CN213025582U

CN213025582U - Integrated bilateral discharge lightning protection insulator

Info

Publication number: CN213025582U
Application number: CN202022272331.4U
Authority: CN
Inventors: 王一哲
Original assignee: Shandong Laiwu Porcelain Insulators Co ltd
Current assignee: Shandong Laiwu Porcelain Insulators Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-04-20
Anticipated expiration: 2030-10-13

Abstract

The utility model relates to a column type insulator and arrester production field specifically provide a two side discharge lightning protection insulators of integral type. Including insulator body and the plug of setting in insulator body inside, be provided with annular resistance card between insulator body and the plug, the plug bottom is connected with the steel cap, insulator body both sides all are provided with discharge electrode, the steel cap below is provided with down discharge electrode, be provided with the ball that discharges on going up discharge electrode, it is located the lower ball that discharges on the same straight line with last discharge ball to be provided with on the lower discharge electrode, it is provided with the discharge gap to go up between discharge ball and the lower ball that discharges. The functions of the insulator and the arrester are organically combined together, so that the insulator has the supporting function of the insulator and the voltage limiting function of the arrester. The core rod and the annular resistance card are skillfully combined together, and the pressure relief function of the annular resistance card and the strength advantage of the core rod are fully exerted.

Description

Integrated bilateral discharge lightning protection insulator

Technical Field

The utility model relates to a column type insulator and arrester production field specifically provide a two side discharge lightning protection insulators of integral type.

Background

In the field of overhead line laying, insulators and lightning arresters are indispensable configuration facilities. The insulator plays a role in drawing and supporting a wire in the power transmission line; the lightning arrester is an important overvoltage protector, and the overhead line is protected mainly by the nonlinear characteristic of a zinc oxide resistance valve plate. When a line is paved, the insulator and the lightning arrester are usually arranged in parallel in a power transmission line, so that the installation and maintenance difficulty is high; and in normal operation, the lightning arrester body has little electric current to pass through, and the resistance card is ageing easily, can shorten the life of lightning arrester.

SUMMERY OF THE UTILITY MODEL

To foretell not enough, the utility model provides a two side lightning protection insulators that discharge of integral type.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a two side discharge lightning protection insulators of integral type, includes insulator body and the plug of setting in insulator body inside, be provided with the loop type resistance card between insulator body and the plug, the plug bottom is connected with the steel cap, insulator body both sides all are provided with discharge electrode, the steel cap below is provided with down discharge electrode, upward be provided with discharge ball on the discharge electrode, be provided with on the discharge electrode down discharge ball that lies in same straight line with last discharge ball, upward be provided with discharge gap between discharge ball and the lower discharge ball.

Preferably, a plurality of limiting edges which are uniformly distributed are arranged in the circumferential direction of the outer side of the annular resistance card, and a plurality of limiting grooves matched with the limiting edges are arranged in the circumferential direction of the inner side of the insulator body. The arrangement of the limiting edges and the limiting grooves enables the annular resistance card to be arranged inside the insulator body more firmly, the relative rotation of the annular resistance card and the core rod is avoided, and the service life of the core rod is prolonged.

Preferably, the limiting edge is cylindrical or triangular prism.

Preferably, the lower discharge electrode is integrally C-shaped. The lower discharging balls are respectively positioned at two ends of the C-shaped structure, so that the lightning voltage can be quickly discharged through the discharging gaps at two sides after passing through the insulator body, and the C-shaped releasing efficiency is higher.

Preferably, the insulator body is made of silicon rubber. The insulator made of the silicon rubber has the characteristics of light weight, small volume, difficult breakage, high tensile strength and strong pollution performance. Meanwhile, the insulator made of the silicon rubber has good hydrophobicity, ageing resistance, leakage tracking resistance, electric corrosion resistance, high tensile strength, high bending strength, high mechanical strength, high impact resistance, high vibration resistance, high brittle fracture resistance, light weight and convenient installation and maintenance, and the installation size of the upper end and the lower end of the insulator is the same as that of the corresponding porcelain post insulator and can be used interchangeably.

Preferably, the steel cap is further provided with a bolt and a nut for fixing the insulator body.

The utility model has the advantages that: the utility model provides an integrated bilateral discharge lightning protection insulator, which has simple structure and reasonable design; the functions of the insulator and the arrester are organically combined together, so that the insulator has the supporting function of the insulator and the voltage limiting function of the arrester. In the insulator body, a ring-shaped resistance sheet is adopted, after a core rod with high strength penetrates through the ring-shaped resistance sheet, two ends of the core rod are connected with a connecting hardware fitting (a steel cap) in a compression joint mode, and then vulcanization molding is carried out.

And the insulating part at the lower end is also provided with double discharge gaps, so that lightning voltage can be quickly released through the discharge gaps at the two sides after passing through the insulator body. Thereby better protecting the whole line from the damage of lightning voltage. And because the discharge gap is arranged, no micro current passes through the insulator body in normal operation, so that the aging of the resistor disc is prevented, and the service life of the insulator body is prolonged.

Drawings

Fig. 1 is a schematic cross-sectional view of an insulator body according to the present invention;

fig. 2 is a schematic front view of the insulator body of the present invention;

fig. 3 is a schematic perspective view of the mounting bracket of the present invention;

fig. 4 is an exploded view of the mounting bracket of the present invention;

fig. 5 is an exploded view of the mounting bracket of another angle of the present invention.

The insulator comprises an insulator body 1, an insulator body 2, a core rod 3, a ring-shaped resistor disc 4, an upper discharge electrode 5, an upper discharge ball 6, a lower discharge electrode 7, a lower discharge ball 8, a steel cap 9, a bolt 10, a nut 301 and a limiting edge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The integrated double-side discharge lightning protection insulator shown in fig. 1-3 comprises an insulator body 1 and a core rod 2 arranged inside the insulator body 1, wherein an annular resistance disc 3 is arranged between the insulator body 1 and the core rod 2, the bottom of the core rod 2 is connected with a steel cap 8, upper discharge electrodes 4 are arranged on two sides of the insulator body 1, a lower discharge electrode 6 is arranged below the steel cap 8, an upper discharge ball 5 is arranged on the upper discharge electrode 4, a lower discharge ball 7 which is positioned on the same straight line as the upper discharge ball 5 is arranged on the lower discharge electrode 6, and a discharge gap is arranged between the upper discharge ball 5 and the lower discharge ball 7; the outer side circumferential direction of the annular resistance card is provided with a plurality of evenly distributed limiting edges 301, and the inner side circumferential direction of the insulator body 1 is provided with a plurality of limiting grooves matched with the limiting edges 301. The arrangement of the limiting edges 301 and the limiting grooves enables the annular resistance card to be more firmly arranged inside the insulator body 1, the relative rotation between the annular resistance card and the core rod 2 is avoided, and the service life of the core rod 2 is prolonged.

In this embodiment, the limiting edge 301 is a cylinder (as shown in fig. 4) or a triangular prism (as shown in fig. 5).

In this embodiment, the lower discharge electrode 6 is entirely of a "C" shape. The lower discharging balls 7 are respectively positioned at two ends of the C-shaped structure, and can be quickly released through discharging gaps at two sides after lightning voltage passes through the insulator body 1, and the C-shaped releasing efficiency is higher.

In this embodiment, the insulator body 1 is made of silicon rubber. The insulator made of the silicon rubber has the characteristics of light weight, small volume, difficult breakage, high tensile strength and strong pollution performance. Meanwhile, the insulator made of the silicon rubber has good hydrophobicity, ageing resistance, leakage tracking resistance, electric corrosion resistance, high tensile strength, high bending strength, high mechanical strength, high impact resistance, high vibration resistance, high brittle fracture resistance, light weight and convenient installation and maintenance, and the installation size of the upper end and the lower end of the insulator is the same as that of the corresponding porcelain post insulator and can be used interchangeably.

In this embodiment, the steel cap 8 is further provided with a bolt 9 and a nut 10 for fixing the insulator body 1.

The working principle is as follows: when the insulator is used, the nut 10 is unscrewed, the bolt 9 penetrates through the mounting hole in the mounting frame, the gasket is placed, the nut 10 is screwed, the annular resistance disc is adopted in the insulator body 1, the core rod 2 with high strength penetrates through the annular resistance disc, the two ends of the core rod are connected with the connecting hardware fitting (the steel cap 8) in a pressing mode, and then vulcanization molding is carried out; the lower insulating part is also provided with double discharge gaps, and when lightning voltage passes through the insulator body 1, the lightning voltage can be rapidly released through the discharge gaps on the two sides. Thereby better protecting the whole line from the damage of lightning voltage. And because the discharge gap is arranged, in normal operation, the insulator body 1 does not have micro current to pass through, so that the aging of the resistor disc is prevented, and the service life of the insulator body 1 is prolonged.

The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a two side discharge lightning protection insulators of integral type which characterized in that: including insulator body and the plug of setting in insulator body inside, be provided with annular resistance card between insulator body and the plug, the plug bottom is connected with the steel cap, insulator body both sides all are provided with discharge electrode, the steel cap below is provided with down discharge electrode, be provided with the ball that discharges on going up discharge electrode, it is located the lower ball that discharges on the same straight line with last discharge ball to be provided with on the lower discharge electrode, it is provided with the discharge gap to go up between discharge ball and the lower ball that discharges.

2. The integrated double-side discharge lightning protection insulator according to claim 1, wherein: the outer side circumferential direction of the annular resistance card is provided with a plurality of evenly distributed limiting edges, and the inner side circumferential direction of the insulator body is provided with a plurality of limiting grooves matched with the limiting edges.

3. The integrated double-side discharge lightning protection insulator according to claim 2, wherein: the limiting edge is cylindrical or triangular prism-shaped.

4. The integrated double-side discharge lightning protection insulator according to claim 3, wherein: the whole lower discharge electrode is in a C shape.

5. The integrated double-side discharge lightning protection insulator according to claim 4, wherein: the insulator body is made of silicon rubber.

6. The integrated double-side discharge lightning protection insulator according to claim 5, wherein: and the steel cap is also provided with a bolt and a nut for fixing the insulator body.