Vertical shaft speed-increasing power generation type fan system

Abstract

A vertical shaft speed-increasing power generation type fan system relates to the technical field of wind power generation and comprises a tower, a cabin, a generator assembly, a transmission assembly and a wind wheel assembly. The cabin is provided with a plurality of ventilation windows which are arranged at intervals in the circumferential direction of the cabin, and the cabin is installed at the top of the tower; the generator assembly is mounted in the cabin; an input shaft of the generator assembly is connected with the wind wheel assembly through the transmission assembly, and the wind wheel assembly is used for rotating under the action of wind power and transmitting torque to the generator assembly through the transmission assembly. The speed-increasing power generation assembly has both protection and ventilation effects, a cooling mechanism is omitted while the protection of the speed-increasing power generation assembly is improved, and the product manufacturing and quality maintenance cost is effectively reduced; meanwhile, transmission shaft length can be shortened, and power generation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field, specifically, a kind of vertical axis speed increasing power generation type fan system. BACKGROUND

[0002] In prior art, the vertical axis speed increasing power generation type fan structure of wind power generation, its speed increasing box power generation assembly mainly has two arrangement forms, the first arrangement scene: speed increasing box power generation assembly is built-in in the closed cabin, although cabin protection performance is good, but speed increasing box power generation assembly is in the relatively closed space, it is not convenient to dissipate heat, need to be matched with external cooling mechanism, cost is higher, the second arrangement scene: speed increasing box power generation assembly is directly exposed in wind field, although it can be cooled using external natural wind, but protection performance is poor, there is external damage failure risk, service life is shortened.Such, the speed increasing box power generation assembly of existing vertical axis speed increasing power generation type fan structure cannot consider protection and ventilation effect, that is, cannot simultaneously meet the demand of high protection and good ventilation effect.

[0003] In addition, speed increasing box power generation assembly is arranged on ground, although it is convenient to maintain, but very long transmission shaft is needed to connect top wind wheel and ground speed increasing box input power, greatly increase cost, reduce power generation efficiency. SUMMARY

[0004] The utility model aims to, for example, provide a kind of vertical axis speed increasing power generation type fan system, it can consider protection and ventilation effect, while improving the protection of speed increasing power generation assembly, cooling mechanism is saved, effectively reduce product manufacturing and quality maintenance cost;It can also shorten the length of transmission shaft, improve power generation efficiency.

[0005] The embodiment of the utility model can be realized as follows:

[0006] In the first aspect, the utility model provides a kind of vertical axis speed increasing power generation type fan system, including tower, cabin, generator assembly, transmission assembly and wind wheel assembly, wherein:

[0007] The cabin is provided with a plurality of ventilation windows arranged at intervals in its circumferential direction, and the cabin is installed on the top of the tower;The generator assembly is installed in the cabin;The input shaft of the generator assembly is connected with the wind wheel assembly through the transmission assembly, and the wind wheel assembly is used to rotate under the action of wind force and transmit torque to the generator assembly through the transmission assembly.

[0008] In an optional embodiment, the bottom of the generator assembly has a spacing with the bottom of the cabin.

[0009] In an optional embodiment, the input shaft of the generator assembly is drivingly connected with the transmission assembly through a universal joint.

[0010] In an optional embodiment, the transmission assembly comprises a bearing seat, a self-aligning bearing, a thrust bearing, an oil separation ring and a transmission shaft; the bearing seat is installed on the top of the cabin, the self-aligning bearing, the oil separation ring and the thrust bearing are sequentially installed in the cabin, the oil separation ring separates the bearing seat into a first lubricating cavity and a second lubricating cavity arranged in the axial direction of the bearing seat, the self-aligning bearing is located in the first lubricating cavity, and the thrust bearing is located in the second lubricating cavity; the transmission shaft is simultaneously arranged through the self-aligning bearing, the oil separation ring and the thrust bearing, and the transmission shaft penetrates through the bearing seat and is supported by the thrust bearing.

[0011] The transmission shaft is simultaneously connected to the generator assembly and the wind wheel assembly.

[0012] In an optional embodiment, the oil separation ring is fixed to the transmission shaft, an outer circumferential surface of the oil separation ring has an annular spacing with an inner circumferential surface of the bearing seat, and the outer circumferential surface of the oil separation ring is provided with a first annular sealing groove surrounding an axis of the oil separation ring.

[0013] In an optional embodiment, the transmission assembly further comprises a sealing end cover, a first sealing ring and a second sealing ring; the sealing end cover is sleeved on the outside of the transmission shaft and fixed to the top end of the bearing seat, the sealing end cover has an annular spacing with the transmission shaft, and an inner circumferential surface of the sealing end cover is provided with a second annular sealing groove; the transmission shaft is provided with a mounting step, and the first sealing ring is clamped between the sealing end cover and the mounting step.

[0014] The bearing seat is provided with an assembly hole communicating with the second lubricating cavity, the transmission shaft is arranged through the assembly hole and has an annular spacing with a hole wall of the assembly hole, and an outer circumferential surface of the transmission shaft is provided with a spiral oil return groove located in the assembly hole, the spiral oil return groove being used for guiding lubricating medium in the assembly hole towards the second lubricating cavity.

[0015] The second sealing ring is sleeved on the outside of the transmission shaft and located outside the assembly hole, and the second sealing ring is in contact with a side surface of the bearing seat connected to the cabin.

[0016] In an optional embodiment, the vertical-shaft speed-increased power generation type wind turbine system further comprises a brake, the brake being fixed to the bearing seat and surrounding the sealing end cover; an outer circumferential surface of the transmission shaft is integrated with a brake disc, the brake disc is matched with the brake, and the brake is used for locking or releasing the brake disc.

[0017] In an optional embodiment, the wind wheel assembly comprises a wind wheel body and a wind wheel rotating shaft, and the wind wheel body is installed on the wind wheel rotating shaft; the wind wheel rotating shaft is provided with a positioning through hole.

[0018] The transmission shaft is provided with a connecting flange, the transmission shaft is arranged in the positioning through hole, and the connecting flange is fixedly connected with the wind wheel rotating shaft.

[0019] In an optional embodiment, the wind wheel rotating shaft comprises a plurality of shaft shells, the plurality of shaft shells are sequentially spliced, and an annular splicing joint is formed at a splicing position of adjacent shaft shells; the transmission shaft is externally provided with a positioning step, the transmission shaft is externally sleeved with a supporting ring, and the supporting ring is carried by the positioning step; the transmission shaft is arranged in the plurality of shaft shells, and the supporting ring shields the annular splicing joint.

[0020] In an optional embodiment, the wind wheel body has a first side and a second side arranged opposite in the axial direction of the wind wheel rotating shaft, and the nacelle is located between the first side and the second side.

[0021] The beneficial effects of the embodiments of the utility model include, for example:

[0022] To sum up, the vertical shaft speed-increasing power generation type fan system provided by the embodiment can reduce the distance between the generator assembly and the wind wheel assembly in the nacelle, thereby shortening the transmission path of the transmission assembly, reducing the assembly difficulty, improving the assembly efficiency, and improving the transmission efficiency. At the same time, the nacelle is provided with ventilation windows around, and in the running process, under the action of natural wind, external air can enter the inside of the nacelle, so as to extrude the air inside the nacelle, and the inside of the nacelle is cooled by natural wind, without the need to set up a matching cooling mechanism, so as to simplify the structure and save the processing and manufacturing cost. In this way, the nacelle can not only play a role in protecting the generator assembly, but also play a role in cooling the generator assembly, and the function is diversified. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 It is a schematic view of the vertical shaft speed-increasing power generation type fan system of the embodiment;

[0025] Figure 2 It is a schematic view of the nacelle of the embodiment;

[0026] Figure 3 It is a partial sectional view of the vertical shaft speed-increasing power generation type fan system of the embodiment;

[0027] Figure 4 Fig. 1 is a schematic view of a wind turbine according to an embodiment of the present application; Figure 3 Fig. 2 is a partial enlarged schematic view of A in Fig. 1;

[0028] Figure 5 Fig. 3 is a partial schematic view of a transmission shaft according to an embodiment of the present application;

[0029] Figure 6 Fig. 4 is a schematic view of an oil separation ring according to an embodiment of the present application;

[0030] Figure 7 Fig. 5 is a schematic view of a transmission assembly according to an embodiment of the present application; Figure 3 Fig. 6 is a partial enlarged schematic view of B in Fig. 5;

[0031] Figure 8 Fig. 7 is a partial schematic view of a transmission shaft according to a deformation example of the present application;

[0032] Figure 9 Fig. 8 is a partial schematic view of a transmission assembly according to a deformation example of the present application.

[0033] Fig. 9 is a schematic view of a brake according to an embodiment of the present application;

[0034] 100-tower; 200-nacelle; 201-first port; 202-second port; 210-main housing; 220-ventilation window; 230-support fixing plate; 240-transverse reinforcing plate; 250-longitudinal reinforcing plate; 300-generator assembly; 400-transmission assembly; 410-universal joint; 420-bearing seat; 421-first lubricating cavity; 422-second lubricating cavity; 423-first grease injection hole; 424-first grease discharge hole; 425-second grease injection hole; 426-second grease discharge hole; 430-angular contact bearing; 440-thrust bearing; 450-oil separation ring; 451-first annular sealing groove; 460-transmission shaft; 461-positioning step; 462-first mounting step; 463-second mounting step; 464-third mounting step; 465-helical oil return groove; 466-brake disc; 467-connection flange; 468-main shaft; 469-hollow shaft; 470-sealing end cover; 471-second annular sealing groove; 480-first sealing ring; 490-second sealing ring; 491-separation ring; 492-distance ring; 493-middle sealing ring; 500-wind wheel assembly; 510-wind wheel body; 511-first side; 512-second side; 520-wind wheel rotating shaft; 521-shaft housing; 530-support ring; 600-brake. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0037] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, if the terms "first", "second" and the like appear, they are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0040] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0041] Please refer to Figures 1-9 The embodiment provides a vertical shaft speed-increasing power generation type fan system, which comprises a tower 100, a cabin 200, a generator assembly 300, a transmission assembly 400 and a wind wheel assembly 500. The cabin 200 is provided with a plurality of ventilation windows 220 arranged at intervals in the circumferential direction of the cabin 200, and the cabin 200 is installed at the top of the tower 100; the generator assembly 300 is installed in the cabin 200; the input shaft of the generator assembly 300 is connected with the wind wheel assembly 500 through the transmission assembly 400, and the wind wheel assembly 500 is used for rotating under the action of wind force and transmitting torque to the generator assembly 300 through the transmission assembly 400.

[0042] As described above, the working mode of the vertical axis speed-increasing power generation type fan system provided by the embodiment is as follows:

[0043] After the assembly is completed, the wind wheel assembly 500 operates under the action of wind, thereby generating torque, which is transmitted to the generator assembly 300 through the transmission assembly 400, and drives the generator assembly 300 to operate and generate electricity. During the power generation process, the generator assembly 300 generates heat, and the four sides of the nacelle 200 are provided with ventilation windows 220, under the action of natural wind, external air can enter the inside of the nacelle 200, thereby extruding the air inside the nacelle 200, and cooling the inside of the nacelle 200 through natural wind, without the need to set up a matching cooling mechanism, simplifying the structure and saving the processing and manufacturing cost. In this way, the nacelle 200 can not only play a role in protecting the generator assembly 300, but also play a role in cooling the generator assembly 300, and the functions are diversified. At the same time, the nacelle 200 is arranged at the top of the tower 100, the distance between the generator assembly 300 installed in the nacelle 200 and the wind wheel assembly 500 is short, and the transmission path of the transmission assembly 400 is short, so the transmission efficiency is high.

[0044] The following embodiments illustrate the details of the vertical axis speed-increasing power generation type fan system of the application in an exemplary manner.

[0045] Please refer to Figure 1 and Figure 3 In the embodiment, optionally, the vertical axis speed-increasing power generation type fan system comprises a tower 100, a nacelle 200, a generator assembly 300, a transmission assembly 400, a wind wheel assembly 500 and a brake 600. The nacelle 200 is installed on the tower 100, the generator assembly 300 is installed in the nacelle 200, the transmission assembly 400 is connected to the generator assembly 300 and the wind wheel assembly 500 at the same time, and the brake 600 is used to limit the rotation of the wind wheel assembly 500 when the wind is too large to meet the power generation requirement, thereby improving the safety of the system operation.

[0046] The tower 100 plays a role in supporting and positioning, the bottom thereof can be fixed to the ground and vertically extended, and the top thereof is used for installing the nacelle 200. The structural form and height of the tower 100 are designed as required, and are not specifically limited in the embodiment.

[0047] Please refer to Figure 2 and Figure 3Optionally, the cabin 200 comprises a main shell 210, a plurality of ventilation windows 220, a support fixing plate 230, a transverse reinforcing plate 240 and a longitudinal reinforcing plate 250. The main shell 210 is generally a rectangular shell, and the main shell 210 has opposite first and second ports 201 and 202, which can be provided as flange interfaces. The ventilation windows 220 are arranged on the four sides of the main shell 210, and the ventilation windows 220 can realize the convection of air inside and outside the main shell 210, thereby reducing the temperature inside the cabin 200 by natural wind. The ventilation windows 220 can be provided as waterproof shutters. The ventilation windows 220 can be directly integrated with the main shell 210 or fixed to the main shell 210 by bolts or other structural members. The support fixing plate 230 can be welded inside the main shell 210, and the support fixing plate 230 has a spacing from the first and second ports 201 and 202. The number of the transverse reinforcing plate 240 and the longitudinal reinforcing plate 250 can be multiple, and the transverse reinforcing plate 240 and the longitudinal reinforcing plate 250 can be fixed to the outer side of the main shell 210 by welding. The transverse reinforcing plate 240 and the longitudinal reinforcing plate 250 are arranged in a cross manner, which can effectively strengthen the structural strength of the main shell 210.

[0048] In addition, the second port 202 of the main shell 210 can be fixed to the top of the tower 100 by bolts. After the main shell 210 is installed on the tower 100, the first port 201 is located above the second port 202.

[0049] Optionally, the generator assembly 300 is installed in the main shell 210, and the bottom of the generator assembly 300 can be fixed to the support fixing plate 230 by bolts or other structural members. In addition, the bottom of the generator assembly 300 has a spacing from the bottom of the main shell 210, and the four sides of the generator assembly 300 have an annular spacing from the four sides of the main shell 210. In this way, the generator assembly 300 is generally designed to be suspended, and the contact area between the generator assembly 300 and the main shell 210 is small. The ventilation channel formed in the main shell 210 has a large area, and under the action of natural wind, the external air enters the main shell 210 and has a large contact area with the generator assembly 300, thereby having a high heat exchange efficiency.

[0050] It should be understood that the structure of the generator assembly 300 can refer to the existing technical structure, and the specific limitation is not performed in the present embodiment. When the generator assembly 300 is installed in the cabin 200, the input shaft of the generator assembly 300 extends vertically and can rotate around the vertical axis, thereby transmitting the torque to the inside of the generator assembly 300.

[0051] Please refer to Figures 3-7In the embodiment, the transmission assembly 400 includes a universal joint 410, a bearing seat 420, a self-aligning bearing 430, a thrust bearing 440, an oil separation ring 450, a transmission shaft 460, a sealing end cover 470, a first sealing ring 480, and a second sealing ring 490. The bearing seat 420 can be fixed to the first port 201 of the main housing 210 by bolts or the like. The self-aligning bearing 430, the oil separation ring 450, and the thrust bearing 440 are arranged in sequence and are located in the bearing seat 420, that is, the oil separation ring 450 is located between the self-aligning bearing 430 and the thrust bearing 440. The oil separation ring 450 separates the bearing seat 420 to form a first lubricating cavity 421 and a second lubricating cavity 422 arranged in the vertical direction. The first lubricating cavity 421 and the second lubricating cavity 422 are independent of each other, and the first lubricating cavity 421 is located above the second lubricating cavity 422. Due to the design of the oil separation ring 450, the probability of the lubricating medium in the first lubricating cavity 421 entering the second lubricating cavity 422 under the action of gravity can be reduced. The transmission shaft 460 penetrates the self-aligning bearing 430, the oil separation ring 450, and the thrust bearing 440, and the bottom end of the transmission shaft 460 penetrates the bearing seat 420 and is supported by the top of the thrust bearing 440. One end of the universal joint 410 is fixed to the bottom end of the transmission shaft 460, and the other end of the universal joint 410 is fixed to the input shaft of the generator assembly 300. The transmission shaft 460 is connected with the wind wheel assembly 500. The sealing end cover 470 is sleeved outside the transmission shaft 460, and the sealing end cover 470 can be fixed to the top of the bearing seat 420 by bolts or the like. The first sealing ring 480 and the second sealing ring 490 are both sleeved outside the transmission shaft 460. The first sealing ring 480 is located at the top of the sealing end cover 470 and is used to seal the top of the bearing seat 420 to prevent the lubricating medium from leaking from the top of the bearing seat 420. The second sealing ring 490 is located at the bottom of the bearing seat 420 and is clamped between the bottom of the bearing seat 420 and the top of the universal joint 410, and is used to seal the bottom of the bearing seat 420 to prevent the lubricating medium from leaking from the bottom of the bearing seat 420.

[0052] It should be noted that the torque of the transmission shaft 460 is transmitted to the generator assembly 300 through the universal joint 410, which effectively avoids the deformation of the transmission shaft 460 directly transmitted to the generator assembly 300 to cause unbalanced load, significantly reduces the centering accuracy requirement of the cabin 200 and the bearing seat 420, effectively improves the processing and manufacturing cost, and reduces the assembly difficulty.

[0053] In addition, the number of self-aligning bearings 430 can be two, and the two self-aligning bearings 430 are arranged at intervals. The cooperation of the two self-aligning bearings 430 can improve the stability of the transmission shaft 460. Both of the two self-aligning bearings 430 are located in the first lubricating cavity 421. The axial positions of the two self-aligning bearings 430 can be limited by a distance ring 492.

[0054] Specifically, the bearing seat 420 is internally provided with a first assembly hole, a second assembly hole and a third assembly hole which are sequentially communicated. The first assembly hole, the second assembly hole and the third assembly hole can all be circular holes and coaxially arranged, and the hole diameters of the first assembly hole, the second assembly hole and the third assembly hole sequentially decrease. Meanwhile, the peripheral wall of the bearing seat 420 is provided with two first grease injection holes 423, two first grease discharge holes 424, one second grease injection hole 425 and one second grease discharge hole 426. The oil separation ring 450 is located in the second assembly hole, and the upper area of the oil separation ring 450 is a first lubricating cavity 421. The two first grease injection holes 423 and the two first grease discharge holes 424 are all communicated with the first lubricating cavity 421. The two first grease injection holes 423 are respectively matched with the two angular ball bearings 430, and are used for supplementing the lubricating grease in the two angular ball bearings 430. The two first grease discharge holes 424 are respectively matched with the two angular ball bearings 430, and are used for replacing the lubricating grease. The lower part of the oil separation ring 450 is a second lubricating cavity 422. The second grease injection hole 425 and the second grease discharge hole 426 are both communicated with the second lubricating cavity 422 and matched with the thrust bearing 440. The second grease injection hole 425 can supplement the lubricating grease for the thrust bearing 440. Correspondingly, the second grease discharge hole 426 is used for replacing the lubricating grease of the thrust bearing 440.

[0055] It is worth noting that the two angular ball bearings 430 are both fixed in the first assembly hole, and the thrust bearing 440 is fixed in the second assembly hole. The lower part of the thrust bearing 440 is in contact with the inner bottom wall of the bearing seat 420. The sealing end cover 470 is fixed on the top of the first assembly hole, and is used for sealing the first assembly hole.

[0056] Optionally, the outer peripheral surface of the oil separation ring 450 is provided with a plurality of first annular sealing grooves 451 around the axis thereof. The plurality of first annular sealing grooves 451 are arranged at intervals in the axial direction of the oil separation ring 450. The oil separation ring 450 has an annular gap with the hole wall of the second assembly hole, and forms a labyrinth sealing structure through cooperation of the plurality of first annular sealing grooves 451. This not only ensures the sealing performance, but also ensures that the oil separation ring 450 does not directly contact the bearing seat 420 when the oil separation ring 450 rotates with the transmission shaft 460, so that the friction is small, the starting resistance torque can be significantly reduced, and the sealing maintenance-free requirement can be met. The oil separation ring 450 can be screwed and fixed on the outside of the transmission shaft 460, and the position of the oil separation ring 450 is stable and reliable.

[0057] Optionally, the sealing end cover 470 can be fixed on the top of the bearing seat 420 by a bolt or other structural member. The sealing end cover 470 has a fourth assembly hole, and the sealing end cover 470 is sleeved outside the transmission shaft 460 by using the fourth assembly hole. A plurality of second annular sealing grooves 471 can be arranged on the hole wall of the fourth assembly hole, and the plurality of second annular sealing grooves 471 are arranged at intervals in the axial direction of the fourth assembly hole. When the sealing end cover 470 is sleeved outside the transmission shaft 460, the plurality of second annular sealing grooves 471 cooperatively form a labyrinth sealing structure, which has good sealing performance. In addition, the hole wall of the fourth assembly hole has an annular gap with the outer circumferential surface of the transmission shaft 460, and the transmission shaft 460 does not directly contact the sealing end cover 470 when rotating relative to the sealing end cover 470, thereby reducing the friction force and significantly reducing the starting torque, thereby meeting the sealing maintenance-free requirement.

[0058] Please refer to Figure 8 In some embodiments, optionally, the bearing seat 420 is further provided with a spacer ring 491, a distance ring 492 and a middle sealing ring 493. The spacer ring 491 is sleeved and fixed outside the transmission shaft 460 and located between the two angular contact bearings 430, thereby limiting the axial position of the two angular contact bearings 430. The distance ring 492 is fixed in the bearing seat 420 and sleeved outside the bearing shaft, and the distance ring 492 has an annular gap with the transmission shaft 460. The middle sealing ring 493 is fixed in the bearing seat 420 and carried by the distance ring 492. The middle sealing ring 493 is sleeved outside the spacer ring 491, and the middle sealing ring 493 has an annular gap with the spacer ring 491, thereby reducing the friction force. In addition, the inner circumferential surface of the middle sealing ring 493 is provided with a plurality of annular sealing grooves, and the plurality of annular sealing grooves cooperatively form a non-contact labyrinth sealing structure with the spacer ring 491, thereby achieving the sealing function. In this way, the open bearing can form an independent sealing structure, which is convenient for separate sealing maintenance and lubricant storage, avoids the loss of lubricant under the action of gravity, and ensures the effective sealing lubrication of the open bearing.

[0059] Please refer to Figure 4 、 Figure 5 and Figure 7Optionally, the diameters of the partial shaft sections of the transmission shaft 460 are different, and the transmission shaft 460 forms a step at the connection position of the two adjacent shaft sections with different diameters, so that the outer circumferential surface of the transmission shaft 460 is provided with a plurality of upward positioning steps 461 and a plurality of downward mounting steps. The number of the positioning steps 461 is designed as required, and is not specifically limited in the embodiment. The number of the mounting steps can be three, and the first mounting step 462, the second mounting step 463 and the third mounting step 464 are sequentially arranged from top to bottom. During assembly, the bottom of the transmission shaft 460 passes through the sealing end cover 470, the two self-aligning bearings 430, the oil separation ring 450, the thrust bearing 440 and the third assembly hole, the first sealing ring 480 is clamped between the first mounting step 462 and the sealing end cover 470, the top of the upper self-aligning bearing 430 is in contact with the second mounting step 463, the oil separation ring 450 is screwed and fixed to the shaft section of the transmission shaft 460 below the third mounting step 464, and the oil separation ring 450 is in contact with the third mounting step 464.

[0060] Further, the shaft section of the transmission shaft 460 below the third mounting step 464 is provided with a spiral oil return groove 465, the spiral oil return groove 465 extends in a spiral line around the axis of the transmission shaft 460, and the spiral oil return groove 465 is located in the third assembly hole. When the transmission shaft 460 rotates in the set direction, the spiral oil return groove 465 can guide the lubricating medium in the third assembly hole into the second lubricating cavity 422, thereby reducing the risk of leakage of the lubricating medium from the third assembly hole. When the fan system is installed, the transmission shaft 460 is installed to rotate in the set direction, and the set direction is a determined direction, that is, when the fan system is designed, the transmission shaft 460 can only rotate clockwise or counterclockwise during operation, and cannot switch between clockwise and counterclockwise directions.

[0061] Please refer to Figure 7Further, the outer circumferential surface of the transmission shaft 460 is integrated with a brake disc 466 and a connecting flange 467. The brake disc 466 can be a disc and is located above the first mounting step 462. The connecting flange 467 can be a circular flange and is located above the brake disc 466 and is used to connect with the wind wheel assembly 500. The brake 600 is fixed on the bearing seat 420 and is close to the top of the first mounting hole. The brake disc 466 cooperates with the brake 600, and the brake 600 is used to lock or release the brake disc 466. That is, during normal operation of the transmission shaft 460, the brake disc 466 is not locked by the brake 600, and the transmission shaft 460 can rotate under the drive of the wind wheel assembly 500, so as to generate electricity by the generator assembly 300. When the wind is too strong or other factors cause the electricity generation to be unnecessary, the brake 600 is started to clamp the brake disc 466, the brake disc 466 is locked and cannot rotate, and the transmission shaft 460 cannot rotate, thereby improving safety. In addition, since the brake 600 is installed on the top of the bearing seat 420 and is located outside the nacelle 200, it has good heat dissipation; and the sealing end cover 470 located on the top of the bearing seat 420 is protected by the surrounding sealing end cover 470.

[0062] It should be noted that the first sealing ring 480 and the second sealing ring 490 can be V-shaped sealing rings.

[0063] Please refer to Figure 9 In some embodiments, the transmission shaft 460 can be optionally provided in a split structure. For example, the transmission shaft 460 includes a main shaft 468 and a hollow shaft 469. The main shaft 468 is inserted into the aligning bearing 430 and the thrust bearing 440, and the brake disc 466 and the connecting flange 467 are integrated on the main shaft 468. The hollow shaft 469 is inserted into the top of the main shaft 468 and is limited by a stopper. The hollow shaft 469 can be fixed to the main shaft 468 by bolts or welding. The hollow shaft 469 cooperates with the wind wheel assembly 500. The split design reduces the length-diameter ratio of the transmission shaft 460, reduces the manufacturing and processing difficulty, and reduces the manufacturing cost. In addition, the hollow shaft 469 can reduce the consumption of materials and further reduce the cost.

[0064] Please refer to Figure 1 and Figure 7 In the present embodiment, the wind wheel assembly 500 includes a wind wheel body 510, a wind wheel rotating shaft 520, and a support ring 530. The number of the wind wheel body 510 can be multiple. The multiple wind wheel bodies 510 are fixed to the wind wheel rotating shaft 520 and are uniformly and spacedly arranged around the axis of the wind wheel rotating shaft 520. For example, in the present embodiment, the number of the wind wheel body 510 is three. The wind wheel rotating shaft 520 is fixedly connected with the transmission shaft 460. The support ring 530 is connected with the wind wheel rotating shaft 520 and the transmission shaft 460 and plays a role of stabilizing and reinforcing.

[0065] Optionally, the wind wheel rotating shaft 520 comprises a plurality of shaft shells 521, the end portions of the plurality of shaft shells 521 are sequentially spliced, and the end portions of adjacent shaft shells 521 can be fixedly connected through a flange structure. An annular spliced joint is formed at the connection position of any adjacent shaft shell 521. When the top portion of the transmission shaft 460 is inserted into the plurality of shaft shells 521, a positioning step 461 is correspondingly arranged at the connection position of any adjacent shaft shell 521. The support ring 530 is sleeved outside the transmission shaft 460 and is carried by the positioning step 461. In this way, the position of the support ring 530 can be positioned by the positioning step 461, the accuracy of the position of the support ring 530 is improved, the installation efficiency is improved, and after the support ring 530 is installed, the annular spliced joint is shielded at the spliced position of the adjacent shaft shells 521, and the structural strength at the connection position of the shaft shells 521 is improved.

[0066] Moreover, since part of the transmission shaft 460 is inserted into the shaft shell 521, the structural strength of the shaft shell 521 is improved, the shaking and noise of the wind wheel rotating shaft 520 at high speed under large wind force are effectively improved, and the structural reliability is ensured.

[0067] It should be understood that when the transmission shaft 460 is designed as a split structure, the main shaft 468 is connected with the shaft shell 521 through a flange structure, the hollow shaft 469 is inserted into the shaft shell 521, and the support ring 530 is sleeved outside the hollow shaft 469.

[0068] It is worth noting that the wind wheel body 510 is generally long strip-shaped, the length direction of the wind wheel body 510 extends in the axial direction of the wind wheel rotating shaft 520, the wind wheel body 510 has a first side 511 and a second side 512 which are relatively arranged in the axial direction of the wind wheel rotating shaft 520, and the nacelle 200 is located between the first side 511 and the second side 512. For example, the nacelle 200 is generally located at the middle position of the wind wheel body 510 in the length direction thereof, and the stability during operation is high.

[0069] The vertical axis speed-increasing power generation type fan system provided by the embodiment has the ventilating window 220 arranged around the cabin 200, and the generator assembly 300 is hung in the cabin 200, so that the cabin 200 can protect the generator assembly 300 well, and the internal air and the external air of the cabin 200 can form a convection under the action of natural wind, so that the heat loss of the cabin 200 is accelerated, and the temperature of the generator assembly 300 is prevented from being too high. In addition, the cabin 200 is located at the top of the tower 100, the cost of the very long transmission shaft 460 is saved, and the power generation efficiency is improved; meanwhile, the universal coupling 410 is used to connect the transmission shaft 460 and the generator assembly 300, so that the deformation of the transmission shaft 460 is effectively avoided from being directly transmitted to the generator assembly 300 to cause the load deviation, the installation centering precision requirement of the cabin 200 and the bearing seat 420 is significantly reduced, the processing manufacturing cost is effectively improved, and the assembly difficulty is reduced. Meanwhile, the self-aligning bearing 430 and the thrust roller bearing are used in cooperation, and the grease injection hole and the grease discharge hole are arranged to ensure the replacement and maintenance of the lubricating grease, so that the bearing roller can be effectively prevented from being frequently knocked due to the external wind load change, and the load deviation problem caused by the deformation of the transmission shaft 460 can be self-aligned and improved. The non-contact labyrinth seal and the spiral oil return groove 465 are used, and the V-shaped sealing ring is additionally used for sealing, so that the starting resistance torque can be significantly reduced, and the maintenance-free requirement of the seal can be met. The support ring 530 is arranged between the wind wheel rotating shaft 520 and the transmission shaft 460, and the top of the transmission shaft 460 extends into the wind wheel rotating shaft 520, so that the structural rigidity can be significantly improved, the shaking and noise under the high wind and high speed can be effectively improved, and the structural reliability can be ensured.

[0070] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vertical axis speed-increasing power generation type fan system, characterized by, The vertical axis speed-increasing generator type fan system comprises a tower (100), a nacelle (200), a generator assembly (300), a transmission assembly (400) and a wind wheel assembly (500), wherein: The nacelle (200) is provided with a plurality of ventilation windows (220) arranged at intervals in the circumferential direction thereof, the nacelle (200) is mounted on the top of the tower (100), the generator assembly (300) is mounted in the nacelle (200), the input shaft of the generator assembly (300) is connected with the wind wheel assembly (500) through the transmission assembly (400), and the wind wheel assembly (500) is used for rotating under the action of wind and transmitting torque to the generator assembly (300) through the transmission assembly (400).

2. The vertical axis speed-increasing generator type fan system according to claim 1, wherein: The bottom of the generator assembly (300) has a spacing with the bottom of the nacelle (200).

3. The vertical axis speed-increasing generator type fan system according to claim 1, wherein: The input shaft of the generator assembly (300) is drivingly connected with the transmission assembly (400) through a universal joint (410).

4. The vertical axis speed-increasing generator type fan system according to claim 1, wherein: The transmission assembly (400) comprises a bearing seat (420), a self-aligning bearing (430), a thrust bearing (440), an oil separation ring (450) and a transmission shaft (460), the bearing seat (420) is mounted on the top of the nacelle (200), the self-aligning bearing (430), the oil separation ring (450) and the thrust bearing (440) are sequentially mounted in the nacelle (200), the oil separation ring (450) separates the bearing seat (420) to form a first lubricating cavity (421) and a second lubricating cavity (422) arranged in the axial direction of the bearing seat (420), the self-aligning bearing (430) is located in the first lubricating cavity (421), and the thrust bearing (440) is located in the second lubricating cavity (422); the transmission shaft (460) is simultaneously provided in the self-aligning bearing (430), the oil separation ring (450) and the thrust bearing (440), the transmission shaft (460) penetrates through the bearing seat (420) and is carried by the thrust bearing (440); The transmission shaft (460) is simultaneously connected with the generator assembly (300) and the wind wheel assembly (500).

5. The vertical axis speed-increasing generator type fan system according to claim 4, wherein: The oil separation ring (450) is fixed to the transmission shaft (460), the outer circumferential surface of the oil separation ring (450) has an annular spacing with the inner circumferential surface of the bearing seat (420), and a first annular sealing groove (451) surrounding the axis of the oil separation ring (450) is arranged on the outer circumferential surface of the oil separation ring (450).

6. The vertical axis speed-increasing generator type fan system according to claim 4, wherein: The transmission assembly (400) further comprises a sealing end cover (470), a first sealing ring (480) and a second sealing ring (490); the sealing end cover (470) is sleeved on the outside of the transmission shaft (460) and fixed to the top end of the bearing seat (420), the sealing end cover (470) and the transmission shaft (460) have an annular gap, and the inner circumferential surface of the sealing end cover (470) is provided with a second annular sealing groove (471); the transmission shaft (460) is provided with a mounting step, and the first sealing ring (480) is clamped between the sealing end cover and the mounting step; The bearing seat (420) is provided with an assembly hole communicating with the second lubricating cavity (422), the transmission shaft (460) is arranged in the assembly hole and has an annular gap with the hole wall of the assembly hole; the outer circumferential surface of the transmission shaft (460) is provided with a spiral oil return groove (465) located in the assembly hole, and the spiral oil return groove (465) is used for guiding the lubricating medium in the assembly hole towards the second lubricating cavity (422); The second sealing ring (490) is sleeved on the outside of the transmission shaft (460) and located outside the assembly hole, and the second sealing ring (490) is in contact with the side surface of the bearing seat (420) connected with the cabin (200).

7. The vertical shaft speed-increasing power generation type fan system according to claim 6, characterized in that: The vertical shaft speed-increasing power generation type fan system further comprises a brake (600) fixed to the bearing seat (420) and surrounding the sealing end cover (470); the outer circumferential surface of the transmission shaft (460) is integrated with a brake disc (466), the brake disc (466) cooperates with the brake (600), and the brake (600) is used for locking or releasing the brake disc (466).

8. The vertical shaft speed-increasing power generation type fan system according to any one of claims 4-7, characterized in that: The wind wheel assembly (500) comprises a wind wheel body (510) and a wind wheel rotating shaft (520), and the wind wheel body (510) is mounted on the wind wheel rotating shaft (520); the wind wheel rotating shaft (520) is provided with a positioning through hole; The transmission shaft (460) is provided with a connecting flange (467), the transmission shaft (460) is arranged in the positioning through hole, and the connecting flange (467) is fixedly connected with the wind wheel rotating shaft (520).

9. The vertical shaft speed-increasing power generation type fan system according to claim 8, characterized in that: The wind wheel rotating shaft (520) comprises a plurality of shaft shells (521), the plurality of shaft shells (521) are sequentially spliced, and an annular splicing joint is formed at a splicing position of adjacent shaft shells (521); the transmission shaft (460) is externally provided with a positioning step (461), the transmission shaft (460) is externally sleeved with a support ring (530), the support ring (530) is borne by the positioning step (461); the transmission shaft (460) is simultaneously provided in the plurality of shaft shells (521), and the support ring (530) shields the annular splicing joint.

10. The vertical axis speed-increased power generation type fan system according to claim 8, characterized in that: The wind wheel body (510) has a first side (511) and a second side (512) arranged in the axial direction of the wind wheel rotating shaft (520), and the cabin (200) is located between the first side (511) and the second side (512).

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