CN113130153A

CN113130153A - Composite porcelain insulator

Info

Publication number: CN113130153A
Application number: CN202110393989.7A
Authority: CN
Inventors: 高春雨; 商国林; 徐广平; 王培勇; 岳国辉; 丁志强; 徐康; 赵飞雄; 班晔辉; 王炜; 王晨曦; 刘源
Original assignee: State Grid Corp of China SGCC; State Grid Hebei Electric Power Co Ltd; Shijiazhuang Power Supply Co of State Grid Hebei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Hebei Electric Power Co Ltd; Shijiazhuang Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-07-16

Abstract

The invention relates to a composite porcelain insulator, which comprises a first insulator and a second insulator which are coaxial and arranged at intervals; a first connecting rod is fixedly arranged at the upper end of the first insulator, a second connecting rod is arranged at the upper end of the second insulator, and the upper end of the second connecting rod is fixedly connected with the lower end of the first insulator; the first connecting rod is rotatably provided with a cleaning device; the first insulator is the same as the second insulator in structure and comprises a porcelain body, an alumina layer, a metal anti-rust paint layer and a silicone rubber layer, wherein the alumina layer, the metal anti-rust paint layer and the silicone rubber layer are sequentially coated outside the porcelain body. The insulator can self-clean and drive birds, workers are not required to go up the tower for cleaning, the operation and maintenance requirements of the insulator can be met, and meanwhile the operation risk of the workers is avoided.

Description

Composite porcelain insulator

Technical Field

The invention belongs to the field of electric equipment, and particularly relates to a composite porcelain insulator.

Background

Insulators are devices that can withstand the action of voltage and mechanical stress, mounted between conductors of different electrical potentials or between a conductor and a grounded member. Insulators are various in types and shapes. Although the structures and the shapes of different types of insulators are greatly different, the insulators are composed of two parts, namely an insulating part and a connecting hardware fitting.

The insulator is a special insulating control and can play an important role in an overhead transmission line. Early-year insulators are mostly used for telegraph poles, and a plurality of disc-shaped insulators are hung at one end of a high-voltage wire connecting tower which is gradually developed, are used for increasing creepage distance and are usually made of glass or ceramics, namely insulators. The insulator should not fail due to various electromechanical stresses caused by changes in environmental and electrical loading conditions, otherwise the insulator will not function significantly and will compromise the service and operational life of the entire line.

The insulator can be divided into a suspension insulator and a post insulator according to different installation modes; according to the difference of the used insulating materials, the insulator can be divided into a porcelain insulator, a glass insulator and a composite insulator (also called a composite insulator); according to different use voltage grades, the insulator can be divided into a low-voltage insulator and a high-voltage insulator; according to different use environmental conditions, deriving a pollution-resistant insulator used in a polluted area; according to different types of the used voltage, deriving a direct current insulator; there are various insulators for special purposes such as insulating cross arms, semi-conductor glaze insulators, tension insulators for power distribution, bobbin insulators, and wiring insulators. In addition, the insulator may be classified into an a-type insulator, i.e., a non-breakdown insulator, and a B-type insulator, i.e., a breakdown insulator, according to the breakdown possibility of the insulator.

The suspension insulator is widely applied to insulation and mechanical fixation of high-voltage overhead transmission lines and flexible buses of power generation and transformation substations. Among suspension insulators, there are disc-shaped suspension insulators and rod-shaped suspension insulators. Disc-shaped suspension insulators are one of the most widely used insulators for power transmission lines. Rod-shaped suspension insulators have been widely used in germany and other countries.

The post insulator is mainly used for insulating and mechanically fixing buses and electrical equipment of a power plant and a substation. In addition, post insulators are often used as components of electrical equipment such as disconnectors and circuit breakers. The post insulator may be classified into a pin post insulator and a rod post insulator. Pin post insulators are used for low-voltage distribution lines and communication lines, and rod post insulators are used for high-voltage substations.

The porcelain insulator is an insulator made of electrical ceramics. The electrical ceramic is made by baking quartz, feldspar and clay as raw materials. The surface of the porcelain piece of the porcelain insulator is usually covered with porcelain glaze to improve the mechanical strength, prevent water infiltration and increase the surface smoothness. Among the various types of insulators, porcelain insulators are most commonly used.

The insulator is contaminated by dust or bird droppings during use to affect the insulating performance, so that the insulator needs to be cleaned. The existing cleaning process is that workers climb the pole and then wash the surface of the insulator with rag or water, so that the safety production is not facilitated, and the temporary outage of an area can be caused.

Disclosure of Invention

The invention aims to provide a composite porcelain insulator which can self-clean and drive birds.

The invention adopts the following technical scheme:

a composite porcelain insulator comprises a first insulator and a second insulator which are coaxial and arranged at intervals; a first connecting rod is fixedly arranged at the upper end of the first insulator, a second connecting rod is arranged at the upper end of the second insulator, and the upper end of the second connecting rod is fixedly connected with the lower end of the first insulator; the first connecting rod is rotatably provided with a cleaning device; the first insulator is the same as the second insulator in structure and comprises a porcelain body, an alumina layer, a metal anti-rust paint layer and a silicone rubber layer, wherein the alumina layer, the metal anti-rust paint layer and the silicone rubber layer are sequentially coated outside the porcelain body.

Furthermore, the first insulator and the second insulator are hemispheroids with cambered surfaces on the upper portion.

Furthermore, the cleaning device comprises a rotary ring and cross rods symmetrically arranged on the rotary ring; the outer end of the cross rod is provided with a fan blade, the lower end of the cross rod is provided with a connecting rod and a hanging rod, the lower end of the connecting rod is provided with a first cleaning plate, the lower end of the hanging rod is provided with a rotating rod parallel to the cross rod, and the rotating rod is provided with a second cleaning plate; the first cleaning plate is matched with the outer surface of the first insulator, and the second cleaning plate is matched with the outer surface of the second insulator.

Further, a fixing ring is arranged on the first connecting rod, ball grooves are formed in the upper surface and the lower surface of the fixing ring, and balls are arranged in the ball grooves; the inboard of gyration ring is provided with the annular with solid fixed ring looks adaptation, both sides all are provided with the sliding tray that corresponds with the ball groove about in the annular.

Further, the diameter of the first insulator is 1.5-2 times of the diameter of the second insulator.

Further, the first cleaning plate and the second cleaning plate have the same structure and respectively comprise an arc-shaped plate and cleaning bristles arranged on the inner side of the arc-shaped plate.

Furthermore, bird repelling thorns are arranged on the outer sides of the arc-shaped plates.

Furthermore, a reinforcing rib rod is arranged between the hanging rod and the rotating rod.

Furthermore, a wind whistle is arranged on the rotating rod.

Further, the cross rod is provided with a bird repelling device.

The invention has the beneficial effects that:

1. the insulator disclosed by the invention adopts a multilayer composite structure, and has the advantages of higher strength, hydrophobicity, electric corrosion resistance, ageing resistance and the like.

2. The insulator is provided with the cleaning device, automatic cleaning is realized by utilizing wind energy, workers are not required to go up the tower for cleaning, the operation and maintenance requirements of the insulator can be met, and meanwhile, the operation risk of the workers is avoided.

3. The aim of repelling birds is achieved by using the bird repelling thorn and the wind whistle, and pollution of dirt such as bird droppings to the surface of the insulator is avoided.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

FIG. 3 is a schematic view of a connection structure of the rotating ring and the fixing ring.

FIG. 4 is a schematic view of the first sweeping board in embodiment 2

Fig. 5 is a schematic cross-sectional view of the first insulator.

Wherein, 1 first insulator, 2 second insulators, 3 head rod, 4 second connecting rods, 5 porcelain matter bodies, 6 aluminium oxide layers, 7 metal anti-rust paint layers, 8 silastic layers, 9 slewing rings, 10 horizontal poles, 11 fan blades, 12 connecting rods, 13 peg, 14 first cleaning plates, 15 rotary rods, 16 second cleaning plates, 17 fixed rings, 18 ball grooves, 19 balls, 20 ring grooves, 21 sliding grooves, 22 arc plates, 23 cleaning bristles, 24 bird-repelling spines, 25 reinforcing rib rods and 26 wind whistle.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. 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, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Example 1

A composite porcelain insulator comprises a first insulator 1 and a second insulator 2 which are coaxial and arranged at intervals; a first connecting rod 3 is fixedly arranged at the upper end of the first insulator 1, a second connecting rod 4 is arranged at the upper end of the second insulator 2, and the upper end of the second connecting rod 4 is fixedly connected with the lower end of the first insulator 1; a cleaning device is rotatably arranged on the first connecting rod 3; the first insulator 1 is the same as the second insulator 2 in structure and comprises a porcelain body 5, an alumina layer 6, a metal anti-rust paint layer 7 and a silicone rubber layer 8, wherein the alumina layer 6, the metal anti-rust paint layer 7 and the silicone rubber layer 8 are sequentially coated outside the porcelain body 5. The first insulator and the second insulator are sequentially arranged, and insulator strings can be manufactured as required. The cleaning device can clean the upper surface of the insulator and ensure that the exterior of the insulator is clean. The insulator body adopts composite construction, and the porcelain matter body has good insulating properties, and the hardness can be improved to outside aluminium oxide layer, protects the porcelain matter body. The metal antirust paint layer can protect the first connecting rod or the second connecting rod in the porcelain body from being corroded, and the outermost silicone rubber layer has the effects of hydrophobicity, electric corrosion resistance, ageing resistance and the like, protects the surface of the insulator and is not easily polluted by dirt.

The first insulator 1 and the second insulator 2 are hemispheroids with cambered surfaces on the upper part. The structure of the semi-sphere is adopted, the upper surface of the semi-sphere is arc-shaped, rainwater can slide downwards along the arc surface under the precipitation condition, and water is not accumulated easily.

The cleaning device comprises a rotary ring 9 and cross rods 10 symmetrically arranged on the rotary ring 9; the outer end of the cross rod 10 is provided with a fan blade 11, the lower end of the cross rod 20 is provided with a connecting rod 12 and a hanging rod 13, the lower end of the connecting rod 12 is provided with a first cleaning plate 14, the lower end of the hanging rod 13 is provided with a rotating rod 15 parallel to the cross rod 10, and the rotating rod 15 is provided with a second cleaning plate 16; the first sweeping board 14 is matched with the outer surface of the first insulator 1, and the second sweeping board 16 is matched with the outer surface of the second insulator 2. The cleaning device provides power through wind power, when wind blows over the fan blades, the fan blades drive the cross rods to rotate along the axis of the insulators, the cross rods drive the hanging rods and the connecting rods to rotate around the axis together, and then the cleaning plates are driven to remove dust on the surfaces of the insulators.

A fixing ring 17 is arranged on the first connecting rod 3, ball grooves 18 are formed in the upper surface and the lower surface of the fixing ring 17, and balls 19 are arranged in the ball grooves 18; the inner side of the revolving ring 9 is provided with a ring groove 20 matched with the fixing ring 17, and the upper side and the lower side in the ring groove 20 are both provided with sliding grooves 21 corresponding to the ball grooves 18. The fixed ring is rotationally connected with the rotary ring, and the fixed ring and the rotary ring reduce the rotational resistance through the balls, so that the fan blade can drive the whole cleaning device to rotate.

The diameter of the first insulator 1 is 1.5-2 times of the diameter of the second insulator 2. Two big one little insulators are arranged in proper order, and the great insulator of size can block partly filth and fall into the surface of the little insulator of below, reduces operation intensity. The first cleaning board 14 and the second cleaning board 16 have the same structure, and each include an arc board 22 and cleaning bristles 23 arranged inside the arc board 22. The cleaning plate is matched with the outer size of the insulator, and when the fan blade drives the whole device to rotate, the cleaning plate rotates around the center of the insulator, so that dust on the surface of the insulator is wiped completely. The cleaning work can be carried out only under windy conditions, so that the insulator does not need to be maintained by finding workers additionally. A reinforcing rib 25 is arranged between the hanging rod 13 and the rotating rod 15. The connection strength of the hanging rod and the rotary rod is further improved by the reinforcing rib rods, and the service life is prolonged.

A whistle 26 is provided on the rotating rod 15. When the rotating rod rotates, the air in the whistle is driven to flow, and the whistle makes a sound, so that the aim of repelling birds is fulfilled.

Example 2

The difference is that the outside of the arc-shaped plate 22 is provided with bird repelling pricks 24, as in example 1. The cross bar 10 is provided with bird repelling thorns 24. Bird thorn is the thorn that has the tip, and birds can't stand on horizontal pole and arc, avoids pollutants such as bird droppings to fall on insulator surface.

Claims

1. A composite porcelain insulator is characterized by comprising a first insulator (1) and a second insulator (2) which are coaxial and arranged at intervals; a first connecting rod (3) is fixedly arranged at the upper end of the first insulator (1), a second connecting rod (4) is arranged at the upper end of the second insulator (2), and the upper end of the second connecting rod (4) is fixedly connected with the lower end of the first insulator (1); a cleaning device is rotatably arranged on the first connecting rod (3); the first insulator (1) is the same as the second insulator (2) in structure and comprises a porcelain body (5), an alumina layer (6) sequentially coated outside the porcelain body (5), a metal antirust paint layer (7) and a silicone rubber layer (8).

2. The composite porcelain insulator according to claim 1, wherein the first insulator (1) and the second insulator (2) are hemispheroids with cambered surfaces.

3. The composite porcelain insulator according to claim 2, wherein the sweeping means comprises a swivel ring (9), cross bars (10) symmetrically disposed on the swivel ring (9); the fan blades (11) are arranged at the outer end of the cross rod (10), the connecting rod (12) and the hanging rod (13) are arranged at the lower end of the cross rod (20), the first cleaning plate (14) is arranged at the lower end of the connecting rod (12), the rotating rod (15) parallel to the cross rod (10) is arranged at the lower end of the hanging rod (13), and the second cleaning plate (16) is arranged on the rotating rod (15); the first cleaning plate (14) is matched with the outer surface of the first insulator (1), and the second cleaning plate (16) is matched with the outer surface of the second insulator (2).

4. The composite porcelain insulator according to claim 3, wherein the first connecting rod (3) is provided with a fixing ring (17), the upper and lower surfaces of the fixing ring (17) are provided with ball grooves (18), and balls (19) are arranged in the ball grooves (18); the inboard of gyration ring (9) is provided with annular (20) with solid fixed ring (17) looks adaptation, both sides about in annular (20) all are provided with sliding tray (21) that correspond with ball groove (18).

5. The composite porcelain insulator according to claim 4, wherein the diameter of the first insulator (1) is 1.5-2 times the diameter of the second insulator (2).

6. The composite porcelain insulator according to claim 5, wherein the first sweeping plate (14) and the second sweeping plate (16) are identical in structure and each comprise an arc-shaped plate (22) and sweeping bristles (23) arranged on the inner side of the arc-shaped plate (22).

7. The composite porcelain insulator according to claim 6, wherein bird repelling barbs (24) are arranged on the outer side of the arc-shaped plate (22).

8. The composite porcelain insulator according to claim 7, wherein a reinforcing rib (25) is provided between the hanging rod (13) and the rotating rod (15).

9. The composite porcelain insulator according to claim 8, wherein a whistle (26) is provided on the rotary rod (15).

10. The composite porcelain insulator of claim 9 wherein said rail (10) is provided with bird repelling spines (24).