Current mutual inductance coil for copper bar

Abstract

The utility model discloses a current mutual inductance coil for a copper bar. The current mutual inductance coil comprises an outer frame main body, a sliding plate and a fixed plate, the outer frame body is a square hollow frame, the sliding plate is arranged in the outer frame body, sliding grooves are formed in the inner walls of the two sides in the outer frame body, and sliding blocks are arranged on the two sides of the sliding plate and connected with the sliding grooves in a matched mode. A first extension plate is arranged at the top of the sliding plate, and first fixing hole sets are formed in the two sides of the first extension plate; the fixing plate is of a T-shaped structure composed of an inserting plate and a second extending plate, and second fixing hole sets are formed in the two sides of the second extending plate. The first extension plate is fixedly connected with the second extension plate through a bolt; the sliding plate and the fixed plate are covered with insulating rubber layers. The copper bars are pressed through the sliding plate and the fixed plate, the structure is more stable, the copper bars are not prone to falling off, meanwhile, the copper bars of different specifications can be clamped, and the application range of the current mutual inductance coil is greatly widened.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear manufacturing, and in particular to a current transformer for copper busbars. Background Technology

[0002] In power systems, current transformers are critical devices for measuring and monitoring current, and their performance directly affects the safe and stable operation of the power system. Traditional current transformers typically employ a structure where a screw contacts a copper busbar, which has poor adaptability to copper busbars of different specifications and sizes. Especially when dealing with narrow copper busbars, installation and fixing are difficult, and problems such as poor contact and current leakage are prone to occur, affecting the accuracy of current measurement and the reliability of the equipment. Utility Model Content

[0003] The purpose of this invention is to provide a current transformer for copper busbars that is not easily detached and can be adapted to copper busbars of different sizes.

[0004] The purpose of this utility model is achieved as follows: a current transformer for copper busbars, comprising an outer frame body, a sliding plate, and a fixing plate;

[0005] The outer frame body is a square hollow frame. The sliding plate is placed inside the outer frame body. The inner walls on both sides of the outer frame body are provided with sliding grooves. The sliding plate is provided with sliders on both sides that are connected to the sliding grooves. The top of the sliding plate is provided with a first extension plate. The first extension plate is provided with a first fixing hole group on both sides.

[0006] The fixing plate is a T-shaped structure composed of an insertion plate and a second extension plate. The second extension plate has a second fixing hole group on both sides. The first extension plate and the second extension plate are fixedly connected by bolts. Both the sliding plate and the fixing plate are covered with an insulating rubber layer.

[0007] Both the first and second fixing hole groups on both sides consist of two fixing holes.

[0008] The bottom of the sliding plate and the bottom of the insertion plate are exposed on the lower plane of the outer frame body, and auxiliary fixing holes are provided on both sides of the bottom of the sliding plate and the bottom of the insertion plate. The auxiliary fixing holes are fixedly connected by auxiliary bolts.

[0009] Preferably, insulating sleeves are provided on the bolts between the first extension plate and the second extension plate, and on the auxiliary bolts between the auxiliary fixing holes.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] 1. The sliding plate's lateral movable design, combined with auxiliary fixing holes, ensures stable fixation of the equipment and copper busbar. The double bolt group clamping design ensures even pressure distribution on the contact surface, preventing detachment.

[0012] 2. The sliding plate and the fixed plate have a wide contact surface, which can accommodate copper busbars of different widths and has a wider range of applications. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the sliding plate of this utility model.

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixing plate of this utility model.

[0016] Figure 4 This is a schematic diagram of the prior art structure of this utility model.

[0017] The components include: 1. Outer frame body; 101. Slide groove; 2. Sliding plate; 201. Sliding block; 202. First extension plate; 2021. First fixing hole group; 3. Fixing plate; 301. Insertion plate; 302. Second extension plate; 3021. Second fixing hole group; 4. Bolt; 5. Auxiliary fixing hole; 6. Auxiliary bolt; 7. Insulating sleeve. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0019] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1-3 As shown, the purpose of this utility model is achieved as follows: a current transformer for copper busbars, comprising an outer frame body 1, a sliding plate 2, and a fixing plate 3;

[0022] The outer frame body 1 is a square hollow frame. The sliding plate 2 is placed inside the outer frame body 1. The inner walls on both sides of the outer frame body 1 are provided with sliding grooves 101. The sliding plate 2 is provided with sliders 201 on both sides, which are connected to the sliding grooves 101. The top of the sliding plate 2 is provided with a first extension plate 202. The first extension plate 202 is provided with a first fixing hole group 2021 on both sides. The sliding plate can move flexibly inside the outer frame body, which is convenient for installation and adjustment, and improves the flexibility and adaptability of the equipment.

[0023] The fixing plate 3 is a T-shaped structure composed of the insertion plate 301 and the second extension plate 302. The second extension plate 302 has a second fixing hole group 3021 on both sides. The first extension plate 202 and the second extension plate 302 are fixedly connected by bolts 4. The sliding plate 2 and the fixing plate 3 are both covered with an insulating rubber layer (not shown in the figure). This effectively prevents current leakage and short circuit.

[0024] like Figure 2-3 As shown, both the first fixing hole group 2021 and the second fixing hole group 3021 on both sides consist of two fixing holes, which are tightened by two sets of bolts to ensure the stability of the connection.

[0025] like Figure 2-3 As shown, the bottom of the sliding plate 2 and the bottom of the insertion plate 301 are exposed on the lower plane of the outer frame body. Auxiliary fixing holes 5 are provided on both sides of the bottom of the sliding plate 2 and the bottom of the insertion plate 301. The auxiliary fixing holes 5 are fixedly connected by auxiliary bolts 6. When connected to a copper busbar with a smaller width, a second clamping can be achieved in the auxiliary fixing holes to ensure that it will not fall off.

[0026] like Figure 1 As shown, insulating sleeves 7 are provided on the bolts 4 between the first extension plate 202 and the second extension plate 302, and on the auxiliary bolts 6 between the auxiliary fixing holes. The insulating sleeves can prevent current leakage through the bolts, thereby improving the safety of the equipment, and can also separate the two sets of extension plates, thus preventing the bolts from damaging the extension plates when tightened.

[0027] The working principle of this utility model is explained as follows: The sliding plate can move laterally within the outer frame body through the cooperation of the slider and the outer frame groove, and the insertion plate of the fixing plate is vertically embedded into the outer frame body and presses the copper busbar. The first extension plate and the second extension plate are connected by bolts. The insulating sleeve on the bolts maintains electrical isolation and controls the tightening pressure to prevent the plate from deforming. When the width of the copper busbar is small, auxiliary bolts are used to lock it a second time through the bottom auxiliary fixing hole.

[0028] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A current transformer ring for a copper bar, characterized by, Include the outer frame body, sliding plate, fixed plate; The outer frame body is a square hollow frame, the sliding plate is placed in the outer frame body, the inner walls on both sides of the inner part of the outer frame body are provided with sliding grooves, and the two sides of the sliding plate are provided with sliding blocks matched and connected with the sliding grooves; The top of the sliding plate is provided with a first extension plate, and the two sides of the first extension plate are provided with a first fixed hole group; The fixed plate is a T-shaped structure composed of an insertion plate and a second extension plate, and the two sides of the second extension plate are provided with a second fixed hole group; The first extension plate and the second extension plate are fixedly connected through bolts; The sliding plate and the fixed plate are covered with an insulating rubber layer.

2. A current transformer ring for a copper bar according to claim 1, characterized in that, The first fixed hole group and the second fixed hole group on both sides are both composed of two fixed holes.

3. A current transformer ring for a copper bar according to claim 1, characterized in that, The bottom of the sliding plate and the bottom of the insertion plate are exposed to the lower plane of the outer frame body, and auxiliary fixed holes are arranged on both sides of the bottom of the sliding plate and the bottom of the insertion plate, and the auxiliary fixed holes are fixedly connected through auxiliary bolts.

4. A current transformer ring for a copper bar according to claim 1, characterized in that, Insulating sleeves are arranged on the bolts between the first extension plate and the second extension plate and on the auxiliary bolts between the auxiliary fixed holes.

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