Bearing sealing structure of semi-direct-driven wind driven generator

Abstract

The bearing sealing structure comprises a machine base and further comprises a driving assembly, and a generator bearing is embedded in the inner wall of the front face of the machine base. As the service time is prolonged, gravel adheres to the joint of the outer side of the fan shaft and the protection arc plate, at the moment, the gravel needs to be cleaned and protected, it is avoided that the gravel drills into the inner side of the protection arc plate, the sealing performance of the protection arc plate is reduced, an electric telescopic rod on a supporting frame is controlled to work, and the protection arc plate is separated from the outer side of the machine base; at the moment, an elastic wall scraping plate makes contact with the outer wall of the machine base and scrapes the outer wall of the machine base, a first spring on a fan-shaped cover plate recovers in elasticity, an auxiliary pulley on a telescopic frame makes contact with the outer wall of the machine base, and after the auxiliary pulley is separated from the outer wall of the machine base, the elastic wall scraping plate recovers in elasticity and makes the elastic wall scraping plate shake; sand and stones scraped by the elastic wall scraping plate are shaken off, so that the device can clean the sand and stones on the outer wall of the machine base.

Description

Technical Field

[0001] The invention relates to the technical field of wind engines, in particular to a bearing sealing structure of a semi-direct-drive wind generator. Background Art

[0002] A semi-direct-drive wind turbine uses a cleverly designed planetary gear to increase the speed of the generator rotor, and then uses a gearbox to drive a medium-speed permanent magnet generator to generate electricity, which is then fed to the grid through a full-power converter. It is a wind turbine set that is between direct drive and double-fed. The speed regulation of the gearbox is not as high as that of the double-fed, and the generator has also changed from a double-fed winding type to a permanent magnet synchronous type, which improves the reliability and service life of the gearbox. At the same time, compared to a direct-drive generator, it can take into account the corresponding generator design and improve the design and manufacturing conditions of high-power direct-drive generators.

[0003] Chinese patent application number CN202211451712.6 discloses a semi-direct-drive wind turbine bearing sealing structure. Although the application has achieved the goal of improving the reliability of bearing sealing and avoiding bearing oil leakage and oil mist overflow, in actual work, semi-direct-drive wind turbines are generally set at high places with strong winds. At this time, some mud and sand carried by the air rises and contacts the outer side of the bearing of the semi-direct-drive wind turbine. In order to ensure the operation of the device, the bearing needs to be sealed and protected to prevent wind and sand from entering the bearing and reducing the service life of the bearing. Improvements are needed to address this problem. Summary of the invention

[0004] The object of the present invention is to provide a semi-direct drive wind turbine bearing sealing structure to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a semi-direct drive wind turbine bearing sealing structure, comprising a machine base and a driving assembly, wherein a generator bearing is embedded in the front inner wall of the machine base, a sealing cover is rotatably connected to the front of the generator bearing, and a fan shaft is arranged on the inner ring of the generator bearing.

[0006] Wherein, the driving component comprises: A protective shell, the protective shell is fixedly connected to the front of the machine base and is located in front of the sealing cover, a support frame is fixedly connected to the front of the machine base, and the support frame is located on the left and right sides of the protective shell, an electric telescopic rod is fixedly connected to the front of the support frame, the electric telescopic rod has a telescopic end, the telescopic end of the electric telescopic rod is fixedly connected to a slide, the slide is fixedly connected to a driving frame on the side close to the outer wall of the protective shell, the middle part of the driving frame is rotatably connected to a driving plate, the side of the driving plate away from the driving frame is rotatably connected to a driven frame, a fan-shaped cover plate is fixedly connected to the back of the driven frame, a positioning frame is fixedly connected to the middle part of the left and right sides of the front of the protective shell, and a flip block is rotatably connected to the middle part of the positioning frame.

[0007] According to the above technical solution, a sealing ring 1 is arranged on the back of the fan-shaped cover plate, and a sealing ring 2 corresponding to the sealing ring 1 is arranged on the front inner wall of the protective shell. The sealing ring 1 and the sealing ring 2 cooperate to seal the inside of the protective shell.

[0008] According to the above technical solution, guide rods are provided at the top and bottom of the back side of the support frame, and a fixed support plate is fixedly connected to the rear end of the guide rod. The fixed support plate is fixedly connected to the inner wall of the support frame on the side away from the protective shell, and a sliding hole corresponding to the guide rod is opened in the slide plate. The slide plate is slidably connected to the guide rod through the sliding hole, and the slide plate slides back and forth on the outside of the guide rod.

[0009] According to the above technical scheme, it also includes a wall cleaning component, which is composed of a protective arc plate, an elastic scraper plate, a spring, a telescopic frame, and an auxiliary pulley. The protective arc plate is fixedly connected to the front side of the fan-shaped cover plate, the elastic scraper plate is fixedly connected to the inner side of the protective arc plate, the spring is fixedly connected to the inner side of the fan-shaped cover plate, the telescopic frame is fixedly connected to one end of the spring away from the fan-shaped cover plate, and the auxiliary pulley is rotatably connected to the inner side of the telescopic frame.

[0010] According to the above technical solution, the auxiliary pulley is slidably connected to the outer wall of the machine base at the side away from the telescopic frame, and the auxiliary pulley slides on the outer wall of the machine base to guide the moving direction of the fan-shaped cover plate.

[0011] According to the above technical solution, it also includes a maintenance component, which consists of an airbag, a connecting pipe, a drive box, a second spring, a piston plate, and a guide tube. The airbag is fixedly connected to the back of the support frame, the connecting pipe is fixedly connected to the outside of the airbag, the drive box is fixedly connected to the top of the front of the base, the second spring is fixedly connected to the top inside the drive box, the piston plate is fixedly connected to the bottom end of the second spring, and the guide tube is fixedly connected to the middle of the bottom of the drive box.

[0012] According to the above technical solution, a fixing hole one is opened on the top of the protective shell, a fixing hole two is opened on the top of the front side of the sealing cover, the end of the guide tube away from the drive box passes through the fixing hole one and extends to the front side of the sealing cover and is fixedly connected to the top of the front side of the sealing cover, and the guide tube is connected to the inside of the generator bearing through the fixing hole two, and a pressure valve is arranged on the top of the guide tube.

[0013] According to the above technical solution, the telescopic end of the electric telescopic rod passes through the front of the support frame, the back of the support frame and the middle of the airbag and extends to the back of the airbag and is fixedly connected to the skateboard. The back of the flip block is fixedly connected to the front of the fan-shaped cover plate.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention can protect the inside of the generator bearing by providing a sealing cover, and when wind and sand pass through the outer wall of the protective arc plate, the outer wall of the protective arc plate is in an inclined shape, which makes it difficult for the wind and sand to adhere to the surface of the protective arc plate. At the same time, the outer side of the generator bearing can be directly protected by providing the protective arc plate and the protective shell, so as to prevent the wind and sand from damaging the generator bearing; As the use time increases, sand and stones adhere to the interface between the outer side of the fan shaft and the protective arc plate. At this time, it is necessary to clean and protect the sand and stones to prevent them from drilling into the inner side of the protective arc plate and reducing the sealing of the protective arc plate. The electric telescopic rod on the support frame is controlled to work, so that the fan-shaped cover plate is turned around the turning block through the positioning frame. At the same time, the elastic scraper plate scrapes the outer wall of the base to clean the outer wall of the base. When the spring on the fan-shaped cover plate is elastically restored, the auxiliary pulley on the telescopic frame contacts the outer wall of the machine base, causing the elastic scraper plate to vibrate, and the sand and gravel scraped off by the elastic scraper plate is shaken off, so that the device can clean the sand and gravel on the outer wall of the machine base; When the electric telescopic rod is working, it drives the slide plate to move forward, and the slide plate squeezes the airbag, so that the lubricating oil on the lower side of the drive box is introduced into the generator bearing through the pressure valve at the top of the guide pipe under the push of the piston plate. The device can fill the lubricating oil inside the generator bearing while cleaning the outer wall of the base, and the device can perform maintenance work on the inside of the generator bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of an explosion at the sealing cover of the present invention; Figure 3 It is a schematic diagram of the flip block of the present invention; Figure 4 yes Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 It is a schematic diagram of the elastic scraper plate of the present invention; Figure 6 It is a schematic diagram of the explosion of the driving plate of the present invention; Figure 7 yes Figure 6 The enlarged schematic diagram of point B in the middle; Figure 8 It is a schematic diagram of spring two of the present invention.

[0016] In the figure: 1. base; 2. generator bearing; 3. sealing cover; 4. fan shaft; 5. drive assembly; 501. protective shell; 502. support frame; 503. electric telescopic rod; 504. slide plate; 505. drive frame; 506. drive plate; 507. driven frame; 508. fan-shaped cover plate; 509. positioning frame; 510. flip block; 6. wall cleaning assembly; 601. protective arc plate; 602. elastic scraper plate; 603. spring one; 604. telescopic frame; 605. auxiliary pulley; 7. maintenance assembly; 701. air bag; 702. connecting pipe; 703. drive box; 704. spring two; 705. piston plate; 706. guide pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] For example, see Figure 1-7 The present invention provides a technical solution: a semi-direct drive wind turbine bearing sealing structure, including a base 1 and a driving assembly 5. A generator bearing 2 is embedded in the front inner wall of the base 1, a sealing cover 3 is rotatably connected to the front of the generator bearing 2, and a fan shaft 4 is arranged on the inner ring of the generator bearing 2.

[0019] Wherein, the driving component 5 comprises: A protective shell 501 is fixedly connected to the front of the base 1 and is located in front of the sealing cover 3. A support frame 502 is fixedly connected to the front of the base 1, and the support frame 502 is located on the left and right sides of the protective shell 501. An electric telescopic rod 503 is fixedly connected to the front of the support frame 502. The electric telescopic rod 503 has a telescopic end. A slide plate 504 is fixedly connected to the telescopic end of the electric telescopic rod 503. A driving frame 505 is fixedly connected to the side of the slide plate 504 close to the outer wall of the protective shell 501. A driving plate 506 is rotatably connected to the middle of the driving frame 505. A driven frame 507 is rotatably connected to the side of the driving plate 506 away from the driving frame 505. A fan-shaped cover plate 508 is fixedly connected to the back of the driven frame 507. A positioning frame 509 is fixedly connected to the middle of the left and right sides of the front of the protective shell 501. A flip block 510 is rotatably connected to the middle of the positioning frame 509.

[0020] A sealing ring 1 is arranged on the back of the fan-shaped cover plate 508 , and a sealing ring 2 corresponding to the sealing ring 1 is arranged on the front inner wall of the protective shell 501 .

[0021] Guide rods are provided at the top and bottom of the back side of the support frame 502, and a fixed support plate is fixedly connected to the rear end of the guide rod. The fixed support plate is fixedly connected to the inner wall of the support frame 502 on the side away from the protective shell 501, and a sliding hole corresponding to the guide rod is opened in the slide plate 504, and the slide plate 504 is slidably connected to the guide rod through the sliding hole.

[0022] The electric telescopic rod 503 on the support frame 502 is controlled to work, so that the electric telescopic rod 503 drives the slide plate 504 to move forward during work. As the slide plate 504 moves forward, the driving frame 505 on the slide plate 504 pulls the internal driving plate 506, so that the driving plate 506 pulls the driven frame 507. At this time, the fan-shaped cover plate 508 on the lower side of the driven frame 507 is subjected to force. Since the front side of the fan-shaped cover plate 508 is rotatably connected to the flip block 510 on the protective shell 501 through the positioning frame 509, the fan-shaped cover plate 508 is flipped around the flip block 510 through the positioning frame 509, so that the fan-shaped cover plate 508 is flipped close to one side of the support frame 502.

[0023] It also includes a wall cleaning component 6, which consists of a protective arc plate 601, an elastic scraper plate 602, a spring 1 603, a telescopic frame 604, and an auxiliary pulley 605. The protective arc plate 601 is fixedly connected to the front of the fan-shaped cover plate 508, the elastic scraper plate 602 is fixedly connected to the inner side of the protective arc plate 601, the spring 1 603 is fixedly connected to the inner side of the fan-shaped cover plate 508, the telescopic frame 604 is fixedly connected to one end of the spring 1 603 away from the fan-shaped cover plate 508, and the auxiliary pulley 605 is rotatably connected to the inner side of the telescopic frame 604.

[0024] The auxiliary pulley 605 is slidably connected to the outer wall of the base 1 at a side away from the telescopic frame 604 .

[0025] By setting the sealing cover 3, the inside of the generator bearing 2 can be protected. By setting the protective arc plate 601, the protective arc plate 601 can be attached to the outside of the base 1. When wind and sand pass through the outer wall of the protective arc plate 601, the outer wall of the protective arc plate 601 is inclined, which makes it difficult for the wind and sand to adhere to the surface of the protective arc plate 601. At the same time, by setting the protective arc plate 601 and the protective shell 501, the outside of the generator bearing 2 can be directly protected to prevent the wind and sand from causing damage to the generator bearing 2.

[0026] As the use time increases, sand and stones adhere to the interface between the outer side of the fan shaft 4 and the protective arc plate 601. At this time, it is necessary to clean and protect the sand and stones to prevent the sand and stones from drilling into the inner side of the protective arc plate 601 and reducing the sealing of the protective arc plate 601. When flipping, the protective arc plate 601 is separated from the outer side of the base 1. At this time, the elastic scraper plate 602 contacts the outer wall of the base 1 and makes the elastic scraper plate 602 scrape the outer wall of the base 1. At this time, the spring 1 603 on the fan-shaped cover plate 508 elastically recovers, so that the auxiliary pulley 605 on the telescopic frame 604 contacts the outer wall of the base 1 and makes the auxiliary pulley 605 slide on the outer wall of the base 1. When the auxiliary pulley 605 is separated from the outer wall of the base 1, the elastic scraper plate 602 elastically recovers and makes the elastic scraper plate 602 shake to shake off the sand and stones scraped off by the elastic scraper plate 602, so that the device can clean the sand and stones on the outer wall of the base 1.

[0027] For example 2, please refer to Figure 1-8 The present invention provides a technical solution: it also includes a maintenance component 7, which consists of an airbag 701, a connecting pipe 702, a drive box 703, a spring 2 704, a piston plate 705, and a guide tube 706. The airbag 701 is fixedly connected to the back of the support frame 502, the connecting pipe 702 is fixedly connected to the outside of the airbag 701, the drive box 703 is fixedly connected to the top of the front of the base 1, the spring 2 704 is fixedly connected to the top inside the drive box 703, the piston plate 705 is fixedly connected to the bottom of the spring 2 704, and the guide tube 706 is fixedly connected to the middle of the bottom of the drive box 703.

[0028] A fixing hole one is opened at the top of the protective shell 501, and a fixing hole two is opened at the top of the front side of the sealing cover 3. The end of the guide tube 706 away from the drive box 703 passes through the fixing hole one and extends to the front side of the sealing cover 3 and is fixedly connected to the top of the front side of the sealing cover 3. The guide tube 706 is connected to the inside of the generator bearing 2 through the fixing hole two, and a pressure valve is arranged at the top of the guide tube 706.

[0029] The telescopic end of the electric telescopic rod 503 passes through the front of the support frame 502, the back of the support frame 502 and the middle of the airbag 701 and extends to the back of the airbag 701 and is fixedly connected to the slide plate 504. The back of the flip block 510 is fixedly connected to the front of the fan-shaped cover plate 508.

[0030] When the electric telescopic rod 503 is working, the electric telescopic rod 503 drives the slide plate 504 to move forward, and the slide plate 504 squeezes the airbag 701. When the airbag 701 is compressed, the air in the airbag 701 is introduced into the drive box 703 through the connecting pipe 702, so that the pressure at the top of the drive box 703 increases and the spring 2 704 is stretched. At the same time, the spring 2 704 pushes the piston plate 705 downward, so that the lubricating oil on the lower side of the drive box 703 is introduced into the generator bearing 2 through the pressure valve at the top of the guide pipe 706 under the push of the piston plate 705. The internal pressure valve can be used to push the piston plate 705 to push the lubricating oil into the generator bearing 2. When the device cleans the outer wall of the base 1, the internal pressure valve of the generator bearing 2 can be filled with lubricating oil, so that the device can perform maintenance work on the internal pressure valve of the generator bearing 2.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semi-direct drive wind turbine bearing seal structure, comprising a base (1), characterized in that: It also comprises a drive assembly (5), wherein a generator bearing (2) is embedded in the front inner wall of the base (1), a sealing cover (3) is rotatably connected to the front of the generator bearing (2), and a fan shaft (4) is arranged on the inner ring of the generator bearing (2); Wherein, the driving component (5) comprises: The protective shell (501) is fixedly connected to the front of the machine base (1) and is located in front of the sealing cover (3). The front of the machine base (1) is fixedly connected to a support frame (502), and the support frame (502) is located on the left and right sides of the protective shell (501). The front of the support frame (502) is fixedly connected to an electric telescopic rod (503), the electric telescopic rod (503) has a telescopic end, the telescopic end of the electric telescopic rod (503) is fixedly connected to a slide plate (504), and the slide plate (504) is fixedly connected to a driving frame (505) on a side close to the outer wall of the protective shell (501). The driving frame A driving plate (506) is rotatably connected to the middle of the inner portion of (505); a driven frame (507) is rotatably connected to the side of the driving plate (506) away from the driving frame (505); a fan-shaped cover plate (508) is fixedly connected to the back of the driven frame (507); a positioning frame (509) is fixedly connected to the middle of the left and right sides of the front of the protective shell (501); a flip block (510) is rotatably connected to the inner middle of the positioning frame (509); the electric telescopic rod (503) is used to drive the slide plate (504) to move forward and backward; and a protective arc plate (601) is fixedly connected to the front of the fan-shaped cover plate (508).

2. A semi-direct drive wind turbine bearing sealing structure according to claim 1, characterized in that: The back of the fan-shaped cover plate (508) is provided with a sealing ring 1, and the front inner wall of the protective shell (501) is provided with a sealing ring 2 corresponding to the sealing ring 1, and the sealing ring 1 and the sealing ring 2 cooperate to seal the interior of the protective shell (501).

3. A semi-direct drive wind turbine bearing sealing structure according to claim 2, characterized in that: The top and bottom of the back side of the support frame (502) are both provided with guide rods, the rear end of the guide rod is fixedly connected to a fixed support plate, the fixed support plate is fixedly connected to the inner wall of the support frame (502) at a side away from the protective shell (501), a sliding hole corresponding to the guide rod is opened in the slide plate (504), the slide plate (504) is slidably connected to the guide rod through the sliding hole, and the slide plate (504) slides back and forth on the outside of the guide rod.

4. A semi-direct drive wind turbine bearing sealing structure according to claim 3, characterized in that: The invention also comprises a wall cleaning component (6), wherein the wall cleaning component (6) is composed of an elastic wall scraping plate (602), a spring 1 (603), a telescopic frame (604), and an auxiliary pulley (605), wherein the elastic wall scraping plate (602) is fixedly connected to the inner side of the protective arc plate (601), the spring 1 (603) is fixedly connected to the inner side of the fan-shaped cover plate (508), the telescopic frame (604) is fixedly connected to an end of the spring 1 (603) away from the fan-shaped cover plate (508), and the auxiliary pulley (605) is rotatably connected to the inner side of the telescopic frame (604).

5. A semi-direct drive wind turbine bearing sealing structure according to claim 4, characterized in that: The auxiliary pulley (605) is slidably connected to the outer wall of the machine base (1) at a side away from the telescopic frame (604). The auxiliary pulley (605) slides on the outer wall of the machine base (1) to guide the moving direction of the fan-shaped cover plate (508).

6. A semi-direct drive wind turbine bearing sealing structure according to claim 5, characterized in that: The machine also includes a maintenance component (7), the maintenance component (7) consisting of an airbag (701), a connecting pipe (702), a drive box (703), a second spring (704), a piston plate (705), and a flow guide tube (706), the airbag (701) being fixedly connected to the back of the support frame (502), the connecting pipe (702) being fixedly connected to the outside of the airbag (701), the drive box (703) being fixedly connected to the top of the front of the base (1), the second spring (704) being fixedly connected to the top of the drive box (703), the piston plate (705) being fixedly connected to the bottom of the second spring (704), and the flow guide tube (706) being fixedly connected to the middle of the bottom of the drive box (703).

7. A semi-direct drive wind turbine bearing sealing structure according to claim 6, characterized in that: A fixing hole 1 is provided at the top of the protective shell (501), a fixing hole 2 is provided at the top of the front face of the sealing cover (3), an end of the guide tube (706) away from the drive box (703) passes through the fixing hole 1 and extends to the front face of the sealing cover (3) to be fixedly connected to the top of the front face of the sealing cover (3), and the guide tube (706) is connected to the inside of the generator bearing (2) through the fixing hole 2, and a pressure valve is provided at the top of the guide tube (706) to control the opening and closing of the airflow.

8. A semi-direct drive wind turbine bearing sealing structure according to claim 7, characterized in that: The telescopic end of the electric telescopic rod (503) penetrates the front of the support frame (502), the back of the support frame (502) and the middle of the airbag (701) and extends to the back of the airbag (701) to be fixedly connected to the slide plate (504). The back of the flipping block (510) is fixedly connected to the front of the fan-shaped cover plate (508). When the flipping block (810) rotates, it synchronously drives the fan-shaped cover plate (508) to flip.

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