Novel base structure of straight-through current transformer

Abstract

The novel base structure of the straight-through current transformer comprises a connecting arc plate, a stand column and a bottom plate, the connecting arc plate is a major arc, the inner diameter of the connecting arc plate is equal to the outer diameter of the transformer, a threaded hole is machined in the position, corresponding to a mounting hole reserved in the outer wall of the transformer, of the connecting arc plate, and the stand column is connected with the bottom plate. The connecting arc plate is connected with the mutual inductor through screws, the stand column is fixedly connected under the connecting arc plate, the height of the stand column is consistent with the design requirement, the section of the stand column is polygonal, the lower end of the stand column is fixedly connected to the bottom plate, the bottom plate is a plane, and threaded holes used for installation and fixation are machined in the four corners of the bottom plate. The base is simple in structure, is firmly connected and fixed with the mutual inductor, and can meet the structural strength requirement of the base while meeting the design requirement for the height of the base.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformer base structures, and particularly relates to a novel base structure for fixing a through-type current transformer. Background Art

[0002] With the increase of the primary current in the power system, the demand for busbar through-type current transformers is increasing. The previous traditional fixing methods are as Figure 1 shown. The base has a low height and the connection surface between the base and the current transformer is an arc surface smaller than a semi-circle. The lower part of the arc surface forms a base structure through a vertical plate, two side right-angle plates and reinforcing ribs. Restricted by the installation site conditions, the installation positions required by customers generally have requirements for the installation height of the current transformer. The original base can no longer meet the installation requirements in terms of height. If only the height of the existing vertical plate and triangular plate is increased, the structural strength cannot meet the requirements. Moreover, with the increase of the volume and weight of the current transformer, the connection and support area between the original base fixing method and the current transformer is too small, resulting in unstable installation and fixation. Summary of the Invention

[0003] An improvement aimed at at least one defect of the prior art, the utility model provides a novel base structure for a through-type current transformer, which solves the problems of low base height and unstable base fixing method.

[0004] The technical solution adopted by the utility model is a novel base structure for a through-type current transformer, which includes a connecting arc plate, a column and a bottom plate. The connecting arc plate is a major arc, and the inner diameter of the connecting arc plate is equal to the outer diameter of the current transformer. Threaded holes are processed at positions corresponding to the installation holes reserved on the outer wall of the current transformer on the connecting arc plate, and the connecting arc plate is connected to the current transformer through screws. A column is fixedly connected directly below the connecting arc plate. The height of the column is consistent with the design requirements. The cross-section of the column is a polygon. The lower end of the column is fixedly connected to the bottom plate. The bottom plate is a plane, and threaded holes for installation and fixation are processed at the four corners of the bottom plate.

[0005] Preferably, triangular plate-shaped reinforcing ribs are welded at the connection between the column and the bottom plate.

[0006] Preferably, the column is a rectangular tube.

[0007] Preferably, the width of the connecting arc plate is the same as the width of the column.

[0008] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple, and its connection with the mutual inductor is firm and fixed. It can meet the structural strength requirements of the base while meeting the base height requirements of the design. The outer diameter circumferential connection arc plate of the mutual inductor increases the fixing points between the mutual inductor and the base. In the height direction, a multi-sided columnar structure is used for fixation, increasing the strength of the mutual inductor base, making the installation of the mutual inductor and the base firm, the mutual inductor body stable, and the supporting force strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. is a schematic structural diagram of a through-type current mutual inductor of the prior art.

[0010] Figure 2 FIG. is a front view of the new mutual inductor base.

[0011] Figure 3 FIG. is a side view of the new mutual inductor base.

[0012] Figure 4 is Figure 2 the top view of the A-A cross-section in

[0013] Figure 5 FIG. is a front view of the new mutual inductor base and the mutual inductor after assembly.

[0014] Figure 6 FIG. is a side view of the new mutual inductor base and the mutual inductor after assembly.

[0015] Reference numerals in the figure: 1 - connection arc plate, 2 - column, 3 - bottom plate, 4 - reinforcing rib, 5 - mutual inductor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, 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. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0017] As Figures 2 to 4 shown, a new base structure for a through-type current mutual inductor includes a connection arc plate 1, a column 2, and a bottom plate 3. The connection arc plate 1 is a major arc, and the inner diameter of the connection arc plate 1 is equal to the outer diameter of the mutual inductor 5. Threaded holes are processed at positions corresponding to the installation holes reserved on the outer wall of the mutual inductor 5 on the connection arc plate 1, and the connection arc plate 1 is connected to the mutual inductor 5 by screws. The column 2 is fixedly connected directly below the connection arc plate 1, and the width of the connection arc plate 1 is the same as the width of the column 2. The height of the column 2 is consistent with the design requirements, and the cross-section of the column 2 is polygonal and can be, for example, as Figure 4The rectangular tube shown may also be a quadrilateral structure or a hexagonal structure formed by welding multiple strips. The lower end of the column 2 is fixedly connected to the bottom plate 3. The bottom plate 3 is a plane, and threaded holes for installation and fixation are machined at the four corners of the bottom plate 3. A triangular plate-shaped reinforcing rib 4 is welded at the right-angle connection between the column 2 and the bottom plate 3.

[0018] First, according to the outer diameter dimensions of different current transformers 5, the connecting arc plate 1 is made so that its radian matches the outer diameter dimensions of the current transformer 5, and it is ensured that the center of the connecting arc plate 1 is aligned with the center of the current transformer 5. The four threaded holes of the connecting arc plate 1 are aligned with the reserved installation holes of the current transformer 5. Then, according to the required height and structural strength requirements of the design, the shape and height of the column 2 are selected. The two ends of the column 2 are respectively welded to the connecting arc plate 1 and the bottom plate 3. Finally, the reinforcing rib 4 is welded between the column 2 and the bottom plate 3. After the base is completed, the current transformer 5 is sleeved inside the connecting arc plate 1, and the current transformer 5 and the connecting arc plate 1 are fixedly connected by screws.

[0019] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel base structure of a through-type current transformer, characterized in that: It includes a connecting arc plate, a column and a bottom plate. The connecting arc plate is a superior arc. The inner diameter of the connecting arc plate is equal to the outer diameter of the transformer. The connecting arc plate is processed with threaded holes at positions corresponding to the mounting holes reserved on the outer wall of the transformer. The connecting arc plate is connected to the transformer by screws. The connecting column is fixed directly below the connecting arc plate. The height of the column is consistent with the design requirements. The cross-section of the column is polygonal. The lower end of the column is fixedly connected to the bottom plate. The bottom plate is a plane. The four corners of the bottom plate are processed with threaded holes for installation and fixation.

2. The novel base structure of a through-type current transformer according to claim 1 is characterized in that: A triangular plate type reinforcing rib is welded at the connection between the upright column and the bottom plate.

3. The novel base structure of a through-type current transformer according to claim 1 is characterized in that: The column is a rectangular tube.

4. The novel base structure of a through-type current transformer according to claim 1 is characterized in that: The width of the connecting arc plate is consistent with the width of the column.

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