CN209169038U - The gentle body insulated metal closed switch equipment of arc extinguishing chamber component - Google Patents

Abstract

The utility model provides a kind of arc extinguishing chamber component, it include: current transformer, bus isolating switch and arc-chutes, the first end of arc-chutes is fixed on current transformer, and the second end of arc-chutes is fixed on bus isolating switch, a spout is provided between the first end and second end of arc-chutes, spout coats a pair of of the moving contact and static contact relative to each other in the first end and second end of arc-chutes.In addition, the utility model additionally provides a kind of Cubicle Gas-Insulated Switchgear using above-mentioned arc extinguishing chamber component.The utility model is ingenious to reduce the quantity of required insulating part using insulating basin on outgoing line side current transformer and bus isolating switch as fixed point, is easily assembled and cost is lower.

Description

Arc chute assemblies and gas-insulated metal-enclosed switchgear

technical field

The utility model relates to the field of electrical control, in particular to an arc extinguishing chamber assembly and a gas-insulated metal-enclosed switchgear.

Background technique

In the field of electrical control, such as gas-insulated metal-enclosed switchgear (GIS), it is necessary to reasonably arrange the circuit breakers, arc extinguishing chambers, current transformers, isolating switches and other components therein. The arc interrupter in a conventional structure needs to adopt a more complicated structure. Alternatively, in another conventional structure shown in FIG. 1 , the bus disconnector 3 and the current transformer 5 are respectively arranged on both sides of the arc extinguishing chamber, and the upper end 2 of the arc extinguishing chamber is fixed to the circuit breaker housing 6 through the first insulator 1 and the second insulator 7 fixes the lower end 4 of the arc extinguishing chamber. This structure requires a larger number of insulators, resulting in higher cost.

Utility model content

Aiming at the above problems, the utility model changes the fixing structure of the arc extinguishing chamber, and fixes the static and dynamic ends of the arc extinguishing chamber on the current transformer and the insulating basin of the bus disconnector respectively. The utility model cleverly utilizes the current transformer on the outgoing line and the insulating basin on the busbar isolation switch as fixed points, thereby reducing the number of required insulating parts and reducing the probability of discharge accidents. In addition, compared with the prior art, the arc extinguishing chamber assembly of the present invention is easier to assemble and has a lower cost.

According to one aspect of the present invention, an arc extinguishing chamber assembly is provided, comprising: a current transformer, a busbar isolation switch, and an arc extinguishing chamber, wherein the first end of the arc extinguishing chamber is fixed on the current transformer, and The second end of the arc-extinguishing chamber is fixed on the busbar isolation switch, a nozzle is arranged between the first end and the second end of the arc-extinguishing chamber, and the nozzle covers the first end of the arc-extinguishing chamber A pair of movable contacts and stationary contacts opposite to each other on the end and the second end.

According to an embodiment of the present invention, in the above-mentioned arc-extinguishing chamber assembly, the first end of the arc-extinguishing chamber is one of the moving end and the static end, and the second end of the arc-extinguishing chamber is the moving end and the static end. The other in the static end.

According to an embodiment of the present invention, in the above-mentioned arc-extinguishing chamber assembly, the first end of the arc-extinguishing chamber is fixed to the current via a first conductor connected between the first end and the current transformer on the transformer.

According to an embodiment of the present invention, in the above-mentioned arc-extinguishing chamber assembly, the second end of the arc-extinguishing chamber is fixed to the busbar via a second conductor connected between the second end and the busbar disconnector on an isolating switch, wherein the first conductor is parallel to the second conductor. Using the first conductor and the second conductor parallel to each other to form the lateral support of the arc extinguishing chamber, instead of the vertical support formed with the circuit breaker housing used in the prior art, can further optimize the space.

According to an embodiment of the present invention, in the above-mentioned arc extinguishing chamber assembly, the second conductor is fixed on one side of the insulating basin of the busbar disconnector.

According to an embodiment of the present invention, in the above-mentioned arc-extinguishing chamber assembly, the length direction of the arc-extinguishing chamber is perpendicular to the length directions of the first conductor and the second conductor.

According to an embodiment of the present invention, in the above-mentioned arc extinguishing chamber assembly, the nozzle is cylindrical with a consistent outer diameter, and the inner wall of the nozzle is located between the movable contact and the static contact There is an inwardly protruding convex part at the part of the nozzle to enhance the overall strength of the spout and improve its guiding effect on the moving contact and the static contact.

According to another aspect of the present invention, there is also provided a gas-insulated metal-enclosed switchgear comprising an arc chute assembly as discussed above.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Description of drawings

The accompanying drawings are included to provide a further understanding of the present invention and are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and together with the description, serve to explain the principles of the present invention. In the attached picture:

FIG. 1 shows a schematic diagram of a structure of the prior art

FIG. 2 shows a schematic structural diagram of an embodiment of an arc extinguishing chamber assembly according to the present invention.

FIG. 3 shows a partial enlarged schematic view of the nozzle portion in the arc extinguishing chamber assembly shown in FIG. 2 .

Description of reference numbers:

1 First insulator

2 Upper end of arc chute

3 Busbar disconnector

4 Lower end of arc chute

5 Current transformer

6 Circuit breaker housing

7 Second insulator

11 Current transformer

12 Bus disconnect switch

13 First end of arc chute

14 Second end of arc chute

15 First conductor

16 Second conductor

17 Insulated Basin

18 spout

19 Moving contacts

20 static contacts

21 convex

Detailed ways

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. In addition, although the terms used in the present invention are selected from well-known and common terms, some terms mentioned in the specification of the present invention may be chosen by the applicant according to his or her judgment, and their detailed meanings Described in the relevant part of the description herein. Furthermore, it is required that the present invention be understood not only by the actual terms used, but also by the meanings implied by each term.

The basic principles and preferred embodiments of the present invention are discussed in greater detail with reference to the accompanying drawings. First, as shown in FIG. 2 , the arc-extinguishing chamber assembly of the present invention at least includes a current transformer 11 , a busbar isolation switch 12 and an arc-extinguishing chamber. Such an arc chute assembly can be used in gas-insulated metal-enclosed switchgear (GIS).

According to the present invention, the first end 13 of the arc extinguishing chamber is fixed on the current transformer 11 , and the second end 14 of the arc extinguishing chamber is fixed on the busbar isolation switch 12 . For example, in one embodiment, the first end 13 of the arc-extinguishing chamber is the moving end of the arc-extinguishing chamber, and the second end 14 of the arc-extinguishing chamber is the static end of the arc-extinguishing chamber, and vice versa. This structure uses the current transformer 11 and the busbar isolating switch 12 as the support for the static and dynamic ends of the arc extinguishing chamber, instead of the traditional way of fixing the arc extinguishing chamber to the circuit breaker casing, so at least the upper, middle and lower insulators can be eliminated. , reducing the assembly workload and cost. In addition, this structure is also conducive to the optimization of the overall space.

Preferably, the first end 13 and the second end 14 of the arc extinguishing chamber can be fixed by the first conductor 15 and the second conductor 16 parallel to each other, so that the length direction of the arc extinguishing chamber is perpendicular to the first conductor 15 and the second conductor. 16 in the length direction. Specifically, as shown in FIG. 2 , the current transformer 11 and the busbar isolation switch 12 are staggered from each other in space, and the first end 13 of the arc extinguishing chamber is connected via the first conductor between the first end 13 and the current transformer 11 . 15 is fixed on the current transformer 15, the second end 14 of the arc-extinguishing chamber is fixed on the busbar disconnector 12 via the second conductor 16 connected between the second end 14 and the busbar disconnector 12, wherein the first conductor 15 is parallel on the second conductor 16 . In this preferred embodiment, the second conductor 16 can make full use of the insulating pot 17 of the bus disconnect switch and be fixed on one side of the insulating pot 17 .

A nozzle 18 is provided between the first end 13 and the second end 14 of the arc extinguishing chamber. Turning to FIG. 3 , there is shown a partially enlarged schematic view of the nozzle site in the arc chute assembly. In the embodiment shown in FIG. 3 , the nozzle 18 covers a pair of movable contacts 19 and stationary contacts 20 opposite to each other on the first end 13 and the second end 14 of the arc-extinguishing chamber. In addition, the spout 18 has a cylindrical shape with a consistent outer diameter, so as to enhance the overall strength of the spout 18 and improve its guiding effect on the movable contact 19 and the stationary contact 20 . Also, the inner wall of the spout 18 has a convex portion 21 protruding inward at a portion located between the movable contact 19 and the stationary contact 20 .

To sum up, the arc-extinguishing chamber assembly of the present invention utilizes the current transformer and the busbar isolation switch as the supports for the static and dynamic ends of the arc-extinguishing chamber. Compared with the traditional fixing method, the utility model can at least cancel the upper, middle and lower insulators, which reduces the assembly workload, and makes the overall structure simpler and easier to install, thereby saving the cost of assembly and maintenance.

It will be apparent to those skilled in the art that various modifications and variations can be made in the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, it is intended that the present invention covers the modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims (8)

1. An arc-extinguishing chamber assembly, characterized in that it comprises: a current transformer (11), a busbar isolation switch (12) and an arc-extinguishing chamber, wherein the first end (13) of the arc-extinguishing chamber is fixed to the current transformer, and the second end (14) of the arc extinguishing chamber is fixed on the busbar isolation switch, a nozzle (18) is arranged between the first end and the second end of the arc extinguishing chamber, and the The nozzle covers a pair of movable contacts (19) and stationary contacts (20) opposite to each other on the first end and the second end of the arc extinguishing chamber. 2. The arc-extinguishing chamber assembly according to claim 1, wherein the first end (13) of the arc-extinguishing chamber is one of a moving end and a static end, and the second end (13) of the arc-extinguishing chamber 14) is the other of the moving end and the static end. 3. The arc-extinguishing chamber assembly according to claim 1, wherein the first end (13) of the arc-extinguishing chamber is connected through a first end connected between the first end and the current transformer (11). The conductor (15) is fixed on the current transformer. 4. The arc-extinguishing chamber assembly according to claim 3, wherein the second end (14) of the arc-extinguishing chamber is connected via a second terminal between the second end and the busbar disconnector (12). A conductor (16) is fixed on the busbar disconnector, wherein the first conductor is parallel to the second conductor. 5. The arc-extinguishing chamber assembly according to claim 4, wherein the second conductor (16) is fixed on one side of the insulating basin (17) of the busbar disconnector (12). 6. The arc-extinguishing chamber assembly according to claim 4, wherein the length direction of the arc-extinguishing chamber is perpendicular to the length direction of the first conductor (15) and the second conductor (16). 7. The arc-extinguishing chamber assembly according to claim 1, characterized in that the spout (18) is cylindrical with a consistent outer diameter, and the inner wall of the spout is located at the movable contact (19) There is a convex portion (21) protruding inward at the position between the static contact (20). 8. A gas-insulated metal-enclosed switchgear, characterized in that the gas-insulated metal-enclosed switchgear comprises the arc chute assembly according to any one of claims 1-7.