Outer rotor permanent magnet wind driven generator

Abstract

The utility model relates to an outer rotor permanent magnet wind driven generator, which relates to the technical field of industrial power equipment, adopts a base-free structure, and comprises a motor body and a plurality of blades which are uniformly distributed at the peripheral side end of the motor body at intervals in the circumferential direction, the motor body comprises a stator shaft and an outer rotor which rotatably sleeves the peripheral side end of the stator shaft, the two end faces of the stator shaft are fixedly connected with the upper tower body and the lower tower body respectively, and the stator armature is fixedly installed on the stator shaft. The generator has the advantages that the size of the whole generator is reduced, the structure is compact, the requirement of environmental size limitation is met, and installation is more convenient through the structure without the base.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial power equipment technical field especially relates to a kind of outer rotor permanent-magnet wind-driven generators. BACKGROUND

[0002] With the rapid development of electric power industry and the demand for power supply, the use of new energy generation is increasingly concerned by people, wind energy resources are clean renewable resources, and wind power generation is one of the most mature, most with development scale conditions and commercial development prospects in new energy power generation method. Many countries in the world have fully realized the importance of wind power in energy structure deterioration and environmental pollution mitigation, and have attached great importance to the comprehensive development of wind power.

[0003] Wind power generation is different from general power generation system, and the randomness and uncertainty of wind speed change put higher requirements on wind turbine and generator. Traditional power generation equipment has large volume, complicated installation process and high maintenance cost. Permanent magnet synchronous motor has the advantages of high power density, small rotor heat output and compact structure compared with asynchronous motor, which is beneficial to reducing the volume of motor and reducing energy consumption. UTILITARY MODEL

[0004] (I) technical problem to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides an outer rotor permanent-magnet wind-driven generator, which solves the technical problems of large volume and complicated installation of traditional wind power generation equipment.

[0006] (II) technical scheme

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the main technical scheme including:

[0008] The utility model embodiment provides an outer rotor permanent-magnet wind-driven generator, which adopts inorganic seat structure, including motor body and multiple blades which are uniformly and interval distributed on the circumferential side end of the motor body, the motor body includes stator shaft and outer rotor which is rotatably sleeved on the outer circumferential side end of the stator shaft, the two end faces of the stator shaft are respectively fixedly connected with upper and lower tower bodies, and the stator armature is fixedly installed on the stator shaft.

[0009] The utility model embodiment provides an outer rotor permanent-magnet wind-driven generator, which adopts inorganic seat structure, reduces the volume of the whole generator, has compact structure, and meets the requirement of environmental size limitation.

[0010] Optionally, the inner circumferential wall of the outer rotor is circumferentially and interval attached with rotor magnetic steel, the rotor magnetic steel is assembled and pressed by magnetic steel glue, rotor slot wedge and bolt, and the two ends are fixed by magnetic steel blocking ring.

[0011] Optionally, a plurality of fan blades are welded on the outer end surface of the magnetic steel blocking ring in the circumferential direction, and the fan blades suck in air inwardly when the outer rotor rotates axially.

[0012] When the generator rotates, a certain amount of air is generated by the fan blades, thereby playing a certain role in reducing the temperature of the generator.

[0013] Optionally, a disc brake is further included, the disc brake is fixed on the stator shaft through a support, and a brake disc of the disc brake is clamped to the outer surface of the outer rotor to control rotation of the motor body.

[0014] Optionally, a flange plate is fixedly sleeved on the outer peripheral wall of the outer rotor, the flange plate rotates synchronously with the outer rotor, and the blades are detachably connected to the outer surface of the flange plate in the circumferential direction.

[0015] By sleeving the flange plate on the outer peripheral wall of the outer rotor and detachably connecting the blades to the outer surface of the flange plate, the movement and installation of the entire outer rotor permanent-magnet wind-driven generator are more convenient.

[0016] Optionally, a convex edge is coaxially arranged at an end of the flange plate away from the air blowing, and a reinforcing rib is vertically arranged between the convex edge and the flange plate, and the reinforcing rib is directed toward the axis of the flange plate.

[0017] By arranging the convex edge at the end of the flange plate away from the air blowing and adding the reinforcing rib, the structural strength of the entire flange plate is higher and more solid, and thus the flange plate can withstand more intense rotation and greater force from the air blowing direction when the blades are rotated by the wind.

[0018] Optionally, a plurality of connecting seats for fixing the blades are uniformly and circumferentially arranged on the outer periphery of the flange plate, and an empty slot is formed between adjacent connecting seats, and the flange plate is provided with a support piece connecting and supporting the connecting seats on both sides of the empty slot at the opening of the empty slot.

[0019] By arranging the connecting seats on the outer periphery of the flange plate, the empty slot is formed between adjacent connecting seats, thereby reducing the mass of the entire external structure of the generator, making the installation more convenient, and by arranging the support piece at the opening of the empty slot, the support piece supports the adjacent connecting seats, so that the flange plate can maintain structural stability and rotate when the blades are blown by the wind.

[0020] Optionally, a mounting cavity is formed in the middle of the connecting seat, a plurality of insertion holes are formed in the end face of the connecting seat away from the flange and communicated with the mounting cavity, a plurality of mounting screws are arranged on one end of the vane and inserted into the mounting cavity along the insertion holes, a plurality of mounting nuts coaxial with the insertion holes are arranged on the inner wall of the mounting cavity of the connecting seat, the mounting screws are screwed into the mounting nuts, and a polygonal fixing block is arranged on the inner wall of the mounting cavity of the connecting seat and used for positioning the mounting nuts.

[0021] When the vane is installed, the mounting screws on the vane are aligned with the insertion holes and inserted into the mounting cavity, then the mounting nuts are screwed to fix the mounting screws and thus the vane, and then the polygonal fixing block is used for positioning the mounting nuts, so that the vibration generated when the flange is rotated by the vane does not affect the mounting nuts, thereby ensuring the stability of the vane installation.

[0022] Optionally, a positioning screw is arranged on the inner wall of the mounting cavity of the connecting seat and used for sliding connection of the polygonal fixing block, a pressing nut is threadedly connected to the positioning screw, and the pressing nut abuts against the polygonal fixing block to abut against the inner wall of the mounting cavity.

[0023] When the vane is installed, the polygonal fixing block is slid to the end of the positioning screw away from the vane, when the vane installation is completed, the polygonal fixing block is moved to abut against the inner wall of the mounting cavity, so that the side end faces of the polygonal fixing block abut against the side ends of the mounting nuts respectively, thereby limiting the mounting nuts, and then the pressing nut is rotated to abut against the polygonal fixing block, thereby completely completing the fixing.

[0024] (Three) beneficial effects

[0025] The beneficial effects of the utility model are: the outer rotor permanent magnet wind power generator reduces the volume of the whole generator through the non-base structure, is compact in structure, and meets the requirement of environmental size limitation.

[0026] The generator is a permanent magnet synchronous wind power generator, has low rotating speed and large starting torque, has high power factor and large power density, effectively reduces the volume of the generator and the consumption of energy.

[0027] The generator cancels the speed increasing mechanism of the wind turbine, directly drives the low speed generator, is simple in structure, reliable in operation, high in efficiency, fast in dynamic response, convenient to install, low in maintenance cost, can be connected to the grid and independently operated, is especially suitable for remote areas in China, and has wide popularization and application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic view of the utility model embodiment.

[0029] Figure 2 is a three-dimensional schematic view of a second viewing angle of the embodiment of the utility model;

[0030] Figure 3 is a three-dimensional schematic view of an outer rotor in the embodiment of the utility model;

[0031] Figure 4 is an exploded schematic view of a Faraday disc and a blade in the embodiment of the utility model;

[0032] Figure 5 is Figure 4 the enlarged view of A.

[0033]

Explanation of reference signs

[0034] 1, motor body; 11, stator shaft; 12, outer rotor; 121, rotor magnetic steel; 122, magnetic steel blocking ring; 123, fan blade; 2, blade; 21, mounting screw; 3, disc brake; 4, flange plate; 41, convex edge; 42, reinforcing rib; 43, connecting seat; 431, mounting cavity; 432, jack; 433, mounting nut; 434, multi-angle fixing block; 435, positioning screw; 436, compression nut; 44, empty slot; 45, support sheet. DETAILED DESCRIPTION

[0035] In order to better explain the utility model, so as to facilitate understanding, below, combining with the drawings, through specific implementation, the utility model is described in detail.

[0036] In order to better understand the above technical solutions, the exemplary embodiments of the utility model will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided so that the utility model can be more clearly and thoroughly understood, and the scope of the utility model can be completely conveyed to those skilled in the art.

[0037] Referring to Figures 1 to 5 , an outer rotor 12 permanent magnet wind power generator adopts a no-base structure, comprising a motor body 1, a plurality of blades 2 circumferentially and uniformly spaced distributed on the side end of the motor body 1 and a disc brake 3.

[0038] The motor body 1 comprises a stator shaft 11 and an outer rotor 12 rotatably sleeved on the outer circumferential side end of the stator shaft 11, the two end faces of the stator shaft 11 are respectively fixedly connected with upper and lower tower bodies, and the stator armature is fixedly installed on the stator shaft 11.

[0039] The rotor magnetic steel 121 is fixed on the inner circumferential wall of the outer rotor 12 by magnetic steel glue, rotor slot wedge and bolt assembly compression, and is fixed by the magnetic steel stop ring 122 at both ends.

[0040] A certain number of fan blades 123 are welded on the outer end surface of the magnetic steel stop ring 122 in the circumferential direction, and the fan blades 123 suck air inward when the outer rotor 12 rotates in the axial direction. When the outer rotor 12 rotates, air is sucked inward through the fan blades 123, thereby cooling the inside of the motor body 1 to a certain extent.

[0041] The disc brake 3 is fixed on the stator shaft 11 by a support bolt, and the brake disc of the disc brake 3 is clamped to the outer surface of the outer rotor 12 to control the rotation of the motor body 1.

[0042] The flange plate 4 is coaxially fixed by key connection to the outer circumferential wall of the outer rotor 12, and the flange plate 4 rotates synchronously with the outer rotor 12, and the blades 2 are detachably connected to the outer surface of the flange plate 4 in the circumferential direction.

[0043] The flange plate 4 is coaxially provided with a convex edge 41 at the end away from the blowing, and a reinforcing rib 42 is integrally provided between the convex edge 41 and the flange plate 4, and the reinforcing rib 42 is towards the axis of the flange plate 4. The structure of the entire flange plate 4 is stronger and more solid, and when the blades 2 are rotated by the wind, the flange plate 4 can withstand more intense rotation and at the same time withstand greater force from the blowing direction.

[0044] The outer circumferential wall of the flange plate 4 is integrally provided with a connecting seat 43 for fixing the blades 2 in the circumferential direction, and an empty slot 44 is formed between adjacent connecting seats 43, and a support piece 45 connecting the connecting seats 43 on both sides is welded at the opening of the empty slot 44. The mass of the entire generator external structure is reduced by the empty slot 44, making installation more convenient, and the support piece 45 supports the adjacent connecting seats 43 to ensure that the flange plate 4 can maintain structural stability and rotate when the blades 2 are blown by the wind.

[0045] A mounting cavity 431 is formed in the middle of the connecting seat 43, a plurality of insertion holes 432 communicating with the mounting cavity 431 are uniformly and spaced apart formed on the end face of the connecting seat 43 away from the flange plate 4, one end of the blade 2 is provided with a plurality of mounting screws 21 inserted into the mounting cavity 431 along the insertion holes 432, a plurality of mounting nuts 433 coaxial with the insertion holes 432 are rotationally arranged on the inner wall of the mounting cavity 431 of the connecting seat 43, the mounting screws 21 are threadedly inserted into the mounting nuts 433, a polygonal fixed block 434 is arranged on the inner wall of the mounting cavity 431 of the connecting seat 43 and used for positioning the mounting nuts 433, the side end face of the plurality of mounting nuts 433 close to the polygonal fixed block 434 abuts against the side end face of the polygonal fixed block 434, a positioning screw 435 for sliding connection of the polygonal fixed block 434 is welded to the inner wall of the mounting cavity 431 of the connecting seat 43, a pressing nut 436 is threadedly connected on the positioning screw 435 and abuts against the polygonal fixed block 434 to abut against the inner wall of the mounting cavity 431. When the blade 2 is installed, the mounting screws 21 on the blade 2 are aligned with the insertion holes 432 and inserted, then the mounting nuts 433 are screwed, so that the mounting nuts 433 fix the mounting screws 21, thereby fixing the blade 2, then the polygonal fixed block 434 is moved to abut against the inner wall of the mounting cavity 431, so that the side end face of the polygonal fixed block 434 abuts against the side end of the mounting nuts 433, thereby limiting the mounting nuts 433, then the pressing nut 436 is rotated to abut against the polygonal fixed block 434, thereby completely fixing, thereby ensuring that the vibration generated when the blade 2 drives the flange plate 4 to rotate does not affect the mounting nuts 433, so as to ensure the stability of the blade 2.

[0046] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0047] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0049] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0050] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An external rotor permanent magnet wind turbine generator, characterized in that: The structure adopts a frameless design, including a motor body (1) and multiple blades (2) evenly spaced around the periphery of the motor body (1). The motor body (1) includes a stator shaft (11) and an outer rotor (12) rotatably sleeved on the outer periphery of the stator shaft (11). The two ends of the stator shaft (11) are fixedly connected to the upper and lower tower bodies respectively. The stator armature is installed and fixed on the stator shaft (11). The inner periphery of the outer rotor (12) is covered with rotor magnets (121) evenly spaced around the periphery. The rotor magnets (121) are assembled and tightened by magnet glue, rotor slot wedges and bolts. Both ends are fixed by magnet retaining rings (122). A certain number of fan blades (123) are welded to the outer end face of the magnet retaining rings (122) along the circumferential direction. When the outer rotor (12) rotates axially, the fan blades (123) draw air inward.

2. The external rotor permanent magnet wind turbine generator as described in claim 1, characterized in that: It also includes a disc brake (3), which is fixed to the stator shaft (11) by a bracket. The brake disc of the disc brake (3) is clamped to the outer surface of the outer rotor (12) to control the rotation of the motor body (1).

3. The external rotor permanent magnet wind turbine generator as described in claim 1, characterized in that: The outer rotor (12) is fitted with a flange (4) on its outer peripheral wall. The flange (4) and the outer rotor (12) rotate synchronously. The blade (2) is circumferentially and detachably connected to the outer surface of the flange (4).

4. The external rotor permanent magnet wind turbine generator as described in claim 3, characterized in that: The flange (4) has a raised edge (41) coaxially arranged at the end away from the air blowing, and a reinforcing rib (42) is arranged perpendicularly between the raised edge (41) and the flange (4), with the reinforcing rib (42) facing the axis of the flange (4).

5. The external rotor permanent magnet wind turbine generator as described in claim 3, characterized in that: The flange (4) is provided with connecting seats (43) for fixing the blade (2) at uniform intervals on the outer periphery. A groove (44) is formed between adjacent connecting seats (43). The flange (4) is provided with a support piece (45) at each end of the groove (44) to connect and support the connecting seats (43) on both sides.

6. The external rotor permanent magnet wind turbine generator as described in claim 5, characterized in that: The connecting seat (43) has a mounting cavity (431) in the middle. The end face of the connecting seat (43) away from the flange (4) has a plurality of insertion holes (432) that are evenly spaced in the circumference and communicate with the mounting cavity (431). One end of the blade (2) is provided with a plurality of mounting screws (21) that are inserted into the mounting cavity (431) along the insertion holes (432). The connecting seat (43) has a plurality of mounting nuts (433) that are coaxial with the insertion holes (432) rotatably arranged on the inner wall of the mounting cavity (431). The mounting screws (21) are threaded into the mounting nuts (433). The connecting seat (43) has a polygonal fixing block (434) that positions the mounting nuts (433) on the inner wall of the mounting cavity (431). The side end face of the plurality of mounting nuts (433) near the polygonal fixing block (434) abuts against the side end face of the polygonal fixing block (434).

7. The external rotor permanent magnet wind turbine generator as described in claim 6, characterized in that: The connecting seat (43) is provided with a positioning screw (435) on the inner wall of the mounting cavity (431) for sliding connection of the polygonal fixing block (434). A clamping nut (436) is threadedly connected to the positioning screw (435), and the clamping nut (436) abuts against the polygonal fixing block (434) until it abuts against the inner wall of the mounting cavity (431).

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