CN206293812U - An electrical connection structure and gas-insulated metal-enclosed switchgear - Google Patents

Abstract

The utility model is related to a kind of electric connection structure and Cubicle Gas-Insulated Switchgear.Conducting rod and insulating sleeve in the interphase of the Cubicle Gas-Insulated Switchgear in the utility model are vertically arranged, conducting rod in two side phases and the axis one end residing for insulating sleeve overlap with the axis of rotation of insulator, the other end is inclined upwardly to the side away from interphase, with the axis of rotation of insulator into set angle, two leading-out terminals of side phase are made just to be overhang on the direction away from interphase, increase the insulation distance between three-phase, thus the leading-out terminal on the casing of switchgear can be set less spacing distance, reduce the volume of Cubicle Gas-Insulated Switchgear.

Description

An electrical connection structure and gas-insulated metal-enclosed switchgear

technical field

The utility model relates to an electric connection structure and a gas-insulated metal-enclosed switchgear.

Background technique

At present, 40.5kV outdoor gas-insulated metal-enclosed switchgear has two commonly used ways of incoming and outgoing lines, one is cable entry and exit, and the other is overhead entry and exit. The way of cable entry and exit is generally in the form of bottom entry and bottom exit, which is safe and reliable, but the cost of cables is high, and it is necessary to dig cable trenches or install cable supports. When it is inconvenient to make a cable trench on the installation site or when two sets of cabinets are arranged facing each other, the overhead line entry and exit method is often used.

In the existing switchgear adopting the way of overhead incoming and outgoing lines, the three-phase line is connected to the switchgear through an electrical connection structure, and the electrical connection structure includes an insulator and a conductive rod arranged on the insulator. The three-phase lines are arranged parallel to each other and vertically on the equipment box, and a large distance needs to be set between the three-phase lines to make the insulation distance between the three-phase lines meet the requirements, but this requires the box of the switchgear to have Larger size is used to set the outlet terminal connected to the three-phase line, which causes the problem of large volume of the switchgear.

Utility model content

The purpose of the utility model is to provide a gas-insulated metal-enclosed switchgear with small volume; at the same time, the utility model also provides an electrical connection structure.

In order to achieve the above object, the technical solution of the electrical connection structure of the present utility model is: the electrical connection structure includes an insulator of a rotary structure, a conductive rod is embedded in the middle of the insulator, and the axis of one end of the conductive rod and the rotation of the insulator The axes are coincident, and the axis at the other end is inclined at a set angle with the rotation axis of the insulator.

The set angle is 20°-40°.

The insulator is a disc insulator, and the disc insulator is embedded with connecting inserts, and the connecting inserts are evenly distributed on the outer periphery of the disc insulator.

A threaded hole for connecting with a suitable conductive rod is provided on the end surface of the inclined end of the conductive rod.

The technical solution of the gas-insulated metal-enclosed switchgear of the utility model is: the gas-insulated metal-enclosed switchgear includes an equipment box with three outlets, and the three outlets are distributed on the equipment box in the shape of "one" , the three outlets are provided with an electrical connection structure, the electrical connection structure includes a rotary insulator, the insulator is embedded with a conductive rod, the insulator is connected with an insulating sleeve coaxially arranged with the conductive rod, and the intermediate phase outlet terminal The conductive rods and insulating sleeves in the electrical connection structure are arranged vertically. One end of the axes of the conductive rods and insulating sleeves in the electrical connection structure of the two side phases coincides with the rotation axis of the insulator, and the other end faces away from the middle. The phase direction is inclined at a set angle with the axis of rotation of the insulator.

The axes of the insulating bushings in the electrical connection structures on the three phases are on the same plane.

The set angle is 20°-40°.

The insulator is a disc insulator, and the disc insulator is embedded with connecting inserts, and the connecting inserts are evenly distributed on the outer periphery of the disc insulator.

A threaded hole for connecting with a suitable conductive rod is provided on the end surface of the inclined end of the conductive rod.

The beneficial effects of the utility model are: the conductive rod and the insulating bushing on the intermediate phase of the gas-insulated metal-enclosed switchgear in the utility model are vertically arranged, and the axes where the conductive rod and the insulating bushing on the two side phases are located One end coincides with the rotation axis of the insulator, and the other end is inclined in the direction away from the middle phase, and forms a set angle with the rotation axis of the insulator, so that the outlet ends of the two side phases are overhanging in the direction away from the middle phase, increasing The insulation distance between the three phases is improved, so that the outlet terminals on the box of the switchgear can be set at a smaller distance, so that the volume of the gas-insulated metal-enclosed switchgear can be reduced.

Description of drawings

Fig. 1 is a structural schematic diagram of a gas-insulated metal-enclosed switchgear of the present invention;

Fig. 2 is a structural schematic diagram of the electrical connection structure in Fig. 1;

Fig. 3 is a bottom view of Fig. 2 .

detailed description

Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

The specific embodiment of the gas-insulated metal-enclosed switchgear of the present utility model is shown in Fig. 1 to Fig. 3. The gas-insulated metal-enclosed switchgear includes an equipment box 4, and a three-position switch 5 is arranged in the equipment box. There are three outlet terminals connected with the three-position switch 5, and the three outlet terminals are distributed on the equipment box 4 in the shape of "one", and the three outlet terminals are connected with a three-phase line outlet structure, which are the middle phase The outlet structure 2, the left phase outlet structure 3 and the right phase outlet structure 1, each outlet structure includes an electrical connection structure, the middle phase adopts a common electrical connection structure, and the side phase electrical connector structure 6 on the right phase includes a disc insulator 61, The disc insulator 61 is casted with epoxy resin, and the conductive rod 62 and the connecting insert 63 are integrally cast and embedded in the disc insulator 61. The conductive rod 62 is located in the middle of the disc insulator 61, and there are 8 connecting inserts 63 , and evenly distributed on the position near the outer circumference of the disc insulator 61, for fixed connection to the four-way cylinder of the three-position switch. The overhanging end of the conductive rod 62 is connected with a wiring board 7, and the wiring board 7 is used for connecting overhead lines.

The axis of the connection end 622 of the conductive rod 62 connected to the disc insulator 61 coincides with the axis of the disc insulator, and the axis of the overhang end 621 is inclined at 30° to the axis of the disc insulator. The threaded hole 623 for connecting with the matching conductive base. The disc insulator 61 is connected with an outlet sleeve 64 through a connecting insert 63, and the outlet sleeve 64 is coaxially arranged with the conductive rod 62 in the disc insulator, so that the outlet sleeve and the conductive rod are bent to one side. There is also a side-phase electrical connection structure on the left phase 3, the difference is that the inclination direction of the electrical connection structure on the left phase is opposite to that of the conductive rod in the electrical connection structure on the right phase, and the outlet bushings on the two side phases pass through After the connecting sleeve is connected to the disc insulator, it is overhanging on both sides away from the middle phase, and is on the same plane as the insulating sleeve in the middle phase, so that the insulation distance between the ends of the three-phase outlet structure is increased. . Therefore, it is possible to set a smaller distance between the outlet terminals on the box body of the switchgear, so that the volume of the gas-insulated metal-enclosed switchgear can be reduced.

In other embodiments of the present utility model, the inclination angle of the cantilevered end of the conductive rod can be any angle from 20° to 40°; the disc insulator can also be a pot insulator or an insulator with other rotary structures.

Claims (9)

1. the insulator of electric connection structure, including revolving structure, conducting rod is embedded with the middle part of the insulator, and its feature exists In：The axis of one end of conducting rod is overlapped with the axis of rotation of the insulator, and the axis of the other end is returned with the insulator Shaft axis are inclined to set angle.

2. electric connection structure according to claim 1, it is characterised in that：The set angle is 20 ° ~ 40 °.

3. electric connection structure according to claim 1, it is characterised in that：The insulator is disk insulator, and disc type is exhausted Connection inserting part is embedded with edge, the connection inserting part is evenly distributed at the periphery of the disk insulator.

4. the electric connection structure according to any one of claim 1 ~ 3, it is characterised in that：The end of the beveled end of the conducting rod Face is provided with the screwed hole being connected for the conducting rod with adaptation.

5. Cubicle Gas-Insulated Switchgear, including three equipment box of leading-out terminal are provided with, three leading-out terminals are in " one " Font is distributed on the equipment box, and three leading-out terminals are provided with electric connection structure, and electric connection structure includes revolving structure Insulator, is embedded with conducting rod on the insulator, the insulating sleeve being coaxially disposed with conducting rod is connected with insulator, and it is special Levy and be：Conducting rod and insulating sleeve in the electric connection structure of interphase leading-out terminal are vertically arranged, two electrical connections of side phase Axis one end residing for conducting rod and insulating sleeve in structure overlaps with the axis of rotation of the insulator, and the other end is to deviating from The side of interphase is inclined upwardly, with the axis of rotation of the insulator into set angle.

6. Cubicle Gas-Insulated Switchgear according to claim 5, it is characterised in that：The binding that is electrically connected on three-phase The axis of the insulating sleeve in structure is in the same plane.

7. Cubicle Gas-Insulated Switchgear according to claim 6, it is characterised in that：The set angle is 20°~40°。

8. Cubicle Gas-Insulated Switchgear according to claim 5, it is characterised in that：The insulator is disc type Insulator, is embedded with connection inserting part on disk insulator, the connection inserting part is evenly distributed on the periphery of the disk insulator Place.

9. the Cubicle Gas-Insulated Switchgear according to any one of claim 5 ~ 8, it is characterised in that：The conduction The end face of the beveled end of bar is provided with the screwed hole being connected for the conducting rod with adaptation.