A main bearing seat of a wind turbine for suppressing wind rotor vibration transmission

Abstract

The present invention discloses a main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration, and relates to the technical field of bearing seats, comprising a slide rail, both ends of the slide rail are fixedly connected with a first limit block, the surface of the slide rail is slidably connected with the main bearing seat of the wind turbine set, the surface of the first limit block is fixedly connected with a buffer block, a first buffer cavity is provided inside the buffer block, a second buffer cavity is provided inside the first buffer cavity, and a first spring rod is fixedly connected to the inner wall of the first buffer cavity. According to the present invention, the main bearing seat of the wind turbine set can be moved, which is convenient for installation and disassembly, and vibration reduction measures are taken at the front and back respectively, which effectively reduces the influence of the wind rotor vibration on the nacelle and the tower, and at the same time, weakens the vibration load of the wind turbine, and during the vibration reduction process, the heat dissipation device can keep the temperature of the vibration reduction equipment within a safe range, effectively avoids the occurrence of thermal decay, ensures the buffering effect of the device, and improves the service life of the bearing seat.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing seats, and in particular to a main bearing seat of a wind turbine set for suppressing the transmission of wind wheel vibration. Background Art

[0002] The bearing seat is used to allow the shaft to rotate along the circumference and support the shaft. The conventional usage is two or more bearings, whose function is to allow the shaft to operate normally, and the bearing seat is used to support the bearing, fix the outer ring of the bearing, and only allow the inner ring to rotate, while the outer ring remains stationary, always consistent with the direction of transmission, and maintains balance. Bearings are an important component in contemporary mechanical equipment. The publication number is CN112032197A, which relates to the field of bearing seats, and in particular discloses a sliding bearing seat, including a bearing seat body, a protective shell is provided on the upper end outer surface of the bearing seat body, a clamping sleeve is provided on the inner outer surface of the protective shell, a bearing outer ring is provided on the rear end outer surface of the clamping sleeve, and a No. 1 ball is provided on the inner outer surface of the bearing outer ring. The sliding bearing seat is provided with a slide rail, and the upper outer surface of the slide rail and the upper outer surface of the bearing seat use corresponding through holes. The bearing seat is installed on the machine through the slide rail, which is conducive to adjusting the position of the bearing seat, and the bearing seat is fixed by clamping nails in the through holes. The components with connecting plates, connecting columns, pressing plates and springs are conducive to shock absorption of the bearing seat when the bearing seat is working, and a No. 1 hexagonal bolt is arranged at one end of the slide rail, which can not only fix the slide rail together with the bearing seat body on the machine, but also facilitate disassembly of the bearing seat body for inspection or replacement.

[0003] The existing main bearing seats of wind turbines are all fixed on the base of the nacelle. The main bearing seats of wind turbines cannot be moved, and are inconvenient to install and disassemble. Therefore, a large amount of labor is needed to install or disassemble the main bearing seats of wind turbines, which increases the cost of use. During use, the vibration of the wind rotor will be transmitted to the main bearing seat of the wind turbine. Since the main bearing seat of the wind turbine is fixed on the base of the nacelle, the vibration is directly transmitted to the nacelle, which has a certain impact on the nacelle. At the same time, severe vibration will affect the operation of the wind turbine. Therefore, a main bearing seat of wind turbine for suppressing the transmission of wind rotor vibration is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that it is inconvenient to use and cannot suppress the transmission of wind rotor vibration, and to propose a main bearing seat of a wind turbine set that suppresses the transmission of wind rotor vibration.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration, a main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration, comprising a slide rail, two ends of the slide rail are fixedly connected with a first limit block, the surface of the slide rail is slidably connected with the main bearing seat of the wind turbine set, the surface of the first limit block is fixedly connected with a buffer block, a first buffer cavity is provided inside the buffer block, a second buffer cavity is provided inside the first buffer cavity, a first spring rod is fixedly connected to the inner side wall of the first buffer cavity, a buffer rod is slidably connected inside the buffer block, a sliding plug is fixedly sleeved on the surface of the buffer rod, a flow hole is provided on the sliding plug, a first magnet is fixedly connected to the top of the sliding plug, a fixed block is fixedly connected to the top of the buffer block, the other end of the fixed block is fixedly connected to a water tank, a heat dissipation pipe is fixedly connected to the bottom end of the water tank, a transmission mechanism is fixedly connected to the surface of the heat dissipation pipe, a gear is fixedly connected to the left end of the second rotating shaft, an impeller is fixedly connected to the right end of the second rotating shaft, and a meshing mechanism is rotatably connected to the inner side wall of the line roller.

[0007] Preferably, the left end of the buffer rod is fixedly connected to the first spring rod, a sealing plug is slidably sleeved on the surface of the buffer rod, and the surface of the sealing plug is fixedly connected to the buffer block.

[0008] Preferably, the right end of the buffer rod is in close contact with the main bearing seat of the wind turbine generator set.

[0009] Preferably, the water tank is filled with coolant.

[0010] Preferably, the heat dissipation pipe is wound around the surface of the buffer block, and the other end of the heat dissipation pipe is fixedly connected to the water tank.

[0011] Preferably, the transmission mechanism includes a first rotating shaft fixedly connected to the surface of the heat dissipation pipe, the surface of the first rotating shaft is rotatably sleeved with a torsion spring, the surface of the torsion spring is rotatably sleeved with a wire roller, one end of the torsion spring is fixedly connected to the first rotating shaft, the other end of the torsion spring is fixedly connected to the wire roller, the surface of the wire roller is fixedly connected with a fixing rope, the surface of the buffer block is slidably connected with a second magnet, and the interior of the heat dissipation pipe is rotatably connected with the second rotating shaft.

[0012] Preferably, the fixing rope is wound around the surface of the line roller, and the bottom end of the fixing rope is fixedly connected to the second magnet.

[0013] Preferably, a sealing block is rotatably sleeved on the surface of the second rotating shaft, and the surface of the sealing block is fixedly connected to the heat dissipation pipe.

[0014] Preferably, the meshing mechanism includes a transmission block rotatably connected to the inner side wall of the line roller, a second spring rod is fixedly connected to the surface of the transmission block, the other end of the second spring rod is fixedly connected to the line roller, and a second limit block is fixedly connected to the inner side wall of the line roller.

[0015] Preferably, the surface of the second limiting block is in close contact with the transmission block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The vibration of the wind wheel is continuously transmitted to the main bearing seat of the wind turbine, so that the oil in the second buffer chamber continuously absorbs the energy generated by the vibration, the temperature of the oil continues to rise, the internal energy of the oil is transmitted to the buffer block, the heat dissipation pipe absorbs the heat from the buffer block, the coolant in the heat dissipation pipe absorbs the heat from the heat dissipation pipe, and the temperature of the coolant rises. At the same time, the sliding plug drives the first magnet to move, the first magnet drives the second magnet to move, the second magnet drives the fixed rope to move, the line roller releases the line, the fixed rope drives the line roller to rotate, the line roller drives the transmission block to rotate clockwise around the center of the line roller, the transmission block contacts the gear, the transmission block presses the gear, according to Newton's third law, the gear has an opposite force on the transmission block, the transmission block rotates clockwise, the transmission block and the second limit block The second limit block prevents the transmission block from rotating clockwise, and the transmission block cannot rotate clockwise. When the pressure of the transmission block on the gear reaches a certain critical value, the transmission block drives the gear to rotate, and the gear drives the second rotating shaft to rotate. The second rotating shaft drives the impeller to rotate, and the impeller drives the coolant in the heat dissipation pipe to flow. The coolant cooled in the water tank flows into the heat dissipation pipe, and the coolant with increased temperature in the heat dissipation pipe flows back to the water tank from the other end of the heat dissipation pipe, realizing water-cooled heat dissipation, so that the oil temperature inside the second buffer chamber will not exceed the limit value, avoiding thermal decay. At the same time, it effectively avoids the temperature of the buffer device being too high, so that the buffer device always maintains an excellent buffering function, ensures the buffering effect of the device, and improves the service life of the bearing seat.

[0018] 2. Sliding sleeve of the main bearing seat of the wind turbine set on the slide rail, and then fixing the first limit block on both ends of the slide rail to complete the installation of the main bearing seat of the wind turbine set. The main bearing seat of the wind turbine set can be moved, which is convenient for installation and disassembly, and improves the convenience of the device. Vibration reduction measures are taken at the front and back of the connection between the bearing seat foot and the slide rail, which effectively reduces the impact of the wind rotor vibration on the nacelle and tower. At the same time, it weakens the vibration load of the wind turbine and improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration proposed by the present invention;

[0020] Figure 2A side view of a main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration proposed by the present invention;

[0021] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0022] Figure 4 for Figure 3 The enlarged view of A1 in the middle;

[0023] Figure 5 This is a partial left view of a main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration proposed by the present invention;

[0024] Figure 6 A partial right view of a main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration proposed by the present invention;

[0025] Figure 7 A partial stereoscopic view of a main bearing seat of a wind turbine set for suppressing the transmission of wind rotor vibration proposed by the present invention.

[0026] In the figure: 1 slide rail, 2 first limit block, 3 main bearing seat of wind turbine, 4 buffer block, 5 first buffer cavity, 6 second buffer cavity, 7 first spring rod, 8 buffer rod, 9 slide plug, 10 flow hole, 11 first magnet, 12 fixed block, 13 water tank, 14 heat dissipation pipe, 15 first rotating shaft, 16 torsion spring, 17 wire roller, 18 fixed rope, 19 second magnet, 20 transmission block, 21 second spring rod, 22 second limit block, 23 second rotating shaft, 24 gear, 25 impeller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-7A main bearing seat of a wind turbine set for suppressing the transmission of wind wheel vibration comprises a slide rail 1, two ends of the slide rail 1 are fixedly connected with a first limit block 2, the surface of the slide rail 1 is slidably connected with a main bearing seat 3 of the wind turbine set, the main bearing seat 3 of the wind turbine set and the outer ring of the main shaft bearing are still connected by an overfit, a buffer block 4 is fixedly connected with the surface of the first limit block 2, a first buffer cavity 5 is provided inside the buffer block 4, a second buffer cavity 6 is provided inside the first buffer cavity 5, a first spring rod 7 is fixedly connected to the inner side wall of the first buffer cavity 5, a buffer rod 8 is slidably connected inside the buffer block 4, the left end of the buffer rod 8 is fixedly connected to the first spring rod 7, a sealing plug is slidably sleeved on the surface of the buffer rod 8, the surface of the sealing plug is fixedly connected to the buffer block 4, the sealing plug can effectively prevent the oil in the second buffer cavity 6 from overflowing, ensure the sealing of the second buffer cavity 6, so that the device can work normally, and the right end of the buffer rod 8 is in close contact with the main bearing seat 3 of the wind turbine set.

[0029] A sliding plug 9 is fixedly sleeved on the surface of the buffer rod 8, and a flow hole 10 is opened on the sliding plug 9. A first magnet 11 is fixedly connected to the top of the sliding plug 9. A fixed block 12 is fixedly connected to the top of the buffer block 4. The other end of the fixed block 12 is fixedly connected to a water tank 13. The water tank 13 is filled with coolant. The coolant is a liquid with a high specific heat capacity and can absorb a lot of heat, which is convenient for absorbing the heat generated when the device is working. A heat dissipation pipe 14 is fixedly connected to the bottom end of the water tank 13. The heat dissipation pipe 14 is wound around the surface of the buffer block 4, and the other end of the heat dissipation pipe 14 is fixedly connected to the water tank 13.

[0030] The surface of the heat dissipation tube 14 is fixedly connected with a transmission mechanism, and the transmission mechanism includes a first rotating shaft 15 fixedly connected to the surface of the heat dissipation tube 14, the surface of the first rotating shaft 15 is rotatably sleeved with a torsion spring 16, the surface of the torsion spring 16 is rotatably sleeved with a wire roller 17, one end of the torsion spring 16 is fixedly connected to the first rotating shaft 15, the other end of the torsion spring 16 is fixedly connected to the wire roller 17, the surface of the wire roller 17 is fixedly connected with a fixing rope 18, the surface of the buffer block 4 is slidably connected with a second magnet 19, the fixing rope 18 is wound around the surface of the wire roller 17, and the bottom end of the fixing rope 18 is fixedly connected to the second magnet 19, the inside of the heat dissipation tube 14 is rotatably connected with a second rotating shaft 23, the surface of the second rotating shaft 23 is rotatably sleeved with a sealing block, the surface of the sealing block is fixedly connected to the heat dissipation tube 14, the left end of the second rotating shaft 23 is fixedly connected with a gear 24, and the right end of the second rotating shaft 23 is fixedly connected with an impeller 25.

[0031] No matter the second magnet 19 moves to the left or to the right, the direction in which the fixed rope 18 drives the wire roller 17 to rotate is fixed, thereby fixing the direction in which the second rotating shaft 23 rotates, and the direction in which the impeller 25 rotates is also fixed. The impeller 25 always drives the coolant in the heat pipe 14 to flow in the same direction, so that the coolant in the water tank 13 can enter the heat pipe 14, and the coolant in the heat pipe 14 that has absorbed heat can flow back into the water tank 13. The heat pipe 14 and the buffer block 4 are both made of materials with good thermal conductivity, and can timely export the internal energy of the oil in the second buffer chamber 6, thereby realizing water-cooled heat dissipation, effectively avoiding excessive temperature of the buffer device, and enabling the buffer device to always maintain excellent buffering function, thereby ensuring the buffering effect of the device and improving the service life of the bearing seat.

[0032] The inner side wall of the line roller 17 is rotatably connected with an engaging mechanism, which includes a transmission block 20 rotatably connected to the inner side wall of the line roller 17, a second spring rod 21 is fixedly connected to the surface of the transmission block 20, the other end of the second spring rod 21 is fixedly connected to the line roller 17, and a second limit block 22 is fixedly connected to the inner side wall of the line roller 17, and the surface of the second limit block 22 is in close contact with the transmission block 20.

[0033] In the present invention, the main bearing seat 3 of the wind turbine set is slidably sleeved on the slide rail 1, and then the first limit blocks 2 are fixed to both ends of the slide rail 1 to complete the installation of the main bearing seat 3 of the wind turbine set.

[0034] When the wind turbine is working, the vibration of the wind rotor is transmitted to the main bearing seat 3 of the wind turbine set. The main bearing seat 3 of the wind turbine set vibrates, and the main bearing seat 3 of the wind turbine set drives the buffer rod 8 to move. When the buffer rod 8 moves to the left, due to the extremely fast vibration speed of the wind rotor, the buffer rod 8 moves at an extremely fast speed. The buffer rod 8 drives the sliding plug 9 to move. The speed of the sliding plug 9 is the same as that of the buffer rod 8. The oil at the left end of the second buffer chamber 6 enters the right end of the second buffer chamber 6 through the flow hole 10. Due to the extremely fast movement speed of the sliding plug 9, the speed at which the sliding plug 9 compresses the space is extremely fast. The space at the left end of the sliding plug 9 is rapidly compressed, and the flow rate of the flow hole 10 is The flow rate of the flow hole 10 is fixed, which is much lower than the speed at which the space is compressed, so that the oil at the left end of the sliding plug 9 is compressed, and the oil pressure continues to increase. Under the action of the oil pressure, the resistance received by the sliding plug 9 becomes larger and larger, thereby completely offsetting the vibration force that drives the sliding plug 9 to move. The buffer rod 8 presses the first spring rod 7, and the first spring rod 7 contracts. The oil cooperates with the first spring rod 7 to absorb the energy of the vibration. The oil converts the energy of the vibration into internal energy, and the first spring rod 7 converts the energy of the vibration into its own elastic potential energy. The oil cooperates with the first spring rod 7 to completely absorb the energy of the vibration, and the vibration cannot be transmitted to the slide rail 1.

[0035] The vibration of the wind wheel is continuously transmitted to the main bearing seat 3 of the wind turbine, so that the oil in the second buffer chamber 6 continuously absorbs the energy generated by the vibration, the temperature of the oil continuously rises, and the internal energy of the oil is transmitted to the buffer block 4, the buffer block 4 heats up, the heat dissipation pipe 14 absorbs the heat from the buffer block 4, and the coolant in the heat dissipation pipe 14 absorbs the heat from the heat dissipation pipe 14, and the temperature of the coolant rises.

[0036] At the same time, the sliding plug 9 drives the first magnet 11 to move. By utilizing the property of opposite magnets attracting each other, the first magnet 11 drives the second magnet 19 to move, and the second magnet 19 drives the fixed rope 18 to move. The line roller 17 releases the line, and the fixed rope 18 drives the line roller 17 to rotate. The torsion spring 16 twists and stores force. The line roller 17 drives the transmission block 20 to rotate clockwise around the center of the circle of the line roller 17. The transmission block 20 contacts the gear 24, and the transmission block 20 presses the gear 24. According to Newton's third law, the gear 24 has an opposite force on the transmission block 20. The transmission block 20 rotates clockwise, and the transmission block 20 is in close contact with the second limit block 22. The second limit block 22 prevents the transmission block 20 from rotating clockwise, and the transmission block 20 cannot rotate clockwise. When the pressure of the transmission block 20 on the gear 24 reaches a certain critical value, the transmission block 20 drives the gear 24 to rotate, the gear 24 drives the second rotating shaft 23 to rotate, the second rotating shaft 23 drives the impeller 25 to rotate, the impeller 25 drives the coolant in the heat dissipation pipe 14 to flow, the cooled coolant in the water tank 13 flows into the heat dissipation pipe 14, and the coolant with increased temperature in the heat dissipation pipe 14 flows back into the water tank 13 from the other end of the heat dissipation pipe 14, completing the heat dissipation of the buffer block 4, so that the oil temperature inside the second buffer cavity 6 does not exceed the limit value.

[0037] When the second magnet 19 returns to the initial position, the torsion spring 16 recovers, the torsion spring 16 drives the line roller 17 to reset, the line roller 17 rewinds, the line roller 17 drives the transmission block 20 to rotate counterclockwise around the center of the line roller 17, the transmission block 20 contacts the gear 24, the transmission block 20 presses the gear 24, according to Newton's third law, the gear 24 has an opposite force on the transmission block 20, the transmission block 20 rotates counterclockwise, the second limit block 22 cannot limit the counterclockwise rotation of the transmission block 20, the second spring rod 21 contracts, the force of the transmission block 20 on the gear 24 cannot drive the gear 24 to rotate, when the line roller 17 is stationary, the second spring rod 21 recovers, and the second spring rod 21 drives the transmission block 20 to reset.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] 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 main bearing seat of a wind turbine for suppressing the transmission of wind rotor vibration, comprising a slide rail (1), characterized in that: The two ends of the slide rail (1) are fixedly connected with first limit blocks (2), the surface of the slide rail (1) is slidably connected with a main bearing seat (3) of a wind turbine set, the surface of the first limit block (2) is fixedly connected with a buffer block (4), a first buffer cavity (5) is provided inside the buffer block (4), a second buffer cavity (6) is provided inside the first buffer cavity (5), a first spring rod (7) is fixedly connected to the inner wall of the first buffer cavity (5), a buffer rod (8) is slidably connected inside the buffer block (4), a sliding plug (9) is fixedly sleeved on the surface of the buffer rod (8), a flow hole (10) is provided on the sliding plug (9), a first magnet (11) is fixedly connected to the top of the sliding plug (9), a fixed block (12) is fixedly connected to the top of the buffer block (4), the other end of the fixed block (12) is fixedly connected to a water tank (13), a heat dissipation pipe (14) is fixedly connected to the bottom end of the water tank (13), and a transmission mechanism is fixedly connected to the surface of the heat dissipation pipe (14); The transmission mechanism comprises a first rotating shaft (15) fixedly connected to the surface of the heat dissipation pipe (14); a torsion spring (16) is rotatably sleeved on the surface of the first rotating shaft (15); a wire roller (17) is rotatably sleeved on the surface of the torsion spring (16); one end of the torsion spring (16) is fixedly connected to the first rotating shaft (15); the other end of the torsion spring (16) is fixedly connected to the wire roller (17); a fixing rope (18) is fixedly connected to the surface of the wire roller (17); a second magnet (19) is slidably connected to the surface of the buffer block (4); and the interior of the heat dissipation pipe (14) is rotatably connected to the second rotating shaft (23); The left end of the second rotating shaft (23) is fixedly connected to a gear (24), the right end of the second rotating shaft (23) is fixedly connected to an impeller (25), and the inner side wall of the line roller (17) is rotatably connected to a meshing mechanism; The left end of the buffer rod (8) is fixedly connected to the first spring rod (7), a sealing plug is slidably sleeved on the surface of the buffer rod (8), and a surface of the sealing plug is fixedly connected to the buffer block (4); The meshing mechanism comprises a transmission block (20) rotatably connected to the inner side wall of the line roller (17), a second spring rod (21) being fixedly connected to the surface of the transmission block (20), the other end of the second spring rod (21) being fixedly connected to the line roller (17), and a second limit block (22) being fixedly connected to the inner side wall of the line roller (17).

2. A main bearing seat of a wind turbine generator set for suppressing the transmission of wind rotor vibration according to claim 1, characterized in that: The right end of the buffer rod (8) is in close contact with the main bearing seat (3) of the wind turbine generator set.

3. The main bearing seat of a wind turbine generator set for suppressing the transmission of wind rotor vibration according to claim 1, characterized in that: The water tank (13) is filled with cooling liquid.

4. A main bearing seat of a wind turbine generator set for suppressing the transmission of wind rotor vibration according to claim 1, characterized in that: The heat dissipation pipe (14) is wound around the surface of the buffer block (4), and the other end of the heat dissipation pipe (14) is fixedly connected to the water tank (13).

5. The main bearing seat of a wind turbine generator set for suppressing the transmission of wind rotor vibration according to claim 1, characterized in that: The fixing rope (18) is wound around the surface of the line roller (17), and the bottom end of the fixing rope (18) is fixedly connected to the second magnet (19).

6. A main bearing seat of a wind turbine generator set for suppressing the transmission of wind rotor vibration according to claim 1, characterized in that: A sealing block is rotatably sleeved on the surface of the second rotating shaft (23), and the surface of the sealing block is fixedly connected to the heat dissipation pipe (14).

7. A main bearing seat of a wind turbine generator set for suppressing the transmission of wind rotor vibration according to claim 1, characterized in that: The surface of the second limiting block (22) is in close contact with the transmission block (20).

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