CN219039245U

CN219039245U - Auxiliary connection tool for transformer sleeve detection

Info

Publication number: CN219039245U
Application number: CN202223360523.6U
Authority: CN
Inventors: 查辉; 李杰雅; 邓翔; 海月; 李民坤; 张鑫翰; 吴敏; 翟亮; 闻玉琨; 李辛; 黄囤; 李树奎; 马建鹏
Original assignee: Shizuishan Power Supply Co Of State Grid Ningxia Electric Power Co ltd
Current assignee: Shizuishan Power Supply Co Of State Grid Ningxia Electric Power Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-05-16
Anticipated expiration: 2032-12-01

Abstract

An auxiliary connection tool for transformer bushing detection comprises an insulating connecting piece and a conductive connecting piece; a circular first connecting hole is formed in the bottom end face of the insulating connecting piece, a circular second connecting hole which is concentric with the first connecting hole is formed in the bottom of the first connecting hole, a circular third connecting hole is formed in the top end face of the insulating connecting piece, and the third connecting hole and the second connecting hole are concentric and mutually communicated; one end of the conductive connecting piece can be inserted into the third connecting hole, and the other end extends to the outside of the insulating connecting piece to the end far away from the first connecting hole. The utility model can accurately and reliably fix, can finish the installation operation once, avoids the occurrence of accidents that the spring is damaged and scratched by repeated ineffective pressing and even the operator is scratched by hands, and effectively improves the safety and reliability of the test.

Description

Auxiliary connection tool for transformer sleeve detection

Technical Field

The utility model relates to the technical field of transformers, in particular to an auxiliary connection tool for transformer sleeve detection.

Background

The transformer is core equipment in the transformer substation, the sleeve is used as an accessory of the transformer, is a main insulating device outside the transformer box and is a bridge for connecting a bus of a power system and the transformer, so that the sleeve is one of very important power equipment in the transformer substation, and once the sleeve fails, the transformer can be directly stopped, even the transformer fails, so that the safe and stable operation of the sleeve equipment is ensured. Because the transformer bushing and the transformer are integrated, the bushing and the transformer body cannot be separated for independent test in field test, special wiring is needed during measurement, and independent test is carried out on the transformer bushing. At present, an uninterrupted infrared detection method and a power-cut sleeve dielectric loss and capacitance test method are adopted for transformer sleeve detection, and as no special connecting tool is adopted, when sleeve test is carried out, a maintenance person needs to open the end screen in a grounding way so as to effectively disconnect the contact between the end screen conducting rod and the shell, at the moment, the positioning hole on the conducting rod needs to be exposed by pressing the grounding copper sleeve, the grounding copper sleeve is clamped after the positioning pin is inserted, the grounding copper sleeve is completely separated from the aluminum shell in the interior, the end screen is suspended for use in the test, and after the test is finished, the positioning pin is taken out, the grounding copper sleeve is reset to be grounded, and the normal operation mode is restored; in the detection process, operators can only often adopt a terminal screen cover and a locating pin which are commonly used on site as auxiliary test tools, but the terminal screen structure can be damaged to a certain extent by the mode, and the disposable success rate of the test is low.

Disclosure of Invention

In order to solve the technical problems in the prior art, it is necessary to provide an auxiliary connection tool for detecting the transformer bushing.

An auxiliary connection tool for transformer bushing detection comprises an insulating connecting piece and a conductive connecting piece;

the bottom end face of the insulating connecting piece is provided with a first connecting hole which is circular, the bottom of the first connecting hole is provided with a second connecting hole which is circular and concentric with the first connecting hole, the top end face of the insulating connecting piece is provided with a third connecting hole which is circular, and the third connecting hole and the second connecting hole are concentric and mutually communicated;

one end of the conductive connecting piece can be inserted into the third connecting hole, and the other end of the conductive connecting piece extends to the outside of the insulating connecting piece to the end far away from the first connecting hole.

Preferably, threads are provided on an inner surface of the first connection hole.

Preferably, a distance is reserved between the end part of the conductive connecting piece inserted into the third connecting hole and the second connecting hole, so that a containing cavity is formed between the third connecting hole and the conductive connecting piece.

Preferably, the conductive connecting piece is sleeved with a screwing button.

Preferably, the outer surface of the part of the conductive connecting piece located below the screwing knob is provided with threads.

Preferably, the lower portion of the conductive connecting member located at the screwing knob is screwed with the third connecting hole.

Preferably, the outer wall of the part of the conductive connecting piece above the screwing button is symmetrically provided with connecting surfaces which are parallel to each other along the axial direction of the conductive connecting piece.

Preferably, the diameter of the first connecting hole is larger than the diameter of the third connecting hole.

Preferably, the insulating connecting piece is made of nylon.

Preferably, the conductive connecting piece is made of copper.

According to the technical scheme, the auxiliary connection tool for detecting the transformer bushing comprises an insulating connecting piece and a conductive connecting piece; a circular first connecting hole is formed in the bottom end face of the insulating connecting piece, a circular second connecting hole which is concentric with the first connecting hole is formed in the bottom of the first connecting hole, a circular third connecting hole is formed in the top end face of the insulating connecting piece, and the third connecting hole and the second connecting hole are concentric and mutually communicated; one end of the conductive connecting piece can be inserted into the third connecting hole, and the other end extends to the outside of the insulating connecting piece towards the end far away from the first connecting hole; when the transformer bushing is used, a maintenance person only needs to open the end screen cover, screw the insulating connecting piece onto the transformer bushing, and press acting force is formed on the top of the grounding copper sleeve on the transformer bushing by utilizing the bottom surface of the second connecting hole on the insulating connecting piece, so that the grounding copper sleeve is completely separated from the aluminum shell, and the conductive connecting piece is contacted with the top of the grounding copper sleeve to form effective connection, thereby detecting the transformer bushing. The utility model can accurately and reliably fix, can finish the installation operation once, avoids the occurrence of accidents that the spring is damaged and scratched by repeated ineffective pressing and even the operator is scratched by hands, and effectively improves the safety and reliability of the test. The interface is pressed by stable and continuous acting force, so that damage to the end screen caused by unstable acting force is successfully avoided, the process quality of overhaul and test is greatly improved, the power supply continuity and reliability are improved, and the enterprise image is improved; the potential safety hazard of field operation is reduced, the safety of staff is ensured, and the service life of the power equipment is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic left-view structure of fig. 1.

FIG. 3 is a schematic cross-sectional view of A-A of FIG. 1.

Fig. 4 is a schematic perspective view of the present utility model.

Fig. 5 is a schematic structural view of an insulating connector according to the present utility model.

Fig. 6 is a schematic structural view of the conductive connector of the present utility model.

In the figure: insulating connector 01, conductive connector 02, first connection hole 03, second connection hole 04, third connection hole 05, accommodation chamber 06, screwing knob 07, connection face 08, and pressing face 09.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "middle," "outer," "inner," "lower," and the like are used for indicating orientations or positional relationships, merely to facilitate the description of the present utility model and simplify the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present utility model.

Referring to fig. 1 to 6, an embodiment of the utility model provides an auxiliary connection tool for detecting transformer bushings, which comprises an insulating connecting piece 01 and a conductive connecting piece 02; the insulating connecting piece 01 is made of nylon. The first connecting hole 03 with a circular shape is formed in the bottom end face of the insulating connecting piece 01, threads are arranged on the inner surface of the first connecting hole 03, and the insulating connecting piece 01 can be screwed on an aluminum shell of a transformer sleeve conveniently, so that quick connection and quick disassembly are realized. A second connecting hole 04 which is circular and concentric with the first connecting hole 03 is formed in the bottom of the first connecting hole 03, the inner diameter of the second connecting hole 04 is matched with the diameter of the grounding copper sleeve on the transformer bushing, the grounding copper sleeve can be inserted into the second connecting hole 04, the grounding copper sleeve can be guided by the second connecting hole 04, and the left-right displacement of the grounding guide is limited. A third connecting hole 05 which is circular is formed in the top end face of the insulating connecting piece 01, the third connecting hole 05 is concentric with and communicated with the second connecting hole 04, the diameter of the third connecting hole 05 is matched with the diameter of a terminal screen conducting rod on a transformer sleeve, and the terminal screen conducting rod can be inserted into the third connecting hole 05; the diameter of the second connecting hole 04 is larger than that of the third connecting hole 05, so that an annular pressing surface 09 which can be pressed against the top of the grounding copper bush can be formed on the bottom surface of the second connecting hole 04. The conductive connecting member 02 is made of copper. One end of the conductive connecting member 02 may be inserted into the third connecting hole 05, and the other end of the conductive connecting member 02 extends to the outside of the insulating connecting member 01 toward the end far from the first connecting hole 03, so that the connection detection may be facilitated. When the transformer bushing is used, a maintenance person only needs to open the end screen cover, screw the insulating connecting piece 01 onto the transformer bushing, and form pressing force on the top of the grounding copper sleeve on the transformer bushing by utilizing the bottom surface of the second connecting hole 04 on the insulating connecting piece 01, so that the grounding copper sleeve is completely separated from the aluminum shell inside, and the conductive connecting piece 02 can be contacted with the top of the grounding copper sleeve to form effective and stable connection, thereby detecting the transformer bushing.

In one embodiment, the end of the conductive connecting piece 02 inserted into the third connecting hole 05 is spaced from the second connecting hole 04, so that a containing cavity 06 is formed between the third connecting hole 05 and the conductive connecting piece 02, the containing cavity 06 can enable the terminal screen conductive rod on the transformer bushing to be inserted, a guiding effect can be formed on the terminal screen conductive rod, the left-right displacement of the terminal screen conductive rod is limited, and the terminal screen conductive rod and the conductive connecting piece 02 can be conveniently and effectively connected in a stable mode.

In one embodiment, the conductive connecting piece 02 is sleeved with the screwing knob 07, the conductive connecting piece 02 can be screwed on the insulating connecting piece 01 by rotating the screwing knob 07, and after the bottom surface of the screwing knob 07 is contacted with the top of the insulating connecting piece 01, the conductive connecting piece 02 is indicated to be mounted to a limit position, so that the screwing knob 07 is utilized to limit the depth of the conductive connecting piece 02 inserted into the third connecting hole 05. The outer surface of the part of the conductive connecting piece 02 below the screwing knob 07 is provided with threads, so that the part of the conductive connecting piece 02 below the screwing knob 07 is in threaded connection with the third connecting hole 05, thereby facilitating the disassembly and the assembly of the conductive connecting piece 02.

In one embodiment, the outer wall of the portion of the conductive connecting member 02 above the screwing knob 07 is symmetrically provided with mutually parallel connecting surfaces 08 along the axial direction of the conductive connecting member 02, and when wiring is performed, the conductive connecting member 02 can be clamped by the wiring clamp conveniently so as to ensure the stability of connection.

The foregoing disclosure is illustrative of the preferred embodiments of the present utility model, and is not to be construed as limiting the scope of the utility model, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the utility model as defined by the appended claims.

Claims

1. Auxiliary connection tool for transformer bushing detection, and is characterized in that: comprises an insulating connecting piece and a conductive connecting piece;

2. The auxiliary connection tool for transformer bushing detection according to claim 1, wherein: the first connecting hole is provided with threads on an inner surface thereof.

3. The auxiliary connection tool for transformer bushing detection according to claim 2, wherein: the end part of the conductive connecting piece inserted into the third connecting hole is spaced from the second connecting hole, so that a containing cavity is formed between the third connecting hole and the conductive connecting piece.

4. The auxiliary connection tool for transformer bushing detection according to claim 3, wherein: the conductive connecting piece is sleeved with a screwing button.

5. The auxiliary connection tool for transformer bushing detection according to claim 4, wherein: the outer surface of the part of the conductive connecting piece located below the screwing knob is provided with threads.

6. The auxiliary connection tool for transformer bushing detection according to claim 5, wherein: the part of the conductive connecting piece, which is positioned below the screwing button, is in threaded connection with the third connecting hole.

7. The auxiliary connection tool for transformer bushing detection according to claim 6, wherein: the outer wall of the part above the screwing button of the conductive connecting piece is symmetrically provided with connecting surfaces which are parallel to each other along the axial direction of the conductive connecting piece.

8. The auxiliary connection tool for transformer bushing detection according to claim 1, wherein: the diameter of the first connecting hole is larger than that of the third connecting hole.

9. The auxiliary connection tool for transformer bushing detection according to claim 1, wherein: the insulating connecting piece is made of nylon.

10. The auxiliary connection tool for transformer bushing detection according to claim 1, wherein: the conductive connecting piece is made of copper.