Low-contact-resistance high-voltage conducting rod

Abstract

The utility model discloses a low-contact-resistance high-voltage conducting rod, and relates to the technical field of high-voltage conducting rods. Comprising a connecting structure, the connecting structure comprises a metal rod, the outer wall of the top of the metal rod is sleeved with a contact head, the outer wall of the metal rod is in threaded connection with a pressure applying structure through an adjusting thread, the adjusting thread is formed in the wall of the metal rod, and a threaded hole is formed in the inner wall of the bottom of the metal rod; the wall of the metal rod is slidably connected with an extrusion structure through a limiting hole, the limiting hole is formed in the wall of the metal rod, the contact pressure between the conductive part and the metal rod can be adjusted through cooperation of the rotating ring and the pressed block, the pressure is kept constant, and the contact resistance is adjusted through the inverse relation between the contact resistance and the contact pressure. Under the condition of not changing the material and geometric characteristics of the conducting rod, the contact resistance is reduced, the conductivity and the stability are effectively improved, and the electric energy loss is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage conductive rod technology, specifically a low-contact-resistance high-voltage conductive rod. Background Technology

[0002] In the operation of high-voltage electrical equipment such as transformers and circuit breakers, the conductive rod is a key component for transmitting electrical energy. The contact resistance of the rod affects the safety and energy efficiency of the equipment. Traditional high-voltage conductive rods often use a single threaded connection or a simple compression fixing method to connect the conductive component to the metal rod. This connection method makes it difficult to control the contact pressure. During long-term operation, the contact pressure is easily attenuated due to factors such as vibration and temperature changes, leading to an increase in contact resistance. This not only increases energy loss but may also cause accidents such as insulation aging, equipment failure, or even fire due to local overheating. In addition, some conductive rods use interference fits or welding to ensure contact stability. Although this can reduce contact resistance to some extent, it makes it difficult to disassemble the conductive component during later maintenance. Once a failure occurs, the repair cost is high and the cycle is long, which is difficult to meet the reliability and maintainability requirements of high-voltage electrical equipment. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a low-contact-resistance high-voltage conductive rod. By using a pressure adjustment structure between a rotating ring and a pressure-bearing block, the contact resistance is reduced, while the connection process is simplified, facilitating subsequent maintenance and replacement, thereby improving the operational reliability of high-voltage electrical equipment.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low contact resistance high voltage conductive rod, comprising a connecting structure, the connecting structure comprising a metal rod, a contact head sleeved on the outer wall of the top of the metal rod, a pressure applying structure threadedly connected to the outer wall of the metal rod via an adjusting thread, the adjusting thread being formed in the wall of the metal rod, a threaded hole being formed on the inner wall of the bottom of the metal rod, and a compression structure being slidably connected to the wall of the metal rod via a limiting hole, the limiting hole being formed in the wall of the metal rod;

[0007] Preferably, the extrusion structure includes a pressure block, the outer wall of which is fixedly connected to a limiting block. One end of the pressure block has a convex groove, and the other end has a pressure groove. The outer wall of the pressure block is slidably connected to the inner wall of the metal rod through a limiting hole, and the outer wall of the limiting block is slidably connected to the inner wall of the metal rod through a limiting hole. The structural design facilitates the assembly and disassembly of conductive components. When maintenance or replacement of conductive components is required, the operation is simple and easy. The stable pressure adjustment and fixing mechanism reduces the risk of failure caused by poor contact.

[0008] Preferably, the pressure-applying structure includes a rotating ring with a threaded groove in its wall and a compression groove in its inner sidewall. A fitting ring is fixedly connected to the outer wall at the bottom of the rotating ring. By cooperating with the pressure block, the contact pressure between the conductive component and the metal rod can be adjusted and kept constant. Utilizing the inverse relationship between contact resistance and contact pressure, the contact resistance can be reduced without changing the material and geometric characteristics of the conductive rod, effectively improving conductivity and stability, thereby reducing power loss.

[0009] Preferably, the inner wall of the rotating ring is threadedly connected to the outer wall of the metal rod through a threaded groove and an adjusting thread, the inner side wall of the fitting ring is slidably connected to the outer wall of the metal rod, and the outer wall of the rotating ring is in contact with the outer wall of the pressure block through an extrusion groove and a pressure groove.

[0010] (III) Beneficial Effects

[0011] This invention provides a low-contact-resistance high-voltage conductive rod. It has the following advantages:

[0012] (i) The conductive rod, through the cooperation of the rotating ring and the pressure block, can adjust the contact pressure between the conductive component and the metal rod and keep the pressure constant. By utilizing the inverse relationship between contact resistance and contact pressure, the contact resistance can be reduced without changing the material and geometric characteristics of the conductive rod, thereby effectively improving the conductivity and stability and reducing power loss.

[0013] (ii) The conductive rod is designed to facilitate the assembly and disassembly of conductive components. When maintenance or replacement of conductive components is required, the operation is simple and easy. The stable pressure regulation and fixing mechanism reduces the risk of failure caused by poor contact and ensures the reliable operation of high-voltage electrical equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the internal structure of the connection structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the extrusion structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the pressure-applying structure of this utility model.

[0019] In the diagram: 1. Connecting structure; 2. Contact head; 3. Pressure applying structure; 11. Metal rod; 12. Adjusting thread; 13. Threaded hole; 14. Extrusion structure; 15. Limiting hole; 141. Pressure block; 142. Limiting block; 143. Convex groove; 144. Pressure groove; 31. Rotating ring; 32. Threaded groove; 33. Extrusion groove; 34. Fitting ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a low contact resistance high voltage conductive rod, including a connecting structure 1, the connecting structure 1 including a metal rod 11, a contact head 2 sleeved on the outer wall of the top of the metal rod 11, a pressure applying structure 3 threadedly connected to the outer wall of the metal rod 11 through an adjusting thread 12, and the adjusting thread 12 is opened in the wall of the metal rod 11, a threaded hole 13 is opened on the inner wall of the bottom of the metal rod 11, and a pressing structure 14 is slidably connected to the wall of the metal rod 11 through a limiting hole 15, and the limiting hole 15 is opened in the wall of the metal rod 11;

[0022] The extrusion structure 14 includes a pressure block 141, with a limiting block 142 fixedly connected to the outer wall of the pressure block 141. One end of the pressure block 141 has a convex groove 143, and the other end of the pressure block 141 has a pressure groove 144. The outer wall of the pressure block 141 is slidably connected to the inner wall of the metal rod 11 through a limiting hole 15. The outer wall of the limiting block 142 is slidably connected to the inner wall of the metal rod 11 through a limiting hole 15. The pressure block 141 and the limiting block 142 are slidably connected to the inner wall of the metal rod 11 through the limiting hole 15, and the pressure block 141 is obliquely upward inside the metal rod 11.

[0023] The pressure-applying structure 3 includes a rotating ring 31. A threaded groove 32 is formed in the wall of the rotating ring 31, and a pressing groove 33 is formed in the inner side wall of the rotating ring 31. A fitting ring 34 is fixedly connected to the outer wall of the bottom of the rotating ring 31. The threaded groove 32 of the rotating ring 31 is moved along the adjusting thread 12 of the metal rod 11, and the rotating ring 31 is rotated to move downward along the thread of the outer wall of the metal rod 11. As the rotating ring 31 descends, the pressing groove 33 inside it contacts the pressing groove 144 of the pressure block 141 and applies pressure. Since the pressure block 141 is set at an upward angle, after being pressed by the rotating ring 31, the pressure block 141 will slide into the metal rod 11, and its convex groove 143 will press the conductive component that is connected inside the metal rod 11, applying pressure to the conductive component, so that the conductive component is more tightly bonded to the inner wall of the metal rod 11.

[0024] The inner wall of the rotating ring 31 is threadedly connected to the outer wall of the metal rod 11 through the threaded groove 32 and the adjusting thread 12. The inner side wall of the fitting ring 34 is slidably connected to the outer wall of the metal rod 11. The outer wall of the rotating ring 31 is in contact with the outer wall of the pressure block 141 through the extrusion groove 33 and the pressure groove 144. Under the premise that the material of the conductive rod remains unchanged, the magnitude of the contact resistance is mainly determined by the physical state, geometric characteristics and contact pressure of the contact interface. The size of the standard contact head 2 and the metal rod 11 results in fixed geometric characteristics, so the contact resistance will change when the contact pressure changes. At the same time, the contact resistance is approximately inversely proportional to the contact pressure. In this way, the contact pressure between the conductive component and the metal rod 11 is increased, and the pressure continuously applied by the rotating ring 31 ensures the constancy of the contact pressure, thereby effectively reducing the contact resistance.

[0025] When using this low contact resistance high voltage conductive rod, the contact head 2 is put on the metal rod 11, and then the position needs to be fixed by bolts. Then the conductive component is connected to the threaded hole 13 at the bottom of the metal rod 11 by threads to achieve initial fixation. At the same time, the pressure block 141 and the limiting block 142 are slidably connected to the inner wall of the metal rod 11 through the limiting hole 15, and the pressure block 141 is set obliquely upward on the inner wall of the metal rod 11.

[0026] Next, the threaded groove 32 of the rotating ring 31 is moved along the adjusting thread 12 of the metal rod 11, and the rotating ring 31 is rotated to move downward along the thread on the outer wall of the metal rod 11. At the same time, both the adjusting thread 12 and the threaded groove 32 are trapezoidal threads, so that the rotating ring 31 can be self-locked on the metal rod 11 by friction, preventing the rotating ring 31 from deviating when the conductive rod vibrates. The contact ring 34 at the bottom of the rotating ring 31 slides along the outer wall of the metal rod 11 during rotation, ensuring the stability of the rotating ring 31 during rotation.

[0027] As the rotating ring 31 descends, its internal pressing groove 33 contacts the pressing groove 144 of the pressing block 141 and applies pressure. Due to the upward angle of the pressing block 141, after being pressed by the rotating ring 31, the pressing block 141 will slide into the metal rod 11, and its convex groove 143 will press the conductive component that is connected inside the metal rod 11, applying pressure to the conductive component, so that the conductive component is more tightly bonded to the inner wall of the metal rod 11.

[0028] Since the contact resistance is mainly determined by the physical state, geometric characteristics and contact pressure of the contact interface, under the premise that the material of the conductive rod remains unchanged, the contact resistance will change when the contact pressure changes. At the same time, the contact resistance is approximately inversely proportional to the contact pressure. In this way, the contact pressure between the conductive component and the metal rod 11 is increased, and the pressure continuously applied by the rotating ring 31 ensures the constantness of the contact pressure, thereby effectively reducing the contact resistance. The contact head 2 is sleeved on the top of the metal rod 11 for connection with external equipment to realize the conductive function.

[0029] This low-contact-resistance high-voltage conductive rod, through the cooperation of the rotating ring 31 and the pressure block 141, can flexibly adjust the pressure on the conductive components according to actual needs by rotating the rotating ring 31, ensuring constant contact pressure. Compared with traditional conductive rods, it reduces contact resistance and improves conductivity and stability. At the same time, this structural design makes the assembly and disassembly of the conductive rod more convenient, facilitating maintenance and replacement of conductive components. It is suitable for high-voltage electrical equipment with strict requirements for contact resistance, reducing power loss and the risk of failure caused by poor contact.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] 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 low-contact-resistance high-voltage conductive rod, comprising a connecting structure (1), the connecting structure (1) comprising a metal rod (11), wherein a contact head (2) is sleeved on the outer wall of the top of the metal rod (11), characterized in that: The outer wall of the metal rod (11) is threadedly connected to a pressure structure (3) via an adjusting thread (12), and the adjusting thread (12) is opened in the wall of the metal rod (11). A threaded hole (13) is opened on the inner wall at the bottom of the metal rod (11). A compression structure (14) is slidably connected to the wall of the metal rod (11) via a limiting hole (15), and the limiting hole (15) is opened in the wall of the metal rod (11). The extrusion structure (14) includes a pressure block (141), a limit block (142) is fixedly connected to the outer wall of the pressure block (141), a convex groove (143) is provided at one end of the pressure block (141), and a pressure groove (144) is provided at the other end of the pressure block (141).

2. The low contact resistance high voltage conductive rod according to claim 1, characterized in that: The outer wall of the pressure block (141) is slidably connected to the inner wall of the metal rod (11) through the limiting hole (15), and the outer wall of the limiting block (142) is slidably connected to the inner wall of the metal rod (11) through the limiting hole (15).

3. The low contact resistance high voltage conductive rod according to claim 1, characterized in that: The pressure-applying structure (3) includes a rotating ring (31), a threaded groove (32) is provided in the wall of the rotating ring (31), an extrusion groove (33) is provided in the inner side wall of the rotating ring (31), and a fitting ring (34) is fixedly connected to the outer wall at the bottom of the rotating ring (31).

4. A low contact resistance high voltage conductive rod according to claim 3, characterized in that: The inner wall of the rotating ring (31) is threadedly connected to the outer wall of the metal rod (11) through a threaded groove (32) and an adjusting thread (12), and the inner side wall of the fitting ring (34) is slidably connected to the outer wall of the metal rod (11).

5. A low contact resistance high voltage conductive rod according to claim 3, characterized in that: The outer wall of the rotating ring (31) is in contact with the outer wall of the pressure block (141) through the extrusion groove (33) and the pressure groove (144).

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