Tube door structure of wind turbine generator system and wind turbine generator system

Abstract

The utility model discloses a kind of cylinder door structure of wind generating set and wind generating set, it is related to wind power generation technical field, wherein, the cylinder door structure of wind generating set includes door frame, cylinder door, drainage assembly;Door frame is installed on the tower tube of wind generating set, door hole is formed in door frame, the side of door frame close to door hole is formed with water guide groove and is provided with first sealing assembly, water guide groove and sealing assembly are sequentially arranged along the direction of inside tower tube to outside tower tube, and water guide groove is arranged in the bottom frame of door frame, and rainwater grate is arranged at the slot of water guide groove;Cylinder door is set in door hole, and one end of cylinder door is hinged in one side frame of door frame, the outer edge of cylinder door is provided with second sealing assembly, and first sealing assembly and second sealing assembly are sealingly cooperated;Drainage assembly includes drain pipe, and drain pipe is communicated with water guide groove.The cylinder door structure of wind generating set provided by the utility model can effectively avoid rainwater to infiltrate into tower tube, and ensure the dryness inside tower tube.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a gate structure for a wind turbine generator set and a wind turbine generator set. Background Technology

[0002] In wind turbine generators, the tower serves as both the gravity structure supporting the rotor and nacelle and the installation platform for critical subsystems such as electrical, control, and cooling systems. To facilitate access for maintenance personnel, openable doors are typically installed at the bottom of the tower. However, because the interior of the tower is a relatively sealed space, water can easily seep into the tower through gaps in the doors during rain or snow. This seepage is difficult to expel, leading to increased humidity inside the tower. Consequently, this increased humidity causes corrosion of the equipment within the tower, ultimately affecting the lifespan of the wind turbine generator. Utility Model Content

[0003] The main purpose of this utility model is to propose a gate structure for a wind turbine generator set and a wind turbine generator set, aiming to solve the technical problem that water can easily seep into the tower through the gaps in the gate, causing corrosion of the equipment inside the tower.

[0004] To achieve the above objectives, the present invention proposes a gate structure for a wind turbine generator set, which includes:

[0005] A door frame is installed on the tower of the wind turbine generator. A door opening is formed inside the door frame. A water guide channel is formed on the side of the door frame near the door opening, and a first sealing component is provided. The water guide channel and the first sealing component are arranged sequentially from the inside of the tower to the outside of the tower, and the first sealing component is arranged around the door opening. The water guide channel is located on the bottom frame of the door frame, the opening of the water guide channel faces upward, and a rainwater grate is provided at the opening of the water guide channel.

[0006] A cylindrical door is provided in the doorway, and one end of the cylindrical door is hinged to a side frame of the door frame for opening or closing the doorway. A second sealing assembly is provided around the outer edge of the cylindrical door, and the first sealing assembly is used to seal with the second sealing assembly when the cylindrical door is closed in the doorway.

[0007] A drainage assembly, comprising a drain pipe connected to the water guide channel.

[0008] In one embodiment, a sealing groove is formed on the side of the door frame near the door opening. The sealing groove surrounds the door opening and its opening communicates with the door opening. The water guide groove and the sealing groove are arranged sequentially along the direction from the inside of the tower to the outside of the tower. The first sealing component is disposed in the sealing groove and extends out of the sealing groove to seal with the second sealing component.

[0009] In one embodiment, the first sealing assembly includes a plurality of sealing rings, each of which is arranged around the door opening, and the plurality of sealing rings are sequentially spaced apart in the sealing groove along the direction from the inside of the tower to the outside of the tower, and each of the sealing rings extends out of the sealing groove to seal with the second sealing assembly.

[0010] In one embodiment, the second sealing assembly includes a sealing sleeve that surrounds the cylinder door and is detachably fitted around the outer periphery of the door opening, and is used to seal with a plurality of sealing rings when the cylinder door is closed in the door opening.

[0011] In one embodiment, the two ends of the water guide channel extend to the two side frames of the door frame, respectively.

[0012] In one embodiment, the drainage assembly includes two drainage pipes, which are respectively connected to both ends of the water guide channel.

[0013] In one embodiment, the water guide channel includes a water guiding section and a water collecting section connected sequentially from top to bottom. The water guiding section forms the opening of the water guide channel above the water guiding section. The drain pipe is connected to the water collecting section. The water guiding section is of equal diameter from top to bottom, and the water collecting section gradually narrows from the bottom end of the water guiding section downwards.

[0014] In one embodiment, the gate structure further includes a door tread, which is disposed on the lower side of the bottom frame and on the outer side of the tower.

[0015] In one embodiment, the door tread is inclined downwards along the direction from inside the tower to outside the tower, and the inclination angle of the door tread is A, where 1.2°≤A≤1.8°.

[0016] This utility model also proposes a wind turbine generator set, which uses the above-mentioned gate structure of the wind turbine generator set.

[0017] The technical solution of this utility model involves installing a door frame at the bottom of the tower. Along the side of the door frame near the door opening, a water guide channel and a first sealing component are sequentially arranged from the inside to the outside of the tower. The water guide channel is located on the bottom frame of the door frame, with its opening facing upwards. A rain grate covers the opening. The rain grate consists of several horizontal or vertical grates, with the top surface of the grates flush with the rest of the upper surface of the bottom frame of the door frame. This creates a continuous and flat surface above the water guide channel, ensuring unimpeded passage for maintenance personnel, tools, and equipment, preventing personnel from tripping over the water guide channel, and intercepting debris such as leaves and gravel, effectively preventing blockage of the water guide channel and drainage pipes. One side of the door is hinged to the side frame of the door frame, with a second sealing component installed around its outer edge. When the door opening is closed, the second sealing component presses against the first sealing component, forming a first layer of waterproof barrier to prevent rainwater from entering the tower. Furthermore, even if a small amount of water manages to pass through the first sealing barrier, the guide channel near the inner side of the tower can collect the water and discharge it through the drain pipe, thus more effectively preventing water from entering the tower through the gaps in the gate. The gate structure of the wind turbine generator provided by this invention prevents rainwater from seeping into the tower, ensuring the tower interior remains dry, preventing corrosion of the equipment inside the tower, and extending the service life of the wind turbine generator. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0019] Figure 1 A schematic diagram of an embodiment of the gate structure of the wind turbine generator set provided by this utility model;

[0020] Figure 2 A cross-sectional view of the bottom of an embodiment of the gate structure of the wind turbine generator set provided by this utility model;

[0021] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0022] Figure 4 A schematic diagram of the door frame in one embodiment of the gate structure of the wind turbine generator set provided by this utility model;

[0023] Figure 5 A schematic diagram of the doorway structure in one embodiment of the wind turbine generator set provided by this utility model;

[0024] Figure 6 A schematic diagram of the rainwater grate in one embodiment of the gate structure of the wind turbine generator provided by this utility model.

[0025] Explanation of icon numbers:

[0026] 100. Gate structure; 10. Gate frame; 11. Bottom frame; 12. Side frame; 13. Water guide channel; 131. Water guide section; 132. Water collection section; 14. First sealing assembly; 141. Sealing ring; 15. Sealing groove; 16. Rainwater grate; 161. Grille; 20. Gate; 21. Second sealing assembly; 211. Sealing sleeve; 30. Drainage assembly; 31. Drainage pipe; 40. Door sill; 200. Tower.

[0027] 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

[0028] 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 scope of protection of the present utility model.

[0029] 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 specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] 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 technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, 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. When 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.

[0031] This utility model proposes a gate structure 100 for a wind turbine generator set.

[0032] Please see Figures 1 to 6 In one embodiment of the present invention, the gate structure 100 of the wind turbine generator set includes a gate frame 10, a gate 20, and a drainage component 30. The gate frame 10 is installed on the tower 200 of the wind turbine generator set. A door opening is formed inside the gate frame 10. A water guide groove 13 is formed on the side of the gate frame 10 near the door opening, and a first sealing component 14 is provided. The water guide groove 13 and the first sealing component 14 are arranged sequentially from the inside of the tower 200 to the outside of the tower 200, and the first sealing component 14 is arranged around the door opening. The water guide groove 13 is provided on the bottom frame 11 of the gate frame 10, with the groove opening of the water guide groove 13 facing upward, and a rainwater grate 16 is provided at the groove opening of the water guide groove 13.

[0033] The cylindrical door 20 is disposed in the doorway, and one end of the cylindrical door 20 is hinged to a side frame 12 of the door frame 10 for opening or closing the doorway. A second sealing component 21 is disposed around the outer edge of the cylindrical door 20. A first sealing component 14 is used to seal with the second sealing component 21 when the cylindrical door 20 is closed in the doorway. The drainage component 30 includes a drain pipe 31, which is connected to the water guide channel 13.

[0034] The technical solution of this utility model involves installing a door frame 10 at the bottom of the tower 200. On the side of the door frame 10 near the door opening, a water guide channel 13 and a first sealing component 14 are sequentially arranged from the inside to the outside of the tower 200. The water guide channel 13 is located on the bottom frame 11 of the door frame 10, with its opening facing upwards. A rain grate 16 covers the opening. The rain grate 16 is composed of several horizontal or vertical gratings 161, the top surface of which is flush with the remaining upper surface of the bottom frame 11 of the door frame 10. This creates a continuous and flat surface above the water guide channel 13, ensuring unimpeded passage for maintenance personnel, tools, and equipment, preventing maintenance personnel from tripping over the water guide channel 13, and intercepting debris such as leaves and gravel, effectively preventing blockage of the water guide channel 13 and the drain pipe 31. One side of the gate 20 is hinged to the side frame 12 of the door frame 10, and a second sealing component 21 is provided around its outer edge. When the gate 20 is closed, the second sealing component 21 and the first sealing component 14 press against each other and seal, forming a first waterproof barrier to prevent rainwater from entering the tower 200. Furthermore, even if a small amount of water manages to pass through the first sealing barrier, the guide channel near the inside of the tower 200 collects the water and discharges it through the drain pipe 31, thus more effectively preventing water from entering the tower 200 through the gaps in the gate 20. The gate structure 100 of this invention prevents rainwater from seeping into the tower 200, ensuring the interior of the tower 200 remains dry, preventing corrosion of the equipment inside the tower 200, and improving the service life of the wind turbine.

[0035] In one embodiment of this utility model, a sealing groove 15 is formed on the side of the door frame 10 near the door opening. The sealing groove 15 is arranged around the door opening, and the opening of the sealing groove 15 is connected to the door opening. The water guide groove 13 and the sealing groove 15 are arranged sequentially from the inside of the tower 200 to the outside of the tower 200. The first sealing component 14 is disposed in the sealing groove 15 and extends out of the sealing groove 15 to seal with the second sealing component 21.

[0036] Specifically, such as Figure 4 As shown, on the side of the door frame 10 near the door opening, a water guide groove 13 and a sealing groove 15 are sequentially arranged from the inside of the tower 200 to the outside of the tower 200. The sealing groove 15 is located outside the water guide groove 13, and the first sealing component 14 is embedded in the sealing groove 15 and extends upward from the sealing groove 15. The sealing groove 15 provides a fixed installation reference for the first sealing component 14, preventing the sealing strip from shifting or twisting under long-term pressure. In addition, the sealing groove 15 can also partially hide the first sealing component 14, reducing the direct erosion of the first sealing component 14 by ultraviolet rays and wind and sand, which can effectively delay the aging of the first sealing component 14.

[0037] In one embodiment of the present invention, the first sealing component 14 includes a plurality of sealing rings 141, each sealing ring 141 being arranged around the door opening, and the plurality of sealing rings 141 being arranged sequentially and spaced apart in the sealing groove 15 along the direction from the inside of the tower 200 toward the outside of the tower 200, and each sealing ring 141 extending out of the sealing groove 15 to seal and cooperate with the second sealing component 21.

[0038] Specifically, such as Figure 2 and Figure 3 As shown, a water guide groove 13 and a sealing groove 15 are sequentially machined on the side of the door frame 10 near the door opening, running from the inside to the outside of the tower 200. Multiple sealing rings 141 are arranged at intervals within the same sealing groove 15, with each sealing ring 141 surrounding the door opening and its front end extending beyond the groove. When the door 20 is closed, each sealing ring 141 independently compresses with the second sealing assembly 21, forming a multi-lip sealing interface. If a small amount of water seeps into the sealing ring 141 near the outside of the tower 200, the water flow will continue to be blocked by the sealing ring 141 near the inside of the tower 200, preventing water from seeping in. Therefore, the multiple sealing rings 141 significantly improve the waterproof redundancy; even if a single sealing ring 141 fails, the overall sealing function will not be lost, ensuring sealing reliability and a better sealing effect.

[0039] In one embodiment of the present invention, the second sealing component 21 includes a sealing sleeve 211, which surrounds the cylindrical door 20 and is detachably fitted onto the outer periphery of the door opening, and is used to seal with a plurality of sealing rings 141 when the cylindrical door 20 is closed.

[0040] Specifically, a sealing sleeve 211 and multiple sealing rings 141 are used in conjunction. When the cylinder door 20 is closed, the sealing sleeve 211 is detachably fitted onto the outer periphery of the cylinder door 20, and simultaneously forms a sealing fit with the multiple sealing rings 141 arranged sequentially and spaced apart along the inside of the tower 200 towards the outside of the tower 200 within the sealing groove 15. Each sealing ring 141 extends out of the sealing groove 15 and presses against the outer edge of the sealing sleeve 211, forming a multi-stage sealing interface. When external rain or snow seeps in, the water flow is blocked sequentially by the multi-stage sealing rings 141, and any trace amount of water that passes through falls into the water guide trough 13 and is discharged from the tower 200 through the drain pipe 31. Thus, the combination of the sealing sleeve 211 and the multiple sealing rings 141 achieves a detachable overall seal, improving sealing reliability. At the same time, the detachable sealing sleeve 211 makes it easier to replace, reducing maintenance workload, keeping the inside of the tower 200 dry, and extending the service life of the unit.

[0041] Furthermore, the sealing ring 141 is a rubber sealing ring 141, and the sealing sleeve 211 is a rubber sealing sleeve 211.

[0042] In one embodiment of the present invention, the two ends of the water guide groove 13 extend to the two side frames 12 of the door frame 10, respectively.

[0043] Specifically, such as Figure 4 As shown, a water guide groove 13 is integrally formed on the bottom frame 11 of the door frame 10, and the two ends of the water guide groove 13 extend to the left and right side frames 12 of the door frame 10, thus forming a continuous and uninterrupted transverse drainage channel. When rain and snow seep in through the gap between the door 20 and the door frame 10, the water can quickly converge to the water guide groove 13 under the action of gravity, no matter where it falls on the bottom frame 11. The water on the two side frames 12 can also flow into the water guide groove 13 extending to the side frames 12 under the action of gravity. Finally, the water is discharged from the tower 200 in time through the drain pipe 31 connected to the water guide groove 13, which improves the drainage effect, effectively prevents water from seeping into the tower 200, and further ensures the dryness inside the tower 200.

[0044] In one embodiment of the present invention, the water guide channel 13 includes a water guide section 131 and a water collection section 132 that are connected sequentially from top to bottom. The opening of the water guide channel 13 is formed above the water guide section 131. The drain pipe 31 is connected to the water collection section 132. The water guide section 131 is arranged with a constant diameter from top to bottom, and the water collection section 132 is arranged to gradually narrow from the bottom end of the water guide section 131 downwards.

[0045] Specifically, such as Figure 3 As shown, the water guide channel 13 is configured as a water guide section 131 and a water collection section 132 connected sequentially from top to bottom: After the water flows in from the bottom frame 11 and the two side frames 12, it is first evenly distributed at a low flow rate in the rectangular water guide section 131, and then it is accelerated by the gradually narrowing channel shape when it enters the trapezoidal water collection section 132 to achieve accelerated collection of the water flow, and finally smoothly enters the drain pipe 31 to be discharged from the tower 200; in this process, the sediment is carried away with the accelerated water flow, avoiding siltation at the bottom of the channel, keeping the water guide channel 13 unobstructed for a long time, realizing self-cleaning drainage, and reducing the frequency of manual cleaning.

[0046] In one embodiment of the present invention, the drainage component 30 includes two drainage pipes 31, which are respectively connected to both ends of the water guide channel 13.

[0047] Specifically, such as Figure 4 As shown, a drain pipe 31 is connected to each end of the water guide trough 13, so that the water guide trough 13 and the two drain pipes 31 form a "one trough, two flow" drainage path: no matter whether the water flows into the water guide trough 13 from the bottom frame 11 or the two side frames 12, it can immediately enter the corresponding drain pipe 31 at the nearest end, realizing bidirectional synchronous discharge and avoiding local water accumulation caused by a sudden increase in flow or blockage by foreign objects at a single drain outlet; at the same time, the two drain pipes 31 serve as backups for each other, so even if one of them is blocked, the other can still keep the drainage unobstructed, thereby further improving the reliability of drainage.

[0048] In one embodiment of the present invention, the cylinder gate structure 100 further includes a door tread 40, which is disposed on the lower side of the bottom frame 11 and on the outer side of the tower cylinder 200.

[0049] Specifically, such as Figure 2 As shown, to prevent water from the ground from seeping into the tower 200 through the door 20, the door 20 needs to be positioned at a certain distance above the ground. A door step 40 is installed on the outside of the tower 200, allowing maintenance personnel to stand on it and easily open the door 20 and enter the tower 200. Furthermore, the door step 40 is located below the bottom frame 11. When water accumulates on the door step 40, its position below the bottom frame 11 effectively prevents water from seeping into the tower 200 through the gap between the door 20 and the bottom frame 11, further ensuring the dryness of the tower 200.

[0050] In one embodiment of this utility model, the door sill 40 is inclined downwards along the direction from the inside of the tower 200 toward the outside of the tower 200.

[0051] Specifically, the door sill 40 is designed as a downward sloping surface along the direction from the inside to the outside of the tower 200. The sloping door sill 40 allows water accumulated on the door sill 40 to flow out quickly along the slope under the action of gravity, preventing water from stagnating on the door sill 40, thereby effectively draining the water from the door sill 40.

[0052] In one embodiment of this utility model, the tilt angle of the door pedal 40 is A, where 1.2°≤A≤1.8°.

[0053] Furthermore, the tilt angle of the door sill 40 is an acute angle between the door sill 40 and the horizontal plane. Within this angle range, the surface of the door sill 40 can form a sufficient slope to allow the accumulated water to drain quickly by gravity, while preventing the maintenance personnel from losing their footing or tools from rolling off due to excessive slope, thus balancing drainage efficiency and operational safety.

[0054] This utility model also proposes a wind turbine generator set, which uses a gate structure 100. The specific structure of the gate structure 100 is as described in the above embodiments. Since this wind turbine generator set adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A nacelle door structure of a wind turbine generator system, characterized by, The portal structure includes: A door frame is installed on the tower of the wind turbine generator. A door opening is formed inside the door frame. A water guide channel is formed on the side of the door frame near the door opening, and a first sealing component is provided. The water guide channel and the first sealing component are arranged sequentially from the inside of the tower to the outside of the tower, and the first sealing component is arranged around the door opening. The water guide channel is located on the bottom frame of the door frame, the opening of the water guide channel faces upward, and a rainwater grate is provided at the opening of the water guide channel. A cylindrical door is provided in the doorway, and one end of the cylindrical door is hinged to a side frame of the door frame for opening or closing the doorway. A second sealing assembly is provided around the outer edge of the cylindrical door, and the first sealing assembly is used to seal with the second sealing assembly when the cylindrical door is closed in the doorway. A drainage assembly, comprising a drain pipe connected to the water guide channel.

2. The tub door structure of a wind power generator set according to claim 1, wherein A sealing groove is also formed on the side of the door frame near the door opening. The sealing groove surrounds the door opening and the opening of the sealing groove communicates with the door opening. The water guide groove and the sealing groove are arranged sequentially along the direction from the inside of the tower to the outside of the tower. The first sealing component is disposed in the sealing groove and extends out of the sealing groove to seal with the second sealing component.

3. The tub door structure of a wind power generator set according to claim 2, wherein The first sealing assembly includes a plurality of sealing rings, each of which is arranged around the door opening, and the plurality of sealing rings are arranged sequentially and spaced apart in the sealing groove along the direction from the inside of the tower to the outside of the tower, and each of the sealing rings extends out of the sealing groove to seal with the second sealing assembly.

4. The gate structure of the wind turbine generator set as described in claim 3, characterized in that, The second sealing assembly includes a sealing sleeve that surrounds the cylinder door and is detachably fitted around the outer periphery of the door opening, and is used to seal with a plurality of sealing rings when the cylinder door is closed in the door opening.

5. The gate structure of the wind turbine generator set as described in any one of claims 1 to 4, characterized in that, The two ends of the water guide channel extend to the two side frames of the door frame, respectively.

6. The gate structure of the wind turbine generator set as described in claim 5, characterized in that, The drainage assembly includes two drainage pipes, which are respectively connected to both ends of the water guide channel.

7. The gate structure of the wind turbine generator set as described in any one of claims 1 to 4, characterized in that, The water guide channel includes a water guiding section and a water collecting section connected sequentially from top to bottom. The opening of the water guide channel is formed above the water guiding section. The drain pipe is connected to the water collecting section. The water guiding section is of equal diameter from top to bottom. The water collecting section gradually narrows from the bottom end of the water guiding section downwards.

8. The gate structure of the wind turbine generator set as described in any one of claims 1 to 4, characterized in that, The gate structure also includes a door sill, which is located on the lower side of the bottom frame and on the outer side of the tower.

9. The gate structure of the wind turbine generator set as described in claim 8, characterized in that, The door sill is inclined downwards along the direction from inside the tower to outside the tower, and the inclination angle of the door sill is A, where 1.2°≤A≤1.8°.

10. A wind turbine generator set, characterized in that, The wind turbine generator set used is the wind turbine generator set as described in any one of claims 1 to 9.

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