A wind turbine gearbox cooler brush type self-cleaning foreign matter recycling device

Abstract

The utility model belongs to wind driven generator cleaning technical field especially is a kind of wind driven generator unit gear box cooler brush type self-cleaning foreign matter recovery device, including radiator, the middle part of radiator is equipped with fin, the both ends of radiator are equipped with linear movement mechanism along width direction, the length direction of radiator is also equipped with the cleaning mechanism being moved by linear movement mechanism, the dust on the surface of radiator is realized the action of rolling type cleaning by cleaning mechanism, the bottom of fin is equipped with dust collection mechanism. This wind driven generator unit gear box cooler brush type self-cleaning foreign matter recovery device, by setting up cleaning mechanism, can realize the rolling type cleaning of the surface of fin, can also be in the case of immobility by linear movement drive it to do small individual moving and cleaning, can also linearly move and carry out the effect of forward and reverse cleaning, can also realize the effect of diagonal direction cleaning of fin.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current (AC). It is a clean and renewable energy source. Wind power generation does not rely on fossil fuels, causes no environmental pollution, has no fuel price risk, has stable power generation costs, and boasts vast reserves and wide distribution. In recent years, wind power installed capacity has developed rapidly, bringing significant economic and social benefits to enterprises, but it also faces some inherent equipment challenges.

[0003] Firstly, from an economic perspective, dust, willow catkins, and other foreign objects in the air enter the cooling system of wind turbines, adhering to the heat exchanger fins and causing blockages, making maintenance difficult. Blocked heat exchangers have reduced heat exchange efficiency, causing the cooling water temperature to become too high, leading to high temperature alarms and shutdowns of the wind turbine, thus affecting economic efficiency and power generation.

[0004] Secondly, from a safety perspective, the inability to dissipate heat from the nacelle in a timely manner will accelerate the aging or even failure of the generator's insulation components; at the same time, high temperatures will cause the gear oil viscosity to decrease, the lubricating oil film to become thinner, thereby weakening the lubrication and protection function; high temperatures will also accelerate the oxidation and deterioration of the gear oil, shorten the service life of the gear oil, and reduce the operating safety factor of the wind turbine generator set and increase the equipment failure rate.

[0005] There are many reasons for the temperature rise of the unit equipment, among which the continuous decline in the heat exchange capacity of the air-cooled water heat exchanger is the most common. When the air-cooled water heat exchanger is blocked, on-site maintenance personnel can only manually clean the air-cooled water heat exchanger periodically, or clean the heat sink with a high-pressure water gun. Although the blockage is resolved after multiple cleanings, it cannot fundamentally solve the problem.

[0006] Because the engine room is a non-sealed space, external dust and willow catkins can easily enter. Additionally, oil vapors from leaking ethylene glycol are present in the engine room air. Over time, dust, willow catkins, and oil vapors are drawn in by the fan and adhere to the heat exchanger. The resulting sludge-like substance can easily clog the heat exchange elements.

[0007] Currently, the common practice is to maintain the heat dissipation capacity of the heat exchanger by constantly cleaning its fins. This method brings a lot of workload to the air field. At the same time, because air-cooled water heat exchangers generally use a small corrugated plate design, they cannot be thoroughly cleaned. The cleaning cycle is getting shorter and shorter, but the difficulty is getting greater and greater. Utility Model Content

[0008] Based on existing technical problems, this utility model proposes a brush-type self-cleaning foreign matter recovery device for wind turbine gearbox cooler.

[0009] This utility model proposes a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler, which includes a radiator with heat dissipation fins installed in the middle of the radiator.

[0010] The radiator is provided with linear moving mechanisms at both ends along the width direction.

[0011] The radiator is also provided with a cleaning mechanism along its length, which is moved by the linear moving mechanism. The cleaning mechanism performs a rolling cleaning action on the surface of the radiator to remove dust.

[0012] The bottom of the heat sink is equipped with a dust collection mechanism. When the cleaning mechanism sweeps the dust off the heat sink, it is sucked away and collected by the dust collection mechanism under negative pressure.

[0013] Preferably, the linear motion mechanism includes slide grooves formed at both ends of the radiator, with a screw mounted on the inner wall of the slide groove via bearings, one end of the screw extending to the side of the radiator, and a first motor fixed to the surface of the radiator mounted on one end of the screw via a coupling.

[0014] With the above technical solution, the first motor is installed on the heat sink in a position where dust cannot come into contact with it, which can avoid both dust and the problem of heat from the heat sink being directly exposed.

[0015] Preferably, the screw has a threaded sleeve that is slidably connected to the inner wall of the groove, and the sleeve is driven by the screw to reciprocate along the inner wall of the groove.

[0016] The above technical solution makes it easy to adjust the cleaning angle of the cleaning mechanism and avoid cleaning dead spots.

[0017] Preferably, the cleaning mechanism includes a base fixedly installed on the upper surface of the screw sleeve, a turntable rotatably mounted at the center of the base via an end face bearing, and a second motor that deflects along the circumference of the base is fixedly installed on the upper surface of the turntable.

[0018] Through the above technical solution, the turntable can be easily deflected at any angle along the axis by the second motor.

[0019] Preferably, the output shafts of the two identical second motors are fixedly mounted with rotating shafts via couplings, and rollers are fixedly sleeved on the surface of the rotating shafts. The opposing surfaces of the two rollers are interlocked through spline grooves.

[0020] Through the above technical solution, the spline groove can achieve a sliding effect in the direction of the shaft axis, so as to facilitate cleaning along the diagonal direction of the heat sink.

[0021] Preferably, a brush is fixedly mounted on the surface of the roller shaft, and the roller shaft drives the brush to perform a rolling cleaning action on the surface of the heat sink.

[0022] The above technical solution allows the brushes that cross each other on the roller to enhance the dust removal effect.

[0023] Preferably, the dust collection mechanism includes a pipe with a flared top located below the heat sink, and a fan installed in the middle of the pipe to apply negative pressure to the flared end of the pipe.

[0024] Preferably, the bottom of the heat sink is provided with a dust collection mechanism. When the cleaning mechanism sweeps the dust off the heat sink, it is sucked away and collected by the dust collection mechanism under negative pressure.

[0025] The above technical solution can uniformly suck away the dust swept up by the cleaning mechanism under negative pressure, preventing the dust from falling onto other parts of the wind turbine generator.

[0026] The beneficial effects of this utility model are as follows:

[0027] 1. By setting up a linear movement mechanism, the cleaning mechanism can be moved to the side when cleaning is not required or when the radiator is working, while also achieving the maximum cleaning effect on the radiator.

[0028] 2. By setting up a cleaning mechanism, it is possible to achieve rolling cleaning of the heat sink surface. It can move linearly to clean while remaining stationary, or it can move linearly and rotate in both directions to achieve the effect of cleaning. It can also achieve the effect of cleaning the heat sink diagonally. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler proposed in this utility model.

[0030] Figure 2 This is a perspective view of the linear movement mechanism of a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler proposed in this utility model.

[0031] Figure 3 This is a perspective view of the cleaning mechanism of a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler proposed in this utility model.

[0032] Figure 4This is a perspective view of the base of a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler proposed in this utility model.

[0033] Figure 5 A perspective view of the spline groove of a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler proposed in this utility model;

[0034] Figure 6 This is a perspective view of the brush installation of a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler proposed in this utility model.

[0035] Figure 7 This utility model presents a pipeline installation diagram for a brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler.

[0036] In the diagram: 1. Radiator; 2. Heat sink; 3. Slide groove; 31. Screw; 32. First motor; 33. Screw sleeve; 4. Base; 41. Turntable; 42. Second motor; 43. Shaft; 44. Roller; 45. Spline groove; 46. Brush; 5. Pipe; 51. Fan. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0038] Reference Figure 1-7 A brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler includes a radiator 1, with heat dissipation fins 2 installed in the middle of the radiator 1. The radiator 1 is set in...

[0039] To avoid the problem of cleaning dead corners, linear movement mechanisms are provided at both ends of the radiator 1 along the width direction.

[0040] In order to achieve a contact cleaning effect on the dust on the heat sink 2, a cleaning mechanism is also provided along the length of the heat sink 1, which is moved by the linear moving mechanism. The cleaning mechanism performs a rolling cleaning action on the surface of the heat sink 1.

[0041] To avoid cleaning dead corners, the linear movement mechanism includes sliding grooves 3 at both ends of the radiator 1. A screw 31 is mounted on the inner wall of the sliding groove 3 via bearings. One end of the screw 31 extends to the side of the radiator 1, and a first motor 32, fixed to the surface of the radiator 1, is mounted on the other end of the screw 31 via a coupling. The first motor 32 is installed on the heat sink 2 in a location where dust cannot reach it, thus preventing both dust accumulation and direct heat from the heat sink 2.

[0042] Furthermore, the screw 31 is threadedly fitted with a threaded sleeve 33 that slides along the inner wall of the groove 3. The threaded sleeve 33 is driven by the screw 31 to reciprocate along the inner wall of the groove 3. This facilitates adjustment of the cleaning angle of the cleaning mechanism and avoids cleaning dead zones.

[0043] By setting a linear movement mechanism, the cleaning mechanism can be moved to the side when cleaning is not required or when the radiator is working. At the same time, it can achieve the cleaning effect of the heat sink to the maximum extent. After the two first motors 32 drive the screws 31 to be threadedly connected to the screw sleeves 33, they can drive the cleaning mechanism at the top to deflect at the cleaning angle of the dense heat sink 2, thereby avoiding the problem of cleaning dead corners.

[0044] The contact cleaning effect is achieved as follows: the cleaning mechanism includes a base 4 fixedly mounted on the upper surface of the threaded sleeve 33. A turntable 41 is rotatably mounted at the center of the base 4 via an end face bearing. A second motor 42, which deflects along the circumference of the base 4, is fixedly mounted on the upper surface of the turntable 41. The turntable 41 allows the second motor 42 to deflect at any axial angle.

[0045] Furthermore, the output shafts of the two identical second motors 42 are each fixedly mounted with a rotating shaft 43 via a coupling. A roller shaft 44 is fixedly sleeved on the surface of each rotating shaft 43, and the opposing surfaces of the two roller shafts 44 are interlocked via spline grooves 45. The spline grooves 45 enable sliding along the axial direction of the rotating shaft 43, facilitating cleaning along the diagonal direction of the heat sink 2.

[0046] Furthermore, a brush 46 is fixedly mounted on the surface of the roller 44, and the roller 44 drives the brush 46 to perform a rolling cleaning action on the surface of the heat sink 2. The brushes 46 crossing each other on the roller 44 can enhance the dust removal effect.

[0047] By setting up a cleaning mechanism, it is possible to perform rolling cleaning on the surface of the heat sink 2. It can be driven to move and clean while remaining stationary, or it can perform forward and reverse rotation cleaning while moving in a straight line. It can also achieve the effect of cleaning the heat sink 2 diagonally.

[0048] In order to prevent the dust after cleaning from contaminating the equipment of other wind turbine generators, a dust collection mechanism is provided at the bottom of the heat sink 2. When the cleaning mechanism sweeps the dust off the heat sink 2, it is sucked away and collected by the dust collection mechanism under negative pressure.

[0049] The dust collection mechanism includes a pipe 5 with a flared top located below the heat sink 2. A fan 51 is installed in the middle of the pipe 5, and the fan 51 applies negative pressure to the flared end of the pipe 5. This negative pressure can uniformly suck away the dust swept up by the cleaning mechanism, preventing dust from falling onto other components of the wind turbine generator.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler, comprising a radiator (1) and heat dissipation fins (2) installed in the middle of the radiator (1). Its features are: The radiator (1) has linear moving mechanisms at both ends along the width direction; The radiator (1) is also provided with a cleaning mechanism that is moved by the linear moving mechanism along its length. The cleaning mechanism performs a rolling cleaning action on the dust on the surface of the radiator (1). The bottom of the heat sink (2) is provided with a dust collection mechanism. When the cleaning mechanism sweeps the dust off the heat sink (2), it is sucked away and collected by the dust collection mechanism under negative pressure.

2. The brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler according to claim 1, characterized in that: The linear motion mechanism includes a slide groove (3) formed at both ends of the radiator (1). A screw (31) is mounted on the inner wall of the slide groove (3) via a bearing. One end of the screw (31) extends to the side of the radiator (1). A first motor (32) fixed to the surface of the radiator (1) is mounted on one end of the screw (31) via a coupling.

3. The brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler according to claim 2, characterized in that: The screw (31) has a threaded sleeve (33) that is slidably connected to the inner wall of the groove (3). The sleeve (33) is driven by the screw (31) to move back and forth along the inner wall of the groove (3).

4. The brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler according to claim 3, characterized in that: The cleaning mechanism includes a base (4) fixedly installed on the upper surface of the screw sleeve (33). A turntable (41) is rotatably installed at the center of the base (4) via an end face bearing. A second motor (42) that deflects along the circumference of the base (4) is fixedly installed on the upper surface of the turntable (41).

5. The brush-type self-cleaning foreign matter recovery device for a wind turbine generator gearbox cooler according to claim 4, characterized in that: The output shafts of the two second motors (42) of the same model are fixedly mounted with rotating shafts (43) by couplings. Roller shafts (44) are fixedly sleeved on the surface of the rotating shafts (43). The opposing surfaces of the two roller shafts (44) are connected to each other by a spline groove (45).

6. The brush-type self-cleaning foreign matter recovery device for a wind turbine generator gearbox cooler according to claim 5, characterized in that: A brush (46) is fixedly installed on the surface of the roller (44), and the brush (46) is driven by the roller (44) to perform a rolling cleaning action on the surface of the heat sink (2).

7. The brush-type self-cleaning foreign matter recovery device for a wind turbine gearbox cooler according to claim 1, characterized in that: The dust collection mechanism includes a pipe (5) with a flared top located below the heat sink (2). A fan (51) is installed in the middle of the pipe (5), and the fan (51) applies negative pressure to the flared top of the pipe (5).

Images