turbine tower, and exhaust fans are installed at the corresponding locations. The main function of the exhaust fans is to expel hot air from the wind turbine tower base while simultaneously promoting the flow of cool air from the wind turbine's ventilation holes into the wind turbine tower, forming an effective airflow circulation. This airflow design further enhances the overall heat dissipation effect inside the wind turbine tower, improving the efficiency and reliability of the entire heat dissipation device. The auxiliary heat dissipation role of the exhaust fans is particularly important when the electrical equipment inside the wind turbine tower has a large load and generates a high amount of heat.

[0052] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents within this utility model.

Claims

1. A wind turbine tower heat dissipation device, characterized in that, include: The air-cooled heat exchange device (1) is installed on the top of the wind turbine and exchanges heat with the natural wind at the top of the wind turbine. The heat exchanger (2) is installed inside the wind turbine tower base and is connected to the air-cooled heat exchange device (1) through a pipeline. A circulating pump is installed on the pipeline. Rotary transition device (3) is installed at the corresponding connection position between the wind turbine tower and the wind turbine unit, and is used to enable the pipe between the heat exchanger (2) and the air-cooled heat exchange device (1) to rotate relative to each other; The fan (4) is installed on the heat exchanger (2) and is used to cool the electrical equipment inside the wind turbine tower base.

2. The wind turbine tower heat dissipation device as described in claim 1, characterized in that, The air-cooled heat exchange device (1) includes: Mounting bracket (1-1) is fastened to the top of the wind turbine unit; The water outlet pipe (1-2) is installed on one side of the mounting bracket (1-1); The return water pipe (1-3) is installed on the other side of the mounting bracket (1-1); Multiple heat exchange tubes (1-4) are suspended and installed in the mounting bracket (1-1); the heat exchange tubes (1-4) have an S-shaped structure, and the multiple heat exchange tubes (1-4) are connected in series and their two ends are respectively connected to the outlet water pipe (1-2) and the return water pipe (1-3); Multiple heat dissipation fins (1-5) are installed at intervals on the heat exchange tubes (1-4).

3. The wind turbine tower heat dissipation device as described in claim 2, characterized in that: The mounting bracket (1-1) is provided with a heat insulation plate (1-6) on top.

4. The wind turbine tower heat dissipation device as described in claim 2, characterized in that: The mounting bracket (1-1) is provided with a fixing plate (1-7), and the heat exchange tube (1-4) passes through the fixing plate (1-7) and is correspondingly and securely connected to the fixing plate (1-7).

5. The wind turbine tower heat dissipation device as described in any one of claims 2 to 4, characterized in that, The rotary transition device (3) comprises: The mounting base (3-1) is securely connected to the inner wall of the wind turbine tower. Two ring sleeves (3-2) are rotatably connected to the fixed base (3-1) on the same axis, and the two ring sleeves (3-2) are spaced apart; the inner ring surface of the ring sleeve (3-2) is open, and a sealing ring is provided between the two end faces and the fixed base (3-1); The water outlet connector (3-3) has one end connected to the water outlet pipe (1-2) via a corresponding pipe, and the other end connected to one of the rings (3-2); The return water connector (3-4) has one end connected to the return water pipe (1-3) via a corresponding pipe, and the other end connected to another ring (3-2); The first pipe joint (3-5) has one end connected to the water inlet port of the heat exchanger (2) through a pipe, and the other end passes through the fixed seat (3-1) and is connected to the ring (3-2) with the water outlet joint (3-3). The second pipe joint (3-6) has one end connected to the outlet port of the heat exchanger (2) via a pipe, and the other end passes through the fixed seat (3-1) and is connected to the ring (3-2) connected to the return water joint (3-4).

6. The wind turbine tower heat dissipation device as described in claim 1, characterized in that: The maintenance door of the wind turbine tower is provided with ventilation holes, and an exhaust fan is installed at the corresponding position of the ventilation hole to exhaust the air inside the wind turbine tower.

7. The wind turbine tower heat dissipation device as described in claim 2, characterized in that: The mounting bracket (1-1) is equipped with protective netting on all four sides.

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