Novel oil stain protection device for slip ring bearing of wind driven generator

Abstract

The invention discloses a novel wind driven generator slip ring bearing oil stain protection device, and relates to the technical field of slip ring bearings, the novel wind driven generator slip ring bearing oil stain protection device comprises a bearing inner ring, a roller is arranged on the outer wall of the bearing inner ring, a bearing outer ring is arranged on the outer wall of the roller, and the bearing inner ring is rotatably connected with the bearing outer ring through the roller; a sealing mechanism is arranged at the top of the bearing inner ring, by arranging the sealing mechanism, a sealing ring drives a fixing strip at the top to synchronously rotate with a sliding sleeve, the fixing strip drives a blade at one end to rotate, and the sliding sleeve drives an inclined scraper at one end to rotate, so that when the inclined scraper and the blade rotate, the inclined scraper rotates; by means of the structure, particles on the surfaces of the bearing inner ring and the bearing outer ring on the inner side and the outer side of the sealing ring can be rapidly scraped, and the problems that particles and dust are embedded into right-angle cracks between the sealing ring and the bearing inner ring and between the sealing ring and the bearing outer ring, the particles and the dust adhere to seeping oil dirt, viscosity is increased, and rotation blockage occurs are solved.

Description

Technical Field

[0001] The invention relates to the technical field of slip ring bearings, in particular to a novel oil pollution protection device for a slip ring bearing of a wind turbine generator. Background Art

[0002] Wind power generation refers to the conversion of wind kinetic energy into electrical energy. Wind energy is a clean, pollution-free renewable energy source that has been used by people for a long time, mainly through windmills to pump water and grind flour. People are interested in how to use wind to generate electricity; A novel wind turbine slip ring bearing oil protection device described in the patent application with announcement number CN214788653U comprises an upper protective cover, a lower protective cover, a connecting plate and a bracket; the upper protective cover is fixedly connected to the lower protective cover, the upper protective cover and the lower protective cover are both semi-circular, the upper protective cover is located above the lower protective cover, and the upper protective cover and the lower protective cover are used to be inserted into the slip ring bearing assembly; an oil port is fixedly connected to the middle position of the bottom of the lower protective cover, which is used to connect a hose to guide the collected waste oil out; the connecting plate is used to connect the upper protective cover and the lower protective cover to the bracket; the bracket is used to be connected to the brake bracket; Bearings usually do not leak internal and external lubricating oil during use. However, slip ring bearings used in wind power generation usually experience slight deformation during long-term use due to their high stress, long service life, and difficulty in replacement. This deformation causes the internal lubricating oil of the bearing slip ring to seep out, and external dust will also seep in, causing lubricating oil leakage. The leaked lubricating oil is easily mixed with external particles, resulting in the formation of viscous oil stains. Once the oil stains are attached to the leakage point, it will cause sliding blockage inside the bearing, affecting the performance of the bearing. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a novel oil pollution protection device for a wind turbine slip ring bearing, which achieves the purpose of solving the above-mentioned problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a novel wind turbine slip ring bearing oil pollution protection device, comprising a bearing inner ring, the outer wall of the bearing inner ring is provided with a roller, the outer wall of the roller is provided with a bearing outer ring, the bearing inner ring is rotatably connected with the bearing outer ring through the roller, and a sealing mechanism is provided on the top of the bearing inner ring; The sealing mechanism comprises: A sealing ring, wherein the bottom of the sealing ring is fixedly connected to the top of the bearing inner ring, the bottom of the sealing ring is not in contact with the top of the bearing outer ring, the top of the bearing outer ring is fixedly connected to a connecting ring, the top of the connecting ring is fixedly connected to a fixing ring, and the sealing ring is used to rotate synchronously with the bearing inner ring; The groove is provided in the inner wall of the connecting ring, the interior of the connecting ring is connected with the exterior of the connecting ring through the groove, and the groove is used to connect the interior of the connecting ring with the exterior to allow air to circulate.

[0005] Preferably, the sealing ring is an annular disc structure, the connecting ring is a circular ring structure, and the bottom of the fixing ring does not contact the top of the sealing ring.

[0006] Preferably, the outer wall of the sealing ring is provided with an oil removal mechanism, which includes a fixing bar, a blade is fixedly connected to one side of the fixing bar, a sliding sleeve is slidably connected to the outer wall of the fixing bar, and an inclined scraper is fixedly connected to one end of the sliding sleeve.

[0007] Preferably, one side of the inclined scraper is an inclined surface, the surface of the blade is an inclined surface, the bottom of the inclined scraper is slidably connected to the top of the bearing outer ring, and the bottom of the blade is slidably connected to the top of the bearing inner ring.

[0008] Preferably, the sealing mechanism also includes a fixed scraper block, the top of the fixed scraper block is fixedly connected to the bottom of the fixed ring, one side of the fixed scraper block is in contact with the inner wall of the sealing ring, the bottom of the fixed scraper block is in contact with the top of the bearing inner ring, and the blade is used to move the air to generate air flow when rotating.

[0009] Preferably, the fixed scraper block is an L-shaped plate structure, the inner wall of the sliding sleeve is provided with a built-in spring, one end of the built-in spring is fixedly connected to the inner wall of the sliding sleeve, and the other end of the built-in spring is fixedly connected to one end of the fixing bar.

[0010] Preferably, a protective mechanism is provided on the inner wall of the sealing ring, and the protective mechanism includes a first air hole, which is opened in the inner wall of the fixing ring, and a second air hole is provided on the inner wall of the sealing ring, and the interior of the second air hole is connected with the interior of the first air hole, and the interior of the sliding sleeve is connected with the first air hole and the second air hole through the sealing ring, and the first air hole and the second air hole are used for air communication.

[0011] Preferably, the protection mechanism further comprises a sliding rod, the outer wall of the sliding rod is slidably connected to the inner wall of the connecting ring, one end of the sliding rod is an arc surface, and the sliding rod is used to be moved by the inclined scraper to slide on the inner wall of the connecting ring.

[0012] The present invention provides a novel wind turbine slip ring bearing oil pollution protection device, which has the following beneficial effects: 1. The present invention provides a sealing mechanism. When the inner ring of the bearing rotates, the gap between the inner ring of the bearing and the outer ring of the bearing is closed by the sealing ring to achieve a sealing effect, thereby preventing dust and particles from entering the roller during rotation, causing mixing with the lubricating oil in the roller and causing the problem of oil stickiness and blockage.

[0013] 2. The present invention provides a sealing mechanism, and the sealing ring drives the top fixed bar and the sliding sleeve to rotate synchronously, and the fixed bar drives the blade at one end to rotate, and the sliding sleeve drives the inclined scraper at one end to rotate, so that when the inclined scraper and the blade rotate, the particles on the surfaces of the inner ring and the outer ring of the bearing inside and outside the sealing ring can be quickly scraped to prevent particles and dust from being embedded in the right-angle gap between the sealing ring and the inner ring and the outer ring of the bearing, resulting in adhesion with the seeping oil, increasing viscosity, and causing the problem of rotation blockage; 3. The present invention provides an oil removal mechanism. When the inclined scraper is driven to rotate by the sealing ring, one side of the inclined scraper is also an inclined surface. Therefore, when the inclined scraper rotates, the fixed scraper block rotates relative to the sealing ring, and the residue and oil will be scraped off through the inclined surface of the fixed scraper block. With the rotation and scraping of the inclined scraper, the leaked lubricating oil and the oil mixed with dust are dispersed away, and the residue on the outer ring of the sealing ring is discharged outward through the groove in the connecting ring, so as to complete the self-cleaning effect of the oil and avoid adhesion to the roller, which causes the problem of secondary pollution; 4. The present invention provides an oil removal mechanism, and the surface of the blade is an inclined surface, so that when rotating, the blade will move the air through its inclined surface, so that the fanned air is upward, and there is a gap between the fixed ring and the rotating shaft, so that the air is continuously circulated and connected to the outside, and through the air connection, the oil between the inner wall of the sealing ring and the inner ring of the bearing is thrown off the sealing ring, and the oil is quickly dried through air circulation, thereby reducing the problem of the oil adhesion causing the rotation blockage again; 5. The present invention sets a protective mechanism. After the inclined scraper is swung outward, it will start to move the sliding rod. The greater the distance the inclined scraper is swung outward, the greater the force of moving the sliding rod, and the greater the blockage of the inclined scraper and the sealing ring caused by the reaction force. This can suppress the excessive speed of the central shaft of the wind power generation to a certain extent, avoid the problem of overload and damage inside the roller caused by excessive speed, and then play a protective effect to avoid the occurrence of overload rotation.

[0014] 6. The present invention sets a protective mechanism. When the inclined scraper moves the sliding rod, the inclined scraper pushes the sliding sleeve to slide on the inner wall of the fixed strip, and squeezes the air inside the sliding sleeve to communicate with the first air hole and the second air hole inside the sealing ring, and sprays outward through the first air hole and the second air hole, thereby completing continuous jet ventilation of the outer wall and the inner wall, blowing out the oil stains attached to the sealing ring, and solidifying as the oil stains are blown away, thereby reducing the blockage problem caused by the oil stains attached to the sealing ring and the inner ring and outer ring of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2It is a schematic diagram of the disassembled structure of the present invention; Figure 3 It is a structural schematic diagram of the sealing mechanism of the present invention; Figure 4 It is a structural schematic diagram of the protection mechanism of the present invention; Figure 5 For the present invention Figure 3 A magnified image of point A; Figure 6 It is a structural schematic diagram of the oil removal mechanism of the present invention; Figure 7 It is a structural schematic diagram of the protection mechanism of the present invention; Figure 8 It is a schematic diagram of the disassembled structure of the protection mechanism of the present invention; Fig. 9 It is the motion state diagram of the protection mechanism of the present invention.

[0016] In the figure: 1 bearing inner ring, 2 sealing mechanism, 201 sealing ring, 202 fixing ring, 203 connecting ring, 204 groove, 3 degreasing mechanism, 301 fixing strip, 302 blade, 303 fixing scraper block, 304 sliding sleeve, 305 inclined scraper, 4 protection mechanism, 401 first air hole, 402 second air hole, 403 sliding rod, 5 roller, 6 bearing outer ring. DETAILED DESCRIPTION

[0017] Example 1: Please refer to Figure 1-4 The present invention provides a technical solution: a novel wind turbine slip ring bearing oil pollution protection device, comprising a bearing inner ring 1, a roller 5 is arranged on the outer wall of the bearing inner ring 1, a bearing outer ring 6 is arranged on the outer wall of the roller 5, the bearing inner ring 1 is rotatably connected with the bearing outer ring 6 through the roller 5, and a sealing mechanism 2 is arranged on the top of the bearing inner ring 1; The sealing mechanism 2 comprises: A sealing ring 201, wherein the bottom of the sealing ring 201 is fixedly connected to the top of the bearing inner ring 1, and the bottom of the sealing ring 201 does not contact the top of the bearing outer ring 6. A connecting ring 203 is fixedly connected to the top of the bearing outer ring 6, and a fixing ring 202 is fixedly connected to the top of the connecting ring 203. The sealing ring 201 is used to rotate synchronously with the bearing inner ring 1; The groove 204 is formed in the inner wall of the connecting ring 203 . The interior of the connecting ring 203 is connected to the exterior of the connecting ring 203 via the groove 204 . The groove 204 is used to connect the interior of the connecting ring 203 with the exterior to allow air to circulate.

[0018] The sealing ring 201 is an annular disc structure, the connecting ring 203 is a circular ring structure, and the bottom of the fixing ring 202 does not contact the top of the sealing ring 201; When in use, the inner wall of the bearing inner ring 1 is connected to the rotating shaft, and the bearing inner ring 1 is rotatably connected to the bearing outer ring 6 through the roller 5, and the bearing outer ring 6 is connected to an external fixing member, so that when the rotating shaft inside the bearing inner ring 1 rotates, it rotates relative to the bearing outer ring 6; When the inner ring 1 of the bearing rotates, the gap between the inner ring 1 of the bearing and the outer ring 6 of the bearing is sealed by the sealing ring 201 to achieve a sealing effect, thereby preventing dust and particles from entering the roller 5 during rotation, causing mixing with the lubricating oil in the roller 5 and causing the problem of oil stickiness and blockage; Example 2: Please refer to Figure 1-6 On the basis of the first embodiment, the present invention provides a technical solution: the outer wall of the sealing ring 201 is provided with an oil removal mechanism 3, the oil removal mechanism 3 includes a fixing bar 301, one side of the fixing bar 301 is fixedly connected with a blade 302, the outer wall of the fixing bar 301 is slidably connected with a sliding sleeve 304, and one end of the sliding sleeve 304 is fixedly connected with an inclined scraper 305.

[0019] One side of the inclined scraper 305 is an inclined surface, the surface of the blade 302 is an inclined surface, the bottom of the inclined scraper 305 is slidably connected to the top of the bearing outer ring 6, and the bottom of the blade 302 is slidably connected to the top of the bearing inner ring 1.

[0020] The sealing mechanism 2 also includes a fixed scraper block 303, the top of which is fixedly connected to the bottom of the fixed ring 202, one side of which is in contact with the inner wall of the sealing ring 201, and the bottom of which is in contact with the top of the bearing inner ring 1. The blade 302 is used to move the air to generate air flow when rotating.

[0021] The fixed scraper block 303 is an L-shaped plate structure, and the inner wall of the sliding sleeve 304 is provided with an internal spring, one end of the internal spring is fixedly connected to the inner wall of the sliding sleeve 304, and the other end of the internal spring is fixedly connected to one end of the fixing bar 301; When the inner ring 1 of the bearing rotates, it will drive the sealing ring 201 on the top to rotate synchronously, and the sealing ring 201 will drive the fixing bar 301 and the sliding sleeve 304 on the top to rotate synchronously, and the fixing bar 301 drives the blade 302 at one end to rotate, and the sliding sleeve 304 drives the inclined scraper 305 at one end to rotate, so that when the inclined scraper 305 and the blade 302 rotate, the particles on the surface of the inner ring 1 and the outer ring 6 of the bearing inside and outside the sealing ring 201 can be quickly scraped to prevent particles and dust from being embedded in the right-angle gap between the sealing ring 201 and the inner ring 1 and the outer ring 6 of the bearing, which will cause the particles and dust to adhere to each other with the seeping oil, resulting in increased viscosity and the problem of rotation blockage; When the inclined scraper 305 is driven to rotate by the sealing ring 201, one side of the inclined scraper 305 is also an inclined surface. Therefore, when the inclined scraper 305 rotates, the fixed scraper block 303 rotates relative to the sealing ring 201, and the residue and oil stains are scraped off through the inclined surface of the fixed scraper block 303. With the rotation and scraping of the inclined scraper 305, the leaked lubricating oil and the oil stains mixed with dust are scattered away from 306, and the residues on the outer ring of the sealing ring 201 are discharged outward through the groove 204 in the connecting ring 203, completing the self-cleaning effect of the oil stains, and avoiding the adhesion to the roller 5, which causes the problem of secondary pollution; The surface of the blade 302 is an inclined surface, so when rotating, the blade 302 will move the air through its inclined surface, so that the fanned air is upward, and there is a gap between the fixed ring 202 and the rotating shaft, so that the air is continuously circulated and connected to the outside, and through the air connection, the oil stains between the inner wall of the sealing ring 201 and the inner ring 1 of the bearing are thrown off the sealing ring 201, and the oil stains are quickly dried by air circulation, thereby reducing the problem of the oil stains adhering to the sealing ring 201 and causing the rotation to be blocked again; Example 3: Please refer to Figure 1-9 On the basis of the first and second embodiments, the present invention provides a technical solution: a protection mechanism 4 is provided on the inner wall of the sealing ring 201, and the protection mechanism 4 includes a first air hole 401, and the first air hole 401 is opened in the inner wall of the fixing ring 202. The inner wall of the sealing ring 201 is provided with a second air hole 402, and the interior of the second air hole 402 is connected with the interior of the first air hole 401, and the interior of the sliding sleeve 304 is connected with the first air hole 401 and the second air hole 402 through the sealing ring 201, and the first air hole 401 and the second air hole 402 are used for air communication.

[0022] The protection mechanism 4 further includes a sliding rod 403, the outer wall of the sliding rod 403 is slidably connected to the inner wall of the connecting ring 203, one end of the sliding rod 403 is an arc surface, and the sliding rod 403 is used to be moved by the inclined scraper 305 to slide on the inner wall of the connecting ring 203; As the speed of the shaft in the wind turbine increases, the sealing ring 201 also increases synchronously, and drives the inclined scraper 305 to accelerate and swing outward. When the inclined scraper 305 is driven by the sealing ring 201 to rotate faster, it drives the sliding sleeve 304 to slide on the outer wall of the fixed bar 301 and overcome the elastic force of the built-in spring in the inner wall of the sliding sleeve 304, thereby swinging outward. After the inclined scraper 305 is thrown outward, it will start to move to the sliding rod 403. The greater the distance that the inclined scraper 305 is thrown outward, the greater the force of moving the sliding rod 403, and the greater the blockage of the inclined scraper 305 and the sealing ring 201 caused by the reaction force, so that the excessive speed of the central shaft of the wind turbine can be suppressed to a certain extent, and the problem of overload and damage inside the roller 5 caused by excessive speed can be avoided, and then it also has a protective effect to avoid the occurrence of overload rotation. As the inclined scraper 305 moves the sliding rod 403, the inclined scraper 305 pushes the sleeve 304 to slide on the inner wall of the fixed strip 301, and squeezes the air inside the sleeve 304 to communicate with the first air hole 401 and the second air hole 402 inside the sealing ring 201, and sprays outward through the first air hole 401 and the second air hole 402, completing the continuous jet ventilation of the outer wall and the inner wall of 205, blowing out the oil stains attached to the sealing ring 201, and solidifying as it dries after being blown away, reducing the problem of blockage caused by the oil stains attached to the sealing ring 201 and the bearing inner ring 1 and the bearing outer ring 6.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel wind turbine slip ring bearing oil pollution protection device, comprising a bearing inner ring (1), the outer wall of the bearing inner ring (1) is provided with a roller (5), the outer wall of the roller (5) is provided with a bearing outer ring (6), the bearing inner ring (1) is rotatably connected to the bearing outer ring (6) via the roller (5), and is characterized in that: A sealing mechanism (2) is provided on the top of the bearing inner ring (1); The sealing mechanism (2) comprises: A sealing ring (201), wherein the bottom of the sealing ring (201) is fixedly connected to the top of the bearing inner ring (1), the bottom of the sealing ring (201) is not in contact with the top of the bearing outer ring (6), the top of the bearing outer ring (6) is fixedly connected to a connecting ring (203), the top of the connecting ring (203) is fixedly connected to a fixing ring (202), and the sealing ring (201) is used to rotate synchronously with the bearing inner ring (1); A groove (204) is provided in the inner wall of the connecting ring (203); the interior of the connecting ring (203) is connected to the exterior of the connecting ring (203) via the groove (204); the groove (204) is used to allow the interior of the connecting ring (203) to be connected to the exterior to allow air to circulate.

2. According to claim 1, a novel wind turbine slip ring bearing oil pollution protection device is characterized in that: The sealing ring (201) is an annular disc structure, the connecting ring (203) is a circular ring structure, and the bottom of the fixing ring (202) does not contact the top of the sealing ring (201).

3. According to claim 2, a novel wind turbine slip ring bearing oil pollution protection device is characterized in that: The outer wall of the sealing ring (201) is provided with an oil removal mechanism (3), the oil removal mechanism (3) comprising a fixing bar (301), one side of the fixing bar (301) being fixedly connected to a blade (302), the outer wall of the fixing bar (301) being slidably connected to a sliding sleeve (304), and one end of the sliding sleeve (304) being fixedly connected to an inclined scraper (305).

4. According to claim 3, a novel wind turbine slip ring bearing oil pollution protection device is characterized in that: One side of the inclined scraper (305) is an inclined surface, the surface of the blade (302) is an inclined surface, the bottom of the inclined scraper (305) is slidably connected to the top of the bearing outer ring (6), and the bottom of the blade (302) is slidably connected to the top of the bearing inner ring (1).

5. According to claim 4, a novel wind turbine slip ring bearing oil pollution protection device is characterized in that: The sealing mechanism (2) further comprises a fixed scraper block (303), the top of the fixed scraper block (303) being fixedly connected to the bottom of the fixed ring (202), one side of the fixed scraper block (303) being in contact with the inner wall of the sealing ring (201), the bottom of the fixed scraper block (303) being in contact with the top of the bearing inner ring (1), and the blade (302) being used to move air when rotating to generate air flow.

6. The novel wind turbine slip ring bearing oil pollution protection device according to claim 5 is characterized by: The fixed scraper block (303) is an L-shaped plate structure, and the inner wall of the sliding sleeve (304) is provided with an internal spring, one end of the internal spring is fixedly connected to the inner wall of the sliding sleeve (304), and the other end of the internal spring is fixedly connected to one end of the fixing strip (301).

7. The novel wind turbine slip ring bearing oil pollution protection device according to claim 6 is characterized by: The inner wall of the sealing ring (201) is provided with a protection mechanism (4), the protection mechanism (4) comprising a first air hole (401), the first air hole (401) being opened in the inner wall of the fixing ring (202), the inner wall of the sealing ring (201) being provided with a second air hole (402), the interior of the second air hole (402) being connected to the interior of the first air hole (401), the interior of the sliding sleeve (304) being connected to the interiors of the first air hole (401) and the second air hole (402) through the sealing ring (201), the first air hole (401) and the second air hole (402) being used for air communication.

8. The novel wind turbine slip ring bearing oil pollution protection device according to claim 7 is characterized by: The protection mechanism (4) further comprises a sliding rod (403), the outer wall of the sliding rod (403) being slidably connected to the inner wall of the connecting ring (203), one end of the sliding rod (403) being an arc surface, and the sliding rod (403) being used to be moved by the inclined scraper (305) to slide on the inner wall of the connecting ring (203).

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