CN112259343A

CN112259343A - End ring fixing structure of air-core reactor

Info

Publication number: CN112259343A
Application number: CN202011159742.0A
Authority: CN
Inventors: 徐晓明; 李军; 李文杰; 刘占千; 韩帅
Original assignee: Shandong Electrical Engineering and Equipment Group Co Ltd
Current assignee: Shandong Electrical Engineering and Equipment Group Co Ltd; Shandong Power Equipment Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-01-22

Abstract

The invention relates to an end ring fixing structure of an air reactor, which comprises: the coil is placed in a circular framework inside the coil, the upper end of the framework is respectively connected with an upper pressing plate and more than two upper end rings, and the lower end of the framework is respectively connected with more than two lower end rings and a lower pressing plate. The framework penetrates through the upper end ring, the lower end ring and the pressing plate, so that the upper end ring, the lower end ring and the pressing plate are fixed together through the framework, the structure is firm and reliable, and the safe operation of the reactor is ensured. The end ring fixing knot has the advantages of easy realization of manufacturing process, simple integral structure and reliable installation and fixation.

Description

End ring fixing structure of air-core reactor

Technical Field

The invention belongs to the technical field of air reactors, and particularly relates to an end ring fixing structure of an air reactor.

Background

The neutral point grounding reactor is of a hollow structure and only has one coil, and no iron core is arranged in the coil. The upper and lower insulating distances of the coil are large, and a large number of upper end rings and lower end rings need to be placed. The end ring is a structure that a paper ring is stuck with a cushion block, is directly placed on the upper part and the lower part of the coil and is only pressed by an upper pressing plate, a lower pressing plate and an aluminum screen. If the transportation is improper, cause the not hard up scheduling problem that drops of end ring cushion easily.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide an end ring fixing structure of an air reactor, which solves the problem of end ring fixing of the air reactor. The technical scheme adopted by the invention is as follows:

an end coil fixing structure of an air-core reactor, comprising: place the circular shape skeleton in the coil inside, the upper end of skeleton connect respectively and go up top end circle more than two and press plate, the lower extreme of skeleton connects respectively lower part end circle more than two and holding down plate, upper portion end circle and lower part end circle constitute by end circle paper circle and end circle gasket. The framework penetrates through the upper end ring, the lower end ring and the pressing plate, so that the upper end ring, the lower end ring and the pressing plate are fixed together through the framework, the structure is firm and reliable, and the safe operation of the reactor is ensured.

The invention has the beneficial effects that:

the end ring fixing knot has the advantages of easy realization of manufacturing process, simple integral structure and reliable installation and fixation.

According to the invention, the coil framework is additionally arranged in the coil, and the supporting strips of the coil framework are lengthened, so that the upper end ring and the lower end ring of the coil and the pressing plate are provided with holes and fixed together through the supporting strips of the framework, the structure is ensured to be reliable, and the safe operation of the reactor is ensured.

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 should be apparent that the drawings in the following description are specific embodiments of the invention, and that other drawings within the scope of the present application can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a front view of an end ring fixing structure of an embodiment of the invention;

FIG. 2 is a front view of a skeletal frame of an embodiment of the present invention;

FIG. 3 is a top view of a skeletal frame in accordance with an embodiment of the present invention;

FIG. 4 is a front view of an upper end ring and a lower end ring of an embodiment of the present invention;

FIG. 5 is a front view of the upper platen and lower platen of an embodiment of the present invention;

in the figure, 1-upper aluminum screen, 2-upper pressure plate, 3-upper end ring, 4-coil, 5-framework insulating ring, 6-framework, 7-framework stay, 8-lower end ring, 9-lower pressure plate, 10-lower aluminum screen, 11-PET binding tape, 12-end ring paper ring, 13-end ring cushion block, 14-first opening, 15-second opening and 16-third opening.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings.

Fig. 1 is a front view of an end ring fixing structure according to an embodiment of the present invention. An end coil fixing structure of an air-core reactor, comprising: and a framework 6 arranged inside the coil 4, wherein the upper end of the framework 6 is respectively connected with the upper pressing plate 2 and the 5 upper end rings 3, and the lower end of the framework 6 is respectively connected with the 5 lower end rings 8 and the lower pressing plate 9. The upper side of the upper pressure plate 2 is provided with an upper aluminum screen 1, and the lower side of the lower pressure plate 9 is provided with a lower aluminum screen 10. The upper pressing plate 2 is fixed with the upper aluminum screen 1, and the lower pressing plate 9 is fixed with the lower aluminum screen 10 through long screws.

FIG. 2 is a front view of the frame of an embodiment of the present invention; fig. 3 is a plan view of the frame according to the embodiment of the present invention. The framework 6 is formed by combining 5

framework insulating rings

5 and 5

framework supporting strips

7, 5 grooves matched with the cross sections of the framework supporting strips 7 are uniformly formed in the outer edges of the framework insulating rings 5 in the circumferential direction, the framework supporting strips 7 are clamped in the grooves of the framework insulating rings 5 and are tightly bound through PET binding belts 11 to form a circular framework 5.

The length of the framework stay 7 can penetrate through the upper pressing plate 2, the upper end ring 3, the lower end ring 8 and the lower pressing plate 9. The lower end of the framework stay 7 is flush with the lower surface of the lower pressing plate 9, and the upper end of the framework stay 7 is 10mm lower than the upper surface of the upper pressing plate 2.

As shown in fig. 4, is a front view of the upper end ring and the lower end ring of an embodiment of the present invention. Upper portion end ring 3 and lower part end ring 8 comprise end ring paper circle 12 and end ring cushion 13, and the internal diameter of upper portion end ring 3 and lower part end ring 8 is less than the internal diameter of skeleton 6, evenly offers 5 first trompils 14 on the circumferencial direction on upper portion end ring 3 and lower part end ring 8, the size and the position of first trompil 14 cooperate with skeleton stay 7, skeleton stay 7 passes first trompil 14. The first apertures 14 are located to avoid the end ring spacers 13.

Fig. 5 is a front view of the upper and lower platens according to an embodiment of the present invention. The upper pressing plate 2 and the lower pressing plate 9 are of square plate structures, third openings 16 are formed in the upper pressing plate 2 and the lower pressing plate 9, and the positions and the sizes of the third openings 16 are matched with the first openings 14. The third opening 16 in the lower platen 9 is a through hole, and the third opening 16 in the upper platen 2 is a non-through hole (the non-through thickness is about 10 mm). The framework stay 7 penetrates through the upper end ring, the lower end ring and the pressing plate, so that the upper end ring, the lower end ring and the pressing plate are fixed together through the framework stay 7, the structure is firm and reliable, and the safe operation of the reactor is ensured.

Further, 4 second open holes 15 are respectively arranged at four corner positions of the upper pressing plate 2 and the lower pressing plate 9, and the mechanical strength of the end ring fixing structure is further improved through screw fastening.

Finally, it is to be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims

1. An end ring fixing structure of an air-core reactor is characterized by comprising: place at inside circular shape skeleton (6) of coil (4), the upper end of skeleton (6) connect respectively and go up top board (2) and upper portion end circle (3) more than two, lower part end circle (8) and holding down plate (9) more than two are connected respectively to the lower extreme of skeleton (6), upper portion end circle (3) and lower part end circle (8) constitute by end circle paper circle (12) and end circle cushion (13).

2. An end ring fixing structure of an air-core reactor according to claim 1, characterized in that the framework (6) is formed by combining more than two framework insulating rings (5) and more than three framework supporting strips (7).

3. An end ring fixing structure of an air-core reactor according to claim 2, characterized in that the circumferential outer edge of the framework insulating ring (5) is uniformly provided with grooves with the number and size matched with those of the framework supporting strips (7), and the framework supporting strips (7) are clamped in the grooves of the framework insulating ring (5) and are tightly bound through PET binding bands (11).

4. An end ring fixing structure of an air-core reactor according to claim 3, characterized in that the length of the skeleton stay (7) penetrates through the upper platen (2), the upper end ring (3), the lower end ring (8) and the lower platen (9); the lower end part of the framework stay (7) is flush with the lower surface of the lower pressing plate (9), and the upper end part of the framework stay (7) is 10mm lower than the upper surface of the upper pressing plate (2).

5. An end ring fixing structure of an air-core reactor according to claim 1, characterized in that the inner diameters of the upper end ring (3) and the lower end ring (8) are smaller than the inner diameter of the framework (6), more than three first openings (14) are uniformly formed in the circumferential direction of the upper end ring (3) and the lower end ring (8), the size and the position of each first opening (14) are matched with the framework stay (7), and the position of each first opening (14) avoids the end ring cushion block (13).

6. An end ring fixing structure of an air-core reactor according to claim 5, characterized in that the upper press plate (2) and the lower press plate (9) are square plate-shaped structures, third openings (16) are formed in the upper press plate (2) and the lower press plate (9), and the positions and sizes of the third openings (16) are matched with the first openings (14).

7. An end coil fixing structure of an air-core reactor according to claim 6, characterized in that the third opening (16) on the lower pressure plate (9) is a through hole, and the third opening (16) on the upper pressure plate (2) is a non-through hole.

8. An end coil fixing structure of an air-core reactor according to claim 7, characterized in that 4 second openings (15) are provided at four corner positions of the upper platen (2) and the lower platen (9), respectively.

9. An end ring fixing structure of an air-core reactor according to any one of claims 1-8, characterized in that the upper side of the upper press plate (2) is provided with an upper aluminum screen (1), and the lower side of the lower press plate (9) is provided with a lower aluminum screen (10).

10. The end ring fixing structure of the air-core reactor is characterized in that four corners of the upper pressure plate (2) and the upper aluminum screen (1) and four corners of the lower pressure plate (9) and the lower aluminum screen (10) are fixed through long screws.