CN203180418U - Breaker chamber used for gas insulation switch equipment - Google Patents

Abstract

The utility model provides a breaker chamber used for gas insulation switch equipment. Three groups of current transformers are distributed in the breaker chamber. A user can select a quantity of the current transformers according to a demand. Simultaneously, the breaker chamber adopts a new structure design. The needed current transformers are arranged reasonably, support of the conventional breaker chamber is improved and original support compartments are reduced. Through adopting a mode that the current transformers are preassembled into modules and then are assembled to the breaker chamber, installation of the partial current transformers is convenient and rapid.

Description

For circuit breaker compartments on gas insulated switchgear

technical field

The utility model belongs to the technical field of electric power products, and in particular relates to a circuit breaker chamber applied to gas-insulated switchgear, in particular to sulfur hexafluoride gas-insulated switchgear.

Background technique

Usually, a maximum of three sets of transformers are provided, because of the limitation of the original circuit breaker room, only one set of transformers can be built in, and the other two sets are placed outside the gas chamber.

Figure 1 is an existing circuit breaker room, when it is working, there is a compartment frame under it to support, and there are two busbar rooms on it, which are respectively the front busbar room and the rear busbar room, and the housing 18 is connected to the two busbar rooms respectively , the current passes through the wall bushing 11 with transformer, then to the copper bar 12, through the circuit breaker 13, copper bar 14, block current transformer 15, copper bar 16, copper bar 17, and finally to the second with mutual inductance The wall bushing 11 of the device is connected to the rear busbar room.

Due to the limitations of the cabinet structure and installation, the transformer placed outside the gas chamber is small in size, has limited insulation level, and low capacity, which often cannot meet customer needs.

Utility model content

The purpose of the utility model is to provide a circuit breaker room for gas insulated switchgear, which has a more reasonable structure, larger capacity and more convenient and quick assembly. In the circuit breaker chamber used for gas insulated switchgear of the utility model, all the current transformers are located inside the circuit breaker chamber and are connected with the circuit inside the circuit breaker chamber.

According to a preferred embodiment of the present invention, the current transformer includes a first current transformer, a second current transformer and a third current transformer. The first and second current transformers are pre-assembled current transformer modules.

According to a preferred embodiment of the invention, there is no supporting compartment below the circuit breaker compartment.

In the circuit breaker chamber of the utility model, the two sets of current transformers originally placed outside the gas chamber are connected to the internal circuit of the gas chamber, which solves the problems of small capacity and poor insulation of the current transformers originally placed outside the gas chamber; The way that the transformer is pre-assembled into a module and then assembled to the air chamber makes the installation of the current transformer easier and faster.

Description of drawings

Fig. 1 is a schematic diagram of the structure of an existing upper circuit breaker chamber for gas insulated switchgear;

Fig. 2 is a schematic diagram of the structure of the circuit breaker chamber used in the gas insulated switchgear of the present invention;

Figure 3 is a diagram of pre-installed transformer components;

Figure 4 is the mosaic view of the current circuit breaker chamber and the support compartment.

Detailed ways

Hereinafter, with reference to the accompanying drawings, a specific description of alternative embodiments of the present invention is given.

Fig. 2 is a schematic diagram of the utility model. In the circuit breaker chamber for gas insulated switchgear of the utility model, the first current transformer 23 and the second current transformer 27 are connected to the internal circuit of the circuit breaker chamber, that is, three groups of current transformers 23, 27, 29 all located in the internal circuit of the circuit breaker room.

As shown in Figure 2, the circuit breaker room of the utility model specifically includes a wall-through bushing 21, a first connecting copper bar 22 between the bushing and the transformer, a first current transformer 23, and a first connecting copper bar between the transformer and the circuit breaker. 24. Circuit breaker 25, transformer and circuit breaker second connecting copper bar 26, second current transformer 27, connecting copper bar 28 and third current transformer 29, bushing and transformer second connecting copper bar 210, shell Body 211. The components are connected in sequence, and then return to another wall bushing to form a loop.

The first current transformer 23, the second current transformer 27 and the third current transformer 29 in the circuit breaker room of the present utility model may use the same current transformer or different current transformers.

As shown in Figure 3, each phase of the first current transformer 23 is pre-installed with the transformer bracket 232 to form a sub-assembly and then hoisted to the air chamber; the second current transformer 27 is pre-installed with the transformer bracket in the same way. Assembled, composed of sub-assemblies and hoisted to the air chamber.

The use of a larger air chamber also eliminates the need to install a support compartment under the circuit breaker chamber, making the whole cabinet more compact and saving assembly time. When working, the lower part of the shell is supported on the ground, and the upper part is connected with two busbar rooms.

As shown in Figure 4, it is the assembly drawing of the original circuit breaker chamber 31 and the supporting compartment 32. The function of the supporting compartment 32 is to make the height of the circuit breaker chamber 31 consistent with the height of the circuit breaker chambers of other switch cabinets, thereby Breaker room splicing. After adopting the scheme of the utility model, the supporting compartment 32 is no longer needed, and its height can be directly consistent with the height of the circuit breaker chamber of other switch cabinets.

The circuit breaker chamber structure used in the gas insulated switchgear of the utility model improves the capacity of the mutual inductor. Due to the new air chamber structure, all transformers are built into the air chamber, which completely solves the insulation and capacity problems of the original transformers, and makes the assembly of the whole cabinet simpler and more convenient.

Although the preferred embodiment of the utility model and accompanying drawings are disclosed for the purpose of illustration, those skilled in the art can make various replacements, Variations and retouching. Therefore, the utility model should not be limited to the content disclosed in the preferred embodiments and drawings, and the scope of protection of the utility model should be defined by the appended claims.

Claims (4)

1. A circuit breaker room for gas insulated switchgear, comprising, characterized in that all current transformers (23, 27, 29) are located inside the circuit breaker room and connected to the circuit inside the circuit breaker room. 2. The circuit breaker room for gas insulated switchgear according to claim 1, characterized in that: said current transformer comprises a first current transformer (23), a second current transformer (27) and a second current transformer Three current transformers (29). 3. The circuit breaker room for gas insulated switchgear according to claim 1 or 2, characterized in that: the first current transformer (23) and the second current transformer (27) are respectively pre-installed The completed current transformer module. 4. The circuit breaker compartment for gas insulated switchgear according to claim 3, characterized in that there is no supporting compartment under the circuit breaker compartment.

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