Drainage integrated structure for offshore wind turbine door frame

Abstract

The utility model discloses a drainage integrated structure for offshore wind turbine door frame relates to offshore wind turbine technical field. The utility model discloses a fan tower drum still includes: prevent backwash mechanism, and prevent backwash mechanism sets up on the fan tower drum. The utility model discloses through prevent backwash mechanism, specifically is when a small amount of rainwater infiltrates the inside of fan tower drum, will gather to the collecting bucket of collection subassembly, after the impurity is intercepted through filter board, through the drain pipe to the flow direction of prevent backwash subassembly, and rainwater pressure promotes the slide of connecting plate along the limiting rod and compresses spring, drives sealing block to separate from the drain pipe, forms the unobstructed drainage channel, when appearing backwash, the backflow pressure and spring reset force jointly promote the back movement of connecting plate, make the cylindrical portion of sealing block and the inner wall of drain pipe closely fit, and the backwash path is blocked to the rainwater that can efficiently collect and discharge infiltrates, prevents seawater or rainwater backwash thoroughly simultaneously, avoids the equipment in the inside of fan tower drum to be damaged because of the water inlet, guarantees offshore wind turbine stable operation.

Description

Technical Field

[0001] This utility model belongs to the field of offshore wind turbine technology, and in particular relates to an integrated drainage structure for offshore wind turbine door frames. Background Technology

[0002] Offshore wind power, as an important component of clean energy, has developed rapidly in recent years. Offshore wind turbines generate electricity using sea winds, and have the advantages of not occupying land resources, high wind speeds, and high power generation efficiency, making them a key area for countries to achieve energy transition. As an important supporting structure for offshore wind turbines, the wind turbine tower not only bears the weight of the wind turbine equipment, but also provides protective space for the internal equipment. The door frame on the tower serves as a passage for staff to enter and exit the tower, facilitating the maintenance and repair of the internal equipment.

[0003] Because rainwater easily accumulates on the door frame and seeps into the tower through the gaps in the door frame, the accumulated water is usually drained through the drainage structure. However, the existing drainage structure lacks a backflow prevention mechanism, which means that when there is heavy rainfall, storm surge or high tide, seawater will flow back through the drainage pipe, making the door frame area and the inside of the tower slippery and accelerating the corrosion of the door frame and the tower. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated drainage structure for offshore wind turbine door frames. By setting up an anti-backflow mechanism, specifically, when a small amount of rainwater seeps into the inside of the wind turbine tower, it will collect in the collection hopper of the collection component. After impurities are intercepted by the filter plate, it flows through the drain pipe to the anti-backflow component. The rainwater pressure pushes the connecting plate to slide along the limit rod and compress the spring, causing the sealing block to disengage from the drain pipe, forming a smooth drainage channel. When backflow occurs, the backflow pressure and the spring reset force together push the connecting plate back, so that the cylindrical part of the sealing block fits tightly against the inner wall of the drain pipe, blocking the backflow path. This can efficiently collect and discharge the seeping rainwater, while completely preventing seawater or rainwater backflow, avoiding damage to the equipment inside the wind turbine tower due to water ingress, ensuring the stable operation of the offshore wind turbine, and solving the problem of the lack of a backflow structure in existing drainage structures.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an integrated drainage structure for a door frame of an offshore wind turbine, comprising a wind turbine tower and: an anti-backflow mechanism, which is installed on the wind turbine tower and is used to prevent rainwater from flowing back into the tower. The anti-backflow mechanism includes a drainage pipe that passes through the wind turbine tower and is fixedly connected to the wind turbine tower; and a door frame mechanism, which is installed on the wind turbine tower and is used to guide and intercept rainwater. The door frame mechanism includes a door frame fixedly connected to the outer wall of the wind turbine tower, and a sealing door is installed on the inner wall of the door frame.

[0007] Furthermore, the anti-backflow mechanism also includes an anti-backflow component, which is installed on the drain pipe and is used to prevent rainwater from flowing back into the wind turbine tower through the drain pipe; and a collection component, which is installed inside the wind turbine tower and is used to collect rainwater that seeps into the wind turbine tower through the door frame; the collection component is located at the bottom of the door frame, and the rainwater collected by the collection component is discharged into the wind turbine tower through the drain pipe.

[0008] Furthermore, the door frame mechanism also includes a sealing component, which is disposed on the sealing door and is used to seal the gap between the sealing door and the door frame, reducing the probability of rainwater entering the wind turbine tower; and a waterproof component, which is disposed on the door frame and is used to guide and prevent water accumulation on the door frame.

[0009] Furthermore, the anti-backflow assembly includes an extension pipe fixedly connected to one end of the drain pipe located outside the wind turbine tower. Several limiting rods are fixedly connected to the inner wall of the extension pipe, and a connecting plate is slidably connected to the outer wall of the several limiting rods. The diameter of the connecting plate is smaller than the inner wall diameter of the extension pipe, and in the initial state, the connecting plate is in contact with the inner wall of the extension pipe near the drain pipe.

[0010] Furthermore, a sealing block is fixedly connected to the side of the connecting plate near the drain pipe, and the end of the sealing block away from the connecting plate extends into the interior of the drain pipe and slides in connection with the inner wall of the drain pipe. A spring is fixedly connected to the side of the connecting plate away from the sealing block, and an intercepting plate is fixedly connected to the end of the extension pipe away from the drain pipe. The intercepting plate is fixedly connected to the extension pipe by welding, and several holes for intercepting debris are evenly distributed on the intercepting plate.

[0011] Furthermore, the collection assembly includes a collection hopper fixedly connected to the inner wall of the wind turbine tower. The bottom of the collection hopper is fixedly connected to the end of the drain pipe away from the extension pipe. A filter plate is fixedly connected to the top of the collection hopper. The inner wall of the collection hopper is designed to be arc-shaped, and the lowest point is fixedly connected to the drain pipe by welding. A station plate is welded to the inner wall of the wind turbine tower. The collection hopper passes through the station plate and is fixedly connected to the station plate. The top of the filter plate is flush with the top of the station plate.

[0012] Furthermore, the sealing assembly includes an installation groove formed on the sealing door, the inner wall of the installation groove is fitted with a sealing strip and waterproof adhesive, and two sealing protrusions are fixedly connected to the side of the sealing strip away from the sealing door; the two sealing protrusions have the same shape as the sealing strip, but are smaller than the size of the sealing strip, and the two sealing protrusions are symmetrically distributed on the sealing strip.

[0013] Furthermore, the waterproof component includes a rain shield fixedly connected to the top of the door frame, and drainage plates fixedly connected to the left and right sides of the door frame. The drainage plates are also made of steel and have a right-angled triangular structure, with one right-angled side fixedly connected to the door frame and the hypotenuse located on the side away from the door frame.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model incorporates an anti-backflow mechanism. Specifically, when a small amount of rainwater seeps into the wind turbine tower, it collects in the collection hopper of the collection component. After impurities are intercepted by the filter plate, the water flows through the drain pipe to the anti-backflow component. The rainwater pressure pushes the connecting plate to slide along the limit rod and compresses the spring, causing the sealing block to detach from the drain pipe, forming a smooth drainage channel. When backflow occurs, the reverse flow pressure and the spring's restoring force together push the connecting plate back, causing the cylindrical part of the sealing block to fit tightly against the inner wall of the drain pipe, blocking the backflow path. This allows for efficient collection and discharge of infiltrated rainwater, while completely preventing seawater or rainwater backflow, avoiding damage to the equipment inside the wind turbine tower due to water ingress, and ensuring the stable operation of the offshore wind turbine.

[0016] 2. This utility model, through the setting of a sealing component, specifically, when the sealing door is closed, the rubber sealing strip in the mounting groove first comes into close contact with the inner wall of the door frame, filling the basic gap between the two and initially blocking the path of rainwater infiltration; at the same time, the two symmetrically distributed sealing protrusions on the sealing strip will deform due to compression, further reducing the gap space and forming a double sealing structure. This component, through the synergistic effect of the sealing strip and the sealing protrusions, can significantly reduce the probability of rainwater seeping into the wind turbine tower through the gap between the sealing door and the door frame, reduce the drainage pressure of the subsequent anti-backflow mechanism, and at the same time avoid the corrosion of the structure at the gap of the door frame by rainwater, thus extending the service life of the door frame.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the wind turbine tower of this utility model;

[0021] Figure 3 This is an exploded structural diagram of the door frame of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the collection hopper of this utility model;

[0023] Figure 5 This is a cross-sectional structural diagram of the extension tube of this utility model;

[0024] Figure 6 This utility model Figure 3 A magnified structural diagram of A in the middle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Wind turbine tower; 2. Anti-backflow mechanism; 21. Drainage pipe; 22. Anti-backflow component; 221. Extension pipe; 222. Limiting rod; 223. Connecting plate; 224. Sealing block; 225. Spring; 226. Interception plate; 23. Collection component; 231. Collection hopper; 232. Filter plate; 3. Door frame mechanism; 31. Door frame; 311. Sealing door; 32. Sealing component; 321. Mounting groove; 322. Sealing strip; 323. Sealing protrusion; 33. Waterproof component; 331. Rain shield; 332. Drainage plate. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6As shown, this utility model is a drainage integrated structure for an offshore wind turbine gate frame, including a wind turbine tower 1 and an anti-backflow mechanism 2. The anti-backflow mechanism 2 is installed on the wind turbine tower 1 and is used to prevent rainwater from flowing back into the tower. The anti-backflow mechanism 2 includes a drainage pipe 21 that passes through the wind turbine tower 1 and is fixedly connected to the wind turbine tower 1; a gate frame mechanism 3 is installed on the wind turbine tower 1 and is used to guide and intercept rainwater. The gate frame mechanism 3 includes a gate frame 31 fixedly connected to the outer wall of the wind turbine tower 1, and a sealing door 311 is installed on the inner wall of the gate frame 31; the anti-backflow mechanism 2 also includes an anti-backflow component 22, which is installed on the drainage pipe 21 and is used to prevent rainwater from flowing through. The situation where the drain pipe 21 flows back into the wind turbine tower 1; the collection component 23, which is installed inside the wind turbine tower 1, is used to collect rainwater that seeps into the wind turbine tower 1 through the door frame 31. The collection component 23 is located at the bottom of the door frame 31, and the rainwater collected by the collection component 23 is discharged into the wind turbine tower 1 through the drain pipe 21; the door frame mechanism 3 also includes a sealing component 32, which is installed on the sealing door 311 and is used to seal the gap between the sealing door 311 and the door frame 31, reducing the probability of rainwater entering the wind turbine tower 1; the waterproof component 33, which is installed on the door frame 31, is used to guide and prevent water accumulation on the door frame 31.

[0029] The anti-backflow component 22 includes an extension pipe 221 fixedly connected to one end of the drain pipe 21 located outside the wind turbine tower 1. A plurality of limiting rods 222 are fixedly connected to the inner wall of the extension pipe 221, and a connecting plate 223 is slidably connected to the outer wall of the limiting rods 222. The diameter of the connecting plate 223 is smaller than the inner diameter of the extension pipe 221, and in the initial state, the connecting plate 223 contacts the inner wall of the extension pipe 221 near the drain pipe 21. The side of the connecting plate 223 near the drain pipe 21 is fixedly connected to... There is a sealing block 224, the end of which, away from the connecting plate 223, extends into the interior of the drain pipe 21 and slides in connection with the inner wall of the drain pipe 21. A spring 225 is fixedly connected to the side of the connecting plate 223 away from the sealing block 224. An intercepting plate 226 is fixedly connected to the end of the extension pipe 221 away from the drain pipe 21. The intercepting plate 226 is fixedly connected to the extension pipe 221 by welding, and several holes for intercepting debris are evenly distributed on the intercepting plate 226; the collection component 23 is packaged. The system includes a collection hopper 231 fixedly connected to the inner wall of the wind turbine tower 1. The bottom of the collection hopper 231 is fixedly connected to the end of the drain pipe 21 away from the extension pipe 221. A filter plate 232 is fixedly connected to the top of the collection hopper 231. An anti-backflow mechanism 2 is provided. Specifically, when a small amount of rainwater seeps into the wind turbine tower 1, it collects in the collection hopper 231 of the collection assembly 23. After impurities are intercepted by the filter plate 232, the water flows through the drain pipe 21 to the anti-backflow assembly 22. The rainwater pressure pushes the connecting plate 223 along... The limiting rod 222 slides and compresses the spring 225, causing the sealing block 224 to disengage from the drain pipe 21, forming a smooth drainage channel. When backflow occurs, the backflow pressure and the restoring force of the spring 225 together push the connecting plate 223 back, so that the cylindrical part of the sealing block 224 fits tightly against the inner wall of the drain pipe 21, blocking the backflow path. This allows for efficient collection and discharge of infiltrated rainwater, while completely preventing seawater or rainwater backflow, avoiding damage to the internal equipment of the wind turbine tower 1 due to water ingress, and ensuring the stable operation of the offshore wind turbine.

[0030] The sealing assembly 32 includes a mounting groove 321 formed on the sealing door 311. A sealing strip 322 is installed on the inner wall of the mounting groove 321. Two sealing protrusions 323 are fixedly connected to the side of the sealing strip 322 away from the sealing door 311. The waterproof assembly 33 includes a rain shield 331 fixedly connected to the top of the door frame 31. Drainage plates 332 are fixedly connected to the left and right sides of the door frame 31. By setting the sealing assembly 32, specifically, when the sealing door 311 is closed, the rubber sealing strip 322 in the mounting groove 321 first comes into close contact with the inner wall of the door frame 31. The basic gap between the two is filled, initially blocking the path of rainwater infiltration. At the same time, the two symmetrically distributed sealing protrusions 323 on the sealing strip 322 will deform due to compression, further reducing the gap space and forming a double sealing structure. This component can significantly reduce the probability of rainwater seeping into the wind turbine tower 1 through the gap between the sealing door 311 and the door frame 31 by the synergistic effect of the sealing strip 322 and the sealing protrusions 323, reducing the drainage pressure of the subsequent anti-backflow mechanism 2, while avoiding the corrosion of the structure at the gap of the door frame by rainwater and extending the service life of the door frame 31.

[0031] A specific application of this embodiment is as follows: When a small amount of rainwater breaks through the protection of the door frame mechanism 3 and seeps into the wind turbine tower 1, it will flow downwards under the action of gravity and eventually collect in the collection hopper 231 located at the bottom of the door frame 31. Due to the arc-shaped design of the inner wall, the infiltrated rainwater can be guided to its lowest point. The rainwater first passes through the filter plate 232 at the top of the collection hopper 231. The filter plate 232 can intercept impurities mixed in the rainwater and prevent impurities from entering the subsequent drainage channel and causing blockage. The filtered rainwater enters the drain pipe 21 connected to it through the lowest point of the collection hopper 231. The rainwater continues to flow towards the outside of the wind turbine tower 1 in the drain pipe 21. When it flows through the anti-backflow component 22, the rainwater will enter the extension pipe 221. At this time, the pressure of the rainwater will push the connecting plate 223 to slide away from the drain pipe 21 along the limit rod 222 through the sealing block 224. During the movement of the connecting plate 223, the spring 225 will be compressed. Simultaneously, the sealing block 224 is pulled out from inside the drain pipe 21, forming a smooth drainage channel between the drain pipe 21 and the extension pipe 221, ultimately discharging rainwater outside the wind turbine tower 1. When seawater backflow or rainwater backflow occurs, the backflowing water will impact the side of the connecting plate 223 away from the sealing block 224. At the same time, the spring 225 resets under its own elastic force, pushing the connecting plate 223 towards the drain pipe 21 until the connecting plate 223 contacts the inner wall of the extension pipe 221 near the drain pipe 21. At this time, the sealing block 224 will re-insert into the drain pipe 21, and its cylindrical part will fit tightly against the inner wall of the drain pipe 21, thereby blocking the backflowing rainwater from entering the wind turbine tower 1 through the drain pipe 21, achieving the backflow prevention function. At the same time, the interceptor plate 226 prevents debris from entering the interior of the extension pipe 221 during backflow and affecting the components in the backflow prevention assembly 22.

[0032] During rainy weather, the waterproof component 33 and the sealing component 32 work together to guide, prevent, and intercept rainwater, reducing rainwater infiltration into the wind turbine tower 1. In the waterproof component 33, the rain shield 331 at the top of the door frame 31 has an overall arc-shaped structure with its convex surface facing outwards, which can directly block rainwater falling from above, preventing rainwater from directly impacting the connection between the door frame 31 and the sealing door 311. At the same time, the arc-shaped structure can guide rainwater to both sides of the door frame 31. The drainage plates 332 on the left and right sides of the door frame 31 have a right-angled triangular structure, with their hypotenuses facing away from the door frame 31. They can receive rainwater guided from the rain shield 331 and rainwater falling directly on the side of the door frame 31, and then guide the rainwater to the ground through their own tilt angle, preventing rainwater from accumulating on the side of the door frame 31. Rainwater accumulates and seeps inwards. The sealing component 32 further enhances the sealing effect. The sealing strip 322 in the mounting groove 321 on the sealing door 311 is in close contact with the inner wall of the door frame 31, which can fill the basic gap between the sealing door 311 and the door frame 31. The two symmetrical sealing protrusions 323 on the sealing strip 322 can form a double seal on the basis of the sealing strip 322. When the sealing door 311 is closed, the sealing protrusions 323 will be squeezed and deformed against the inner wall of the door frame 31, further reducing the gap space and effectively reducing the probability of rainwater seeping into the wind turbine tower 1 through the gap between the sealing door 311 and the door frame 31. Through the active guidance and prevention of the waterproof component 33 and the passive sealing and interception of the sealing component 32, the impact of rainwater on the internal equipment of the wind turbine tower 1 is greatly reduced.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A drainage integrated structure for offshore wind turbine gate frames, comprising a wind turbine tower (1), characterized in that, Also includes: An anti-backflow mechanism (2) is installed on the wind turbine tower (1) to prevent rainwater from flowing back into the tower. The anti-backflow mechanism (2) includes a drain pipe (21) that runs through the wind turbine tower (1) and is fixedly connected to the wind turbine tower (1). The door frame mechanism (3) is installed on the wind turbine tower (1). The door frame mechanism (3) is used to guide and intercept rainwater. The door frame mechanism (3) includes a door frame (31) fixedly connected to the outer wall of the wind turbine tower (1). A sealing door (311) is installed on the inner wall of the door frame (31).

2. The integrated drainage structure for offshore wind turbine door frame according to claim 1, characterized in that, The anti-backflow mechanism (2) further includes an anti-backflow component (22), which is installed on the drain pipe (21). The anti-backflow component (22) is used to prevent rainwater from flowing back into the return air fan tower (1) through the drain pipe (21); and Collection component (23) is disposed inside the wind turbine tower (1) and is used to collect rainwater that seeps into the wind turbine tower (1) through the door frame (31); The collection component (23) is located at the bottom of the door frame (31), and the rainwater collected by the collection component (23) is discharged into the interior of the wind turbine tower (1) through the drain pipe (21).

3. The integrated drainage structure for offshore wind turbine door frame according to claim 2, characterized in that, The door frame mechanism (3) also includes a sealing component (32), which is disposed on the sealing door (311). The sealing component (32) is used to seal the gap between the sealing door (311) and the door frame (31) to reduce the probability of rainwater entering the wind turbine tower (1). as well as A waterproof component (33) is provided on the door frame (31) for guiding and preventing water accumulation on the door frame (31).

4. The integrated drainage structure for offshore wind turbine door frame according to claim 2, characterized in that, The anti-backflow component (22) includes an extension pipe (221) fixedly connected to one end of the drain pipe (21) located outside the wind turbine tower (1). The inner wall of the extension pipe (221) is fixedly connected to a number of limiting rods (222), and the outer wall of the number of limiting rods (222) is slidably connected to a connecting plate (223). The extension pipe (221) is fixedly connected to the drain pipe (21) by welding, and the inner diameter of the extension pipe (221) is larger than the inner diameter of the drain pipe (21).

5. The integrated drainage structure for offshore wind turbine door frame according to claim 4, characterized in that, A sealing block (224) is fixedly connected to the side of the connecting plate (223) near the drain pipe (21). The end of the sealing block (224) away from the connecting plate (223) extends into the interior of the drain pipe (21) and slides in connection with the inner wall of the drain pipe (21). A spring (225) is fixedly connected to the side of the connecting plate (223) away from the sealing block (224). An intercepting plate (226) is fixedly connected to the end of the extension pipe (221) away from the drain pipe (21). Among them, the ends of several limit rods (222) away from the drain pipe (21) are fixedly connected to the interceptor plate (226) by welding, and the ends of the spring (225) away from the connecting plate (223) are also fixedly connected to the interceptor plate (226).

6. The integrated drainage structure for offshore wind turbine door frame according to claim 2, characterized in that, The collection assembly (23) includes a collection hopper (231) fixedly connected to the inner wall of the wind turbine tower (1). The bottom of the collection hopper (231) is fixedly connected to the end of the drain pipe (21) away from the extension pipe (221). A filter plate (232) is fixedly connected to the top of the collection hopper (231). The collecting hopper (231) is fixedly connected to the inner wall of the wind turbine tower (1) by welding, and the filter plate (232) is fixedly connected to the collecting hopper (231) by welding.

7. The integrated drainage structure for offshore wind turbine door frame according to claim 3, characterized in that, The sealing assembly (32) includes a mounting groove (321) formed on the sealing door (311), and a sealing strip (322) is installed on the inner wall of the mounting groove (321). Two sealing protrusions (323) are fixedly connected to the side of the sealing strip (322) away from the sealing door (311). The inner wall of the mounting groove (321) is adapted to the sealing strip (322), which is made of rubber and is bonded to the inner wall of the mounting groove (321) with waterproof adhesive.

8. The integrated drainage structure for offshore wind turbine door frame according to claim 3, characterized in that, The waterproof component (33) includes a rain shield (331) fixedly connected to the top of the door frame (31), and a drainage plate (332) fixedly connected to the left and right sides of the door frame (31). The rain shield (331) is made of steel and has an overall arc-shaped structure. It is fixedly connected to the door frame (31) by welding.

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