A busbar with a stepped arrangement structure

Abstract

The embodiment of the present invention discloses a busbar with a stepped arrangement structure, characterized in that it includes: a base 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 a second busbar assembly; the first spare plate is fixed to the center of the board surface on any side of the base plate; one end of the first busbar assembly and the second busbar assembly are both fixed to the first spare plate through an insulating connection assembly, and the other ends of the first busbar assembly and the second busbar assembly are fixed to the respective corresponding second spare plates through an insulating connection assembly to form a current output terminal; the portion of the busbar assembly extending to the other side of the base plate serves as a current input terminal. The solution described in the present invention occupies a small space, can realize the output of multiple cables, and has a large creepage distance and electrical clearance between each busbar assembly, and has the advantages of safety, reliability, easy installation and maintenance, etc.

Description

Technical Field

[0001] The invention relates to the technical field of yaw collector ring busbars in the field of wind power generation, and in particular to a busbar with a stepped arrangement structure. Background Art

[0002] With the continuous development of wind power generation systems in my country, high-power units in the wind power industry have gradually occupied the market. As the power increases, the transmitted current increases accordingly. Affected by factors such as space, cable specifications and economy, the process of transmitting current requires shunting and converging to meet the current transmission under specific conditions.

[0003] However, due to the limited radial space of the tower and the large number of output cables of the yaw collector ring, it is necessary to invent a bus with a compact structure that can meet the safe creepage distance and electrical clearance between the busbars. Summary of the invention

[0004] Based on this, in order to solve the deficiencies in the prior art, a busbar with a stepped arrangement structure is proposed.

[0005] A busbar with a stepped arrangement structure, characterized in that it includes: a base 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 a second busbar assembly; the first spare plate is fixed to the center position of the board surface on any side of the base plate; one end of the first busbar assembly and the second busbar assembly are both fixed to the first spare plate through an insulating connection assembly, and the other ends of the first busbar assembly and the second busbar assembly are fixed to their respective corresponding second spare plates through an insulating connection assembly to form a current output end; the part of the busbar assembly extending to the other side of the base plate serves as a current input end.

[0006] Optionally, in one embodiment, the first busbar assembly / second busbar assembly has a plurality of bent plates, each of the bent plates forms a stepped structure on the plate surface on any side of the base plate, and the heights of each bent plate in the stepped structure from the plate surface are arranged in a regular pattern of increasing or decreasing in sequence.

[0007] Optionally, in one embodiment, the portion of the bent plate extending to the other side of the bottom plate includes a straight plate end and a bent end.

[0008] Optionally, in one embodiment, the base plate is provided with a first through hole and two second through holes with the center line of the first through hole as the central symmetry axis; the first through hole is located at the center of the base plate and the first spare plate is fixed in the first through hole, and the second spare plate is fixed in the second through hole.

[0009] Optionally, in one embodiment, the insulating connection assembly includes an insulating clip, and the insulating clip can fix the busbar assembly on the first spare plate or the second spare plate.

[0010] Optionally, in one of the embodiments, the insulating connection assembly further includes an insulating support column, and the insulating support column is fixed on the base plate.

[0011] Optionally, in one of the embodiments, the current input terminal is connected to a current sharing bus of an external brush via a cable interface.

[0012] Optionally, in one of the embodiments, the current output end is connected to the output cable by providing a fixing plate having a plurality of output cable interfaces.

[0013] Implementing the embodiments of the present invention will have the following beneficial effects:

[0014] The solution described in the present invention occupies a small space, can realize the output of multiple cables, and has a large creepage distance and electrical clearance between each busbar assembly, and has the advantages of safety, reliability, easy installation and maintenance, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] in:

[0017] Figure 1 is a schematic structural diagram of a busbar with a stepped arrangement structure in one embodiment;

[0018] Figure 2 is a schematic structural diagram of a current input terminal of a busbar having a stepped arrangement structure in one embodiment;

[0019] In the figure: 1. first bending plate, 2. second bending plate, 3. third bending plate, 4. fourth bending plate, 5. fifth bending plate, 6. sixth bending plate, 7. first spare plate, 8. insulating clamp, 9. bottom plate, 10. insulating support column, 11. fixing plate, 12. second spare plate, 13. straight plate end, 14. bent end. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. It is understood that the terms "first", "second", etc. used in the present invention can be used to describe various elements in this article, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of the present application, the first element can be referred to as the second element, and similarly, the second element can be the first element. Both the first element and the second element are elements, but they are not the same element.

[0022] In this embodiment, a busbar with a stepped arrangement structure is proposed for use on the yaw collector ring of a wind turbine. Figure 1-2 As shown, it includes: a base plate 9, a first spare plate 7, a second spare plate, an insulating connection assembly, and a busbar assembly, wherein the busbar assembly includes a first busbar assembly and a second busbar assembly; the first spare plate 7 is fixed to the center position of the board surface on any side of the base plate 9; one end of the first busbar assembly and the second busbar assembly are fixed to the first spare plate 7 through an insulating connection assembly, and the other ends of the first busbar assembly and the second busbar assembly are fixed to their respective corresponding second spare plates 12 through an insulating connection assembly to form a current output end; the part of the busbar assembly extending to the other side of the base plate 9 serves as a current input end.

[0023] In some specific embodiments, the first busbar assembly / second busbar assembly has a plurality of bending plates, each of which forms a step structure on the plate surface on any side of the base plate, and the height of each bending plate in the step structure is arranged in a regular manner of increasing or decreasing from the plate surface. In some more specific embodiments, the first busbar assembly includes three bending plates, namely the first bending plate 1, the second bending plate 2, and the third bending plate 3, each of which forms a step structure on the plate surface on any side of the base plate, and the height of each bending plate in the step structure is arranged in a regular manner of decreasing from the plate surface. The second busbar assembly also includes three bending plates, namely the fourth bending plate 4, the fifth bending plate 5, and the sixth bending plate 6, each of which also forms a step structure on the plate surface of the base plate, and the height of each bending plate in the step structure is arranged in a regular manner of decreasing from the plate surface. The busbar structure utilizes the space of the bottom plate in a staggered arrangement, so that the busbar actually occupies a small space, is convenient for outputting multiple cables, and has a large creepage distance and electrical clearance between more than ten busbar components.

[0024] Depend on Figure 1 It can be seen that one end of the first busbar assembly and the second busbar assembly are jointly arranged on the first spare plate, and the other end is respectively arranged on the second spare plate to form a busbar structure with one end located on the same center line and the other end staggered to the left and right.

[0025] In some specific embodiments, the portion of the bent plate extending to the other side of the bottom plate includes a straight plate end 13 and a bent end 14. Figure 2 It can be seen that the straight plate ends of each bent plate of the first busbar assembly and the bent ends of each bent plate of the second busbar assembly are located on the same straight line, and the bent ends of each bent plate of the first busbar assembly and the straight plate ends of each bent plate of the second busbar assembly are located on the same straight line; therefore, two effective current input ends can be formed.

[0026] 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 the central axis of symmetry; the first through hole is located at the center of the bottom plate and 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 is a square structure, wherein a first through hole is arranged in the middle, which is a rectangular through hole, and two second through holes are arranged on both sides of the first through hole with the center line of the first through hole as the central axis of symmetry, the second through holes are rectangular through holes, and the length and width of the first through hole are both greater than the length and width of the second through hole, so as to facilitate the passage of multiple bus bars.

[0027] In some specific embodiments, the insulating connection assembly includes an insulating clip 8, which can fix the busbar assembly on the first spare plate 7 or the second spare plate 12, and the insulating connection assembly also includes an insulating support column 10, which is fixed on the bottom plate 9. Furthermore, the insulating clip 8 and the insulating support column 10 are fixed to the bottom plate and each spare plate by bolts, the first spare plate 7 or the second spare plate 12 is fixed to the bottom plate by bolts, and the bottom plate is fastened to the side of the box by bolts.

[0028] In some specific embodiments, the current input terminal A is connected to the current balancing bus of the external brush by setting a cable interface. The current output terminal B is connected to the output cable by setting a fixing plate with multiple output cable interfaces. In a more specific embodiment, the fixing plate 11 adopts a rectangular structure, and 4 threaded holes are set in the middle of its plate surface. The position of each threaded hole is consistent with the bus bar, which is convenient for single-sided operation to connect the cable terminal.

[0029] In summary, in this case, each busbar assembly is provided with a stepped structure to increase the creepage distance and electrical clearance of the busbar, thereby improving the safety and reliability of the busbar.

[0030] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A busbar with a stepped arrangement structure, It is characterized in that include: A base 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 a second busbar assembly; the first spare plate is fixed to the center of the plate surface on any side of the base plate; one end of the first busbar assembly and the second busbar assembly are fixed to the first spare plate through an insulating connection assembly, and the other ends of the first busbar assembly and the second busbar assembly are fixed to the respective corresponding second spare plates through an insulating connection assembly to form a current output end; the part of the busbar assembly extending to the other side of the base plate serves as a current input end; The first busbar assembly / the second busbar assembly has a plurality of bent plates, each of which forms a stepped structure on the plate surface on any side of the bottom plate, and the height of each bent plate in the stepped structure from the plate surface is arranged in a regular manner of increasing or decreasing in sequence; The part of the bending plate extending to the other side of the base plate includes a straight plate end and a bent end. The straight plate ends of each bending plate of the first busbar assembly and the bent ends of each bending plate of the second busbar assembly are located on the same straight line, and the bent ends of each bending plate of the first busbar assembly and the straight plate ends of each bending plate of the second busbar assembly are located on the same straight line.

2. The busbar having a stepped arrangement structure according to claim 1, It is characterized in that The base plate is provided with a first through hole and two second through holes with the center line of the first through hole as the central symmetry axis; the first through hole is located at the center of the base plate and the first spare plate is fixed in the first through hole, and the second spare plate is fixed in the second through hole.

3. The busbar having a stepped arrangement structure according to claim 1, It is characterized in that The insulating connection assembly includes an insulating clip, and the insulating clip can fix the busbar assembly on the first spare plate or the second spare plate.

4. The busbar having a stepped arrangement structure according to claim 3, It is characterized in that The insulating connection assembly also includes an insulating support column, and the insulating support column is fixed on the bottom plate.

5. The busbar having a stepped arrangement structure according to claim 1, It is characterized in that The current input end is connected to the external current sharing bar of the brush by setting a cable interface.

6. The busbar having a stepped arrangement structure according to claim 1, It is characterized in that The current output end is connected to the output cable through a fixing plate, and the fixing plate and the output cable are connected to set a plurality of output cable interfaces.

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