CN203690131U - Grounding knife static contact fitting for 800kV converter station low-end valve hall - Google Patents

Abstract

The utility model relates to a ground knife static contact fitting for a low-end valve hall of an 800kV converter station. The side port is pierced with export discharge equipment. The lower hemisphere is provided with the bottom opening for piercing the post insulator, and the upper hemisphere is opened for the top opening for piercing the pipe busbar fittings. The pipe busbar fittings are a pair of arched half-rings. The club fixing chassis includes a T frame body, the bottom end of the T frame body is connected to the post insulator, the top end is connected to the pipe busbar fittings through a ball joint, and the side end is connected to the overflow plate of the wire fixing fittings. The static contact support frame connects the flange plate and the ground knife static contact, and the large port of the ground knife static contact is placed in the side port of the anti-stunning ball. One end of the current-carrying wire is over-currently welded with a cable in the tube busbar of the inner clamp of the tube busbar fitting, and the other end is overcurrently welded with the flow plate of the wire fixing fitting.

Description

800kV converter station low-end valve hall ground knife static contact fittings

technical field

The utility model relates to an electric power fitting, in particular to a ground knife static contact fitting for a low-end valve hall of an 800kV converter station.

Background technique

At present, my country has become a major DC power transmission country with the most DC projects in operation and under construction, the largest capacity and the longest lines in the world. The converter station is an important part of the DC transmission project. The valve hall of the converter station is a closed space. The valve hall is equipped with important equipment such as valve towers, bushings, and voltage transformers. The conversion of AC and DC is also in the valve hall. Therefore, corona and radio interference in the valve hall are particularly serious. At the same time, due to the limited space in the valve hall, the spatial structure of the existing fittings can no longer meet the corresponding space requirements. Therefore, in the design process, not only electrical performance and mechanical performance must be considered, but also enough space should be ensured for the installation structure to realize the fixation of the static contact of the ground knife, and to complete the connection with the pole bus optical CT and the overcurrent between the wall bushings .

Contents of the invention

In view of the above problems, the purpose of this utility model is to provide a ground knife static contact that can be reasonably installed in a limited space, and realize the overcurrent requirements, mechanical connection strength and anti-corrosion between the pole bus light CT and the wall bushing Corona and noise-proof 800kV converter station low-end valve hall ground knife static contact fittings.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a ground knife static contact fitting for the low-end valve hall of an 800kV converter station, which is characterized in that it includes an anti-dizzy ball, a pipe busbar fitting, and a wire fixing fitting , a club fixed chassis, a static contact support frame and several current-carrying wires; the anti-halo ball is a shell formed by connecting the upper hemisphere and the lower hemisphere, and the side wall of the shell is provided with two One of the side openings is used to pass through the wire fixing fittings, and the other side opening is used to pass through the discharge discharge equipment; the bottom of the lower hemisphere of the shell is provided with a bottom for passing through the post insulator The top of the upper hemisphere of the housing is provided with a top opening for passing through the bus bar fittings, and a ball bracket is connected to the edge of the upper opening of the lower hemisphere; the bus bar fittings include a pair of clamps The arched half-rings of the pipe bus, each of the two side walls of the arched half-rings has a concave table hole to connect the other arched half-rings through bolts; the wire fixing hardware includes a flow plate, so The flow plate is respectively connected with six independent wire clamps as a whole through bolts; the club fixing chassis includes a T frame body, the bottom end of the T frame body is connected to the post insulator, and the T frame body The top end is connected to the pipe busbar fittings through a ball joint, so that the pipe busbar fittings can rotate 360° around the pipe busbar on the club fixing chassis, and the side ends of the T frame body are connected to the wires by welding Fix the flow plate of the hardware; the bottom of the static contact support frame is connected to the flange plate at the upper end of the post insulator by bolts, and the static contact support frame is fixedly connected to a static ground knife for discharging discharge by bolts. Contact, the large port of the static contact of the ground knife is placed in the side port of the anti-halation ball; the current-carrying wires are several, and one end of each current-carrying wire is connected to the inside of the pipe busbar fitting One of the cables in the bus bar of the clip is in contact with overcurrent welding, and the other end of the current-carrying wire is in contact with a corresponding position of the overcurrent plate of the wire fixing hardware.

Each of the ball brackets is bent from an aluminum alloy plate, and each of the ball brackets is connected to the flange of the post insulator.

The anti-sickness ball, the ball bracket, the club fixing chassis and the static contact supporting frame are all insulators.

The bus bar fittings, the current-carrying wires and the wire fixing fittings are all conductors of the overcurrent path.

The outer surface of the anti-halation ball is polished and polished to ensure its smoothness, and the two side openings, the bottom opening and the top opening of the anti-halation ball are not in contact with the pipe busbar fittings, the pipe busbar, the wire fixing fittings and The post insulator contacts.

The angle between the centers of the two sides of the anti-sickness ball is greater than 90°, and the opening edges of the two sides, the bottom and the top of the anti-sickness ball are respectively bent towards the inside of the anti-sickness ball.

Because the utility model adopts the above technical scheme, it has the following advantages: 1. The utility model adopts the ball rod to fix the bottom of the T-shaped frame of the chassis to be connected to the post insulator, and the top is connected to the pipe busbar fittings through the ball joint, and the side ends are connected The wire fixes the flow plate of the fittings, so the pipe busbar can be rotated and fine-tuned relative to the post insulator, so as to facilitate the adjustment of the winding degree of the pipe busbar due to its own weight or vibration. 2. In this utility model, since the busbar fittings and the wire fixing fittings are welded together through the current-carrying conductor, and all other parts are connected by fasteners, the on-site installation does not require any welding or crimping, etc. On-site installation is flexible and detachable, and it is also convenient for product transportation and on-site installation and construction. 3. Since the utility model adopts six independent wire clamps to connect with the pole bus light CT for overcurrent, it can make the current-carrying wires without anti-halation devices outside the anti-halation ball have better anti-halation itself. The utility model can be widely used for the connection between the electrical equipment of the low-end valve hall of the converter station.

Description of drawings

Fig. 1 is a structural representation of the utility model

Fig. 2 is a top cross-sectional schematic diagram of Fig. 1

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

As shown in Fig. 1 and Fig. 2, the utility model includes an anti-halo ball 10, a pipe busbar fitting 20, a wire fixing fitting 30, a club fixing chassis 40, a static contact support frame 50 and several current-carrying Wire 60.

The anti-halo ball 10 of the present utility model is a shell formed by connecting the upper hemisphere 11 and the lower hemisphere 12, and the side wall of the shell is provided with two side ports 13, 14 whose center included angle is greater than 90°, wherein the side port 13 is used for The side opening 14 is used for threading and leading out the discharge equipment for threading the wire fixing fitting 30 . The bottom of the lower hemisphere 12 of the housing is provided with a bottom opening 15 for piercing the post insulator 1, and the top of the upper hemisphere 11 of the housing is provided with a top opening 16 for piercing the pipe busbar fittings 20, and the upper opening edge of the lower hemisphere 12 is connected with a Ball bracket17.

The pipe busbar fittings 20 of the utility model include a pair of arched half-rings 21 for clamping the pipe busbar 2, and the two side walls of each arched half-ring 21 have recessed holes for connecting another arched half-ring 21 through bolts. half ring 21.

The wire fixing hardware 30 of the present invention includes a flow plate 31, and the flow plate 31 is respectively connected with six independent wire clamps 32 through bolts as a whole.

The club fixing chassis 40 of the present utility model comprises a T frame body 41, the bottom end of the T frame body 41 is connected on the pillar insulator 1, and the top end of the T frame body 41 is connected to the pipe bus fitting 20 through a ball joint 42, and then the The pipe bus bar fitting 20 can rotate 360° around the pipe bus bar 2 on the club fixing chassis 40, and the side end of the T frame body 41 is connected to the flow plate 31 of the wire fixing fitting 30 by welding.

The bottom of the static contact support frame 50 of the utility model is connected to the flange plate 3 on the upper end of the pillar insulator 1 by bolts, and the static contact support frame 50 is fixedly connected to a ground knife static contact 4 for leading out discharge by bolts, and the ground The large port of the static knife contact 4 is placed in the side port 14 of the anti-dizziness ball 10 .

There are several current-carrying wires 60 of the present utility model, one end of each current-carrying wire 60 is in contact with one of the cables in the pipe busbar 2 of the pipe busbar fitting 20 for over-current welding, and the other end of the current-carrying wire 60 One end is in contact with the corresponding position of the flow plate 31 of the wire fixing hardware 30 for overcurrent welding.

In the above-mentioned embodiments, each ball bracket 17 is made by bending a high-strength aluminum alloy plate. Each ball bracket 17 is connected to the flange 3 of the post insulator 1 .

In the above embodiments, the anti-sickness ball 10 , the ball bracket 17 , the club fixing chassis 40 and the static contact support frame 50 are all insulators. The bus bar fittings 20, the current-carrying wires 60 and the wire fixing fittings 30 are all conductors of the overcurrent path.

In the above embodiment, the outer surface of the anti-halation ball 10 is polished and polished to ensure its smoothness, and the side ports 13, 14, bottom port 15 and top port 16 provided by the anti-halation ball 10 are not in contact with the pipe busbar fittings 20 and the pipe busbar 2. 1. The wire fixing fitting 30 is in contact with the post insulator 1, and the opening edges of the side openings 13, 14, bottom opening 15 and top opening 16 of the anti-halation ball 10 are respectively bent to the inside of the anti-halation ball 10 to prevent haloing. The angle between the central extension line between the port 13 and the side port 14 is set according to the installation site, so as to meet the safety requirements of the wall bushing and discharge operation.

As shown in Figure 1 and Figure 2, when the utility model is connected and used:

1) Connect one end of each ball bracket 17 to the inner wall of the upper port of the lower hemisphere 12;

2) Insert the post insulator 1 upwards from the bottom opening 15 of the anti-corona ball 10 and place it in the middle of the lower hemisphere 12, and connect the end of the post insulator 1 to the flange 3, and then connect with the other end of each ball bracket 17 fixed connection respectively;

3) Connect the club fixing chassis 40 to the flange 3 of the post insulator 1 through bolts, and then connect the top of the club fixing chassis 40 to a ball hinge 42;

4) Connect the bottom of the static contact support frame 50 to the flange plate 3 of the post insulator 1, and then fix one end of the ground knife static contact 4 used to lead out the discharge to the static contact support frame 50 by bolts, and the ground knife The large port of the static contact 4 is placed in the side port 14 of the anti-halo ball 10;

5) Clamp the two arched semi-rings 21 of the pipe bus fitting 20 on the pipe bus 2, place it on the top port 16 of the anti-halo ball 10, and fix the chassis 40 with the club through the ball tie 42 in a ball tie connection Bottom connection, so that the pipe bus fitting 20 can rotate 360° around the pipe bus 2;

6) Fix and connect the six independent wire clamps 32 of the wire fixing hardware 30 to the ends of each wire 5 respectively;

7) Solder the two ends of each of the current-carrying wires 60 on the bus bar fitting 20 and the overcurrent plate 31 of the wire fixing fitting 30 through contact and overcurrent welding;

8) The upper and lower hemispheres 11 and 12 are connected together through bolts.

The above-mentioned embodiments are only used to illustrate the utility model, wherein the structure and connection mode of each component can be changed, and any equivalent transformation and improvement carried out on the basis of the technical solution of the utility model should not be excluded. Outside the scope of protection of the present utility model.

Claims (7)

1. A ground knife static contact fitting for the low-end valve hall of an 800kV converter station, which is characterized in that it includes an anti-dizzy ball, a busbar fitting, a wire fixing fitting, a ball rod fixing chassis, and a static contact Support frame and several current-carrying wires; The anti-halo ball is a shell formed by connecting the upper hemisphere and the lower hemisphere, and the side wall of the shell is provided with two side openings at intervals, one of which is used to pass through the wire fixing hardware, and the other The side port is used for piercing and exporting discharge equipment; the bottom of the lower hemisphere of the housing is provided with a bottom port for piercing the post insulator, and the top of the upper hemisphere of the housing is provided with a bottom port for piercing the pipe busbar The top opening of the fitting is connected with a ball bracket on the edge of the top opening of the lower hemisphere; The pipe busbar fittings include a pair of arched half-rings for clamping pipe busbars, and the two side walls of each arched half-ring respectively have a recessed hole for connecting another arched half-ring through bolts; The wire fixing hardware includes a flow plate, and the flow plate is respectively connected with six independent wire clamps through bolts; The club fixing chassis includes a T frame body, the bottom end of the T frame body is connected to the post insulator, and the top end of the T frame body is connected to the pipe busbar fittings through a ball joint, so that the pipe bus The busbar fittings can rotate 360° around the pipe busbar on the club fixing chassis, and the side ends of the T frame body are connected to the flow plate of the wire fixing fittings by welding; The bottom of the static contact support frame is connected to the flange on the upper end of the post insulator by bolts, and the static contact support frame is fixedly connected to a ground knife static contact for leading out discharge by bolts, and the ground knife The large port of the static contact is placed in the side port of the anti-halo ball; There are several current-carrying wires, one end of each current-carrying wire is in contact with one of the cables in the pipe busbar of the inner clamp of the pipe busbar fitting for over-current welding, and the other end of the current-carrying wire is It is in contact with the corresponding position of the overcurrent plate of the wire fixing hardware for overcurrent welding. 2. The ground knife static contact fittings for the low-end valve hall of the 800kV converter station as claimed in claim 1, characterized in that: each of the ball brackets is bent from an aluminum alloy plate, and each of the ball brackets All are connected with the flange of the post insulator. 3. The ground knife static contact fitting for the low-end valve hall of the 800kV converter station according to claim 1, characterized in that: the anti-halo ball, the ball bracket, the ball rod fixing chassis and the static contact The head supports are insulators. 4. The ground knife static contact fittings for the low-end valve hall of the 800kV converter station according to claim 1, characterized in that: the busbar fittings, the current-carrying wires and the wire fixing fittings are all overcurrent paths conductor. 5. The ground knife static contact fitting for the low-end valve hall of the 800kV converter station according to claim 1 or 2 or 3 or 4, characterized in that: the outer surface of the anti-halation ball is polished and polished to ensure its smoothness, The openings on both sides, the bottom and the top of the anti-halation ball are not in contact with the fittings for the bus bar, the bus bar, the fittings for fixing the wires and the post insulator. 6. The ground knife static contact fitting for the low-end valve hall of the 800kV converter station according to claim 1 or 2 or 3 or 4, characterized in that: the angle between the centers of the two sides of the anti-halation ball is greater than 90°, The opening edges of the two side openings, the bottom opening and the top opening of the anti-sickness ball are respectively bent towards the inside of the anti-sickness ball. 7. The ground knife static contact fitting for the low-end valve hall of the 800kV converter station as claimed in claim 5, characterized in that: the angle between the center of the two sides of the anti-halo ball is greater than 90°, and the anti-halo ball The opening edges of the two side openings, the bottom opening and the top opening are respectively bent towards the inside of the anti-sickness ball.

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