A protective cover for a high-voltage side terminal of a transformer

Abstract

The utility model relates to a protection cover for transformer high -voltage side terminal, wherein the protection cover body is the cylindrical shape with the opening being equipped with in lower extreme, the upper end fixed intercommunication has the wire inlet pipe in left side surface, the lower end fixed is equipped with the mounting block in left side surface, the upper end is equipped with a plurality of through -holes in right side surface, the inside fixed is equipped with the baffle of arc in right side surface lower extreme, wire inlet pipe and mounting block are all transverse settings, wherein the inside spacing installation of rubber sealing block is located in wire inlet pipe far from the one end of protection cover body, and the center place of rubber sealing block is equipped with the wire inlet hole transversely, the center place of mounting block is equipped with the screw hole transversely, and the insulating fastening screw rod is transversely set in the screw hole, and is connected with the mounting block through the thread rotation, and the right end of insulating fastening screw rod is located in the inside of protection cover body through the screw hole, and concentric fixed connection has the fastening pressure plate of square, and the left end is located in the outside of mounting block, and is fixed and is equipped with the auxiliary rotating lever, the utility model has the advantages of stable and reliable installation and good use effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of power grid protection equipment, specifically relating to a protective cover for the high-voltage side terminals of a transformer. Background Technology

[0002] Transformer terminal protective covers are protective devices installed on the outside of the terminals. They effectively protect the connection points of transformer terminals and transmission lines, preventing mechanical damage from impacts by foreign objects. They also address the issues of flashover or leakage caused by external factors such as humid air, dust, and small animals, increasing equipment lifespan and ensuring the safety of electrical equipment and personnel. However, existing protective covers have a relatively simple overall structure and poor overall sealing. Furthermore, the lack of effective limiting components makes them prone to shaking and displacement after installation, affecting their overall protective effectiveness. Therefore, to solve these problems, it is necessary to develop a transformer high-voltage side terminal protective cover that is stable, reliable, and performs well in use. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a protective cover for the high-voltage side terminals of a transformer that is stable, reliable in installation, and effective in use.

[0004] The purpose of this utility model is achieved as follows: A protective cover for the high-voltage side terminals of a transformer includes a cover body and an insulating fastening screw. The cover body is vertically oriented and has an overall cylindrical structure with an opening at the lower end. An inlet pipe is fixedly connected to the upper end of the left side of the cover body, and a mounting block is fixedly inserted at the lower end of the left side. Multiple through holes are provided at the upper end of the right side, and an arc-shaped baffle is fixedly installed inside the lower end of the right side. Both the inlet pipe and the mounting block are horizontally oriented. A rubber sealing block is installed inside the end of the inlet pipe away from the cover body, and an inlet hole is horizontally provided at the center of the rubber sealing block. A screw hole is horizontally provided at the center of the mounting block. The insulating fastening screw is horizontally positioned in the screw hole and is connected to the mounting block by a threaded rotation. The right end of the insulating fastening screw is located inside the cover body through the screw hole and is concentrically fixedly connected to a square fastening pressure plate. The left end is located outside the mounting block and is fixedly provided with an auxiliary rotating rod.

[0005] Furthermore, the protective cover body and the inlet pipe are integrally connected, and both the protective cover body and the inlet pipe are made of transparent PC material.

[0006] Furthermore, a colored plate is fixedly bonded to the upper surface of the protective cover body.

[0007] Furthermore, a limiting ring is fixedly provided on the inner wall of the end of the inlet pipe away from the protective cover body, and a positioning and mounting groove that matches the structure of the limiting ring is opened on the outer surface of the rubber sealing block. Through the cooperation of the positioning and mounting groove and the limiting ring, the rubber sealing block is limited and locked inside the inlet pipe.

[0008] Furthermore, the inlet hole has a cross-shaped structure.

[0009] Furthermore, both the fastening plate and the auxiliary rotating rod are made of insulating material.

[0010] Furthermore, the through hole is inclined in shape, and its height gradually decreases from the inner surface of the protective cover body to the outer surface of the protective cover body.

[0011] The beneficial effects of this utility model are as follows: By setting up a protective cover body and an inlet pipe, this utility model can effectively protect the connection ends of transformer terminals and transmission lines by utilizing the cooperation of the protective cover body and the inlet pipe; by setting up a rubber sealing block and an inlet hole, the outer end of the inlet pipe can be sealed without affecting the transmission line passing through the inlet pipe, thereby increasing the sealing performance of this utility model and improving its overall protective effect. By setting up an installation block, screw holes, an insulated fastening screw, a fastening pressure plate, and a baffle, the insulated fastening screw can be rotated by external force during use. At this time, the threaded rotation between the insulated fastening screw and the installation block allows for horizontal movement of the screw while it rotates. This movement of the screw drives the fastening pressure plate to move horizontally. The squeezing force generated during the movement of the pressure plate, combined with the baffle, ensures that the protective cover body is properly positioned and fitted onto the outside of the ceramic skirt below the transformer terminals. This invention solves the problem of existing protective covers easily wobbling and shifting after installation due to the lack of effective limiting components. Furthermore, the auxiliary rotating rod increases the convenience of rotating the insulated fastening screw. Overall, this invention has the advantages of stable and reliable installation and good performance. Attached Figure Description

[0012] Figure 1 This is a front view of the present invention.

[0013] Figure 2 This is a sectional view of the front view of this utility model.

[0014] In the figure: 1. Protective cover body; 11. Through hole; 12. Baffle; 2. Insulating fastening screw; 21. Fastening pressure plate; 22. Auxiliary rotating rod; 3. Inlet pipe; 4. Mounting block; 41. Screw hole; 5. Rubber sealing block; 51. Inlet hole; 6. Color plate. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Example: Figure 1 , Figure 2 As shown, a protective cover for the high-voltage side terminals of a transformer includes a cover body 1 and an insulating fastening screw 2. The cover body 1 is vertically oriented and has an overall cylindrical structure with an opening at the lower end. An inlet pipe 3 is fixedly connected to the upper end of the left side of the cover body 1, and a mounting block 4 is fixedly inserted through the lower end of the left side. The upper end of the right side has multiple through holes 11, and an arc-shaped baffle 12 is fixedly installed inside the lower end of the right side. Both the inlet pipe 3 and the mounting block 4 are horizontally oriented, with the inlet pipe 3 located away from the cover body 1. A rubber sealing block 5 is installed inside the inner limit of one end of the mounting block 4, and a wire inlet hole 51 is provided horizontally at the center of the rubber sealing block 5. A screw hole 41 is provided horizontally at the center of the mounting block 4. The insulating fastening screw 2 is horizontally arranged in the screw hole 41 and is connected to the mounting block 4 by means of threaded rotation. The right end of the insulating fastening screw 2 is located inside the protective cover body 1 through the screw hole 41 and is concentrically fixedly connected to a square fastening pressure plate 21. The left end is located outside the mounting block 4 and is fixedly provided with an auxiliary rotating rod 22.

[0017] The protective cover body 1 and the inlet pipe 3 are integrally connected, and both the protective cover body 1 and the inlet pipe 3 are made of transparent PC material. The transparent PC material allows the staff to clearly see the connection status between the terminal and the power transmission line, thus facilitating inspection and maintenance. A color plate 6 is fixedly bonded to the upper surface of the protective cover body 1. The color plate 6 makes it easy to distinguish the corresponding power transmission line during the installation of this utility model. The red color plate corresponds to the live wire, the yellow or green color plate corresponds to the ground wire, and the blue color plate corresponds to the neutral wire. A limit ring is fixedly provided on the inner wall of the end of the inlet pipe 3 away from the protective cover body 1. The outer surface of the rubber sealing block 5 is provided with a positioning installation groove that matches the structure of the limit ring. Through the cooperation of the positioning installation groove and the limit ring, the rubber sealing block 5 is limited and locked inside the inlet pipe 3.

[0018] The inlet hole 51 has a cross-shaped hole structure. Utilizing this structure, combined with the elasticity of the rubber sealing block 5, the inlet hole 51 can accommodate power transmission wires of different diameters, increasing its applicability. The fastening plate 21 and the auxiliary rotating rod 22 are both made of insulating material, which increases the safety of the operation process. The through hole 11 is inclined, with its height gradually decreasing from the inner surface to the outer surface of the protective cover body 1. This through hole 11 structure allows for communication between the inside of the protective cover body 1 and the outside, while also preventing rainwater from entering the protective cover body 1 through the through hole 11 and affecting the connection between the terminals and the power transmission wires.

[0019] In use, this utility model first selects a color plate 6 according to the type of power transmission line to be installed, and fixes the color plate 6 to the upper end of the protective cover body 1. The red color plate 6 corresponds to the live wire, the yellow or green color plate 6 corresponds to the ground wire, and the blue color plate 6 corresponds to the neutral wire. Then, the connection end of the power transmission line is inserted through the inlet hole 51 at the center of the rubber sealing block 5, and then exits through the opening at the bottom of the protective cover body 1, completing the connection between the power transmission line connection end and the transformer terminal. Next, external force is used to move the protective cover body 1 and the inlet pipe 3 along the power transmission line, so that they cover the outside of the power transmission line connection end and the transformer terminal, while simultaneously completing the sleeve connection of the lower end of the protective cover body 1 to the outside of the ceramic skirt below the transformer terminal. Finally, external force is used to rotate the insulating fastening screw 2. At this time, the threaded rotation between the insulating fastening screw 2 and the mounting block 4 allows for horizontal movement of the insulating fastening screw 2 while it rotates. By moving the insulated fastening screw 2, the fastening pressure plate 21 moves horizontally. The squeezing force generated during the movement of the fastening pressure plate 21, combined with the baffle 12, effectively limits the enclosure body 1 to the outside of the ceramic skirt. This structure solves the problem of existing protective covers easily shaking and shifting after installation due to the lack of effective limiting components. Thus, the installation of this invention is complete. After installation, the protective cover body 1 and the inlet pipe 3 work together to effectively protect the connection ends of the transformer terminals and transmission lines. The rubber sealing block 5 and the inlet hole 51 seal the outer end of the inlet pipe 3 without affecting the passage of the transmission line inside, thereby increasing the sealing performance and improving the overall protective effect. In summary, this invention has the advantages of stable and reliable installation and good performance.

[0020] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model without departing from the spirit and scope of this utility model. Any modifications or equivalent substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A protective cover for the high-voltage side terminals of a transformer, comprising a cover body (1) and an insulating fastening screw (2), characterized in that: The protective cover body (1) is vertically oriented, and its overall structure is a cylindrical shape with an opening at the lower end. An inlet pipe (3) is fixedly connected to the upper end of the left side of the protective cover body (1), and a mounting block (4) is fixedly inserted through the lower end of the left side. Multiple through holes (11) are provided at the upper end of the right side, and an arc-shaped baffle (12) is fixedly installed inside the lower end of the right side. Both the inlet pipe (3) and the mounting block (4) are horizontally oriented. A rubber sealing block (5) is installed internally at the end of the inlet pipe (3) furthest from the protective cover body (1). A wire inlet hole (51) is provided horizontally at the center of the rubber sealing block (5), and a screw hole (41) is provided horizontally at the center of the mounting block (4). The insulating fastening screw (2) is provided horizontally in the screw hole (41) and is connected to the mounting block (4) by means of threaded rotation. The right end of the insulating fastening screw (2) is located inside the cover body (1) through the screw hole (41) and is concentrically fixed with a square fastening pressure plate (21). The left end is located outside the mounting block (4) and is fixedly provided with an auxiliary rotating rod (22).

2. A protective cover for a high voltage terminal of a transformer as defined in claim 1, characterized in that: The protective cover body (1) and the inlet pipe (3) are integrally connected, and both the protective cover body (1) and the inlet pipe (3) are made of transparent PC material.

3. A protective cover for a high voltage terminal of a transformer as defined in claim 1, characterized in that: The upper surface of the protective cover body (1) is fixedly bonded with a colored plate (6).

4. A protective cover for a high voltage terminal of a transformer as defined in claim 1, characterized in that: A limiting ring is fixedly provided on the inner wall of the end of the inlet pipe (3) away from the protective cover body (1). The outer surface of the rubber sealing block (5) is provided with a positioning and mounting groove that matches the structure of the limiting ring. Through the cooperation of the positioning and mounting groove and the limiting ring, the rubber sealing block (5) is limited and locked inside the inlet pipe (3).

5. A protective cover for a high voltage terminal of a transformer as defined in claim 1, characterized in that: The inlet hole (51) has a cross-shaped hole structure.

6. A protective cover for a high voltage terminal of a transformer as defined in claim 1, characterized in that: Both the fastening plate (21) and the auxiliary rotating rod (22) are made of insulating material.

7. A protective cover for the high-voltage side terminals of a transformer as described in claim 1, characterized in that: The through hole (11) is inclined in shape, and its height gradually decreases from the inner surface of the shield body (1) to the outer surface of the shield body (1).

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