CN214123607U

CN214123607U - Dry-type high-voltage bushing's insulating device

Info

Publication number: CN214123607U
Application number: CN202023294356.0U
Authority: CN
Inventors: 梁永伟; 李五运
Original assignee: Shijiazhuang Fa Yun Electric Co ltd
Current assignee: Shijiazhuang Fa Yun Electric Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-03
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a dry-type high-voltage bushing's insulating device, including the high-voltage bushing body, high-voltage bushing body top fixedly connected with connecting block, connecting block top fixed mounting has the nut, the middle part of nut alternates and is equipped with the screw, screw bottom fixedly connected with insulating cylinder, the insulating cylinder bottom is provided with the conducting rod, the fixed retainer plate that is provided with between conducting rod and the insulating cylinder, conducting rod one side is provided with the installation cavity, installation cavity bottom is provided with insulating seal ring, insulating seal ring bottom fixed mounting has the card strip, card strip bottom one side is fixed and is provided with the elasticity chamber. This kind of dry-type high-tension bushing's insulating device has effectively solved because the electric field in the cover distributes inhomogeneously, produces partial discharge phenomenon easily and the sleeve pipe leakproofness is not enough in addition, and insulating nature is poor, appears electric leakage phenomenon easily, endangers the personal safety's of staff around the high-tension bushing problem, has higher practical value.

Description

Dry-type high-voltage bushing's insulating device

Technical Field

The utility model relates to a dry-type high-voltage bushing technical field specifically is a dry-type high-voltage bushing's insulating device.

Background

High voltage bushings, which are devices for insulating and supporting one or more conductors passing through a partition such as a wall or a box, are important devices in electrical power systems. During the manufacturing, transporting and overhauling processes of the high-voltage bushing, latent defects may remain due to various reasons; during long-term operation, defects are also gradually generated under the influence of the action of electric fields and conductor heating, mechanical damage and chemical corrosion, and atmospheric conditions.

The high-voltage bushing is mainly used for the ground insulation of the inlet and outlet wires of power equipment such as a transformer, an electric reactor and a circuit breaker and the high-voltage circuit passing through a wall body. The high-voltage bushing comprises a single dielectric bushing, a composite dielectric bushing and a capacitive bushing. The main insulation of the condenser bushing is composed of a coaxial cylindrical series capacitor group formed by winding a layered insulating material and a foil-shaped metal electrode on a conductive rod. The insulation material is divided into gummed paper and oiled paper condenser bushings.

The prior art scheme has the following defects: 1. the electric field in the sleeve is not uniformly distributed, and particularly, the electric field of the core body of the middle sleeve is very concentrated, so that partial discharge is easily generated; 2. the sleeve pipe leakproofness is not enough, and insulating nature is poor, appears the electric leakage phenomenon easily, endangers the personal safety's of staff around the high-voltage bushing problem. We have therefore developed an insulation arrangement for a dry high voltage bushing.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a dry-type high-voltage bushing's insulating device, including the high-voltage bushing body, its characterized in that, high-voltage bushing body top fixedly connected with connecting block, connecting block top fixed mounting has the nut, the middle part of nut alternates and is equipped with the screw, screw bottom fixedly connected with insulating cylinder, the insulating cylinder bottom is provided with the conducting rod, the fixed retainer plate that is provided with between conducting rod and the insulating cylinder, conducting rod one side is provided with the installation cavity, installation cavity bottom is provided with insulating seal ring, insulating seal ring bottom fixed mounting has the card strip, the fixed elasticity chamber that is provided with in card strip bottom one side, elasticity chamber bottom one side fixed mounting has the sleeve pipe core, sleeve pipe core bottom mounting is provided with metal shim, the sleeve pipe core is provided with a plurality ofly.

As a preferred technical scheme of the utility model, screw through connection piece top is connected to the insulating cylinder, the screw all is provided with helicitic texture with connecting block contact site and nut one side.

As an optimal technical scheme of the utility model, high-tension bushing body middle part interlude is equipped with the silicon rubber full skirt, the silicon rubber full skirt is annular full skirt, the silicon rubber full skirt is provided with a plurality ofly.

As a preferred technical scheme of the utility model, high-tension bushing body bottom alternates and is equipped with the flange, the inside central point of flange puts and is provided with sealed cushion, flange and sealed cushion pass through stud fixed connection.

As an optimal technical scheme of the utility model, sleeve pipe core both sides are provided with insulating medium layer, insulating medium layer one side fixed mounting has hollow composite insulator, be provided with the capacitanc insulating layer between insulating medium layer and the hollow composite insulator.

As an optimal technical scheme of the utility model, high-tension bushing body bottom fixed mounting has the base, the base surface is provided with the installing port, base fixed surface spraying has the semiconductor lacquer.

As an optimal technical scheme of the utility model, sleeve pipe core and metal gasket are coaxial cylindrical, high tension bushing body and connecting block surface spraying have the insulating material lacquer.

The utility model has the advantages that:

1. according to the insulating device of the dry-type high-voltage bushing, the metal gasket is fixedly arranged at the bottom end of the bushing core body, when the bushing core body generates partial discharge, the metal gasket can stabilize the electricity emitted by the device in the high-voltage bushing body, and the phenomenon of electric leakage of the device is prevented;

2. according to the insulating device of the dry-type high-voltage bushing, the insulating medium layer and the hollow composite insulator are arranged inside the high-voltage bushing body, the sealing rubber gasket is arranged in the center of the inside of the flange, so that the insulating property and the sealing property of the device can be improved, and the danger generated around the device due to the electric leakage phenomenon outside the high-voltage bushing is avoided;

3. this kind of dry-type high-voltage bushing's insulating device, high-voltage bushing body middle part interlude are equipped with the silicon rubber full skirt, through setting up the silicon rubber full skirt, can prevent the outside deposition of high-voltage bushing, appear static phenomenon.

Drawings

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

fig. 1 is a perspective view of an insulating device of a dry high-voltage bushing according to the present invention;

fig. 2 is a cross-sectional view of an insulating device of a dry high-voltage bushing according to the present invention;

fig. 3 is an enlarged view of a position a of the insulation device of the dry high-voltage bushing of the present invention.

In the figure: 1. a high voltage bushing body; 2. connecting blocks; 3. a nut; 4. a screw; 5. a silicon rubber umbrella skirt; 6. a flange; 7. sealing the rubber gasket; 8. a base; 9. an insulating cylinder; 10. a conductive rod; 11. a hollow composite insulator; 12. an insulating dielectric layer; 13. a bushing core; 14. a metal gasket; 15. installing a cavity; 16. clamping the strip; 17. an insulating gasket; 18. an elastic cavity; 19. and (7) installing the opening.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-3, the utility model relates to a dry-type high-voltage bushing's insulating device, including high-

voltage bushing body

1, 1 top fixedly connected with connecting block 2 of high-voltage bushing body, 2 top fixed mounting of connecting block have nut 3, the middle part interlude of nut 3 is equipped with

screw

4, 4 bottom fixedly connected with insulating cylinder 9 of screw, insulating cylinder 9 bottom is provided with conducting rod 10, the fixed retainer plate that is provided with between conducting rod 10 and the insulating cylinder 9, conducting rod 10 one side is provided with installation cavity 15, installation cavity 15 bottom is provided with insulating seal ring 17, insulating seal ring 17 bottom fixed mounting has card strip 16, card strip 16 bottom one side is fixed and is provided with

elastic cavity

18, 18 bottom one side fixed mounting in elastic cavity has

sleeve core

13, 13 bottom mounting of sleeve core is provided with metal gasket 14, sleeve core 13 is provided with a plurality ofly.

Wherein, 2 tops of screw 4 through connection piece are connected to insulating cylinder 9, and screw 4 all is provided with helicitic texture with 2 contact site of connecting block and 3 one sides of nut, is provided with helicitic texture through screw and connecting block contact site, opens connecting block 2 when making things convenient for the staff to overhaul high-tension bushing, detects high-tension bushing's inner structure.

Wherein, 1 middle part interlude of high-voltage bushing body is equipped with silicon rubber full skirt 5, and silicon rubber full skirt 5 is annular full skirt, and silicon rubber full skirt 5 is provided with a plurality ofly, through setting up the silicon rubber full skirt, can prevent the outside deposition of high-voltage bushing, the static phenomenon appears.

Wherein, 1 bottom of high-voltage bushing body alternates and is equipped with

flange

6, and 6 inside central points of flange put and are provided with sealed cushion 7, and flange 6 and sealed cushion 7 pass through stud fixed connection, can effectively improve flange fixed mounting's seal.

The insulating medium layers 12 are arranged on two sides of the bushing core body 13, the hollow composite insulator 11 is fixedly mounted on one side of each insulating medium layer 12, the capacitive insulating layer is arranged between each insulating medium layer 12 and each hollow composite insulator 11, the insulating property of the device can be improved by arranging the insulating medium layers and the hollow composite insulators, and the danger around the device caused by the discharge phenomenon possibly occurring in the high-voltage bushing is effectively prevented.

Wherein, 1 bottom fixed mounting of high-tension bushing body has base 8, and base 8 surface is provided with installing port 19, and base 8 fixed surface is sprayed with semiconductor lacquer, increases the insulating nature of device.

Wherein, sleeve pipe core 13 and metal gasket 14 are coaxial cylindrical, and high-voltage bushing body 1 and connecting block 2 surface spraying have insulating material lacquer, increase the insulating nature of device, prevent to appear electric leakage phenomenon around the device.

The working principle is as follows: when the high-voltage bushing testing device works, the conducting rod 10 is fixedly arranged inside the high-voltage bushing body 1, the insulating sealing washer 17 is placed at the clamping strip 16, the insulating cylinder 9 and the conducting rod 10 are clamped and fastened through the threaded structure, the connecting block 2 is fixed through the nut 3, the mounting port 19 in the base 8 is fixedly connected with the transformer, the threaded structure is arranged at the contact part of the screw 4 and the connecting block 2, the connecting block 2 is conveniently opened when a worker overhauls the high-voltage bushing, and the internal structure of the high-voltage bushing is detected; the silicone rubber umbrella skirt 5 is inserted in the middle of the high-voltage bushing body 1, so that dust accumulation outside the high-voltage bushing and static electricity can be prevented; the insulating property of the device can be improved by arranging the insulating medium layer 12 and the hollow composite insulator 11, and the potential discharge phenomenon in the high-voltage bushing is effectively prevented, so that the danger is caused around the device; the metal gasket 14 is fixedly arranged at the bottom end of the bushing core body 13, and when the bushing core body 13 generates partial discharge, the metal gasket 14 can stabilize the discharged electricity in the high-voltage bushing body 1, so that the electric leakage phenomenon of the device is prevented; the flange 6 and the sealing rubber gasket 7 are fixedly connected through the stud bolts, so that the tightness of the flange fixed installation can be effectively improved; insulating material paint is sprayed on the surfaces of the high-voltage bushing body 1 and the connecting block 2, so that the insulativity of the device is increased, and the phenomenon of electric leakage danger around the device is prevented; the utility model discloses can effectively solve sheathed tube electric field because the distribution is inhomogeneous, the electric field concentrates and leads to producing partial discharge phenomenon easily and sleeve pipe leakproofness is not enough in addition, and insulating nature is poor, appears electric leakage phenomenon easily, endangers the personal safety's of staff problem around the high-tension bushing problem, has higher practical value.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An insulating device of a dry-type high-voltage bushing comprises a high-voltage bushing body (1) and is characterized in that a connecting block (2) is fixedly connected to the top end of the high-voltage bushing body (1), a nut (3) is fixedly mounted to the top end of the connecting block (2), a screw (4) is inserted into the middle of the nut (3), an insulating cylinder (9) is fixedly connected to the bottom end of the screw (4), a conducting rod (10) is arranged at the bottom end of the insulating cylinder (9), a fixing ring is fixedly arranged between the conducting rod (10) and the insulating cylinder (9), an installation cavity (15) is arranged on one side of the conducting rod (10), an insulating sealing gasket (17) is arranged at the bottom of the installation cavity (15), a clamping strip (16) is fixedly mounted at the bottom end of the insulating sealing gasket (17), and an elastic cavity (18) is fixedly arranged on one side of the bottom of the clamping strip (16), the elastic sleeve is characterized in that a sleeve core body (13) is fixedly mounted on one side of the bottom of the elastic cavity (18), a metal gasket (14) is fixedly arranged at the bottom end of the sleeve core body (13), and the sleeve core body (13) is provided with a plurality of parts.

2. An insulation device of a dry-type high voltage bushing according to claim 1, wherein the screw (4) penetrates the top end of the connection block (2) and is connected to the insulation cylinder (9), and the screw (4) and connection block (2) contact portion and the nut (3) side are provided with a thread structure.

3. An insulating device of a dry-type high voltage bushing as claimed in claim 1, wherein said high voltage bushing body (1) has a silicone rubber shed (5) inserted in the middle thereof, said silicone rubber shed (5) is an annular shed, and said silicone rubber shed (5) is provided in a plurality of numbers.

4. The insulation device of a dry-type high voltage bushing according to claim 1, wherein a flange (6) is inserted into the bottom of the high voltage bushing body (1), a sealing rubber gasket (7) is disposed at a central position inside the flange (6), and the flange (6) and the sealing rubber gasket (7) are fixedly connected by a stud bolt.

5. An insulation device of a dry-type high voltage bushing according to claim 1, wherein two sides of the bushing core (13) are provided with insulating medium layers (12), one side of the insulating medium layers (12) is fixedly provided with a hollow composite insulator (11), and a capacitive insulation layer is arranged between the insulating medium layers (12) and the hollow composite insulator (11).

6. The insulation device of a dry-type high voltage bushing as claimed in claim 1, wherein a base (8) is fixedly installed at the bottom of the high voltage bushing body (1), the surface of the base (8) is provided with a mounting opening (19), and the surface of the base (8) is fixedly sprayed with semi-conductive paint.

7. The insulation arrangement of a dry-type high voltage bushing according to claim 1, wherein the bushing core (13) and the metal gasket (14) are coaxial and cylindrical, and the surfaces of the high voltage bushing body (1) and the connection block (2) are coated with insulating material paint.