Tightly connected voltage transformer

Abstract

The utility model discloses a tightly connected voltage transformer which comprises a body, the body is provided with a plurality of gun barrels, conductive assemblies are arranged in the gun barrels, each conductive assembly comprises a conductive piece and a conductive sleeve, the conductive sleeve is in threaded connection with the conductive piece, a supporting piece is arranged in the conductive sleeve, and the supporting piece is connected with the conductive piece in a threaded mode. A plurality of elastic parts are evenly distributed on the supporting piece with a circle point as the axis, a bearing plate is arranged on the back face of each elastic part, and each bearing plate is provided with a spring and abuts against the back face of the corresponding elastic part. According to the utility model, the elastic part acts on the surface of the contact fuse wire, so that the contact fuse wire and the conductive sleeve are located at the same axis, and the elastic force of the spring further increases the surface of the elastic part attached to the contact fuse wire, thereby effectively increasing the contact area of the contact fuse wire and the conductive sleeve, and enabling the product to have the advantage of tight electric connection.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a tightly connected voltage transformer. Background Technology

[0002] A voltage transformer, abbreviated as PT, is similar to a transformer and is an instrument used to transform the voltage on a line. However, while a transformer transforms voltage to transmit electrical energy, it has a large capacity, usually measured in kilovolt-amperes or megavolt-amperes. The purpose of a voltage transformer is mainly to power measuring instruments and relay protection devices, to measure the voltage, power, and electrical energy of a line, or to protect valuable equipment, motors, and transformers in the line when a fault occurs.

[0003] The existing three-barrel voltage transformer is electrically connected to the ring main unit via a cable PT connector. The PT connector includes a body and a contact fuse. The body is connected and fixed to the barrel by an interference fit, so that the contact fuse is inserted into the barrel of the voltage transformer. Therefore, the contact fuse is not tightly connected to the conductive sleeve inside the barrel, resulting in severe overheating at the connection point. Therefore, the applicant has made a useful design and found a way to solve the above problem. The technical solution to be introduced below is generated in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional voltage transformer design and provide a product with tight electrical connection.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A tightly connected voltage transformer includes a body with a plurality of barrels. A conductive component is provided inside the barrels. The conductive component includes a conductive element and a conductive sleeve. The conductive sleeve is threaded to the conductive element. A support element is provided inside the conductive sleeve. A plurality of elastic parts are evenly distributed around a central point. A pressure plate is provided on the back of each elastic part. The pressure plate is provided with a spring and abuts against the back of the elastic part.

[0007] Preferably, the conductive element is configured as an L-shaped cylinder, one end of the conductive element is provided with a connecting portion, the connecting portion is provided with at least one mounting hole, and the other end of the conductive element is provided with a threaded post.

[0008] Preferably, the conductive sleeve has a stop portion that abuts against the end face of the barrel, and the inlet of the conductive sleeve has an inclined guide portion.

[0009] Preferably, the conductive sleeve is provided with a recessed groove for accommodating the support member, and the recessed groove is provided with a threaded groove near the inlet and is threadedly connected to the threaded post.

[0010] Preferably, the pressure bearing plate is fixed to the support by welding, the pressure bearing plate is provided with a convex column, and the spring is arranged on the outer wall of the convex column.

[0011] Preferably, the elastic part is provided with an abutting surface, and the elastic part is arranged in an arc shape.

[0012] Beneficial effects:

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses, through the elastic part acting on the surface of the contact fuse, make the contact fuse with the electrically conductive sleeve be in the same axial line, the spring elasticity further increases the elastic part to adhere on the surface of the contact fuse, and then effectively increase the contact area of the contact fuse and the electrically conductive sleeve, overcome the problem that the contact fuse exists in the electrically conductive sleeve in the barrel and is not closely electrically connected, cause the heating problem of the connecting part to be serious, make the product have the advantage of close electrical connection. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a cross section structure schematic diagram of the utility model one kind connecting compact voltage transformer;

[0016] Figure 2 It is the utility model Figure 1 One kind connecting compact voltage transformer's partial A enlarged view;

[0017] Figure 3 It is an explosion drawing of the utility model one kind connecting compact voltage transformer;

[0018] The corresponding relationship between the annotations of the drawings and the component names in the drawings is as follows:

[0019] Reference signs: 1, main body;2, electrically conductive assembly;3, electrically conductive piece;4, electrically conductive sleeve;5, support;6, pressure bearing plate;7, spring;11, barrel;31, connecting part;32, mounting hole;33, threaded column;41, blocking part;42, guide part;43, sink groove;44, threaded groove;51, elastic part;52, abutting surface;61, convex column. DETAILED DESCRIPTION

[0020] The technical solutions of the utility model will be described clearly and completely below in combination with embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms such as ''up'', ''down'', ''left'', ''right'' in the specification are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0022] In the embodiments of the utility model, ''and / or'' is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character '' / '' in this paper generally represents that the front and rear associated objects have an ''or'' relationship.

[0023] Reference example Figures 1 to 3 A kind of closely connected voltage transformer, including body 1, body 1 is equipped with several cannon barrels 11, cannon barrel 11 is equipped with conducting assembly 2, conducting assembly 2 includes conducting piece 3, conducting sleeve 4, conducting sleeve 4 is screwed on conducting piece 3, conducting sleeve 4 is equipped with support piece 5, support piece 5 is evenly distributed with several elastic parts 51 with round dot as axis, the back of elastic part 51 is equipped with pressure plate 6, pressure plate 6 is equipped with spring 7, and abuts the back of elastic part 51, the surface of contact fuse is acted on by elastic part 51, so that contact fuse and conducting sleeve 4 are in the same axial line, the elastic force of spring 7 further increases the surface of contact fuse that elastic part 51 is adhered to, and then effectively increase the contact area of contact fuse and conducting sleeve 4, overcome the problem that contact fuse exists in the electrically connected not closely of conducting sleeve in cannon barrel 11, leading to the serious problem of heating of connecting portion 31 site;

[0024] It is worth mentioning that conducting piece 3 is set as L-shaped cylinder, one end of conducting piece 3 is equipped with connecting portion 31, connecting portion 31 is equipped with at least one mounting hole 32, the other end of conducting piece 3 is equipped with threaded column 33, the coil winding in body 1 is conveniently electrically connected with connecting portion 31 by mounting hole 32, threaded column 33 is used in cooperation with threaded groove 44;

[0025] It is worth mentioning that conducting sleeve 4 is equipped with blocking portion 41, and abuts the end face of cannon barrel 11, the inlet of conducting sleeve 4 is equipped with inclined guide portion 42, when cable PT connector is sleeved on cannon barrel 11, conducting blocking portion 41 is used in cooperation with cannon barrel 11, to provide support for conducting sleeve 4, prevent conducting sleeve 4 from being loose with cannon barrel 11 inner wall, guide portion 42 guides contact fuse to be inserted into conducting sleeve 4;

[0026] It is worth mentioning that the conductive sleeve 4 is provided with a sink 43 accommodating the support 5, the sink 43 is provided with a threaded groove 44 near the inlet, and is threadedly connected to the threaded column 33, and the conductive sleeve 4 is detachable, facilitating assembly of the support 5;

[0027] It is worth mentioning that the pressure plate 6 is fixed to the support 5 by welding, the pressure plate 6 is provided with a convex column 61, and the spring 7 is arranged on the outer wall of the convex column 61, so that the pressure plate 6 not only provides support force for the spring 7, but also strengthens the structural strength of the support 5, and the convex column 61 prevents the spring 7 from being separated;

[0028] It is worth mentioning that the elastic part 51 is provided with an abutting surface 52, the elastic part 51 is arranged in an arc shape, when the contact fuse abuts one end of the arc-shaped elastic part 51, with the contact fuse gradually penetrating into the conductive sleeve 4, the elastic part 51 is extruded by the contact fuse, so that the elastic part 51 moves towards the pressure plate 6 and stores energy, and the spring 7 is also in an energy storage state, and the two release elastic force to tightly adhere the abutting surface 52 to the surface of the contact fuse, thereby effectively increasing the contact area of the contact fuse and the conductive sleeve 4.

[0029] The above design scheme can make the product have the advantages of good safety, good stability and good heat dissipation.

[0030] The above content is a further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the specific embodiments of the utility model are limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection range determined by the claims of the utility model.

Claims

1. A close-coupled voltage transformer comprising a body (1) provided with a number of barrels (11) in which electrically conductive assemblies (2) are arranged, characterized in that: The conductive assembly (2) comprises a conductive piece (3), a conductive sleeve (4) which is threadedly connected to the conductive piece (3), and a support piece (5) arranged in the conductive sleeve (4), wherein the support piece (5) is uniformly provided with a plurality of elastic parts (51) with a dot as an axis, the back surface of the elastic part (51) is provided with a pressure bearing plate (6), the pressure bearing plate (6) is provided with a spring (7) and abuts against the back surface of the elastic part (51).

2. The connected close voltage transformer of claim 1, wherein: The conductive piece (3) is provided as a L-shaped cylinder, one end of the conductive piece (3) is provided with a connecting part (31), the connecting part (31) is provided with at least one mounting hole (32), and the other end of the conductive piece (3) is provided with a threaded column (33).

3. The connected close voltage transformer of claim 2, wherein: The conductive sleeve (4) is provided with a blocking part (41) and abuts against the end surface of the barrel (11), and the inlet of the conductive sleeve (4) is provided with an inclined guide part (42).

4. The connected close voltage transformer of claim 3, wherein: The conductive sleeve (4) is provided with a sink groove (43) for accommodating the support piece (5), the sink groove (43) is provided with a threaded groove (44) near the inlet and is threadedly connected to the threaded column (33).

5. The connected close voltage transformer of claim 1, wherein: The pressure bearing plate (6) is fixed on the support piece (5) by welding, the pressure bearing plate (6) is provided with a convex column (61), and the spring (7) is arranged on the outer wall of the convex column (61).

6. The connected close voltage transformer according to any one of claims 2 to 5, characterized by: The elastic part (51) is provided with an abutting surface (52), and the elastic part (51) is provided as an arc shape.

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