Doubly-fed wind generator gearbox cooling fan with automatic dirt cleaning device

Abstract

The utility model provides a double-fed wind driven generator gearbox cooling fan with an automatic dirt cleaning device, which belongs to the technical field of wind turbine units, and comprises a mounting shell, a cooling motor mounted in one side of the mounting shell, a mounting frame fixed at two ends of the mounting shell, and an automatic dirt cleaning device fixed at the other end of the mounting shell. The collecting structure comprises an air guiding shell fixed to the bottom end of the air inlet pipe, a replacing assembly arranged at the bottom end of the air guiding shell and a dust filtering bag arranged at the bottom end of the replacing assembly. According to the dust collector, airflow is prevented from being discharged through the isolation structure, the airflow generated by reverse blowing is guided into the dust filter bag through the air guide shell, the dust filter bag collects and treats dust and foreign matter, the dust filter bag is detached by rotating the rotary cover to be cleaned and replaced, and therefore the foreign matter collecting function of the dust collector is achieved; foreign matter generated in the back flushing process of the device is conveniently collected and treated in a centralized mode, the foreign matter is prevented from flying in the surrounding environment and being sucked again, cleanliness of the surrounding environment of the device is guaranteed, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbines, and particularly relates to a double-fed wind generator gearbox cooling fan with an automatic cleaning device. Background Technique

[0002] During the operation of the fan gearbox, a large amount of accumulated heat is easily generated during the operation of its gears, seriously affecting the service life of the gearbox. Therefore, a cooling fan for the fan gearbox is set up to enhance the heat dissipation effect of the gearbox. However, after the cooling fan is used for a long time, willow catkins and dust are adsorbed on the surface of the wind farm gearbox cooling fan. Therefore, a double-fed wind generator gearbox cooling fan with an automatic cleaning device is set up to clean the surface of the cooling fan, ensure the normal operation of the cooling fan, and prevent the gearbox from causing a high-temperature alarm shutdown due to heat dissipation problems.

[0003] After retrieval, the patent document with the patent number "202220586759.2" discloses a reverse blowing dust removal system for a cooling fan of a forced air-cooled radiator, which includes: a controller, a fan forward rotation contactor, and a fan reverse rotation contactor; wherein, the coil end of the fan forward rotation contactor is connected between the positive control signal output end of the controller and the negative pole of the external power supply through a set of normally closed contacts of the fan reverse rotation contactor; the coil end of the fan reverse rotation contactor is connected between the reverse control signal output end of the controller and the negative pole of the external power supply through a set of normally closed contacts of the fan forward rotation contactor; the fan forward rotation contactor and the fan reverse rotation contactor are also connected to the power supply circuit of the fan motor;

[0004] The above patent still has the following deficiencies: During the use of the existing device, the dust and foreign matters cleaned from the surface of the fan blades are directly discharged into the environment around the device, increasing the content of dust and foreign matters in the air around the device. As a result, during the next operation of the fan, it is very easy to inhale dust and foreign matters, increasing the burden on the fan and affecting the heat dissipation effect.

[0005] Therefore, there is an urgent need for a double-fed wind generator gearbox cooling fan with an automatic cleaning device to solve the above problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to address the problem that during the use of the existing device, the dust and foreign matters cleaned from the surface of the fan blades are directly discharged into the environment around the device, increasing the content of dust and foreign matters in the air around the device. As a result, during the next operation of the fan, it is very easy to inhale dust and foreign matters, increasing the burden on the fan and affecting the heat dissipation effect.

[0007] In order to achieve the above invention purpose, the present utility model provides the following technical solutions:

[0008] A double-fed wind turbine gearbox cooling fan with an automatic cleaning device, including a mounting shell, further comprising:

[0009] A cooling motor, installed inside one side of the mounting shell, and a fan blade is installed at the rotating end of the cooling motor;

[0010] A mounting frame, fixed at both ends of the mounting shell;

[0011] A control box, installed on one side of the mounting shell;

[0012] An air inlet pipe, fixed on one side of the mounting shell, and an isolation structure is arranged on one side of the air inlet pipe for partitioning the air inlet pipe;

[0013] A collection structure is arranged at the bottom end of the air inlet pipe. Among them, the collection structure includes a wind guide shell fixed at the bottom end of the air inlet pipe, a wind baffle rotatably connected to one side inside the wind guide shell, a counterweight fixed at one side of the bottom end of the wind baffle, a replacement component arranged at the bottom end of the wind guide shell, and a dust filter bag arranged at the bottom end of the replacement component.

[0014] As a preferred technical solution of the present application, the replacement component includes a screw tube fixed on the outer side of the wind guide shell, a rotary cover sleeved on the outer side of the screw tube, a connecting seat arranged at the bottom end inside the rotary cover, and a folding end fixed at the bottom end of the connecting seat and connected to the dust filter bag.

[0015] As a preferred technical solution of the present application, an external thread is arranged on the outer side wall of the screw tube, and an internal thread that cooperates with the external thread is arranged inside the rotary cover.

[0016] As a preferred technical solution of the present application, an annular groove matching the bottom end of the wind guide shell is opened at the top end of the connecting seat. The folding end is in the shape of a hollow tubular structure with surface wrinkles, and the folding end is a telescopic structure.

[0017] As a preferred technical solution of the present application, the isolation structure includes a cover shell fixed on one side of the air inlet pipe, a mounting seat installed on one side of the cover shell, a driving gear rotatably connected inside the mounting seat, a driving motor installed at the bottom end of the mounting seat and with its rotating end connected to the driving gear, and a transmission component arranged inside the cover shell.

[0018] As a preferred technical solution of the present application, the transmission component includes a gear ring rotatably connected inside the cover shell and meshing with the driving gear, a half gear rotatably connected inside the cover shell and meshing with the gear ring, and a baffle fixed on one side of the half gear.

[0019] As a preferred technical solution of the present application, the half gears are annularly and equidistantly distributed inside the cover shell, and the adjacent two groups of the baffles are staggered.

[0020] As a preferred technical solution of the present application, a backflush control relay is detachably installed at the bottom end inside the control box, and a contactor is detachably installed at the top end inside the control box.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] In the solution of the present application:

[0023] 1. By using the isolation structure to block the air flow from discharging, the air flow generated by backflushing is introduced into the interior of the dust filter bag by the air guide shell, so that the dust filter bag can collect and process dust and foreign matters. The dust filter bag can be disassembled and cleaned or replaced by rotating the rotary cover. Thus, the foreign matter collection function of this device is realized, which is convenient for centralized collection and treatment of the foreign matters generated during the backflushing process of the device, preventing the foreign matters from flying and being inhaled again in the surrounding environment, ensuring the cleanliness of the surrounding environment of the device and improving the cleaning effect.

[0024] 2. The driving motor drives the gear ring to rotate through the driving gear, so that the half gear drives the baffle to turn over, blocking the air inlet of the air inlet pipe and preventing the dust air flow from leaking through the air inlet pipe. Thus, the air inlet pipe isolation function of this device is realized, which is convenient for sealing the air inlet pipe during the backwashing and cleaning process of the device, blocking the discharge of dust and foreign matters through the air inlet pipe, so as to facilitate the collection of dust and foreign matters by the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is one of the structural schematic diagrams of the present utility model;

[0026] Figure 2 is the second structural schematic diagram of the present utility model;

[0027] Figure 3 is the third structural schematic diagram of the present utility model;

[0028] Figure 4 is the side view sectional structural schematic diagram of the control box of the present utility model;

[0029] Figure 5 is the three-dimensional sectional structural schematic diagram of the collection structure of the present utility model;

[0030] Figure 6 is the three-dimensional structural schematic diagram of the isolation structure of the present utility model;

[0031] Figure 7 is of the present utility model Figure 6 The enlarged partial sectional structural schematic diagram at A in it.

[0032] Labels in the figure: 1. Installation shell; 2. Fan blade; 3. Installation frame; 4. Air inlet pipe; 5. Isolation structure; 6. Driving motor; 7. Installation base; 8. Housing; 9. Baffle; 10. Half gear; 11. Ring gear; 12. Driving gear; 13. Control box; 14. Collection structure; 15. Dust filter bag; 16. Folding end; 17. Screw cap; 18. Counterweight; 19. Air guide shell; 20. Wind baffle; 21. Screw pipe; 22. Connection seat; 23. Cooling motor; 24. Reverse blowing control relay; 25. Contactor. Detailed implementation mode

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1-7 shown, a double-fed wind turbine gearbox cooling fan with an automatic cleaning device proposed in this embodiment includes an installation shell 1, and also includes a cooling motor 23 installed inside one side of the installation shell 1, and a fan blade 2 is installed at the rotating end of the cooling motor 23, an installation frame 3 fixed at both ends of the installation shell 1, a control box 13 installed on one side of the installation shell 1, an air inlet pipe 4 fixed on one side of the installation shell 1, and an isolation structure 5 is arranged on one side of the air inlet pipe 4 for partitioning the air inlet pipe 4, a collection structure 14 is arranged at the bottom end of the air inlet pipe 4, wherein the collection structure 14 includes an air guide shell 19 fixed at the bottom end of the air inlet pipe 4, a wind baffle 20 rotatably connected to one side inside the air guide shell 19, a counterweight 18 fixed at one side of the bottom end of the wind baffle 20, a replacement component arranged at the bottom end of the air guide shell 19, and a dust filter bag 15 arranged at the bottom end of the replacement component.

[0035] As Figure 1 、 Figure 2 and Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the replacement components include a screw tube 21 fixed to the outer side of the air guide housing 19, a rotary cap 17 sleeved on the outer side of the screw tube 21, a connection seat 22 arranged at the inner bottom end of the rotary cap 17, and a folding end 16 fixed to the bottom end of the connection seat 22 and connected to the dust filter bag 15. An external thread is provided on the outer side wall of the screw tube 21, and an internal thread that cooperates with the external thread is provided inside the rotary cap 17. An annular groove matching the bottom end of the air guide housing 19 is provided at the top end of the connection seat 22. The folding end 16 is in the shape of a hollow tubular structure with surface wrinkles, and the folding end 16 is a telescopic structure. When the isolation structure 5 cuts off the air inlet pipe 4, the air flow generated by the back blowing is guided by the inclined downward air guide housing 19, so that the dust air flow pushes the wind deflector 20 to turn downward and pass through the air guide housing 19 into the interior of the dust filter bag 15. The dust and foreign matters in the air are filtered by the dust filter bag 15, and the dust and foreign matters are collected and processed. At the same time, the volume of the dust filter bag 15 is expanded by the contraction and extension of the folding end 16, so as to facilitate the storage of a large amount of dust and foreign matters. By rotating the rotary cap 17, the rotary cap 17 is separated from the screw tube 21 through the thread, which is convenient for disassembling the dust filter bag 15 for cleaning and replacement. When the cooling motor 23 is running normally, the interior of the air guide housing 19 is blocked by the wind deflector 20 to prevent the dust and foreign matters in the dust filter bag 15 from being sucked into the interior of the air inlet pipe 4. The balance of the wind deflector 20 is adjusted by the counterweight 18 to facilitate the turning and resetting of the wind deflector 20.

[0036] As Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, as a preferred embodiment, on the basis of the above method, further, the isolation structure 5 includes a housing 8 fixed to one side of the air inlet pipe 4, a mounting seat 7 mounted on one side of the housing 8, a driving gear 12 rotatably connected inside the mounting seat 7, a driving motor 6 mounted at the bottom end of the mounting seat 7 and having a rotating end connected to the driving gear 12, and a transmission assembly provided inside the housing 8. The transmission assembly includes a toothed ring 11 rotatably connected inside the housing 8 and meshing with the driving gear 12, a half gear 10 rotatably connected inside the housing 8 and meshing with the toothed ring 11, and a baffle 9 fixed to one side of the half gear 10. The half gears 10 are annularly and equally spaced inside the housing 8, and the adjacent two groups of baffles 9 are staggered. By starting the driving motor 6 to drive the driving gear 12 to rotate, the driving gear 12 drives the toothed ring 11 to rotate inside the housing 8 through the teeth, and at the same time, the rotating toothed ring 11 drives the half gear 10 to rotate inside the housing 8, so that the half gear 10 drives the baffle 9 to flip, causing multiple baffles 9 to leave the inside of the housing 8 and intersect with each other, blocking the air inlet of the air inlet pipe 4, preventing the dust airflow from leaking through the air inlet pipe 4, ensuring the air quality around the device, and at the same time making it convenient for the dust airflow to enter the inside of the collection structure 14. Reversely starting the driving motor 6 makes the half gear 10 drive the baffle 9 to reset, and then the baffle 9 enters the inside of the housing 8, making the air inlet pipe 4 unobstructed.

[0037] A reverse blowing control relay 24 is detachably installed at the bottom end inside the control box 13, and a contactor 25 is detachably installed at the top end inside the control box 13;

[0038] Specifically, when the double-fed wind turbine gearbox cooling fan with an automatic cleaning device is in use: by installing a reverse blowing control relay 24 and two contactors 25 in the control circuit of the cooling motor 23, after the reverse blowing control relay 24 makes the cooling motor 23 run forward for 23 hours and 57 minutes, it controls the cooling motor 23 to move from motion to rest for 1 minute, and then controls the cooling motor 23 to reverse for 1 minute to achieve one-time reverse blowing of the fan blade 2, removing the willow catkins and dust adsorbed on the surface of the fan blade 2. Then, it uses another 1 minute to make the cooling motor 23 move from motion to rest and then resume the forward rotation of the cooling motor 23. A cycle is completed every 24 hours to ensure good cooling of the gearbox. At the same time, during the reverse blowing process, the dust and foreign matters are collected by the collection structure 14, and the isolation structure 5 seals the air inlet pipe 4 to prevent the dust and foreign matters from entering the external environment.

[0039] By starting the drive motor 6 to drive the drive gear 12 to rotate, the drive gear 12 drives the gear ring 11 to rotate inside the housing 8 through the teeth, and at the same time, the rotating gear ring 11 drives the half gear 10 to rotate inside the housing 8, so that the half gear 10 drives the baffle 9 to turn over, causing multiple groups of baffles 9 to leave the inside of the housing 8 and intersect with each other, blocking the air inlet of the air inlet pipe 4, preventing the dust airflow from leaking through the air inlet pipe 4, ensuring the air quality around the device, and at the same time making it convenient for the dust airflow to enter the inside of the collection structure 14. Reverse-start the drive motor 6 to make the half gear 10 drive the baffle 9 to reset, and then the baffle 9 enters the inside of the housing 8, making the air inlet pipe 4 unobstructed;

[0040] After the isolation structure 5 cuts off the air inlet pipe 4, the airflow generated by the back blowing is guided by the downwardly inclined air guide shell 19, so that the dust airflow pushes the wind baffle 20 to turn downwards and pass through the air guide shell 19 into the inside of the dust filter bag 15. The dust and foreign matters in the air are filtered by the dust filter bag 15, and the dust and foreign matters are collected and processed. At the same time, the volume of the dust filter bag 15 is expanded by the contraction and extension of the folding end 16 to facilitate the storage of a large amount of dust and foreign matters. By rotating the rotary cover 17, the rotary cover 17 is separated from the screw pipe 21 through the thread, which is convenient for disassembling the dust filter bag 15 for cleaning and replacement. When the cooling motor 23 is running normally, the inside of the air guide shell 19 is blocked by the wind baffle 20 to prevent the dust and foreign matters in the dust filter bag 15 from being sucked into the inside of the air inlet pipe 4. The balance of the wind baffle 20 is adjusted by the counterweight 18 to facilitate the turning and resetting of the wind baffle 20.

[0041] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A doubly-fed wind turbine gearbox cooling fan with an automatic cleaning device, comprising a mounting shell (1), characterized in that: Also includes: A heat dissipation motor (23) is installed inside one side of the installation shell (1), and a fan blade (2) is installed at the rotating end of the heat dissipation motor (23); A mounting frame (3) fixed at two ends of the mounting shell (1); A control box (13) mounted on one side of the mounting shell (1); An air inlet pipe (4) is fixed to one side of the mounting shell (1), and an isolation structure (5) is provided on one side of the air inlet pipe (4) for isolating the air inlet pipe (4); A collecting structure (14) is arranged at the bottom end of the air inlet pipe (4), wherein the collecting structure (14) comprises an air guide shell (19) fixed to the bottom end of the air inlet pipe (4), a wind shield (20) rotatably connected to one side of the inside of the air guide shell (19), a counterweight (18) fixed to one side of the bottom end of the wind shield (20), a replacement component arranged at the bottom end of the air guide shell (19), and a dust filter bag (15) arranged at the bottom end of the replacement component; The replacement assembly comprises a spiral tube (21) fixed to the outside of the air guide shell (19), a rotary cover (17) sleeved on the outside of the spiral tube (21), a connecting seat (22) arranged at the bottom end of the inside of the rotary cover (17), and a folding end (16) fixed to the bottom end of the connecting seat (22) and connected to the dust filter bag (15); The isolation structure (5) comprises a cover (8) fixed to one side of the air inlet pipe (4), a mounting seat (7) mounted on one side of the cover (8), a driving gear (12) rotatably connected to the inside of the mounting seat (7), a driving motor (6) mounted at the bottom end of the mounting seat (7) and having a rotating end connected to the driving gear (12), and a transmission assembly arranged inside the cover (8).

2. A doubly-fed wind turbine gearbox cooling fan with an automatic cleaning device according to claim 1, characterized in that: An external thread is provided on the outer wall of the spiral tube (21), and an internal thread matching the external thread is provided inside the screw cap (17).

3. A doubly-fed wind turbine gearbox cooling fan with an automatic cleaning device according to claim 1, characterized in that: The top end of the connection seat (22) is provided with an annular groove matching the bottom end of the air guide shell (19); the folding end (16) is in the shape of a hollow tubular structure with a wrinkled surface; and the folding end (16) is a retractable structure.

4. A doubly-fed wind turbine gearbox cooling fan with an automatic cleaning device according to claim 1, characterized in that: The transmission assembly comprises a ring gear (11) rotatably connected to the inside of the housing (8) and meshing with the driving gear (12), a half gear (10) rotatably connected to the inside of the housing (8) and meshing with the ring gear (11), and a baffle (9) fixed to one side of the half gear (10).

5. A doubly-fed wind turbine gearbox cooling fan with an automatic cleaning device according to claim 4, characterized in that: The half gears (10) are distributed in an annular manner at equal intervals inside the housing (8), and the baffles (9) are distributed in a staggered manner between two adjacent groups.

6. A doubly-fed wind turbine gearbox cooling fan with an automatic cleaning device according to claim 1, characterized in that: A blowback control relay (24) is detachably mounted on the bottom end of the control box (13), and a contactor (25) is detachably mounted on the top end of the control box (13).

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