CN212543471U

CN212543471U - Fixed subassembly and double-fed aerogenerator

Info

Publication number: CN212543471U
Application number: CN202021814691.6U
Authority: CN
Inventors: 袁轶彦
Original assignee: Beijing Sany Intelligent Motor Co Ltd
Current assignee: Beijing Sany Intelligent Motor Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-02-12
Anticipated expiration: 2030-08-26

Abstract

The application provides a fixed subassembly and double-fed aerogenerator relates to double-fed aerogenerator technical field. The fixing component is applied to the fixed connection between the stator and the base of the doubly-fed wind driven generator and comprises a connecting plate and a fastener, the connecting plate is attached to the joint of the stator and the base, and the connecting plate is fixedly connected with the base through the fastener. The double-fed wind driven generator adopts the fixing component, a welding fixing mode is cancelled, the quality hidden danger caused by welding is avoided, the service life of the double-fed wind driven generator is prolonged, the connection accuracy of the stator and the base is improved, and the power generation efficiency of the double-fed wind driven generator is improved.

Description

Fixed subassembly and double-fed aerogenerator

Technical Field

The application relates to the field of double-fed wind driven generators, in particular to a fixed assembly and a double-fed wind driven generator.

Background

The stator and the base in the double-fed wind driven generator are main components in the double-fed wind driven generator, the processing and assembling quality of the double-fed wind driven generator is directly related to the quality of the whole unit, and the manufacturability of the double-fed wind driven generator directly influences the progress and the manufacturing cost of the whole unit.

When the existing stator and the base are connected, a transitional fit mode is mostly adopted, and a stator pressing ring and the base are welded and fixed. However, the assembly process needs welding, the requirement of a motor winding on insulation is high, welding slag and welding beans can be left if the protection is improper during welding, risks are caused to long-term operation of the double-fed wind driven generator, the stator and the base are not accurate enough in a welding fixing mode, and installation dislocation and other conditions are caused easily.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a fixed subassembly for the mutual fixation of double-fed aerogenerator's stator and frame does not need the welding, can not cause the influence to motor winding's insulation, and has avoided the fixed mode of welded to cause the stator to be connected with the frame accurate inadequately, causes the emergence of the circumstances such as installation dislocation easily.

For solving the technical problem, the utility model also provides a double-fed aerogenerator uses the fixed subassembly that the first purpose of this application provided, realizes double-fed aerogenerator's stator and the mutual fixed connection of frame, has improved the stator of motor and the accuracy of being connected of frame, has prolonged double-fed aerogenerator's operation life, is fit for using widely on a large scale.

In order to achieve the above object, the utility model provides a pair of fixed subassembly is applied to the fixed connection of doubly-fed aerogenerator's stator and frame, fixed subassembly includes connecting plate and fastener, the connecting plate laminate in the stator with the junction of frame, the connecting plate passes through the fastener is realized the stator with the fixed connection of frame.

As a further improvement of the above technical solution:

the fixing assembly is characterized in that the base is provided with a ring plate, the stator is provided with a pressing ring, and the connecting plate is attached to the joint of the ring plate and the pressing ring.

The fixing component further comprises a driving end ring plate and a non-driving end ring plate, wherein the pressing ring comprises a driving end pressing ring and a non-driving end pressing ring, the driving end ring plate is connected with the driving end pressing ring, and the non-driving end ring plate is connected with the non-driving end pressing ring.

In the fixing component, the driving end ring plate is provided with a driving end clamping groove, the non-driving end ring plate is provided with a non-driving end clamping groove, the driving end pressing ring is clamped in the driving end clamping groove, and the non-driving end pressing ring is clamped in the non-driving end clamping groove.

In the fixing assembly, one of the two connecting plates is attached to a joint between the driving end ring plate and the driving end pressing ring, and the other one is attached to a joint between the non-driving end ring plate and the non-driving end pressing ring.

In the fixing assembly, the fastener further comprises a bolt, the connecting plate is provided with a bolt hole, and the bolt penetrates through the bolt hole and is respectively connected with the stator and the machine base.

The fixing assembly further comprises a self-locking washer, and the self-locking washer is arranged between the bolt and the connecting plate.

In the fixing assembly, the number of the bolt holes is two, the bolts penetrate through the first row of the bolt holes to be connected with the base, and the bolts penetrate through the second row of the bolt holes to be connected with the stator.

The fixing assembly further comprises four bolt holes in each row.

To achieve the above object, the utility model also provides a doubly-fed wind generator, include:

the fixing component;

the connecting plate is attached to the joint of the stator and the base, and the connecting plate is fixedly connected with the stator and the base through the fastener.

The utility model has the advantages that:

the utility model provides a pair of fixed subassembly is applied to the fixed connection of double-fed aerogenerator's stator and frame, and fixed subassembly includes connecting plate and fastener, and the connecting plate laminating is in the junction of stator and frame, and the connecting plate passes through the fixed connection that stator and frame were realized to the fastener. The fixing component can realize the fixed connection between the stator and the base of the double-fed wind driven generator, improve the connection accuracy of the stator and the base and improve the power generation efficiency of the double-fed wind driven generator; a welding fixing mode is cancelled, so that quality hidden danger caused by welding is avoided, the service life of the double-fed wind driven generator is prolonged, and the double-fed wind driven generator is suitable for large-scale popularization and use; the fixing assembly also has the advantages of simple structure, convenience in installation, easiness in maintenance and the like.

The utility model also provides a double-fed aerogenerator, including above-mentioned fixed subassembly, stator and base, the connecting plate is laminated in the junction of stator and frame, and the connecting plate passes through the fixed connection of fastener realization stator and frame. The stator and the engine base of the double-fed wind driven generator are fixedly connected through the fixing component, and the double-fed wind driven generator has the advantages of high generating efficiency, long service life and the like.

To sum up, the utility model discloses a fixed subassembly and double-fed aerogenerator, it has above-mentioned a great deal of advantage and practical value to do not see in like product that there is similar method openly to publish or use and surely belong to the innovation, produced well-used and practical effect, the multiple efficiency that has the promotion than current technique, thereby comparatively be suitable for the practicality, and have extensive industrial value.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 shows a schematic cross-sectional structure of a fixing assembly according to an embodiment of the present invention;

FIG. 2 shows an enlarged view of area A of FIG. 1;

FIG. 3 shows an enlarged view of area B of FIG. 1;

fig. 4 shows a front view of a fixation assembly of an embodiment of the present invention.

Description of the main element symbols:

100-a stator; 110-pressing ring; 111-drive end clamping ring; 112-non-drive end clamping ring;

200-a stand; 210-ring plate; 211-drive end ring plate; 212-non-drive-end ring plate; 213-drive end card slot; 214-non-drive-end card slot;

300-a connecting plate; 310-bolt holes;

400-a fastener; 410-bolt; 420-self-locking washer.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

In the traditional doubly-fed wind generator, the stator 100 and the base 200 are matched in a transition fit mode, and the pressing ring 110 of the stator 100 is fixed to the base 200 in a welding mode. This kind of fixed mode is simple, high-efficient, but the assembly process needs the welding, nevertheless because the motor winding is high to insulating reliability, if protect improper during the assembly in-process welding, then probably leave over welding slag, weld the beans, cause the risk to the long-term operation of generator. In addition, the final assembly process of the generator belongs to precision assembly, processes such as polishing and welding are gradually cancelled on the assembly site, and the welding and fixing mode of the stator and the base needs to be improved urgently.

Referring to fig. 1, the fixing assembly provided in this embodiment is applied to the fixed connection between the stator 100 and the base 200 of the doubly-fed wind turbine, and includes a connecting plate 300 and a fastener 400, where the connecting plate 300 is attached to the connection between the stator 100 and the base 200, and the connecting plate 300 realizes the fixed connection between the stator 100 and the base 200 through the fastener 400.

In some specific embodiments, a pressing ring 110 is arranged at the connection position of the stator 100 and the base 200 of the doubly-fed wind generator, and the pressing ring 110 is divided into a driving end pressing ring 111 and a non-driving end pressing ring 112 according to different installation positions.

In some specific embodiments, a ring plate 210 is provided at the connection between the base 200 and the stator 100 of the doubly-fed wind generator, and the ring plate 210 is divided into a driving-end ring plate 211 and a non-driving-end ring plate 212 according to the installation position.

The drive end pressing ring 111 is connected with the drive end ring plate 211, the connecting plate 300 is attached to the connection position of the drive end pressing ring 111 and the drive end ring plate 211, and the fastener 400 fastens the connecting plate 300 to realize the fixed connection of the drive end pressing ring 111 and the drive end ring plate 211. The non-drive end pressing ring 112 is connected with the non-drive end ring plate 212, the connecting plate 300 is attached to the connecting position of the non-drive end pressing ring 112 and the non-drive end ring plate 212, and the fastener 400 fastens the connecting plate 300 to realize the fixed connection of the non-drive end pressing ring 112 and the non-drive end ring plate 212.

In some specific embodiments, referring to fig. 2, the driving end ring plate 211 is provided with a driving end clamping groove 213, referring to fig. 3, the non-driving end ring plate 212 is provided with a non-driving end clamping groove 214, the driving end pressing ring 111 is clamped in the driving end clamping groove 213 of the driving end ring plate 211, the non-driving end pressing ring 112 is clamped in the non-driving end clamping groove 214 of the non-driving end ring plate 212 and is respectively attached to the connecting plate 300, and the fastening member 400 fastens the connecting plate 300 to respectively realize the fixed connection of the driving end pressing ring 111 and the driving end ring plate 211 and the fixed connection of the non-driving end pressing ring 112 and the.

In some specific embodiments, the driving-end clamping groove 213 and the non-driving-end clamping groove 214 may be stepped, and the driving-end pressing ring 111 and the non-driving-end pressing ring 112 are respectively clamped in the driving-end clamping groove 213 and the non-driving-end clamping groove 214, so as to improve the installation accuracy of the stator 100 and the base 200, ensure long-term stable operation of the wind driven generator, and prolong the service life of the wind driven generator.

It will be appreciated that the driver end notch 213 and the non-driver end notch 214 may be of other configurations, as long as precise positioning and installation of the clamping ring 110 and the ring plate 210 is achieved. And will not be described in detail herein because of the limited space available for this application.

Referring to fig. 2, 3 and 4, the fastener 400 includes a bolt 410, the connecting plate 300 has eight bolt holes 310, the eight bolt holes 310 include two rows, each row includes four bolt holes 310, the two connecting plates 300 are respectively attached to the joints of the driving-end pressing ring 111 and the driving-end ring plate 211 and the non-driving-end pressing ring 112 and the non-driving-end ring plate 212, then the bolt 410 penetrates through the bolt holes 310 in the upper row to be respectively fixedly connected with the driving-end ring plate 211 and the non-driving-end ring plate 212 of the machine base 200, and the bolt 410 penetrates through the bolt holes 310 in the lower row to be respectively connected with the driving-end pressing ring 111 and the non-driving-end pressing.

The assembly process of the fixing assembly provided by the embodiment is as follows:

s1: cleaning a driving end ring plate 211 and a non-driving end ring plate 212 of a base 200 of the doubly-fed wind generator;

s2: putting a driving end ring plate 211 and a non-driving end ring plate 212 of a base 200 of the doubly-fed wind generator into a baking oven, heating to 160 ℃, and preserving heat for 4 hours;

s3: before cooling the ring plate 210 of the base 200 of the doubly-fed wind generator, the pressing ring 110 of the stator 100 is installed on the ring plate 210 of the base 200 in a hot-sleeved mode, wherein the non-driving-end pressing ring 112 is sleeved in the non-driving-end clamping groove 214 of the non-driving-end ring plate 212, the driving-end pressing ring 111 is sleeved in the driving-end clamping groove 213 of the driving-end ring plate 211, and in the hot-sleeved installation process, the driving-end pressing ring 111 and the driving-end ring plate 211 are connected through the bolts 410 and the connecting plate 300 to guide the stator 100 and the base 200 and ensure that the bolt holes 310 are aligned;

s4: after the driving end ring plate 211 and the non-driving end ring plate 212 of the base 200 of the doubly-fed wind generator are cooled, the connecting plate 300 is installed on the driving end pressing ring 111 and the driving end ring plate 211 through bolts 410;

s5: the connecting plate 300 is mounted to the non-drive end clamp ring 112 and non-drive end ring plate 212 with bolts 410.

Example two

The present embodiment provides a fixing assembly, which is an improvement of the fastener 400 on the fixing assembly provided in the first embodiment, and the main differences compared with the fixing assembly provided in the first embodiment are that:

the fastener 400 further includes a self-locking washer 420, the self-locking washer 420 being disposed between the bolt 410 and the connecting plate 300.

The self-locking washer 420 ensures that the clamping force of the connection member is still maintained under strong vibration, better than the bolt 410 which relies on friction to self-lock; the loosening of the bolt 410 caused by vibration is prevented, and the related problems caused by the loosening of the bolt 410 do not occur; special installation work is not needed, and the installation and the disassembly are easy; variations in temperature will not loosen bolt 410; meanwhile, the novel electric heating wire has the advantages of durability, reusability and the like.

During assembly, the self-locking washer 420 is inserted into the screw of the bolt 410, and then the bolt 410 is inserted into the bolt hole 310 of the connecting plate 300 and fixedly mounted on the ring plate 210 of the base 200 and the clamping ring 110 of the stator 100, so as to fixedly connect the base 200 and the stator 100.

The fixing assembly provided by the embodiment is characterized in that the self-locking washer 420 is additionally arranged between the bolt 410 and the connecting plate 300, the fastening degree of connection of the bolt 410 is improved, the connection between the stator 100 and the base 200 is firmer, the risk that the stator 100 and the base 200 are not firmly connected due to looseness of the bolt 410 is reduced, the maintenance frequency of the doubly-fed wind driven generator is reduced, and the self-locking washer 420 also has the advantages of low price, convenience in application, simplicity and convenience in installation and the like.

EXAMPLE III

Referring to fig. 1 to 4, the doubly-fed wind generator of the present embodiment includes a fixing component provided in the first embodiment; and the stator 100 and the base 200, the connecting plate 300 of the fixing component is attached to the joint of the stator 100 and the base 200, and the connecting plate 300 realizes the fixed connection of the stator 100 and the base 200 through the fastener 400.

According to the doubly-fed wind generator provided by the embodiment, the fixed assembly provided by the first embodiment is used, so that the stator 100 of the doubly-fed wind generator is fixedly connected with the base 200, the connection accuracy of the stator 100 and the base 200 is improved, and the power generation efficiency of the doubly-fed wind generator is improved; the fixing mode of welding the stator 100 and the base 200 of the traditional double-fed wind driven generator is cancelled, the quality hidden trouble caused by welding is avoided, the service life of the double-fed wind driven generator is prolonged, and the double-fed wind driven generator is suitable for large-scale popularization and use.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a fixed subassembly, is applied to the fixed connection of double-fed aerogenerator's stator and frame, its characterized in that, fixed subassembly includes connecting plate and fastener, the connecting plate laminate in the stator with the junction of frame, the connecting plate passes through the fastener is realized the stator with the fixed connection of frame.

2. The fixing assembly according to claim 1, wherein the base is provided with a ring plate, the stator is provided with a pressing ring, and the connecting plate is attached to the joint of the ring plate and the pressing ring.

3. A fixing assembly according to claim 2, wherein the ring plates include a drive end ring plate and a non-drive end ring plate, the clamping rings include a drive end clamping ring and a non-drive end clamping ring, the drive end ring plate is connected to the drive end clamping ring, and the non-drive end ring plate is connected to the non-drive end clamping ring.

4. A securing assembly according to claim 3, wherein the drive end ring plate is provided with a drive end slot and the non-drive end ring plate is provided with a non-drive end slot, the drive end clamping ring being clamped in the drive end slot and the non-drive end clamping ring being clamped in the non-drive end slot.

5. A fixing assembly according to claim 3 wherein there are two of the connection plates, one of which abuts the junction of the drive end ring plate and the drive end clamping ring and the other of which abuts the junction of the non-drive end ring plate and the non-drive end clamping ring.

6. A securing assembly according to claim 1, wherein the fastener comprises a bolt and the connecting plate is provided with a bolt hole through which the bolt is connected to the stator and the housing respectively.

7. The securing assembly of claim 6, wherein the fastener further comprises a self-locking washer disposed between the bolt and the connecting plate.

8. The fastening assembly of claim 6, wherein the bolt holes comprise two rows, the bolts extending through a first row of the bolt holes to connect to the housing, and the bolts extending through a second row of the bolt holes to connect to the stator.

9. A fixing assembly according to claim 8 wherein there are four bolt holes in each row.

10. A doubly-fed wind generator, comprising:

the securing assembly of any one of claims 1-9;