Carbon powder collecting device for slip ring chamber of wind driven generator

Abstract

The invention discloses a carbon powder collecting device for a slip ring chamber of a wind driven generator, relates to the technical field of wind driven generators, and aims to solve the problems that in the background technology, part of carbon powder is easy to penetrate through a filter element, so that the carbon powder is discharged along with wind blown out by a fan, the filtering effect is poor, and the carbon powder accumulated above the filter element cannot be cleaned in time. In order to solve the problems that carbon powder cannot be timely filtered by a filter element and the practicability is low, the following scheme is provided: the device comprises a slip ring chamber and a cooling fan connected to the outer wall of the inclined upper part of the slip ring chamber through a bolt, a frustum-shaped wind scooper is fixedly arranged on the inner wall of the lower part of the slip ring chamber, and an air outlet frame is connected to the outer wall of the bottom of the slip ring chamber through a bolt; a first filtering mechanism is arranged on the upper inner wall of the air outlet frame. Carbon powder is filtered and collected through the two layers of filter elements, a small amount of carbon powder is prevented from being discharged along with cooling air, the filtering effect is improved, the collected carbon powder can be cleaned in time, the situation that the carbon powder cannot be filtered due to excessive accumulation of the carbon powder is prevented, and the practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine generators, and in particular to a carbon powder collecting device for a slip ring chamber of a wind turbine generator. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. A wind turbine generally consists of a wind rotor, a generator (including devices), a direction regulator (tail wing), a tower, a speed limiting safety mechanism and an energy storage device. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of wind force, and it converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity driven by the wind rotor shaft.

[0003] Some wind turbine generators use double-fed asynchronous wind turbines. The non-driving end of the double-fed asynchronous wind turbine is equipped with a slip ring. The outer surface of the slip ring contacts the brush holder carbon brush. A slip ring chamber is arranged outside the slip ring carbon brush. When the motor is running, the slip ring rotates together and generates friction with the brush holder carbon brush, which generates carbon powder. The accumulated carbon powder needs to be cleaned in time. The slip ring chamber is equipped with a slip ring chamber cooling fan. The slip ring chamber and the slip ring chamber cooling fan together form an air path to achieve slip ring cooling and carbon powder collection. The slip ring chamber is equipped with a vertical partition, which divides the slip ring chamber into two front and rear chambers, corresponding to the slip ring carbon brush and the slip ring chamber cooling fan respectively. A carbon powder collection box is installed on the bottom surface of the rear chamber of the slip ring chamber. The inner cavity of the carbon powder collection box is equipped with an oblique U-shaped groove. The U-shaped groove is equipped with a filter. The slip ring chamber cooling fan guides the air with carbon powder from the front chamber through the partition to the rear chamber, and then to the carbon powder collection box. The filter collects the carbon powder, and the air filtered by the filter is discharged through the air outlet.

[0004] Based on the carbon powder collection device used for wind turbines in the prior art, the following problems exist during use:

[0005] 1. Only one layer of filter element is provided for filtering carbon powder. Some carbon powder easily passes through the filter element, causing the carbon powder to be discharged with the wind blown out by the fan, resulting in poor filtering effect.

[0006] 2. The carbon powder accumulated on the filter element cannot be cleaned in time, which may easily cause the filter element to be unable to filter the carbon powder in time, and the practicality is low. Summary of the invention

[0007] The present invention provides a carbon powder collecting device for a slip ring chamber of a wind turbine generator, which solves the problem that when the carbon powder collecting device proposed in the prior art is used, part of the carbon powder easily passes through the filter element, causing the carbon powder to be discharged with the wind blown out by the fan, resulting in poor filtering effect, and the carbon powder accumulated on the filter element cannot be cleaned in time, which easily causes the filter element to be unable to filter the carbon powder in time, and the problem of low practicality.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A carbon powder collecting device for a slip ring chamber of a wind turbine generator comprises a slip ring chamber and a cooling fan connected to an oblique upper outer wall of the slip ring chamber by bolts, a prism-shaped air guide cover is fixedly arranged on the lower inner wall of the slip ring chamber, and an air outlet frame is connected to the bottom outer wall of the slip ring chamber by bolts, a first filter mechanism is arranged on the upper inner wall of the air outlet frame, the first filter mechanism comprises two ventilation frames and a first filter element embedded in the ventilation frame, a second filter mechanism is arranged on the lower inner wall of the air outlet frame, the second filter mechanism comprises a fixing block connected to the lower inner wall of the air outlet frame by bolts, a second filter element abutting against the inner wall of the fixing block, a supporting block abutting against the inner wall of the second filter element, and mounting plates respectively connected to the inner walls of both sides of the air outlet frame by bolts on both sides. and a vibration motor connected to the outer wall of the bottom of the mounting plate by bolts, a cleaning mechanism is provided on the inner wall of the upper part of the air outlet frame, the cleaning mechanism includes two servo motors, two screws connected to the outer walls of one end of the output shafts of the two servo motors by couplings, two threaded blocks respectively fixed on the outer walls of the two screws and cleaning plates respectively fixed on the outer walls of one side of the two threaded blocks, sealing mechanisms are provided on both sides of the air outlet frame, the sealing mechanisms include two mounting blocks and sealing plates respectively fixed on the outer walls obliquely below the air outlet frame, unloading pipes are provided on both sides of the air outlet frame, two supporting assemblies are provided under the two sealing plates, and the two supporting assemblies include a fixing seat and a telescopic cylinder fixed on the outer wall of one side of the air outlet frame.

[0010] Preferably, an air outlet is provided on the inner wall of the bottom of the slip ring chamber located inside the air guide cover, and a vent with specifications matching those of the air outlet is provided on the inner wall of the top of the air outlet frame.

[0011] Preferably, the two ventilation frames are hinged to each other, and two sides of the two ventilation frames are respectively connected to the inner walls of the air outlet frame by bolts.

[0012] Preferably, the support block is connected to the inner wall of the fixing block by bolts, and the bottom of the mounting plate is respectively fixed on the outer wall of the bottom of the support block.

[0013] Through the above scheme, the carbon powder generated by the friction between the slip ring and the carbon brush when it rotates is filtered and collected through two ventilation frames, the first filter element, the fixed block and the second filter element. The first filter element collects most of the carbon powder above the ventilation frame, and the second filter element filters and collects the remaining carbon powder. At the same time, the vibration motor runs to shake off the carbon powder on the fixed block.

[0014] Preferably, two mounting brackets are fixedly provided on the outer wall of one side of the air outlet frame, and the two servo motors are respectively connected to the outer wall of one side of the two mounting brackets by bolts, one end of the two screw rods are respectively connected to the inner wall of one side of the air outlet frame by bearings, and a brush is fixedly provided on the outer wall of the bottom of the cleaning plate, and the bottom of the brush is in contact with the outer wall of the top of the ventilation frame.

[0015] Through the above scheme, the two servo motor output shafts drive the two screws to rotate, thereby driving the two threaded blocks and the cleaning plate to move. The cleaning plate moves along the upper surface of the ventilation frame, thereby transporting the carbon powder accumulated on the ventilation frame to the discharge pipe.

[0016] Preferably, a connecting column is connected to the outer wall of the two mounting blocks on one side via a bearing, and the sealing plate is fixedly arranged on the outer wall of one side of the connecting column.

[0017] Preferably, installation openings are opened on the inner walls on both sides of the air outlet frame, and two discharge pipes are respectively fixed in the installation openings, the bottom inner walls of the upper ends of the two discharge pipes are flush with the top of the ventilation frame, and the tops of the two sealing plates are respectively abutted against the bottom outer walls of the two discharge pipes.

[0018] Preferably, an articulated seat is connected to the outer wall of one side of the fixed seat through a bearing, and the telescopic cylinder is connected to the outer wall of one end of the articulated seat through bolts, a connecting seat is fixed on the outer wall of one end of the telescopic cylinder piston rod, and a mounting seat is connected to the outer wall of one side of the connecting seat through a bearing, and the mounting seat is fixed on the outer wall of the bottom of the sealing plate.

[0019] Through the above scheme, the piston rod of the telescopic cylinder moves, driving the sealing plate and the connecting column to rotate along the axis of the mounting block, thereby causing the sealing plate to detach from the discharge pipe, and then collecting the carbon powder in the discharge pipe into a special container for carbon powder.

[0020] The beneficial effects of the present invention are:

[0021] 1. The two ventilation frames, the first filter element, the fixed block and the second filter element filter and collect the carbon powder generated by the friction between the slip ring and the carbon brush when it rotates. The first filter element collects most of the carbon powder above the ventilation frame, and the second filter element filters and collects the remaining carbon powder. At the same time, the vibration motor runs to shake off the carbon powder on the fixed block, and the carbon powder is filtered and collected through two layers of filter elements to prevent a small amount of carbon powder from being discharged with the cooling air, thereby improving the filtering effect.

[0022] 2. The output shafts of the two servo motors drive the two screws to rotate, and then drive the two threaded blocks and the cleaning plate to move. The cleaning plate moves along the upper surface of the ventilation frame, and then transports the carbon powder accumulated on the ventilation frame to the discharge pipe. The collected carbon powder can be cleaned in time to prevent excessive accumulation of carbon powder and the inability to filter, thereby improving practicality.

[0023] In summary, the present invention filters and collects carbon powder through two layers of filter elements, preventing a small amount of carbon powder from being discharged with the cooling air, thereby improving the filtering effect, being able to clean the collected carbon powder in time, preventing excessive accumulation of carbon powder that makes it impossible to filter, and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall front view structure of a carbon powder collecting device for a slip ring chamber of a wind turbine proposed by the present invention.

[0025] Figure 2 The present invention is a schematic diagram of the overall cross-sectional structure of a carbon powder collecting device for a slip ring chamber of a wind turbine generator.

[0026] Figure 3 The present invention provides a schematic structural diagram of the positional relationship among a slip ring chamber, a cooling fan, an air guide cover and an air outlet frame of a carbon powder collecting device for a slip ring chamber of a wind turbine generator.

[0027] Figure 4 The present invention is a schematic cross-sectional structure diagram of a first filtering mechanism of a carbon powder collecting device for a wind turbine slip ring chamber.

[0028] Figure 5 The present invention is a schematic cross-sectional structure diagram of a second filtering mechanism of a carbon powder collecting device for a wind turbine slip ring chamber.

[0029] Figure 6 This is a schematic diagram of the main structure of a cleaning mechanism of a carbon powder collecting device for a slip ring chamber of a wind turbine generator proposed by the present invention.

[0030] Figure 7 This is a schematic diagram of the main structure of a sealing mechanism of a carbon powder collecting device for a slip ring chamber of a wind turbine generator proposed by the present invention.

[0031] Figure 8 This is a schematic diagram of the main structure of a support assembly of a carbon powder collecting device for a slip ring chamber of a wind turbine proposed by the present invention.

[0032] In the figure: 1. slip ring chamber; 2. cooling fan; 3. air guide cover; 4. air outlet frame; 5. first filter mechanism; 501. ventilation frame; 502. first filter element; 6. second filter mechanism; 601. fixing block; 602. second filter element; 603. support block; 604. mounting plate; 605. vibration motor; 7. cleaning mechanism; 701. mounting frame; 702. servo motor; 703. screw; 704. threaded block; 705. cleaning plate; 8. sealing mechanism; 801. mounting block; 802. connecting column; 803. sealing plate; 9. discharge pipe; 10. supporting assembly; 101. fixing seat; 102. hinged seat; 103. telescopic cylinder; 104. connecting seat; 105. mounting seat. DETAILED DESCRIPTION

[0033] 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.

[0034] Example 1, reference Figure 1-5 A carbon powder collecting device for a slip ring chamber of a wind turbine generator comprises a slip ring chamber 1 and a cooling fan 2 connected to the outer wall of the slip ring chamber 1 obliquely above by bolts, a prism-shaped air guide cover 3 is fixedly arranged on the inner wall of the lower part of the slip ring chamber 1, an air outlet frame 4 is connected to the outer wall of the bottom of the slip ring chamber 1 by bolts, an air outlet is opened on the inner wall of the bottom of the slip ring chamber 1 located inside the air guide cover 3, a vent with a specification matching that of the air outlet is opened on the inner wall of the top of the air outlet frame 4, a first filter mechanism 5 is arranged on the inner wall of the upper part of the air outlet frame 4, the first filter mechanism 5 comprises two ventilation frames 501 and a first filter element 502 embedded in the ventilation frames 501, the two ventilation frames 501 are hinged to each other, and the two ventilation frames 501 are hinged to each other. The two sides are respectively connected to the inner walls of the air outlet frame 4 by bolts, and a second filtering mechanism 6 is provided on the lower inner wall of the air outlet frame 4. The second filtering mechanism 6 includes a fixing block 601 connected to the inner wall of the lower part of the air outlet frame 4 by bolts, a second filter element 602 abutting on the inner wall of the fixing block 601, a supporting block 603 abutting on the inner wall of the second filter element 602, a mounting plate 604 connected to the inner walls of the air outlet frame 4 by bolts on both sides, and a vibration motor 605 connected to the outer wall of the bottom of the mounting plate 604 by bolts. The supporting block 603 is connected to the inner wall of the fixing block 601 by bolts, and the bottom of the mounting plate 604 is respectively fixed on the outer wall of the bottom of the supporting block 603.

[0035] Example 2, reference Figure 6-8, a carbon powder collection device for the slip ring chamber of a wind turbine generator, also includes a cleaning mechanism 7, the cleaning mechanism 7 includes two servo motors 702, two screws 703 connected to the outer wall of one end of the output shaft of the two servo motors 702 through a coupling, two threaded blocks 704 respectively fixed on the outer walls of the two screws 703, and cleaning plates 705 respectively fixed on the outer walls of one side of the two threaded blocks 704 on both sides, two mounting frames 701 are fixed on the outer wall of one side of the air outlet frame 4, the two servo motors 702 are respectively connected to the outer walls of one side of the two mounting frames 701 through bolts, one end of the two screws 703 is respectively connected to the inner wall of one side of the air outlet frame 4 through bearings, a brush is fixed on the outer wall of the bottom of the cleaning plate 705, the bottom of the brush abuts against the outer wall of the top of the ventilation frame 501, and sealing mechanisms 8 are provided on both sides of the air outlet frame 4. The sealing mechanism 8 includes two mounting blocks 801 and a sealing plate 803 respectively fixed on the outer wall of the oblique lower side of the air outlet frame 4, and the two mounting blocks 801 are respectively fixed on the outer wall of the opposite side. A connecting column 802 is connected to the wall through a bearing, and a sealing plate 803 is fixed to the outer wall of one side of the connecting column 802. Discharge pipes 9 are provided on both sides of the air outlet frame 4. Installation openings are opened on the inner walls of both sides of the air outlet frame 4. Two discharge pipes 9 are respectively fixed in the installation openings. The bottom inner walls of the upper ends of the two discharge pipes 9 are flush with the top of the ventilation frame 501. The tops of the two sealing plates 803 are respectively abutted against the outer walls of the bottoms of the two discharge pipes 9. Two supporting components 10 are provided under the two sealing plates 803. A supporting assembly 10 includes a fixed seat 101 and a telescopic cylinder 103 fixed on the outer wall of one side of the air outlet frame 4, an outer wall of one side of the fixed seat 101 is connected with a hinge seat 102 through a bearing, the telescopic cylinder 103 is connected to the outer wall of one end of the hinge seat 102 through bolts, a connecting seat 104 is fixed on the outer wall of one end of the piston rod of the telescopic cylinder 103, an outer wall of one side of the connecting seat 104 is connected with a mounting seat 105 through a bearing, and the mounting seat 105 is fixed on the outer wall of the bottom of the sealing plate 803.

[0036] The cooling fan 2 operates to cool the slip ring in the slip ring chamber 1, and blows the carbon powder generated by friction to the air outlet frame 4. The two ventilation frames 501, the first filter element 502, the fixed block 601 and the second filter element 602 filter and collect the carbon powder generated by the friction between the slip ring and the carbon brush when the slip ring rotates. The first filter element 502 collects most of the carbon powder above the ventilation frame 501, and the second filter element 602 filters and collects the remaining carbon powder. At the same time, the vibration motor 605 operates to shake off the carbon powder on the fixed block 601. The two servo motors 605 are used to cool the slip ring in the air outlet frame 4. The output shaft of the servo motor 702 drives the two screws 703 to rotate, thereby driving the two threaded blocks 704 and the cleaning plate 705 to move. The cleaning plate 705 moves along the upper surface of the ventilation frame 501, thereby transporting the carbon powder accumulated on the ventilation frame 501 to the discharge pipe 9. The piston rod of the telescopic cylinder 103 moves, driving the sealing plate 803 and the connecting column 802 to rotate along the axis of the mounting block 801, thereby making the sealing plate 803 detach from the discharge pipe 9, and then collecting the carbon powder in the discharge pipe 9 into a special container for carbon powder.

[0037] 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.

[0038] 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.

[0039] 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 carbon powder collecting device for a slip ring chamber of a wind turbine generator, comprising a slip ring chamber (1) and a cooling fan (2) connected to an outer wall obliquely above the slip ring chamber (1) by bolts, characterized in that: A prism-shaped air guide cover (3) is fixedly provided on the lower inner wall of the slip ring chamber (1), and an air outlet frame (4) is connected to the bottom outer wall of the slip ring chamber (1) via bolts; A first filtering mechanism (5) is provided on the inner wall of the upper portion of the air outlet frame (4), wherein the first filtering mechanism (5) comprises two ventilation frames (501) and a first filter element (502) embedded in the ventilation frame (501); A second filtering mechanism (6) is provided on the lower inner wall of the air outlet frame (4), the second filtering mechanism (6) comprising a fixing block (601) connected to the lower inner wall of the air outlet frame (4) by bolts, a second filter element (602) abutting against the inner wall of the fixing block (601), a supporting block (603) abutting against the inner wall of the second filter element (602), a mounting plate (604) connected to the inner walls of both sides of the air outlet frame (4) by bolts on both sides, and a vibration motor (605) connected to the outer wall of the bottom of the mounting plate (604) by bolts; A cleaning mechanism (7) is provided on the inner wall of the upper part of the air outlet frame (4), and the cleaning mechanism (7) comprises two servo motors (702), two screw rods (703) respectively connected to the outer wall of one end of the output shaft of the two servo motors (702) through couplings, two threaded blocks (704) respectively fixed on the outer wall of the two screw rods (703), and cleaning plates (705) respectively fixed on the outer wall of one side of the two threaded blocks (704); Sealing mechanisms (8) are provided on both sides of the air outlet frame (4), and the sealing mechanisms (8) include two mounting blocks (801) and a sealing plate (803) respectively fixed on the outer wall obliquely below the air outlet frame (4); Discharge pipes (9) are provided on both sides of the air outlet frame (4); Two support assemblies (10) are provided below the two sealing plates (803), and the two support assemblies (10) include a fixing seat (101) fixed on an outer wall of one side of the air outlet frame (4) and a telescopic cylinder (103).

2. A carbon powder collecting device for a wind turbine slip ring chamber according to claim 1, characterized in that: An air outlet is provided on the inner wall of the bottom of the slip ring chamber (1) located inside the air guide cover (3), and a ventilating opening having specifications matching those of the air outlet is provided on the inner wall of the top of the air outlet frame (4).

3. A carbon powder collecting device for a wind turbine slip ring chamber according to claim 1, characterized in that: The two ventilation frames (501) are hinged to each other, and two sides of the two ventilation frames (501) are respectively connected to the inner walls of the air outlet frame (4) by bolts.

4. A carbon powder collecting device for a wind turbine slip ring chamber according to claim 1, characterized in that: The support block (603) is connected to the inner wall of the fixing block (601) by means of bolts, and the bottom of the mounting plate (604) is fixedly mounted on the outer wall of the bottom of the support block (603).

5. The carbon powder collecting device for a wind turbine slip ring chamber according to claim 1, characterized in that: Two mounting frames (701) are fixedly provided on the outer wall of one side of the air outlet frame (4), and two servo motors (702) are respectively connected to the outer wall of one side of the two mounting frames (701) by bolts, one end of the two screw rods (703) are respectively connected to the inner wall of one side of the air outlet frame (4) by bearings, and a brush is fixedly provided on the outer wall of the bottom of the cleaning plate (705), and the bottom of the brush is in contact with the outer wall of the top of the ventilation frame (501).

6. A carbon powder collecting device for a wind turbine slip ring chamber according to claim 1, characterized in that: A connecting column (802) is connected to the outer wall of one side of the two mounting blocks (801) via a bearing, and a sealing plate (803) is fixedly arranged on the outer wall of one side of the connecting column (802).

7. The carbon powder collecting device for a wind turbine slip ring chamber according to claim 1, characterized in that: The inner walls on both sides of the air outlet frame (4) are provided with installation openings, and the two discharge pipes (9) are respectively fixed in the installation openings. The bottom inner walls of the upper ends of the two discharge pipes (9) are flush with the top of the ventilation frame (501), and the tops of the two sealing plates (803) are respectively in contact with the bottom outer walls of the two discharge pipes (9).

8. The carbon powder collecting device for a wind turbine slip ring chamber according to claim 1, characterized in that: The outer wall of one side of the fixed seat (101) is connected to a hinge seat (102) via a bearing, and the telescopic cylinder (103) is connected to the outer wall of one end of the hinge seat (102) via a bolt. A connecting seat (104) is fixedly provided on the outer wall of one end of the piston rod of the telescopic cylinder (103), and a mounting seat (105) is connected to the outer wall of one side of the connecting seat (104) via a bearing. The mounting seat (105) is fixedly provided on the outer wall of the bottom of the sealing plate (803).

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