CN202333678U - Conductive device for supporting type tubular bus and earthed switch in high-voltage distribution - Google Patents

Abstract

The utility model provides a conductive flexible connection device between a supporting type tubular bus and an earthed switch in a high-voltage distribution device. The conductive flexible connection device comprises a tubular bus clamp and a flexible metal strip, wherein one end of the flexible metal strip is fixedly connected with the tubular bus clamp through a conductive block and the other end of the flexible metal strip is provided with a conductive connection plate which is fixedly connected with a wiring board of the earthed switch. The conductive flexible connection device between the supporting type tubular bus and the earthed switch in the high-voltage distribution device, provided by the utility model, is simple in structure, low in cost and convenient to mount; the upper end of the conductive flexible connection device is connected with the tubular bus through the tubular bus clamp in a clamped manner and the lower end of the conductive flexible connection device is connected with the wiring board of the earthed switch through a bolt; the whole device is a conductive body so that the connection is reliable and the conduction is smooth; and the flexible metal strip is arranged at the part for connecting the tubular bus clamp with the wiring board of the earthed switch, so that the conductive flexible connection device can be adapted to the bus to be freely retracted, the safety performance is high and the practical applicability is strong.

Description

Conductive devices for supported tubular busbars and earthing switches in high voltage power distribution

technical field

The utility model relates to a conductive connection device in a high-voltage power distribution device, in particular to a conductive connection device used for connecting a supporting tubular busbar and a busbar grounding switch in a high-voltage power distribution device.

Background technique

In the substation, the high-voltage power distribution device mainly plays the role of transmitting and distributing electric energy. The busbars used in the power distribution device mainly include soft busbars, suspended tubular busbars, and supported tubular busbars. Among them, for the arrangement of supported tubular busbars, the installation of the busbar grounding switch is to arrange the busbar grounding switch at the lower part of the busbar, and the main body is also used as the support of the busbar. At the top (there is also a way to fix it by the support arm), the tubular busbar passes through the tubular busbar clamp. For a long time, it has been a common practice to use the pipe busbar clamps that also serve as busbar support as a conductive drainage device, but since the busbar is allowed to slide along the axis to accommodate the temperature effect of the busbar; especially in recent years, in order to strengthen the busbar along the axis direction The degree of freedom of expansion and contraction is generally installed on the grounding switch. The connection between the busbar and the grounding switch is contacted by a bolt sliding in the chute, which is not a reliable connection, and its conductivity will be affected. It will bring great potential danger to the operators during the construction and maintenance process. Therefore, there is an urgent need to install a device on the busbar to ensure that the high-voltage tubular busbar can be reliably grounded during construction and maintenance, and to provide a safe working condition for maintenance and construction personnel.

Contents of the invention

The purpose of this utility model is to provide a support type busbar and grounding switch used in high-voltage power distribution devices that can not only ensure reliable connection, smooth conduction, but also adapt to the free expansion and contraction of the busbar in view of the shortcomings of the existing technology. Conductive connection device.

The conductive device for supporting tubular busbars and grounding switches in high-voltage power distribution includes tubular busbar clamps and flexible metal strips, one end of the flexible metal strips is fixedly connected to the tubular busbar clamps through a conductive block, and the other end is provided with a tubular busbar clamp. There is a conductive connection plate fixedly connected to the earthing switch terminal plate.

The tubular bus bar clamp is composed of upper and lower semicircular clamps, the fixed ends of the upper and lower semicircular clamps are connected by hinges, and the clamping ends are connected by bolts to form a circular clamp shape; the flexible metal belt passes through The conductive block is connected with the fixed end of the tubular busbar clamp.

The conductive block is a metal block, and the conductive block is welded with the tubular busbar clamp, and a protective cover is provided outside the conductive block.

The flexible metal is an aluminum braid.

The conductive connecting plate is a metal plate, and a screw hole is provided on its upper part to facilitate the connection with the grounding switch terminal plate with bolts.

The inner diameter of the circular tubular busbar clamp is the same as the outer diameter of the supported tubular busbar. In terms of tolerance fit, the former can be slightly larger than the latter by 1mm.

The utility model has the advantages of simple structure, low cost and convenient installation. The upper end is clamped and connected with the tubular busbar by the tubular busbar clamp, and the lower end is connected with the grounding switch wiring board by bolts. The whole device is a conductor, which can ensure reliable connection. Conduction is unobstructed, and there is a flexible metal belt at the connection part of the tubular busbar clamp and the grounding switch, which can adapt to the free expansion and contraction of the busbar, and has high safety performance.

Description of drawings

Fig. 1 is a structural representation of the utility model,

Fig. 2 is a structural schematic diagram of the utility model connected with the tubular busbar,

Fig. 3 is the use state figure of the utility model,

Fig. 4 is a sectional view along AA of Fig. 3 ,

Fig. 5 is a BB sectional view of Fig. 3 .

In the figure: 1-Tubular bus bar clamp, 1-1, 1-2-Upper and lower semicircular clamps, 2-Flexible metal strip, 3-Conductive block, 4-Earth switch, 5-Conductive connecting plate, 5 -1-screw hole, 6-bolt, 7-protective cover, 8-tube busbar, 9-grounding switch terminal board, 10-existing tube female sliding clamp.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. In Fig. 1, 2, described a kind of conduction device that is used for support type tubular busbar and earthing switch in high-voltage power distribution comprises tubular busbar clamp 1 and flexible metal band 2, and one end of flexible metal band 2 is connected with conductive block 3 The tubular bus clamp 1 is fixedly connected, and the other end is provided with a conductive connection plate 5 fixedly connected with the grounding switch terminal plate 9 .

The tube type bus clamp 1 is composed of upper and lower semicircular tube clamps 1-1, 1-2, the fixed ends of the upper and lower semicircular tube clamps 1-1, 1-2 are connected by hinges, and the clamping ends Connected by bolts 6 to form a circular clamp; the flexible metal strip 2 is connected to the fixed end of the tubular busbar clamp 1 through the conductive block 3 .

The conductive block 3 is a metal block, and the conductive block 3 is welded with the tubular busbar clamp 1, and a protective cover 7 is provided outside the conductive block 3 to play a protective role.

The flexible metal belt 2 is an aluminum braided belt, or other metal braided belts. Due to the low cost of aluminum, the tubular busbars in the high-voltage power distribution device are generally made of aluminum alloy materials, so in order to match the tubular busbars, generally The aluminum braid is selected. The braid is made of fine wire, which is a soft conductor and can be twisted at will. It is also relatively solid and not easy to break.

The conductive connection plate 5 is a metal plate, and its upper part is provided with a screw hole 5-1 convenient to be connected with the grounding switch terminal plate 9 with bolts, so as to facilitate the installation of bolts.

The inner diameter of the circular tubular busbar clamp 1 is the same as the theoretical value of the outer diameter of the supported tubular busbar 8, and tolerances are used in manufacturing. The tubular busbar can be just clamped so that the inner wall is in close contact with the outer wall of the tubular busbar.

The utility model is used together with the existing pipe busbar clamp 10. The installation schematic diagrams are shown in Figures 3, 4 and 5. The tubular busbar 8 is clamped by the two semicircular clamps of the tubular busbar clamp 1, and then its clamping end is passed through the bolt. 6 is fixed, then the lower end of the flexible metal strip 2 is fixed on the connection plate of the grounding switch 4 by bolts, the flexible metal strip 2 is a flexible object, which can be freely bent and deformed, and can adapt to the needs of the busbar on the axis.

Conductive block 3 and conductive connecting plate 5 of the present utility model, also have other material major part and all adopt aluminum conductive material, if grounding switch 4 wiring terminals are copper material, can cover a layer on the bottom of grounding switch wiring plate 9 copper film.

Claims (6)

1. A conductive device for supporting tubular bus bars and grounding switches in high-voltage power distribution, characterized in that: the conductive device includes tubular bus clamps (1) and flexible metal strips (2), flexible metal strips ( 2) One end is fixedly connected to the tubular busbar clamp (1) through the conductive block (3), and the other end is provided with a conductive connecting plate (5) fixedly connected to the grounding switch terminal plate (9). 2. The conductive device for supporting tubular busbars and grounding switches in high-voltage power distribution according to claim 1, characterized in that: the tubular busbar clamp (1) consists of upper and lower semicircular clamps (1 -1, 1-2), the fixed ends of the upper and lower semicircular clamps (1-1, 1-2) are connected by hinges, and the clamping ends are connected by bolts (6) to form a circular clamp shape; The flexible metal strip (2) is connected to the fixed end of the tubular bus bar clamp (1) through the conductive block (3). 3. The conductive device for supporting tubular busbars and grounding switches in high-voltage power distribution according to claim 1 or 2, characterized in that: the conductive block (3) is a metal block, and the conductive block (3) and The tubular bus bar clamp (1) is welded, and a protective cover (7) is provided outside the conductive block (3). 4. The conductive device for supporting tubular busbars and grounding switches in high-voltage power distribution according to claim 1 or 2, characterized in that: the flexible metal strip (2) is an aluminum braided strip. 5. The conductive device for supporting tubular busbars and grounding switches in high-voltage power distribution according to claim 1 or 2, characterized in that: the conductive connecting plate (5) is a metal plate, and a The screw hole (5-1) is convenient for connecting with the grounding switch terminal block (9) with bolts. 6. The conductive device for supporting tubular busbar and grounding switch in high-voltage power distribution according to claim 2, characterized in that: the inner diameter of the circular tubular busbar clamp (1) is the same as that of the supporting tubular busbar (8) have the same outer diameter.

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