CN210690637U - A special short-circuit device for electrical testing of high-voltage transformers - Google Patents

Abstract

The utility model discloses a special short-circuit device for electrical testing of high-voltage transformers, which comprises a short-circuit, a first plug, a second plug, a first clip, a second clip and an operating rod; A clip is connected; the other end of the short wire is connected to the second clip through a second plug; the first clip and the second clip are both U-shaped structures, both of which contain two strong elastic cards, one side of which is a U-shaped structure. All are provided with jacks, and the other side is provided with operation holes; one side of the top of the operating rod is provided with a positive hook, and the other side of the top of the operating rod is provided with a reverse hook; the utility model has a simple structure 2. It is easy to carry, quick to operate, and has a wide range of applications, which can reduce the burden of high-voltage testing and improve work efficiency; the utility model does not need to use aerial work vehicles when using the special short-circuit wiring device for electrical testing of high-voltage transformers, and does not require test personnel to climb up to work, avoiding high-altitude falling and damage. Risk of electric shock, no damage to electrical equipment.

Description

A special short-circuit device for electrical testing of high-voltage transformers

technical field

The utility model relates to the technical field of electrical equipment testing of power grids, in particular to a special short-circuiting device for electrical testing of high-voltage transformers.

Background technique

During the dielectric loss and withstand voltage tests of 110kV, 220kV and higher voltage transformers, electrical testers need to short-circuit the high, medium and low voltage sides of the transformer respectively, and they will encounter the problem of high-altitude operation. In the substation, the 220kV transformer bushing is as high as 3 meters away from the transformer body, and the 110kV transformer bushing is as high as 2 meters away from the transformer body. When short-circuiting the high, medium and low voltage sides of the transformer, it is usually necessary to use aerial work vehicles or maintenance tests. Personnel climbed on the casing to conduct the test wiring, which not only increased the maintenance cost, but also prolonged the operation time; but also because the porcelain bottle was too slippery, the distance between the shed skirts was small, and some of the porcelain sleeves were designed vertically, which made it inconvenient for the maintenance and test personnel to stand; It must be tested when stopped, the frequency of maintenance tests is high, and there will be strong induced electricity in high-voltage substations. Manually climbing the transformer will pose a safety threat to people and equipment, which has become a technical problem faced by power supply companies.

Utility model content

The purpose of the utility model is to provide a test short-circuiting device that can realize short-circuiting of three sides of a transformer without the need for aerial work vehicles or test personnel to climb up; It eliminates the hidden danger of high-altitude operation after personnel climb up the transformer bushing; at the same time, it can greatly reduce the test time of the transformer, improve the test efficiency, and shorten the power outage time of the power grid.

The technical solution that realizes the purpose of the present utility model is:

A special short-circuit device for electrical testing of high-voltage transformers is characterized in that it includes a short-circuit, a first plug, a second plug, a first clip, a second clip and an operating rod; one end of the short-circuit is connected to the first plug The other end of the first plug is connected with the first clip; the other end of the short wire is connected with one end of the second plug, and the other end of the second plug is connected with the second clip; so The first clip and the second clip are both U-shaped structures, both of which contain two strong elastic cards, one side of which is provided with an insertion hole, and the other side is provided with an operation hole; One side of the top is provided with a positive hook, and the other side of the top of the operating lever is provided with a reverse hook.

Preferably, the short wire adopts a transparent and visible spring structure, the length of which can be freely retracted, the maximum length is 1.5 meters, and the inner part is strung with bare copper wires.

Preferably, both ends of the first plug and the second plug are provided with a jack, and one end of the first plug and the second plug are respectively fastened to the two ends of the short wire through the jack; the first plug and The other end of the second plug is provided with a screw structure, and the other ends of the first plug and the second plug are respectively fastened with the sockets of the first clip and the second clip through the screw structure.

Preferably, the operating rod adopts a telescopic insulating rod, the length of which can be freely extended and retracted, and the maximum length is 2.0 meters.

Compared with the prior art, the present utility model has significant advantages:

The utility model has the advantages of simple structure, easy portability, quick operation and wide application range, which can reduce the burden of the high-voltage test and improve the work efficiency; the utility model does not need to use a high altitude when the utility model is used. The work vehicle does not require test personnel to climb up to work, avoid the risk of falling from high altitude and electric shock, and will not damage electrical equipment.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the special short-circuit connection device for the electrical test of the high-voltage transformer of the present invention.

FIG. 2 is a schematic structural diagram of a clip in the short-circuiting device dedicated to the electrical test of a high-voltage transformer of the present invention.

FIG. 3 is a schematic structural diagram of the operating rod in the short-circuiting device dedicated to the electrical test of the high-voltage transformer of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1:

As shown in FIG. 1 , a special short-circuit device for electrical testing of high-voltage transformers includes a short-circuit 1, a first plug 21, a second plug 22, a first clip 31, a second clip 32 and an operating lever 6; the One end of the short wire 1 is connected to one end of the first plug 21, and the other end of the first plug 21 is connected to the first clip 31; the other end of the short wire 1 is connected to one end of the second plug 22, and the other end of the first plug 21 is connected to the first clip 31. The other end of the two plugs 22 is connected with the second clip 32; the short wire 1 adopts a transparent and visible spring structure, its length can be freely retracted, the maximum length is 1.5 meters, and the interior is strung with bare copper wires; as shown in Figure 2 As shown in the figure, the first clip 31 and the second clip 32 are both U-shaped structures, each of which contains two strong elastic cards, one side is provided with a socket 4, and the other side is provided with an operation Hole 5; one end of the first plug 21 and the second plug 22 is provided with a jack, and one end of the first plug 21 and the second plug 22 are respectively fastened with the two ends of the short wire 1 through the jack; The other ends of the first plug 21 and the second plug 22 are provided with screw structures, and the other ends of the first plug 21 and the second plug 22 are respectively connected with the sockets of the first clip 31 and the second clip 32 through the screw structure. 4-phase fastened connection; as shown in Figure 3, the top side of the operating rod 6 is provided with a positive hook 7, and the other side of the top of the operating rod 6 is provided with a reverse hook 8; the operating rod 6 adopts retractable insulation The rod, whose length is freely retractable, has a maximum length of 2.0 meters.

The working principle of the special short-circuit connection device for the electrical test of the high-voltage transformer of the utility model:

When using, firstly screw the first plug 21 and the second plug 22 at both ends of the short wire 1 into the jacks 4 of the first clip 31 and the second clip 32, and then insert the positive hook 7 of the operating lever 6 into the clip. In the operation hole 5 of the clamp, finally use the operation lever 6 to push the clamp up, and use a strong elastic card to clamp the terminal board on the transformer bushing. Insert the reverse hook 8 of the operating rod 6 into the operating hole 5 of the clip, then pull the operating rod 6 down to remove the clip, remove the other clips in turn according to the above method, and finally remove all the short-circuits on the three sides of the transformer.

To sum up, the short-circuiting device dedicated to the electrical test of the high-voltage transformer of the present invention is simple in structure, easy to carry, fast to operate, and has a wide range of applications, which can reduce the burden of the high-voltage test and improve the work efficiency; There is no need to use an aerial work vehicle during use, and no test personnel are required to climb up to work, avoiding the risk of falling from a height and electric shock, and will not damage electrical equipment.

The specific embodiments described above further describe in detail the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention, and do not In order to limit the present utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims (4)

1. A dedicated short-circuit device for electrical testing of high-voltage transformers, characterized in that it comprises a short-circuit (1), a first plug (21), a second plug (22), a first clip (31), a second clip (32) and the operating lever (6); one end of the short wire (1) is connected to one end of the first plug (21), and the other end of the first plug (21) is connected to the first clip (31) ; the other end of the short wire (1) is connected with one end of the second plug (22), and the other end of the second plug (22) is connected with the second clip (32); the first clip ( 31) and the second clip (32) are both U-shaped structures, each of which contains two strong elastic cards, one side is provided with a socket (4), and the other side is provided with an operation hole (5) A positive hook (7) is provided on one side of the top of the operating rod (6), and a reverse hook (8) is provided on the other side of the top of the operating rod (6). 2. The short-circuit device for high-voltage transformer electrical testing according to claim 1, characterized in that, the short-circuit (1) adopts a transparent and visible spring structure, and its length can be freely retracted, the maximum length is 1.5 meters, and its internal String with bare copper wire. 3. The dedicated short-circuit connection device for the electrical test of high-voltage transformers according to claim 1, wherein one end of the first plug (21) and the second plug (22) are provided with jacks, and the first plug (21) ) and one end of the second plug (22) are respectively fastened to both ends of the short wire (1) through the jack; the other ends of the first plug (21) and the second plug (22) are provided with screws Structure, the other ends of the first plug (21) and the second plug (22) are respectively fastened with the jacks (4) of the first clip (31) and the second clip (32) through a screw structure. 4 . The dedicated short-circuiting device for electrical testing of high-voltage transformers according to claim 1 , wherein the operating rod ( 6 ) adopts a retractable insulating rod, and its length can be freely retracted, and its maximum length is 2.0 meters. 5 .

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