CN201549425U - A static side device of an outdoor high-voltage AC porcelain column SF6 circuit breaker - Google Patents

Abstract

The utility model relates to the field of design and manufacture of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker, and discloses a static side device of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker. It includes a flange, a support body, a static contact seat, a static contact and a static arc contact which are sequentially fixedly connected, and is characterized in that the support body is cylindrical.

Description

A static side device of an outdoor high-voltage AC porcelain column SF6 circuit breaker

technical field

The utility model relates to the field of design and manufacture of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker, in particular to a static side device of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker.

Background technique

The outdoor high-voltage AC porcelain column SF6 circuit breaker belongs to the three-phase mechanical linkage operation circuit breaker, which is composed of three single poles, and can realize remote electric control or local manual control. With the vigorous transformation of urban and rural power grids, such outdoor high-voltage AC porcelain column SF6 circuit breakers are more and more widely used. The support body on the static side of this type of outdoor high-voltage AC porcelain column SF6 circuit breaker adopts a cylindrical copper conductor, which takes into account both support and conduction. However, the internal stroke of the circuit breaker is relatively large, which requires a relatively long copper conductor. There is poor alignment of the product, resulting in increased synchronism and bounce; on the other hand, the longer copper conductor cannot guarantee the verticality, and it is easy to cause bending during transportation. The above-mentioned two disadvantages cause the diameter of the copper conductor to increase, the cost to increase, and the product to be self-heavy.

Contents of the invention

The purpose of this utility model is to provide a static side device of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker, which can overcome the problems of increased diameter, increased cost and heavy product weight in the prior art due to the need for longer copper conductors. Defects, and can make the circuit breaker get better heat dissipation, synchronization and bounce.

In order to achieve the above object, the utility model adopts the following technical solutions to achieve.

A static side device of an outdoor high-voltage AC porcelain column type SF ₆ circuit breaker, including flanges, support bodies, static contact seats, static contacts and static arc contacts that are fixedly connected in sequence, characterized in that the support body It is cylindrical.

The further improvement of the utility model is that the support body is an aluminum cylinder; its further feature is that an adsorbent cylinder is fixed on the flange, the adsorbent cylinder is located in the aluminum cylinder, and the inside and outside of the aluminum cylinder SF ₆ gas communication.

Since the utility model changes the supporting body into a cylindrical shape, the cylindrical structure is obviously superior to the columnar structure in terms of strength, flow guide and heat transfer under the same quality and quantity of materials; especially the aluminum cylinder is used, the mechanical rigidity and The strength is better than that of copper conductors, which can overcome the defects of larger diameter, higher cost, and heavy product weight in the existing technology due to the need for longer copper conductors, and can enable the circuit breaker to obtain better heat dissipation, synchronization and bounce sex.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Figure 1 is a schematic structural view of the static side device of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker of the present utility model, which is suitable for LW25A-126 outdoor high-voltage AC porcelain column SF ₆ circuit breaker;

Figure 2 is a schematic diagram of the internal structure of the single-stage interrupter of the LW25A-126 outdoor high-voltage AC porcelain column SF ₆ circuit breaker;

In the figure: 1-flange; 2-support; 3-static contact seat; 4-static contact; 5-static arc contact; 6-interrupter porcelain sleeve; 7-nozzle; 8-moving contact ; 9-pressure cylinder; 10-piston; 11-piston rod; 12-adsorbent cartridge.

Detailed ways

Referring to Figure 1, it is a static side device of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker of the present utility model, which mainly includes a flange 1, a support body 2, a static contact seat 3, and a static contact 4 that are welded in sequence And the static arc contact 5, the support body 2 is an aluminum cylinder, and the aluminum cylinder wall is opened with holes, which causes the inner cavity of the aluminum cylinder to communicate with the SF ₆ gas outside the aluminum cylinder, and the entire static side device is surrounded by SF ₆ gas.

Referring to Figure 2, extend the static-side device into the porcelain sleeve of the arc extinguishing chamber, the flange 1 of the static-side device and the flange of the porcelain sleeve 6 of the arc-extinguishing chamber are fixed together by bolts, and the middle of the flange 1 of the static-side device is installed There is an adsorbent cylinder 12, one end of the adsorbent cylinder 12 is airtightly connected with the flange 1 of the static side device, and the other end is located in the aluminum cylinder. In the porcelain sleeve 6 of the arc extinguishing chamber, the opposite end of the static side device is installed with the moving side device of the circuit breaker. The moving side device mainly includes a piston rod 11, a piston 10, a pressure cylinder 9, a moving contact 8, and a nozzle 7.

Claims (3)

1. A static side device of an outdoor high-voltage AC porcelain column type SF ₆ circuit breaker, comprising a flange, a support body, a static contact seat, a static contact and a static arc contact that are fixedly connected in sequence, and is characterized in that the The support body is cylindrical. 2. The static side device of an outdoor high-voltage AC porcelain column SF ₆ circuit breaker according to claim 1, wherein the support body is an aluminum cylinder. 3. The static side device of a kind of outdoor high-voltage AC porcelain column type SF ₆ circuit breaker according to claim 1, an adsorbent cartridge is fixed on the flange, and the adsorbent cartridge is located in the aluminum cylinder, so that The SF ₆ gas inside and outside the aluminum cylinder is connected.

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