Fixing device of low-voltage metering current transformer

Abstract

The utility model belongs to the technical field of current transformer fixing devices, and particularly relates to a fixing device of a low-voltage metering current transformer, which comprises an upper fixing block, a lower fixing block, a fixing component and a bottom plate component. An upper fixing groove and an upper fixing hole are formed in the bottom of the upper fixing block. The lower fixing block is provided with a lower fixing groove and a lower fixing hole. The fixing assembly comprises a fixing bolt and a fixing nut. According to the fixing device of the low-voltage metering current transformer, the upper fixing block and the lower fixing block are matched, the upper fixing groove and the lower fixing groove coincide to form the fixing through hole, the current transformer can be tightly fixed, the four evenly-distributed fixing assemblies fasten the upper fixing block and the lower fixing block from multiple directions, and the fixing effect is good. The current transformer is effectively prevented from loosening and shifting due to external vibration or impact in the using process, the fixing stability is greatly improved, and the metering accuracy of the current transformer and the operation reliability of a power system are guaranteed.

Description

A mounting device for a low-voltage metering current transformer Technical Field

[0001] This utility model belongs to the technical field of current transformer fixing devices, and particularly relates to a fixing device for a low-voltage metering current transformer. Background Technology

[0002] In the field of low-voltage metering in power systems, current transformers play a crucial role in converting large currents into smaller ones for measurement, protection, and control. However, existing low-voltage metering current transformer mounting systems have several problems. On the one hand, traditional mounting methods have poor stability; when subjected to external vibrations or impacts, current transformers are prone to loosening or even displacement, leading to inaccurate metering and affecting the normal operation of the power system and the reliability of metering. Summary of the Invention

[0003] The purpose of this utility model is to provide a fixing device for low-voltage metering current transformers, aiming to solve the technical problem that the current transformers in the prior art are poorly stable and are prone to loosening or even displacement when subjected to external vibration or impact, resulting in inaccurate metering and affecting the normal operation of the power system and the reliability of metering.

[0004] To achieve the above objectives, the fixing device for the low-voltage metering current transformer provided in this utility model embodiment includes an upper fixing block, a lower fixing block, a fixing assembly, and a base plate assembly. The upper fixing block is disposed on the top side of the lower fixing block, the fixing assembly is sequentially fixed through the upper fixing block and the lower fixing block, and the base plate assembly is connected to the bottom side of the lower fixing block.

[0005] The upper fixing block has an upper fixing groove and an upper fixing hole at its bottom. The upper fixing groove is arc-shaped and is located on one side of the upper fixing hole. The upper fixing hole is located on the side of the upper fixing block.

[0006] The lower fixing block is provided with a lower fixing groove and a lower fixing hole. The lower fixing groove is arc-shaped. The upper fixing groove coincides with the lower fixing groove and forms a fixing through hole. The lower fixing hole is located on one side of the lower fixing groove and on the side of the lower fixing block.

[0007] The fixing component includes a fixing bolt and a fixing nut. The fixing bolt passes through the upper fixing hole and the lower fixing hole in sequence, and the fixing nut is threaded to the fixing bolt and abuts against the lower fixing block.

[0008] As an optional solution of this utility model, the upper fixing hole is provided with four holes, which are evenly distributed on the upper fixing block.

[0009] As an optional solution of this utility model, the number of the lower fixing holes and the upper fixing holes are both four, and they are evenly distributed on the lower fixing block.

[0010] As an optional solution of this utility model, the number of the fixing components and the number of the upper fixing holes are both four, and the fixing components are sequentially fixed through the upper fixing holes and the lower fixing holes.

[0011] As an optional solution of this utility model, the base plate assembly includes a fixed base plate and base plate bolts. The fixed base plate is disposed on the bottom side of the lower fixed block, and the base plate bolts are sequentially fixed through the fixed base plate and the lower fixed block.

[0012] As an optional solution of this utility model, the lower fixing block is provided with a terminal block on its side, the terminal block is fixedly connected to the lower fixing block, and the terminal block is provided with two wiring holes, which are arranged in parallel and opposite directions.

[0013] The above-mentioned technical solutions in the fixing device for the low-voltage metering current transformer provided in this embodiment of the utility model have at least one of the following technical effects:

[0014] The fixing device for the low-voltage metering current transformer provided in this application uses an upper fixing block and a lower fixing block to cooperate, with the upper fixing slot and the lower fixing slot overlapping to form a fixing through hole, which can tightly fix the current transformer. In addition, four evenly distributed fixing components tighten the upper and lower fixing blocks from multiple directions, effectively preventing the current transformer from loosening and shifting due to external vibration or impact during use, greatly improving the stability of fixing, ensuring the accuracy of current transformer metering and the reliability of power system operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a perspective view of the fixing device for the low-voltage metering current transformer provided in an embodiment of this utility model.

[0017] Figure 2 is a perspective view of the fixing device for the low-voltage metering current transformer provided in the embodiment of this utility model.

[0018] Figure 3 is an exploded view of the fixing device of the low-voltage metering current transformer provided in the embodiment of this utility model.

[0019] Figure 4 is an exploded view of the fixing device of the low-voltage metering current transformer provided in the embodiment of this utility model.

[0020] The following are the labeling elements in the figure:

[0021] 1. Upper fixing block; 2. Lower fixing block; 3. Fixing assembly; 4. Base plate assembly; 5. Fixing through hole; 6. Terminal block;

[0022] 11. Upper fixing groove; 12. Upper fixing hole;

[0023] 21. Lower fixing groove; 22. Lower fixing hole;

[0024] 31. Fixing bolts; 32. Fixing nuts;

[0025] 41. Fix the base plate; 42. Base plate bolts;

[0026] 61. Wiring hole. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0028] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0031] In one embodiment of this utility model, as shown in Figures 1 to 4, a fixing device for a low-voltage metering current transformer is provided, including an upper fixing block 1, a lower fixing block 2, a fixing component 3, and a base plate component 4. The upper fixing block 1 is disposed on the top side of the lower fixing block 2, the fixing component 3 is sequentially fixed through the upper fixing block 1 and the lower fixing block 2, and the base plate component 4 is connected to the bottom side of the lower fixing block 2.

[0032] The upper fixing block 1 has an upper fixing groove 11 and an upper fixing hole 12 at its bottom. The upper fixing groove 11 is arc-shaped and is located on one side of the upper fixing hole 12. The upper fixing hole 12 is located on the side of the upper fixing block 1.

[0033] The lower fixing block 2 is provided with a lower fixing groove 21 and a lower fixing hole 22. The lower fixing groove 21 is arc-shaped. The upper fixing groove 11 overlaps with the lower fixing groove 21 and forms a fixing through hole 5. The lower fixing hole 22 is located on one side of the lower fixing groove 21 and on the side of the lower fixing block 2.

[0034] The fixing component 3 includes a fixing bolt 31 and a fixing nut 32. The fixing bolt 31 passes through the upper fixing hole 12 and the lower fixing hole 22 in sequence. The fixing nut 32 is threaded to the fixing bolt 31 and abuts against the lower fixing block 2.

[0035] The fixing device for the low-voltage metering current transformer provided in this application uses an upper fixing block 1 and a lower fixing block 2 to cooperate, with the upper fixing groove 11 and the lower fixing groove 21 overlapping to form a fixing through hole 5, which can tightly fix the current transformer. In addition, four evenly distributed fixing components 3 tighten the upper and lower fixing blocks 2 from multiple directions, effectively preventing the current transformer from loosening and shifting due to external vibration or impact during use, greatly improving the stability of fixing, and ensuring the accuracy of current transformer metering and the reliability of power system operation.

[0036] Place the current transformer in the lower fixing groove 21 of the lower fixing block 2, and then cover it with the upper fixing block 1, so that the upper fixing groove 11 and the lower fixing groove 21 coincide to form a fixing through hole 5, thereby enclosing the current transformer. Next, pass the fixing bolt 31 through the upper fixing hole 12 of the upper fixing block 1 and the lower fixing hole 22 of the lower fixing block 2 in sequence, and tighten the fixing nut 32. Through the fastening force generated by the fixing component 3, the upper fixing block 1 and the lower fixing block 2 tightly clamp the current transformer, achieving a stable fixation.

[0037] The combination of fixing bolts 31 and fixing nuts 32 makes the installation and disassembly process simple and quick. Operators only need to use the corresponding tools to tighten or loosen the nuts to complete the installation and disassembly of the current transformer, saving a lot of time and labor costs and facilitating equipment maintenance and replacement.

[0038] In another embodiment of this utility model, four upper fixing holes 12 are provided and evenly distributed on the upper fixing block 1. Further, four lower fixing holes 22 are provided, the same as the upper fixing holes 12, and evenly distributed on the lower fixing block 2. Further, four fixing components 3 are provided, the same as the upper fixing holes 12, and the fixing components 3 are sequentially fixed through the upper fixing holes 12 and the lower fixing holes 22. The four evenly distributed fixing components 3 apply tightening forces to the upper fixing block 1 and the lower fixing block 2 from multiple directions, allowing the upper fixing block 1 and the lower fixing block 2 to fit together more tightly, thereby firmly fixing the current transformer in the fixing through hole 5 formed by the overlap of the upper fixing groove 11 and the lower fixing groove 21. The four fixing components 3 can better balance the forces in each direction, effectively preventing the current transformer from loosening, shifting, or shaking when subjected to external vibration, impact, or other external forces, greatly improving the stability and reliability of the current transformer fixing, thereby ensuring the accuracy of its measurement and the safety of the power system operation.

[0039] In another embodiment of this utility model, the base plate assembly 4 includes a fixed base plate 41 and base plate bolts 42. The fixed base plate 41 is disposed on the bottom side of the lower fixing block 2, and the base plate bolts 42 are sequentially fixed through the fixed base plate 41 and the lower fixing block 2. The fixed base plate 41 serves as a connection carrier between the device and the mounting surface (such as a wall, the inner wall of a distribution cabinet, etc.), expanding the contact area between the fixing device and the mounting surface, dispersing the pressure of the device on the mounting surface, preventing damage to the mounting surface due to excessive local stress, and providing a stable mounting foundation for the entire fixing device, ensuring that the device can be reliably fixed in the target position. The base plate bolts 42 sequentially pass through the fixed base plate 41 and the lower fixing block 2. By tightening the base plate bolts 42, the fixed base plate 41 and the lower fixing block 2 can be tightly connected together and firmly fixed to the mounting surface. This connection method forms a stable mechanical connection between the fixing device and the mounting surface, effectively preventing the fixing device from shaking or shifting during use, thereby ensuring the reliability and stability of the current transformer fixing.

[0040] In another embodiment of this utility model, a terminal block 6 is provided on the side of the lower fixing block 2. The terminal block 6 is fixedly connected to the lower fixing block 2. The terminal block 6 is provided with two wiring holes 61, which are arranged in parallel and opposite directions. The two parallel and opposite wiring holes 61 provide clear position and direction guidance for wire connection. Operators can more quickly and accurately pass the wires through the wiring holes 61 and connect them to the terminal block 6, avoiding the trouble of finding the wiring position in a complex wiring environment and effectively improving the efficiency of wiring work.

[0041] The fixing device for the low-voltage metering current transformer provided in this application uses an upper fixing block 1 and a lower fixing block 2 to cooperate, with the upper fixing groove 11 and the lower fixing groove 21 overlapping to form a fixing through hole 5, which can tightly fix the current transformer. In addition, four evenly distributed fixing components 3 tighten the upper and lower fixing blocks 2 from multiple directions, effectively preventing the current transformer from loosening and shifting due to external vibration or impact during use, greatly improving the stability of fixing, and ensuring the accuracy of current transformer metering and the reliability of power system operation.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixing device for a low-voltage metering current transformer, characterized in that, The device includes an upper fixing block, a lower fixing block, a fixing assembly, and a base plate assembly. The upper fixing block is disposed on the top side of the lower fixing block. The fixing assembly is sequentially fixed through the upper fixing block and the lower fixing block. The base plate assembly is connected to the bottom side of the lower fixing block. The bottom of the upper fixing block has an upper fixing groove and an upper fixing hole. The upper fixing groove is arc-shaped and located on one side of the upper fixing hole. The upper fixing hole is located on the side of the upper fixing block. The lower fixing block has a lower fixing groove and a lower fixing hole. The lower fixing groove is arc-shaped. The upper fixing groove and the lower fixing groove coincide to form a fixing through hole. The lower fixing hole is located on one side of the lower fixing groove and on the side of the lower fixing block. The fixing assembly includes a fixing bolt and a fixing nut. The fixing bolt is sequentially fixed through the upper fixing hole and the lower fixing hole. The fixing nut is threadedly connected to the fixing bolt and abuts against the lower fixing block.

2. The fixing device for a low-voltage metering current transformer according to claim 1, characterized in that, The upper fixing hole is provided with four holes, which are evenly distributed on the upper fixing block.

3. The fixing device for a low-voltage metering current transformer according to claim 2, characterized in that, The number of lower fixing holes and upper fixing holes are both four, and they are evenly distributed on the lower fixing block.

4. The fixing device for a low-voltage metering current transformer according to claim 1, characterized in that, The number of fixing components and the number of upper fixing holes are both four, and the fixing components are sequentially fixed through the upper fixing holes and the lower fixing holes.

5. The fixing device for a low-voltage metering current transformer according to claim 1, characterized in that, The base plate assembly includes a fixed base plate and base plate bolts. The fixed base plate is disposed on the bottom side of the lower fixed block, and the base plate bolts are sequentially fixed through the fixed base plate and the lower fixed block.

6. The fixing device for a low-voltage metering current transformer according to claim 1, characterized in that, The lower fixing block is provided with a terminal block on its side. The terminal block is fixedly connected to the lower fixing block. The terminal block is provided with two wiring holes, which are arranged in parallel and opposite directions.

Images