A wind turbine generator cabin moisture-proof device

Abstract

The utility model relates to wind power generation equipment technical field, concretely is a kind of wind turbine generator unit cabin moisture-proof device, including connecting pipe and wind collecting shell, the quantity of wind collecting shell has two, two wind collecting shells are stacked and symmetrically arranged, and the end of lower wind collecting shell is equipped with fan for conveying external air to its inside in use state, the quantity of connecting pipe has multiple, multiple connecting pipes are all communicated with two wind collecting shells.The utility model is communicated with its communication by multiple connecting pipes being distributed on the outside of two wind collecting shells, so that the air conveyed by fan is distributed in lower wind collecting shell to multiple connecting pipes, and multiple connecting pipes are used to convey air, and by arranging heating pipe in the length direction of connecting pipe, the middle part of connecting pipe is formed as heating zone, the residence time of air in heating zone is increased, heat exchange is sufficient, and energy waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation equipment technology, specifically to a wind turbine nacelle moisture-proof device. Background Technology

[0002] The nacelle of a wind turbine is a critical part of the wind turbine. Located at the top of the wind turbine tower, it contains many important components and equipment. When the humidity inside the nacelle is too high, the moisture can cause corrosion and short circuits in the electrical equipment and metal parts, increasing the risk of failure. Therefore, it is necessary to carry out moisture-proof treatment.

[0003] Chinese patent document CN219281886U discloses a wind turbine nacelle moisture-proof device, including a nacelle shell, a control component, a lower ventilation component, and an upper ventilation component. A yaw cover is connected to the lower end of the nacelle shell; this yaw cover is similar to the yaw cover commonly found in wind turbine nacelles. The lower ventilation component is mounted on the yaw cover, and the upper ventilation component is mounted on the upper end of the nacelle shell. The lower ventilation component includes a heater and a fan for introducing hot air into the nacelle shell, and the upper ventilation component includes a fan for expelling gas from inside the nacelle shell to the outside. The control component uses electric control to control the opening and closing of both the lower and upper ventilation components. The lower and upper ventilation components are linked, so that when the lower ventilation component introduces hot air into the nacelle shell, the upper ventilation component expels gas from inside the nacelle shell to the outside.

[0004] In the above scheme, the spiral heating wire is parallel to the fan assembly, which makes the process of air flowing through the heating wire a transient heat exchange. The contact time between the flowing air and the heating wire is too short, resulting in low heat exchange efficiency. In order to achieve the required outlet air temperature, the heater needs to operate at a higher power to compensate for heat loss, which creates power redundancy and leads to high energy consumption of the equipment, thus causing unnecessary energy waste. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a moisture-proof device for wind turbine nacelles.

[0006] The technical solution of this utility model is as follows: A wind turbine nacelle moisture-proof device includes connecting pipes and air collecting shells. There are two air collecting shells, which are stacked vertically and arranged symmetrically. A fan for conveying external air to its inner side during use is installed at the end of the lower air collecting shell. There are multiple connecting pipes, which are all connected to the two air collecting shells. A heating pipe for heating the air conveyed by the connecting pipe during use is provided on the inner side of the connecting pipe along its length.

[0007] Preferably, both ends of the connecting pipe are bent, and both ends of the connecting pipe are provided with guide shells that are connected to the air collecting shell. The inner diameter of the guide shells gradually decreases from the air collecting shell toward the connecting pipe.

[0008] Preferably, mounting shells are provided on both sides of the bottom end of the lower air collecting shell, and sliding grooves are provided on both inner walls of the mounting shells. The edge of the fan is located inside the sliding groove of the mounting shell and is connected to the mounting shell by bolts.

[0009] Preferably, the inner side of the upper air collecting shell is provided with multiple guide plates, which are inclined and arranged in a ring array.

[0010] Preferably, a cover plate is provided on one side of the middle section of the connecting pipe, the cover plate is bolted to the connecting pipe, and a heat insulation plate is provided on the side of the cover plate located inside the connecting pipe, the heat insulation plate being connected to the heating pipe.

[0011] Preferably, the inner side of the connecting pipe is provided with fins, and the fins are connected to the heating pipe and the heat insulation plate.

[0012] Preferably, a filter cartridge is provided on the inner side of the lower air collecting shell, and a fixing plate is provided at the end of the filter cartridge to be connected to the air collecting shell.

[0013] Preferably, a screw is provided at the top inner side of the lower air collecting shell, and an internally threaded tube is provided in the middle of the fixing plate. The internally threaded tube is sleeved on the outside of the screw and threadedly connected to it.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This invention uses multiple connecting pipes evenly distributed on the outside of two air collecting shells to connect with them, so that the air delivered by the fan is distributed in the lower air collecting shell to the multiple connecting pipes, and the multiple connecting pipes deliver air. At the same time, heating pipes are arranged on the inside of the connecting pipes along their length, forming a heating zone in the middle of the connecting pipes, increasing the residence time of air in the heating zone, ensuring sufficient heat exchange, and reducing energy waste. Attached Figure Description

[0015] Figure 1-2 All are perspective views of one embodiment of the present utility model; Figure 3 This is a cross-sectional schematic diagram of the connecting pipe and the air collecting shell structure in one embodiment of the present invention; Reference numerals in the attached drawings: 1. Fan; 2. Mounting housing; 3. Guide housing; 4. Connecting pipe; 5. Cover plate; 6. Air collecting housing; 7. Guide plate; 8. Fin; 9. Heat insulation plate; 10. Heating tube; 11. Filter cartridge; 12. Screw; 13. Internally threaded pipe; 14. Fixing plate. Detailed Implementation

[0016] Example 1, as Figure 1-3As shown, the present invention proposes a wind turbine nacelle moisture-proof device, including connecting pipes 4 and air collecting shells 6. There are two air collecting shells 6, which are stacked vertically and symmetrically arranged. A fan 1 is installed at the end of the lower air collecting shell 6 for conveying external air to its inner side during use. There are multiple connecting pipes 4, which are evenly distributed around the two air collecting shells 6 and communicate with them. A heating pipe 10 is provided on the inner side of the connecting pipe 4 along its length for heating the air conveyed by the connecting pipe 4 during use. The heating pipe 10 has a certain length on the inner side of the connecting pipe 4, forming a long heating zone on the inner side of the connecting pipe 4. The heating pipe 10 is spiral-shaped, and the heating pipes 10 in the multiple connecting pipes 4 are connected in parallel, so that if one is damaged, the others can still be used. In addition, the heating pipe 10 is also equipped with an overheat protection device (such as a thermal fuse or temperature controller) to ensure that the power supply to the heater can be cut off immediately when the fan 1 fails and stops, resulting in no airflow.

[0017] In an optional embodiment, the two ends of the connecting pipe 4 are bent, and both ends of the connecting pipe 4 are provided with a guide shell 3 connected to the air collecting shell 6. The inner diameter of the guide shell 3 gradually decreases from the air collecting shell 6 toward the connecting pipe 4, so that the air delivered by the fan 1 to the inside of the air collecting shell 6 can move smoothly into the connecting pipe 4, so that the air in one air collecting shell 6 can be delivered to the other air collecting shell 6 through the connecting pipe 4.

[0018] In an optional embodiment, mounting shells 2 are provided on both sides of the bottom end of the lower air collecting shell 6. The inner walls of the mounting shell 2 are provided with sliding grooves. The edge of the fan 1 is located inside the sliding groove of the mounting shell 2 and is connected to the mounting shell 2 by bolts. The size of the sliding groove of the mounting shell 2 is larger than the size of the edge of the fan 1, so that the fan 1 can be smoothly slidably installed in the sliding groove of the mounting shell 2, and the fan 1 can have an upward gap inside the sliding groove of the mounting shell 2. At the same time, the bolts pass through the mounting shell 2 from the top and are threadedly connected to the fan 1. Through the action of the threads, the fan 1 is moved upward inside the sliding groove of the mounting shell 2, and the top of the fan 1 is fitted and connected to the inner top of the mounting shell 2, thereby improving the sealing of the connection between the fan 1 and the air collecting shell 6.

[0019] In an optional embodiment, the inner side of the upper air collecting shell 6 is provided with a plurality of guide plates 7. The plurality of guide plates 7 are inclined and arranged in a ring array to change the flow direction of hot air when the connecting pipe 4 delivers hot air to its inner side, so that the air discharged from the plurality of connecting pipes 4 can be mixed inside the air collecting shell 6, thereby improving the thermal stability of the air.

[0020] In this embodiment, two air collecting shells 6 are stacked vertically and symmetrically arranged, with the upper air collecting shell 6 opening upwards and the lower air collecting shell 6 opening downwards. A fan 1 is installed at the opening of the lower air collecting shell 6 via a mounting shell 2. The fan 1, when activated, transports outside air to the inside of the lower air collecting shell 6. Multiple connecting pipes 4 are evenly distributed on the outside of the two air collecting shells 6 and communicate with them, allowing air to be transported from the inside of the lower air collecting shell 6 to the multiple connecting pipes 4, and then transported to the inside of the upper air collecting shell 6 via the multiple connecting pipes 4. During the transport process via the connecting pipes 4, the heating pipe 10 inside the connecting pipe 4 heats the inside of the connecting pipe 4. Air is heated, and the heating pipe 10 is arranged along the length of the connecting pipe 4, forming a long heating zone in the middle of the connecting pipe 4. This increases the contact time between the heating pipe 10 and the air inside the connecting pipe 4, stably heating the air inside the connecting pipe 4. As a result, the air delivered to the inside of the upper air collector 6 through the connecting pipe 4 is hot air, and the upper air collector 6 delivers the hot air to the inside of the wind turbine nacelle for moisture protection. This avoids situations where the air temperature cannot reach the preset level or where a higher power heating pipe 10 is needed to heat the air, improving the moisture protection effect and avoiding energy waste.

[0021] Example 2, as Figure 1-2 As shown, the wind turbine nacelle moisture-proof device proposed in this utility model differs from Embodiment 1 in that a cover plate 5 is provided on one side of the middle part of the connecting pipe 4, the cover plate 5 is bolted to the connecting pipe 4, and a heat insulation plate 9 is provided on the side of the cover plate 5 located inside the connecting pipe 4, the heat insulation plate 9 is connected to the heating pipe 10.

[0022] In an optional embodiment, the inner side of the connecting pipe 4 is provided with fins 8, which are connected to the heating pipe 10 and the heat insulation plate 9. The fins 8 are used to conduct heat from the heating pipe 10 through the heating pipe 10 during use, thereby increasing the heating area of ​​the heating pipe 10 inside the connecting pipe 4 and improving the heating efficiency of the air passing through the connecting pipe 4.

[0023] In this embodiment, the cover plate 5 is bolted to the connecting pipe 4, and the fins 8 and heating pipe 10 are connected to the cover plate 5 through the heat insulation plate 9, so that the fins 8 and heating pipe 10 are detachably connected to the connecting pipe 4 through the cover plate 5, thereby making the inspection and maintenance of the heating pipe 10 and fins 8 more convenient.

[0024] Example 3, as Figure 1-2As shown, the present invention proposes a wind turbine nacelle moisture-proof device. Compared with embodiment one, this embodiment differs in that the inner side of the lower air collecting shell 6 is provided with a filter cylinder 11, and the end of the filter cylinder 11 is provided with a fixing plate 14 connected to the air collecting shell 6. The filter cylinder has a sturdy frame support and is composed of pleated filter material. Under the same volume, the filtration area is larger than that of a flat plate filter, which can hold more dust and extend the replacement cycle. The inner top of the lower air collecting shell 6 is provided with a screw 12, and the middle of the fixing plate 14 is provided with an internal threaded tube 13. The internal threaded tube 13 is sleeved on the outside of the screw 12 and threadedly connected to it. In use, the filter cylinder 11 can also be removed so that the fan 1 can directly deliver air to the connecting pipe 4.

[0025] In this embodiment, the filter cartridge 11 is installed inside the lower air collection shell 6 by the cooperation of the screw 12 and the internal threaded tube 13, and the air delivered by the fan 1 enters the inside of the filter cartridge 11 and is discharged into the air collection shell 6. This allows the filter cartridge 11 to filter the dust in the air inside the air collection shell 6, reducing the damage of dust to the wind turbine equipment. In order to avoid obstruction of the air delivered by the fan 1, the filter cartridge 11 can be arranged at the air inlet of the fan 1 for filtration, or the filter cartridge 11 can be directly removed from use depending on the environmental conditions.

[0026] In this invention, the fan 1 is installed at the opening of the lower air collecting shell 6 via the mounting shell 2. The fan 1, when activated, transports outside air to the inside of the lower air collecting shell 6. Simultaneously, the filter cartridge 11 is installed inside the lower air collecting shell 6 via the cooperation of the screw 12 and the internally threaded pipe 13. The air transported by the fan 1 moves through the filter cartridge 11, which filters dust from the air. The air is then distributed and transported to multiple connecting pipes 4 inside the lower air collecting shell 6, and these connecting pipes simultaneously transport the air to the inside of the upper air collecting shell 6. Meanwhile, heating pipes 10 are arranged along the length of the connecting pipes 4 inside their respective sections, forming a relatively long heating zone in the middle of each connecting pipe 4. This allows the air inside the connecting pipes to be heated. The increased residence time in the heating zone allows for stable heating of the air inside the connecting pipe 4, resulting in hot air being delivered to the upper air collector 6. The upper air collector 6 then delivers this hot air to the inside of the wind turbine nacelle for moisture protection. This also prevents situations where the air temperature fails to reach the preset level or where a higher-power heating element 10 is required to heat the air, improving the moisture protection effect and avoiding energy waste. The cover plate 5 is bolted to the connecting pipe 4, and the heat insulation plate 9 connects the fins 8 and the heating element 10 to the cover plate 5, making the fins 8 and the heating element 10 detachably connected to the connecting pipe 4. This facilitates the inspection and maintenance of the heating element 10 and the fins 8.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A moisture barrier for a nacelle of a wind turbine generator, comprising: Includes connecting pipe (4) and air collection shell (6); There are two air collection shells (6), which are stacked on top of each other and arranged symmetrically. The lower air collection shell (6) is equipped with a fan (1) for conveying external air to its inside when in use. There are multiple connecting pipes (4), and all of the multiple connecting pipes (4) are connected to two air collection shells (6). The inner side of the connecting pipe (4) is provided with a heating pipe (10) along its length for heating the air transported by the connecting pipe (4) in use.

2. The wind turbine nacelle moisture-proof device according to claim 1, characterized in that, The two ends of the connecting pipe (4) are bent. Both ends of the connecting pipe (4) are provided with a guide shell (3) connected to the air collecting shell (6). The inner diameter of the guide shell (3) gradually decreases from the air collecting shell (6) toward the connecting pipe (4).

3. A moisture barrier for a nacelle of a wind turbine generator according to claim 1, wherein The bottom of the lower air collecting shell (6) is provided with mounting shells (2) on both sides. The inner walls of the mounting shell (2) are provided with sliding grooves. The edge of the fan (1) is located inside the sliding groove of the mounting shell (2) and is connected to the mounting shell (2) by bolts.

4. A moisture barrier for a nacelle of a wind turbine generator according to claim 1, wherein The upper air collecting shell (6) has multiple guide plates (7) on its inner side, which are arranged in an inclined and circular array.

5. A moisture barrier for a nacelle of a wind turbine generator according to claim 1, wherein A cover plate (5) is provided on one side of the middle part of the connecting pipe (4). The cover plate (5) is bolted to the connecting pipe (4). A heat insulation plate (9) is provided on the side of the cover plate (5) inside the connecting pipe (4). The heat insulation plate (9) is connected to the heating pipe (10).

6. A moisture barrier for a nacelle of a wind turbine generator according to claim 5, wherein Fins (8) are provided on the inner side of the connecting pipe (4), and the fins (8) are connected to the heating pipe (10) and the heat insulation plate (9).

7. A moisture barrier for a nacelle of a wind turbine generator according to claim 1, wherein The lower air collecting shell (6) has a filter cylinder (11) on its inner side, and the end of the filter cylinder (11) has a fixing plate (14) connected to the air collecting shell (6).

8. A moisture barrier for a nacelle of a wind turbine generator according to claim 7, wherein A screw (12) is provided at the top inner side of the lower air collecting shell (6), and an internal threaded tube (13) is provided in the middle of the fixing plate (14). The internal threaded tube (13) is sleeved on the outside of the screw (12) and threadedly connected to it.

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