CN219394202U

CN219394202U - Detachable structure for connecting GIS with cable terminal or transformer terminal

Info

Publication number: CN219394202U
Application number: CN202320454074.7U
Authority: CN
Inventors: 甲宗庆; 苏少帅; 刘永; 李伟
Original assignee: Shandong Taikai High Volt Switchgear Co Ltd
Current assignee: Shandong Taikai High Volt Switchgear Co Ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-07-21
Anticipated expiration: 2033-03-08

Abstract

The utility model relates to the field of detachable connection structures, in particular to a detachable structure for connecting a GIS (gas insulated switchgear) with a cable terminal or a transformer terminal, which comprises a transition plate, a conductor support piece, a conductive torch, a conductor, a terminal and a sealing plate; the conductive torch is arranged on the insulating part, the conductor support part is of a hollow square structure and is provided with an opening at the top, a plurality of groups of through holes are arranged on two sides of the conductor support part, a plurality of groups of bolt holes are arranged on the bottom of the conductor support part and the transition plate, the side edge of the conductor support part is connected with the conductive cylinder, and the bottom of the conductor support part is connected with the transition plate; the top and the bottom of the conductor are respectively provided with an upper contact seat and a lower contact seat, the upper contact seat is connected with the transition plate, and the lower contact seat is connected with the terminal; the shrouding sets up in insulating piece left side opening part. The utility model can realize isolation of GIS equipment under 500kV in high-voltage test of high-voltage cable and transformer without disassembling bus, and has the advantages of convenient operation, easy assembly and improved field test efficiency.

Description

Detachable structure for connecting GIS with cable terminal or transformer terminal

Technical Field

The utility model relates to the field of detachable connection structures, in particular to a detachable structure for connecting a GIS (gas insulated switchgear) with a cable terminal or a transformer terminal.

Background

Gas insulated metal switching devices, also known as GIS devices, are an important component of electrical power systems, typically in connection with transformers, high voltage cables, and through conduit bus bars for the transfer of electrical energy. One end of a connecting conductor of the transformer, the high-voltage cable and the GIS adopts SF6 gas with rated pressure as an insulating medium, and the other end adopts oil or epoxy parts as the insulating medium. When the transformer substation is built, the GIS, the transformer and the high-voltage cable are respectively supplied by different suppliers, and each supplier performs division cooperation of the working interface according to the national standard requirement. The high-voltage class combined electrical appliance with 550kV and above has high requirements on the cleanliness of internal parts, and the high-voltage class combined electrical appliance is required to be in one-time butt joint when being connected with a transformer and a cable. The voltage applied by different equipment is different when the field equipment performs high-voltage test, so that the equipment disassembling range is reduced during the test, the equipment can be separated temporarily in order to realize that the different equipment can perform the high-voltage test independently, and the equipment can be quickly restored to the running state after the test is finished. Under the existing conditions, temporary isolation measures among different devices are not easy to realize for the short bus and the L-shaped conductive loop structure.

Disclosure of Invention

The utility model aims to solve the problems that the existing GIS, transformer and high-voltage cable in the background technology are of linear detachable structures, a bus is short, an L-shaped conductive loop conductor cannot be used, and high-voltage tests are carried out on different on-site equipment to cause inconvenience, and provides a detachable structure for connecting the GIS with a cable terminal or a transformer terminal.

The technical scheme of the utility model is as follows: a detachable structure for connecting GIS with cable terminal or transformer terminal comprises a transition plate, a conductor support piece, a conductive torch, a conductor, a terminal and a sealing plate;

the conductive torch is arranged on the insulating part, the conductor support part is of a hollow square structure and is provided with an opening at the top, a plurality of groups of through holes are arranged on two sides of the conductor support part, a plurality of groups of bolt holes are arranged on the bottom of the conductor support part and the transition plate, the side edge of the conductor support part is connected with the conductive cylinder, and the bottom of the conductor support part is connected with the transition plate; the top and the bottom of the conductor are respectively provided with an upper contact seat and a lower contact seat, the upper contact seat is connected with the transition plate, and the lower contact seat is connected with the terminal; the shrouding sets up in insulating piece left side opening part.

Preferably, the number of through holes on two sides of the conductor support piece is four and phi 14, and the conductor support piece is connected with the conductive cylinder through four groups of bolts.

Preferably, the number of the bolt holes at the bottom of the conductor support piece is four, the number of the bolt holes on the transition plate is eight, the bolt holes are all M12 bolt holes, the bottom of the conductor support piece is connected with the transition plate through four groups of bolts, and the transition plate is connected with the upper contact seat through four groups of bolts.

Preferably, the terminal is a cable or transformer terminal.

Preferably, the conductor support is sheathed with a shield.

Compared with the prior art, the utility model has the following beneficial technical effects: the device can realize isolation between GIS equipment under 500kV and high-voltage cables and transformers in high-voltage tests under the condition of not disassembling buses, is convenient to operate, is easy to assemble, and improves field test efficiency.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a conductive support;

fig. 3 is a schematic structural view of the upper contact base.

Reference numerals: 1. a transition plate; 2. a conductor support; 3. a shield; 4. a conductive torch; 5. an upper contact base; 6. a conductor; 7. a lower contact base; 8. a terminal; 9. and (5) sealing plates.

Detailed Description

As shown in fig. 1-3, the utility model provides a detachable structure for connecting a GIS with a cable terminal or a transformer terminal, which comprises a transition plate 1, a conductor support 2, a conductive cylinder 4, a conductor 6, a terminal 8 and a sealing plate 9;

the conductor support 2 is of a hollow square structure and is provided with an opening at the top, four groups of phi 14 through holes are formed in two sides of the conductor support 2, four groups of M12 bolt holes are formed in the bottom of the conductor support 2, eight groups of M12 bolt holes are formed in the transition plate 1, the side edge of the conductor support 2 is connected with the conductor cylinder 4 through four groups of bolts, the bottom of the conductor support 2 is connected with the transition plate 1 through four groups of bolts, and the shielding cover 3 is sleeved outside the conductor support 2; the top and the bottom of the conductor 6 are respectively provided with an upper contact seat 5 and a lower contact seat 7, the upper contact seat 5 is connected with the transition plate 1 through four groups of bolts, the lower contact seat 7 is connected with a terminal 8, and the terminal 8 is a cable or transformer terminal; a closing plate 9 is provided at the opening on the left side of the insulating member.

Working principle: when GIS equipment and cable terminal or transformer terminal carry out high voltage test respectively, demolish inside electrically conductive piece: the left side sealing plate 9 is opened, the shielding case 3 is removed, the connecting bolts between the conductor support 2 and the transition plate 1 and the conductive cylinder 4 are loosened, and the conductor support 2 and the conductive cylinder 4 are removed. The upper contact 5, conductor 6 and lower contact 7 are removed and the end shield is installed in the insulator and cable termination or transformer termination position.

When the GIS equipment and the cable terminal or the transformer terminal are required to be restored to be installed after the high-voltage test is finished, the insulator and the tail end shield at the cable terminal or the transformer terminal are detached, the upper contact seat 5, the conductor 6 and the lower contact seat 7 are restored to be installed, the conductive torch 4 is installed, the conductor support 2, the transition plate 1 and the conductive cylinder 4 are fastened by bolts, and finally the shielding cover 3 and the left side sealing plate 9 are installed.

The utility model can realize isolation of GIS equipment under 500kV in high-voltage test of high-voltage cable and transformer without disassembling bus, and has the advantages of convenient operation, easy assembly and improved field test efficiency.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The detachable structure for connecting the GIS with the cable terminal or the transformer terminal is characterized by comprising a transition plate (1), a conductor support piece (2), a conductive cylinder (4), a conductor (6), a terminal (8) and a sealing plate (9);

the conductor support (2) is of a hollow square structure and is provided with an opening at the top, a plurality of groups of through holes are formed in two sides of the conductor support (2), a plurality of groups of bolt holes are formed in the bottom of the conductor support (2) and the transition plate (1), the side edge of the conductor support (2) is connected with the conductor support (4), and the bottom of the conductor support (2) is connected with the transition plate (1); the top and the bottom of the conductor (6) are respectively provided with an upper contact seat (5) and a lower contact seat (7), the upper contact seat (5) is connected with the transition plate (1), and the lower contact seat (7) is connected with the terminal (8); the sealing plate (9) is arranged at the opening at the left side of the insulating piece.

2. The detachable structure for connecting a GIS to a cable termination or a transformer termination according to claim 1, wherein the number of through holes on both sides of the conductor support (2) is four and phi 14 through holes, and the conductor support (2) is connected to the conductive torch (4) by four sets of bolts.

3. The detachable structure for connecting a GIS with a cable terminal or a transformer terminal according to claim 1, wherein the number of bolt holes at the bottom of the conductor support member (2) is four, the number of bolt holes on the transition plate (1) is eight, the bolt holes are all bolt holes of M12, the bottom of the conductor support member (2) is connected with the transition plate (1) through four groups of bolts, and the transition plate (1) is connected with the upper contact seat (5) through four groups of bolts.

4. The detachable construction of a GIS in connection with a cable termination or a transformer termination according to claim 1, characterized in that the termination (8) is a cable or a transformer termination.

5. The detachable construction of a GIS in connection with a cable termination or transformer termination according to claim 1, characterized in that the conductor support (2) is covered with a shielding (3).