CN219799526U

CN219799526U - Transformer core grounding current monitor

Info

Publication number: CN219799526U
Application number: CN202320763599.9U
Authority: CN
Inventors: 黄晓磊
Original assignee: Nanjing Zeneng Electric Co ltd
Current assignee: Nanjing Zeneng Electric Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-10-03
Anticipated expiration: 2033-04-10

Abstract

The utility model discloses a transformer core grounding current monitor, which comprises a current monitor body and a fixed joint arranged at the bottom end of the current monitor body, wherein a grounding wire row is arranged in the fixed joint, a pressing structure is arranged at the bottom end of the current monitor body and positioned at the fixed joint, the pressing structure comprises a fixed groove, and the fixed groove is formed in the cylindrical surface of the fixed joint; according to the transformer iron core grounding current monitor, different contact end faces are selected according to the sectional shape of the grounding wire row, the grounding wire row can be fixed in the fixed connector through the contact end faces, the grounding wire row is guaranteed to be firmly fixed in the current monitor body, the clamping plate is moved through the meshing of the spiral teeth and the matched teeth, the grounding wire row can be clamped no matter which contact end face is opposite to the fixed connector, and the loosening of the rotating shaft can be avoided through the fastening nut.

Description

Transformer core grounding current monitor

Technical Field

The utility model relates to the field of grounding current monitoring, in particular to a transformer core grounding current monitor.

Background

The grounding lead is led to a proper position through the small sleeve, so that no current flows in the grounding wire during operation monitoring, the grounding current of the transformer core and the clamping piece is continuously monitored, and the transformer core on-line monitoring device is a common instrument for monitoring the grounding current.

The existing transformer core grounding current monitor has certain defects, when monitoring, a grounding wire or a grounding copper bar needs to penetrate through the interior of the current monitor body, but sometimes monitoring data is unstable, and the reason is that the grounding wire or the copper bar penetrating through the interior of the current monitor body is not fixed, cannot be completely contacted with the interior of a fixed joint under the action of external force or during installation, and particularly cannot ensure that the grounding structure is fully contacted with the interior of the fixed joint when adopting grounding structures of different shapes.

Disclosure of Invention

The utility model mainly aims to provide a transformer core grounding current monitor which can effectively solve the technical problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a transformer core earth connection current monitor, includes the current monitor body to and set up in the fixed joint of current monitor body bottom, the inside of fixed joint is provided with the earth connection row, and the bottom of current monitor body just is located fixed joint department and is provided with the compact structure, the compact structure includes the fixed slot, the fixed slot is seted up in the face of cylinder of fixed joint, and the cooperation groove has been seted up to the face of cylinder of fixed joint and is located the bottom of fixed slot, and the inside of fixed slot is provided with the chucking board, and the bottom of chucking board is provided with the cooperation strip, and chucking board and fixed slot sliding connection, and cooperation groove and cooperation strip looks adaptation, the contact terminal surface has all been seted up at the both ends of chucking board.

In a preferred embodiment of the present utility model, the contact end surfaces of the clamping plates are arc-shaped, and one of the contact end surfaces of the clamping plates contacts with the ground line row.

As a preferable technical scheme of the utility model, friction lines are arranged on two end surfaces of the contact end surface, and the friction lines of the contact end surface are clamped with the ground wire row.

As a preferable technical scheme of the utility model, a locking structure is arranged in the fixed joint and positioned on the upper surface of the clamping plate, the locking structure comprises a placing cavity, the placing cavity is arranged at the top end of the fixed groove, a rotating shaft is arranged in the placing cavity, spiral teeth are welded in the middle of the rotating shaft and positioned in the placing cavity, matching teeth are arranged on the upper surface of the clamping plate, and the matching teeth are matched with the spiral teeth.

As a preferable technical scheme of the utility model, the two sides of the placing cavity are rotatably connected with the intersection of the rotating shaft, and a fastening nut is arranged on the cylindrical surface of the rotating shaft and positioned outside the fixed joint.

In a preferred embodiment of the present utility model, the ground wire row has a circular or rectangular cross-sectional shape, and the ground wire row is engaged between an inner wall of the fixed joint and the contact end surface.

Compared with the prior art, the utility model has the following beneficial effects: the utility model is provided with the compaction structure, different contact end surfaces are selected according to the cross-sectional shape of the grounding wire row, the grounding wire row can be fixed in the interior of the fixed joint through the contact end surfaces, and the grounding wire row is ensured to be firmly fixed in the interior of the current monitor body;

the locking structure is arranged, the clamping plate is moved through the meshing of the spiral teeth and the matched teeth, the ground wire row can be clamped no matter which contact end face faces the inside of the fixed joint, and the rotating shaft can be prevented from loosening through the fastening nut.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a transformer core grounding current monitor according to the present utility model;

FIG. 2 is a schematic view of a grounding wire of a transformer core grounding current monitor according to the present utility model;

fig. 3 is a schematic diagram of a compacting structure of a transformer core grounding current monitor according to the present utility model;

fig. 4 is a schematic diagram of a locking structure of a transformer core grounding current monitor according to the present utility model.

In the figure: 1. a current monitor body; 2. fixing the joint; 3. a compacting structure; 4. a locking structure; 5. a ground line row; 31. a fixing groove; 32. a mating groove; 33. a clamping plate; 34. a mating strip; 35. a contact end face; 41. a placement cavity; 42. a rotating shaft; 43. spiral teeth; 44. and mating teeth.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-4, a transformer core grounding current monitor, including current monitor body 1, and set up in the fixed joint 2 of current monitor body 1 bottom, the inside of fixed joint 2 is provided with earth connection row 5, the bottom of current monitor body 1 just is located fixed joint 2 department and is provided with the compact structure 3, the compact structure 3 includes fixed slot 31, the face of cylinder of fixed joint 2 is seted up in fixed slot 31, the face of cylinder of fixed joint 2 just is located the bottom of fixed slot 31 and has been seted up mating groove 32, and the inside of fixed slot 31 is provided with chucking plate 33, and the bottom of chucking plate 33 is provided with mating strip 34, and chucking plate 33 and fixed slot 31 sliding connection, and mating groove 32 and mating strip 34 looks adaptation, contact terminal surface 35 has all been seted up at the both ends of chucking plate 33, select different contact terminal surfaces 35 according to the cross-sectional shape of earth connection row 5, can be through contact terminal surface 35 with earth connection row 5 fixed in the inside of fixed joint 2, guarantee that earth connection row 5 is firmly fixed in the inside of current monitor body 1.

In this embodiment, the contact end face 35 of the clamping plate 33 is in a circular arc shape, one of the contact end faces 35 of the clamping plate 33 contacts with the ground wire row 5, the ground wire row 5 is in a circular or rectangular cross-sectional shape, the ground wire row 5 is clamped between the inner wall of the fixed connector 2 and the contact end face 35, the ground wire row 5 can be clamped by the inferior arc contact end face 35 when the ground wire row 5 is in a circular cross-sectional shape, and the ground wire row 5 can be clamped by the semicircular contact end face 35 when the ground wire row 5 is in a rectangular cross-sectional shape.

In this embodiment, friction lines are formed on both end surfaces of the contact end surface 35, and the friction lines of the contact end surface 35 are engaged with the ground wire row 5, so that the ground wire row 5 can be pressed against the inner wall of the fixed connector 2 when the clamping plate 33 is moved, and the ground wire row 5 is prevented from sliding up and down.

In this embodiment, the inside of fixed joint 2 and the upper surface that is located chucking plate 33 are provided with locking structure 4, locking structure 4 is including placing chamber 41, place chamber 41 and set up in the top of fixed slot 31, and the inside of placing chamber 41 is erect and is had axis of rotation 42, the centre of axis of rotation 42 and the inside welding that is located place chamber 41 have helical tooth 43, mating tooth 44 has been seted up to the upper surface of chucking plate 33, and mating tooth 44 and helical tooth 43 looks adaptation, thereby move chucking plate 33 through helical tooth 43 and mating tooth 44, whichever contact terminal surface 35 all can carry out the chucking with earth connection row 5 facing the inside fixed joint 2, and can avoid axis of rotation 42 to take place not hard up through the fastening nut.

In this embodiment, the two sides of the placing cavity 41 are rotatably connected with the intersecting part of the rotating shaft 42, and the fastening nut is disposed on the cylindrical surface of the rotating shaft 42 and outside the fixed joint 2, so that the rotating shaft 42 can be prevented from rotating relatively without screwing the fastening nut of the rotating shaft 42 when the rotating shaft 42 is not required to rotate.

It should be noted that, the earth current monitor can carry out on-line monitoring to parameters such as the earth current of iron core and folder, through the fixed joint 2 department that inserts current monitor body 1 with earth connection row 5, thereby make current monitor body 1 can monitor the electric current of earth connection row 5, on-line monitoring device can feed back when the electric current data takes place to be unusual, when connecting earth connection row 5, run through the inside of fixed joint 2 with earth connection row 5, at this moment, because the cross-sectional shape of earth connection row 5 is different, select the contact terminal surface 35 of suitable chucking plate 33 different faces, can clamp earth connection row 5 through the contact terminal surface 35 of minor arc when earth connection row 5 cross-sectional shape is circular, can clamp earth connection row 5 through semicircle-shaped contact terminal surface 35 when earth connection row 5 cross-sectional shape is the rectangle, the inner wall that is at this moment earth connection row 5 can not take place to reciprocate, need change the position of plate 33, make helical tooth 43 place inside rotating cavity 41 and tooth 43 and the inside of helical tooth 43 and the inside of spiral tooth 43 and the inside groove of groove 33, thereby make tight fit with the chucking plate 33, the inside groove of slip joint 32 is realized, the tight cooperation with the nut is guaranteed to the inside groove of the screw-thread groove is realized, the tight connection groove is realized with the inside groove 32, the slip joint is realized, the tight connection groove is realized, the nut is 32 is realized, and the tight is realized.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a transformer core ground current monitor which characterized in that: including current monitor body (1) to and set up in fixed joint (2) of current monitor body (1) bottom, the inside of fixed joint (2) is provided with earth connection row (5), and the bottom of current monitor body (1) just is located fixed joint (2) department and is provided with compact structure (3), compact structure (3) include fixed slot (31), the cylindrical surface in fixed joint (2) is seted up in fixed slot (31), and mating groove (32) have been seted up to the cylindrical surface of fixed joint (2) and be located the bottom of fixed slot (31), and the inside of fixed slot (31) is provided with chucking board (33), and the bottom of chucking board (33) is provided with cooperation strip (34), and chucking board (33) and fixed slot (31) sliding connection, and cooperation groove (32) and cooperation strip (34) looks adaptation, contact terminal surface (35) have all been seted up at the both ends of chucking board (33).

2. The transformer core ground current monitor of claim 1, wherein: the contact end face (35) of the clamping plate (33) is arc-shaped, and one contact end face (35) of the clamping plate (33) is in contact with the ground wire row (5).

3. The transformer core ground current monitor of claim 2, wherein: friction lines are formed on two end faces of the contact end face (35), and the friction lines of the contact end face (35) are clamped with the ground wire row (5).

4. The transformer core ground current monitor of claim 1, wherein: the inside of fixed joint (2) and the upper surface that is located chucking board (33) are provided with locking structure (4), locking structure (4) are including placing chamber (41), place chamber (41) and offer in the top of fixed slot (31), and place the inside of chamber (41) and erect axis of rotation (42), the centre of axis of rotation (42) and be located the inside welding of placing chamber (41) and have helical tooth (43), and mating teeth (44) have been seted up on the upper surface of chucking board (33), and mating teeth (44) and helical tooth (43) looks adaptation.

5. The transformer core ground current monitor of claim 4, wherein: the two sides of the placing cavity (41) are rotatably connected with the intersection of the rotating shaft (42), and a fastening nut is arranged on the cylindrical surface of the rotating shaft (42) and positioned outside the fixed joint (2).

6. The transformer core ground current monitor of claim 1, wherein: the section of the grounding wire row (5) is round or rectangular, and the grounding wire row (5) is clamped between the inner wall of the fixed connector (2) and the contact end face (35).