CN210984489U

CN210984489U - High-voltage reactor for improving field intensity

Info

Publication number: CN210984489U
Application number: CN201922267709.9U
Authority: CN
Inventors: 张刚; 朱小军
Original assignee: Nanjing Youliken Electric Co ltd
Current assignee: Nanjing Youliken Electric Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-07-10
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a improve high-voltage reactor of field intensity. This reactor includes iron core, insulating cylinder, coil and insulating casing, the coil includes first coil and the second coil that sets gradually from inside to outside, first coil and second coil are formed by first wire and second wire coiling in proper order, the line footpath of second wire is greater than the line footpath of first wire, the outer end of first wire is connected with the inner of second wire, the inner of first wire and the outer end of second wire set up respectively in insulating casing's the outside. The utility model discloses a divide into two coils in inside and outside different line footpaths with the coil, the line footpath of the coil in the outside is greater than the line footpath of inboard coil, records through the emulation, and when the line footpath of the coil in the outside was more than 1.5 times of the line footpath of inboard coil, reactor tip and outmost corona obviously reduced, very big improvement reactor tip and outmost field intensity, prolonged the life of product.

Description

High-voltage reactor for improving field intensity

Technical Field

The utility model relates to a high-voltage reactor field, concretely relates to improve high-voltage reactor of field intensity.

Background

The voltage distribution of the layered high-voltage reactor is low inside and high outside, and the external voltage of the single body can reach 60KV or even higher. The field intensity of the outside and the end part of the reactor is particularly concentrated under high voltage, and the accumulated damage can be generated to cable paper, insulating films, epoxy resin and other insulating materials after long-time operation, so that the safe operation of the reactor is threatened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-voltage reactor who improves field intensity to the not enough of prior art existence.

In order to achieve the above object, the utility model provides a high-voltage reactor of improvement field intensity, establish the insulating cylinder in the iron core outside and around establishing the coil in the insulating cylinder outside including iron core, cover, the outside package of coil, iron core and insulating cylinder is equipped with insulating casing, the coil includes first coil and the second coil that sets gradually from inside to outside, first coil and second coil are formed by first wire and second wire coiling in proper order, the line footpath of second wire is greater than the line footpath of first wire, the outer end of first wire is connected with the inner of second wire, the inner of first wire and the outer end of second wire set up respectively in insulating casing's the outside.

Further, the wire diameter of the second conducting wire is 1.5 to 2 times of the wire diameter of the first conducting wire.

Further, the second coil includes 2 to 3 layers of second conductive wires.

Furthermore, the outer end of the first lead is welded with the inner end of the second lead, and an insulating layer is wrapped at the welding position.

Further, the insulating layer is formed by wrapping a polyimide film or insulating paper.

Furthermore, the insulating shell is an epoxy resin shell, and the insulating cylinder is an epoxy resin insulating cylinder.

Has the advantages that: the utility model discloses a divide into two coils in inside and outside different line footpaths with the coil, the line footpath of the coil in the outside is greater than the line footpath of inboard coil, records through the emulation, and when the line footpath of the coil in the outside was more than 1.5 times of the line footpath of inboard coil, reactor tip and outmost corona obviously reduced, very big improvement reactor tip and outmost field intensity, prolonged the life of product.

Drawings

Fig. 1 is a schematic structural diagram of a high-voltage reactor with improved field strength according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a connection between a first conductive wire and a second conductive wire according to an embodiment of the present invention.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1 and 2, the embodiment of the present invention provides a high-voltage reactor with improved field strength, which includes an iron core 1, an insulating cylinder 2 and a coil 3. Wherein, the insulating cylinder 2 preferably adopts the epoxy insulating cylinder, and the insulating cylinder 2 cover is established in the iron core 1 outside, and coil 3 is around establishing in the outside of insulating cylinder 2, and then, insulating cylinder 2 separates iron core 1 and coil 3. An insulating shell 4 is wrapped outside the coil 3, the iron core 1 and the insulating cylinder 2, and the insulating shell 4 is preferably formed by pouring epoxy resin. The utility model discloses coil 3 first coil 31 and second coil 32 of embodiment. Wherein the first coil 31 is disposed outside the insulating cylinder 2, and the second coil 32 is disposed outside the first coil 31. The first coil 31 and the second coil 32 are formed by winding conducting wires with different wire diameters, specifically, the first coil is formed by winding a first conducting wire 5, the second coil 32 is formed by winding a second conducting wire 6, and the wire diameter of the second conducting wire 6 is larger than that of the first conducting wire 5. The outer end of the first wire 5 is connected with the inner end of the second wire 6, and the inner end of the first wire 5 and the outer end of the second wire 6 are respectively arranged on the outer side of the insulating shell 4 so as to be connected with an external cable when in use.

The wire diameter of the second wire 6 of the embodiment of the present invention is preferably set to 1.5 to 2 times the wire diameter of the first wire 5. While improving the field intensity of the outer layer, the phenomenon that the number of turns of the second lead wire 6 of each layer in the second coil 32 is too small and the width of the reactor is too large due to too thick wire diameter is avoided. The second coil 32 preferably comprises 2 to 3 layers of the second wire 6, while improving the field strength of the outer layer, while avoiding an excessive increase in the width of the reactor.

The utility model discloses the outer end of first wire 5 and the inner of second wire 6 are preferred to be adopted welded fastening to be connected, and the first wire 5 and the 6 outsides of second wire are wrapped up with insulating paint layer to turn-to-turn short and first coil 31 and second coil 32 short circuit can not appear, cause the influence to other positions in order to prevent welding position, preferably wrap up insulating layer 7 at welding position. The insulating layer 7 may be formed by wrapping some insulating material such as polyimide film or insulating paper.

Shielding plates 8 are further arranged in the insulating cylinders 2 at two ends of the iron core 1, the shielding plates 8 comprise epoxy resin plates 81 and shielding layers 82 arranged on the inner sides of the epoxy resin plates 81, and the shielding layers 82 can be formed by spraying semi-conductive paint such as TH 38-31. The epoxy resin plate 81 is provided with a plurality of material passing holes 83, the number of the material passing holes 83 is preferably 2 to 4, and when epoxy resin is poured, the epoxy resin can enter the insulating cylinder 2 and the iron core 1 through the material passing holes 83 so as to be fixed into a whole. The epoxy resin plate 81 is further provided with a positioning hole 84, and the positioning hole 84 is preferably provided at the center of the epoxy resin plate 81 and positioned with the mold through the positioning hole 84.

The above description is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described belong to the prior art or the common general knowledge to those skilled in the art. Without departing from the principle of the present invention, several improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a high-voltage reactor of improvement field intensity, includes that iron core, cover establish the insulating cylinder in the iron core outside and around establishing the coil in the insulating cylinder outside, the outside package of coil, iron core and insulating cylinder is equipped with insulating casing, its characterized in that, the coil includes first coil and the second coil that sets gradually from inside to outside, first coil and second coil are formed by first wire and second wire coiling in proper order, the line footpath of second wire is greater than the line footpath of first wire, the outer end of first wire is connected with the inner of second wire, the inner of first wire and the outer end of second wire set up the outside at insulating casing respectively.

2. The high-voltage reactor with improved field strength of claim 1, characterized in that the wire diameter of the second wire is 1.5 to 2 times the wire diameter of the first wire.

3. The high-voltage reactor with improved field strength of claim 1, characterized in that the second coil comprises 2 to 3 layers of second wire.

4. The high-voltage reactor with improved field strength as recited in claim 1, wherein the outer end of the first wire is welded to the inner end of the second wire, and an insulating layer is wrapped around the welding position.

5. The high-voltage reactor with improved field strength of claim 4, characterized in that the insulating layer is formed by wrapping a polyimide film or an insulating paper.

6. The high-voltage reactor with improved field strength of claim 1, characterized in that the insulating housing is an epoxy housing and the insulating cylinder is an epoxy insulating cylinder.

7. The high-voltage reactor for improving the field intensity according to claim 1, wherein shielding plates are further arranged in the insulating cylinders at two ends of the iron core, each shielding plate comprises an epoxy resin plate and a shielding layer arranged on the inner side of the epoxy resin plate, and a plurality of material passing holes and positioning holes are formed in the epoxy resin plate.