CN108492944B

CN108492944B - Vacuum high-voltage insulator

Info

Publication number: CN108492944B
Application number: CN201810347766.5A
Authority: CN
Inventors: 毛庆全
Original assignee: Naang Technology Suzhou Co ltd
Current assignee: Naang Technology Suzhou Co ltd
Priority date: 2018-04-18
Filing date: 2018-04-18
Publication date: 2023-09-22
Anticipated expiration: 2038-04-18
Also published as: CN108492944A

Abstract

The application provides a vacuum high-voltage insulator, which comprises an insulator body, wherein the insulator body is of a sectional variable cross-section structure, a cavity is formed in the insulator body, an insert component is accommodated in the cavity, the insert component comprises two power terminals and two grounding terminals, the power terminals and the grounding terminals are sleeved on an insulating supporting positioning block, the end parts of the two grounding terminals are in threaded connection with two sides of a grounding terminal connecting block, and the middle part of the grounding terminal connecting block is in threaded connection with a columnar terminal; the two grounding terminals are respectively connected with the two contact rings through two connecting conductors, and the terminals and the contact rings form a complete loop. The insulator provided by the application has the advantages that through the optimization of structural design, the external dimension is reduced on the premise of ensuring good processability, excellent connection reliability and good flashover resistance level, and the use amount of raw materials is saved, so that the cost is reduced.

Description

Vacuum high-voltage insulator

Technical Field

The application relates to a vacuum high-voltage insulation device, in particular to a vacuum high-voltage insulator.

Background

The existing vacuum high-voltage insulation device adopts a relatively simple outline form in design, has the problems that the surface flashover resistance voltage is low and destructive surface flashover is easy to occur when the vacuum high-voltage insulation device works near the rated high-voltage upper limit, so that the product is in functional failure and extremely lost; meanwhile, the existing internal connection structure design also has the problems of complex structure, difficult manufacture, poor connection after molding due to stress in the molding process and the like, and the manufacturing cost is high.

Disclosure of Invention

The technical problems to be solved are as follows: the application aims to improve the flashover-resistant voltage level of the surface of an insulator from the aspect of design, and solves the problems that the existing vacuum high-voltage insulator device has large volume and is easy to generate destructive surface flashover when working near the upper limit of rated high voltage; meanwhile, through optimization of structural design, the external dimension of the cable is reduced on the premise of ensuring good processability, excellent connection reliability and good flashover resistance level, and the use amount of raw materials is saved, so that the cost is reduced.

The technical scheme is as follows: the vacuum high-voltage insulator comprises an insulator body, wherein the insulator body is of a sectional variable cross-section structure and sequentially comprises a head, an upper cone with a small upper part and a big lower part, a cylinder, a lower cone with a small upper part and a big lower part and a base, a cavity is formed in the insulator body, an insert component is accommodated in the cavity, the insert component comprises two power terminals and two grounding terminals, the power terminals and the grounding terminals are sleeved on an insulating supporting positioning block, the end parts of the two grounding terminals are in threaded connection with two sides of a grounding terminal connecting block, and the middle part of the grounding terminal connecting block is in threaded connection with a columnar terminal; the two grounding terminals are respectively connected with the two contact rings through two connecting conductors, and the columnar terminals and the contact rings form a complete loop.

Further, the taper angle of the upper cone and the lower cone is 45 °.

Further, the insulator body head is of a concave structure.

Further, the ground terminal connecting block is fixed in a hollow convex insulation embedded body top groove, a hole is formed in the middle of the groove, and the columnar terminal penetrates through the hole and is connected with the ground terminal connecting block in a threaded mode.

Further, two through holes are formed in the top of the convex insulation embedded body, and the connecting conductor penetrates through the through holes to be connected with the two contact rings.

Further, the contact ring is arranged on the inner side of the convex insulation embedded body.

Furthermore, the side surface of the convex insulation embedded body is provided with a plurality of concave grooves, and a cover plate is arranged in each concave groove.

Further, the height of the insulator body is less than or equal to 180mm.

The beneficial effects are that: the insulator of the application has the following advantages:

1. the insulator body adopts a sectional variable cross-section structure, and the cone part adopts a 45-degree cone angle shape, so that the flashover resistance voltage of the surface is improved;

2. the insulator surface of the application has no groove, thus ensuring the whole easy processing property;

3. the head concave structure of the insulator is designed to enable the electrode to be buried in the insulator, so that the electric field distribution is improved, and the flashover resistance voltage is improved;

4. the internal optimized embedded connection design of the insulator ensures the connection reliability of the internal connection in the product forming process;

5. the application effectively reduces the overall height (the general height is more than 200 mm) while ensuring the insulation performance, thereby reducing the consumption of raw materials and lowering the cost.

The foregoing description is only an overview of the present application, and is intended to provide a better understanding of the present application, as it is embodied in the following description, with reference to the preferred embodiments of the present application and the accompanying drawings. Specific embodiments of the present application are given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

fig. 1 is a perspective view of an insulator according to the present application;

FIG. 2 is a cross-sectional view of an insulator of the present application;

FIG. 3 is a B-B cross-sectional view of an insulator of the present application;

the reference numerals in the figures are: 1. insulator body, 2, insulation embedding body, 3, ground terminal connecting block, 4, ground terminal, 5, column terminal, 6, connecting conductor, 7, power supply terminal, 8, insert subassembly, 9, contact ring, 10, apron, 11, insulation support locating piece.

Description of the embodiments

The application will be described in detail below with reference to the drawings in combination with embodiments.

Referring to fig. 1-3, a vacuum high-voltage insulator comprises an insulator body 1, wherein the insulator body 1 is of a sectional variable cross-section structure and sequentially comprises an upper cone with a small upper part and a large lower part, a cylinder body, a lower cone with a small upper part and a large lower part and a base, the conical angles of the upper cone and the lower cone are 45 degrees, the sectional variable cross-section structure is adopted in the outer design of the insulator body 1, grooves are not formed in the surface of the insulator body 1, the integral workability is ensured, the cone part adopts a 45-degree cone angle shape, and the surface flashover resistance voltage is improved.

A cavity is formed in the insulator body 1, an insert component 8 is accommodated in the cavity, the insert component 8 comprises two power terminals 7 and two grounding terminals 4, the power terminals 7 and the grounding terminals 4 are sleeved on an insulating supporting positioning block 11, the end parts of the two grounding terminals 4 are in threaded connection with two sides of a grounding terminal connecting block 3, and the middle part of the grounding terminal connecting block 3 is in threaded connection with a columnar terminal 5; the two grounding terminals 3 are respectively connected with two contact rings 9 through two connecting conductors 6, and the columnar terminals 5 and the contact rings 9 form a complete loop;

further, the ground terminal connecting block 3 is fixed in a groove at the top of a hollow convex insulation insert body 2, a hole is formed in the middle of the groove, and the columnar terminal 5 penetrates through the hole and is in threaded connection with the ground terminal connecting block 3;

further, two through holes are formed in the top of the convex insulation insert body 2, and the connecting conductor 6 penetrates through the through holes to be connected with two contact rings 9;

further, the contact ring 9 is arranged at the inner side of the convex insulation embedded body 2;

further, the side surface of the convex insulation embedded body 2 is provided with a plurality of concave grooves, and a cover plate 10 is arranged in each concave groove;

the internal optimized embedded connection design of the insulator ensures the connection reliability of the internal connection in the product forming process.

The head of the insulator body 1 is of a concave structure, and the concave structure of the head of the insulator is designed, so that the electrodes are buried in the insulator, the electric field distribution is improved, and the flashover resistance voltage is improved.

The insulator body 1 of the application has the height less than or equal to 180mm, ensures the insulation performance, and simultaneously effectively reduces the overall height (the general height is more than 200 mm), thereby reducing the consumption of raw materials and lowering the cost.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a vacuum high voltage insulator, includes insulator body, its characterized in that: the insulator body is of a sectional variable cross-section structure and sequentially comprises a head, an upper cone with a small upper part and a large lower part, a cylinder body, a lower cone with a small upper part and a large lower part and a base, a cavity is formed in the insulator body, an insert component is contained in the cavity, the insert component comprises two power terminals and two grounding terminals, the power terminals and the grounding terminals are sleeved and inserted on an insulating supporting positioning block, the end parts of the two grounding terminals are in threaded connection with two sides of a grounding terminal connecting block, and the middle part of the grounding terminal connecting block is in threaded connection with a columnar terminal; the two grounding terminals are respectively connected with the two contact rings through two connecting conductors, and the columnar terminals and the contact rings form a complete loop.

2. A vacuum high voltage insulator according to claim 1, wherein: the taper angle of the upper cone and the lower cone is 45 degrees.

3. A vacuum high voltage insulator according to claim 1, wherein: the insulator body head is of a concave structure.

4. A vacuum high voltage insulator according to claim 1, wherein: the grounding terminal connecting block is fixed in a hollow convex insulation embedded body top groove, a hole is formed in the middle of the groove, and the columnar terminal penetrates through the hole and is connected with the grounding terminal connecting block in a threaded mode.

5. The vacuum high voltage insulator according to claim 4, wherein: two through holes are formed in the top of the convex insulating embedded body, and the connecting conductor penetrates through the through holes to connect the two contact rings.

6. A vacuum high voltage insulator according to claim 5, wherein: the contact ring is arranged on the inner side of the convex insulation embedded body.

7. A vacuum high voltage insulator according to claim 5, wherein: the side surface of the convex insulation embedded body is provided with a plurality of concave grooves, and cover plates are arranged in the concave grooves.

8. A vacuum high voltage insulator according to claim 1, wherein: the height of the insulator body is less than or equal to 180mm.