CN111193361A

CN111193361A - Busbar with ladder arrangement structure

Info

Publication number: CN111193361A
Application number: CN202010184501.5A
Authority: CN
Inventors: 谭富强; 王智超
Original assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Current assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-05-22

Abstract

The embodiment of the invention discloses a bus bar with a step arrangement structure, which is characterized by comprising the following components: the bus bar assembly comprises a first bus bar assembly and a second bus bar assembly; the first spare plate is fixed at the center of the plate surface on any side of the bottom plate; one ends of the first bus plate assembly and the second bus plate assembly are fixed on the first spare plate through insulating connecting assemblies, and the other ends of the first bus plate assembly and the second bus plate assembly are fixed on the corresponding second spare plate through the insulating connecting assemblies to form current output ends; and the part of the bus plate assembly extending out of the other side of the bottom plate is used as a current input end. The scheme of the invention has small occupied space, can realize the output of a plurality of cables, has large creepage distance and electric clearance among the bus plate assemblies, and has the advantages of safety, reliability, easy installation and maintenance and the like.

Description

Busbar with ladder arrangement structure

Technical Field

The invention relates to the technical field of yawing collecting ring bus bars in the field of wind power generation, in particular to a bus bar with a stepped arrangement structure.

Background

With the continuous development of wind power generation systems in China, high-power units in the wind power industry gradually occupy the market. Due to the increase of power, the transmitted current is correspondingly increased, and the current transmission under specific conditions needs to be met by shunting, converging and the like in the current transmission process under the influence of factors such as space, cable specification, economy and the like.

However, because the radial space of the tower is limited and the number of output cables of the yawing collecting ring is large, the invention needs to provide a bus bar which has a compact structure and can meet the requirements of safe creepage distance and electric clearance between the bus bars.

Disclosure of Invention

In order to overcome the defects in the prior art, the bus bar with the stepped arrangement structure is particularly provided.

A bus bar having a stepped arrangement structure, comprising: the bus bar assembly comprises a first bus bar assembly and a second bus bar assembly; the first spare plate is fixed at the center of the plate surface on any side of the bottom plate; one ends of the first bus plate assembly and the second bus plate assembly are fixed on the first spare plate through insulating connecting assemblies, and the other ends of the first bus plate assembly and the second bus plate assembly are fixed on the corresponding second spare plate through the insulating connecting assemblies to form current output ends; and the part of the bus plate assembly extending out of the other side of the bottom plate is used as a current input end.

Optionally, in one embodiment, the first bus plate assembly/the second bus plate assembly has a plurality of bent plates, each bent plate forms a stepped structure on the plate surface on any side of the bottom plate, and the heights of the bent plates in the stepped structure from the plate surface are sequentially increased or decreased regularly.

Optionally, in one embodiment, a portion of the bending plate extending to the other side of the bottom plate includes a straight plate end and a bending end.

Optionally, in one embodiment, a first through hole and two second through holes with a center line of the first through hole as a central symmetry axis are formed in the bottom plate; the first through hole is located in the center of the bottom plate, the first spare plate is fixed in the first through hole, and the second spare plate is fixed in the second through hole.

Optionally, in one embodiment, the insulating connection assembly includes an insulating clip, and the insulating clip can fix the bus bar assembly on the first spare plate or the second spare plate.

Optionally, in one embodiment, the insulation connection assembly further includes an insulation support column, and the insulation support column is fixed on the bottom plate.

Optionally, in one embodiment, the current input terminal is connected to the current share bar of the external brush through a cable interface.

Optionally, in one embodiment, the current output end is connected to the output cable by providing a fixing plate having a plurality of output cable interfaces.

The embodiment of the invention has the following beneficial effects:

the scheme of the invention has small occupied space, can realize the output of a plurality of cables, has large creepage distance and electric clearance among the bus plate assemblies, and has the advantages of safety, reliability, easy installation and maintenance and the like.

Drawings

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

FIG. 1 is a schematic structural view of a bus bar having a step arrangement structure according to an embodiment;

FIG. 2 is a schematic diagram of a current input terminal of the bus bar having the step arrangement structure according to an embodiment;

in the figure: 1. the bending device comprises a first bending plate, a second bending plate, a third bending plate, a fourth bending plate, a fifth bending plate, a sixth bending plate, a first spare plate, a second spare plate, a third spare plate, a fourth bending plate, a fifth bending plate, a sixth bending plate, a second spare plate, a third spare plate, a fourth spare plate, an insulating clamp, a bottom plate, a fourth spare plate, a fifth bending plate, a sixth bending plate, a fourth spare plate, a fifth spare plate, a sixth bending plate, a second spare plate, a third spare plate, a.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application. The first and second elements are both elements, but they are not the same element.

In the present embodiment, a busbar with a ladder arrangement structure is proposed, for use on a yaw slip ring of a wind turbine, as shown in fig. 1-2, which includes: the device comprises a bottom plate 9, a first spare plate 7, a second spare plate, an insulation connecting assembly and a bus plate assembly, wherein the bus plate assembly comprises a first bus plate assembly and a second bus plate assembly; the first spare plate 7 is fixed at the center of the plate surface on any side of the bottom plate 9; one ends of the first bus plate assembly and the second bus plate assembly are fixed on the first spare plate 7 through insulating connecting assemblies, and the other ends of the first bus plate assembly and the second bus plate assembly are fixed on the corresponding second spare plates 12 through insulating connecting assemblies to form current output ends; the part of the bus bar assembly protruding to the other side of the bottom plate 9 serves as a current input terminal.

In some specific embodiments, the first bus plate assembly/the second bus plate assembly has a plurality of bending plates, each bending plate forms a stepped structure on the plate surface on any one side of the bottom plate, and the heights of the bending plates from the plate surface in the stepped structure are sequentially increased or decreased regularly. In some more specific embodiments, the first bus bar assembly includes 3 bending plates, that is, a first bending plate 1, a second bending plate 2, and a third bending plate 3, and each bending plate forms a stepped structure on the plate surface of any one side of the bottom plate, and each bending plate is away from the height of the plate surface in the stepped structure and is arranged in a sequentially decreasing rule. The second collecting plate assembly also comprises 3 bending plates, namely a fourth bending plate 4, a fifth bending plate 5 and a sixth bending plate 6, wherein the bending plates are also arranged on the surface of the bottom plate to form a stepped structure, and the bending plate distances in the stepped structure are sequentially degressive regular arrangement. The bus bar structure is used by staggering the board surface space of the bottom board, so that the actual occupied space of the bus bar is small, a plurality of cables can be conveniently output, and the creepage distance and the electric clearance between more than ten bus bar assemblies are large.

As can be seen from fig. 1, one end of the first bus plate assembly and one end of the second bus plate assembly are disposed on the first spare plate, and the other ends are disposed on the second spare plate respectively, so as to form a bus bar structure with one end located on the same center line and the other ends staggered left and right.

In some specific embodiments, the portion of the bending plate extending to the other side of the bottom plate comprises a straight plate end 13 and a bending end 14. As can be seen from fig. 2, the straight end of each bent plate of the first bus plate assembly and the bent end of each bent plate of the second bus plate assembly are located on the same straight line, and the bent end of each bent plate of the first bus plate assembly and the straight end of each bent plate of the second bus plate assembly are located on the same straight line; two effective current inputs can thus be formed.

In some specific embodiments, the bottom plate 9 is provided with a first through hole and two second through holes with the center line of the first through hole as a central symmetry axis; the first through hole is located at the center of the bottom plate, the first spare plate 7 is fixed in the first through hole, and the second spare plate 12 is fixed in the second through hole. In a more specific embodiment, the bottom plate 9 has a square structure, a first through hole, which is a rectangular through hole, is disposed at a middle position of the square structure, two second through holes are disposed on two sides of the first through hole, which are symmetric about a center line of the first through hole, the second through holes are rectangular through holes, and the length and width of the first through hole are both greater than those of the second through holes, so that a plurality of busbars can pass through the second through holes.

In some specific embodiments, the insulating connection assembly includes an insulating clip 8, the insulating clip 8 can fix the bus bar assembly on the first spare plate 7 or the second spare plate 12, and the insulating connection assembly further includes an insulating support column 10, and the insulating support column 10 is fixed on the bottom plate 9. Further, the insulating clamp 8 and the insulating support column 10 are fixed to the bottom plate and each spare plate by bolts, and the first spare plate 7 or the second spare plate 12 is fixed to the bottom plate fastened to the side face of the box body by bolts.

In some specific embodiments, the current input end a is connected with a current equalizing bar of an external brush through a cable interface. The current output end B is connected with an output cable through a fixing plate with a plurality of output cable interfaces. In a more specific embodiment, the fixing plate 11 is a rectangular structure, and 4 threaded holes are formed in the middle of the plate surface, and the positions of the threaded holes are consistent with those of the bus bars, so that the cable terminals can be connected by one-side operation conveniently.

In summary, the step structure is provided for each bus board assembly, so that the creepage distance and the electrical clearance of the bus bar are increased, and the safety and the reliability of the bus bar are further improved.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A busbar with a stepped arrangement structure, characterized in that it comprises: a bottom plate, a first spare plate, a second spare plate, an insulating connection assembly, and a busbar assembly, wherein the busbar assembly includes a first busbar assembly and The second busbar assembly; the first spare plate is fixed on the center of the board surface on either side of the bottom plate; one end of the first busbar assembly and the second busbar assembly are both fixed to the center by an insulating connection assembly. the first backup board, and the other ends of the first busbar assembly and the second busbar assembly are fixed on the corresponding second backup boards through insulating connection components to form a current output end; the busbar The part of the assembly protruding to the other side of the base plate serves as a current input terminal.

2 . The busbar having a stepped arrangement structure according to claim 1 , wherein the first busbar assembly/second busbar assembly has a plurality of bent plates, and each of the bent plates is located in the A stepped structure is formed on the board surface on any side of the bottom plate, and the heights of each bending plate from the board surface in the stepped structure are arranged in a regular increasing or decreasing order.

3 . The bus bar with a stepped arrangement structure according to claim 2 , wherein the part of the stepped bent plate extending to the other side of the bottom plate comprises a straight plate end and a bent end. 4 .

4 . The bus bar with a stepped arrangement structure according to claim 1 , wherein the bottom plate is provided with a first through hole and two second through holes with a center line of the first through hole as a central axis of symmetry. 5 . a through hole; the first through hole is located at the center of the bottom plate, the first backup plate is fixed in the first through hole, and the second backup plate is fixed in the second through hole.

5 . The bus bar with a stepped arrangement structure according to claim 1 , wherein the insulating connection assembly comprises an insulating clip, and the insulating clip can fix the bus bar assembly on the first spare board or the Second standby board.

6 . The bus bar with a stepped arrangement structure according to claim 5 , wherein the insulating connection assembly further comprises an insulating support column, and the insulating support column is fixed on the bottom plate. 7 .

7 . The bus bar with a stepped arrangement structure according to claim 1 , wherein the current input end is connected to the current balancing bar of an external brush by setting a cable interface. 8 .

8 . The busbar with a stepped arrangement structure according to claim 1 , wherein the current output end is connected to the output cable through a fixing plate, and a plurality of output cable interfaces are provided for connecting the fixing plate and the output cable. 9 .