CN210016076U - Current short-circuit device - Google Patents

Abstract

The utility model discloses a current shorting device, which comprises a shorting sliding rail and a plurality of shorting plugs which can slide along the length direction of the shorting sliding rail, and the shorting plugs are used for electrical connection with the terminals on the terminal row. Since the shorting plug can slide freely along the length of the shorting rail, the distance between adjacent shorting connectors can be adjusted according to the distance between the terminals on the terminal block to ensure that the shorting plug and the terminal block The terminals can be effectively matched. Therefore, the current short-circuiting device can be applied to the arrangement of the CT secondary terminals in a variety of different situations, and is not only simple in structure, but also safe and reliable.

Description

A current short circuit device

technical field

The utility model relates to the technical field of power system relay protection, in particular to a current short-circuit device.

Background technique

In the process of relay protection, transformation and power transmission or other operations that need to cut off the secondary circuit of CT (Current transformer, that is, current transformer) with electricity, in order to prevent the CT secondary coil from being electrified and open circuit, a current short-circuit device needs to be used. The current short-circuit device can reliably short-circuit the CT secondary coil to ensure that the CT secondary coil does not have the risk of open circuit.

Most of the current short-circuiting devices currently used are four- or eight-pin devices. Although they can meet the arrangement of some CT secondary terminal blocks, for some old substations or substations with irregular design, there will be secondary When the AC circuit phases are far apart or cross other AC circuits in the middle, especially for the combined current that occurs in the 3/2 wiring, conventional four-plug or eight-plug devices cannot meet the requirements.

Therefore, how to adapt to the arrangement of the CT secondary terminals under various conditions is a technical problem that needs to be solved urgently by those skilled in the art.

Utility model content

In view of this, the purpose of the present invention is to provide a current short-circuiting device, which can adapt to the arrangement of CT secondary terminals under various conditions, and is not only simple in structure, but also safe and reliable.

To achieve the above object, the utility model provides the following technical solutions:

A current short-circuit device includes a short-circuit slide rail and a plurality of short-circuit plugs that can slide along the length direction of the short-circuit slide rail, and the short-circuit plugs are used for electrical connection with terminals on a terminal block.

Preferably, the shorting slide rail and the short plug connector are connected through a sliding block.

Preferably, the shorting slide rail includes a first guide rail and a second guide rail arranged in parallel, and a first baffle plate and a second baffle plate that are both perpendicular to and connected to the first guide rail and the second guide rail.

Preferably, the slider includes a first slider and a second slider;

The first slider includes a first slider body, and a first slider card disposed on the first slider body and used for contacting the upper edges of the first guide rail and the second guide rail arm;

The second slider includes a second slider body, and a second slider card disposed on the second slider body and used for contacting the lower edges of the first guide rail and the second guide rail arm;

The shorting plug is arranged on the second slider arm.

Preferably, the first sliding block is provided with a through hole for the bolt to pass through, and the second sliding block is correspondingly provided with a blind hole for the bolt to pass through.

Preferably, the inner wall of the through hole is a smooth inner wall, and the inner wall of the blind hole is provided with threads for matching with the bolts.

Preferably, it also includes an insulating casing for covering the shorting rail, the first sliding block, the second sliding block, and the bolt.

Preferably, the insulating housing includes a first insulating housing and a second insulating housing that are contoured to the shorting rail, and the first insulating housing and the second insulating housing are fixed by plugging or screwing.

Preferably, the first insulating shell and the second insulating shell are made of insulating plastics.

Preferably, the shorting rail, the first sliding block, the second sliding block, and the shorting plug are all made of conductive metal.

It can be seen from the above technical solutions that the current shorting device disclosed by the present utility model includes a shorting slide rail and a plurality of shorting plugs that can slide along the length direction of the shorting slide rail, and the shorting plugs are used to connect with the terminals. The terminals on the row are electrically connected. Since the shorting plug can slide freely along the length of the shorting rail, the distance between adjacent shorting connectors can be adjusted according to the distance between the terminals on the terminal block to ensure that the shorting plug and the terminal block The terminals can be effectively matched, so the current short-circuiting device can be applied to the arrangement of the CT secondary terminals in a variety of different situations, and is not only simple in structure, but also safe and reliable.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

1 is a schematic diagram of the overall structure of the current short-circuit device disclosed in the embodiment of the present invention;

2 is a schematic front view of the structure of the shorting plug and the slider disclosed in the embodiment of the present utility model;

3 is a schematic side view of the structure of the shorting plug and the slider disclosed in the embodiment of the present utility model;

4 is a schematic structural diagram of the current short-circuiting device when the terminals on the terminal row disclosed in the embodiment of the present utility model are in close proximity;

5 is a schematic structural diagram of the current short-circuiting device when the terminals on the terminal block are arranged at intervals according to the embodiment of the present invention.

Among them, the names of the parts are as follows:

1-shorting rail, 11-first rail, 12-second rail, 13-first baffle, 14-second baffle, 2-shorting plug, 3-terminal block, 41-first slider , 411-first slider body, 412-first slider arm, 413-through hole, 42-second slider, 421-second slider body, 422-second slider arm, 423-blind Hole, 5-bolt, 61-first insulating shell, 62-second insulating shell.

Detailed ways

In view of this, the core of the present invention is to provide a current short-circuiting device, which can be applied to the arrangement of CT secondary terminals in many different situations, and is not only simple in structure, but also safe and reliable.

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

The current shorting device disclosed in the embodiment of the present invention includes a shorting rail 1 and a plurality of shorting plugs 2 that can slide along the length direction of the shorting rail 1, and the shorting plugs 2 are used for connecting with the terminal block 3 terminals on the electrical connection. Since the shorting plug 2 can slide freely along the length direction of the shorting slide rail 1, the distance between the adjacent shorting plugs 2 can be adjusted according to the distance between the terminals on the terminal block 3, so as to ensure the shorting plug 2 and the terminals on the terminal block 3 can be effectively matched. Therefore, the current short-circuiting device can be applied to the arrangement of the CT secondary terminals in a variety of different situations, and is not only simple in structure, but also safe and reliable.

Please refer to FIG. 4 and FIG. 5 , FIG. 4 is a schematic structural diagram of the current short-circuiting device when the terminals on the terminal block disclosed in the embodiment of the present invention are in close proximity; FIG. 5 is the terminal disclosed in the embodiment of the present invention. When the terminals on the row are arranged at intervals, the structure diagram of the current short-circuiting device is used. Since the terminals on the terminal row 3 are arranged in close proximity and at intervals, the distance between the two adjacent terminals is different. Therefore, the short-circuit rail 1 The distance between adjacent shorting plugs 2 can be adjusted correspondingly with different terminal blocks 3 .

In order to ensure that the shorting connector 2 can slide smoothly on the shorting rail 1, as one of the embodiments of the present invention, a slider is also provided, and the shorting rail 1 and the shorting plug 2 are connected through the slider. The slider drives the shorting plug 2 to slide freely on the shorting rail 1 .

It should be noted that the shorting rail 1 includes a first guide rail 11 and a second guide rail 12 arranged in parallel, and a first baffle 13 and a second baffle that are perpendicular to and connected to the first guide rail 11 and the second guide rail 12 14. Among them, the first guide rail 11 and the second guide rail 12 are used to cooperate with the slider to adjust the distance between two adjacent shorting plugs 2, and the first baffle 13 and the second baffle 14 can limit the slider. bit effect.

As shown in FIG. 1 and FIG. 2, the slider includes a first slider 41 and a second slider 42; the first slider 41 includes a first slider body 411, and is disposed on the first slider body 411 and used for The first slider arm 412 in contact with the upper edges of the first guide rail 11 and the second guide rail 12; the second slider 42 includes a second slider body 421, and is disposed on the second slider body 421 and used for The second slider clamping arm 422 is in contact with the lower edges of the first guide rail 11 and the second guide rail 12 ; the shorting plug 2 is arranged on the second slider clamping arm 422 . The first slider arm 412 can drive the first slider body 411 to move on the shorting slide rail 1 , and the second slider arm 422 can drive the second slider body 421 to move on the shorting slide 1 .

Please continue to refer to FIG. 2 , the first sliding block 41 and the second sliding block 42 are respectively T-shaped. When the current shorting device needs to be connected with the terminal block 3, the first sliding block 41 is placed in a positive T-shaped structure. The two sliders 42 are placed in an inverted T-shaped structure. At this time, the first slider body 411 and the second slider body 421 are disposed opposite to each other.

It should be noted that the first sliding block 41 is provided with a through hole 413 for the bolt 5 to pass through, and the second sliding block 42 is correspondingly provided with a blind hole 423 for the bolt 5 to pass through. The bolt 5 can pass through the through hole 413 and the blind hole 423 to connect the first sliding block 41 and the second sliding block 42 . Of course, the tightness of the bolts 5 can be adjusted. When the bolts 5 are loosened, the first slider 41 and the second slider 42 can slide freely on the shorting rail 1, thereby driving the short plug connector 2 on the shorting rail 1. When the bolt 5 is tightened, the first sliding block 41 and the second sliding block 42 are fixed on the shorting rail 1, and the position of the shorting plug 2 on the shorting rail 1 remains unchanged.

It is not difficult to understand that in the current short-circuiting device disclosed in the embodiment of the present invention, the inner wall of the through hole 413 is set as a smooth inner wall to ensure that the bolt 5 can freely enter and exit the through hole 413; The thread matched with the bolt 5 ensures that the bolt 5 can be effectively tightened with the blind hole 423 .

In order to meet the requirements of on-site work safety and ensure that the risk of electric shock does not occur when the staff holds the current short-circuit device, in another embodiment of the present invention, the current short-circuit device further includes a cover button for short-circuiting the slide rail 1. The insulating casing of the first slider 41 , the second slider 42 and the bolt 5 .

In order to facilitate installation and disassembly, the insulating housing includes a first insulating housing 61 and a second insulating housing 62 that are contoured to the shorting rail 1, and the first insulating housing 61 and the second insulating housing 62 are fixed by plugging or screwing . The first insulating shell 61 and the second insulating shell 62 are fastened together, and the shorting rail 1 , the first sliding block 41 , the second sliding block 42 and the bolt 5 are all fastened together, and only the shorting plug 2 is exposed.

Among them, the first insulating shell 61 and the second insulating shell 62 are preferably made of insulating plastics, which are not only lightweight, but also have energy efficiency to prevent conduction.

In order to ensure that the secondary current can flow smoothly and reliably, in the current shorting device disclosed in the embodiment of the present invention, the shorting rail 1 , the first sliding block 41 , the second sliding block 42 , and the shorting plug 2 are all Made of conductive metal.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The current short-circuit device is characterized by comprising a short-circuit sliding rail (1) and a plurality of short-circuit plugs (2) capable of sliding along the length direction of the short-circuit sliding rail (1), wherein the short-circuit plugs (2) are used for being electrically connected with terminals on a terminal row (3);

the short-circuit sliding rail (1) is connected with the short-circuit plug (2) through a sliding block;

the short circuit sliding rail (1) comprises a first guide rail (11) and a second guide rail (12) which are arranged in parallel, and a first baffle (13) and a second baffle (14) which are perpendicular to and connected with the first guide rail (11) and the second guide rail (12);

the slide block (4) comprises a first slide block (41) and a second slide block (42);

the first sliding block (41) comprises a first sliding block body (411) and a first sliding block clamping arm (412) which is arranged on the first sliding block body (411) and is used for being in contact with the upper edges of the first guide rail (11) and the second guide rail (12);

the second sliding block (42) comprises a second sliding block body (421) and a second sliding block clamping arm (422) which is arranged on the second sliding block body (421) and is used for being in contact with the lower edges of the first guide rail (11) and the second guide rail (12);

the short-circuit plug (2) is arranged on the second sliding block clamping arm (422);

the first sliding block (41) is provided with a through hole (413) for a bolt (5) to pass through, and the second sliding block (42) is correspondingly provided with a blind hole (423) for the bolt (5) to pass through.

2. Current shorting device according to claim 1, characterized in that the inner wall of the through hole (413) is a smooth inner wall, and the inner wall of the blind hole (423) is provided with a thread for cooperation with the bolt (5).

3. Current shorting device according to claim 1, further comprising an insulating housing for housing the shorting slide (1), the first slider (41), the second slider (42), and the bolt (5).

4. Short-circuiting device according to claim 3, characterised in that said insulating housings comprise a first insulating housing (61) and a second insulating housing (62) profiled with said short-circuiting slide (1), and in that said first insulating housing (61) and second insulating housing (62) are fixed by plugging or screwing.

5. Current shorting device according to claim 4, characterized in that the first (61) and second (62) insulating housings are made of insulating plastic.

6. Current shorting device according to claim 1, characterized in that the shorting slide (1), the first slider (41), the second slider (42), and the shorting plug (2) are made of conductive metal.

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