Fixing device for multi-directional supported transformer current transformer

Abstract

This utility model discloses a multi-directional support fixing device for a transformer current transformer, including a channel steel. A fixing mechanism is installed on the top of the channel steel, and the current transformer is clamped inside the fixing mechanism. A clamping plate is installed on one side of the channel steel, and the upper surface of the clamping plate is at the same level as the upper surface of the channel steel. A cable is clamped on the inner side of the clamping plate, and the cable passes through the fixing mechanism. Wooden corner blocks are placed around the current transformer based on the original structure. Wooden clamping plates are placed at the top and bottom of the corner blocks and the current transformer, and the wooden clamping plates are connected to the corner blocks and fixed with bolts. The four corner blocks provide lateral constraint to the current transformer, and the wooden clamping plates at the top and bottom provide axial constraint, forming a six-directional support multi-directional constraint fixing, thus constituting effective clamping.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically to a fixing device for a multi-directionally supported transformer current transformer. Background Technology

[0002] When a small-capacity oil-immersed transformer is equipped with a current transformer, the current transformer is installed below the B phase of the high-voltage bushing. The through hole in the middle of the current transformer fits perfectly into the tail of the high-voltage B phase bushing. This installation method, which fits into the tail of the bushing, provides lateral constraint. Then, two wooden clamping blocks are used on the top and bottom, and screws are used to apply axial clamping to form an effective clamp.

[0003] However, when using fiberglass dry bushings in large-capacity oil-immersed transformers or transformers, the tail of this type of bushing is energized and not an insulating structure. If the current transformer continues to be fitted on the tail of the bushing, it will cause component discharge. Therefore, the current transformer is placed on the clamp. The current transformer is fixed by using two wooden clamps, which are axially pressed and fixed by through bolts. The lead wire passes through the middle of the current transformer.

[0004] For example, Chinese authorized patent CN202221390858.X discloses a current transformer mounting mechanism for an oil-immersed transformer. This method of fixing the current transformer has poor resistance to lateral displacement; the force clamping the current transformer is only axial constraint. While this clamping structure can handle vertical vibrations of the transformer, it is prone to displacement and positional changes when the transformer sways left or right due to the lack of a corresponding fixing structure. Furthermore, existing clamping devices only fix one side to the channel steel, leaving the other side suspended, making them highly susceptible to tilting.

[0005] Therefore, a multi-directional support mounting device for transformer current transformers is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a fixing device for a multi-directionally supported transformer current transformer to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for a multi-directionally supported transformer current transformer, comprising a channel steel, a fixing mechanism installed on the top of the channel steel, a current transformer clamped inside the fixing mechanism, a clamping plate installed on one side of the channel steel, the upper surface of the clamping plate being at the same level as the upper surface of the channel steel, a cable clamped inside the clamping plate, and the cable passing through the fixing mechanism.

[0008] Preferably, the clamping plate includes a limiting plate;

[0009] The limiting plate has multiple limiting grooves evenly spaced, the cable is located inside the limiting grooves, and a clamping plate is installed on one side of the limiting plate.

[0010] Preferably, multiple fixing plates are evenly installed on one side of the channel steel, and the limiting plate and clamping plate are fixedly connected to the fixing plates by a first bolt.

[0011] Preferably, the cable is wrapped with an insulating pad.

[0012] Preferably, the fixing mechanism includes two clamping plates;

[0013] A current transformer is installed in the middle between the two clamping plates, and corner blocks are installed at the four corners between the two clamping plates. The corner blocks have a contoured part on the side closest to the current transformer.

[0014] Preferably, each of the corner blocks has a through hole, and the two clamping plates are fixedly connected to the corner blocks using a second bolt.

[0015] Preferably, the two clamps have a wire hole in the middle to facilitate the passage of cables.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: Based on the original structure, wooden corner blocks are placed around the current transformer. Wooden clamps are placed at the top and bottom of the corner blocks and the current transformer, and the wooden clamps are connected to the corner blocks and fixed with bolts. The four corner blocks provide lateral constraint to the current transformer, while the wooden clamps at the top and bottom provide axial constraint, forming a six-way support and multi-directional constraint fixation, thus constituting effective clamping.

[0017] Meanwhile, the upper surfaces of the channel steel and the clamping plate are at the same level, serving together as a support for the fixing mechanism. This provides a safe and effective support for large-sized current transformers, preventing one side from being suspended and thus causing tilting.

[0018] This clamping structure significantly reduces labor costs; the use of wood improves worker safety and reduces the failure rate; its simplified structure and improved performance stability lower after-sales costs. This installation method can be applied to clamps or installed under the cover, expanding its application scenarios. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;

[0021] Figure 3 This is a schematic diagram of the fixing mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the clamping plate of this utility model.

[0023] In the diagram: 1. Channel steel; 2. Cable clamping plate; 21. Fixing plate; 22. First bolt; 23. Limiting plate; 24. Limiting groove; 25. Clamping plate; 3. Fixing mechanism; 31. Clamping plate; 32. Corner block; 33. Through hole; 34. Second bolt; 35. Wire hole; 4. Cable; 5. Current transformer; 6. Insulating pad. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a fixing device for a multi-directionally supported transformer current transformer, including a channel steel 1, a fixing mechanism 3 installed on the top of the channel steel 1, a current transformer 5 clamped inside the fixing mechanism 3, a clamping plate 2 installed on one side of the channel steel 1, the upper surface of the clamping plate 2 being at the same level as the upper surface of the channel steel 1, and a cable 4 clamped inside the clamping plate 2, the cable 4 passing through the fixing mechanism 3.

[0026] like Figure 1 and Figure 4 As shown: The clamping plate 2 includes a limiting plate 23; multiple limiting grooves 24 are evenly provided on the limiting plate 23, the cable 4 is located inside the limiting groove 24, a clamping plate 25 is installed on one side of the limiting plate 23, and an insulating pad 6 is wrapped around the outside of the cable 4; through the above settings, multiple layers of insulating pads 6 are wrapped around the outside of the cable 4. The insulating pads 6 are made of rubber or paper, and the thickness of the insulating pads 6 is slightly larger than the size of the limiting groove 24, so that the cable 4 and the insulating pads 6 can be tightly inserted into the inside of the limiting groove 24, and then clamped and restricted by the clamping plate 25.

[0027] like Figure 4 As shown: Multiple fixing plates 21 are evenly installed on one side of the channel steel 1. The limiting plate 23 and the clamping plate 25 are fixedly connected to the fixing plate 21 by the first bolt 22. With the above settings, the clamping plate 2 can be more easily fixed on the channel steel 1, which makes it easier to support and limit the position of the fixing mechanism 3 together with the channel steel 1.

[0028] like Figure 3As shown: The fixing mechanism 3 includes two clamping plates 31; a current transformer 5 is installed in the middle between the two clamping plates 31, and corner blocks 32 are installed at the four corners between the two clamping plates 31. The corner blocks 32 have a contoured part on the side near the current transformer 5. With the above settings, the clamping plates 31 and corner blocks 32 are made of wood. The upper and lower clamping plates 31 and multiple corner blocks 32 can clamp and restrict the internal current transformer 5, and can constrain the current transformer 5 in different directions (up, down, left, and right) to prevent it from shaking.

[0029] like Figure 3 As shown: Through holes 33 are provided on multiple corner blocks 32, and the two clamping plates 31 are fixedly connected to the multiple corner blocks 32 by the second bolts 34. With the above settings, the second bolts 34 can fix the upper and lower clamping plates 31 and the multiple corner blocks 32 together, and fix them to the upper surface of the channel steel 1. The channel steel 1 and the clamping plate 2 support the fixing mechanism 3, thus preventing the fixing mechanism 3 from tilting.

[0030] like Figure 2 and Figure 3 As shown: The middle of the two clamping plates 31 is provided with a wire hole 35 to facilitate the passage of the cable 4; with the above settings, the cable 4 can pass through the current transformer 5 more conveniently.

[0031] Working principle: First, the limiting plate 23 is connected to the fixing plate 21 by the first bolt 22. Then, the insulating pad 6 is placed on the outside of the cable 4 and inserted into the limiting groove 24. The clamping plate 25 is then fixed in position by the first bolt 22, so that the limiting plate 23 and the clamping plate 25 are fixed together. Subsequently, the current transformer 5 is clamped and restricted by the two clamping plates 31 and the four corner blocks 32, and then fixed to the channel steel 1 by the second bolt 34. The channel steel 1 and the clamping plate 2 support and restrict the entire fixing mechanism 3, preventing the fixing mechanism 3 from tilting.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a multi-supported transformer current transformer, comprising a channel steel (1), characterized in that: A fixing mechanism (3) is installed on the top of the channel steel (1). A current transformer (5) is clamped inside the fixing mechanism (3). A wire clamping plate (2) is installed on one side of the channel steel (1). The upper surface of the wire clamping plate (2) is at the same level as the upper surface of the channel steel (1). A cable (4) is clamped on the inner side of the wire clamping plate (2). The cable (4) passes through the fixing mechanism (3).

2. The multi-directionally supported transformer current transformer fixture of claim 1, wherein: The clamping plate (2) includes a limiting plate (23); The limiting plate (23) has a plurality of limiting grooves (24) evenly distributed on it. The cable (4) is located inside the limiting groove (24). A clamping plate (25) is installed on one side of the limiting plate (23).

3. The fixing device for a multi-directionally supported transformer current transformer according to claim 2, characterized in that: Multiple fixing plates (21) are evenly installed on one side of the channel steel (1), and the limiting plate (23) and clamping plate (25) are fixedly connected to the fixing plate (21) by the first bolt (22).

4. The fixing device for a multi-directionally supported transformer current transformer according to claim 2, characterized in that: The cable (4) is wrapped with an insulating pad (6).

5. The fixing device for a multi-directional supported transformer current transformer according to claim 1, characterized in that: The fixing mechanism (3) includes two clamping plates (31); A current transformer (5) is installed in the middle between the two clamping plates (31), and corner blocks (32) are installed at the four corners between the two clamping plates (31). The corner blocks (32) have a contoured part on the side close to the current transformer (5).

6. The fixing device for a multi-directionally supported transformer current transformer according to claim 5, characterized in that: Each of the corner blocks (32) has a through hole (33), and the two clamping plates (31) are fixedly connected to the corner blocks (32) by a second bolt (34).

7. The fixing device for a multi-directionally supported transformer current transformer according to claim 5, characterized in that: The two clamps (31) have a threading hole (35) in the middle to facilitate the passage of the cable (4).

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