CN218333421U

CN218333421U - Air-core reactor with novel clamping structure

Info

Publication number: CN218333421U
Application number: CN202222504809.0U
Authority: CN
Inventors: 霍铨广; 胥军; 廖军红; 林锦荣; 周扬; 李霞; 易吉良
Original assignee: Sunten Electric Equipment Co ltd
Current assignee: Sunten Electric Equipment Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-17
Anticipated expiration: 2032-09-20

Abstract

The utility model provides an air reactor with a novel clamping structure, which comprises a winding, wherein the winding is provided with a hollow cavity, and the air reactor also comprises a plurality of clamping structures which are arranged around the winding so as to clamp the winding; the clamping structure includes: two connection plates respectively disposed at upper and lower sides of the winding; an inner clamping screw disposed within the hollow cavity; an outer clamping screw disposed outside the winding; the inner clamping screw and the outer clamping screw penetrate through the two connecting plate pieces. The utility model discloses a set up a plurality of interior clamping screw rods in the inboard circumference of winding, then circumference sets up a plurality of outer clamping screw rods outside the winding to fix the connection plate of both sides about lieing in the winding, in order to press from both sides the winding tightly fixed, replaced pressing from both sides tight fixed mode passing the winding body, make the circulation scope grow of electric current in the winding, effectively strengthened air-core reactor's through-flow capacity.

Description

Air-core reactor with novel clamping structure

Technical Field

The utility model relates to a technical field of reactor, in particular to air core reactor with novel tight structure of clamp.

Background

The air reactor is an inductive high-voltage electric appliance used for limiting short-circuit current, reactive compensation and phase shift in an electric power system, and magnetic flux forms a loop through air, so the air reactor is called as an air reactor.

Chinese patent CN201520527786.2 discloses an air-core reactor, in which a conductor is composed of more than one layer of multi-turn windings wound spirally, a clamping screw is arranged between turns of the windings, the windings are wound spirally on the clamping screw, and the upper and lower ends of the windings are fixed by a cushion block respectively. Although the winding can be clamped and fixed in the mode that the screw rod penetrates through the winding to clamp, a through hole needs to be formed in the vertical direction of the winding, the size of the winding is reduced, the cross section area is reduced, the current flowing range is reduced, and the current capacity of the air-core reactor is weakened.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an air-core reactor with a novel clamping structure, which is intended to effectively enhance the flow capacity of the air-core reactor.

In order to achieve the above purpose, the technical scheme of the utility model has:

the utility model provides an air reactor with a novel clamping structure, which comprises a winding, wherein the winding is provided with a hollow cavity, and the air reactor also comprises a plurality of clamping structures which are arranged around the winding so as to clamp the winding; the clamping structure includes: two connection plates respectively disposed at upper and lower sides of the winding; an inner clamping screw disposed within the hollow cavity; an outer clamping screw disposed outside the winding; the inner clamping screw and the outer clamping screw penetrate through the two connecting plate pieces.

Compared with the prior art, the utility model provides a pair of air core reactor with novel tight structure of clamp sets up a plurality of interior clamping screw rods in the inboard circumference of winding, then circumference sets up a plurality of outer clamping screw rods outside the winding, utilize the nut respectively with the cooperation of screwing up of interior clamping screw rod and outer clamping screw rod, fix the connection plate of both sides about lieing in the winding, it is fixed to press from both sides the winding tightly, replaced passing the winding body and pressed from both sides tight fixed mode, the winding need not drilling, make the circulation scope grow of electric current in the winding, the through-flow capacity of air core reactor has effectively been strengthened.

In a preferred embodiment, the clamping structure further comprises a plurality of first connection seats arranged at equal heights, and the first connection seats are arranged on the connection plate on the upper side of the winding.

In a preferred embodiment, a spacer is arranged between the connecting plate and the winding.

In a preferred embodiment, a positioning part is arranged on the connecting plate; the cushion block is provided with a butt joint part; the positioning part is matched with the butt joint part.

In a preferred embodiment, the positioning portion includes a plurality of protrusions; the docking portion includes a plurality of recesses; the plurality of the recesses are correspondingly matched with the plurality of the protrusions.

In a preferred embodiment, the inner clamping screw and the outer clamping screw are sleeved with a heat shrinkable tube and a polytetrafluoroethylene tube, and the polytetrafluoroethylene tube is arranged on the outer layer of the heat shrinkable tube.

In a preferred embodiment, the air-core reactor further comprises a base; the clamping structure further comprises a second connecting seat, the second connecting seat is arranged on the connecting plate located on the lower side of the winding, an arc-shaped clamping piece is arranged on the second connecting seat and provided with a plurality of through holes, the arc-shaped clamping piece is clamped on the base and penetrates through the through holes and the base through screws to be fixed.

In a preferred embodiment, the winding is formed by spirally winding a plurality of turns of integrally cast aluminum alloy; turn-to-turn base plates are arranged between the turns and are formed by overlapping a plurality of base plates with step parts, and a ventilation gap is arranged between every two adjacent base plates.

In a preferred embodiment, the inter-turn pads are arranged in a raised manner with respect to the inner and outer surfaces of the winding.

In a preferred embodiment, the air-core reactor further comprises a trunnion ring disposed between the spacer and the winding.

For a better understanding and practice, the present invention is described in detail in the following figures in conjunction with the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an air-core reactor of the present invention;

fig. 2 is a schematic plan view of the air-core reactor of the present invention;

FIG. 3 is a schematic view of the clamping structure and the trunnion ring of the present invention;

fig. 4 is a schematic structural diagram of the winding of the present invention;

fig. 5 is a schematic structural view of a second connecting seat of the present invention;

FIG. 6 is a schematic structural diagram of the cushion block of the present invention;

FIG. 7 is a schematic structural view of the trunnion ring of the present invention;

fig. 8 is a schematic view of the overlapping of a plurality of backing plates according to the present invention.

Description of reference numerals:

100-winding, 110-hollow cavity, 120-inter-turn backing plate, 121-backing plate, 122-ventilation gap, 200-clamping structure, 210-connecting plate, 211-positioning part, 220-internal clamping screw, 230-external clamping screw, 240-first connecting seat, 250-cushion block, 251-butt joint part, 260-second connecting seat, 261-arc clamping piece, 300-base and 400-backing ring.

Detailed Description

In order to better illustrate the present invention, the following detailed description of the present invention is made with reference to the accompanying drawings.

Specifically, in conjunction with fig. 1 to 8, the present invention provides an air core reactor with a novel clamping structure, which includes a winding 100, the winding 100 having a hollow cavity 110, and a plurality of clamping structures 200 disposed around the winding 100 to clamp the winding 100; the clamping structure 200 includes: two connection plates 210 respectively disposed at upper and lower sides of the winding 100; an inner clamping screw 220 disposed within the hollow cavity 110; an outer clamping screw 230 disposed outside the winding 100; the inner clamping screw 220 and the outer clamping screw 230 are inserted into the two connecting plate members 210.

Compared with the prior art, the utility model provides a pair of air core reactor with novel clamp structure 200, inboard circumference at winding 100 sets up a plurality of interior clamping screw 220, then circumference sets up a plurality of outer clamping screw 230 outside winding 100, utilize the nut respectively with interior clamping screw 220 and the cooperation of screwing up of outer clamping screw 230, fix the connection plate 210 that lies in winding 100 upper and lower both sides, it is fixed to press from both sides winding 100 tightly, replaced pressing from both sides tight fixed mode passing winding 100 body, the winding need not drilling, the sectional area increases, make the circulation scope grow of electric current in the winding, the through-flow capacity of air core reactor has effectively been strengthened.

In this embodiment, the clamping structure 200 further includes a plurality of first connection seats 240 disposed at the same height, and the first connection seats 240 are disposed on the connection plate 210 on the upper side of the winding 100 for connecting the coil assemblies.

Preferably, the first connection seat 240 and the connection plate 210 may be a single structure, such that the first connection seat 240 includes a portion of the connection plate 210, which is convenient for installation and cost-effective.

In this embodiment, a spacer 250 is disposed between the connecting plate 210 and the winding 100. Because the upside of winding 100 is the spiral surface, and the surface height is inconsistent the utility model discloses in, through the connecting plate with if set up cushion 250 between the group to such high settings such as first connecting seat 240 are so as to make things convenient for coil pack's installation.

Further, a positioning portion 211 is disposed on the connecting plate 210; the cushion block 250 is provided with a butt joint part 251; the positioning part 211 is matched with the butt joint part 251 to fix the position of the cushion block 250, so that unnecessary displacement of the cushion block 250 in the clamping process is avoided, and convenience is brought to installation of workers.

Further, the positioning part 211 includes a plurality of protrusions; the docking portion 251 includes a plurality of recesses; the plurality of the recesses are correspondingly matched with the plurality of the protrusions, and the mounting positions of the cushion blocks 250 are fixed through the corresponding matching of the protrusions and the recesses, so that the structure is simple and practical.

In this embodiment, the air core reactor further includes a base 300; the clamping structure 200 further comprises a second connecting seat 260, the second connecting seat 260 is arranged on the lower side of the winding 100, the connecting plate 210 is provided with an arc-shaped clamping piece 261, the arc-shaped clamping piece 261 is provided with a plurality of through holes, the arc-shaped clamping piece 261 is clamped on the base 300 and penetrates through the through holes and the base 300 to be fixed through screws.

Preferably, the second connecting seat 260 and the connecting plate 210 may be a single structure, so that the second connecting seat 260 includes the connecting plate 210, which is convenient to install and cost-effective.

In this embodiment, the inner clamping screw 220 and the outer clamping screw 230 are both sleeved with a heat shrink tube and a teflon tube, and the teflon tube is disposed on the outer layer of the heat shrink tube to improve the moisture resistance and the insulation performance of the air-core reactor.

In the present embodiment, the winding 100 is made of an aluminum alloy formed by casting integrally and spirally winding a plurality of turns; turn-to-turn pads 120 are arranged among the turns, the turn-to-turn pads 120 are formed by overlapping a plurality of pads 121 with stepped portions, and a ventilation gap 122 is arranged between two adjacent pads 121. In the present invention, the ventilation gap 122 is used for heat dissipation; in addition, for the turn-to-turn backing plate 120 that polylith backing plate 121 interval distribution constitutes, the utility model discloses a turn-to-turn backing plate 120 comprises the backing plate 121 overlap joint that the polylith has the step portion, has increased the creepage distance along the horizontal direction to improve air-core reactor's impact resistance and insulating properties.

It should be noted that the creepage distance refers to a charged area between two conductive parts measured along an insulating surface, where the insulating material around the conductor exhibits a charging phenomenon due to the electric polarization of the insulating material under different use conditions. In the present invention, the winding 100 belongs to a conductor, the turn-to-turn pad 120 belongs to an insulator, and the creepage principle belongs to the technical principle that is clearly known to those skilled in the art, and the present invention is not described herein in detail.

Further, the inter-turn shim plate 120 is convexly disposed with respect to the inner and outer surfaces of the winding 100 to increase a creepage distance, thereby improving shock resistance and insulation performance of the air core reactor.

In this embodiment, the air core reactor further includes a trunnion ring 400, and the trunnion ring 400 is disposed between the spacer 250 and the winding 100 to increase a compression area, so that the winding 100 is firmly fixed.

In the description of the present invention, it should be understood that the terms "vertical", "horizontal", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. An air reactor with a novel clamping structure comprises a winding, wherein the winding is provided with a hollow cavity, and is characterized by further comprising a plurality of clamping structures which are arranged around the winding so as to clamp the winding;

the clamping structure includes:

two connection plates respectively disposed at upper and lower sides of the winding;

an inner clamping screw disposed within the hollow cavity;

an outer clamping screw disposed outside the winding;

the inner clamping screw and the outer clamping screw penetrate through the two connecting plate pieces.

2. The air-core reactor with a novel clamping structure according to claim 1, characterized in that:

the clamping structure further comprises a plurality of first connecting seats which are arranged at the same height, and the first connecting seats are arranged on the connecting plate located on the upper side of the winding.

3. The air-core reactor having a novel clamping structure according to claim 2, characterized in that:

and a cushion block is arranged between the connecting plate and the winding.

4. The air-core reactor with a novel clamping structure according to claim 3, characterized in that:

a positioning part is arranged on the connecting plate;

the cushion block is provided with a butt joint part;

the positioning part is matched with the butt joint part.

5. The air-core reactor having a novel clamping structure according to claim 4, characterized in that:

the positioning part comprises a plurality of bulges;

the interface portion includes a plurality of recesses;

the plurality of the recesses are correspondingly matched with the plurality of the protrusions.

6. The air-core reactor having a novel clamping structure according to claim 1, characterized in that:

the air reactor also comprises a base;

the clamping structure further comprises a plurality of second connecting seats, the second connecting seats are arranged on the connecting plates and located on the lower side of the winding, arc-shaped clamping pieces are arranged on the second connecting seats and provided with a plurality of through holes, the arc-shaped clamping pieces are clamped on the base and penetrate through the through holes and the base through screws to be fixed.

7. The air-core reactor having a novel clamping structure according to claim 1, characterized in that:

the inner clamping screw and the outer clamping screw are both sleeved with a heat shrink tube and a polytetrafluoroethylene tube, and the polytetrafluoroethylene tube is arranged on the outer layer of the heat shrink tube.

8. The air-core reactor having a novel clamping structure according to claim 1, characterized in that:

the winding is formed by spirally winding a plurality of turns of integrally cast aluminum alloy;

turn-to-turn base plates are arranged between the turns and are formed by overlapping a plurality of base plates with step parts, and a ventilation gap is arranged between every two adjacent base plates.

9. The air-core reactor having a novel clamping structure according to claim 8, characterized in that:

the inter-turn shim plates are disposed in a protruding manner relative to the inner and outer surfaces of the winding.

10. The air-core reactor with the novel clamping structure as claimed in claim 3, further comprising a trunnion ring, wherein the trunnion ring is arranged between the cushion block and the winding.