CN213027661U

CN213027661U - Strong-current transfer box for stator of permanent-magnet direct-drive wind driven generator

Info

Publication number: CN213027661U
Application number: CN202021505115.3U
Authority: CN
Inventors: 陈记春; 米兴社; 俞文斌; 吴冠霖; 贾泽伟; 杨杰
Original assignee: Xi'an Zhongche Yongdian Jieli Wind Energy Co ltd
Current assignee: Xi'an Zhongche Yongdian Jieli Wind Energy Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-20
Anticipated expiration: 2030-07-27

Abstract

The utility model belongs to the aerogenerator field, concretely relates to permanent magnetism directly drives aerogenerator stator forceful electric power transfer box. The transfer box comprises a box body, a wire inlet device, a wire outlet device, an insulator and a copper bar, wherein the box body is fixed on a stator bracket, and the copper bar is fixed on a box body bottom plate through the insulator; the wire inlet device is connected with the wire outlet device through a copper bar. The shell of the transfer box is made of low-temperature resistant steel plates, so that the use requirement of low-cold severe environment is met; the height and size of the transfer box are greatly shortened, the space occupation of the generator transfer box is reduced, the application range is wider, the frame of the transfer box is designed into a universal structure with upper and lower wires, the overall structure is simplified, and the cost is reduced.

Description

Strong-current transfer box for stator of permanent-magnet direct-drive wind driven generator

Technical Field

The utility model belongs to the aerogenerator field, concretely relates to permanent magnetism directly drives aerogenerator stator forceful electric power transfer box.

Background

The strong-current stator transfer box is used as an important component in a permanent-magnet direct-drive wind driven generator structure, is a bridge for electrically connecting a generator stator and a cabin, and has the most basic requirements of electric shock prevention, dust prevention and rain prevention. In addition, according to different use occasions and installation size spaces of the direct-driven wind driven generator, the installation operation space and the disassembly are convenient to consider, so that the arrangement of internal electrical elements is required to have enough safety distance, the safety electrical clearance and the creepage distance required by corresponding voltage levels are met, the protection level of the shell of the direct-driven permanent-magnet wind driven generator is also required to meet the use occasions of the direct-driven permanent-magnet wind driven generator, and the disassembly and maintenance are more convenient.

Most of the existing transfer boxes are complex in structure, high in manufacturing cost, small in installation space, inconvenient to maintain and disassemble, low in protection level and easy to damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a permanent magnetism directly drives aerogenerator stator forceful electric power transfer box.

The utility model aims at solving through the following technical scheme:

the strong-current transfer box for the stator of the permanent-magnet direct-drive wind driven generator comprises a box body, a wire inlet device, a wire outlet device, an insulator and a copper bar, wherein the box body is fixed on a stator support, and the copper bar is fixed on a bottom plate of the box body through the insulator; the wire inlet device is connected with the wire outlet device through a copper bar.

Further, the box is the cuboid structure, and the box includes transfer box body, apron, inlet wire board and outlet wire board, the transfer box body is integrated into one piece, the apron is fixed in the top of transfer box body, and outlet wire board and inlet wire board are fixed in respectively the adjacent surface at transfer box body top and be on two opposite faces.

Furthermore, the box body is made of Q345D steel plate, and the edge of the cover plate is of an arc structure.

Furthermore, a plurality of through holes with the same number are arranged on the wire outgoing plate and the wire incoming plate.

Further, the inlet wire device includes inlet wire glan, stator lead-out wire, the inlet wire glan is located the inlet wire board outside, through the through-hole with the inlet wire board is fixed, stator lead-out wire end sets up binding post, and the stator lead-out wire passes the inlet wire glan, and binding post is connected with the copper bar.

Furthermore, the outlet device comprises an outlet grid and a user cable, the outlet grid is located on the outer side of the outlet plate and fixed with the outlet plate through the through hole, a wiring terminal is arranged at the tail end of the user cable, the user cable penetrates through the outlet grid, and the wiring terminal is connected with the copper bar.

Further, the position that binding post and copper bar are connected is provided with electrically conductive mud.

Furthermore, the transfer box body, the cover plate, the wire inlet plate and the wire outlet plate are provided with equipotential blocks, the equipotential cables connect the stator support with each other, the stator support is provided with a grounding block, and the grounding block is connected with the equipotential blocks on the transfer box body through a grounding wire.

Further, the copper bar includes U looks copper bar, V looks copper bar and W looks copper bar, sets up side by side in proper order in the transfer box is originally internal.

Further, a base plate is arranged on the box body bottom plate, one end of the insulator and the base plate are fixed on the box body bottom plate through bolts, and the other end of the insulator is fixed with the copper bar through bolts.

The utility model has the advantages that: 1. the low-temperature resistant steel plate is adopted, so that the use requirement of the low-cold severe environment is met; 2. the height and the size of the adapter box are greatly shortened, the space occupation of the generator adapter box is reduced, and the application range is wider; 3. the whole transfer box has good sealing performance; 4. the frame of the transfer box is designed into a universal structure with up-down inlet and outlet, so that the overall structure is simplified, and the cost is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a bottom view of the present invention;

fig. 4 is a top view of the present invention;

fig. 5 is a right side view of the present invention;

fig. 6 is a right side sectional view of the present invention.

Wherein: 1 is a box body; 2 is a wire inlet device; 3 is a wire outlet device; 4 is a copper bar; 5 is an equipotential block; 6 is an equipotential cable; 7 is a grounding block; 8 is a grounding wire; 9 is an insulator; 10, a wiring terminal; 11 an adapter box body; 12 is a cover plate; 13 is a wire inlet plate; 14 is an outlet plate; 15 is a backing plate; 21 is incoming glan; 22 is a stator lead-out wire; 31 is outlet glan; 32 is a subscriber cable; 41 is a U-phase copper bar; 42 is a V-phase copper bar; and 43 is W-phase copper bar.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the following claims.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments.

Referring to fig. 1-6, a permanent magnetism directly drives aerogenerator stator forceful electric power transfer box, including box 1, inlet wire device 2, outlet wire device 3, insulator 9 and copper bar 4, box 1 is the cuboid structure, including transfer box body 11, apron 12, inlet wire board 13 and outlet plate 14, whole material is low temperature resistant type Q345D steel sheet material, can satisfy low and cold adverse circumstances operation requirement, transfer box body 11 is integrated into one piece, apron 12 is through the top of bolt fastening in transfer box body 11, and is same, inlet wire board 13 and outlet plate 14 are fixed in respectively on two opposite planes around transfer box body 11 through the bolt.

Four edges of the cover plate 12 are of circular arc structures, rainwater can be effectively prevented from entering the transfer box, the protection grade of the transfer box can reach the IP54 grade, the inlet wire plate 13 and the outlet wire plate 14 are provided with the same through holes, and the number of the through holes is 6.

Further, the wire inlet device 2 comprises a wire inlet grid 21 and a stator outgoing wire 22, the wire grid 21 can be fixed on the outer side of the wire inlet plate 13 through a through hole, the tail end of the stator outgoing wire 22 is provided with a wiring terminal 10, the stator outgoing wire 22 penetrates through the wire inlet grid 21, the wiring terminal 10 is connected with the copper bar 4, similarly, the wire outlet device 3 comprises a wire outlet grid 31 and a user cable 32, the wire outlet grid 31 can be fixed on the outer side of the wire outlet plate 14 through the through hole, the tail end of the user cable 32 is provided with the wiring terminal 10, the user cable 32 penetrates through the wire outlet grid 31, and the wiring terminal 10. The interface of the connecting terminal 10 and the copper bar 4 is provided with conductive mud, so that the conductivity of the interface is increased, and the stator outgoing line/user cable can be prevented from being burnt due to eddy current generated by electrifying through the incoming/outgoing line plate and the incoming/outgoing line Glan. Therefore, the transfer box meets the universal structure of up-down incoming and outgoing lines, simplifies the whole structure and reduces the cost.

Further, the copper bars comprise a U-phase copper bar 41, a V-phase copper bar 42 and a W-phase copper bar 43, each copper bar is provided with 4 connectors, the number of the corresponding stator outgoing lines 22 and the number of the corresponding user cables 32 are 6, and every two stator outgoing lines and every two corresponding user cables are connected with one copper bar; meanwhile, a base plate 15 is arranged on a bottom plate of the box body 1, then one end of an insulator 9 is fixed on the bottom plate through two bolts with different sizes, MS939 sealant is needed to be used for coating after the bolts are tightened, and the insulator 9 is formed by pouring epoxy resin, so that the insulating effect can be achieved, and the copper bar can be prevented from rotating; further, the other end of the insulator 9 is fixed with the copper bar through two bolts with different sizes, and each copper bar is fixed with the transfer box bottom plate through the insulator 9.

Further, the transfer box body 11, the cover plate 12, the wire inlet plate 13 and the wire outlet plate 14 are all provided with equipotential blocks 5, the equipotential blocks 5 of the devices are connected with each other through equipotential cables 6, it is guaranteed that different parts are equal in potential, and finally the equipotential blocks 5 on the transfer box body are connected with the grounding block 7 on the stator support through the grounding wire 8, and equipment grounding is guaranteed.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A strong current transfer box for a stator of a permanent magnet direct-drive wind driven generator is characterized by comprising a box body (1), a wire inlet device (2), a wire outlet device (3), an insulator (9) and a copper bar (4), wherein the box body (1) is fixed on a stator support, and the copper bar (4) is fixed on a bottom plate of the box body (1) through the insulator (9); the wire inlet device (2) is connected with the wire outlet device (3) through a copper bar (4).

2. The strong current transfer box for the stator of the permanent magnet direct-drive wind driven generator is characterized in that the box body (1) is of a rectangular structure, the box body (1) comprises a transfer box body (11), a cover plate (12), an incoming line plate (13) and an outgoing line plate (14), the transfer box body (11) is integrally formed, the cover plate (12) is fixed to the top of the transfer box body (11), and the outgoing line plate (14) and the incoming line plate (13) are respectively fixed to two opposite surfaces and adjacent surfaces of the top of the transfer box body (11).

3. The strong current transfer box of the stator of the permanent magnet direct-drive wind driven generator as claimed in claim 2, wherein the box body (1) is made of a Q345D steel plate, and the edge of the cover plate (12) is of an arc structure.

4. The strong current transfer box of the stator of the permanent magnet direct-drive wind driven generator as claimed in claim 2, wherein the outlet plate (14) and the inlet plate (13) are provided with a plurality of through holes in the same number.

5. The strong current adapter box for the stator of the permanent magnet direct-drive wind driven generator is characterized in that the wire inlet device (2) comprises a wire inlet grid (21) and a stator outgoing wire (22), the wire inlet grid (21) is located on the outer side of the wire inlet plate (13) and fixed with the wire inlet plate (13) through the through hole, a wiring terminal (10) is arranged at the tail end of the stator outgoing wire (22), the stator outgoing wire (22) penetrates through the wire inlet grid (21), and the wiring terminal (10) is connected with a copper bar (4).

6. The strong current transfer box of the stator of the permanent magnet direct-drive wind driven generator is characterized in that the outlet device (3) comprises an outlet grid (31) and a user cable (32), the outlet grid (31) is located on the outer side of the outlet plate (14) and fixed with the outlet plate (14) through the through hole, a wiring terminal (10) is arranged at the tail end of the user cable (32), the user cable (32) penetrates through the outlet grid (31), and the wiring terminal (10) is connected with the copper bar (4).

7. The strong current adapter box for the stator of the permanent magnet direct-drive wind driven generator as claimed in claim 5 or 6, wherein conductive mud is arranged at the position where the connecting terminal (10) is connected with the copper bar (4).

8. The strong current transfer box of the stator of the permanent magnet direct-drive wind driven generator as claimed in claim 2, wherein the transfer box body (11), the cover plate (12), the incoming line plate (13) and the outgoing line plate (14) are all provided with an equipotential block (5) and are connected in pairs through equipotential cables (6), the stator support is provided with a grounding block (7), and the grounding block (7) is connected with the equipotential block (5) on the transfer box body (11) through a grounding wire (8).

9. The strong current adapter box for the stator of the permanent magnet direct-drive wind driven generator as claimed in claim 2, wherein the copper bar (4) comprises a U-phase copper bar (41), a V-phase copper bar (42) and a W-phase copper bar (43) which are sequentially arranged in the adapter box body (11) side by side.

10. The strong current transfer box for the stator of the permanent magnet direct-drive wind driven generator according to claim 1, characterized in that a base plate (15) is arranged on a base plate of the box body (1), one end of the insulator (9) and the base plate (15) are fixed on the base plate of the box body (1) through bolts, and the other end of the insulator is fixed on the copper bar (4) through bolts.