CN205178426U - A wear wall insulating barrier for case enclosed bus - Google Patents

Abstract

The utility model relates to a wear wall insulating barrier for case enclosed bus, wear wall insulating barrier and adopt the SMC insulation board, the SMC insulation board adopts rectangular plate or cross shaped plate, set up a plurality of conductor holes on the SMC insulation board. Follow in the conductor hole the even interval of length direction of SMC insulation board sets up, and each the conductor hole all is located on the axis of SMC insulation board. The utility model discloses wearing wall insulating barrier and adopting the SMC insulation board, compare with the epoxy plate, the SMC insulation board has stronger insulating nature and hydroscopicity, can reduce common case enclosed bus effectively and wear the flashover accident that wall insulating barrier department appears to guarantee unit safety, move reliably. Additionally, the low -voltage breaker buckle -releasing apparatus with the reinforced insulation of the utility model is simple in structure and convenient to install.

Description

A wall-penetrating insulating partition for a common-box enclosed busbar

technical field

The utility model relates to the technical field of electric power equipment, in particular to a wall-penetrating insulating partition used for a common box-enclosed busbar.

Background technique

Common box closed busbar is an important conductive part for power transmission. It is composed of three-phase busbar conductors enclosed in a metal box. It is widely used between the generator lead-out line of 100MW and the low-voltage side of the main transformer or the factory transformer of 75MW and above units. Current transfer between the low-voltage side and the high-voltage distribution unit. The rated voltage of the closed bus in the common box is usually 6-10kV, and the rated current is usually 1000-5000A.

The direction of the enclosed busbars in the common box is usually arranged from indoors to outdoors. It is necessary to go through the wall of the factory building from indoor to outdoor. The wall of the factory building is the confluence of cold and hot air, which is easy to generate moisture. In addition, due to fire prevention reasons, partition measures must be taken at the wall passages of the closed busbars in the common box. In order to solve the above-mentioned problems, wall-through insulating partitions are often used at present.

In the prior art, the wall-penetrating insulating partitions are all made of epoxy board materials. Epoxy board materials have been widely used in my country since the 1960s and 1970s. They have good insulation performance and mechanical strength, and have certain fire resistance. And high temperature resistance, but its moisture resistance is poor, and it is easy to absorb moisture after aging and cause damage to electrical components. Therefore, in recent years, most of the flashover accidents of varying degrees in many power plants occurred at the insulating partitions through the walls. Equipment failure has seriously affected the safe and reliable operation of the unit.

Utility model content

In order to solve the above-mentioned problems in the prior art, the utility model provides a wall-penetrating insulating partition for a common-box closed busbar, which is beneficial to reducing flashover accidents of the common-box closed busbar.

In order to achieve the above object, the utility model adopts the following technical solutions: a wall-penetrating insulating partition for a common box closed bus adopts an SMC insulating board, and the SMC insulating board adopts a rectangular board or a cross-shaped board, and the SMC insulating board A number of conductor holes are provided on the top.

Further, the conductor holes are evenly spaced along the length direction of the SMC insulation board, and each conductor hole is located on the central axis of the SMC insulation board.

Further, the conductor hole is a circular hole or a square hole.

Further, several screw holes are provided on both sides of the rectangular SMC insulation board.

Further, the thickness of the SMC insulation board is 10mm-15mm.

Due to the adoption of the above technical scheme, the utility model has the following advantages: the utility model adopts the SMC insulation board for the wall-penetrating insulation partition. Compared with the epoxy board, the SMC insulation board has stronger insulation and water absorption, and can effectively Reduce the flashover accidents of the closed busbar in the common box at the insulating partition through the wall, so as to ensure the safe and reliable operation of the unit. In addition, the utility model also has the advantages of simple structure and convenient installation.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model for the through-the-wall insulating partition of the enclosed bus bar of common box;

Fig. 2 is another schematic diagram of the structure of the wall-penetrating insulating partition used for the common box closed busbar of the present invention.

In the figure: 1. SMC insulation board; 2. Conductor hole; 3. Screw hole.

detailed description

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 provides a kind of wall-penetrating insulating partition for the closed bus bar of the common box, which adopts SMC (Sheet Molding Compound, sheet molding compound) insulating board 1, and the SMC insulating board 1 is provided with Several conductor holes 2 . The SMC insulating board 1 can be a rectangular board or a cross-shaped board. Further, the conductor holes 2 are evenly spaced along the length direction of the SMC insulation board 1 , and each conductor hole 2 is located on the central axis of the SMC insulation board 1 .

As shown in Figure 1 and Figure 2, according to the different shapes of bus conductors in the closed bus of the common box, the conductor hole 2 adopts holes of different shapes. When the conductor of the busbar in the closed busbar of the common box adopts a copper tube or an aluminum alloy tube, the conductor hole 2 adopts a circular hole. When copper-aluminum busbars are used for the busbar conductors in the closed busbar of the common box, the conductor hole 2 shall be a square hole. When the busbar conductor is a copper-aluminum busbar, a matching wall bushing is provided at the conductor hole 2, and the copper-aluminum busbar passes through the wall bushing and the wall insulation partition in turn. This installation method can greatly increase the three The insulation distance between the phase conductors can effectively reduce the flashover accidents of the closed busbar in the common box at the insulation partition through the wall, and ensure the safe and reliable operation of the unit.

As shown in Figure 1 and Figure 2, in order to facilitate fixed installation, a number of screw holes 3 are provided on both sides of the rectangular SMC insulating board 1.

The utility model uses SMC insulation board 1 for the wall-penetrating insulation partition used for the closed busbar of the common box. Compared with the epoxy board, the SMC insulation board 1 is slightly lower than the epoxy board in strength and bending resistance, and the SMC insulation board 1 insulation and water absorption are much higher than epoxy board. From the perspective of the electrical performance of the wall insulation partition, it is very important to improve the insulation performance of the wall insulation partition and reduce the moisture absorption index of the wall insulation partition. The strength of the wall-through insulation partition can be improved by appropriately increasing the thickness of the SMC insulation board 1 .

In the above-mentioned embodiments, in order to improve the strength of the wall-penetrating insulating partition, the thickness of the SMC insulating board 1 is 10mm-15mm.

The utility model is not limited to the above-mentioned best implementation mode, anyone can draw other various forms of products under the enlightenment of the utility model, but no matter make any changes in its shape or structure, all have the same features as the application Or similar technical schemes all fall within the protection scope of the present utility model.

Claims (5)

1. for a wall isolation dividing plate for common case enclosed busbar, it is characterized in that: described wall isolation dividing plate adopts SMC insulation board, described SMC insulation board adopts rectangular slab or cross plate, and described SMC insulation board offers some conductor bores.

2. a kind of wall isolation dividing plate for common case enclosed busbar as claimed in claim 1, is characterized in that: described conductor bores is arranged along the length direction uniform intervals of described SMC insulation board, and each described conductor bores is all positioned on the axis of described SMC insulation board.

3. a kind of wall isolation dividing plate for common case enclosed busbar as claimed in claim 1 or 2, is characterized in that: described conductor bores adopts circular port or square opening.

4. a kind of wall isolation dividing plate for common case enclosed busbar as claimed in claim 1 or 2, is characterized in that: some screws are offered in the both sides of described rectangle SMC insulation board.

5. a kind of wall isolation dividing plate for common case enclosed busbar as claimed in claim 1 or 2, is characterized in that: the thickness of described SMC insulation board adopts 10mm ~ 15mm.