Automatic drainage device for wind power generator

Abstract

The utility model discloses an automatic drainage device of wind driven generator, including backing plate, pressing plate and rubber bush, rubber bush top end is equipped with always open, bottom end is equipped with flexible close joint, its top end is clamped between backing plate and pressing plate, and the middle part of backing plate is equipped with the connecting mouth, and rubber bush is pasted in the inside of connecting mouth, and backing plate and pressing plate can be elliptical or prismatic, and are fixed through the screw bush, bolt, and backing plate is equipped with the limit strip, the strip and the pad with inclined plane, and the pressing plate is equipped with the pressing platform correspondingly, and rubber bush is built -in inner support strip, and bottom pre -buried magnetic strip, the utility model discloses through rubber bush and is fixed to the soft connection bottom opening, and the close joint is closed under normal condition, and opens the drainage when the water level when borrowing the air pressure difference in unit, realizes automatic drainage, and flexible rubber bush is pasted with soft connection, avoids its cracking, and guarantees structural integrity and operating stability.

Description

Technical Field

[0001] This utility model relates to the field of drainage structure technology, and in particular to an automatic drainage device for wind turbines. Background Technology

[0002] In the structural design of wind turbines, the connection between the nacelle and the generator is often made using a flexible connection. This flexible connection can adapt to slight vibrations and displacements during the operation of the unit, ensuring the flexibility of the connection and serving as an important transitional component for the normal operation of the wind turbine. After the wind turbine has been running for a period of time, the flexible connections are prone to damage, and the gaps between the flexible connections and the pressure plates are difficult to seal completely. During rainy or snowy weather, rainwater or snowmelt can seep into the turbine through the damaged flexible connections and the gaps in the pressure plates. If the seepage is not dealt with in time, water may further penetrate into the generator, directly affecting the generator's insulation performance. This can not only lead to abnormal generator operation but may also cause short circuits, shutdowns, and other malfunctions, seriously threatening the operational safety of the wind turbine and increasing the unit's maintenance costs and downtime losses. To address the aforementioned water seepage problem, the industry currently employs two main approaches: First, relying on manual labor for drainage operations requires staff to regularly inspect and clean up the seeping water. This method not only consumes a lot of manpower and time, but also has low drainage efficiency and makes it difficult to deal with the water in a timely manner, and there are still potential risks of failure. Second, opening a drain outlet at the bottom of the flexible connection can achieve a certain drainage effect, but the opening will directly damage the original structural integrity of the flexible connection, aggravate the damage to the flexible connection, and further reduce the sealing performance of the connection. This may introduce new water leakage risks, and cannot guarantee the sealing effect and operational stability of the unit, making it difficult to solve the problem at its root. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that manual drainage is inefficient and opening drainage outlets can easily damage the structural integrity.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an automatic drainage device for wind turbine generators, including a pad, a pressure plate and a rubber sleeve. The top of the rubber sleeve is provided with a normally open end and the bottom is provided with a flexible closed slit. The top of the rubber sleeve is clamped between the pad and the pressure plate. A connection port is provided in the middle of the pad and the rubber sleeve fits against the inside of the connection port.

[0005] Furthermore, the tops of the pad, pressure plate, and rubber sleeve are all elliptical.

[0006] Furthermore, threaded sleeves are fixedly connected to the bottom of both ends of the pad, the pressure plate is elliptical in shape to fit the pad, and through holes corresponding to the threaded sleeves are opened at both ends of the pressure plate. The pressure plate is fixedly connected to the pad by bolts.

[0007] Furthermore, the edge of the pad is provided with an upwardly protruding limiting strip, and the pressure plate is attached to the inner side of the limiting strip.

[0008] Furthermore, the top surface of the pressure plate is flush with the top surface of the limiting strip.

[0009] Furthermore, the top surface of the pad is provided with crisscrossing ribs.

[0010] Furthermore, the tops of the pad, pressure plate, and rubber sleeve are all prismatic.

[0011] Furthermore, the edge of the connecting hole of the pad is provided with a pad platform, the inner side of the pad platform is provided with an inclined surface, the bottom of the pressure plate is provided with a pressure platform adapted to the pad platform, and the bottom of the pressure platform is provided with a wedge-shaped surface adapted to the inner inclined surface of the pad platform.

[0012] Furthermore, an inner support strip is provided between the top and middle of the rubber sleeve, and the inner support strip is embedded inside the side wall of the rubber sleeve.

[0013] Furthermore, magnetic strips are pre-embedded on both sides of the bottom of the rubber sleeve, and the magnetic strips are evenly distributed.

[0014] This utility model provides an automatic drainage device for wind turbines, which has the following beneficial effects.

[0015] After opening the bottom of the flexible connection, a rubber sleeve is used to penetrate the opening, and a pad is fixed to the bottom of the flexible connection. The rubber sleeve is then fixed by a pressure plate. The top of the rubber sleeve is normally open, and the closure seam at the bottom of the rubber sleeve is normally sealed. When water accumulates, the water enters the inside of the rubber sleeve, and the air pressure difference between the inside and outside of the unit will cause the closure seam at the bottom of the rubber sleeve to open, draining the water and thus achieving automatic drainage. The flexible rubber sleeve can fit snugly against the bottom of the flexible connection, preventing cracking at the bottom of the flexible connection. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is an exploded view of the structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the rubber sleeve in an embodiment of this utility model.

[0019] In the diagram: 1. Pad; 2. Pressure plate; 3. Rubber sleeve; 4. Limiting strip; 5. Magnetic strip; 6. Screw sleeve; 7. Bolt; 8. Rib; 9. Pad platform; 10. Pressure platform. Detailed Implementation

[0020] like Figures 1 to 3 As shown, this utility model provides an automatic drainage device for wind turbines, including a pad 1, a pressure plate 2 and a rubber sleeve 3. The top of the rubber sleeve 3 is provided with a normally open end and the bottom is provided with a flexible closed slit. The top of the rubber sleeve 3 is clamped between the pad 1 and the pressure plate 2. The middle of the pad 1 is provided with a connection port and the rubber sleeve 3 is fitted to the inside of the connection port.

[0021] The rubber sleeve 3 is a tubular structure. One end of the rubber sleeve 3 is pressed to form a closed seam, which is normally closed. An opening is made at the bottom of the flexible connection, and the pad 1 is fixed at the opening. Then, the rubber sleeve 3 is inserted into the opening, ensuring that the outer wall of the rubber sleeve 3 fits against the inner wall of the bottom opening of the flexible connection. The top of the flexible connection is clamped and fixed by the pressure plate 2. During operation, water accumulated on the flexible connection collects in the rubber sleeve 3. During unit operation, the air pressure difference between the inside and outside of the unit will cause the closed seam at the bottom of the rubber sleeve 3 to open, draining the accumulated water, thus achieving an automatic drainage effect.

[0022] like Figure 1 As shown. The top ends of the pad 1, pressure plate 2, and rubber sleeve 3 are all elliptical. The elliptical shape of the top end of the rubber sleeve 3 allows for a certain degree of deformation and ensures that the top end of the rubber sleeve 3 fits tightly against the opening, preventing leakage at gaps.

[0023] like Figure 1 and Figure 2 As shown. Both ends of the pad 1 are fixedly connected to threaded sleeves 6. The pressure plate 2 is generally elliptical in shape to fit the pad 1, and both ends of the pressure plate 2 have through holes corresponding to the threaded sleeves 6. The pressure plate 2 is fixedly connected to the pad 1 by bolts 7. First, the pad 1 is fixed by welding. Then, the pressure plate 2 and the pad 1 are locked together by bolts 7, and the top end of the rubber sleeve 3 is clamped between the pad 1 and the pressure plate 2.

[0024] like Figure 1 and Figure 2 As shown. The edge of the pad 1 is provided with an upwardly protruding limiting strip 4, and the pressure plate 2 is attached to the inner side of the limiting strip 4. By providing the limiting strip 4 on the pad 1, the pressure plate 2 can be quickly aligned with the threaded sleeve 6 during installation by means of the limiting strip 4, and then locked by the bolt 7.

[0025] In a preferred embodiment of this utility model, the top surface of the pressure plate 2 is flush with the top surface of the limiting strip 4. The limiting strip 4 ensures the structural integrity between the pressure plate 2 and the pad 1 after the pressure plate 2 is installed.

[0026] like Figure 1 As shown. The top surface of the pad 1 is provided with crisscrossing ribs 8. The ribs 8 are used to increase the strength of the pad 1 and prevent the pad 1 from deforming and causing failure to clamp the rubber sleeve 3.

[0027] In another embodiment of this utility model, the tops of the pad 1, pressure plate 2, and rubber sleeve 3 are all prismatic. A prismatic opening is made at the bottom of the flexible connection for more accurate dimensions, and the pad 1, pressure plate 2, and rubber sleeve 3 are matched with corresponding sizes to ensure accurate fit.

[0028] like Figure 1 and Figure 2 As shown. A platform 9 is provided at the edge of the connecting hole of the pad 1, and an inclined surface is provided on the inner side of the platform 9. A pressure platform 10, adapted to the platform 9, is provided at the bottom of the pressure plate 2, and a wedge-shaped surface at the bottom of the pressure platform 10 is adapted to the inclined surface on the inner side of the platform 9. By providing the platform 9 and the pressure platform 10, the inclined surface and the wedge-shaped surface provide stable clamping to the top of the rubber sleeve 3, ensuring the stability of the rubber sleeve 3 during installation.

[0029] As a preferred embodiment of this utility model, an inner support strip is provided between the top and middle of the rubber sleeve 3, and the inner support strip is embedded in the side wall of the rubber sleeve 3. The inner support strip is provided at the top of the rubber sleeve 3 to ensure the stability of the top structure of the rubber sleeve 3 and maintain a tight fit between the rubber sleeve 3 and the opening.

[0030] like Figures 1 to 3 As shown. Magnetic strips 5 are pre-embedded on both sides of the bottom of the rubber sleeve 3, and the magnetic strips 5 are evenly distributed. The magnetic strips 5 are used to ensure that the closure seam at the bottom of the rubber sleeve 3 is in a stable closed state, and the bottom of the rubber sleeve 3 remains sealed without external force.

Claims

1. An automatic drainage device for a wind turbine generator, characterized in that: It includes a pad (1), a pressure plate (2) and a rubber sleeve (3). The top of the rubber sleeve (3) is provided with a normally open end and the bottom is provided with a flexible closed slit. The top of the rubber sleeve (3) is clamped between the pad (1) and the pressure plate (2). The middle part of the pad (1) is provided with a connection port and the rubber sleeve (3) is attached to the inside of the connection port.

2. The automatic drainage device for a wind turbine as described in claim 1, characterized in that: The tops of the pad (1), pressure plate (2) and rubber sleeve (3) are all elliptical.

3. The automatic drainage device for a wind turbine as described in claim 1, characterized in that: Both ends of the pad (1) are fixedly connected with screw sleeves (6). The pressure plate (2) is an elliptical shape that is adapted to the pad (1). Both ends of the pressure plate (2) are provided with through holes corresponding to the screw sleeves (6). The pressure plate (2) is fixedly connected to the pad (1) by bolts (7).

4. The automatic drainage device for a wind turbine as described in claim 3, characterized in that: The edge of the pad (1) is provided with an upwardly protruding limiting strip (4), and the pressure plate (2) is attached to the inner side of the limiting strip (4).

5. The automatic drainage device for a wind turbine as described in claim 4, characterized in that: The top surface of the pressure plate (2) is flush with the top surface of the limiting strip (4).

6. The automatic drainage device for a wind turbine as described in claim 1, characterized in that: The top surface of the pad (1) is provided with crisscrossing ribs (8).

7. The automatic drainage device for a wind turbine as described in claim 1, characterized in that: The tops of the pad (1), pressure plate (2) and rubber sleeve (3) are all prismatic.

8. The automatic drainage device for a wind turbine as described in any one of claims 1-7, characterized in that: The edge of the connecting hole of the pad (1) is provided with a pad platform (9), and the inner side of the pad platform (9) is provided with an inclined surface. The bottom of the pressure plate (2) is provided with a pressure platform (10) adapted to the pad platform (9), and the bottom of the pressure platform (10) is provided with a wedge-shaped surface adapted to the inner inclined surface of the pad platform (9).

9. The automatic drainage device for a wind turbine as described in claim 8, characterized in that: An inner support strip is provided between the top and middle of the rubber sleeve (3), and the inner support strip is embedded in the side wall of the rubber sleeve (3).

10. The automatic drainage device for a wind turbine as described in claim 8, characterized in that: The bottom sides of the rubber sleeve (3) are pre-embedded with magnetic strips (5), which are evenly distributed.

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