A wind turbine nacelle bottom sealing structure

Abstract

This utility model provides a bottom sealing structure for a wind turbine nacelle, including a nacelle, a transport base, and a sealing plate. The bottom of the nacelle has an opening; the top of the transport base extends into the nacelle from the opening, and the nacelle is supported on the top of the transport base. The sealing plate includes an annular main body, a first annular sealing part, and a second annular sealing part. The annular main body is fitted onto the bottom of the transport base. The first annular sealing part seals between the end of the annular main body near the transport base and the transport base, and the second annular sealing part seals between the end of the annular main body away from the transport base and the nacelle. The sealing plate of this wind turbine nacelle bottom sealing structure is located at the opening at the bottom of the nacelle. The sealing plate is sealed to the transport base via the first annular sealing part, and sealed to the nacelle via the second annular sealing part, thereby sealing the gap between the nacelle and the transport base.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation equipment technology, and in particular to a sealing structure at the bottom of a wind turbine nacelle. Background Technology

[0002] When transporting wind turbine nacelles on deck barges, seawater occasionally splashes onto the deck. If seawater seeps in from the bottom of the nacelle, it not only pollutes the internal environment but also accelerates the corrosion of structural components in the yaw area, potentially leading to failure. Therefore, structural seals must be installed in the yaw area at the bottom of the nacelle to ensure a tight seal and prevent seawater intrusion. Utility Model Content

[0003] The purpose of this utility model is to provide a sealing structure at the bottom of the wind turbine nacelle, which aims to ensure the sealing of the yaw area of ​​the wind turbine nacelle during transportation.

[0004] To solve the above-mentioned technical problems, the present invention provides a bottom sealing structure for a wind turbine nacelle, comprising:

[0005] The cabin has an opening at its bottom;

[0006] A transport base, the bottom of which is located outside the cabin, and the top of which extends into the cabin from the opening, with the cabin supported on the top of the transport base;

[0007] A sealing plate, comprising an annular main body, a first annular sealing part, and a second annular sealing part, wherein the annular main body is sleeved on the bottom of the transport base and disposed on the cabin or the transport base, the first annular sealing part seals between the end of the annular main body near the transport base and the transport base, and the second annular sealing part seals between the end of the annular main body away from the transport base and the cabin.

[0008] In some embodiments, the annular body portion is a rigid sealing plate.

[0009] In some embodiments, the annular main body is a plastic plate, a wooden plate, or a metal plate.

[0010] In some embodiments, the annular main body is located on the lower side of the cabin, the second annular sealing portion is sandwiched between the bottom surface of the cabin and the annular main body, and the second annular sealing portion is disposed around the opening on the side away from the transport base.

[0011] In some embodiments, the annular main body is mounted on the cabin by screws.

[0012] In some embodiments, the annular body portion and the second annular sealing portion are provided with a first through hole and a second through hole for the screw to pass through, and the first through hole and the second through hole are provided in a plurality of spaced intervals along the circumference of the annular body portion.

[0013] In some embodiments, a locking protrusion is provided at one end of the annular main body near the transport base, and the locking protrusion engages with a locking slot on the transport base.

[0014] In some embodiments, the annular main body has a clearance notch at one end near the transport base, and the ribs on the transport base pass through the annular main body from the clearance notch.

[0015] In some embodiments, the annular main body includes a plurality of arc-shaped splicing parts, and the annular main body is formed by splicing the plurality of arc-shaped splicing parts along the circumference of the annular main body.

[0016] In some embodiments, the arc-shaped splicing portion is folded at both ends of the annular main body in the circumferential direction away from the nacelle to form two mating flange portions, and two adjacent arc-shaped splicing portions are spliced ​​together through the mating flange portions.

[0017] In some embodiments, the end of the annular main body near the transport base is vertically opposite the opening.

[0018] In some embodiments, the second annular sealing portion is adhered to the surface of the annular body portion near the cabin.

[0019] In some embodiments, the second annular sealing portion is a sealing gasket.

[0020] In some embodiments, the first annular sealing portion is provided with a first sealing lip and a second sealing lip at one end near the transport base, and the first sealing lip and the second sealing lip are gradually opened in the direction near the transport base.

[0021] In some embodiments, a slot is provided at the end of the first annular sealing portion away from the transport base, and the slot engages with the end of the annular main body portion near the transport base.

[0022] In some embodiments, the first annular sealing portion is a sealing ring.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The sealing plate of the bottom sealing structure of the wind turbine nacelle of this utility model is set at the opening at the bottom of the nacelle. The sealing plate is sealed to the transport base through a first annular sealing part, and the sealing plate is sealed to the nacelle through a second annular sealing part, thereby sealing the gap between the nacelle and the transport base through the sealing plate. Attached Figure Description

[0025] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0026] Figure 1 This is a schematic diagram of the bottom sealing structure of the wind turbine nacelle in an embodiment of this utility model;

[0027] Figure 2 for Figure 1 A structural schematic diagram of the components of the mid-cabin and transport base;

[0028] Figure 3 for Figure 2 Enlarged view of the components of the mid-cabin and transport base;

[0029] Figure 4 for Figure 1 A structural diagram of the connection between the middle cabin and the sealing plate;

[0030] Figure 5 for Figure 1 A schematic diagram of the connection between the transport base and the sealing plate;

[0031] Figure 6 for Figure 1 Schematic diagram of the middle sealing plate;

[0032] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure of the middle sealing plate;

[0033] Figure 8 for Figure 6 A schematic diagram of the structure of the arc-shaped splice section.

[0034] Explanation of reference numerals in the accompanying drawings of this utility model:

[0035] Wind turbine nacelle bottom sealing structure 100, nacelle 1, opening 11, transport base 2, bayonet 21, rib 22, sealing plate 3, annular main body 31, first through hole 311, locking protrusion 312, clearance notch 313, arc-shaped splice 314, docking flange 315, first annular sealing part 32, first sealing lip 321, second sealing lip 322, slot 323, second annular sealing part 33, second through hole 331, screw 4, gap 200.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] This invention provides a bottom sealing structure for a wind turbine nacelle, which can be used in wind turbines. Figures 1 to 8 A preferred embodiment of the bottom sealing structure of the wind turbine nacelle provided by this utility model is shown.

[0041] Please see Figures 1 to 5In some embodiments, the bottom sealing structure 100 of the wind turbine nacelle includes a nacelle 1, a transport base 2, and a sealing plate 3. The bottom of the nacelle 1 is provided with an opening 11. The bottom of the transport base 2 is located outside the nacelle 1, and the top of the transport base 2 extends into the nacelle 1 from the opening 11. The nacelle 1 is supported on the top of the transport base 2. The sealing plate 3 includes an annular main body 31, a first annular sealing part 32, and a second annular sealing part 33. The annular main body 31 is fitted onto the bottom of the transport base 2 and is disposed on the nacelle 1 or the transport base 2. The first annular sealing part 32 seals between the end of the annular main body 31 near the transport base 2 and the transport base 2. The second annular sealing part 33 seals between the end of the annular main body 31 away from the transport base 2 and the nacelle 1.

[0042] Specifically, the bottom of the nacelle 1 has a downward-facing opening 11 for installing the yaw system of the wind turbine. The opening 11 is typically circular, and its shape usually matches the shape of the transport base 2. The top of the transport base 2 extends upward into the nacelle 1 from the opening 11, providing support to the nacelle 1 from the inside. The bottom of the transport base 2 is located outside and below the nacelle 1, thus supporting the nacelle 1 during transport. A gap 200 is formed between the outer peripheral surface of the transport base 2 and the inner surface of the opening 11, and the gap 200 is annular, extending circumferentially along the opening 11.

[0043] The sealing plate 3 is disposed between the nacelle 1 and the transport base 2. The sealing plate 3 can seal the gap 200 between the nacelle 1 and the transport base 2, so that the bottom sealing structure 100 of the wind turbine nacelle can be used as a solution for the scenario of seawater splashing or even impacting the product on the deck barge of the ocean.

[0044] The sealing plate 3 is generally arranged in a circular shape. The sealing plate 3 consists of an annular main body 31, a first annular sealing part 32, and a second annular sealing part 33. The annular main body 31 is sleeved on the transport base 2. The first annular sealing part 32 is located at the inner end of the sealing plate 3 (i.e., the end of the sealing plate 3 closest to the center of the opening 11), and the second annular sealing part 33 is located at the outer end of the sealing plate 3 (i.e., the end of the sealing plate 3 furthest from the center of the opening 11). The annular main body 31 can be fixedly installed on the cabin 1; the annular main body 31 can also be fixedly installed on the transport base 2. The following description will take the example of the annular main body 31 being installed on the cabin 1.

[0045] The annular main body 31 is located near the opening 11 of the cabin 1. The annular main body 31 can be located inside the opening 11; alternatively, it can be located outside the opening 11, i.e., the annular main body 31 is located on the lower side of the cabin 1. Alternatively, please refer to... Figure 1 , Figure 4and Figure 5 In some embodiments, the annular main body 31 is located on the lower side of the cabin 1. Positioning the annular main body 31 outside the cabin 1 makes the installation of the sealing plate 3 more convenient. The following description will use the example of the annular main body 31 being located on the lower side of the cabin 1.

[0046] A first annular sealing part 32 is provided between the inner end of the annular main body 31 and the transport base 2, so that the sealing plate 3 and the transport base 2 are sealed together by the first annular sealing part 32. A second annular sealing part 33 is provided between the outer end of the annular main body 31 and the cabin 1, so that the sealing plate 3 and the cabin 1 are sealed together by the second annular sealing part 33, thereby sealing the gap 200 between the cabin 1 and the transport base 2 by the sealing plate 3.

[0047] The sealing plate 3 of the bottom sealing structure 100 of the wind turbine nacelle of this utility model is set at the opening 11 at the bottom of the nacelle 1. The sealing plate 3 is sealed to the transport base 2 through the first annular sealing part 32, and the sealing plate 3 is sealed to the nacelle 1 through the second annular sealing part 33, thereby sealing the gap 200 between the nacelle 1 and the transport base 2 through the sealing plate 3.

[0048] Optionally, please refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the annular body portion 31 is a rigid sealing plate.

[0049] Specifically, the annular main body 31 is a rigid sealing plate made of a rigid material. Using a rigid sealing plate for the annular main body 31 improves the overall structural strength of the sealing plate 3. The specific material of the annular main body 31 can be set according to actual conditions; for example, the annular main body 31 can be a plastic plate, a wooden board, or a metal plate. Optionally, in some embodiments, the annular main body 31 is made of ABS plastic. The following description uses the example of the annular main body 31 being a rigid sealing plate.

[0050] A second annular sealing part 33 is provided between the cabin 1 and the annular main body 31. The second annular sealing part 33 can be a sealing gasket, sealing ring, or sealing adhesive, etc. Optionally, please refer to Figures 4 to 7 In some embodiments, the second annular sealing portion 33 is a sealing gasket. Using the second annular sealing portion 33 as a sealing gasket helps ensure a good seal between the cabin 1 and the annular main body 31. The following description uses the second annular sealing portion 33 as a sealing gasket as an example. The second annular sealing portion 33 is typically made of rubber; for example, it can be an EPDM rubber gasket.

[0051] Optionally, please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the annular main body 31 is located on the lower side of the cabin 1, and the second annular sealing part 33 is sandwiched between the bottom surface of the cabin 1 and the annular main body 31. The second annular sealing part 33 is arranged around the side of the opening 11 away from the transport base 2.

[0052] Specifically, the annular main body 31 is located on the lower side of the cabin 1, and the outer end of the annular main body 31 is located on the side of the opening 11 away from the center of the opening 11. The second annular sealing part 33 is disposed between the outer end of the annular main body 31 and the bottom surface of the cabin 1. The upper surface of the second annular sealing part 33 abuts against the lower edge of the opening 11, and the lower surface of the second annular sealing part 33 abuts against the upper surface of the annular main body 31, thereby achieving a sealed connection between the sealing plate 3 and the cabin 1.

[0053] The annular main body 31 is fixedly mounted on the nacelle 1. The specific fixing method between the annular main body 31 and the nacelle 1 can be set according to the actual situation. Optionally, please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the annular main body 31 is mounted on the cabin 1 by screws 4.

[0054] Specifically, the annular main body 31 is fixed to the engine compartment 1 by screws 4. The annular main body 31 has a first through hole 311 through which the tail of the screw 4 passes, and the engine compartment 1 has a threaded hole that engages with the threaded tail of the screw 4. This method of fixing the sealing plate 3 to the engine compartment 1 by screws 4 makes the installation and removal of the sealing plate 3 easier and more convenient. Typically, multiple screws 4 are spaced around the annular main body 31 circumferentially, and correspondingly, multiple first through holes 311 are provided on the annular main body 31.

[0055] The second annular sealing portion 33 is disposed between the annular main body portion 31 and the cabin 1. The second annular sealing portion 33 may be located on the side of the plurality of first through holes 311 near the opening 11; the second annular sealing portion 33 may also be located on the side of the plurality of first through holes 311 away from the opening 11; the second annular sealing portion 33 may also cover the plurality of first through holes 311. Optionally, please refer to Figure 4 , Figure 5 , Figure 6 and Figure 8 In some embodiments, the annular main body 31 and the second annular sealing part 33 are provided with a first through hole 311 and a second through hole 331 for the screw 4 to pass through, and multiple first through holes 311 and second through holes 331 are provided at intervals along the circumference of the annular main body 31.

[0056] Specifically, the second annular sealing part 33 covers the area on the annular main body 31 where multiple first through holes 311 are provided. In this way, the screws 4 that fix the annular main body 31 to the cabin 1 will also pass through the second annular sealing part 33, so that the screws 4 can apply sufficient clamping force to the second annular sealing part 33, thereby ensuring that the second annular sealing part 33 can achieve a better sealing effect.

[0057] The second annular sealing portion 33 is disposed at the outer end of the annular main body portion 31. Optionally, please refer to Figures 4 to 7 In some embodiments, the second annular sealing portion 33 is adhered to the surface of the annular main body portion 31 near the cabin 1.

[0058] Specifically, the second annular sealing part 33 is fixed to the upper surface of the annular main body part 31 by adhesive. This method of fixing the second annular sealing part 33 to the annular main body part 31 is relatively simple.

[0059] A first annular sealing part 32 is provided between the transport base 2 and the inner end of the annular main body 31. The first annular sealing part 32 can be a sealing gasket, sealing ring, or sealant, etc. Optionally, please refer to Figures 5 to 7 In some embodiments, the first annular sealing portion 32 is a sealing ring.

[0060] Specifically, the first annular sealing part 32 is a sealing ring. The outer end of the first annular sealing part 32 is fixedly disposed on the annular main body part 31, and the inner end of the first annular sealing part 32 abuts against the outer peripheral side of the transport base 2, thereby realizing a sealed connection between the sealing plate 3 and the transport base 2. Using the first annular sealing part 32 as a sealing ring makes the installation of the sealing plate 3 easier and more convenient. The following description uses the first annular sealing part 32 as a sealing ring as an example. The first annular sealing part 32 can typically be a rubber ring, for example, in some embodiments, the first annular sealing part 32 is a silicone ring.

[0061] The specific fixing method between the first annular sealing part 32 and the annular main body part 31 can be set according to the actual situation. For example, the first annular sealing part 32 and the annular main body part 31 can be fixedly connected by adhesive fixing or snap-fit ​​fixing. Optionally, please refer to Figures 5 to 7 In some embodiments, the end of the first annular sealing part 32 away from the transport base 2 is provided with a slot 323, which engages with the end of the annular main body part 31 near the transport base 2.

[0062] Specifically, a groove 323 is provided on the outer peripheral side of the first annular sealing part 32. The shape of the groove 323 is adapted to the shape of the inner end of the annular main body part 31, so that the inner end of the annular main body part 31 and the groove 323 on the first annular sealing part 32 can form a snap-fit ​​engagement, thereby fixing the first annular sealing part 32 on the annular main body part 31. This fixing method between the first annular sealing part 32 and the annular main body part 31 is relatively simple.

[0063] The specific shape and style of the first annular sealing part 32 can be set according to the actual situation. Optionally, please refer to [the relevant documentation]. Figures 5 to 7 In some embodiments, the first annular sealing portion 32 is provided with a first sealing lip 321 and a second sealing lip 322 at one end near the transport base 2, and the first sealing lip 321 and the second sealing lip 322 are gradually opened in the direction near the transport base 2.

[0064] Specifically, the first sealing lip 321 and the second sealing lip 322 are both disposed at the inner end of the first annular sealing portion 32. The first sealing lip 321 is located above the second sealing lip 322. The first sealing lip 321 is inclined upward, while the second sealing lip 322 is inclined downward. Thus, the distance between the first sealing lip 321 and the second sealing lip 322 gradually increases in the direction close to the transport base 2. The first annular sealing portion 32 is generally funnel-shaped. Setting the first annular sealing portion 32 in a funnel shape helps to ensure the sealing effect between the sealing plate 3 and the transport base 2.

[0065] Optionally, please refer to Figure 4 and Figure 5 In some embodiments, the end of the annular main body 31 near the transport base 2 is vertically opposite the opening 11.

[0066] Specifically, the annular main body 31 is located on the lower side of the cabin 1, and the inner end of the annular main body 31 is vertically opposite to the opening 11 on the cabin 1, so that the first annular sealing part 32 provided at the inner end of the annular main body 31 is vertically opposite to the opening 11. In this way, part of the first annular sealing part 32 can extend into the opening 11 and make sealing contact with the transport base 2, avoiding interference from the bottom of the cabin 1 to the first annular sealing part 32.

[0067] The annular main body 31 is arranged in a circular shape, and can be a single unit; alternatively, it can be composed of multiple parts assembled together. See also... Figure 2 , Figure 6 and Figure 8 In some embodiments, the annular main body 31 includes a plurality of arc-shaped splicing parts 314, and the annular main body 31 is formed by splicing the plurality of arc-shaped splicing parts 314 along the circumference of the annular main body 31.

[0068] Specifically, the annular main body 31 can be divided into two, three, four, five, six, or more arc-shaped splicing parts 314 along its circumference. By splicing multiple arc-shaped splicing parts 314 to form a complete annular main body 31, the processing difficulty of the annular main body 31 can be reduced. The following will be an example of an annular main body 31 including four arc-shaped splicing parts 314.

[0069] The specific fixing method between two adjacent arc-shaped splicing parts 314 can be set according to the actual situation. For example, two adjacent arc-shaped splicing parts 314 can be fixedly connected by screws, snap-fit, or welding. Optionally, please refer to Figure 1 and Figure 8 In some embodiments, the arc-shaped splicing portion 314 is folded at both ends of the annular main body portion 31 in the circumferential direction away from the cabin 1 to form two docking flange portions 315, and two adjacent arc-shaped splicing portions 314 are spliced ​​together through the docking flange portions 315.

[0070] Specifically, both ends of the arc-shaped splicing part 314 are folded downwards to form two mating flange parts 315. At the splicing point of two adjacent arc-shaped splicing parts 314, the two arc-shaped splicing parts 314 are close to each other and fit together. The two arc-shaped splicing parts 314 can be fixedly connected by means of screws or other methods, thereby realizing the fixed connection between two adjacent arc-shaped splicing parts 314. In this way, the mating flange parts 315 are set at both ends of each arc-shaped splicing part 314, making the fixed connection between two adjacent arc-shaped splicing parts 314 easier and better.

[0071] Optionally, please refer to Figure 2 , Figure 6 and Figure 8 In some embodiments, the annular main body 31 is provided with a locking protrusion 312 at one end near the transport base 2, and the locking protrusion 312 engages with the locking slot 21 on the transport base 2.

[0072] Specifically, the inner end of the annular main body 31 is provided with a locking protrusion 312, and the transport base 2 is provided with a locking slot 21. The first annular sealing part 32 is provided with a clearance structure corresponding to the locking protrusion 312, so that the locking protrusion 312 on the annular main body 31 can extend into the locking slot 21 on the transport base 2, so that the locking protrusion 312 and the locking slot 21 can form a locking engagement to achieve upper and lower limit.

[0073] Optionally, please refer to Figure 2 , Figure 6 and Figure 8In some embodiments, the annular main body 31 is provided with an avoidance notch 313 at one end near the transport base 2, and the ribs 22 on the transport base 2 pass through the annular main body 31 from the avoidance notch 313.

[0074] Specifically, multiple ribs 22 are usually provided at intervals along the circumference of the transport base 2 on the outer peripheral side surface of the transport base 2, and a clearance structure is also provided on the first annular sealing part 32 corresponding to the ribs 22, while a clearance notch 313 for the clearance ribs 22 is provided at the inner end of the annular main body part 31.

[0075] The bottom sealing structure 100 of the wind turbine nacelle has the following advantages:

[0076] 1. Simple and ingenious design, excellent sealing effect

[0077] 1.1 The second annular sealing part 33, made of EPDM soft material, is pasted at the contact position between the annular main body 31 and the bottom of the cabin 1. This solves the sealing problem and perfectly avoids the risk of scratching the cabin 1. Furthermore, it is fastened to the cabin 1 by screws 4, which effectively prevents the problem of poor sealing caused by transportation vibration and wave impact.

[0078] 1.2 The annular main body 31 and the transport base 2 are connected by a trumpet-shaped first annular sealing part 32. The connection position has a tongue (i.e., the first sealing lip 321 and the second sealing lip 322) that limits the transport base 2, which can effectively absorb manufacturing tolerances.

[0079] 2. Excellent performance

[0080] 2.1 The annular main body 31 made of ABS material has extremely high impact strength and rigidity, which can effectively resist mechanical stress. It is particularly suitable for components that need to withstand large impact forces, and is a perfect match for the transportation scenario of marine deck barges.

[0081] 2.2 ABS material is composed of acrylonitrile, butadiene and styrene, which gives the annular main body 31 excellent corrosion resistance, durability and high temperature resistance.

[0082] 2.3 The annular main body 31 is easy to injection mold, suitable for making products with complex structures. The high-precision mold can ensure the precise fit between the product and the metal terminal.

[0083] 3. Low production cost

[0084] 3.1 ABS sheets are easy to cut, drill, carve, bond and polish, suitable for a variety of processing techniques, and easy to process and manufacture;

[0085] 3.2. Mold vacuum forming facilitates mass production and reduces overall costs.

[0086] 4. Lightweight overall, easy and quick to install and operate.

[0087] 4.1 The weight of a single ABS sheet (i.e., the arc-shaped splicing part 314) is only 5.04kg, and no auxiliary operation such as cranes is required during personnel handling and installation;

[0088] 4.2 The installation process only involves drilling and fixing screws, which is simple and quick.

[0089] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A sealing structure for the bottom of a wind turbine nacelle, characterized in that, include: The cabin has an opening at its bottom; A transport base, the bottom of which is located outside the cabin, and the top of which extends into the cabin from the opening, with the cabin supported on the top of the transport base; A sealing plate, comprising an annular main body, a first annular sealing part, and a second annular sealing part, wherein the annular main body is sleeved on the bottom of the transport base and disposed on the cabin or the transport base, the first annular sealing part seals between the end of the annular main body near the transport base and the transport base, and the second annular sealing part seals between the end of the annular main body away from the transport base and the cabin.

2. The bottom sealing structure of the wind turbine nacelle according to claim 1, characterized in that, The annular main body is a rigid sealing plate.

3. The bottom sealing structure of the wind turbine nacelle according to claim 2, characterized in that, The annular main body is made of plastic, wood, or metal.

4. The bottom sealing structure of the wind turbine nacelle according to claim 1, characterized in that, The annular main body is located on the lower side of the cabin, and the second annular sealing part is sandwiched between the bottom surface of the cabin and the annular main body. The second annular sealing part is arranged around the opening on the side away from the transport base. And / or, The annular main body is mounted on the cabin by screws.

5. The bottom sealing structure of the wind turbine nacelle according to claim 4, characterized in that, The annular main body and the second annular sealing part are provided with a first through hole and a second through hole for the screw to pass through, and multiple first through holes and second through holes are provided at intervals along the circumference of the annular main body.

6. The bottom sealing structure of the wind turbine nacelle according to claim 1, characterized in that, The annular main body has a locking protrusion at one end near the transport base, which engages with a locking slot on the transport base; and / or The annular main body is provided with an avoidance notch at one end near the transport base, and the ribs on the transport base pass through the annular main body from the avoidance notch; And / or, The annular main body includes multiple arc-shaped splicing parts, which are spliced ​​together along the circumference of the annular main body.

7. The bottom sealing structure of the wind turbine nacelle according to claim 6, characterized in that, The arc-shaped splicing part is folded at both ends of the annular main body in the circumferential direction away from the nacelle to form two docking flange parts, and two adjacent arc-shaped splicing parts are spliced ​​together through the docking flange parts.

8. The bottom sealing structure of the wind turbine nacelle according to claim 1, characterized in that, The end of the annular main body near the transport base is vertically opposite the opening.

9. The bottom sealing structure of the wind turbine nacelle according to claim 1, characterized in that, The second annular sealing portion is adhered to the surface of the annular main body near the cabin; and / or, The second annular sealing part is a sealing gasket.

10. The bottom sealing structure of the wind turbine nacelle according to claim 1, characterized in that, The first annular sealing portion has a first sealing lip and a second sealing lip at one end near the transport base, and the first sealing lip and the second sealing lip are gradually opened in the direction near the transport base; and / or, The first annular sealing portion has a slot at one end away from the transport base, and the slot engages with the end of the annular main body near the transport base; and / or, The first annular sealing part is a sealing ring.

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