Anti-theft protection device for oil drain valve of small transformer
By designing a small transformer oil drain valve anti-theft protection device, using a combination structure of protective cover, base and padlock, the problem of easy theft of oil drain valve is solved, achieving the effects of anti-theft, rainproof and sunproof, and the structure is simple and easy to install.
Patent Information
- Application Number
- CN202422061880.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The oil drain valve on the existing transformer lacks a protection mechanism, resulting in the risk of the oil drain valve being stolen.
A small transformer oil drain valve anti-theft protection device was designed, including a protective cover, a base and a padlock. The protective cover and the base are connected by a padlock through the through holes and the mounting bracket to form a protective structure.
It effectively protects the drain valve from theft, while also providing rain and sun protection. It has a simple structure, is easy to install, and saves materials.
Smart Images

Figure CN223483587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer technology, and in particular to an anti-theft protection device for the oil drain valve of a small transformer. Background Technology
[0002] 10kV and 35kV new energy transformers are used worldwide. For ease of use, the oil drain valves on these transformers are mostly located in conspicuous external positions. Since these valves are predominantly made of copper, and given the varying levels of societal awareness and responsibility among people worldwide, they are susceptible to theft. Therefore, we propose a small-scale transformer oil drain valve anti-theft protection device to address this issue. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies where the oil drain valve on transformers lacks a protective mechanism, leading to the risk of theft. Therefore, a small transformer oil drain valve anti-theft protection device is proposed.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A small transformer oil drain valve anti-theft protection device includes a protective cover, a base and a padlock. The bottom of the protective cover is open, and one end of the protective cover is provided with a slot. The bottom corners of both sides of the protective cover are provided with first through holes.
[0006] The two ends of the base are bent downward to form a raised edge, and a second through hole is opened at both ends of the raised edge. The two ends of the base are slidably mounted with mounting brackets. The position of the mounting brackets can be finely adjusted by sliding the mounting brackets, so as to facilitate the alignment of the mounting brackets with the mounting bolts on the drain valve.
[0007] As a preferred embodiment of this utility model, both ends of the base are provided with through slots, and the bottom end of the mounting bracket is fixed with a limiting block. The limiting block is inserted into the through slot to improve the stability of the mounting bracket when it moves on the base.
[0008] As a preferred technical solution of this utility model, the upper end of the mounting bracket is provided with a snap-fit groove, and the mounting brackets at both ends of the base are arranged diagonally. The diagonally arranged mounting brackets can avoid the use of four mounting brackets, saving materials, and improving the stability after installation compared to setting them at the same end.
[0009] As a preferred technical solution of this utility model, when the protective cover is snapped onto the base, the first through hole and the second through hole are connected, which facilitates the installation of the padlock later.
[0010] As a preferred technical solution of this utility model, the padlock is installed in the first through hole and the second through hole after the connection is made, and the protective cover is connected to the base by the padlock, thereby protecting the internal oil drain valve.
[0011] The beneficial effects of this utility model are:
[0012] 1. The protective box and mounting bracket have a simple structure and are easy to manufacture.
[0013] 2. No welding is required; installation can be carried out according to the actual situation.
[0014] 3. Protecting the drain valve also serves to prevent theft, rain, and sun damage. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the anti-theft protection device for the small transformer oil drain valve proposed in this utility model;
[0016] Figure 2 This is a schematic diagram of the protective cover in the anti-theft protection device for the small transformer oil drain valve proposed in this utility model;
[0017] Figure 3 This is a three-dimensional structural diagram of the base in the anti-theft protection device for the small transformer oil drain valve proposed in this utility model;
[0018] Figure 4 This is a schematic diagram of the base body of the anti-theft protection device for the small transformer oil drain valve proposed in this utility model.
[0019] In the diagram: 1. Protective cover; 11. Slot; 12. First through hole; 2. Base; 21. Second through hole; 3. Through slot; 4. Mounting bracket; 5. Limiting block; 6. Padlock. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Reference Figure 1-4 A small transformer oil drain valve anti-theft protection device includes a protective cover 1, a base 2 and a padlock 6. The bottom end of the protective cover 1 is open. The protective cover 1 is formed by bending a plate. One end of the protective cover 1 is provided with a slot 11. The slot 11 is adapted to the oil inlet pipe on the transformer oil drain valve. The oil inlet pipe can be snapped into the slot 11. The bottom corners on both sides of the protective cover 1 are provided with first through holes 12.
[0022] The two ends of the base 2 are bent downward to form a raised edge, and a second through hole 21 is opened at both ends of the raised edge. When the protective cover 1 is snapped onto the base 2, the first through hole 12 and the second through hole 21 are connected, which facilitates the installation of the padlock 6 later. The padlock 6 is installed in the first through hole 12 and the second through hole 21 after the connection is made. The protective cover 1 is connected to the base 2 through the padlock 6, thereby protecting the internal drain valve. The two ends of the base 2 are slidably mounted with mounting brackets 4. The position of the sliding mounting brackets 4 can be finely adjusted, so that the mounting brackets 4 are aligned with the mounting bolts on the drain valve.
[0023] The base 2 has through slots 3 at both ends, and the bottom end of the mounting bracket 4 is fixed with a limit block 5. The limit block 5 is inserted into the through slot 3 to improve the stability of the mounting bracket 4 when it moves on the base 2. The upper end of the mounting bracket 4 has a snap-fit slot, and the mounting brackets 4 at both ends of the base 2 are diagonally arranged. The diagonally arranged mounting brackets 4 can avoid using four mounting brackets 4, saving materials, and improving the stability after installation compared to setting them at the same end.
[0024] In this embodiment: when protecting the transformer oil drain valve, such as Figure 1 As shown, the mounting bracket 4 is fixed to the fixing bolt on the drain valve, and the base 2 is fixed by the fixing bolt. After fixing, the protective cover 1 is covered on the drain valve, and the first through hole 12 is connected to the second through hole 21. The base 2 and the protective cover 1 are fixed by the padlock 6, thereby protecting the drain valve.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A theft prevention protection device for a small transformer oil drain valve, comprising a protective cover (1), a base (2), and a padlock (6), characterized in that, The bottom of the protective cover (1) is open, and one end of the protective cover (1) is provided with a slot (11), and the bottom corners of both sides of the protective cover (1) are provided with first through holes (12). The two ends of the base (2) are bent downward to form a convex edge, and a second through hole (21) is provided at both ends of the convex edge, and a mounting bracket (4) is slidably installed at both ends of the base (2). When the protective cover (1) is snapped onto the base (2), the first through hole (12) is connected to the second through hole (21); The padlock (6) is installed in the first through hole (12) and the second through hole (21) after the above-mentioned connection.
2. The anti-theft protection device for the small transformer oil drain valve according to claim 1, characterized in that, Both ends of the base (2) are provided with through slots (3), and the bottom end of the mounting bracket (4) is fixed with a limiting block (5), which is inserted into the through slot (3).
3. The anti-theft protection device for the small transformer oil drain valve according to claim 1, characterized in that, The upper end of the mounting bracket (4) is provided with a snap-fit groove, and the mounting brackets (4) at both ends of the base (2) are arranged diagonally.