CN110752072A - Induction coil of insulating part - Google Patents
Induction coil of insulating part Download PDFInfo
- Publication number
- CN110752072A CN110752072A CN201911201885.0A CN201911201885A CN110752072A CN 110752072 A CN110752072 A CN 110752072A CN 201911201885 A CN201911201885 A CN 201911201885A CN 110752072 A CN110752072 A CN 110752072A
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- China
- Prior art keywords
- induction coil
- barrel
- convex
- insulating part
- outer side
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/64—Insulating bodies with conductive admixtures, inserts or layers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention provides an induction coil of an insulating part, and belongs to the technical field of power equipment. The insulating part partial discharge device solves the problems that the partial discharge performance of the existing insulating part is easy to be unqualified and the like. This induction coil of insulating part, including the barrel, be provided with the several through-hole on the lateral wall of barrel, the barrel is made by semi-conductive silicon rubber, has on the lateral surface of barrel and round the annular bulge loop that is that the barrel periphery sets up, and the bulge loop has the several and arranges in proper order to the direction of the other end along the one end of barrel, and the through-hole setting is on the barrel lateral wall between the bulge loop. The induction coil structure enables the partial discharge performance of the insulating part in the processing process and the using process to be more easily qualified.
Description
Technical Field
The invention belongs to the technical field of power equipment, and relates to an induction coil of an insulating part.
Background
The solid insulator is an insulation component in power equipment and comprises a shell made of epoxy resin insulation materials, wherein an induction coil is arranged in the shell and used for shielding a uniform electric field, and the partial discharge characteristic of the insulator is improved. Chinese patent document discloses an insulating member [ application number: CN 201720585118.4; the notice number is: 206742587U ], comprises a body, and a high-low voltage shielding net is arranged in the body. The high-low voltage shielding net is an induction coil, all electrified parts in the high-low voltage shielding net form an equipotential whole body by the arrangement of the high-low voltage shielding net, and unqualified partial discharge of an insulating part due to external discharge of the electrified parts can be avoided.
The induction coil is generally made of a metal conductive material, such as copper, aluminum, or stainless steel. In the process of processing the insulating part, the induction coil is placed in a mold, then the epoxy resin material is molded by casting through the mold, and the induction coil is fixed in the shell after casting. However, the adhesion degree between the metal material and the epoxy resin material is not high, the difference of the expansion coefficients is large, and after the insulation piece poured under the high-temperature condition is cooled, large stress exists between the induction coil and the shell, so that gap defects such as joint surface cracking, peeling gaps, internal cavities and the like are easily caused, and therefore the insulation piece is easily unqualified in partial discharge, and the insulation of the insulation piece is deteriorated.
Disclosure of Invention
The invention aims to provide an induction coil of an insulating part aiming at the problems in the prior art, and solves the technical problem that the partial discharge performance of the existing insulating part is easily unqualified.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an induction coil of insulating part, includes the barrel, be provided with the several through-hole on the lateral wall of barrel, its characterized in that, the barrel is made by semi-conductive silicon rubber, the annular bulge loop that is that has round the setting of barrel periphery on the lateral surface of barrel, the bulge loop has the several and arranges in proper order along the one end of barrel to the direction of the other end, the through-hole sets up on the barrel lateral wall between the bulge loop.
The semiconductive silicon rubber is prepared by adding conductive filler into silicon rubber, so that the semiconductive silicon rubber has conductive performance while maintaining the performance of the silicon rubber. The cylinder is made of semi-conductive silicon rubber, and the shell is made of epoxy resin, so that the gap between the joint surface of the cylinder and the shell can be reduced by utilizing the performance of the silicon rubber in the semi-conductive silicon rubber, and the partial discharge performance of the insulating part is easier to be qualified. The arrangement of the plurality of convex rings can improve the structural strength of the cylinder body, and prevent the cylinder body made of the semi-conductive silicon rubber from deforming in the process of casting and molding the insulating part to influence the partial discharge performance of the insulating part. The through-hole sets up on the barrel lateral wall between the bulge loop, avoids the through-hole to cause the destruction to the structure of bulge loop, guarantees that the bulge loop has the effect of reinforcing structural performance, guarantees in the course of working and the use that insulating part partial discharge performance is qualified stability. This induction coil is made by semi-conductive silicon rubber, and is provided with the several bulge loop at the lateral surface of barrel, and the through-hole setting has improved the bonding property between induction coil and the casing on the barrel lateral wall between the bulge loop simultaneously, has improved the structural strength of barrel simultaneously, and such holistic structure of induction coil makes the insulating part in course of working and the use the partial discharge performance of putting the performance more qualified easily.
In the induction coil of the insulating part, the through hole is formed between each convex ring and the adjacent convex ring on the side wall of the cylinder body. The through hole is positioned in the epoxy resin and can form a connecting column after being poured, so that the induction coil is stably connected to the shell. Epoxy can flow in the through-hole at the pouring in-process, all is provided with the through-hole between every bulge loop and the adjacent bulge loop on the barrel lateral wall, can avoid epoxy to form the cavity between two adjacent bulge loops at the pouring in-process, makes insulating part partial discharge performance more qualified easily.
In the induction coil of the insulator, the outer side surface of the convex ring is in an arc shape. Therefore, the stress at the joint surface of the convex ring and the shell can be reduced, the generation of gaps is reduced, the combination between the cylinder and the shell cannot be influenced by the arrangement of the convex ring, and the partial discharge performance of the insulating part is ensured to be more qualified.
In the induction coil of the insulating part, a convex raised line is further arranged on the outer side surface of the cylinder body, and the raised line and at least two raised rings are arranged in an intersecting manner.
The convex strip connects the convex ring with the convex ring, so that the structural strength of the cylinder body can be further improved, the cylinder body made of semi-conductive silicon rubber can be further prevented from deforming in the process of casting and molding the insulating part to influence the partial discharge performance of the insulating part, and the partial discharge performance of the insulating part is easier to be qualified.
In the above-mentioned induction coil of the insulating member, the convex strips have a plurality and are arranged in order along the outer periphery of the cylinder. The convex rings are connected through more convex strips, the structural strength of the cylinder body can be further improved, the cylinder body made of semi-conductive silicon rubber can be further prevented from deforming in the process of casting and molding the insulating part to influence the partial discharge performance of the insulating part, and the partial discharge performance of the insulating part is easier to be qualified.
In the induction coil of the insulating part, at least one through hole is formed in a lattice unit formed by the convex ring and the convex strip on the outer side surface of the cylinder.
The through holes are formed in the lattice unit formed by the protruding rings and the protruding strips in a surrounding mode, epoxy resin can flow into the through holes in the pouring process, cavities can be prevented from being formed in the lattice unit in the pouring process by the epoxy resin, and the insulating part partial discharge performance is enabled to be more easily qualified.
In the induction coil of the insulating part, the outer side surface of the convex strip and the outer side surface of the convex ring are in arc transition. Therefore, stress between the transition position of the convex strip and the convex ring and the shell joint surface can be reduced, the combination between the cylinder and the shell cannot be influenced by the arrangement of the convex strip and the convex ring, and the partial discharge performance of the insulating part is ensured to be more easily qualified.
In the induction coil of the insulating part, two ends of the cylinder are both open, the side walls of the ports at two ends of the cylinder are both provided with convex edges protruding outwards, the convex strip extends to intersect with at least one convex edge, and at least one through hole is arranged in a lattice unit formed by the convex ring, the convex edge and the convex strip on the outer side surface of the cylinder.
The convex edge is arranged on the side wall of the port of the cylinder body, so that the structural strength of the port of the cylinder body can be improved, the partial discharge performance of the insulating part is prevented from being influenced by the deformation of the end part of the cylinder body made of the semi-conductive silicon rubber in the process of casting and molding the insulating part, and the partial discharge performance of the insulating part is easier to be qualified. The extension of the torus to the ledge can further improve the structural strength at the barrel port. Through holes are also formed in the lattice unit formed by the convex edges, the convex strips and the convex rings, so that a cavity is prevented from being formed between the convex edges and the convex rings in the pouring process of epoxy resin, and the partial discharge performance of the insulating part is easier to be qualified.
In the induction coil of the insulating part, a convex connecting part is further arranged on the outer side surface of the cylinder body, and a connecting part is fixed on the connecting part. The connecting piece is convenient for installing other parts in the insulating piece.
Compared with the prior art, the invention has the following advantages:
the cylinder is made of semi-conductive silicon rubber, so that the cylinder has silicon rubber performance and conductive performance, the outer side surface of the cylinder is provided with a convex annular convex ring, and the through hole is formed in the side wall of the cylinder between the convex rings, so that the partial discharge performance of the insulating part is easier to be qualified. The outer side surface of the cylinder body is also provided with a convex raised line, and the through holes are arranged in the lattice units enclosed by the raised rings and the raised lines, so that the partial discharge performance of the insulating part is further more qualified.
Drawings
FIG. 1 is a perspective view of the present induction coil;
FIG. 2 is a cross-sectional view of the present induction coil;
fig. 3 is a left side view of fig. 2.
In the figure, 1, a cylinder; 1a, a through hole; 1b, a convex ring; 1c, convex strips; 1d, convex edge; 1e, a connecting part; 2. a connecting member.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1-3, an induction coil of an insulating member comprises a cylindrical barrel 1, wherein the barrel 1 is made of semi-conductive silicon rubber. Both ends of the cylinder body 1 are open, and the side walls of the ports at both ends of the cylinder body 1 are provided with annular convex edges 1d which protrude outwards. The outer side surface of the barrel body 1 is provided with a convex connecting portion 1e, the connecting portion 1e is provided with a connecting hole, a connecting piece 2 is fixed in the connecting hole, and the outer end surface of the connecting piece 2 is provided with a threaded hole. The lateral wall of the cylinder body 1 is provided with a plurality of through holes 1a, and the axes of the through holes 1a are vertical to the axis of the cylinder body 1. The cylinder body 1 is provided with an imaginary plane passing through the axis of the cylinder body 1, the connecting hole is vertical to the imaginary plane, the axes of part of the through holes 1a are positioned on the imaginary plane, and the axes of the rest of the through holes 1a are vertical to the imaginary plane, so that the forming of the induction coil is convenient.
The outer side surface of the cylinder 1 is provided with an annular convex ring 1b arranged around the periphery of the cylinder 1, and the outer side surface of the convex ring 1b is arc-shaped. The convex rings 1b are provided with a plurality of through holes 1a, and are sequentially arranged along the direction from one end to the other end of the cylinder 1, part of the through holes 1a are arranged on the side wall of the cylinder 1 between the convex rings 1b, and the other part of the through holes 1a are arranged on the side wall of the cylinder 1 between the convex rings 1b and the convex edges 1 d. Through holes 1a are formed between each convex ring 1b and the adjacent convex ring 1b on the side wall of the cylinder body 1, and through holes 1a are formed between each convex edge 1d and the adjacent convex ring 1b on the side wall of the cylinder body 1. The outer side surface of the barrel body 1 is also provided with a convex strip 1c which is protruded along the axial direction of the barrel body 1, the convex strip 1c is intersected with at least two convex rings 1b, and the convex strip 1c extends to be intersected with at least one convex edge 1 d. The outer side part of the convex strip 2 protrudes out of the outer side surface of the convex ring 1b intersected with the convex strip, so that the structural strength of the barrel body 1 is improved better. The convex strips 1c are provided in plural and arranged in sequence along the outer periphery of the barrel 1. At least one through hole 1a is arranged in a lattice unit formed by the convex ring 1b and the convex strip 1c on the outer side surface of the cylinder 1, and at least one through hole 1a is also arranged in a lattice unit formed by the convex ring 1b, the convex edge 1d and the convex strip 1c on the outer side surface of the cylinder 1. The outer side surface of the convex strip 1c and the outer side surface of the convex ring 1b are in arc transition, and the outer side surface of the convex strip 1c and the outer side surface of the convex edge 1d are in arc transition. The number of the through holes 1a, the protruding rings 1b, and the protruding strips 1c is set as required.
The semiconductive silicon rubber is prepared by adding conductive filler into silicon rubber, so that the semiconductive silicon rubber has conductive performance while maintaining the performance of the silicon rubber, and is a common material. The conductive filler can be a metal conductive material, such as silver powder, nickel powder, copper powder and the like, and can also be a nonmetal conductive material, such as stone mill, carbon black and the like. The cylinder 1 is made of semi-conductive silicon rubber, and the shell is made of epoxy resin, so that the gap between the cylinder 1 and the shell joint surface can be reduced by utilizing the performance of the silicon rubber in the semi-conductive silicon rubber, and the partial discharge performance of the insulating part is easier to be qualified. The arrangement of the convex edge 1d, the convex ring 1b and the convex strip 1c can improve the structural strength of the cylinder 1, and prevent the cylinder 1 made of the semi-conductive silicon rubber from deforming in the process of casting and molding the insulating part so as to influence the partial discharge performance of the insulating part. The through hole 1a can form a connecting column after epoxy resin is poured, so that the induction coil is stably connected to the shell. Epoxy can flow in through-hole 1a in the pouring process, and through-hole 1a that sets up on the barrel 1 lateral wall can also avoid epoxy to form the cavity between two adjacent bulge loops 1b in the pouring process, makes insulating part partial discharge performance more qualified easily. The induction coil has an integral structure, so that the partial discharge performance of the insulating part in the processing process and the using process is easier to be qualified.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides an induction coil of insulating part, includes barrel (1), be provided with several through-hole (1a) on the lateral wall of barrel (1), its characterized in that, barrel (1) is made by semi-conductive silicon rubber, have on the lateral surface of barrel (1) round barrel (1) periphery setting be annular bulge loop (1b), bulge loop (1b) have the several and arrange in proper order along the one end of barrel (1) to the direction of the other end, through-hole (1a) sets up on barrel (1) lateral wall between bulge loop (1 b).
2. The induction coil of an insulator according to claim 1, characterized in that the through hole (1a) is provided between each protruding ring (1b) and the adjacent protruding ring (1b) on the side wall of the cylinder (1).
3. The induction coil of an insulator according to claim 1, characterized in that the outer side surface of the protruding ring (1b) is circular arc-shaped.
4. An induction coil of an insulating member according to any one of claims 1 to 3, wherein the outer side surface of the cylindrical body (1) is further provided with a protruding rib (1c), and the protruding rib (1c) is intersected with at least two protruding rings (1 b).
5. The induction coil of insulating elements according to claim 4, characterized in that said ribs (1c) are in a plurality and arranged in sequence along the periphery of the cylindrical body (1).
6. An induction coil of an insulator according to claim 5, characterized in that at least one of said through holes (1a) is provided on the outer side of said cylindrical body (1) in a lattice unit surrounded by said protruding ring (1b) and said protruding strip (1 c).
7. The induction coil of an insulator according to claim 4, characterized in that the outer side of the rib (1c) is in arc transition with the outer side of the protruding ring (1 b).
8. An induction coil of an insulating member according to claim 5, wherein both ends of the cylindrical body (1) are open, the end walls of both ends of the cylindrical body (1) are provided with convex edges (1d) protruding outwards, the convex strips (1c) extend to intersect with at least one convex edge (1d), and at least one through hole (1a) is formed in a lattice unit formed by the convex ring (1b), the convex edge (1d) and the convex strips (1c) on the outer side surface of the cylindrical body (1).
9. An induction coil of an insulating member according to any one of claims 1 to 3, characterized in that a convex connecting portion (1e) is further provided on the outer side surface of the cylinder (1), and the connecting member (2) is fixed on the connecting portion (1 e).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201885.0A CN110752072A (en) | 2019-11-29 | 2019-11-29 | Induction coil of insulating part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201885.0A CN110752072A (en) | 2019-11-29 | 2019-11-29 | Induction coil of insulating part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110752072A true CN110752072A (en) | 2020-02-04 |
Family
ID=69285120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911201885.0A Pending CN110752072A (en) | 2019-11-29 | 2019-11-29 | Induction coil of insulating part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110752072A (en) |
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2019
- 2019-11-29 CN CN201911201885.0A patent/CN110752072A/en active Pending
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