CN203734251U - Three-phase common box bus used for 252kV high-voltage switch - Google Patents

Abstract

The utility model discloses a three-phase common-box busbar for a 252kV high-voltage switch, which comprises a casing, pot-type insulators are arranged at both ends of the casing, and a conductive component is arranged in the casing, and the conductive component includes three phases parallel to each other. For long conductors, one end of each long conductor is connected to a pot insulator through a contact seat, and the other end of each phase long conductor is connected to another pot insulator through a fixed conductor; the long conductor and the contact seat are connected by a plug-in structure , the long conductors are connected and fixed to the fixed conductors; there is at least one Y-shaped insulating support frame between the three-phase long conductors, the Y-shaped insulating support frame is perpendicular to the three-phase long conductors, and the three ends of the Y-shaped insulating support frame are respectively It is connected and fixed with three-phase long conductors. Since the Y-shaped insulating support frame is used, the three-phase long conductor can be fixed by the Y-shaped insulating support frame, which limits the deformation of the three-phase long conductor under the action of electromotive force to a certain extent, and reduces the overall deformation of the long conductor, so that The three-phase common box bus is further lengthened.

Description

Three-phase Common Box Bus for 252kV High Voltage Switch

technical field

The utility model relates to the technical field of high-voltage electrical appliances, and more specifically relates to a three-phase common-box busbar for a 252kV high-voltage switch.

Background technique

As a component for collecting, distributing and transmitting electric energy, the busbar is an indispensable part of high-voltage electrical products. However, most of the three-phase common-box busbars used in 252kV GIS high-voltage electrical appliances are relatively short, and busbars are needed between intervals When the connection is relatively long, many busbar connections are required to meet the requirements, and the cost is relatively high. In order to reduce costs and reduce the number of shell flanges, insulating basins, conductors and contact seats, it is necessary to use double insulating supports to lengthen the length of the 252kV GIS three-phase common box busbar.

After searching the existing technology, it is found that in the existing 252kV GIS three-phase common box busbar structure, there is an insulating support structure to extend the length of the busbar, but the insulating parts are all fixed on the shell, and the three-phase conductors are connected to each other. There is no insulating support, so it is necessary to add a boss on the inner wall of the housing to fix the insulating support, which makes the structure of the inner wall of the housing complicated. At present, there is no structure that uses insulating support between three-phase conductors in the high-voltage industry. If the length of a single busbar is required to be longer and the inner wall of the shell does not need to be complicated to manufacture, it is necessary to use a structure that uses insulating support between three-phase conductors. , constrain the deformation of the three-phase conductors, and further lengthen the length of the busbar.

Utility model content

Aiming at the defects existing in the prior art, the purpose of this utility model is to provide a three-phase common-box busbar for 252kV high-voltage switchgear, so that the three-phase conductors of the high-voltage switchboard use an insulatingly supported common-box busbar to meet the requirements for GIS Requirements for simplification of the busbar housing and extension of the busbar length in gas-insulated metal-enclosed switches.

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

A three-phase common-box busbar for 252kV high-voltage switches, including a housing, the two ends of the housing are respectively provided with basin-type insulators, and the basin-type insulators are connected and fixed to the housing;

The housing is provided with a conductive assembly, the conductive assembly includes three parallel long conductors, one end of each phase long conductor is connected to a pot insulator through a contact seat, and the other end of each phase long conductor is connected to a fixed conductor. connected to another pot-type insulator; wherein, the long conductor is connected to the contact seat using a plug-in structure, and the long conductor is connected and fixed to the fixed conductor;

At least one Y-shaped insulating support frame is also provided between the three-phase long conductors, the Y-shaped insulating support frame is perpendicular to the three-phase long conductors, and the three ends of the Y-shaped insulating support frame are respectively connected to the Three-phase long conductor connections are fixed.

The distance between the adjacent Y-shaped insulating support frames or/and the distance between the Y-shaped insulating support frame and the pot insulator are equal.

Said distance is in the range of 2-4 meters.

The Y-shaped insulating support frame is an epoxy casting.

A hole is opened on the long conductor, and the end of the Y-shaped insulating support frame extends into the hole and is connected and fixed with the long conductor by bolts.

Compared with the prior art, the three-phase common box busbar for 252kV high-voltage switch of the utility model adopts the Y-shaped insulating support frame, and the three-phase long conductor can be fixed by the Y-shaped insulating support frame, which is limited to a certain extent. The deformation of the three-phase long conductors under the action of electrodynamic force reduces the overall deformation of the long conductors, thereby further lengthening the three-phase common box busbar.

Description of drawings

Fig. 1 is the structural representation of a kind of three-phase common box busbar that is used for 252kV high voltage switch of the present utility model;

Fig. 2 is a cross-sectional view along line E-E in Fig. 1 .

Detailed ways

The technical scheme of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

Please refer to Figure 1 and Figure 2 for a three-phase common-box busbar for 252kV high-voltage switchgear, the shell 4, and the two ends of the shell 4 are respectively equipped with basin-type insulators 1 and 7, and basin-type insulators 1 and 7 It is fixedly connected with the housing 4 through a bolt connection;

The housing 4 is provided with a conductive assembly, the conductive assembly includes three long conductors 3 parallel to each other, one end of each phase long conductor 3 is connected to a pot insulator through a contact seat 2, and the other end of each phase long conductor is passed through a fixed conductor 6 is connected with another pot insulator; among them, the pot insulator and the contact seat are fixedly connected by bolts, and the fixed conductor is connected with the pot insulator by bolts; the long conductor and the fixed conductor are fixedly connected by bolts; the long conductor and the contact seat Plug connection;

There is also at least one Y-shaped insulating support frame 5 between the three-phase long conductors, the Y-shaped insulating support frame is perpendicular to the three-phase long conductors, and the three ends of the Y-shaped insulating support frame are respectively connected and fixed to the three-phase long conductors.

Preferably, the distance between adjacent Y-shaped insulating support frames or/and the distance between the Y-shaped insulating support frame and the pot insulator are equal, and the range of the distance is 2-4 meters.

Preferably, holes are opened on the long conductor 3 , and the three ends of the Y-shaped insulating support frame respectively protrude into the corresponding holes and are connected and fixed with the long conductor by bolts 8 .

The three-phase long conductor 3 and the Y-shaped insulating support frame 5 are fastened by connecting bolts 8, so that the three-phase long conductors can be connected together by the Y-shaped insulating support frame, and the Y-shaped insulating support frame is an epoxy casting, which can make The three-phase conductors are insulated, and at the same time support and limit the position between the three-phase long conductors, so that the three-phase long conductors can withstand greater electromotive force.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the purpose of the utility model, rather than as a limitation of the utility model, as long as within the essential scope of the utility model, the above-mentioned The changes and modifications of the above embodiments will fall within the scope of the claims of the present utility model.

Claims (5)

1. A three-phase common-box busbar for 252kV high-voltage switches, comprising a housing, characterized in that: The two ends of the housing are respectively provided with basin-type insulators, and the basin-type insulators are connected and fixed to the housing; The housing is provided with a conductive assembly, the conductive assembly includes three parallel long conductors, one end of each phase long conductor is connected to a pot insulator through a contact seat, and the other end of each phase long conductor is connected to a fixed conductor. connected to another pot-type insulator; wherein, the long conductor is connected to the contact seat using a plug-in structure, and the long conductor is connected and fixed to the fixed conductor; At least one Y-shaped insulating support frame is also provided between the three-phase long conductors, the Y-shaped insulating support frame is perpendicular to the three-phase long conductors, and the three ends of the Y-shaped insulating support frame are respectively connected to the Three-phase long conductor connections are fixed. 2. The three-phase common box busbar according to claim 1, characterized in that: The distance between the adjacent Y-shaped insulating support frames or/and the distance between the Y-shaped insulating support frame and the pot insulator are equal. 3. The three-phase common box busbar according to claim 2, characterized in that: Said distance is in the range of 2-4 meters. 4. The three-phase common box busbar according to claim 1, characterized in that: The Y-shaped insulating support frame is an epoxy casting. 5. The three-phase common box busbar according to claim 1, characterized in that: A hole is opened on the long conductor, and the end of the Y-shaped insulating support frame extends into the hole and is connected and fixed with the long conductor by bolts.