A 252kV combined electrical equipment common box main busbar quick connection device

Abstract

The present invention belongs to the technical field of power switchgear, and particularly relates to a 252kV combined electrical appliance common box type main busbar quick docking device, comprising a main busbar housing, wherein a middle phase conductor and two side phase conductors are installed in the main busbar housing, a middle phase contact seat is installed at the bottom of the middle phase conductor, and a side phase contact seat is installed at the bottom of the side phase conductor. Axial positioning tooling is respectively installed on both sides of the main busbar housing, and the axial positioning tooling includes a baffle, and a middle phase guide rod that matches the middle phase contact seat and a side phase guide rod that matches the side phase contact seat are respectively passed through the baffle. The tops of the middle phase conductor and the side phase conductor are respectively fixed with positioning shaft pins, and the positioning shaft pins are inserted into the center of the normal flange of the normal positioning tooling, and the normal flange is fixed to the main busbar housing with positioning pins. The beneficial effects of the present invention are: it can meet the assembly requirements of the normal and axial dimensions in space, greatly reducing the assembly level requirements for the assemblers, greatly improving the assembly efficiency, and ensuring product reliability.

Description

(1) Technical field

[0002] The invention belongs to the technical field of power switchgear, and in particular relates to a 252kV combined electrical appliance common box type main busbar quick docking device. (2) Background Technology

[0004] The power industry is the lifeblood of the national economy, and this has driven the rapid growth of my country's power industry. With the widespread adoption of gas-insulated, metal-enclosed switchgear (GIMS) equipment, State Grid Corporation of China and various enterprise owners are placing increasingly stringent requirements on product reliability, on-site construction cycle times, and installation precision. The 252kV GIMS main busbar utilizes a three-phase common-chamber design, while all others utilize a separate-chamber design. The rated current is 4000A. The common-chamber main busbar structure is highly standardized. After the required busbars are assembled in the factory, the busbars are then connected end-to-end on site according to the drawings. These sections are then flanged and assembled, with the three-phase conductors installed inside. The axes of the three-phase conductors form the vertices of a triangle, a standard triangular arrangement that significantly reduces eddy current losses. Each phase conductor is fixed to a support insulator at one end and connected to the other support insulator via a contact. The support insulators connect each section. Metal inserts within the support insulators connect the conductors on both sides, forming a complete conductive circuit. The ends of the support insulators are fixed to the tank, providing support for the three-phase conductors.

[0005] Because the main busbar is three-phase and the conductors are arranged in a triangle, higher requirements are placed on the assembly personnel's assembly skills and installation accuracy. How to ensure accurate installation while ensuring improved assembly efficiency has become a difficult problem that needs to be solved urgently. (III) Summary of the Invention

[0007] In order to make up for the deficiencies of the prior art, the present invention provides a 252kV combined electrical appliance common box type main busbar quick connection device which improves assembly efficiency, has high assembly and installation precision, and improves product reliability.

[0008] The present invention is achieved through the following technical solutions:

[0009] A 252kV combined electrical appliance common box type main busbar quick docking device includes a main busbar housing, in which a middle phase conductor and two side phase conductors are installed. The device is characterized in that: a middle phase contact seat is installed at the bottom of the middle phase conductor, and a side phase contact seat is installed at the bottom of the side phase conductor. Axial positioning tooling is respectively installed on both sides of the main busbar housing. The axial positioning tooling includes a baffle, and a middle phase guide rod that cooperates with the middle phase contact seat and a side phase guide rod that cooperates with the side phase contact seat are respectively passed through the baffle. The tops of the middle phase conductor and the side phase conductor are respectively fixed with positioning shaft pins, the positioning shaft pins are inserted into the center of the normal flange of the normal positioning tooling, and the normal flange is fixed to the main busbar housing with the positioning pins.

[0010] The ends of the middle phase conductor and the side phase conductor are respectively provided with plum blossom contacts, which are fixed to the main busbar housing through insulators.

[0011] The middle phase guide rod and the side phase guide rod respectively pass through a shaft sleeve and a bushing located on the baffle.

[0012] The middle phase contact seat is fastened to the middle phase insulating platform, and the middle phase insulating platform is tightly fixed to the middle phase adjusting pad.

[0013] The side phase contact seat is fastened to the side phase insulating platform, and the side phase insulating platform is tightly fixed to the side phase adjusting pad.

[0014] The beneficial effects of the present invention are: it can meet the assembly requirements of the normal and axial dimensions in space, greatly reduce the assembly level requirements for assemblers, greatly improve assembly efficiency, and ensure product reliability. (IV) Description of the accompanying drawings

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Attachment Figure 1 This is a schematic diagram of the main structure of the present invention;

[0018] Attachment Figure 2 It is a side structural schematic diagram of the present invention;

[0019] Attachment Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0020] In the figure, 1 is the main busbar housing, 2 is the center phase conductor, 3 is the side phase conductor, 4 is the center phase contact seat, 5 is the side phase contact seat, 6 is the axial positioning tool, 7 is the baffle, 8 is the center phase guide rod, 9 is the side phase guide rod, 10 is the positioning shaft pin, 11 is the normal positioning tool, 12 is the normal flange, 13 is the positioning pin, 14 is the plum blossom contact seat, 15 is the insulator, 16 is the sleeve, 17 is the bushing, 18 is the center phase insulation platform, 19 is the center phase adjustment plate, 20 is the side phase insulation platform, and 21 is the side phase adjustment plate. (V) Specific implementation methods

[0022] The accompanying drawings illustrate a specific embodiment of the present invention. This embodiment comprises a main busbar housing 1, within which is mounted a center phase conductor 2 and two side phase conductors 3. A center phase contact 4 is mounted at the bottom of the center phase conductor 2, while a side phase contact 5 is mounted at the bottom of the side phase conductor 3. Axial positioning fixtures 6 are mounted on either side of the main busbar housing 1. These axial positioning fixtures 6 comprise baffles 7, each of which is provided with a center phase guide rod 8 for mating with the center phase contact 4 and a side phase guide rod 9 for mating with the side phase contact 5. The tops of the center phase conductor 2 and side phase conductors 3 are each secured with a positioning pin 10, which is inserted into the center of a normal flange 12 of a normal positioning fixture 11. The normal flange 12 is secured to the main busbar housing 1 with a positioning pin 13. A plum blossom contact 14 is mounted at the ends of the center phase conductor 2 and side phase conductor 3, respectively. The plum blossom contact 14 is secured to the main busbar housing 1 via an insulator 15. The center phase guide rod 8 and the side phase guide rod 9 pass through the sleeve 16 and bushing 17, respectively, located on the baffle 7. The center phase contact seat 4 is fastened to the center phase insulation platform 18, which is tightly fixed to the center phase adjustment pad 19. The side phase contact seat 5 is fastened to the side phase insulation platform 20, which is tightly fixed to the side phase adjustment pad 21.

[0023] The 252kV combined electrical appliance common box type main bus quick docking device of the present invention is used. First, the middle phase contact seat 4 is installed on the middle phase conductor 2, fastened to the middle phase insulating platform 18 by bolts, and then the middle phase insulating platform 18 is pre-fastened to the middle phase adjustment pad 19. The shaft sleeve 16, the bushing 17, and the baffle 7 are composed of the axial positioning tool 6, wherein the baffle 7 is designed with a triangular positioning hole symmetrical to the main bus to ensure that the three-phase requirements can be met in one installation. Then, the positioning pins are fixed at the two axial flanges of the main bus housing 1 respectively, so that the center line of the axial positioning tool 6 meets the coaxiality requirement with the main bus housing 1. The middle phase guide rod 8 is inserted into the axial positioning tool 6 to fit tightly with the middle phase contact seat 4 to ensure that the middle phase guide rod 8 and the axial positioning tool 6 meet the coaxiality requirement. The normal positioning tool 11 is positioned by the main bus normal flange 12, so that the center line of the normal positioning tool 11 meets the verticality requirement with the main bus housing 1. The axial positioning fixture 6 and the normal positioning fixture 11 are installed and debugged. Adjust the adjustment plate that matches the insulating platform and tighten the bolts. Remove the normal positioning fixture 11 of the middle phase conductor 2. Install the plum blossom contact seat 14 and insulator 15 at the end of the middle phase conductor 2. The middle phase is installed.

[0024] First, install the side phase contact seat 5 on the side phase conductor 3, fasten it to the side phase insulating platform 20 with bolts, and then pre-fasten the side phase insulating platform 20 to the side phase adjustment pad 21 on the side of the main busbar housing 1. Insert the side phase guide rod 9 into the axial positioning fixture 6 and tightly fit it with the side phase contact seat 5 to ensure that the side phase guide rod 9 and the axial positioning fixture 6 meet the coaxiality requirements. Position the normal positioning fixture 11 through the main busbar normal flange 12 so that the center line of the normal positioning fixture 11 and the main busbar housing 1 meet the verticality requirements. After the axial positioning fixture 6 and the normal positioning fixture 11 are installed and debugged, adjust the adjustment pad that matches the insulating platform and tighten the bolts, remove the normal positioning fixture 11 of the side phase conductor 3, install the plum blossom contact seat 14 and the insulator 15 at the end of the side phase conductor 3, and the side phase installation is completed.

[0025] The 252kV combined electrical appliance common box main busbar quick docking device of the present invention is used to first position the axial positioning tool 6 through the main busbar axial flange, insert the guide rod and tighten the insulating platform adjustment bolts to ensure that the guide rod contact seat and the axial positioning tool meet the coaxiality requirements. First, the normal positioning tool 11 is positioned through the main busbar normal flange, and the positioning pin 13 is inserted to fix the normal flange 12. The positioning shaft pin 10 is inserted into the center of the normal positioning tool 11 to fix it to the conductor, and the normal insulating platform bolts are adjusted to ensure that the guide rod and the normal positioning tool 11 meet the verticality requirements. In this way, through this main busbar quick docking device, the assembly requirements of the normal and axial dimensions in space are achieved, which greatly improves the assembly efficiency and ensures product reliability.

Claims

1. A 252kV combined electrical equipment common box type main busbar quick docking device, comprising a main busbar housing (1), wherein a middle phase conductor (2) and two side phase conductors (3) are installed in the main busbar housing (1), and wherein: The middle phase conductor (2) is installed with a middle phase contact seat (4) at the bottom, and the side phase conductor (3) is installed with a side phase contact seat (5) at the bottom. Axial positioning fixtures (6) are installed on both sides of the main busbar housing (1). The axial positioning fixtures (6) include baffles (7). The baffles (7) are respectively provided with middle phase guide rods (8) matched with the middle phase contact seat (4) and side phase guide rods (9) matched with the side phase contact seat (5). The tops of the middle phase conductor (2) and the side phase conductor (3) are respectively fixed with positioning shaft pins (10). The positioning shaft pins (10) are inserted into the normal positioning shaft pins. The center of the normal flange (12) of the positioning tool (11) is fixed to the main busbar housing (1) with a positioning pin (13). The axial positioning tool (6) and the normal positioning tool (11) are installed and debugged. The normal positioning tool (11) of the middle phase conductor (2) is removed, and the normal positioning tool (11) of the side phase conductor (3) is removed. The plum blossom contact seat (14) is installed at the end of the middle phase conductor (2) and the side phase conductor (3), respectively. The plum blossom contact seat (14) is fixed to the main busbar housing (1) through the insulator (15).

2. The 252kV combined electrical equipment common box type main busbar quick connection device according to claim 1 is characterized by: The middle phase guide rod (8) passes through the corresponding shaft sleeve (16) and bushing (17) located on the baffle (7), and the side phase guide rod (9) passes through the corresponding shaft sleeve (16) and bushing (17) located on the baffle (7).

3. The 252kV combined electrical equipment common box type main busbar quick connection device according to claim 1 is characterized by: The middle phase contact seat (4) is fastened to the middle phase insulating platform (18), and the middle phase insulating platform (18) is tightly fixed to the middle phase adjustment pad (19).

4. The 252kV combined electrical equipment common box type main busbar quick connection device according to claim 1 is characterized by: The side phase contact seat (5) is fastened to the side phase insulating platform (20), and the side phase insulating platform (20) is tightly fixed to the side phase adjustment pad (21).

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