Cooling device of wind driven generator

Abstract

A wind driven generator cooling device comprises a base, a generator arranged on the base and a cooling device for cooling the generator. The cooling device is an axial flow fan, the axial flow fan comprises a flow guide shell and a fan body arranged in the flow guide shell, and a scaling assembly for controlling the cold air outlet area is arranged on the flow guide shell located on the axial flow fan. The first flow guide plates are arranged in the circumferential direction of the air outlet end of the flow guide shell at intervals, the second flow guide plates are arranged in the circumferential direction of the air outlet end of the flow guide shell at intervals, the second flow guide plates are located on the inner sides of the adjacent first flow guide plates, and the first flow guide plates and the second flow guide plates are rotationally arranged on the flow guide shell; and the driving device is arranged on the flow guide shell and used for driving the first flow guide plate and the second flow guide plate to rotate. According to the utility model, by arranging the scaling assembly, the air port can be scaled when cold air is blown out, when the temperature of the generator rises, the cold air is collected through the air port of the scaling assembly and directly blows the stator and rotates to accelerate cooling, and the cooling effect of the cold air on the motor is improved while the cold air is effectively utilized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of wind power generation, especially relates to a wind driven generator cooling device. BACKGROUND

[0002] Wind power generation is a process of generating power by using wind energy, which is referred to as wind power generation. The wind driven generator is a power equipment which converts wind energy into mechanical work, and the mechanical work drives the rotor to rotate, and finally outputs alternating current. The wind power generation does not consume fossil fuels, does not produce greenhouse gases such as carbon dioxide and other pollutants, and is friendly to the environment. In the running process of the wind driven generator, a large amount of heat is generated due to mechanical friction and electric energy conversion processes. If the temperature is too high, the performance of the generator will be reduced, thereby affecting the power generation efficiency. When the temperature of the generator is increased, the generator needs to be cooled, and the existing wind machine is used for cooling. The amount of air blown by the existing wind machine through the stator and the rotor is limited, resulting in waste of part of the cold air and affecting the cooling effect of the wind machine on the generator. SUMMARY

[0003] The utility model aims at providing a wind driven generator cooling device to solve the technical problems in the background.

[0004] To achieve the above-mentioned purpose, the specific technical scheme of the wind driven generator cooling device of the utility model is as follows:

[0005] A wind driven generator cooling device, comprising a base, a generator arranged on the base, and a cooling device for cooling the generator. The cooling device is an axial flow fan, which comprises a guide shell and a fan arranged in the guide shell. A zooming assembly for controlling the cold air outlet area is arranged on the guide shell of the axial flow fan. The zooming assembly comprises first guide plates arranged at intervals in the circumferential direction of the outlet end of the guide shell, second guide plates arranged at intervals in the circumferential direction of the outlet end of the guide shell, each second guide plate is located on the inner side of the adjacent first guide plate, and the first guide plate and the second guide plate are both rotatably arranged on the guide shell, and a driving device arranged on the guide shell for driving the first guide plate and the second guide plate to rotate.

[0006] Further, the driving device comprises a support ring arranged on the guide shell through a connecting frame and an electric push rod arranged on the guide shell. A support arm is slidably arranged on the support ring corresponding to the positions of the first guide plate and the second guide plate. The support arm is connected through a fixed ring on the side close to the electric push rod, and the other side of each support arm is provided with a connecting buckle. A connecting rod is rotatably arranged on the connecting buckle, and the free end of the connecting rod is rotatably connected with the corresponding first guide plate or second guide plate. The telescopic end of the electric push rod is connected with the fixed ring.

[0007] Further, the connecting buckle is connected through a limiting ring.

[0008] Further, the air inlet of the axial flow fan is provided with a filtering part, and the filtering part comprises a shroud arranged at one end of the flow guide shell opposite the zoom assembly, and the shroud is provided with a filter screen.

[0009] Further, the filter screen and the shroud are slidingly arranged, the side wall of the shroud is provided with a placing groove for dismounting the filter screen, and the side wall of the shroud is provided with a locking assembly for limiting the filter screen.

[0010] Further, the locking assembly comprises a rotating shaft movably arranged on the shroud, and the outer side end of the rotating shaft is provided with a baffle.

[0011] Further, a plurality of teeth are distributed on the end of the baffle close to the rotating shaft, the inner side end of the rotating shaft is provided with a limiting piece, a spring is arranged on the rotating shaft and located between the limiting piece and the shroud, and a gear is arranged on the shroud and engaged with the teeth on the baffle.

[0012] The wind power generator cooling device has the following advantages:

[0013] 1. The zoom assembly is arranged, the air outlet during cold air blowing can be zoomed, when the temperature of the generator is increased, the cold air is collected through the air outlet of the zoom assembly and directly blows the stator and rotates to accelerate the cooling, the cold air is effectively utilized, and the cooling effect of the cold air on the motor is improved.

[0014] 2. The locking assembly is arranged, the filter screen can be locked, the rapid limiting of the filter screen is completed, time and labor are saved, and the operation is simple. DRAWINGS

[0015] Figure 1 It is a structural schematic view of the wind power generator cooling device.

[0016] Figure 2 It is a schematic view of the axial flow fan.

[0017] Figure 3 It is a schematic view of the driving device.

[0018] Figure 4 It is a schematic view of the supporting arm, the connecting buckle and the connecting rod.

[0019] Figure 5 It is a schematic view of the filtering part.

[0020] Figure 6 It is a schematic view of the locking assembly.

[0021] Marking in the drawing:

[0022] 1, generator; 2, axial flow fan; 201, flow guide shell; 202, fan; 3, base; 4, first flow guide plate; 5, second flow guide plate; 6, connecting frame; 7, support ring; 8, support arm; 9, connecting buckle; 10, connecting rod; 11, fixed ring; 12, limiting ring; 13, shield; 14, filter screen; 15, electric push rod; 16, placing groove; 17, rotating shaft; 18, baffle; 19, limiting piece; 20, spring; 21, tooth; 22, gear. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the utility model, the utility model of a wind driven generator cooling device is described in further detail below in combination with the drawings.

[0024] As Figures 1 to 6 shown, the utility model of a wind driven generator cooling device, including base 3, is provided with generator 1 and the cooling device that carries out cooling to generator 1 on base 3, and the cooling device is used to cool generator 1, so that generator 1 is in normal working condition, and the service life is improved. Among them, the cooling device is axial flow fan 2, and axial flow fan 2 is located at one side of generator 1, and axial flow fan 2 includes flow guide shell 201 and fan 202 connected with external power supply in flow guide shell 201, and fan 202 rotates to generate cold air flow, and the cold air flow blows to generator 1, and the cold air flow enters the inside of generator 1 through the shell of generator 1, and then flows through heating components (such as stator winding, iron core, etc.), and the heat is absorbed and discharged from the other end of the shell of generator 1, so that the heat is taken away, and the purpose of heat dissipation is achieved.

[0025] As preferred, the zooming assembly for controlling the cold air outlet area is arranged on the flow guide shell 201 of the axial flow fan 2. The cross-sectional size of the cold air when sprayed can be adjusted through the zooming assembly to adapt to the cooling treatment of the axial flow fan 2 to the generator 1 at different temperatures, and the cooling of the generator 1 by the cold air flow is effectively utilized. Specifically, the zooming assembly includes the first flow guide plate 4 arranged at intervals in the circumferential direction of the air outlet end of the flow guide shell 201, the second flow guide plate 5 arranged at intervals in the circumferential direction of the air outlet end of the flow guide shell 201, each second flow guide plate 5 is located on the inner side of the adjacent first flow guide plate 4, and the first flow guide plate 4 and the second flow guide plate 5 are both rotatably arranged on the flow guide shell 201. Among them, the adjacent first flow guide plate 4 and the second flow guide plate 5 have an overlapping portion to supplement the gap between the adjacent first flow guide plate 4 and the second flow guide plate 5, so as to prevent the cold air flow from blowing out from the gap between the adjacent first flow guide plate 4 and the second flow guide plate 5, causing waste of the cold air flow.

[0026] As Figure 1 , Figure 3 and Figure 4As shown, the first guide plate 4 and the second guide plate 5 are provided with a drive device for driving the rotation of the first guide plate 4 and the second guide plate 5. The drive device can drive the rotation of the first guide plate 4 and the second guide plate 5 on the guide shell 201. Specifically, the drive device includes a support ring 7 provided on the guide shell 201 through a connecting frame 6 and an electric push rod 15 provided on the guide shell 201. The electric push rod 15 is arranged axially along the guide shell 201, and the electric push rod 15 is arranged symmetrically with the axis of the guide shell 201. The support ring 7 and the electric push rod 15 are arranged oppositely. A support arm 8 is slidably arranged on the support ring 7 corresponding to the positions of the first guide plate 4 and the second guide plate 5, and is connected to the fixed ring 11 on the side close to the electric push rod 15. The fixed ring 11 is coaxially arranged with the support ring 7, and the extension end of the electric push rod 15 is connected to the fixed ring 11. The other side of each support arm 8 is provided with a connecting buckle 9, and the connecting buckle 9 is arranged in a C shape. A connecting rod 10 is rotatably arranged on the connecting buckle 9, and the free end of the connecting rod 10 is rotatably connected to the corresponding first guide plate 4 or second guide plate 5. When it is needed to reduce the air outlet area of the cold air, the electric push rod 15 can be started to move each support arm 8 through the fixed ring 11. When the support arm 8 moves, it will pull the connecting rod 10 through the connecting buckle 9. The connecting rod 10 drives the free end of the corresponding first guide plate 4 or second guide plate 5 to converge towards the center position under the action of the support arm 8 and the connecting buckle 9, so as to achieve the purpose of reducing the air outlet position of the zoom assembly. The cold air flow generated by the fan 202 passes through the air outlet of the zoom assembly, and then enters the inside of the generator 1 housing to directly blow the stator and rotation to complete the cooling. It should be noted that when the cold air flow passes through the air outlet of the zoom assembly, the wind speed of the cold air flow will be increased, and the temperature of the cold air flow will be reduced due to the reduction of the air outlet, which further improves the cooling effect of the generator 1. Similarly, when it is needed to adjust the air outlet of the zoom assembly to be larger, the electric push rod 15 can push the fixed ring 11 to move to the initial position. Figure 3 As shown, in order to make the support arm 8 and the connecting buckle 9 more stable on the support ring 7, the connecting buckle 9 is connected through a limiting ring 12, and the limiting ring 12 is sleeved outside the first guide plate 4 and the second guide plate 5.

[0027] As another preferred, the air inlet of the axial flow fan 2 is provided with a filtering part, and the impurities in the air can be filtered through the filtering part to prevent the impurities from entering the generator 1 and affecting its normal use. Specifically, the filtering part includes a shroud 13 provided on one end of the flow guide shell 201 opposite the zoom assembly, and the shroud 13 is provided with a filter screen 14. As a further improvement, the filter screen 14 is slidingly arranged with the shroud 13, and the side wall of the shroud 13 is provided with a placing groove 16 for dismounting the filter screen 14. The filter screen 14 can be quickly dismounted on the shroud 13 through the placing groove 16, which saves time and effort. At the same time, in order to reinforce the stability of the filter screen 14 on the shroud 13, a locking assembly is arranged on the side wall of the shroud 13 to limit the filter screen 14. The locking assembly includes a rotating shaft 17 movably arranged on the shroud 13, and the outer side end of the rotating shaft 17 is provided with a baffle 18. When the filter screen 14 needs to be dismounted, the baffle 18 is rotated and moved away from the filter screen 14, and then the filter screen 14 can be removed from the shroud 13, which is simple to operate and convenient to use. When the filter screen 14 is inserted into the placing groove 16 of the shroud 13, the baffle 18 is rotated and moved into stable contact with the filter screen 14.

[0028] In order to prevent the vibration caused by the rotation of the fan 202 from causing the baffle 18 to deviate, a plurality of teeth 21 are arranged on one end of the baffle 18 close to the rotating shaft 17, and the inner side end of the rotating shaft 17 is provided with a limiting piece 19. A spring 20 is arranged on the rotating shaft 17 between the limiting piece 19 and the shroud 13, and a gear 22 is arranged on the shroud 13 to engage with the teeth 21 on the baffle 18. The engagement of the teeth 21 on the baffle 18 with the gear 22 can prevent the baffle 18 from rotating. When the baffle 18 needs to be rotated, the baffle 18 needs to be pulled outward, and the baffle 18 compresses the spring 20 through the limiting piece 19 on the rotating shaft 17. When the teeth 21 on the baffle 18 disengage from the gear 22, the baffle 18 can be rotated through the rotating shaft 17, and after the baffle 18 is disengaged from the filter screen 14, the baffle 18 is released. The spring 20 pulls the baffle 18 on the rotating shaft 17 to move inwardly of the shroud 13 through the limiting piece 19, which is simple to operate and convenient to use.

[0029] Method for use: when the temperature of the generator 1 rises, the driving device can be started to drive the zoom assembly to work, so that the air outlet of the zoom assembly becomes smaller. The cold air flow blown out of the air outlet directly enters the shell of the generator 1 to cool the stator and rotor, thereby accelerating the heat dissipation efficiency of the generator 1, and the cold air flow generated by the fan 202 cools the generator 1, thereby reducing the waste of the cold air flow. After the air outlet of the zoom assembly is reduced, the temperature of the cold air flow flowing out is reduced, thereby improving the cooling efficiency of the generator 1 again.

[0030] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A wind power generator cooling device, characterized in that: comprising a base (3), a generator (1) arranged on the base (3) and a cooling device for cooling the generator (1); the cooling device is an axial flow fan (2), the axial flow fan (2) comprises a guide shell (201) and a fan (202) arranged in the guide shell (201), and a zoom assembly for controlling the cold air outlet area is arranged on the guide shell (201) of the axial flow fan (2); the zoom assembly comprises first guide plates (4) arranged at intervals in the circumferential direction of the outlet end of the guide shell (201), second guide plates (5) arranged at intervals in the circumferential direction of the outlet end of the guide shell (201), each second guide plate (5) is located on the inner side of the adjacent first guide plate (4), and the first guide plate (4) and the second guide plate (5) are both rotatably arranged on the guide shell (201), and a driving device is arranged on the guide shell (201) for driving the first guide plate (4) and the second guide plate (5) to rotate.

2. The wind power generator cooling device according to claim 1, characterized in that: the driving device comprises a support ring (7) arranged on the guide shell (201) through a connecting frame (6) and an electric push rod (15) arranged on the guide shell (201), a support arm (8) is slidably arranged on the support ring (7) corresponding to the positions of the first guide plate (4) and the second guide plate (5), the support arm (8) is connected through a fixed ring (11) on the side close to the electric push rod (15), and the other side of each support arm (8) is provided with a connecting buckle (9), a connecting rod (10) is rotatably arranged on the connecting buckle (9), and the free end of the connecting rod (10) is rotatably connected with the corresponding first guide plate (4) or second guide plate (5); the telescopic end of the electric push rod (15) is connected with the fixed ring (11).

3. The wind power generator cooling device according to claim 2, characterized in that: the connecting buckle (9) is connected through a limiting ring (12).

4. The wind power generator cooling device according to claim 3, characterized in that: the air inlet of the axial flow fan (2) is provided with a filtering part, and the filtering part comprises a shroud (13) arranged on one end of the guide shell (201) opposite the zoom assembly, and the shroud (13) is provided with a filter screen (14). characterized in that; the filter screen (14) and the shroud (13) are slidably arranged, the side wall of the shroud (13) is provided with a placing groove (16) for disassembling and assembling the filter screen (14), and a locking assembly is arranged on the side wall of the shroud (13) for limiting the filter screen (14). characterized in that; the locking assembly comprises a rotating shaft (17) movably arranged on the shroud (13), and a baffle (18) is arranged on the outer side end of the rotating shaft (17). a plurality of teeth (21) are distributed on the end of the baffle (18) close to the rotating shaft (17), a limiting piece (19) is arranged on the inner side end of the rotating shaft (17), a spring (20) is sleeved on the rotating shaft (17) between the limiting piece (19) and the shroud (13), and a gear (22) is arranged on the shroud (13) and engaged with the teeth (21) on the baffle (18). ​ ​ 5. A wind power generator cooling device according to claim 4, ​ ​ 6. A wind power generator cooling device according to claim 5, ​ ​ 7. A wind power generator cooling device according to claim 6, characterized in that ； ​

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