Rapid first-aid repair screw rod for conducting rod of oil-immersed distribution transformer

Abstract

The utility model relates to a quick first-aid repair screw of an oil-immersed distribution transformer conducting rod, which comprises a conducting rod, a cushion block is in threaded connection with the bottom of the outer surface of the conducting rod, a first nut is in threaded connection with the bottom of the outer surface of the conducting rod and located on the upper side of the cushion block, and a quick first-aid repair mechanism is arranged at the top of the outer surface of the conducting rod. The rapid first-aid repair mechanism comprises a main body block arranged on the top of the outer surface of the conducting rod, a fixing groove is formed in the lower surface of the main body block, female threads are arranged in an inner cavity of the fixing groove, and a fixing rod is fixed to the upper surface of the main body block. According to the quick first-aid repair screw for the conductive rod of the oil-immersed distribution transformer, when the conductive rod of the distribution transformer is repaired after being burnt out, only one end of the burnt conductive rod needs to be simply processed, and then a cable wiring terminal can be quickly connected through splicing of a quick first-aid repair mechanism, so that quick first-aid repair of the burnt conductive rod can be realized; and the power failure time is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of conductive rods for oil-immersed distribution transformers, specifically a quick-repair screw for conductive rods of oil-immersed distribution transformers. Background Technology

[0002] The current-carrying conductor of the terminal block of an oil-immersed distribution transformer consists of a cylindrical, copper stud with threads at both ends, commonly known as a conductive rod. The conductive rod, together with the insulator, forms the high-voltage and low-voltage bushings of the distribution transformer. The conductive rod is used to connect the transformer coil leads to the external lines and is installed on the top of the transformer.

[0003] Oil-immersed distribution transformers in operation may experience overheating of the conductive rods due to overload, short circuits, and aging of the conductive rods and insulation materials, leading to burnout of the conductive rods and cable terminals. In practice, most conductive rod burnout occurs at the connection between the conductive rod and the cable terminal, i.e., the joint is the most vulnerable to burnout. Burnout of the conductive rod at the joint is a common fault in the emergency repair of oil-immersed distribution transformers. Emergency repair of oil-immersed distribution transformers usually involves replacing the burned-out conductive rods to repair the exposed parts of the conductive rods, which takes a long time to complete. Prolonged power outages can disrupt production and daily life, failing to meet the current user demands for power quality. Based on this, a rapid repair screw for the conductive rods of oil-immersed distribution transformers is proposed to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a rapid repair screw for the conductive rod of an oil-immersed distribution transformer. It has the advantages of enabling rapid repair of the conductive rod and significantly reducing power outage time. It solves the problem that the repair of oil-immersed distribution transformers usually involves replacing the burned conductive rod to repair the exposed part of the conductive rod, which takes a long time to complete. The long power outage will affect production and daily life and cannot meet the current users' requirements for power quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick repair screw for the conductive rod of an oil-immersed distribution transformer, comprising a conductive rod, a pad being threadedly connected to the bottom of the outer surface of the conductive rod, a nut being threadedly connected to the bottom of the outer surface of the conductive rod and above the pad, and a quick repair mechanism for improving repair efficiency being provided at the top of the outer surface of the conductive rod.

[0006] The rapid repair mechanism is located on the main body block at the top of the outer surface of the conductive rod. The lower surface of the main body block has a fixing groove, and the inner cavity of the fixing groove has a female thread. The upper surface of the main body block is fixed with a fixing rod, and the outer surface of the fixing rod has a male thread.

[0007] Furthermore, the fixing groove is threadedly connected to the top of the outer surface of the conductive rod via a female thread.

[0008] Furthermore, the main body block is a cuboid with a missing lower surface, and the adjacent two sides of the main body block are both arc-shaped.

[0009] Furthermore, the outer diameter of the fixing rod is equal to the outer diameter of the conductive rod.

[0010] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0011] The rapid repair screw for the conductive rod of this oil-immersed distribution transformer can quickly repair the burned conductive rod by simply treating one end of the burned conductive rod and then connecting the cable terminal through the rapid repair mechanism. This significantly reduces the power outage time. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the rapid repair mechanism of this utility model;

[0014] Figure 3 This is a 3D schematic diagram of the rapid repair mechanism structure of this utility model.

[0015] In the diagram: 1. Conductive rod, 2. Pad, 3. Nut No. 1, 4. Quick repair mechanism, 401. Main block, 402. Fixing groove, 403. Female thread, 404. Fixing rod, 405. Male thread. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1 The embodiment of the quick repair screw for the conductive rod of an oil-immersed distribution transformer includes a conductive rod 1, a pad 2 is threadedly connected to the bottom of the outer surface of the conductive rod 1, a nut 3 is threadedly connected to the bottom of the outer surface of the conductive rod 1 and above the pad 2, and a quick repair mechanism 4 for improving repair efficiency is provided on the top of the outer surface of the conductive rod 1.

[0018] Understandably, if the threads on the insulator side of the conductive rod 1 are not burned out, but there is not enough thread length to connect the cable terminal, the burned part of the conductive rod 1 can be cut off with a tool, and then the remaining conductive rod 1 can be manually tapped with a tapping tool. After tapping, the conductive rod 1 can be more easily screwed into the female thread 403 in the quick repair mechanism 4, which facilitates subsequent installation and fixing operations. By repairing the burned threads, replacement due to thread damage can be avoided, reducing maintenance costs. The burrs on the conductive rod 1 can be sanded off with sandpaper. Sanding can remove burrs and uneven parts on the surface of the conductive rod 1, thereby providing a smoother and cleaner contact surface and ensuring the reliability of the electrical connection. Finally, electrical compound grease is fully applied to the conductive rod 1.

[0019] The electrical composite grease can improve the conductivity of the contact surface at the connection of the conductive rod 1, effectively reduce the contact resistance, thereby reducing power loss and joint temperature rise. At the same time, the electrical composite grease plays an anti-oxidation and anti-corrosion role for the conductive rod 1, protecting the metal connection surface from oxidation and corrosion.

[0020] Please see Figures 2 to 3 To improve the repair efficiency of the conductive rod 1, the rapid repair mechanism 4 in this embodiment is provided on the main body block 401 at the top of the outer surface of the conductive rod 1. The lower surface of the main body block 401 is provided with a fixing groove 402, and the inner cavity of the fixing groove 402 is provided with a female thread 403. The female thread 403 of the rapid repair mechanism 4 of the corresponding specification conductive rod 1 is screwed into the top of the outer surface of the conductive rod 1. The upper surface of the main body block 401 is fixed with a fixing rod 404, and the outer surface of the fixing rod 404 is provided with a male thread 405. The cable terminal is connected to the male thread 405 at the upper end of the rapid repair mechanism 4, and then the cable terminal is fixed with two nuts.

[0021] The main body block 401 is a cuboid with a missing lower surface. The cuboid main body block facilitates the fastening of the quick repair screw. The adjacent two sides of the main body block 401 are both arc-shaped. The outer diameter of the fixing rod 404 is equal to the outer diameter of the conductive rod 1.

[0022] It should be noted that, based on the specifications of common oil-immersed distribution transformers, the specifications of the corresponding quick-repair screw for conductive rod 1 are as follows:

[0023] The 250-400kVA distribution transformer has 20 conductive rods 1. The length, width and height of the main block 401 are 28mm, 28mm and 22mm respectively. The length of the fixing rod 404 is 25mm and the depth of the fixing groove 402 is 20mm. The specifications of the male thread 405 and the female thread 403 are both M20 metric standard thread diameter and pitch.

[0024] For distribution transformers of 250kVA and below, there are 12 conductive rods 1. The length, width and height of the main block 401 are 20mm, 20mm and 22mm respectively. The length of the fixing rod 404 is 25mm and the depth of the fixing groove 402 is 20mm. The specifications of the male thread 405 and the female thread 403 are both M12 metric standard thread diameter and pitch.

[0025] Understandably, when repairing the burnt conductor rod 1 of an oil-immersed distribution transformer, only one end of the burnt conductor rod 1 needs to be simply treated. The cable terminal can then be quickly connected through the rapid repair mechanism 4, thus achieving rapid repair of the burnt conductor rod 1. This significantly reduces the power outage time and improves the repair efficiency of the burnt conductor rod 1.

[0026] The working principle of the above embodiments is as follows:

[0027] If the threads on the insulator side of the conductor rod 1 are not burned out, but there is not enough thread length to connect the cable terminal, the burned part of the conductor rod 1 can be cut off with a tool, and then the remaining conductor rod 1 can be manually tapped with a tap and die tool. The burrs on the conductor rod 1 can be sanded off with sandpaper. Finally, electrical compound grease can be fully applied to the conductor rod 1. Then, the female thread 403 of the quick repair mechanism 4 of the corresponding specification conductor rod 1 can be screwed into the top of the outer surface of the conductor rod 1. Finally, the cable terminal can be connected to the male thread 405 on the upper end of the quick repair mechanism 4. Then, the cable terminal can be fixed with two nuts.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.

[0029] 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.

Claims

1. A quick repair screw rod of an oil-immersed distribution transformer electrically conductive rod, comprising an electrically conductive rod (1), characterized in that: The bottom of the outer surface of the conductive pole (1) is threadedly connected with a cushion block (2), the bottom of the outer surface of the conductive pole (1) and located on the upside of the cushion block (2) is threadedly connected with a first nut (3), and the top of the outer surface of the conductive pole (1) is provided with a quick repair mechanism (4) for improving the repair efficiency. The quick repair mechanism (4) is arranged on the main body block (401) at the top of the outer surface of the conductive pole (1), the lower surface of the main body block (401) is provided with a fixing groove (402), the inner cavity of the fixing groove (402) is provided with a female thread (403), the upper surface of the main body block (401) is fixedly provided with a fixing rod (404), and the outer surface of the fixing rod (404) is provided with a male thread (405).

2. A quick repair screw rod for electrically conductive rods of oil-immersed distribution transformers according to claim 1, characterized in that: The fixing groove (402) is threadedly connected between the top of the outer surface of the conductive pole (1) and the female thread (403).

3. The quick repair screw rod of the oil-immersed distribution transformer conducting rod according to claim 1, characterized in that: The shape of the main body block (401) is a cuboid with a part of the lower surface missing, and the adjacent two side edges of the main body block (401) are both arc-shaped.

4. The quick repair screw rod of the oil-immersed distribution transformer conducting rod according to claim 1, characterized in that: The outer diameter of the fixing rod (404) is equal to the outer diameter of the conductive pole (1).

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