Detachable bus assembly unit structure of 126 kV combined electric appliance

Abstract

The utility model relates to a detachable bus assembly unit structure of a 126kV combined electric appliance. The detachable bus assembly unit structure mainly comprises a shell, an insulating mounting plate, a cover plate, a contact seat, a conducting rod and a connecting conductor, a positive electrode connecting device and a negative electrode connecting device are installed in the shell and are the same in structure. The positive electrode connecting device is of a three-way structure and comprises a U-shaped connecting conductor, three faces of the U-shaped connecting conductor are connected with conducting rods respectively, the tail end of a first conducting rod is connected with a voltage transformer through a contact seat, the tail end of a second conducting rod is connected with a lightning arrester through a contact seat, and the tail end of a third conducting rod is connected with an isolation grounding switch through a conducting piece. The positions of the voltage transformer, the lightning arrester and the isolation grounding switch can be interchanged. The three insulator butt joint surfaces are respectively connected with the isolation grounding switch, the lightning arrester and the voltage transformer, installation of various structure types can be realized, the structure is simple, the processing is convenient, the cost is low, the standardization of products is improved, and reliable operation of high-voltage switch equipment is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of 126kV combined electrical apparatus dismountable busbar assembly unit structure for multiple structure types, belong to the part of combined electrical apparatus, belong to the part of SF6 gas insulation metal-enclosed switchgear (GIS). BACKGROUND

[0002] At present, 126kV combined electrical apparatus dismountable busbar assembly unit generally uses casting, complex structure, not suitable for the installation of multiple structure types, and material cost is high. SUMMARY

[0003] The utility model provides a kind of 126kV combined electrical apparatus dismountable busbar assembly unit structure with simple structure, reliable performance to make up for the deficiency of prior art.

[0004] The utility model is realized by the following technical solutions:

[0005] A kind of 126kV combined electrical apparatus dismountable busbar assembly unit structure, mainly by shell, insulation mounting plate, cover plate, contact seat, conducting rod, connecting conductor;

[0006] Positive connection device and negative connection device are installed in shell, and the structure of both is same;

[0007] Positive connection device is tee structure, including U-shaped connecting conductor, three faces thereof are connected with conducting rod respectively, first conducting rod end is connected with voltage transformer through contact seat, second conducting rod end is connected with surge arrester through contact seat, and third conducting rod end is connected with isolation grounding switch through conducting piece, and the position of voltage transformer, surge arrester and isolation grounding switch can be interchanged.

[0008] Further preferably, U-shaped connecting conductor is connected with conducting rod by bolt respectively.

[0009] Further preferably, guide ring and spring contact finger are installed in annular groove of contact seat inner hole, for conducting rod insertion and mutual conduction.

[0010] Further preferably, three faces of shell are installed with insulation mounting plate by bolt and sealing ring, and one face is installed with cover plate by bolt and sealing ring;Contact seat and conducting piece are installed at the insulation mounting plate of shell, and cover plate is drum cover plate welded by outer ring aluminum flange and middle aluminum plate.

[0011] Further preferably, conducting rod is processed using aluminum bar with diameter of 35mm, contact seat is processed using aluminum bar with diameter of 80mm, connecting conductor is welded and processed using aluminum plate with 20mm, and cover plate is drum cover plate welded by outer ring 30mm aluminum flange and middle 12mm aluminum plate, the material used by whole is reduced, processing is facilitated, and cost is reduced.

[0012] The utility model discloses a beneficial effect is, its three insulation mounting plate (insulator) butt joint surface connects isolation ground switch, lightning arrester and voltage transformer respectively, can realize the installation of multiple structure types, and its simple structure is convenient for processing, and low in cost improves the standardization of product, is favorable to the reliable operation of high voltage switchgear. This design is mainly applied to the combined electrical apparatus of 126kV voltage grade. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the first 126kV combined electrical apparatus detachable busbar assembly unit structure schematic diagram.

[0014] Figure 2 It is the second 126kV combined electrical apparatus detachable busbar assembly unit structure schematic diagram.

[0015] Figure 3 It is Figure 2 Partial enlarged schematic view.

[0016] 1 shell, 2 insulation mounting plate, 3 cover plate, 4 contact seat, 5 fixed bolt, 6 conducting rod, 7 connecting conductor, 8 guide ring, 9 spring contact finger, 10 sealing ring. 11 voltage transformer, 12 lightning arrester, 13 conducting piece, 14 isolation ground switch. DETAILED DESCRIPTION

[0017] The drawing is one specific embodiment of the utility model.

[0018] The utility model discloses a 126kV combined electrical apparatus detachable busbar assembly unit, mainly including shell 1, insulation mounting plate 2, cover plate 3, contact seat 4, conducting rod 6, connecting conductor 7;

[0019] The positive connection device and the negative connection device are installed in the shell 1, and the two structures are same;

[0020] The positive connection device is three-way structure, including U-shaped connecting conductor 7, and three surfaces of the U-shaped connecting conductor 7 are connected with the conducting rod 6 respectively, the first conducting rod end is connected with the voltage transformer 11 through the contact seat 4, the second conducting rod end is connected with the lightning arrester 12 through the contact seat 4, and the third conducting rod end is connected with the isolation ground switch 14 through the conducting piece 13, and the positions of the voltage transformer, the lightning arrester and the isolation ground switch can be interchanged.

[0021] The U-shaped connecting conductor 7 is connected with the conducting rod 6 through bolt 5 respectively.

[0022] The guide ring 8 and the spring contact finger 9 are installed in the annular groove in the inner hole of the contact seat 4, which is used for inserting the conducting rod and conducting each other.

[0023] Three surfaces of the shell are mounted with the insulating mounting plate 2 through bolts and sealing rings, and one surface is mounted with the cover plate 3 through bolts and sealing rings 10; the contact seat 4 and the conductive part 13 are mounted at the insulating mounting plate 2 of the shell, and the cover plate is a drum cover plate welded by an outer ring aluminum flange and a middle aluminum plate.

[0024] The conductive rod is processed by using an aluminum rod with a diameter of 35mm, the contact seat is processed by using an aluminum rod with a diameter of 80mm, the connecting conductor is processed by welding an aluminum plate with a diameter of 20mm, and the cover plate is changed from a flat cover plate with a thickness of 30mm to a drum cover plate welded by an outer ring aluminum flange with a diameter of 30mm and a middle aluminum plate with a thickness of 12mm.

[0025] The input end interface of the isolation grounding switch is connected with the power supply.

[0026] The 126kV combined electric appliance detachable busbar assembly unit is part of SF6 gas insulated metal enclosed switchgear (GIS), three insulating mounting plates (insulators) butt joint surfaces are connected with isolation grounding switch, lightning arrester and voltage transformer, can realize installation of various structure types, simple structure, convenient processing, low cost, improve product standardization, conducive to reliable operation of high voltage switchgear.

Claims

1. A 126 kV combined electrical apparatus detachable busbar assembly unit structure, characterized by: The shell, the insulating mounting plate, the cover plate, the contact seat, the conductive rod and the connecting conductor are included. The positive connection device and the negative connection device are installed in the shell and have the same structure. The positive connection device has a three-way structure and includes a U-shaped connecting conductor, three surfaces of which are connected with the conductive rods respectively, the first conductive rod is connected with the voltage transformer through the contact seat at the end, the second conductive rod is connected with the lightning arrester through the contact seat at the end, and the third conductive rod is connected with the isolation grounding switch through the conductive part at the end.

2. The 126 kV combined electrical apparatus detachable bus assembly unit structure according to claim 1, characterized by: The U-shaped connecting conductor is connected with the conductive rods through bolts respectively.

3. The 126 kV combined electrical apparatus detachable busbar assembly unit structure according to claim 1 or 2, characterized in that: The guiding ring and the spring contact finger are installed in the annular groove of the inner hole of the contact seat, which are used for inserting the conductive rods and conducting electricity with each other.

4. The 126 kV combined electrical apparatus detachable bus assembly unit structure according to claim 1 or 2, characterized in that: The three surfaces of the shell are connected with the insulating mounting plate through bolts and sealing rings, and one surface is connected with the cover plate through bolts and sealing rings; the contact seat and the conductive part are installed at the insulating mounting plate of the shell, and the cover plate is a drum cover plate which is welded by the outer ring aluminum flange and the middle aluminum plate.

5. The 126 kV combined electrical apparatus detachable bus assembly unit structure according to claim 1 or 2, characterized by: The conductive rod is processed by using the aluminum rod with a diameter of 35mm, the contact seat is processed by using the aluminum rod with a diameter of 80mm, the connecting conductor is processed by welding the aluminum plate with a diameter of 20mm, and the cover plate is a drum cover plate which is welded by the outer ring 30mm aluminum flange and the middle 12mm aluminum plate.

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