CN215118758U

CN215118758U - Novel vacuum direct current breaker

Info

Publication number: CN215118758U
Application number: CN202121049824.XU
Authority: CN
Inventors: 黄冬华
Original assignee: ANHUI HUIKAI ELECTRIC CO LTD
Current assignee: ANHUI HUIKAI ELECTRIC CO LTD
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-10
Anticipated expiration: 2031-05-17

Abstract

The utility model belongs to the technical field of electrical apparatus, a novel vacuum direct current breaker is provided. The utility model discloses a: an insulating shell, a fixed electrode, a movable electrode and a vacuum part; the insulating shell is provided with an upper mounting hole, a lower mounting hole and an air hole; wherein the hole center of the upper mounting hole is concentric with the hole center of the lower mounting hole; the fixed electrode is fixedly arranged in the upper mounting hole, and the movable electrode is fixedly arranged in the lower mounting hole; the vacuum part is communicated with the insulating shell through an air hole; the vacuum portion can evacuate gas in the insulating housing. The device improves the overall safety by a vacuum mode, adopts protective gas to isolate oxygen, avoids combustion and further improves the safety performance; the main components are arranged inside, so that the discharge condition generated in daily operation occurs inside but cannot be discharged outside. The device, overall design is reasonable, easy operation, is applicable to the trade and promotes.

Description

Novel vacuum direct current breaker

Technical Field

The utility model relates to the technical field of electrical apparatus, concretely relates to novel vacuum direct current breaker.

Background

As examples of the circuit breaker and the switch, a circuit breaker having a capability of blocking a fault current including a load current and a switch for opening or closing the load current have been widely used. Among the circuit breakers, a vacuum circuit breaker has a small size, high reliability, excellent multi-frequency switching characteristics, and easy maintenance, and thus a vacuum circuit breaker having a high voltage and a high capacity and a vacuum circuit breaker having a medium voltage and a low capacity have been widely used.

Meanwhile, the vacuum interrupter serves as an interrupter of the vacuum circuit breaker, and is mounted inside the housing assembly body and senses a current or voltage generated on a high voltage line of the high voltage circuit through the rectifier. During the reciprocating switching process, discharge between electrodes is easily caused, and further accidents are caused.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a novel vacuum direct current breaker to improve the device's security.

The utility model provides a pair of novel vacuum direct current breaker, include: an insulating shell, a fixed electrode, a movable electrode and a vacuum part; the insulating shell is provided with an upper mounting hole, a lower mounting hole and an air hole; the upper mounting hole penetrates through the upper surface of the insulating shell, and the lower mounting hole penetrates through the lower surface of the insulating shell; wherein the hole center of the upper mounting hole is concentric with the hole center of the lower mounting hole; the fixed electrode is fixedly arranged in the upper mounting hole and extends into the insulating shell along the upper part of the upper mounting hole; the movable electrode is fixedly arranged in the lower mounting hole and extends into the insulating shell along the lower part of the lower mounting hole; the vacuum part is communicated with the insulating shell through an air hole; the vacuum portion is capable of evacuating gas within the insulating housing.

Further, the movable electrode comprises a fixed shell, a movable threaded rod and a conductive electrode; the conductive electrode is fixedly installed on the movable threaded rod, the fixed shell is provided with an internal threaded hole, and the movable threaded rod is in threaded connection with the internal threaded hole. In practical application, the conductive electrode moves up and down in the insulating shell by rotating the movable threaded rod; the movable electrode and the fixed electrode are conducted and disconnected, the mode is simple, and the operation is easy.

Further, the fixed electrode comprises a shell and a fixed electric pole; the shell is sealed to be installed go up in the mounting hole, fixed pole runs through to be installed about the shell, and the one end of fixed pole in the insulating casing is close to the conducting electrode direction. In the practical application, this mode is convenient electrically conductive, and the sealed mounting mode of shell has guaranteed to avoid in the insulating housing to leak gas and takes place.

Further, the device also comprises a protective gas part, wherein the protective gas part comprises a gas ring sleeve and gas; the gas ring sleeve is fixedly arranged in the insulating shell, and the extension parts of the fixed electrode and the movable electrode in the insulating shell are covered in the gas ring sleeve; the protective gas is filled into the gas ring sleeve under the sealing pressure. In practical application, the protective gas part protects internal components, and the adopted protective gas is nitrogen; the adopted sealing pressure is charged, so that the protection gas can flow out quickly after the part is subjected to electric shock, a protection gas layer for isolating oxygen is formed, and combustion caused after the electric shock is prevented from being generated.

Furthermore, the gas ring sleeve comprises an electric penetration layer, and the thickness of the electric penetration layer is consistent with that of the insulating shell. In practical application, the thickness of the material used by the electric penetration layer is consistent with that of the insulating shell; therefore, the electric penetrating layer can be broken down only under the condition that overload voltage occurs; so that the overall service life of the device is improved.

According to the above technical scheme, the utility model provides a pair of novel vacuum direct current breaker's beneficial effect:

(1) in practical application, the adopted insulating shell is mainly used for mounting components, so that the overall electricity resistance is improved, and meanwhile, the insulating shell is made of a rubber and carbon fiber polymer;

(2) and the fixed electrode and the movable electrode are arranged in the insulating shell, so that the safety of the device in the operation process is realized, and the electricity-proof phenomenon caused by the contact of the electrodes in the operation process is prevented from occurring outdoors.

(3) Meanwhile, the vacuum part is communicated with the air hole, so that the vacuum part evacuates the gas in the insulating shell, the gas in the shell is reduced, and the internal mechanism is protected.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings that are needed to describe the embodiments or the prior art will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

Fig. 1 is a front view of a novel vacuum dc circuit breaker according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

reference numerals:

the device comprises an insulating shell 1, an upper mounting hole 11, a lower mounting hole 12, an air hole 13, a fixed electrode 2, an outer shell 21, a fixed electric pole 22, a movable electrode 3, a fixed shell 31, an internal thread hole 311, a movable threaded rod 32, a conductive electrode 33, a vacuum part 4, a protective gas part 5, a gas ring sleeve 51, an electric penetration layer 511 and gas 100.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

The embodiment is basically as shown in the attached figures 1 to 2:

example 1:

as shown in fig. 1-2, the present embodiment provides a novel vacuum dc circuit breaker to improve the safety of the device. It includes: an insulating shell 1, a fixed electrode 2, a movable electrode 3 and a vacuum part 4; the insulation shell 1 is provided with an upper mounting hole 11, a lower mounting hole 12 and an air hole 13; the upper mounting hole 11 penetrates through the upper surface of the insulating shell 1, and the lower mounting hole 12 penetrates through the lower surface of the insulating shell 1; wherein the center of the upper mounting hole 11 is concentric with the center of the lower mounting hole 12; the fixed electrode 2 is fixedly arranged in the upper mounting hole 11 and extends into the insulating shell 1 along the upper part of the upper mounting hole 11; the movable electrode 3 is fixedly arranged in the lower mounting hole 12 and extends into the insulating shell 1 along the lower part of the lower mounting hole 12; the vacuum part 4 is communicated with the insulating shell 1 through an air hole 13; the vacuum portion 4 can evacuate the gas 100 in the insulating housing 1. In practical application, the adopted insulating shell 1 mainly installs components, so that the overall electricity resistance is improved, and meanwhile, the insulating shell 1 is made of a polymer of rubber and carbon fiber; and the fixed electrode 2 and the movable electrode 3 are arranged in the insulating shell 1, thereby realizing the safety of the device in the operation process and preventing the electricity-proof phenomenon caused by the contact of the electrodes in the operation process from occurring outdoors. Meanwhile, the vacuum part 4 is communicated with the air hole 13, so that the vacuum part 4 evacuates the gas 100 in the insulating shell 1, the gas 100 in the shell is reduced, and the internal mechanism is protected.

In the present embodiment, the moving electrode 3 includes a fixed case 31, a moving threaded rod 32, and a conductive electrode 33; the conductive electrode 33 is fixedly installed on the movable threaded rod 32, the fixed shell 31 has an internal threaded hole 311, and the movable threaded rod 32 is in threaded connection with the internal threaded hole 311. In practical application, the conductive electrode 33 moves up and down in the insulating shell 1 by rotating the movable threaded rod 32; the conduction and the disconnection of the movable electrode 3 and the fixed electrode 2 are realized, the mode is simple, and the operation is easy.

In the present embodiment, the fixed electrode 2 includes a housing 21 and a fixed electric pole 22; the shell 21 is installed in a sealing mode in the upper installation hole 11, the fixed electric pole 22 penetrates through the shell 21 to be installed on the upper portion and the lower portion, and one end of the fixed electric pole 22 in the insulating shell 1 is close to the direction of the conducting electrode 33. In practical application, the mode is convenient to conduct electricity, and the sealed installation mode of the shell 21 ensures that air leakage is avoided in the insulating shell 1.

In this embodiment, the apparatus further comprises a shielding gas part 5, wherein the shielding gas part 5 comprises a gas loop 51 and a gas 100; the gas loop 51 is fixedly arranged in the insulating shell 1, and the extension parts of the fixed electrode 2 and the movable electrode 3 in the insulating shell 1 are covered in the gas loop 51; the shielding gas 100 is introduced into the gas ring 51 under a sealing pressure. In practical use, the protective gas part 5 protects the internal components, and the adopted protective gas 100 is nitrogen; the adopted sealing pressure is filled, so that the protection gas 100 can flow out quickly after the part is subjected to electric shock, a 100-layer protection gas for isolating oxygen is formed, and combustion caused after the electric shock is prevented, so that the safety is greatly improved, and the combustion accidents are reduced.

In this embodiment, the gas ring 51 includes an electrical penetration layer 511, and the thickness of the electrical penetration layer 511 is consistent with that of the insulating housing 1. In practical application, the thickness of the material used for the electrical penetration layer 511 is consistent with that of the insulating housing 1; this allows the breakdown of the electrical through layer 511 to occur only in the event of an overload voltage; so that the overall service life of the device is improved.

In conclusion, the novel vacuum direct current circuit breaker can improve the overall safety of the device and reduce the occurrence of accidents in a vacuum mode; meanwhile, the adopted protective gas isolates oxygen, so that combustion is avoided, the safety performance is improved, and flame is prevented; and the main parts are arranged inside, so that the discharge condition generated in daily operation is generated inside but can not be discharged outside. The device, overall design is reasonable easy operation, is applicable to the trade and promotes.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A novel vacuum direct current circuit breaker, characterized by comprising: an insulating shell, a fixed electrode, a movable electrode and a vacuum part;

the insulating shell is provided with an upper mounting hole, a lower mounting hole and an air hole; the upper mounting hole penetrates through the upper surface of the insulating shell, and the lower mounting hole penetrates through the lower surface of the insulating shell; wherein the hole center of the upper mounting hole is concentric with the hole center of the lower mounting hole;

the fixed electrode is fixedly arranged in the upper mounting hole and extends into the insulating shell along the upper part of the upper mounting hole; the movable electrode is fixedly arranged in the lower mounting hole and extends into the insulating shell along the lower part of the lower mounting hole;

the vacuum part is communicated with the insulating shell through an air hole; the vacuum portion is capable of evacuating gas within the insulating housing.

2. The novel vacuum direct current circuit breaker according to claim 1, characterized in that the moving electrode comprises a fixed shell, a moving threaded rod and a conductive electrode; the conductive electrode is fixedly installed on the movable threaded rod, the fixed shell is provided with an internal threaded hole, and the movable threaded rod is in threaded connection with the internal threaded hole.

3. The novel vacuum direct current circuit breaker according to claim 2, characterized in that the fixed electrode comprises a housing and a fixed electric pole; the shell is sealed to be installed go up in the mounting hole, fixed pole runs through to be installed about the shell, and the one end of fixed pole in the insulating casing is close to the conducting electrode direction.

4. The novel vacuum direct current circuit breaker according to claim 3, further comprising a shielding gas part, wherein the shielding gas part comprises a gas ring sleeve and a gas; the gas ring sleeve is fixedly arranged in the insulating shell, and the extension parts of the fixed electrode and the movable electrode in the insulating shell are covered in the gas ring sleeve; and filling gas into the gas ring sleeve according to the sealing pressure.

5. The novel vacuum direct current circuit breaker according to claim 4, characterized in that the gas ring sleeve comprises an electrical penetration layer, and the thickness of the electrical penetration layer is consistent with the thickness of the material of the insulating shell.